* [PATCH 0/1] fs: remove hpfs filesystem
@ 2026-10-23 15:18 Breno Rodrigues Alves
2026-10-23 15:18 ` [PATCH 1/1] " Breno Rodrigues Alves
0 siblings, 1 reply; 2+ messages in thread
From: Breno Rodrigues Alves @ 2026-10-23 15:18 UTC (permalink / raw)
To: linux-fsdevel, linux-kernel
Cc: Breno Rodrigues Alves, Mikulas Patocka, Alexander Viro
The HPFS filesystem driver has been orphaned and unmaintained for a
long time. An RFC on linux-fsdevel stated that HPFS is about to be
removed as it has no remaining users and is no longer supported on
SMP or PREEMPT kernels. Recent vulnerabilities (e.g.,
CVE-2026-97486) further highlight the lack of maintenance.
This patch removes the driver along with its Kconfig entry,
documentation, and CREDITS entries. The HPFS_SUPER_MAGIC value in
include/uapi/linux/magic.h is kept for userspace ABI compatibility,
and defconfig cleanups will be sent separately to the respective
architecture maintainers.
Breno Rodrigues Alves (1):
fs: remove hpfs filesystem
CREDITS | 2 -
Documentation/filesystems/hpfs.rst | 353 ---------
Documentation/filesystems/index.rst | 1 -
MAINTAINERS | 6 -
fs/Kconfig | 1 -
fs/Makefile | 1 -
fs/hpfs/Kconfig | 17 -
fs/hpfs/Makefile | 9 -
fs/hpfs/alloc.c | 582 --------------
fs/hpfs/anode.c | 498 ------------
fs/hpfs/buffer.c | 232 ------
fs/hpfs/dentry.c | 62 --
fs/hpfs/dir.c | 331 --------
fs/hpfs/dnode.c | 1095 ---------------------------
fs/hpfs/ea.c | 368 ---------
fs/hpfs/file.c | 276 -------
fs/hpfs/hpfs.h | 579 --------------
fs/hpfs/hpfs_fn.h | 379 ---------
fs/hpfs/inode.c | 318 --------
fs/hpfs/map.c | 335 --------
fs/hpfs/name.c | 114 ---
fs/hpfs/namei.c | 621 ---------------
fs/hpfs/super.c | 789 -------------------
23 files changed, 6969 deletions(-)
delete mode 100644 Documentation/filesystems/hpfs.rst
delete mode 100644 fs/hpfs/Kconfig
delete mode 100644 fs/hpfs/Makefile
delete mode 100644 fs/hpfs/alloc.c
delete mode 100644 fs/hpfs/anode.c
delete mode 100644 fs/hpfs/buffer.c
delete mode 100644 fs/hpfs/dentry.c
delete mode 100644 fs/hpfs/dir.c
delete mode 100644 fs/hpfs/dnode.c
delete mode 100644 fs/hpfs/ea.c
delete mode 100644 fs/hpfs/file.c
delete mode 100644 fs/hpfs/hpfs.h
delete mode 100644 fs/hpfs/hpfs_fn.h
delete mode 100644 fs/hpfs/inode.c
delete mode 100644 fs/hpfs/map.c
delete mode 100644 fs/hpfs/name.c
delete mode 100644 fs/hpfs/namei.c
delete mode 100644 fs/hpfs/super.c
--
2.56.0
^ permalink raw reply [flat|nested] 2+ messages in thread
* [PATCH 1/1] fs: remove hpfs filesystem
2026-10-23 15:18 [PATCH 0/1] fs: remove hpfs filesystem Breno Rodrigues Alves
@ 2026-10-23 15:18 ` Breno Rodrigues Alves
0 siblings, 0 replies; 2+ messages in thread
From: Breno Rodrigues Alves @ 2026-10-23 15:18 UTC (permalink / raw)
To: linux-fsdevel, linux-kernel
Cc: Breno Rodrigues Alves, Mikulas Patocka, Alexander Viro
The HPFS filesystem driver has been orphaned and unmaintained for a
long time. An RFC on linux-fsdevel stated that HPFS is about to be
removed as it has no remaining users and is no longer supported on
SMP or PREEMPT kernels.
Recent vulnerabilities (e.g., CVE-2026-97486) highlight the lack of
maintenance and robustness of this code. Remove the driver entirely,
along with its Kconfig entry, documentation, and CREDITS entries.
The HPFS_SUPER_MAGIC value in include/uapi/linux/magic.h is kept for
userspace ABI compatibility. Defconfig cleanups will be sent
separately to the respective architecture maintainers.
Signed-off-by: Breno Rodrigues Alves <breno3011alves@gmail.com>
---
CREDITS | 2 -
Documentation/filesystems/hpfs.rst | 353 ---------
Documentation/filesystems/index.rst | 1 -
MAINTAINERS | 6 -
fs/Kconfig | 1 -
fs/Makefile | 1 -
fs/hpfs/Kconfig | 17 -
fs/hpfs/Makefile | 9 -
fs/hpfs/alloc.c | 582 --------------
fs/hpfs/anode.c | 498 ------------
fs/hpfs/buffer.c | 232 ------
fs/hpfs/dentry.c | 62 --
fs/hpfs/dir.c | 331 --------
fs/hpfs/dnode.c | 1095 ---------------------------
fs/hpfs/ea.c | 368 ---------
fs/hpfs/file.c | 276 -------
fs/hpfs/hpfs.h | 579 --------------
fs/hpfs/hpfs_fn.h | 379 ---------
fs/hpfs/inode.c | 318 --------
fs/hpfs/map.c | 335 --------
fs/hpfs/name.c | 114 ---
fs/hpfs/namei.c | 621 ---------------
fs/hpfs/super.c | 789 -------------------
23 files changed, 6969 deletions(-)
delete mode 100644 Documentation/filesystems/hpfs.rst
delete mode 100644 fs/hpfs/Kconfig
delete mode 100644 fs/hpfs/Makefile
delete mode 100644 fs/hpfs/alloc.c
delete mode 100644 fs/hpfs/anode.c
delete mode 100644 fs/hpfs/buffer.c
delete mode 100644 fs/hpfs/dentry.c
delete mode 100644 fs/hpfs/dir.c
delete mode 100644 fs/hpfs/dnode.c
delete mode 100644 fs/hpfs/ea.c
delete mode 100644 fs/hpfs/file.c
delete mode 100644 fs/hpfs/hpfs.h
delete mode 100644 fs/hpfs/hpfs_fn.h
delete mode 100644 fs/hpfs/inode.c
delete mode 100644 fs/hpfs/map.c
delete mode 100644 fs/hpfs/name.c
delete mode 100644 fs/hpfs/namei.c
delete mode 100644 fs/hpfs/super.c
diff --git a/CREDITS b/CREDITS
index 08d7529ba172..882aad786df9 100644
--- a/CREDITS
+++ b/CREDITS
@@ -3166,7 +3166,6 @@ N: Mikulas Patocka
E: mikulas@artax.karlin.mff.cuni.cz
W: https://artax.karlin.mff.cuni.cz/~mikulas/
P: 1024/BB11D2D5 A0 F1 28 4A C4 14 1E CF 92 58 7A 8F 69 BC A4 D3
-D: Read/write HPFS filesystem
S: Weissova 8
S: 644 00 Brno
S: Czech Republic
@@ -3872,7 +3871,6 @@ D: portions of the Linux Security Module (LSM) framework and security modules
N: Chris Smith
E: csmith@convex.com
-D: Read only HPFS filesystem
S: Richardson, Texas
S: USA
diff --git a/Documentation/filesystems/hpfs.rst b/Documentation/filesystems/hpfs.rst
deleted file mode 100644
index 0f9516b5eb07..000000000000
--- a/Documentation/filesystems/hpfs.rst
+++ /dev/null
@@ -1,353 +0,0 @@
-.. SPDX-License-Identifier: GPL-2.0
-
-====================
-Read/Write HPFS 2.09
-====================
-
-1998-2004, Mikulas Patocka
-
-:email: mikulas@artax.karlin.mff.cuni.cz
-:homepage: https://artax.karlin.mff.cuni.cz/~mikulas/vyplody/hpfs/index-e.cgi
-
-Credits
-=======
-Chris Smith, 1993, original read-only HPFS, some code and hpfs structures file
- is taken from it
-
-Jacques Gelinas, MSDos mmap, Inspired by fs/nfs/mmap.c (Jon Tombs 15 Aug 1993)
-
-Werner Almesberger, 1992, 1993, MSDos option parser & CR/LF conversion
-
-Mount options
-
-uid=xxx,gid=xxx,umask=xxx (default uid=gid=0 umask=default_system_umask)
- Set owner/group/mode for files that do not have it specified in extended
- attributes. Mode is inverted umask - for example umask 027 gives owner
- all permission, group read permission and anybody else no access. Note
- that for files mode is anded with 0666. If you want files to have 'x'
- rights, you must use extended attributes.
-case=lower,asis (default asis)
- File name lowercasing in readdir.
-conv=binary,text,auto (default binary)
- CR/LF -> LF conversion, if auto, decision is made according to extension
- - there is a list of text extensions (I thing it's better to not convert
- text file than to damage binary file). If you want to change that list,
- change it in the source. Original readonly HPFS contained some strange
- heuristic algorithm that I removed. I thing it's danger to let the
- computer decide whether file is text or binary. For example, DJGPP
- binaries contain small text message at the beginning and they could be
- misidentified and damaged under some circumstances.
-check=none,normal,strict (default normal)
- Check level. Selecting none will cause only little speedup and big
- danger. I tried to write it so that it won't crash if check=normal on
- corrupted filesystems. check=strict means many superfluous checks -
- used for debugging (for example it checks if file is allocated in
- bitmaps when accessing it).
-errors=continue,remount-ro,panic (default remount-ro)
- Behaviour when filesystem errors found.
-chkdsk=no,errors,always (default errors)
- When to mark filesystem dirty so that OS/2 checks it.
-eas=no,ro,rw (default rw)
- What to do with extended attributes. 'no' - ignore them and use always
- values specified in uid/gid/mode options. 'ro' - read extended
- attributes but do not create them. 'rw' - create extended attributes
- when you use chmod/chown/chgrp/mknod/ln -s on the filesystem.
-timeshift=(-)nnn (default 0)
- Shifts the time by nnn seconds. For example, if you see under linux
- one hour more, than under os/2, use timeshift=-3600.
-
-
-File names
-==========
-
-As in OS/2, filenames are case insensitive. However, shell thinks that names
-are case sensitive, so for example when you create a file FOO, you can use
-'cat FOO', 'cat Foo', 'cat foo' or 'cat F*' but not 'cat f*'. Note, that you
-also won't be able to compile linux kernel (and maybe other things) on HPFS
-because kernel creates different files with names like bootsect.S and
-bootsect.s. When searching for file whose name has characters >= 128, codepages
-are used - see below.
-OS/2 ignores dots and spaces at the end of file name, so this driver does as
-well. If you create 'a. ...', the file 'a' will be created, but you can still
-access it under names 'a.', 'a..', 'a . . . ' etc.
-
-
-Extended attributes
-===================
-
-On HPFS partitions, OS/2 can associate to each file a special information called
-extended attributes. Extended attributes are pairs of (key,value) where key is
-an ascii string identifying that attribute and value is any string of bytes of
-variable length. OS/2 stores window and icon positions and file types there. So
-why not use it for unix-specific info like file owner or access rights? This
-driver can do it. If you chown/chgrp/chmod on a hpfs partition, extended
-attributes with keys "UID", "GID" or "MODE" and 2-byte values are created. Only
-that extended attributes those value differs from defaults specified in mount
-options are created. Once created, the extended attributes are never deleted,
-they're just changed. It means that when your default uid=0 and you type
-something like 'chown luser file; chown root file' the file will contain
-extended attribute UID=0. And when you umount the fs and mount it again with
-uid=luser_uid, the file will be still owned by root! If you chmod file to 444,
-extended attribute "MODE" will not be set, this special case is done by setting
-read-only flag. When you mknod a block or char device, besides "MODE", the
-special 4-byte extended attribute "DEV" will be created containing the device
-number. Currently this driver cannot resize extended attributes - it means
-that if somebody (I don't know who?) has set "UID", "GID", "MODE" or "DEV"
-attributes with different sizes, they won't be rewritten and changing these
-values doesn't work.
-
-
-Symlinks
-========
-
-You can do symlinks on HPFS partition, symlinks are achieved by setting extended
-attribute named "SYMLINK" with symlink value. Like on ext2, you can chown and
-chgrp symlinks but I don't know what is it good for. chmoding symlink results
-in chmoding file where symlink points. These symlinks are just for Linux use and
-incompatible with OS/2. OS/2 PmShell symlinks are not supported because they are
-stored in very crazy way. They tried to do it so that link changes when file is
-moved ... sometimes it works. But the link is partly stored in directory
-extended attributes and partly in OS2SYS.INI. I don't want (and don't know how)
-to analyze or change OS2SYS.INI.
-
-
-Codepages
-=========
-
-HPFS can contain several uppercasing tables for several codepages and each
-file has a pointer to codepage its name is in. However OS/2 was created in
-America where people don't care much about codepages and so multiple codepages
-support is quite buggy. I have Czech OS/2 working in codepage 852 on my disk.
-Once I booted English OS/2 working in cp 850 and I created a file on my 852
-partition. It marked file name codepage as 850 - good. But when I again booted
-Czech OS/2, the file was completely inaccessible under any name. It seems that
-OS/2 uppercases the search pattern with its system code page (852) and file
-name it's comparing to with its code page (850). These could never match. Is it
-really what IBM developers wanted? But problems continued. When I created in
-Czech OS/2 another file in that directory, that file was inaccessible too. OS/2
-probably uses different uppercasing method when searching where to place a file
-(note, that files in HPFS directory must be sorted) and when searching for
-a file. Finally when I opened this directory in PmShell, PmShell crashed (the
-funny thing was that, when rebooted, PmShell tried to reopen this directory
-again :-). chkdsk happily ignores these errors and only low-level disk
-modification saved me. Never mix different language versions of OS/2 on one
-system although HPFS was designed to allow that.
-OK, I could implement complex codepage support to this driver but I think it
-would cause more problems than benefit with such buggy implementation in OS/2.
-So this driver simply uses first codepage it finds for uppercasing and
-lowercasing no matter what's file codepage index. Usually all file names are in
-this codepage - if you don't try to do what I described above :-)
-
-
-Known bugs
-==========
-
-HPFS386 on OS/2 server is not supported. HPFS386 installed on normal OS/2 client
-should work. If you have OS/2 server, use only read-only mode. I don't know how
-to handle some HPFS386 structures like access control list or extended perm
-list, I don't know how to delete them when file is deleted and how to not
-overwrite them with extended attributes. Send me some info on these structures
-and I'll make it. However, this driver should detect presence of HPFS386
-structures, remount read-only and not destroy them (I hope).
-
-When there's not enough space for extended attributes, they will be truncated
-and no error is returned.
-
-OS/2 can't access files if the path is longer than about 256 chars but this
-driver allows you to do it. chkdsk ignores such errors.
-
-Sometimes you won't be able to delete some files on a very full filesystem
-(returning error ENOSPC). That's because file in non-leaf node in directory tree
-(one directory, if it's large, has dirents in tree on HPFS) must be replaced
-with another node when deleted. And that new file might have larger name than
-the old one so the new name doesn't fit in directory node (dnode). And that
-would result in directory tree splitting, that takes disk space. Workaround is
-to delete other files that are leaf (probability that the file is non-leaf is
-about 1/50) or to truncate file first to make some space.
-You encounter this problem only if you have many directories so that
-preallocated directory band is full i.e.::
-
- number_of_directories / size_of_filesystem_in_mb > 4.
-
-You can't delete open directories.
-
-You can't rename over directories (what is it good for?).
-
-Renaming files so that only case changes doesn't work. This driver supports it
-but vfs doesn't. Something like 'mv file FILE' won't work.
-
-All atimes and directory mtimes are not updated. That's because of performance
-reasons. If you extremely wish to update them, let me know, I'll write it (but
-it will be slow).
-
-When the system is out of memory and swap, it may slightly corrupt filesystem
-(lost files, unbalanced directories). (I guess all filesystem may do it).
-
-When compiled, you get warning: function declaration isn't a prototype. Does
-anybody know what does it mean?
-
-
-What does "unbalanced tree" message mean?
-=========================================
-
-Old versions of this driver created sometimes unbalanced dnode trees. OS/2
-chkdsk doesn't scream if the tree is unbalanced (and sometimes creates
-unbalanced trees too :-) but both HPFS and HPFS386 contain bug that it rarely
-crashes when the tree is not balanced. This driver handles unbalanced trees
-correctly and writes warning if it finds them. If you see this message, this is
-probably because of directories created with old version of this driver.
-Workaround is to move all files from that directory to another and then back
-again. Do it in Linux, not OS/2! If you see this message in directory that is
-whole created by this driver, it is BUG - let me know about it.
-
-
-Bugs in OS/2
-============
-
-When you have two (or more) lost directories pointing each to other, chkdsk
-locks up when repairing filesystem.
-
-Sometimes (I think it's random) when you create a file with one-char name under
-OS/2, OS/2 marks it as 'long'. chkdsk then removes this flag saying "Minor fs
-error corrected".
-
-File names like "a .b" are marked as 'long' by OS/2 but chkdsk "corrects" it and
-marks them as short (and writes "minor fs error corrected"). This bug is not in
-HPFS386.
-
-Codepage bugs described above
-=============================
-
-If you don't install fixpacks, there are many, many more...
-
-
-History
-=======
-
-====== =========================================================================
-0.90 First public release
-0.91 Fixed bug that caused shooting to memory when write_inode was called on
- open inode (rarely happened)
-0.92 Fixed a little memory leak in freeing directory inodes
-0.93 Fixed bug that locked up the machine when there were too many filenames
- with first 15 characters same
- Fixed write_file to zero file when writing behind file end
-0.94 Fixed a little memory leak when trying to delete busy file or directory
-0.95 Fixed a bug that i_hpfs_parent_dir was not updated when moving files
-1.90 First version for 2.1.1xx kernels
-1.91 Fixed a bug that chk_sectors failed when sectors were at the end of disk
- Fixed a race-condition when write_inode is called while deleting file
- Fixed a bug that could possibly happen (with very low probability) when
- using 0xff in filenames.
-
- Rewritten locking to avoid race-conditions
-
- Mount option 'eas' now works
-
- Fsync no longer returns error
-
- Files beginning with '.' are marked hidden
-
- Remount support added
-
- Alloc is not so slow when filesystem becomes full
-
- Atimes are no more updated because it slows down operation
-
- Code cleanup (removed all commented debug prints)
-1.92 Corrected a bug when sync was called just before closing file
-1.93 Modified, so that it works with kernels >= 2.1.131, I don't know if it
- works with previous versions
-
- Fixed a possible problem with disks > 64G (but I don't have one, so I can't
- test it)
-
- Fixed a file overflow at 2G
-
- Added new option 'timeshift'
-
- Changed behaviour on HPFS386: It is now possible to operate on HPFS386 in
- read-only mode
-
- Fixed a bug that slowed down alloc and prevented allocating 100% space
- (this bug was not destructive)
-1.94 Added workaround for one bug in Linux
-
- Fixed one buffer leak
-
- Fixed some incompatibilities with large extended attributes (but it's still
- not 100% ok, I have no info on it and OS/2 doesn't want to create them)
-
- Rewritten allocation
-
- Fixed a bug with i_blocks (du sometimes didn't display correct values)
-
- Directories have no longer archive attribute set (some programs don't like
- it)
-
- Fixed a bug that it set badly one flag in large anode tree (it was not
- destructive)
-1.95 Fixed one buffer leak, that could happen on corrupted filesystem
-
- Fixed one bug in allocation in 1.94
-1.96 Added workaround for one bug in OS/2 (HPFS locked up, HPFS386 reported
- error sometimes when opening directories in PMSHELL)
-
- Fixed a possible bitmap race
-
- Fixed possible problem on large disks
-
- You can now delete open files
-
- Fixed a nondestructive race in rename
-1.97 Support for HPFS v3 (on large partitions)
-
- ZFixed a bug that it didn't allow creation of files > 128M
- (it should be 2G)
-1.97.1 Changed names of global symbols
-
- Fixed a bug when chmoding or chowning root directory
-1.98 Fixed a deadlock when using old_readdir
- Better directory handling; workaround for "unbalanced tree" bug in OS/2
-1.99 Corrected a possible problem when there's not enough space while deleting
- file
-
- Now it tries to truncate the file if there's not enough space when
- deleting
-
- Removed a lot of redundant code
-2.00 Fixed a bug in rename (it was there since 1.96)
- Better anti-fragmentation strategy
-2.01 Fixed problem with directory listing over NFS
-
- Directory lseek now checks for proper parameters
-
- Fixed race-condition in buffer code - it is in all filesystems in Linux;
- when reading device (cat /dev/hda) while creating files on it, files
- could be damaged
-2.02 Workaround for bug in breada in Linux. breada could cause accesses beyond
- end of partition
-2.03 Char, block devices and pipes are correctly created
-
- Fixed non-crashing race in unlink (Alexander Viro)
-
- Now it works with Japanese version of OS/2
-2.04 Fixed error when ftruncate used to extend file
-2.05 Fixed crash when got mount parameters without =
-
- Fixed crash when allocation of anode failed due to full disk
-
- Fixed some crashes when block io or inode allocation failed
-2.06 Fixed some crash on corrupted disk structures
-
- Better allocation strategy
-
- Reschedule points added so that it doesn't lock CPU long time
-
- It should work in read-only mode on Warp Server
-2.07 More fixes for Warp Server. Now it really works
-2.08 Creating new files is not so slow on large disks
-
- An attempt to sync deleted file does not generate filesystem error
-2.09 Fixed error on extremely fragmented files
-====== =========================================================================
diff --git a/Documentation/filesystems/index.rst b/Documentation/filesystems/index.rst
index 7cce7cc28d12..9eb1d56b323f 100644
--- a/Documentation/filesystems/index.rst
+++ b/Documentation/filesystems/index.rst
@@ -94,7 +94,6 @@ Documentation for filesystem implementations.
gfs2/index
hfs
hfsplus
- hpfs
fuse/index
inotify
isofs
diff --git a/MAINTAINERS b/MAINTAINERS
index 7336600952c8..943135302225 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -12063,12 +12063,6 @@ S: Orphan
F: arch/x86/include/asm/hpet.h
F: arch/x86/kernel/hpet.c
-HPFS FILESYSTEM
-M: Mikulas Patocka <mikulas@artax.karlin.mff.cuni.cz>
-S: Maintained
-W: http://artax.karlin.mff.cuni.cz/~mikulas/vyplody/hpfs/index-e.cgi
-F: fs/hpfs/
-
HS3001 Hardware Temperature and Humidity Sensor
M: Andre Werner <andre.werner@systec-electronic.com>
L: linux-hwmon@vger.kernel.org
diff --git a/fs/Kconfig b/fs/Kconfig
index 46313f65ee54..ca84ee8a85ee 100644
--- a/fs/Kconfig
+++ b/fs/Kconfig
@@ -321,7 +321,6 @@ source "fs/cramfs/Kconfig"
source "fs/squashfs/Kconfig"
source "fs/minix/Kconfig"
source "fs/omfs/Kconfig"
-source "fs/hpfs/Kconfig"
source "fs/qnx4/Kconfig"
source "fs/qnx6/Kconfig"
source "fs/resctrl/Kconfig"
diff --git a/fs/Makefile b/fs/Makefile
index 16f1108b64e1..a741172ac6d4 100644
--- a/fs/Makefile
+++ b/fs/Makefile
@@ -87,7 +87,6 @@ obj-$(CONFIG_LOCKD) += lockd/
obj-$(CONFIG_NLS) += nls/
obj-y += unicode/
obj-$(CONFIG_SMBFS) += smb/
-obj-$(CONFIG_HPFS_FS) += hpfs/
obj-$(CONFIG_NTFS_FS) += ntfs/
obj-$(CONFIG_NTFS3_FS) += ntfs3/
obj-$(CONFIG_UFS_FS) += ufs/
diff --git a/fs/hpfs/Kconfig b/fs/hpfs/Kconfig
deleted file mode 100644
index ac1e9318e65a..000000000000
--- a/fs/hpfs/Kconfig
+++ /dev/null
@@ -1,17 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0-only
-config HPFS_FS
- tristate "OS/2 HPFS file system support"
- depends on BLOCK
- select BUFFER_HEAD
- select FS_IOMAP
- help
- OS/2 is IBM's operating system for PC's, the same as Warp, and HPFS
- is the file system used for organizing files on OS/2 hard disk
- partitions. Say Y if you want to be able to read files from and
- write files to an OS/2 HPFS partition on your hard drive. OS/2
- floppies however are in regular MSDOS format, so you don't need this
- option in order to be able to read them. Read
- <file:Documentation/filesystems/hpfs.rst>.
-
- To compile this file system support as a module, choose M here: the
- module will be called hpfs. If unsure, say N.
diff --git a/fs/hpfs/Makefile b/fs/hpfs/Makefile
deleted file mode 100644
index 153c17382c19..000000000000
--- a/fs/hpfs/Makefile
+++ /dev/null
@@ -1,9 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0-only
-#
-# Makefile for the Linux hpfs filesystem routines.
-#
-
-obj-$(CONFIG_HPFS_FS) += hpfs.o
-
-hpfs-objs := alloc.o anode.o buffer.o dentry.o dir.o dnode.o ea.o file.o \
- inode.o map.o name.o namei.o super.o
diff --git a/fs/hpfs/alloc.c b/fs/hpfs/alloc.c
deleted file mode 100644
index f5150372618e..000000000000
--- a/fs/hpfs/alloc.c
+++ /dev/null
@@ -1,582 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * linux/fs/hpfs/alloc.c
- *
- * Mikulas Patocka (mikulas@artax.karlin.mff.cuni.cz), 1998-1999
- *
- * HPFS bitmap operations
- */
-
-#include "hpfs_fn.h"
-
-static void hpfs_claim_alloc(struct super_block *s, secno sec)
-{
- struct hpfs_sb_info *sbi = hpfs_sb(s);
- if (sbi->sb_n_free != (unsigned)-1) {
- if (unlikely(!sbi->sb_n_free)) {
- hpfs_error(s, "free count underflow, allocating sector %08x", sec);
- sbi->sb_n_free = -1;
- return;
- }
- sbi->sb_n_free--;
- }
-}
-
-static void hpfs_claim_free(struct super_block *s, secno sec)
-{
- struct hpfs_sb_info *sbi = hpfs_sb(s);
- if (sbi->sb_n_free != (unsigned)-1) {
- if (unlikely(sbi->sb_n_free >= sbi->sb_fs_size)) {
- hpfs_error(s, "free count overflow, freeing sector %08x", sec);
- sbi->sb_n_free = -1;
- return;
- }
- sbi->sb_n_free++;
- }
-}
-
-static void hpfs_claim_dirband_alloc(struct super_block *s, secno sec)
-{
- struct hpfs_sb_info *sbi = hpfs_sb(s);
- if (sbi->sb_n_free_dnodes != (unsigned)-1) {
- if (unlikely(!sbi->sb_n_free_dnodes)) {
- hpfs_error(s, "dirband free count underflow, allocating sector %08x", sec);
- sbi->sb_n_free_dnodes = -1;
- return;
- }
- sbi->sb_n_free_dnodes--;
- }
-}
-
-static void hpfs_claim_dirband_free(struct super_block *s, secno sec)
-{
- struct hpfs_sb_info *sbi = hpfs_sb(s);
- if (sbi->sb_n_free_dnodes != (unsigned)-1) {
- if (unlikely(sbi->sb_n_free_dnodes >= sbi->sb_dirband_size / 4)) {
- hpfs_error(s, "dirband free count overflow, freeing sector %08x", sec);
- sbi->sb_n_free_dnodes = -1;
- return;
- }
- sbi->sb_n_free_dnodes++;
- }
-}
-
-/*
- * Check if a sector is allocated in bitmap
- * This is really slow. Turned on only if chk==2
- */
-
-static int chk_if_allocated(struct super_block *s, secno sec, char *msg)
-{
- struct quad_buffer_head qbh;
- __le32 *bmp;
- if (!(bmp = hpfs_map_bitmap(s, sec >> 14, &qbh, "chk"))) goto fail;
- if ((le32_to_cpu(bmp[(sec & 0x3fff) >> 5]) >> (sec & 0x1f)) & 1) {
- hpfs_error(s, "sector '%s' - %08x not allocated in bitmap", msg, sec);
- goto fail1;
- }
- hpfs_brelse4(&qbh);
- if (sec >= hpfs_sb(s)->sb_dirband_start && sec < hpfs_sb(s)->sb_dirband_start + hpfs_sb(s)->sb_dirband_size) {
- unsigned ssec = (sec - hpfs_sb(s)->sb_dirband_start) / 4;
- if (!(bmp = hpfs_map_dnode_bitmap(s, &qbh))) goto fail;
- if ((le32_to_cpu(bmp[ssec >> 5]) >> (ssec & 0x1f)) & 1) {
- hpfs_error(s, "sector '%s' - %08x not allocated in directory bitmap", msg, sec);
- goto fail1;
- }
- hpfs_brelse4(&qbh);
- }
- return 0;
- fail1:
- hpfs_brelse4(&qbh);
- fail:
- return 1;
-}
-
-/*
- * Check if sector(s) have proper number and additionally check if they're
- * allocated in bitmap.
- */
-
-int hpfs_chk_sectors(struct super_block *s, secno start, int len, char *msg)
-{
- if (start + len < start || start < 0x12 ||
- start + len > hpfs_sb(s)->sb_fs_size) {
- hpfs_error(s, "sector(s) '%s' badly placed at %08x", msg, start);
- return 1;
- }
- if (hpfs_sb(s)->sb_chk>=2) {
- int i;
- for (i = 0; i < len; i++)
- if (chk_if_allocated(s, start + i, msg)) return 1;
- }
- return 0;
-}
-
-static secno alloc_in_bmp(struct super_block *s, secno near, unsigned n, unsigned forward)
-{
- struct quad_buffer_head qbh;
- __le32 *bmp;
- unsigned bs = near & ~0x3fff;
- unsigned nr = (near & 0x3fff) & ~(n - 1);
- /*unsigned mnr;*/
- unsigned i, q;
- int a, b;
- secno ret = 0;
- if (n != 1 && n != 4) {
- hpfs_error(s, "Bad allocation size: %d", n);
- return 0;
- }
- if (bs != ~0x3fff) {
- if (!(bmp = hpfs_map_bitmap(s, near >> 14, &qbh, "aib"))) goto uls;
- } else {
- if (!(bmp = hpfs_map_dnode_bitmap(s, &qbh))) goto uls;
- }
- if (!tstbits(bmp, nr, n + forward)) {
- ret = bs + nr;
- goto rt;
- }
- q = nr + n; b = 0;
- while ((a = tstbits(bmp, q, n + forward)) != 0) {
- q += a;
- if (n != 1) q = ((q-1)&~(n-1))+n;
- if (!b) {
- if (q>>5 != nr>>5) {
- b = 1;
- q = nr & 0x1f;
- }
- } else if (q > nr) break;
- }
- if (!a) {
- ret = bs + q;
- goto rt;
- }
- nr >>= 5;
- /*for (i = nr + 1; i != nr; i++, i &= 0x1ff) */
- i = nr;
- do {
- if (!le32_to_cpu(bmp[i])) goto cont;
- if (n + forward >= 0x3f && le32_to_cpu(bmp[i]) != 0xffffffff) goto cont;
- q = i<<5;
- if (i > 0) {
- unsigned k = le32_to_cpu(bmp[i-1]);
- while (k & 0x80000000) {
- q--; k <<= 1;
- }
- }
- if (n != 1) q = ((q-1)&~(n-1))+n;
- while ((a = tstbits(bmp, q, n + forward)) != 0) {
- q += a;
- if (n != 1) q = ((q-1)&~(n-1))+n;
- if (q>>5 > i) break;
- }
- if (!a) {
- ret = bs + q;
- goto rt;
- }
- cont:
- i++, i &= 0x1ff;
- } while (i != nr);
- rt:
- if (ret) {
- if (hpfs_sb(s)->sb_chk && ((ret >> 14) != (bs >> 14) || (le32_to_cpu(bmp[(ret & 0x3fff) >> 5]) | ~(((1 << n) - 1) << (ret & 0x1f))) != 0xffffffff)) {
- hpfs_error(s, "Allocation doesn't work! Wanted %d, allocated at %08x", n, ret);
- ret = 0;
- goto b;
- }
- bmp[(ret & 0x3fff) >> 5] &= cpu_to_le32(~(((1 << n) - 1) << (ret & 0x1f)));
- hpfs_mark_4buffers_dirty(&qbh);
- }
- b:
- hpfs_brelse4(&qbh);
- uls:
- return ret;
-}
-
-/*
- * Allocation strategy: 1) search place near the sector specified
- * 2) search bitmap where free sectors last found
- * 3) search all bitmaps
- * 4) search all bitmaps ignoring number of pre-allocated
- * sectors
- */
-
-secno hpfs_alloc_sector(struct super_block *s, secno near, unsigned n, int forward)
-{
- secno sec;
- int i;
- unsigned n_bmps;
- struct hpfs_sb_info *sbi = hpfs_sb(s);
- int f_p = 0;
- int near_bmp;
- if (forward < 0) {
- forward = -forward;
- f_p = 1;
- }
- n_bmps = (sbi->sb_fs_size + 0x4000 - 1) >> 14;
- if (near && near < sbi->sb_fs_size) {
- if ((sec = alloc_in_bmp(s, near, n, f_p ? forward : forward/4))) goto ret;
- near_bmp = near >> 14;
- } else near_bmp = n_bmps / 2;
- /*
- if (b != -1) {
- if ((sec = alloc_in_bmp(s, b<<14, n, f_p ? forward : forward/2))) {
- b &= 0x0fffffff;
- goto ret;
- }
- if (b > 0x10000000) if ((sec = alloc_in_bmp(s, (b&0xfffffff)<<14, n, f_p ? forward : 0))) goto ret;
- */
- if (!f_p) if (forward > sbi->sb_max_fwd_alloc) forward = sbi->sb_max_fwd_alloc;
- less_fwd:
- for (i = 0; i < n_bmps; i++) {
- if (near_bmp+i < n_bmps && ((sec = alloc_in_bmp(s, (near_bmp+i) << 14, n, forward)))) {
- sbi->sb_c_bitmap = near_bmp+i;
- goto ret;
- }
- if (!forward) {
- if (near_bmp-i-1 >= 0 && ((sec = alloc_in_bmp(s, (near_bmp-i-1) << 14, n, forward)))) {
- sbi->sb_c_bitmap = near_bmp-i-1;
- goto ret;
- }
- } else {
- if (near_bmp+i >= n_bmps && ((sec = alloc_in_bmp(s, (near_bmp+i-n_bmps) << 14, n, forward)))) {
- sbi->sb_c_bitmap = near_bmp+i-n_bmps;
- goto ret;
- }
- }
- if (i == 1 && sbi->sb_c_bitmap != -1 && ((sec = alloc_in_bmp(s, (sbi->sb_c_bitmap) << 14, n, forward)))) {
- goto ret;
- }
- }
- if (!f_p) {
- if (forward) {
- sbi->sb_max_fwd_alloc = forward * 3 / 4;
- forward /= 2;
- goto less_fwd;
- }
- }
- sec = 0;
- ret:
- if (sec) {
- i = 0;
- do
- hpfs_claim_alloc(s, sec + i);
- while (unlikely(++i < n));
- }
- if (sec && f_p) {
- for (i = 0; i < forward; i++) {
- if (!hpfs_alloc_if_possible(s, sec + n + i)) {
- hpfs_error(s, "Prealloc doesn't work! Wanted %d, allocated at %08x, can't allocate %d", forward, sec, i);
- sec = 0;
- break;
- }
- }
- }
- return sec;
-}
-
-static secno alloc_in_dirband(struct super_block *s, secno near)
-{
- unsigned nr = near;
- secno sec;
- struct hpfs_sb_info *sbi = hpfs_sb(s);
- if (nr < sbi->sb_dirband_start)
- nr = sbi->sb_dirband_start;
- if (nr >= sbi->sb_dirband_start + sbi->sb_dirband_size)
- nr = sbi->sb_dirband_start + sbi->sb_dirband_size - 4;
- nr -= sbi->sb_dirband_start;
- nr >>= 2;
- sec = alloc_in_bmp(s, (~0x3fff) | nr, 1, 0);
- if (!sec) return 0;
- hpfs_claim_dirband_alloc(s, sec);
- return ((sec & 0x3fff) << 2) + sbi->sb_dirband_start;
-}
-
-/* Alloc sector if it's free */
-
-int hpfs_alloc_if_possible(struct super_block *s, secno sec)
-{
- struct quad_buffer_head qbh;
- __le32 *bmp;
- if (!(bmp = hpfs_map_bitmap(s, sec >> 14, &qbh, "aip"))) goto end;
- if (le32_to_cpu(bmp[(sec & 0x3fff) >> 5]) & (1 << (sec & 0x1f))) {
- bmp[(sec & 0x3fff) >> 5] &= cpu_to_le32(~(1 << (sec & 0x1f)));
- hpfs_mark_4buffers_dirty(&qbh);
- hpfs_brelse4(&qbh);
- hpfs_claim_alloc(s, sec);
- return 1;
- }
- hpfs_brelse4(&qbh);
- end:
- return 0;
-}
-
-/* Free sectors in bitmaps */
-
-void hpfs_free_sectors(struct super_block *s, secno sec, unsigned n)
-{
- struct quad_buffer_head qbh;
- __le32 *bmp;
- struct hpfs_sb_info *sbi = hpfs_sb(s);
- /*pr_info("2 - ");*/
- if (!n) return;
- if (sec < 0x12) {
- hpfs_error(s, "Trying to free reserved sector %08x", sec);
- return;
- }
- sbi->sb_max_fwd_alloc += n > 0xffff ? 0xffff : n;
- if (sbi->sb_max_fwd_alloc > 0xffffff) sbi->sb_max_fwd_alloc = 0xffffff;
- new_map:
- if (!(bmp = hpfs_map_bitmap(s, sec >> 14, &qbh, "free"))) {
- return;
- }
- new_tst:
- if ((le32_to_cpu(bmp[(sec & 0x3fff) >> 5]) >> (sec & 0x1f) & 1)) {
- hpfs_error(s, "sector %08x not allocated", sec);
- hpfs_brelse4(&qbh);
- return;
- }
- bmp[(sec & 0x3fff) >> 5] |= cpu_to_le32(1 << (sec & 0x1f));
- hpfs_claim_free(s, sec);
- if (!--n) {
- hpfs_mark_4buffers_dirty(&qbh);
- hpfs_brelse4(&qbh);
- return;
- }
- if (!(++sec & 0x3fff)) {
- hpfs_mark_4buffers_dirty(&qbh);
- hpfs_brelse4(&qbh);
- goto new_map;
- }
- goto new_tst;
-}
-
-/*
- * Check if there are at least n free dnodes on the filesystem.
- * Called before adding to dnode. If we run out of space while
- * splitting dnodes, it would corrupt dnode tree.
- */
-
-int hpfs_check_free_dnodes(struct super_block *s, int n)
-{
- int n_bmps = (hpfs_sb(s)->sb_fs_size + 0x4000 - 1) >> 14;
- int b = hpfs_sb(s)->sb_c_bitmap & 0x0fffffff;
- int i, j;
- __le32 *bmp;
- struct quad_buffer_head qbh;
- if ((bmp = hpfs_map_dnode_bitmap(s, &qbh))) {
- for (j = 0; j < 512; j++) {
- unsigned k;
- if (!le32_to_cpu(bmp[j])) continue;
- for (k = le32_to_cpu(bmp[j]); k; k >>= 1) if (k & 1) if (!--n) {
- hpfs_brelse4(&qbh);
- return 0;
- }
- }
- hpfs_brelse4(&qbh);
- }
- i = 0;
- if (hpfs_sb(s)->sb_c_bitmap != -1) {
- bmp = hpfs_map_bitmap(s, b, &qbh, "chkdn1");
- goto chk_bmp;
- }
- chk_next:
- if (i == b) i++;
- if (i >= n_bmps) return 1;
- bmp = hpfs_map_bitmap(s, i, &qbh, "chkdn2");
- chk_bmp:
- if (bmp) {
- for (j = 0; j < 512; j++) {
- u32 k;
- if (!le32_to_cpu(bmp[j])) continue;
- for (k = 0xf; k; k <<= 4)
- if ((le32_to_cpu(bmp[j]) & k) == k) {
- if (!--n) {
- hpfs_brelse4(&qbh);
- return 0;
- }
- }
- }
- hpfs_brelse4(&qbh);
- }
- i++;
- goto chk_next;
-}
-
-void hpfs_free_dnode(struct super_block *s, dnode_secno dno)
-{
- if (hpfs_sb(s)->sb_chk) if (dno & 3) {
- hpfs_error(s, "hpfs_free_dnode: dnode %08x not aligned", dno);
- return;
- }
- if (dno < hpfs_sb(s)->sb_dirband_start ||
- dno >= hpfs_sb(s)->sb_dirband_start + hpfs_sb(s)->sb_dirband_size) {
- hpfs_free_sectors(s, dno, 4);
- } else {
- struct quad_buffer_head qbh;
- __le32 *bmp;
- unsigned ssec = (dno - hpfs_sb(s)->sb_dirband_start) / 4;
- if (!(bmp = hpfs_map_dnode_bitmap(s, &qbh))) {
- return;
- }
- bmp[ssec >> 5] |= cpu_to_le32(1 << (ssec & 0x1f));
- hpfs_mark_4buffers_dirty(&qbh);
- hpfs_brelse4(&qbh);
- hpfs_claim_dirband_free(s, dno);
- }
-}
-
-struct dnode *hpfs_alloc_dnode(struct super_block *s, secno near,
- dnode_secno *dno, struct quad_buffer_head *qbh)
-{
- struct dnode *d;
- if (hpfs_get_free_dnodes(s) > FREE_DNODES_ADD) {
- if (!(*dno = alloc_in_dirband(s, near)))
- if (!(*dno = hpfs_alloc_sector(s, near, 4, 0))) return NULL;
- } else {
- if (!(*dno = hpfs_alloc_sector(s, near, 4, 0)))
- if (!(*dno = alloc_in_dirband(s, near))) return NULL;
- }
- if (!(d = hpfs_get_4sectors(s, *dno, qbh))) {
- hpfs_free_dnode(s, *dno);
- return NULL;
- }
- memset(d, 0, 2048);
- d->magic = cpu_to_le32(DNODE_MAGIC);
- d->first_free = cpu_to_le32(52);
- d->dirent[0] = 32;
- d->dirent[2] = 8;
- d->dirent[30] = 1;
- d->dirent[31] = 255;
- d->self = cpu_to_le32(*dno);
- return d;
-}
-
-struct fnode *hpfs_alloc_fnode(struct super_block *s, secno near, fnode_secno *fno,
- struct buffer_head **bh)
-{
- struct fnode *f;
- if (!(*fno = hpfs_alloc_sector(s, near, 1, FNODE_ALLOC_FWD))) return NULL;
- if (!(f = hpfs_get_sector(s, *fno, bh))) {
- hpfs_free_sectors(s, *fno, 1);
- return NULL;
- }
- memset(f, 0, 512);
- f->magic = cpu_to_le32(FNODE_MAGIC);
- f->ea_offs = cpu_to_le16(0xc4);
- f->btree.n_free_nodes = 8;
- f->btree.first_free = cpu_to_le16(8);
- return f;
-}
-
-struct anode *hpfs_alloc_anode(struct super_block *s, secno near, anode_secno *ano,
- struct buffer_head **bh)
-{
- struct anode *a;
- if (!(*ano = hpfs_alloc_sector(s, near, 1, ANODE_ALLOC_FWD))) return NULL;
- if (!(a = hpfs_get_sector(s, *ano, bh))) {
- hpfs_free_sectors(s, *ano, 1);
- return NULL;
- }
- memset(a, 0, 512);
- a->magic = cpu_to_le32(ANODE_MAGIC);
- a->self = cpu_to_le32(*ano);
- a->btree.n_free_nodes = 40;
- a->btree.n_used_nodes = 0;
- a->btree.first_free = cpu_to_le16(8);
- return a;
-}
-
-static unsigned find_run(__le32 *bmp, unsigned *idx)
-{
- unsigned len;
- while (tstbits(bmp, *idx, 1)) {
- (*idx)++;
- if (unlikely(*idx >= 0x4000))
- return 0;
- }
- len = 1;
- while (!tstbits(bmp, *idx + len, 1))
- len++;
- return len;
-}
-
-static int do_trim(struct super_block *s, secno start, unsigned len, secno limit_start, secno limit_end, unsigned minlen, unsigned *result)
-{
- int err;
- secno end;
- if (fatal_signal_pending(current))
- return -EINTR;
- end = start + len;
- if (start < limit_start)
- start = limit_start;
- if (end > limit_end)
- end = limit_end;
- if (start >= end)
- return 0;
- if (end - start < minlen)
- return 0;
- err = sb_issue_discard(s, start, end - start, GFP_NOFS, 0);
- if (err)
- return err;
- *result += end - start;
- return 0;
-}
-
-int hpfs_trim_fs(struct super_block *s, u64 start, u64 end, u64 minlen, unsigned *result)
-{
- int err = 0;
- struct hpfs_sb_info *sbi = hpfs_sb(s);
- unsigned idx, len, start_bmp, end_bmp;
- __le32 *bmp;
- struct quad_buffer_head qbh;
-
- *result = 0;
- if (!end || end > sbi->sb_fs_size)
- end = sbi->sb_fs_size;
- if (start >= sbi->sb_fs_size)
- return 0;
- if (minlen > 0x4000)
- return 0;
- if (start < sbi->sb_dirband_start + sbi->sb_dirband_size && end > sbi->sb_dirband_start) {
- hpfs_lock(s);
- if (sb_rdonly(s)) {
- err = -EROFS;
- goto unlock_1;
- }
- if (!(bmp = hpfs_map_dnode_bitmap(s, &qbh))) {
- err = -EIO;
- goto unlock_1;
- }
- idx = 0;
- while ((len = find_run(bmp, &idx)) && !err) {
- err = do_trim(s, sbi->sb_dirband_start + idx * 4, len * 4, start, end, minlen, result);
- idx += len;
- }
- hpfs_brelse4(&qbh);
-unlock_1:
- hpfs_unlock(s);
- }
- start_bmp = start >> 14;
- end_bmp = (end + 0x3fff) >> 14;
- while (start_bmp < end_bmp && !err) {
- hpfs_lock(s);
- if (sb_rdonly(s)) {
- err = -EROFS;
- goto unlock_2;
- }
- if (!(bmp = hpfs_map_bitmap(s, start_bmp, &qbh, "trim"))) {
- err = -EIO;
- goto unlock_2;
- }
- idx = 0;
- while ((len = find_run(bmp, &idx)) && !err) {
- err = do_trim(s, (start_bmp << 14) + idx, len, start, end, minlen, result);
- idx += len;
- }
- hpfs_brelse4(&qbh);
-unlock_2:
- hpfs_unlock(s);
- start_bmp++;
- }
- return err;
-}
diff --git a/fs/hpfs/anode.c b/fs/hpfs/anode.c
deleted file mode 100644
index a4f5321eafae..000000000000
--- a/fs/hpfs/anode.c
+++ /dev/null
@@ -1,498 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * linux/fs/hpfs/anode.c
- *
- * Mikulas Patocka (mikulas@artax.karlin.mff.cuni.cz), 1998-1999
- *
- * handling HPFS anode tree that contains file allocation info
- */
-
-#include "hpfs_fn.h"
-
-/* Find a sector in allocation tree */
-
-secno hpfs_bplus_lookup(struct super_block *s, struct inode *inode,
- struct bplus_header *btree, unsigned sec,
- struct buffer_head *bh)
-{
- anode_secno a = -1;
- struct anode *anode;
- int i;
- int c1, c2 = 0;
- go_down:
- if (hpfs_sb(s)->sb_chk) if (hpfs_stop_cycles(s, a, &c1, &c2, "hpfs_bplus_lookup")) return -1;
- if (bp_internal(btree)) {
- for (i = 0; i < btree->n_used_nodes; i++)
- if (le32_to_cpu(btree->u.internal[i].file_secno) > sec) {
- a = le32_to_cpu(btree->u.internal[i].down);
- brelse(bh);
- if (!(anode = hpfs_map_anode(s, a, &bh))) return -1;
- btree = GET_BTREE_PTR(&anode->btree);
- goto go_down;
- }
- hpfs_error(s, "sector %08x not found in internal anode %08x", sec, a);
- brelse(bh);
- return -1;
- }
- for (i = 0; i < btree->n_used_nodes; i++)
- if (le32_to_cpu(btree->u.external[i].file_secno) <= sec &&
- le32_to_cpu(btree->u.external[i].file_secno) + le32_to_cpu(btree->u.external[i].length) > sec) {
- a = le32_to_cpu(btree->u.external[i].disk_secno) + sec - le32_to_cpu(btree->u.external[i].file_secno);
- if (hpfs_sb(s)->sb_chk) if (hpfs_chk_sectors(s, a, 1, "data")) {
- brelse(bh);
- return -1;
- }
- if (inode) {
- struct hpfs_inode_info *hpfs_inode = hpfs_i(inode);
- hpfs_inode->i_file_sec = le32_to_cpu(btree->u.external[i].file_secno);
- hpfs_inode->i_disk_sec = le32_to_cpu(btree->u.external[i].disk_secno);
- hpfs_inode->i_n_secs = le32_to_cpu(btree->u.external[i].length);
- }
- brelse(bh);
- return a;
- }
- hpfs_error(s, "sector %08x not found in external anode %08x", sec, a);
- brelse(bh);
- return -1;
-}
-
-/* Add a sector to tree */
-
-secno hpfs_add_sector_to_btree(struct super_block *s, secno node, int fnod, unsigned fsecno)
-{
- struct bplus_header *btree;
- struct anode *anode = NULL, *ranode = NULL;
- struct fnode *fnode;
- anode_secno a, na = -1, ra, up = -1;
- secno se;
- struct buffer_head *bh, *bh1, *bh2;
- int n;
- unsigned fs;
- int c1, c2 = 0;
-
- if (fnod) {
- if (!(fnode = hpfs_map_fnode(s, node, &bh))) return -1;
- btree = GET_BTREE_PTR(&fnode->btree);
- } else {
- if (!(anode = hpfs_map_anode(s, node, &bh))) return -1;
- btree = GET_BTREE_PTR(&anode->btree);
- }
- a = node;
- go_down:
- if ((n = btree->n_used_nodes - 1) < -!!fnod) {
- hpfs_error(s, "anode %08x has no entries", a);
- brelse(bh);
- return -1;
- }
- if (bp_internal(btree)) {
- a = le32_to_cpu(btree->u.internal[n].down);
- btree->u.internal[n].file_secno = cpu_to_le32(-1);
- mark_buffer_dirty(bh);
- brelse(bh);
- if (hpfs_sb(s)->sb_chk)
- if (hpfs_stop_cycles(s, a, &c1, &c2, "hpfs_add_sector_to_btree #1")) return -1;
- if (!(anode = hpfs_map_anode(s, a, &bh))) return -1;
- btree = GET_BTREE_PTR(&anode->btree);
- goto go_down;
- }
- if (n >= 0) {
- if (le32_to_cpu(btree->u.external[n].file_secno) + le32_to_cpu(btree->u.external[n].length) != fsecno) {
- hpfs_error(s, "allocated size %08x, trying to add sector %08x, %cnode %08x",
- le32_to_cpu(btree->u.external[n].file_secno) + le32_to_cpu(btree->u.external[n].length), fsecno,
- fnod?'f':'a', node);
- brelse(bh);
- return -1;
- }
- if (hpfs_alloc_if_possible(s, se = le32_to_cpu(btree->u.external[n].disk_secno) + le32_to_cpu(btree->u.external[n].length))) {
- le32_add_cpu(&btree->u.external[n].length, 1);
- mark_buffer_dirty(bh);
- brelse(bh);
- return se;
- }
- } else {
- if (fsecno) {
- hpfs_error(s, "empty file %08x, trying to add sector %08x", node, fsecno);
- brelse(bh);
- return -1;
- }
- se = !fnod ? node : (node + 16384) & ~16383;
- }
- if (!(se = hpfs_alloc_sector(s, se, 1, fsecno*ALLOC_M>ALLOC_FWD_MAX ? ALLOC_FWD_MAX : fsecno*ALLOC_M<ALLOC_FWD_MIN ? ALLOC_FWD_MIN : fsecno*ALLOC_M))) {
- brelse(bh);
- return -1;
- }
- fs = n < 0 ? 0 : le32_to_cpu(btree->u.external[n].file_secno) + le32_to_cpu(btree->u.external[n].length);
- if (!btree->n_free_nodes) {
- up = a != node ? le32_to_cpu(anode->up) : -1;
- if (!(anode = hpfs_alloc_anode(s, a, &na, &bh1))) {
- brelse(bh);
- hpfs_free_sectors(s, se, 1);
- return -1;
- }
- if (a == node && fnod) {
- anode->up = cpu_to_le32(node);
- anode->btree.flags |= BP_fnode_parent;
- anode->btree.n_used_nodes = btree->n_used_nodes;
- anode->btree.first_free = btree->first_free;
- anode->btree.n_free_nodes = 40 - anode->btree.n_used_nodes;
- memcpy(&anode->u, &btree->u, btree->n_used_nodes * 12);
- btree->flags |= BP_internal;
- btree->n_free_nodes = 11;
- btree->n_used_nodes = 1;
- btree->first_free = cpu_to_le16((char *)&(btree->u.internal[1]) - (char *)btree);
- btree->u.internal[0].file_secno = cpu_to_le32(-1);
- btree->u.internal[0].down = cpu_to_le32(na);
- mark_buffer_dirty(bh);
- } else if (!(ranode = hpfs_alloc_anode(s, /*a*/0, &ra, &bh2))) {
- brelse(bh);
- brelse(bh1);
- hpfs_free_sectors(s, se, 1);
- hpfs_free_sectors(s, na, 1);
- return -1;
- }
- brelse(bh);
- bh = bh1;
- btree = GET_BTREE_PTR(&anode->btree);
- }
- btree->n_free_nodes--; n = btree->n_used_nodes++;
- le16_add_cpu(&btree->first_free, 12);
- btree->u.external[n].disk_secno = cpu_to_le32(se);
- btree->u.external[n].file_secno = cpu_to_le32(fs);
- btree->u.external[n].length = cpu_to_le32(1);
- mark_buffer_dirty(bh);
- brelse(bh);
- if ((a == node && fnod) || na == -1) return se;
- c2 = 0;
- while (up != (anode_secno)-1) {
- struct anode *new_anode;
- if (hpfs_sb(s)->sb_chk)
- if (hpfs_stop_cycles(s, up, &c1, &c2, "hpfs_add_sector_to_btree #2")) return -1;
- if (up != node || !fnod) {
- if (!(anode = hpfs_map_anode(s, up, &bh))) return -1;
- btree = GET_BTREE_PTR(&anode->btree);
- } else {
- if (!(fnode = hpfs_map_fnode(s, up, &bh))) return -1;
- btree = GET_BTREE_PTR(&fnode->btree);
- }
- if (btree->n_free_nodes) {
- btree->n_free_nodes--; n = btree->n_used_nodes++;
- le16_add_cpu(&btree->first_free, 8);
- btree->u.internal[n].file_secno = cpu_to_le32(-1);
- btree->u.internal[n].down = cpu_to_le32(na);
- btree->u.internal[n-1].file_secno = cpu_to_le32(fs);
- mark_buffer_dirty(bh);
- brelse(bh);
- brelse(bh2);
- hpfs_free_sectors(s, ra, 1);
- if ((anode = hpfs_map_anode(s, na, &bh))) {
- anode->up = cpu_to_le32(up);
- if (up == node && fnod)
- anode->btree.flags |= BP_fnode_parent;
- else
- anode->btree.flags &= ~BP_fnode_parent;
- mark_buffer_dirty(bh);
- brelse(bh);
- }
- return se;
- }
- up = up != node ? le32_to_cpu(anode->up) : -1;
- btree->u.internal[btree->n_used_nodes - 1].file_secno = cpu_to_le32(/*fs*/-1);
- mark_buffer_dirty(bh);
- brelse(bh);
- a = na;
- if ((new_anode = hpfs_alloc_anode(s, a, &na, &bh))) {
- anode = new_anode;
- /*anode->up = cpu_to_le32(up != -1 ? up : ra);*/
- anode->btree.flags |= BP_internal;
- anode->btree.n_used_nodes = 1;
- anode->btree.n_free_nodes = 59;
- anode->btree.first_free = cpu_to_le16(16);
- GET_BTREE_PTR(&anode->btree)->u.internal[0].down = cpu_to_le32(a);
- GET_BTREE_PTR(&anode->btree)->u.internal[0].file_secno = cpu_to_le32(-1);
- mark_buffer_dirty(bh);
- brelse(bh);
- if ((anode = hpfs_map_anode(s, a, &bh))) {
- anode->up = cpu_to_le32(na);
- mark_buffer_dirty(bh);
- brelse(bh);
- }
- } else na = a;
- }
- if ((anode = hpfs_map_anode(s, na, &bh))) {
- anode->up = cpu_to_le32(node);
- if (fnod)
- anode->btree.flags |= BP_fnode_parent;
- mark_buffer_dirty(bh);
- brelse(bh);
- }
- if (!fnod) {
- if (!(anode = hpfs_map_anode(s, node, &bh))) {
- brelse(bh2);
- return -1;
- }
- btree = GET_BTREE_PTR(&anode->btree);
- } else {
- if (!(fnode = hpfs_map_fnode(s, node, &bh))) {
- brelse(bh2);
- return -1;
- }
- btree = GET_BTREE_PTR(&fnode->btree);
- }
- ranode->up = cpu_to_le32(node);
- memcpy(&ranode->btree, btree, le16_to_cpu(btree->first_free));
- if (fnod)
- ranode->btree.flags |= BP_fnode_parent;
- GET_BTREE_PTR(&ranode->btree)->n_free_nodes = (bp_internal(GET_BTREE_PTR(&ranode->btree)) ? 60 : 40) - GET_BTREE_PTR(&ranode->btree)->n_used_nodes;
- if (bp_internal(GET_BTREE_PTR(&ranode->btree))) for (n = 0; n < GET_BTREE_PTR(&ranode->btree)->n_used_nodes; n++) {
- struct anode *unode;
- if ((unode = hpfs_map_anode(s, le32_to_cpu(ranode->u.internal[n].down), &bh1))) {
- unode->up = cpu_to_le32(ra);
- unode->btree.flags &= ~BP_fnode_parent;
- mark_buffer_dirty(bh1);
- brelse(bh1);
- }
- }
- btree->flags |= BP_internal;
- btree->n_free_nodes = fnod ? 10 : 58;
- btree->n_used_nodes = 2;
- btree->first_free = cpu_to_le16((char *)&btree->u.internal[2] - (char *)btree);
- btree->u.internal[0].file_secno = cpu_to_le32(fs);
- btree->u.internal[0].down = cpu_to_le32(ra);
- btree->u.internal[1].file_secno = cpu_to_le32(-1);
- btree->u.internal[1].down = cpu_to_le32(na);
- mark_buffer_dirty(bh);
- brelse(bh);
- mark_buffer_dirty(bh2);
- brelse(bh2);
- return se;
-}
-
-/*
- * Remove allocation tree. Recursion would look much nicer but
- * I want to avoid it because it can cause stack overflow.
- */
-
-void hpfs_remove_btree(struct super_block *s, struct bplus_header *btree)
-{
- struct bplus_header *btree1 = btree;
- struct anode *anode = NULL;
- anode_secno ano = 0, oano;
- struct buffer_head *bh;
- int level = 0;
- int pos = 0;
- int i;
- int c1, c2 = 0;
- int d1, d2;
- go_down:
- d2 = 0;
- while (bp_internal(btree1)) {
- ano = le32_to_cpu(btree1->u.internal[pos].down);
- if (level) brelse(bh);
- if (hpfs_sb(s)->sb_chk)
- if (hpfs_stop_cycles(s, ano, &d1, &d2, "hpfs_remove_btree #1"))
- return;
- if (!(anode = hpfs_map_anode(s, ano, &bh))) return;
- btree1 = GET_BTREE_PTR(&anode->btree);
- level++;
- pos = 0;
- }
- for (i = 0; i < btree1->n_used_nodes; i++)
- hpfs_free_sectors(s, le32_to_cpu(btree1->u.external[i].disk_secno), le32_to_cpu(btree1->u.external[i].length));
- go_up:
- if (!level) return;
- brelse(bh);
- if (hpfs_sb(s)->sb_chk)
- if (hpfs_stop_cycles(s, ano, &c1, &c2, "hpfs_remove_btree #2")) return;
- hpfs_free_sectors(s, ano, 1);
- oano = ano;
- ano = le32_to_cpu(anode->up);
- if (--level) {
- if (!(anode = hpfs_map_anode(s, ano, &bh))) return;
- btree1 = GET_BTREE_PTR(&anode->btree);
- } else btree1 = btree;
- for (i = 0; i < btree1->n_used_nodes; i++) {
- if (le32_to_cpu(btree1->u.internal[i].down) == oano) {
- if ((pos = i + 1) < btree1->n_used_nodes)
- goto go_down;
- else
- goto go_up;
- }
- }
- hpfs_error(s,
- "reference to anode %08x not found in anode %08x "
- "(probably bad up pointer)",
- oano, level ? ano : -1);
- if (level)
- brelse(bh);
-}
-
-/* Just a wrapper around hpfs_bplus_lookup .. used for reading eas */
-
-static secno anode_lookup(struct super_block *s, anode_secno a, unsigned sec)
-{
- struct anode *anode;
- struct buffer_head *bh;
- if (!(anode = hpfs_map_anode(s, a, &bh))) return -1;
- return hpfs_bplus_lookup(s, NULL, GET_BTREE_PTR(&anode->btree), sec, bh);
-}
-
-int hpfs_ea_read(struct super_block *s, secno a, int ano, unsigned pos,
- unsigned len, char *buf)
-{
- struct buffer_head *bh;
- char *data;
- secno sec;
- unsigned l;
- while (len) {
- if (ano) {
- if ((sec = anode_lookup(s, a, pos >> 9)) == -1)
- return -1;
- } else sec = a + (pos >> 9);
- if (hpfs_sb(s)->sb_chk) if (hpfs_chk_sectors(s, sec, 1, "ea #1")) return -1;
- if (!(data = hpfs_map_sector(s, sec, &bh, (len - 1) >> 9)))
- return -1;
- l = 0x200 - (pos & 0x1ff); if (l > len) l = len;
- memcpy(buf, data + (pos & 0x1ff), l);
- brelse(bh);
- buf += l; pos += l; len -= l;
- }
- return 0;
-}
-
-int hpfs_ea_write(struct super_block *s, secno a, int ano, unsigned pos,
- unsigned len, const char *buf)
-{
- struct buffer_head *bh;
- char *data;
- secno sec;
- unsigned l;
- while (len) {
- if (ano) {
- if ((sec = anode_lookup(s, a, pos >> 9)) == -1)
- return -1;
- } else sec = a + (pos >> 9);
- if (hpfs_sb(s)->sb_chk) if (hpfs_chk_sectors(s, sec, 1, "ea #2")) return -1;
- if (!(data = hpfs_map_sector(s, sec, &bh, (len - 1) >> 9)))
- return -1;
- l = 0x200 - (pos & 0x1ff); if (l > len) l = len;
- memcpy(data + (pos & 0x1ff), buf, l);
- mark_buffer_dirty(bh);
- brelse(bh);
- buf += l; pos += l; len -= l;
- }
- return 0;
-}
-
-void hpfs_ea_remove(struct super_block *s, secno a, int ano, unsigned len)
-{
- struct anode *anode;
- struct buffer_head *bh;
- if (ano) {
- if (!(anode = hpfs_map_anode(s, a, &bh))) return;
- hpfs_remove_btree(s, GET_BTREE_PTR(&anode->btree));
- brelse(bh);
- hpfs_free_sectors(s, a, 1);
- } else hpfs_free_sectors(s, a, (len + 511) >> 9);
-}
-
-/* Truncate allocation tree. Doesn't join anodes - I hope it doesn't matter */
-
-void hpfs_truncate_btree(struct super_block *s, secno f, int fno, unsigned secs)
-{
- struct fnode *fnode;
- struct anode *anode;
- struct buffer_head *bh;
- struct bplus_header *btree;
- anode_secno node = f;
- int i, j, nodes;
- int c1, c2 = 0;
- if (fno) {
- if (!(fnode = hpfs_map_fnode(s, f, &bh))) return;
- btree = GET_BTREE_PTR(&fnode->btree);
- } else {
- if (!(anode = hpfs_map_anode(s, f, &bh))) return;
- btree = GET_BTREE_PTR(&anode->btree);
- }
- if (!secs) {
- hpfs_remove_btree(s, btree);
- if (fno) {
- btree->n_free_nodes = 8;
- btree->n_used_nodes = 0;
- btree->first_free = cpu_to_le16(8);
- btree->flags &= ~BP_internal;
- mark_buffer_dirty(bh);
- } else hpfs_free_sectors(s, f, 1);
- brelse(bh);
- return;
- }
- while (bp_internal(btree)) {
- nodes = btree->n_used_nodes + btree->n_free_nodes;
- for (i = 0; i < btree->n_used_nodes; i++)
- if (le32_to_cpu(btree->u.internal[i].file_secno) >= secs) goto f;
- brelse(bh);
- hpfs_error(s, "internal btree %08x doesn't end with -1", node);
- return;
- f:
- for (j = i + 1; j < btree->n_used_nodes; j++)
- hpfs_ea_remove(s, le32_to_cpu(btree->u.internal[j].down), 1, 0);
- btree->n_used_nodes = i + 1;
- btree->n_free_nodes = nodes - btree->n_used_nodes;
- btree->first_free = cpu_to_le16(8 + 8 * btree->n_used_nodes);
- mark_buffer_dirty(bh);
- if (btree->u.internal[i].file_secno == cpu_to_le32(secs)) {
- brelse(bh);
- return;
- }
- node = le32_to_cpu(btree->u.internal[i].down);
- brelse(bh);
- if (hpfs_sb(s)->sb_chk)
- if (hpfs_stop_cycles(s, node, &c1, &c2, "hpfs_truncate_btree"))
- return;
- if (!(anode = hpfs_map_anode(s, node, &bh))) return;
- btree = GET_BTREE_PTR(&anode->btree);
- }
- nodes = btree->n_used_nodes + btree->n_free_nodes;
- for (i = 0; i < btree->n_used_nodes; i++)
- if (le32_to_cpu(btree->u.external[i].file_secno) + le32_to_cpu(btree->u.external[i].length) >= secs) goto ff;
- brelse(bh);
- return;
- ff:
- if (secs <= le32_to_cpu(btree->u.external[i].file_secno)) {
- hpfs_error(s, "there is an allocation error in file %08x, sector %08x", f, secs);
- if (i) i--;
- }
- else if (le32_to_cpu(btree->u.external[i].file_secno) + le32_to_cpu(btree->u.external[i].length) > secs) {
- hpfs_free_sectors(s, le32_to_cpu(btree->u.external[i].disk_secno) + secs -
- le32_to_cpu(btree->u.external[i].file_secno), le32_to_cpu(btree->u.external[i].length)
- - secs + le32_to_cpu(btree->u.external[i].file_secno)); /* I hope gcc optimizes this :-) */
- btree->u.external[i].length = cpu_to_le32(secs - le32_to_cpu(btree->u.external[i].file_secno));
- }
- for (j = i + 1; j < btree->n_used_nodes; j++)
- hpfs_free_sectors(s, le32_to_cpu(btree->u.external[j].disk_secno), le32_to_cpu(btree->u.external[j].length));
- btree->n_used_nodes = i + 1;
- btree->n_free_nodes = nodes - btree->n_used_nodes;
- btree->first_free = cpu_to_le16(8 + 12 * btree->n_used_nodes);
- mark_buffer_dirty(bh);
- brelse(bh);
-}
-
-/* Remove file or directory and it's eas - note that directory must
- be empty when this is called. */
-
-void hpfs_remove_fnode(struct super_block *s, fnode_secno fno)
-{
- struct buffer_head *bh;
- struct fnode *fnode;
- struct extended_attribute *ea;
- struct extended_attribute *ea_end;
- if (!(fnode = hpfs_map_fnode(s, fno, &bh))) return;
- if (!fnode_is_dir(fnode)) hpfs_remove_btree(s, GET_BTREE_PTR(&fnode->btree));
- else hpfs_remove_dtree(s, le32_to_cpu(fnode->u.external[0].disk_secno));
- ea_end = fnode_end_ea(fnode);
- for (ea = fnode_ea(fnode); ea < ea_end; ea = next_ea(ea))
- if (ea_indirect(ea))
- hpfs_ea_remove(s, ea_sec(ea), ea_in_anode(ea), ea_len(ea));
- hpfs_ea_ext_remove(s, le32_to_cpu(fnode->ea_secno), fnode_in_anode(fnode), le32_to_cpu(fnode->ea_size_l));
- brelse(bh);
- hpfs_free_sectors(s, fno, 1);
-}
diff --git a/fs/hpfs/buffer.c b/fs/hpfs/buffer.c
deleted file mode 100644
index d39246865c51..000000000000
--- a/fs/hpfs/buffer.c
+++ /dev/null
@@ -1,232 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * linux/fs/hpfs/buffer.c
- *
- * Mikulas Patocka (mikulas@artax.karlin.mff.cuni.cz), 1998-1999
- *
- * general buffer i/o
- */
-#include <linux/sched.h>
-#include <linux/slab.h>
-#include <linux/blkdev.h>
-#include "hpfs_fn.h"
-
-secno hpfs_search_hotfix_map(struct super_block *s, secno sec)
-{
- unsigned i;
- struct hpfs_sb_info *sbi = hpfs_sb(s);
- for (i = 0; unlikely(i < sbi->n_hotfixes); i++) {
- if (sbi->hotfix_from[i] == sec) {
- return sbi->hotfix_to[i];
- }
- }
- return sec;
-}
-
-unsigned hpfs_search_hotfix_map_for_range(struct super_block *s, secno sec, unsigned n)
-{
- unsigned i;
- struct hpfs_sb_info *sbi = hpfs_sb(s);
- for (i = 0; unlikely(i < sbi->n_hotfixes); i++) {
- if (sbi->hotfix_from[i] >= sec && sbi->hotfix_from[i] < sec + n) {
- n = sbi->hotfix_from[i] - sec;
- }
- }
- return n;
-}
-
-void hpfs_prefetch_sectors(struct super_block *s, unsigned secno, int n)
-{
- struct buffer_head *bh;
- struct blk_plug plug;
-
- if (n <= 0 || unlikely(secno >= hpfs_sb(s)->sb_fs_size))
- return;
-
- if (unlikely(hpfs_search_hotfix_map_for_range(s, secno, n) != n))
- return;
-
- bh = sb_find_get_block(s, secno);
- if (bh) {
- if (buffer_uptodate(bh)) {
- brelse(bh);
- return;
- }
- brelse(bh);
- }
-
- blk_start_plug(&plug);
- while (n > 0) {
- if (unlikely(secno >= hpfs_sb(s)->sb_fs_size))
- break;
- sb_breadahead(s, secno);
- secno++;
- n--;
- }
- blk_finish_plug(&plug);
-}
-
-/* Map a sector into a buffer and return pointers to it and to the buffer. */
-
-void *hpfs_map_sector(struct super_block *s, unsigned secno, struct buffer_head **bhp,
- int ahead)
-{
- struct buffer_head *bh;
-
- hpfs_lock_assert(s);
-
- hpfs_prefetch_sectors(s, secno, ahead);
-
- cond_resched();
-
- *bhp = bh = sb_bread(s, hpfs_search_hotfix_map(s, secno));
- if (bh != NULL)
- return bh->b_data;
- else {
- pr_err("%s(): read error\n", __func__);
- return NULL;
- }
-}
-
-/* Like hpfs_map_sector but don't read anything */
-
-void *hpfs_get_sector(struct super_block *s, unsigned secno, struct buffer_head **bhp)
-{
- struct buffer_head *bh;
- /*return hpfs_map_sector(s, secno, bhp, 0);*/
-
- hpfs_lock_assert(s);
-
- cond_resched();
-
- if ((*bhp = bh = sb_getblk(s, hpfs_search_hotfix_map(s, secno))) != NULL) {
- if (!buffer_uptodate(bh)) wait_on_buffer(bh);
- set_buffer_uptodate(bh);
- return bh->b_data;
- } else {
- pr_err("%s(): getblk failed\n", __func__);
- return NULL;
- }
-}
-
-/* Map 4 sectors into a 4buffer and return pointers to it and to the buffer. */
-
-void *hpfs_map_4sectors(struct super_block *s, unsigned secno, struct quad_buffer_head *qbh,
- int ahead)
-{
- char *data;
-
- hpfs_lock_assert(s);
-
- cond_resched();
-
- if (secno & 3) {
- pr_err("%s(): unaligned read\n", __func__);
- return NULL;
- }
-
- hpfs_prefetch_sectors(s, secno, 4 + ahead);
-
- if (!hpfs_map_sector(s, secno + 0, &qbh->bh[0], 0)) goto bail0;
- if (!hpfs_map_sector(s, secno + 1, &qbh->bh[1], 0)) goto bail1;
- if (!hpfs_map_sector(s, secno + 2, &qbh->bh[2], 0)) goto bail2;
- if (!hpfs_map_sector(s, secno + 3, &qbh->bh[3], 0)) goto bail3;
-
- if (likely(qbh->bh[1]->b_data == qbh->bh[0]->b_data + 1 * 512) &&
- likely(qbh->bh[2]->b_data == qbh->bh[0]->b_data + 2 * 512) &&
- likely(qbh->bh[3]->b_data == qbh->bh[0]->b_data + 3 * 512)) {
- return qbh->data = qbh->bh[0]->b_data;
- }
-
- qbh->data = data = kmalloc(2048, GFP_NOFS);
- if (!data) {
- pr_err("%s(): out of memory\n", __func__);
- goto bail4;
- }
-
- memcpy(data + 0 * 512, qbh->bh[0]->b_data, 512);
- memcpy(data + 1 * 512, qbh->bh[1]->b_data, 512);
- memcpy(data + 2 * 512, qbh->bh[2]->b_data, 512);
- memcpy(data + 3 * 512, qbh->bh[3]->b_data, 512);
-
- return data;
-
- bail4:
- brelse(qbh->bh[3]);
- bail3:
- brelse(qbh->bh[2]);
- bail2:
- brelse(qbh->bh[1]);
- bail1:
- brelse(qbh->bh[0]);
- bail0:
- return NULL;
-}
-
-/* Don't read sectors */
-
-void *hpfs_get_4sectors(struct super_block *s, unsigned secno,
- struct quad_buffer_head *qbh)
-{
- cond_resched();
-
- hpfs_lock_assert(s);
-
- if (secno & 3) {
- pr_err("%s(): unaligned read\n", __func__);
- return NULL;
- }
-
- if (!hpfs_get_sector(s, secno + 0, &qbh->bh[0])) goto bail0;
- if (!hpfs_get_sector(s, secno + 1, &qbh->bh[1])) goto bail1;
- if (!hpfs_get_sector(s, secno + 2, &qbh->bh[2])) goto bail2;
- if (!hpfs_get_sector(s, secno + 3, &qbh->bh[3])) goto bail3;
-
- if (likely(qbh->bh[1]->b_data == qbh->bh[0]->b_data + 1 * 512) &&
- likely(qbh->bh[2]->b_data == qbh->bh[0]->b_data + 2 * 512) &&
- likely(qbh->bh[3]->b_data == qbh->bh[0]->b_data + 3 * 512)) {
- return qbh->data = qbh->bh[0]->b_data;
- }
-
- if (!(qbh->data = kmalloc(2048, GFP_NOFS))) {
- pr_err("%s(): out of memory\n", __func__);
- goto bail4;
- }
- return qbh->data;
-
-bail4:
- brelse(qbh->bh[3]);
-bail3:
- brelse(qbh->bh[2]);
-bail2:
- brelse(qbh->bh[1]);
-bail1:
- brelse(qbh->bh[0]);
-bail0:
- return NULL;
-}
-
-
-void hpfs_brelse4(struct quad_buffer_head *qbh)
-{
- if (unlikely(qbh->data != qbh->bh[0]->b_data))
- kfree(qbh->data);
- brelse(qbh->bh[0]);
- brelse(qbh->bh[1]);
- brelse(qbh->bh[2]);
- brelse(qbh->bh[3]);
-}
-
-void hpfs_mark_4buffers_dirty(struct quad_buffer_head *qbh)
-{
- if (unlikely(qbh->data != qbh->bh[0]->b_data)) {
- memcpy(qbh->bh[0]->b_data, qbh->data + 0 * 512, 512);
- memcpy(qbh->bh[1]->b_data, qbh->data + 1 * 512, 512);
- memcpy(qbh->bh[2]->b_data, qbh->data + 2 * 512, 512);
- memcpy(qbh->bh[3]->b_data, qbh->data + 3 * 512, 512);
- }
- mark_buffer_dirty(qbh->bh[0]);
- mark_buffer_dirty(qbh->bh[1]);
- mark_buffer_dirty(qbh->bh[2]);
- mark_buffer_dirty(qbh->bh[3]);
-}
diff --git a/fs/hpfs/dentry.c b/fs/hpfs/dentry.c
deleted file mode 100644
index 89a36fdc68cb..000000000000
--- a/fs/hpfs/dentry.c
+++ /dev/null
@@ -1,62 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * linux/fs/hpfs/dentry.c
- *
- * Mikulas Patocka (mikulas@artax.karlin.mff.cuni.cz), 1998-1999
- *
- * dcache operations
- */
-
-#include "hpfs_fn.h"
-
-/*
- * Note: the dentry argument is the parent dentry.
- */
-
-static int hpfs_hash_dentry(const struct dentry *dentry, struct qstr *qstr)
-{
- unsigned long hash;
- int i;
- unsigned l = qstr->len;
-
- if (l == 1) if (qstr->name[0]=='.') goto x;
- if (l == 2) if (qstr->name[0]=='.' || qstr->name[1]=='.') goto x;
- hpfs_adjust_length(qstr->name, &l);
- /*if (hpfs_chk_name(qstr->name,&l))*/
- /*return -ENAMETOOLONG;*/
- /*return -ENOENT;*/
- x:
-
- hash = init_name_hash(dentry);
- for (i = 0; i < l; i++)
- hash = partial_name_hash(hpfs_upcase(hpfs_sb(dentry->d_sb)->sb_cp_table,qstr->name[i]), hash);
- qstr->hash = end_name_hash(hash);
-
- return 0;
-}
-
-static int hpfs_compare_dentry(const struct dentry *dentry,
- unsigned int len, const char *str, const struct qstr *name)
-{
- unsigned al = len;
- unsigned bl = name->len;
-
- hpfs_adjust_length(str, &al);
- /*hpfs_adjust_length(b->name, &bl);*/
-
- /*
- * 'str' is the nane of an already existing dentry, so the name
- * must be valid. 'name' must be validated first.
- */
-
- if (hpfs_chk_name(name->name, &bl))
- return 1;
- if (hpfs_compare_names(dentry->d_sb, str, al, name->name, bl, 0))
- return 1;
- return 0;
-}
-
-const struct dentry_operations hpfs_dentry_operations = {
- .d_hash = hpfs_hash_dentry,
- .d_compare = hpfs_compare_dentry,
-};
diff --git a/fs/hpfs/dir.c b/fs/hpfs/dir.c
deleted file mode 100644
index 3bf11202e2d3..000000000000
--- a/fs/hpfs/dir.c
+++ /dev/null
@@ -1,331 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * linux/fs/hpfs/dir.c
- *
- * Mikulas Patocka (mikulas@artax.karlin.mff.cuni.cz), 1998-1999
- *
- * directory VFS functions
- */
-
-#include <linux/slab.h>
-#include "hpfs_fn.h"
-
-static int hpfs_dir_release(struct inode *inode, struct file *filp)
-{
- hpfs_lock(inode->i_sb);
- hpfs_del_pos(inode, &filp->f_pos);
- /*hpfs_write_if_changed(inode);*/
- hpfs_unlock(inode->i_sb);
- return 0;
-}
-
-/* This is slow, but it's not used often */
-
-static loff_t hpfs_dir_lseek(struct file *filp, loff_t off, int whence)
-{
- loff_t new_off = off + (whence == 1 ? filp->f_pos : 0);
- loff_t pos;
- struct quad_buffer_head qbh;
- struct inode *i = file_inode(filp);
- struct hpfs_inode_info *hpfs_inode = hpfs_i(i);
- struct super_block *s = i->i_sb;
-
- /* Somebody else will have to figure out what to do here */
- if (whence == SEEK_DATA || whence == SEEK_HOLE)
- return -EINVAL;
-
- inode_lock(i);
- hpfs_lock(s);
-
- /*pr_info("dir lseek\n");*/
- if (new_off == 0 || new_off == 1 || new_off == 11 || new_off == 12 || new_off == 13) goto ok;
- pos = ((loff_t) hpfs_de_as_down_as_possible(s, hpfs_inode->i_dno) << 4) + 1;
- while (pos != new_off) {
- if (map_pos_dirent(i, &pos, &qbh)) hpfs_brelse4(&qbh);
- else goto fail;
- if (pos == 12) goto fail;
- }
- if (unlikely(hpfs_add_pos(i, &filp->f_pos) < 0)) {
- hpfs_unlock(s);
- inode_unlock(i);
- return -ENOMEM;
- }
-ok:
- filp->f_pos = new_off;
- hpfs_unlock(s);
- inode_unlock(i);
- return new_off;
-fail:
- /*pr_warn("illegal lseek: %016llx\n", new_off);*/
- hpfs_unlock(s);
- inode_unlock(i);
- return -ESPIPE;
-}
-
-static int hpfs_readdir(struct file *file, struct dir_context *ctx)
-{
- struct inode *inode = file_inode(file);
- struct hpfs_inode_info *hpfs_inode = hpfs_i(inode);
- struct quad_buffer_head qbh;
- struct hpfs_dirent *de;
- int lc;
- loff_t next_pos;
- unsigned char *tempname;
- int c1, c2 = 0;
- int ret = 0;
-
- hpfs_lock(inode->i_sb);
-
- if (hpfs_sb(inode->i_sb)->sb_chk) {
- if (hpfs_chk_sectors(inode->i_sb, inode->i_ino, 1, "dir_fnode")) {
- ret = -EFSERROR;
- goto out;
- }
- if (hpfs_chk_sectors(inode->i_sb, hpfs_inode->i_dno, 4, "dir_dnode")) {
- ret = -EFSERROR;
- goto out;
- }
- }
- if (hpfs_sb(inode->i_sb)->sb_chk >= 2) {
- struct buffer_head *bh;
- struct fnode *fno;
- int e = 0;
- if (!(fno = hpfs_map_fnode(inode->i_sb, inode->i_ino, &bh))) {
- ret = -EIOERROR;
- goto out;
- }
- if (!fnode_is_dir(fno)) {
- e = 1;
- hpfs_error(inode->i_sb, "not a directory, fnode %08llx",
- inode->i_ino);
- }
- if (hpfs_inode->i_dno != le32_to_cpu(fno->u.external[0].disk_secno)) {
- e = 1;
- hpfs_error(inode->i_sb, "corrupted inode: i_dno == %08x, fnode -> dnode == %08x", hpfs_inode->i_dno, le32_to_cpu(fno->u.external[0].disk_secno));
- }
- brelse(bh);
- if (e) {
- ret = -EFSERROR;
- goto out;
- }
- }
- lc = hpfs_sb(inode->i_sb)->sb_lowercase;
- if (ctx->pos == 12) { /* diff -r requires this (note, that diff -r */
- ctx->pos = 13; /* also fails on msdos filesystem in 2.0) */
- goto out;
- }
- if (ctx->pos == 13) {
- ret = -ENOENT;
- goto out;
- }
-
- while (1) {
- again:
- /* This won't work when cycle is longer than number of dirents
- accepted by filldir, but what can I do?
- maybe killall -9 ls helps */
- if (hpfs_sb(inode->i_sb)->sb_chk)
- if (hpfs_stop_cycles(inode->i_sb, ctx->pos, &c1, &c2, "hpfs_readdir")) {
- ret = -EFSERROR;
- goto out;
- }
- if (ctx->pos == 12)
- goto out;
- if (ctx->pos == 3 || ctx->pos == 4 || ctx->pos == 5) {
- pr_err("pos==%d\n", (int)ctx->pos);
- goto out;
- }
- if (ctx->pos == 0) {
- if (!dir_emit_dot(file, ctx))
- goto out;
- ctx->pos = 11;
- }
- if (ctx->pos == 11) {
- if (!dir_emit(ctx, "..", 2, hpfs_inode->i_parent_dir, DT_DIR))
- goto out;
- ctx->pos = 1;
- }
- if (ctx->pos == 1) {
- ret = hpfs_add_pos(inode, &file->f_pos);
- if (unlikely(ret < 0))
- goto out;
- ctx->pos = ((loff_t) hpfs_de_as_down_as_possible(inode->i_sb, hpfs_inode->i_dno) << 4) + 1;
- }
- next_pos = ctx->pos;
- if (!(de = map_pos_dirent(inode, &next_pos, &qbh))) {
- ctx->pos = next_pos;
- ret = -EIOERROR;
- goto out;
- }
- if (de->first || de->last) {
- if (hpfs_sb(inode->i_sb)->sb_chk) {
- if (de->first && !de->last && (de->namelen != 2
- || de ->name[0] != 1 || de->name[1] != 1))
- hpfs_error(inode->i_sb, "hpfs_readdir: bad ^A^A entry; pos = %08lx", (unsigned long)ctx->pos);
- if (de->last && (de->namelen != 1 || de ->name[0] != 255))
- hpfs_error(inode->i_sb, "hpfs_readdir: bad \\377 entry; pos = %08lx", (unsigned long)ctx->pos);
- }
- hpfs_brelse4(&qbh);
- ctx->pos = next_pos;
- goto again;
- }
- tempname = hpfs_translate_name(inode->i_sb, de->name, de->namelen, lc, de->not_8x3);
- if (!dir_emit(ctx, tempname, de->namelen, le32_to_cpu(de->fnode), DT_UNKNOWN)) {
- if (tempname != de->name) kfree(tempname);
- hpfs_brelse4(&qbh);
- goto out;
- }
- ctx->pos = next_pos;
- if (tempname != de->name) kfree(tempname);
- hpfs_brelse4(&qbh);
- }
-out:
- hpfs_unlock(inode->i_sb);
- return ret;
-}
-
-/*
- * lookup. Search the specified directory for the specified name, set
- * *result to the corresponding inode.
- *
- * lookup uses the inode number to tell read_inode whether it is reading
- * the inode of a directory or a file -- file ino's are odd, directory
- * ino's are even. read_inode avoids i/o for file inodes; everything
- * needed is up here in the directory. (And file fnodes are out in
- * the boondocks.)
- *
- * - M.P.: this is over, sometimes we've got to read file's fnode for eas
- * inode numbers are just fnode sector numbers; iget lock is used
- * to tell read_inode to read fnode or not.
- */
-
-struct dentry *hpfs_lookup(struct inode *dir, struct dentry *dentry, unsigned int flags)
-{
- const unsigned char *name = dentry->d_name.name;
- unsigned len = dentry->d_name.len;
- struct quad_buffer_head qbh;
- struct hpfs_dirent *de;
- ino_t ino;
- int err;
- struct inode *result = NULL;
- struct hpfs_inode_info *hpfs_result;
-
- hpfs_lock(dir->i_sb);
- if ((err = hpfs_chk_name(name, &len))) {
- if (err == -ENAMETOOLONG) {
- hpfs_unlock(dir->i_sb);
- return ERR_PTR(-ENAMETOOLONG);
- }
- goto end_add;
- }
-
- /*
- * '.' and '..' will never be passed here.
- */
-
- de = map_dirent(dir, hpfs_i(dir)->i_dno, name, len, NULL, &qbh);
-
- /*
- * This is not really a bailout, just means file not found.
- */
-
- if (!de) goto end;
-
- /*
- * Get inode number, what we're after.
- */
-
- ino = le32_to_cpu(de->fnode);
-
- /*
- * Go find or make an inode.
- */
-
- result = iget_locked(dir->i_sb, ino);
- if (!result) {
- hpfs_error(dir->i_sb, "hpfs_lookup: can't get inode");
- result = ERR_PTR(-ENOMEM);
- goto bail1;
- }
- if (inode_state_read_once(result) & I_NEW) {
- hpfs_init_inode(result);
- if (de->directory)
- hpfs_read_inode(result);
- else if (le32_to_cpu(de->ea_size) && hpfs_sb(dir->i_sb)->sb_eas)
- hpfs_read_inode(result);
- else {
- result->i_mode |= S_IFREG;
- result->i_mode &= ~0111;
- result->i_op = &hpfs_file_iops;
- result->i_fop = &hpfs_file_ops;
- set_nlink(result, 1);
- }
- unlock_new_inode(result);
- }
- hpfs_result = hpfs_i(result);
- if (!de->directory) hpfs_result->i_parent_dir = dir->i_ino;
-
- if (de->has_acl || de->has_xtd_perm) if (!sb_rdonly(dir->i_sb)) {
- hpfs_error(result->i_sb, "ACLs or XPERM found. This is probably HPFS386. This driver doesn't support it now. Send me some info on these structures");
- iput(result);
- result = ERR_PTR(-EINVAL);
- goto bail1;
- }
-
- /*
- * Fill in the info from the directory if this is a newly created
- * inode.
- */
-
- if (!inode_get_ctime_sec(result)) {
- time64_t csec = local_to_gmt(dir->i_sb, le32_to_cpu(de->creation_date));
-
- inode_set_ctime(result, csec ? csec : 1, 0);
- inode_set_mtime(result,
- local_to_gmt(dir->i_sb, le32_to_cpu(de->write_date)),
- 0);
- inode_set_atime(result,
- local_to_gmt(dir->i_sb, le32_to_cpu(de->read_date)),
- 0);
- hpfs_result->i_ea_size = le32_to_cpu(de->ea_size);
- if (!hpfs_result->i_ea_mode && de->read_only)
- result->i_mode &= ~0222;
- if (!de->directory) {
- if (result->i_size == -1) {
- result->i_size = le32_to_cpu(de->file_size);
- result->i_data.a_ops = &hpfs_aops;
- hpfs_i(result)->mmu_private = result->i_size;
- /*
- * i_blocks should count the fnode and any anodes.
- * We count 1 for the fnode and don't bother about
- * anodes -- the disk heads are on the directory band
- * and we want them to stay there.
- */
- result->i_blocks = 1 + ((result->i_size + 511) >> 9);
- }
- }
- }
-
-bail1:
- hpfs_brelse4(&qbh);
-
- /*
- * Made it.
- */
-
-end:
-end_add:
- hpfs_unlock(dir->i_sb);
- return d_splice_alias(result, dentry);
-}
-
-const struct file_operations hpfs_dir_ops =
-{
- .llseek = hpfs_dir_lseek,
- .read = generic_read_dir,
- .iterate_shared = hpfs_readdir,
- .release = hpfs_dir_release,
- .fsync = hpfs_file_fsync,
- .unlocked_ioctl = hpfs_ioctl,
- .compat_ioctl = compat_ptr_ioctl,
-};
diff --git a/fs/hpfs/dnode.c b/fs/hpfs/dnode.c
deleted file mode 100644
index 8c6aa060fd87..000000000000
--- a/fs/hpfs/dnode.c
+++ /dev/null
@@ -1,1095 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * linux/fs/hpfs/dnode.c
- *
- * Mikulas Patocka (mikulas@artax.karlin.mff.cuni.cz), 1998-1999
- *
- * handling directory dnode tree - adding, deleteing & searching for dirents
- */
-
-#include "hpfs_fn.h"
-
-static loff_t get_pos(struct dnode *d, struct hpfs_dirent *fde)
-{
- struct hpfs_dirent *de;
- struct hpfs_dirent *de_end = dnode_end_de(d);
- int i = 1;
- for (de = dnode_first_de(d); de < de_end; de = de_next_de(de)) {
- if (de == fde) return ((loff_t) le32_to_cpu(d->self) << 4) | (loff_t)i;
- i++;
- }
- pr_info("%s(): not_found\n", __func__);
- return ((loff_t)le32_to_cpu(d->self) << 4) | (loff_t)1;
-}
-
-int hpfs_add_pos(struct inode *inode, loff_t *pos)
-{
- struct hpfs_inode_info *hpfs_inode = hpfs_i(inode);
- int i = 0;
- loff_t **ppos;
-
- if (hpfs_inode->i_rddir_off)
- for (; hpfs_inode->i_rddir_off[i]; i++)
- if (hpfs_inode->i_rddir_off[i] == pos)
- return 0;
- if (!(i&0x0f)) {
- ppos = kmalloc_objs(loff_t *, i + 0x11, GFP_NOFS);
- if (!ppos) {
- pr_err("out of memory for position list\n");
- return -ENOMEM;
- }
- if (hpfs_inode->i_rddir_off) {
- memcpy(ppos, hpfs_inode->i_rddir_off, i * sizeof(loff_t));
- kfree(hpfs_inode->i_rddir_off);
- }
- hpfs_inode->i_rddir_off = ppos;
- }
- hpfs_inode->i_rddir_off[i] = pos;
- hpfs_inode->i_rddir_off[i + 1] = NULL;
- return 0;
-}
-
-void hpfs_del_pos(struct inode *inode, loff_t *pos)
-{
- struct hpfs_inode_info *hpfs_inode = hpfs_i(inode);
- loff_t **i, **j;
-
- if (!hpfs_inode->i_rddir_off) goto not_f;
- for (i = hpfs_inode->i_rddir_off; *i; i++) if (*i == pos) goto fnd;
- goto not_f;
- fnd:
- for (j = i + 1; *j; j++) ;
- *i = *(j - 1);
- *(j - 1) = NULL;
- if (j - 1 == hpfs_inode->i_rddir_off) {
- kfree(hpfs_inode->i_rddir_off);
- hpfs_inode->i_rddir_off = NULL;
- }
- return;
- not_f:
- /*pr_warn("position pointer %p->%08x not found\n",
- pos, (int)*pos);*/
- return;
-}
-
-static void for_all_poss(struct inode *inode, void (*f)(loff_t *, loff_t, loff_t),
- loff_t p1, loff_t p2)
-{
- struct hpfs_inode_info *hpfs_inode = hpfs_i(inode);
- loff_t **i;
-
- if (!hpfs_inode->i_rddir_off) return;
- for (i = hpfs_inode->i_rddir_off; *i; i++) (*f)(*i, p1, p2);
- return;
-}
-
-static void hpfs_pos_subst(loff_t *p, loff_t f, loff_t t)
-{
- if (*p == f) *p = t;
-}
-
-/*void hpfs_hpfs_pos_substd(loff_t *p, loff_t f, loff_t t)
-{
- if ((*p & ~0x3f) == (f & ~0x3f)) *p = (t & ~0x3f) | (*p & 0x3f);
-}*/
-
-static void hpfs_pos_ins(loff_t *p, loff_t d, loff_t c)
-{
- if ((*p & ~0x3f) == (d & ~0x3f) && (*p & 0x3f) >= (d & 0x3f)) {
- int n = (*p & 0x3f) + c;
- if (n > 0x3f)
- pr_err("%s(): %08x + %d\n",
- __func__, (int)*p, (int)c >> 8);
- else
- *p = (*p & ~0x3f) | n;
- }
-}
-
-static void hpfs_pos_del(loff_t *p, loff_t d, loff_t c)
-{
- if ((*p & ~0x3f) == (d & ~0x3f) && (*p & 0x3f) >= (d & 0x3f)) {
- int n = (*p & 0x3f) - c;
- if (n < 1)
- pr_err("%s(): %08x - %d\n",
- __func__, (int)*p, (int)c >> 8);
- else
- *p = (*p & ~0x3f) | n;
- }
-}
-
-static struct hpfs_dirent *dnode_pre_last_de(struct dnode *d)
-{
- struct hpfs_dirent *de, *de_end, *dee = NULL, *deee = NULL;
- de_end = dnode_end_de(d);
- for (de = dnode_first_de(d); de < de_end; de = de_next_de(de)) {
- deee = dee; dee = de;
- }
- return deee;
-}
-
-static struct hpfs_dirent *dnode_last_de(struct dnode *d)
-{
- struct hpfs_dirent *de, *de_end, *dee = NULL;
- de_end = dnode_end_de(d);
- for (de = dnode_first_de(d); de < de_end; de = de_next_de(de)) {
- dee = de;
- }
- return dee;
-}
-
-static void set_last_pointer(struct super_block *s, struct dnode *d, dnode_secno ptr)
-{
- struct hpfs_dirent *de;
- if (!(de = dnode_last_de(d))) {
- hpfs_error(s, "set_last_pointer: empty dnode %08x", le32_to_cpu(d->self));
- return;
- }
- if (hpfs_sb(s)->sb_chk) {
- if (de->down) {
- hpfs_error(s, "set_last_pointer: dnode %08x has already last pointer %08x",
- le32_to_cpu(d->self), de_down_pointer(de));
- return;
- }
- if (le16_to_cpu(de->length) != 32) {
- hpfs_error(s, "set_last_pointer: bad last dirent in dnode %08x", le32_to_cpu(d->self));
- return;
- }
- }
- if (ptr) {
- le32_add_cpu(&d->first_free, 4);
- if (le32_to_cpu(d->first_free) > 2048) {
- hpfs_error(s, "set_last_pointer: too long dnode %08x", le32_to_cpu(d->self));
- le32_add_cpu(&d->first_free, -4);
- return;
- }
- de->length = cpu_to_le16(36);
- de->down = 1;
- *(__le32 *)((char *)de + 32) = cpu_to_le32(ptr);
- }
-}
-
-/* Add an entry to dnode and don't care if it grows over 2048 bytes */
-
-struct hpfs_dirent *hpfs_add_de(struct super_block *s, struct dnode *d,
- const unsigned char *name,
- unsigned namelen, secno down_ptr)
-{
- struct hpfs_dirent *de;
- struct hpfs_dirent *de_end = dnode_end_de(d);
- unsigned d_size = de_size(namelen, down_ptr);
- for (de = dnode_first_de(d); de < de_end; de = de_next_de(de)) {
- int c = hpfs_compare_names(s, name, namelen, de->name, de->namelen, de->last);
- if (!c) {
- hpfs_error(s, "name (%c,%d) already exists in dnode %08x", *name, namelen, le32_to_cpu(d->self));
- return NULL;
- }
- if (c < 0) break;
- }
- memmove((char *)de + d_size, de, (char *)de_end - (char *)de);
- memset(de, 0, d_size);
- if (down_ptr) {
- *(__le32 *)((char *)de + d_size - 4) = cpu_to_le32(down_ptr);
- de->down = 1;
- }
- de->length = cpu_to_le16(d_size);
- de->not_8x3 = hpfs_is_name_long(name, namelen);
- de->namelen = namelen;
- memcpy(de->name, name, namelen);
- le32_add_cpu(&d->first_free, d_size);
- return de;
-}
-
-/* Delete dirent and don't care about its subtree */
-
-static void hpfs_delete_de(struct super_block *s, struct dnode *d,
- struct hpfs_dirent *de)
-{
- if (de->last) {
- hpfs_error(s, "attempt to delete last dirent in dnode %08x", le32_to_cpu(d->self));
- return;
- }
- d->first_free = cpu_to_le32(le32_to_cpu(d->first_free) - le16_to_cpu(de->length));
- memmove(de, de_next_de(de), le32_to_cpu(d->first_free) + (char *)d - (char *)de);
-}
-
-static void fix_up_ptrs(struct super_block *s, struct dnode *d)
-{
- struct hpfs_dirent *de;
- struct hpfs_dirent *de_end = dnode_end_de(d);
- dnode_secno dno = le32_to_cpu(d->self);
- for (de = dnode_first_de(d); de < de_end; de = de_next_de(de))
- if (de->down) {
- struct quad_buffer_head qbh;
- struct dnode *dd;
- if ((dd = hpfs_map_dnode(s, de_down_pointer(de), &qbh))) {
- if (le32_to_cpu(dd->up) != dno || dd->root_dnode) {
- dd->up = cpu_to_le32(dno);
- dd->root_dnode = 0;
- hpfs_mark_4buffers_dirty(&qbh);
- }
- hpfs_brelse4(&qbh);
- }
- }
-}
-
-/* Add an entry to dnode and do dnode splitting if required */
-
-static int hpfs_add_to_dnode(struct inode *i, dnode_secno dno,
- const unsigned char *name, unsigned namelen,
- struct hpfs_dirent *new_de, dnode_secno down_ptr)
-{
- struct quad_buffer_head qbh, qbh1, qbh2;
- struct dnode *d, *ad, *rd, *nd = NULL;
- dnode_secno adno, rdno;
- struct hpfs_dirent *de;
- struct hpfs_dirent nde;
- unsigned char *nname;
- int h;
- int pos;
- struct buffer_head *bh;
- struct fnode *fnode;
- int c1, c2 = 0;
- if (!(nname = kmalloc(256, GFP_NOFS))) {
- pr_err("out of memory, can't add to dnode\n");
- return 1;
- }
- go_up:
- if (namelen >= 256) {
- hpfs_error(i->i_sb, "%s(): namelen == %d", __func__, namelen);
- kfree(nd);
- kfree(nname);
- return 1;
- }
- if (!(d = hpfs_map_dnode(i->i_sb, dno, &qbh))) {
- kfree(nd);
- kfree(nname);
- return 1;
- }
- go_up_a:
- if (hpfs_sb(i->i_sb)->sb_chk)
- if (hpfs_stop_cycles(i->i_sb, dno, &c1, &c2, "hpfs_add_to_dnode")) {
- hpfs_brelse4(&qbh);
- kfree(nd);
- kfree(nname);
- return 1;
- }
- if (le32_to_cpu(d->first_free) + de_size(namelen, down_ptr) <= 2048) {
- loff_t t;
- copy_de(de=hpfs_add_de(i->i_sb, d, name, namelen, down_ptr), new_de);
- t = get_pos(d, de);
- for_all_poss(i, hpfs_pos_ins, t, 1);
- for_all_poss(i, hpfs_pos_subst, 4, t);
- for_all_poss(i, hpfs_pos_subst, 5, t + 1);
- hpfs_mark_4buffers_dirty(&qbh);
- hpfs_brelse4(&qbh);
- kfree(nd);
- kfree(nname);
- return 0;
- }
- if (!nd) if (!(nd = kmalloc(0x924, GFP_NOFS))) {
- /* 0x924 is a max size of dnode after adding a dirent with
- max name length. We alloc this only once. There must
- not be any error while splitting dnodes, otherwise the
- whole directory, not only file we're adding, would
- be lost. */
- pr_err("out of memory for dnode splitting\n");
- hpfs_brelse4(&qbh);
- kfree(nname);
- return 1;
- }
- memcpy(nd, d, le32_to_cpu(d->first_free));
- copy_de(de = hpfs_add_de(i->i_sb, nd, name, namelen, down_ptr), new_de);
- for_all_poss(i, hpfs_pos_ins, get_pos(nd, de), 1);
- h = ((char *)dnode_last_de(nd) - (char *)nd) / 2 + 10;
- if (!(ad = hpfs_alloc_dnode(i->i_sb, le32_to_cpu(d->up), &adno, &qbh1))) {
- hpfs_error(i->i_sb, "unable to alloc dnode - dnode tree will be corrupted");
- hpfs_brelse4(&qbh);
- kfree(nd);
- kfree(nname);
- return 1;
- }
- i->i_size += 2048;
- i->i_blocks += 4;
- pos = 1;
- for (de = dnode_first_de(nd); (char *)de_next_de(de) - (char *)nd < h; de = de_next_de(de)) {
- copy_de(hpfs_add_de(i->i_sb, ad, de->name, de->namelen, de->down ? de_down_pointer(de) : 0), de);
- for_all_poss(i, hpfs_pos_subst, ((loff_t)dno << 4) | pos, ((loff_t)adno << 4) | pos);
- pos++;
- }
- copy_de(new_de = &nde, de);
- memcpy(nname, de->name, de->namelen);
- name = nname;
- namelen = de->namelen;
- for_all_poss(i, hpfs_pos_subst, ((loff_t)dno << 4) | pos, 4);
- down_ptr = adno;
- set_last_pointer(i->i_sb, ad, de->down ? de_down_pointer(de) : 0);
- de = de_next_de(de);
- memmove((char *)nd + 20, de, le32_to_cpu(nd->first_free) + (char *)nd - (char *)de);
- le32_add_cpu(&nd->first_free, -((char *)de - (char *)nd - 20));
- memcpy(d, nd, le32_to_cpu(nd->first_free));
- for_all_poss(i, hpfs_pos_del, (loff_t)dno << 4, pos);
- fix_up_ptrs(i->i_sb, ad);
- if (!d->root_dnode) {
- ad->up = d->up;
- dno = le32_to_cpu(ad->up);
- hpfs_mark_4buffers_dirty(&qbh);
- hpfs_brelse4(&qbh);
- hpfs_mark_4buffers_dirty(&qbh1);
- hpfs_brelse4(&qbh1);
- goto go_up;
- }
- if (!(rd = hpfs_alloc_dnode(i->i_sb, le32_to_cpu(d->up), &rdno, &qbh2))) {
- hpfs_error(i->i_sb, "unable to alloc dnode - dnode tree will be corrupted");
- hpfs_brelse4(&qbh);
- hpfs_brelse4(&qbh1);
- kfree(nd);
- kfree(nname);
- return 1;
- }
- i->i_size += 2048;
- i->i_blocks += 4;
- rd->root_dnode = 1;
- rd->up = d->up;
- if (!(fnode = hpfs_map_fnode(i->i_sb, le32_to_cpu(d->up), &bh))) {
- hpfs_free_dnode(i->i_sb, rdno);
- hpfs_brelse4(&qbh);
- hpfs_brelse4(&qbh1);
- hpfs_brelse4(&qbh2);
- kfree(nd);
- kfree(nname);
- return 1;
- }
- fnode->u.external[0].disk_secno = cpu_to_le32(rdno);
- mark_buffer_dirty(bh);
- brelse(bh);
- hpfs_i(i)->i_dno = rdno;
- d->up = ad->up = cpu_to_le32(rdno);
- d->root_dnode = ad->root_dnode = 0;
- hpfs_mark_4buffers_dirty(&qbh);
- hpfs_brelse4(&qbh);
- hpfs_mark_4buffers_dirty(&qbh1);
- hpfs_brelse4(&qbh1);
- qbh = qbh2;
- set_last_pointer(i->i_sb, rd, dno);
- dno = rdno;
- d = rd;
- goto go_up_a;
-}
-
-/*
- * Add an entry to directory btree.
- * I hate such crazy directory structure.
- * It's easy to read but terrible to write.
- * I wrote this directory code 4 times.
- * I hope, now it's finally bug-free.
- */
-
-int hpfs_add_dirent(struct inode *i,
- const unsigned char *name, unsigned namelen,
- struct hpfs_dirent *new_de)
-{
- struct hpfs_inode_info *hpfs_inode = hpfs_i(i);
- struct dnode *d;
- struct hpfs_dirent *de, *de_end;
- struct quad_buffer_head qbh;
- dnode_secno dno;
- int c;
- int c1, c2 = 0;
- dno = hpfs_inode->i_dno;
- down:
- if (hpfs_sb(i->i_sb)->sb_chk)
- if (hpfs_stop_cycles(i->i_sb, dno, &c1, &c2, "hpfs_add_dirent")) return 1;
- if (!(d = hpfs_map_dnode(i->i_sb, dno, &qbh))) return 1;
- de_end = dnode_end_de(d);
- for (de = dnode_first_de(d); de < de_end; de = de_next_de(de)) {
- if (!(c = hpfs_compare_names(i->i_sb, name, namelen, de->name, de->namelen, de->last))) {
- hpfs_brelse4(&qbh);
- return -1;
- }
- if (c < 0) {
- if (de->down) {
- dno = de_down_pointer(de);
- hpfs_brelse4(&qbh);
- goto down;
- }
- break;
- }
- }
- hpfs_brelse4(&qbh);
- if (hpfs_check_free_dnodes(i->i_sb, FREE_DNODES_ADD)) {
- c = 1;
- goto ret;
- }
- c = hpfs_add_to_dnode(i, dno, name, namelen, new_de, 0);
- ret:
- return c;
-}
-
-/*
- * Find dirent with higher name in 'from' subtree and move it to 'to' dnode.
- * Return the dnode we moved from (to be checked later if it's empty)
- */
-
-static secno move_to_top(struct inode *i, dnode_secno from, dnode_secno to)
-{
- dnode_secno dno, ddno;
- dnode_secno chk_up = to;
- struct dnode *dnode;
- struct quad_buffer_head qbh;
- struct hpfs_dirent *de, *nde;
- int a;
- loff_t t;
- int c1, c2 = 0;
- dno = from;
- while (1) {
- if (hpfs_sb(i->i_sb)->sb_chk)
- if (hpfs_stop_cycles(i->i_sb, dno, &c1, &c2, "move_to_top"))
- return 0;
- if (!(dnode = hpfs_map_dnode(i->i_sb, dno, &qbh))) return 0;
- if (hpfs_sb(i->i_sb)->sb_chk) {
- if (le32_to_cpu(dnode->up) != chk_up) {
- hpfs_error(i->i_sb, "move_to_top: up pointer from %08x should be %08x, is %08x",
- dno, chk_up, le32_to_cpu(dnode->up));
- hpfs_brelse4(&qbh);
- return 0;
- }
- chk_up = dno;
- }
- if (!(de = dnode_last_de(dnode))) {
- hpfs_error(i->i_sb, "move_to_top: dnode %08x has no last de", dno);
- hpfs_brelse4(&qbh);
- return 0;
- }
- if (!de->down) break;
- dno = de_down_pointer(de);
- hpfs_brelse4(&qbh);
- }
- while (!(de = dnode_pre_last_de(dnode))) {
- dnode_secno up = le32_to_cpu(dnode->up);
- hpfs_brelse4(&qbh);
- hpfs_free_dnode(i->i_sb, dno);
- i->i_size -= 2048;
- i->i_blocks -= 4;
- for_all_poss(i, hpfs_pos_subst, ((loff_t)dno << 4) | 1, 5);
- if (up == to) return to;
- if (!(dnode = hpfs_map_dnode(i->i_sb, up, &qbh))) return 0;
- if (dnode->root_dnode) {
- hpfs_error(i->i_sb, "move_to_top: got to root_dnode while moving from %08x to %08x", from, to);
- hpfs_brelse4(&qbh);
- return 0;
- }
- de = dnode_last_de(dnode);
- if (!de || !de->down) {
- hpfs_error(i->i_sb, "move_to_top: dnode %08x doesn't point down to %08x", up, dno);
- hpfs_brelse4(&qbh);
- return 0;
- }
- le32_add_cpu(&dnode->first_free, -4);
- le16_add_cpu(&de->length, -4);
- de->down = 0;
- hpfs_mark_4buffers_dirty(&qbh);
- dno = up;
- }
- t = get_pos(dnode, de);
- for_all_poss(i, hpfs_pos_subst, t, 4);
- for_all_poss(i, hpfs_pos_subst, t + 1, 5);
- if (!(nde = kmalloc(le16_to_cpu(de->length), GFP_NOFS))) {
- hpfs_error(i->i_sb, "out of memory for dirent - directory will be corrupted");
- hpfs_brelse4(&qbh);
- return 0;
- }
- memcpy(nde, de, le16_to_cpu(de->length));
- ddno = de->down ? de_down_pointer(de) : 0;
- hpfs_delete_de(i->i_sb, dnode, de);
- set_last_pointer(i->i_sb, dnode, ddno);
- hpfs_mark_4buffers_dirty(&qbh);
- hpfs_brelse4(&qbh);
- a = hpfs_add_to_dnode(i, to, nde->name, nde->namelen, nde, from);
- kfree(nde);
- if (a) return 0;
- return dno;
-}
-
-/*
- * Check if a dnode is empty and delete it from the tree
- * (chkdsk doesn't like empty dnodes)
- */
-
-static void delete_empty_dnode(struct inode *i, dnode_secno dno)
-{
- struct hpfs_inode_info *hpfs_inode = hpfs_i(i);
- struct quad_buffer_head qbh;
- struct dnode *dnode;
- dnode_secno down, up, ndown;
- int p;
- struct hpfs_dirent *de;
- int c1, c2 = 0;
- try_it_again:
- if (hpfs_stop_cycles(i->i_sb, dno, &c1, &c2, "delete_empty_dnode")) return;
- if (!(dnode = hpfs_map_dnode(i->i_sb, dno, &qbh))) return;
- if (le32_to_cpu(dnode->first_free) > 56) goto end;
- if (le32_to_cpu(dnode->first_free) == 52 || le32_to_cpu(dnode->first_free) == 56) {
- struct hpfs_dirent *de_end;
- int root = dnode->root_dnode;
- up = le32_to_cpu(dnode->up);
- de = dnode_first_de(dnode);
- down = de->down ? de_down_pointer(de) : 0;
- if (hpfs_sb(i->i_sb)->sb_chk) if (root && !down) {
- hpfs_error(i->i_sb, "delete_empty_dnode: root dnode %08x is empty", dno);
- goto end;
- }
- hpfs_brelse4(&qbh);
- hpfs_free_dnode(i->i_sb, dno);
- i->i_size -= 2048;
- i->i_blocks -= 4;
- if (root) {
- struct fnode *fnode;
- struct buffer_head *bh;
- struct dnode *d1;
- struct quad_buffer_head qbh1;
- if (hpfs_sb(i->i_sb)->sb_chk)
- if (up != i->i_ino) {
- hpfs_error(i->i_sb,
- "bad pointer to fnode, dnode %08x, pointing to %08x, should be %08llx",
- dno, up,
- i->i_ino);
- return;
- }
- if ((d1 = hpfs_map_dnode(i->i_sb, down, &qbh1))) {
- d1->up = cpu_to_le32(up);
- d1->root_dnode = 1;
- hpfs_mark_4buffers_dirty(&qbh1);
- hpfs_brelse4(&qbh1);
- }
- if ((fnode = hpfs_map_fnode(i->i_sb, up, &bh))) {
- fnode->u.external[0].disk_secno = cpu_to_le32(down);
- mark_buffer_dirty(bh);
- brelse(bh);
- }
- hpfs_inode->i_dno = down;
- for_all_poss(i, hpfs_pos_subst, ((loff_t)dno << 4) | 1, (loff_t) 12);
- return;
- }
- if (!(dnode = hpfs_map_dnode(i->i_sb, up, &qbh))) return;
- p = 1;
- de_end = dnode_end_de(dnode);
- for (de = dnode_first_de(dnode); de < de_end; de = de_next_de(de), p++)
- if (de->down) if (de_down_pointer(de) == dno) goto fnd;
- hpfs_error(i->i_sb, "delete_empty_dnode: pointer to dnode %08x not found in dnode %08x", dno, up);
- goto end;
- fnd:
- for_all_poss(i, hpfs_pos_subst, ((loff_t)dno << 4) | 1, ((loff_t)up << 4) | p);
- if (!down) {
- de->down = 0;
- le16_add_cpu(&de->length, -4);
- le32_add_cpu(&dnode->first_free, -4);
- memmove(de_next_de(de), (char *)de_next_de(de) + 4,
- (char *)dnode + le32_to_cpu(dnode->first_free) - (char *)de_next_de(de));
- } else {
- struct dnode *d1;
- struct quad_buffer_head qbh1;
- *(dnode_secno *) ((void *) de + le16_to_cpu(de->length) - 4) = down;
- if ((d1 = hpfs_map_dnode(i->i_sb, down, &qbh1))) {
- d1->up = cpu_to_le32(up);
- hpfs_mark_4buffers_dirty(&qbh1);
- hpfs_brelse4(&qbh1);
- }
- }
- } else {
- hpfs_error(i->i_sb, "delete_empty_dnode: dnode %08x, first_free == %03x", dno, le32_to_cpu(dnode->first_free));
- goto end;
- }
-
- if (!de->last) {
- struct hpfs_dirent *de_next = de_next_de(de);
- struct hpfs_dirent *de_cp;
- struct dnode *d1;
- struct quad_buffer_head qbh1;
- if (!de_next->down) goto endm;
- ndown = de_down_pointer(de_next);
- if (!(de_cp = kmalloc(le16_to_cpu(de->length), GFP_NOFS))) {
- pr_err("out of memory for dtree balancing\n");
- goto endm;
- }
- memcpy(de_cp, de, le16_to_cpu(de->length));
- hpfs_delete_de(i->i_sb, dnode, de);
- hpfs_mark_4buffers_dirty(&qbh);
- hpfs_brelse4(&qbh);
- for_all_poss(i, hpfs_pos_subst, ((loff_t)up << 4) | p, 4);
- for_all_poss(i, hpfs_pos_del, ((loff_t)up << 4) | p, 1);
- if (de_cp->down) if ((d1 = hpfs_map_dnode(i->i_sb, de_down_pointer(de_cp), &qbh1))) {
- d1->up = cpu_to_le32(ndown);
- hpfs_mark_4buffers_dirty(&qbh1);
- hpfs_brelse4(&qbh1);
- }
- hpfs_add_to_dnode(i, ndown, de_cp->name, de_cp->namelen, de_cp, de_cp->down ? de_down_pointer(de_cp) : 0);
- /*pr_info("UP-TO-DNODE: %08x (ndown = %08x, down = %08x, dno = %08x)\n",
- up, ndown, down, dno);*/
- dno = up;
- kfree(de_cp);
- goto try_it_again;
- } else {
- struct hpfs_dirent *de_prev = dnode_pre_last_de(dnode);
- struct hpfs_dirent *de_cp;
- struct dnode *d1;
- struct quad_buffer_head qbh1;
- dnode_secno dlp;
- if (!de_prev) {
- hpfs_error(i->i_sb, "delete_empty_dnode: empty dnode %08x", up);
- hpfs_mark_4buffers_dirty(&qbh);
- hpfs_brelse4(&qbh);
- dno = up;
- goto try_it_again;
- }
- if (!de_prev->down) goto endm;
- ndown = de_down_pointer(de_prev);
- if ((d1 = hpfs_map_dnode(i->i_sb, ndown, &qbh1))) {
- struct hpfs_dirent *del = dnode_last_de(d1);
- dlp = del->down ? de_down_pointer(del) : 0;
- if (!dlp && down) {
- if (le32_to_cpu(d1->first_free) > 2044) {
- if (hpfs_sb(i->i_sb)->sb_chk >= 2) {
- pr_err("unbalanced dnode tree, see hpfs.txt 4 more info\n");
- pr_err("terminating balancing operation\n");
- }
- hpfs_brelse4(&qbh1);
- goto endm;
- }
- if (hpfs_sb(i->i_sb)->sb_chk >= 2) {
- pr_err("unbalanced dnode tree, see hpfs.txt 4 more info\n");
- pr_err("goin'on\n");
- }
- le16_add_cpu(&del->length, 4);
- del->down = 1;
- le32_add_cpu(&d1->first_free, 4);
- }
- if (dlp && !down) {
- le16_add_cpu(&del->length, -4);
- del->down = 0;
- le32_add_cpu(&d1->first_free, -4);
- } else if (down)
- *(__le32 *) ((void *) del + le16_to_cpu(del->length) - 4) = cpu_to_le32(down);
- } else goto endm;
- if (!(de_cp = kmalloc(le16_to_cpu(de_prev->length), GFP_NOFS))) {
- pr_err("out of memory for dtree balancing\n");
- hpfs_brelse4(&qbh1);
- goto endm;
- }
- hpfs_mark_4buffers_dirty(&qbh1);
- hpfs_brelse4(&qbh1);
- memcpy(de_cp, de_prev, le16_to_cpu(de_prev->length));
- hpfs_delete_de(i->i_sb, dnode, de_prev);
- if (!de_prev->down) {
- le16_add_cpu(&de_prev->length, 4);
- de_prev->down = 1;
- le32_add_cpu(&dnode->first_free, 4);
- }
- *(__le32 *) ((void *) de_prev + le16_to_cpu(de_prev->length) - 4) = cpu_to_le32(ndown);
- hpfs_mark_4buffers_dirty(&qbh);
- hpfs_brelse4(&qbh);
- for_all_poss(i, hpfs_pos_subst, ((loff_t)up << 4) | (p - 1), 4);
- for_all_poss(i, hpfs_pos_subst, ((loff_t)up << 4) | p, ((loff_t)up << 4) | (p - 1));
- if (down) if ((d1 = hpfs_map_dnode(i->i_sb, de_down_pointer(de), &qbh1))) {
- d1->up = cpu_to_le32(ndown);
- hpfs_mark_4buffers_dirty(&qbh1);
- hpfs_brelse4(&qbh1);
- }
- hpfs_add_to_dnode(i, ndown, de_cp->name, de_cp->namelen, de_cp, dlp);
- dno = up;
- kfree(de_cp);
- goto try_it_again;
- }
- endm:
- hpfs_mark_4buffers_dirty(&qbh);
- end:
- hpfs_brelse4(&qbh);
-}
-
-
-/* Delete dirent from directory */
-
-int hpfs_remove_dirent(struct inode *i, dnode_secno dno, struct hpfs_dirent *de,
- struct quad_buffer_head *qbh, int depth)
-{
- struct dnode *dnode = qbh->data;
- dnode_secno down = 0;
- loff_t t;
- if (de->first || de->last) {
- hpfs_error(i->i_sb, "hpfs_remove_dirent: attempt to delete first or last dirent in dnode %08x", dno);
- hpfs_brelse4(qbh);
- return 1;
- }
- if (de->down) down = de_down_pointer(de);
- if (depth && (de->down || (de == dnode_first_de(dnode) && de_next_de(de)->last))) {
- if (hpfs_check_free_dnodes(i->i_sb, FREE_DNODES_DEL)) {
- hpfs_brelse4(qbh);
- return 2;
- }
- }
- for_all_poss(i, hpfs_pos_del, (t = get_pos(dnode, de)) + 1, 1);
- hpfs_delete_de(i->i_sb, dnode, de);
- hpfs_mark_4buffers_dirty(qbh);
- hpfs_brelse4(qbh);
- if (down) {
- dnode_secno a = move_to_top(i, down, dno);
- for_all_poss(i, hpfs_pos_subst, 5, t);
- if (a) delete_empty_dnode(i, a);
- return !a;
- }
- delete_empty_dnode(i, dno);
- return 0;
-}
-
-void hpfs_count_dnodes(struct super_block *s, dnode_secno dno, int *n_dnodes,
- int *n_subdirs, int *n_items)
-{
- struct dnode *dnode;
- struct quad_buffer_head qbh;
- struct hpfs_dirent *de;
- dnode_secno ptr, odno = 0;
- int c1, c2 = 0;
- int d1, d2 = 0;
- go_down:
- if (n_dnodes) (*n_dnodes)++;
- if (hpfs_sb(s)->sb_chk)
- if (hpfs_stop_cycles(s, dno, &c1, &c2, "hpfs_count_dnodes #1")) return;
- ptr = 0;
- go_up:
- if (!(dnode = hpfs_map_dnode(s, dno, &qbh))) return;
- if (hpfs_sb(s)->sb_chk) if (odno && odno != -1 && le32_to_cpu(dnode->up) != odno)
- hpfs_error(s, "hpfs_count_dnodes: bad up pointer; dnode %08x, down %08x points to %08x", odno, dno, le32_to_cpu(dnode->up));
- de = dnode_first_de(dnode);
- if (ptr) while(1) {
- if (de->down) if (de_down_pointer(de) == ptr) goto process_de;
- if (de->last) {
- hpfs_brelse4(&qbh);
- hpfs_error(s, "hpfs_count_dnodes: pointer to dnode %08x not found in dnode %08x, got here from %08x",
- ptr, dno, odno);
- return;
- }
- de = de_next_de(de);
- }
- next_de:
- if (de->down) {
- odno = dno;
- dno = de_down_pointer(de);
- hpfs_brelse4(&qbh);
- goto go_down;
- }
- process_de:
- if (!de->first && !de->last && de->directory && n_subdirs) (*n_subdirs)++;
- if (!de->first && !de->last && n_items) (*n_items)++;
- if ((de = de_next_de(de)) < dnode_end_de(dnode)) goto next_de;
- ptr = dno;
- dno = le32_to_cpu(dnode->up);
- if (dnode->root_dnode) {
- hpfs_brelse4(&qbh);
- return;
- }
- hpfs_brelse4(&qbh);
- if (hpfs_sb(s)->sb_chk)
- if (hpfs_stop_cycles(s, ptr, &d1, &d2, "hpfs_count_dnodes #2")) return;
- odno = -1;
- goto go_up;
-}
-
-static struct hpfs_dirent *map_nth_dirent(struct super_block *s, dnode_secno dno, int n,
- struct quad_buffer_head *qbh, struct dnode **dn)
-{
- int i;
- struct hpfs_dirent *de, *de_end;
- struct dnode *dnode;
- dnode = hpfs_map_dnode(s, dno, qbh);
- if (!dnode) return NULL;
- if (dn) *dn=dnode;
- de = dnode_first_de(dnode);
- de_end = dnode_end_de(dnode);
- for (i = 1; de < de_end; i++, de = de_next_de(de)) {
- if (i == n) {
- return de;
- }
- if (de->last) break;
- }
- hpfs_brelse4(qbh);
- hpfs_error(s, "map_nth_dirent: n too high; dnode = %08x, requested %08x", dno, n);
- return NULL;
-}
-
-dnode_secno hpfs_de_as_down_as_possible(struct super_block *s, dnode_secno dno)
-{
- struct quad_buffer_head qbh;
- dnode_secno d = dno;
- dnode_secno up = 0;
- struct hpfs_dirent *de;
- int c1, c2 = 0;
-
- again:
- if (hpfs_sb(s)->sb_chk)
- if (hpfs_stop_cycles(s, d, &c1, &c2, "hpfs_de_as_down_as_possible"))
- return d;
- if (!(de = map_nth_dirent(s, d, 1, &qbh, NULL))) return dno;
- if (hpfs_sb(s)->sb_chk)
- if (up && le32_to_cpu(((struct dnode *)qbh.data)->up) != up)
- hpfs_error(s, "hpfs_de_as_down_as_possible: bad up pointer; dnode %08x, down %08x points to %08x", up, d, le32_to_cpu(((struct dnode *)qbh.data)->up));
- if (!de->down) {
- hpfs_brelse4(&qbh);
- return d;
- }
- up = d;
- d = de_down_pointer(de);
- hpfs_brelse4(&qbh);
- goto again;
-}
-
-struct hpfs_dirent *map_pos_dirent(struct inode *inode, loff_t *posp,
- struct quad_buffer_head *qbh)
-{
- loff_t pos;
- unsigned c;
- dnode_secno dno;
- struct hpfs_dirent *de, *d;
- struct hpfs_dirent *up_de;
- struct hpfs_dirent *end_up_de;
- struct dnode *dnode;
- struct dnode *up_dnode;
- struct quad_buffer_head qbh0;
-
- pos = *posp;
- dno = pos >> 6 << 2;
- pos &= 077;
- if (!(de = map_nth_dirent(inode->i_sb, dno, pos, qbh, &dnode)))
- goto bail;
-
- /* Going to the next dirent */
- if ((d = de_next_de(de)) < dnode_end_de(dnode)) {
- if (!(++*posp & 077)) {
- hpfs_error(inode->i_sb,
- "map_pos_dirent: pos crossed dnode boundary; pos = %08llx",
- (unsigned long long)*posp);
- goto bail;
- }
- /* We're going down the tree */
- if (d->down) {
- *posp = ((loff_t) hpfs_de_as_down_as_possible(inode->i_sb, de_down_pointer(d)) << 4) + 1;
- }
-
- return de;
- }
-
- /* Going up */
- if (dnode->root_dnode) goto bail;
-
- if (!(up_dnode = hpfs_map_dnode(inode->i_sb, le32_to_cpu(dnode->up), &qbh0)))
- goto bail;
-
- end_up_de = dnode_end_de(up_dnode);
- c = 0;
- for (up_de = dnode_first_de(up_dnode); up_de < end_up_de;
- up_de = de_next_de(up_de)) {
- if (!(++c & 077)) hpfs_error(inode->i_sb,
- "map_pos_dirent: pos crossed dnode boundary; dnode = %08x", le32_to_cpu(dnode->up));
- if (up_de->down && de_down_pointer(up_de) == dno) {
- *posp = ((loff_t) le32_to_cpu(dnode->up) << 4) + c;
- hpfs_brelse4(&qbh0);
- return de;
- }
- }
-
- hpfs_error(inode->i_sb, "map_pos_dirent: pointer to dnode %08x not found in parent dnode %08x",
- dno, le32_to_cpu(dnode->up));
- hpfs_brelse4(&qbh0);
-
- bail:
- *posp = 12;
- return de;
-}
-
-/* Find a dirent in tree */
-
-struct hpfs_dirent *map_dirent(struct inode *inode, dnode_secno dno,
- const unsigned char *name, unsigned len,
- dnode_secno *dd, struct quad_buffer_head *qbh)
-{
- struct dnode *dnode;
- struct hpfs_dirent *de;
- struct hpfs_dirent *de_end;
- int c1, c2 = 0;
-
- if (!S_ISDIR(inode->i_mode)) hpfs_error(inode->i_sb, "map_dirent: not a directory\n");
- again:
- if (hpfs_sb(inode->i_sb)->sb_chk)
- if (hpfs_stop_cycles(inode->i_sb, dno, &c1, &c2, "map_dirent")) return NULL;
- if (!(dnode = hpfs_map_dnode(inode->i_sb, dno, qbh))) return NULL;
-
- de_end = dnode_end_de(dnode);
- for (de = dnode_first_de(dnode); de < de_end; de = de_next_de(de)) {
- int t = hpfs_compare_names(inode->i_sb, name, len, de->name, de->namelen, de->last);
- if (!t) {
- if (dd) *dd = dno;
- return de;
- }
- if (t < 0) {
- if (de->down) {
- dno = de_down_pointer(de);
- hpfs_brelse4(qbh);
- goto again;
- }
- break;
- }
- }
- hpfs_brelse4(qbh);
- return NULL;
-}
-
-/*
- * Remove empty directory. In normal cases it is only one dnode with two
- * entries, but we must handle also such obscure cases when it's a tree
- * of empty dnodes.
- */
-
-void hpfs_remove_dtree(struct super_block *s, dnode_secno dno)
-{
- struct quad_buffer_head qbh;
- struct dnode *dnode;
- struct hpfs_dirent *de;
- dnode_secno d1, d2, rdno = dno;
- while (1) {
- if (!(dnode = hpfs_map_dnode(s, dno, &qbh))) return;
- de = dnode_first_de(dnode);
- if (de->last) {
- if (de->down) d1 = de_down_pointer(de);
- else goto error;
- hpfs_brelse4(&qbh);
- hpfs_free_dnode(s, dno);
- dno = d1;
- } else break;
- }
- if (!de->first) goto error;
- d1 = de->down ? de_down_pointer(de) : 0;
- de = de_next_de(de);
- if (!de->last) goto error;
- d2 = de->down ? de_down_pointer(de) : 0;
- hpfs_brelse4(&qbh);
- hpfs_free_dnode(s, dno);
- do {
- while (d1) {
- if (!(dnode = hpfs_map_dnode(s, dno = d1, &qbh))) return;
- de = dnode_first_de(dnode);
- if (!de->last) goto error;
- d1 = de->down ? de_down_pointer(de) : 0;
- hpfs_brelse4(&qbh);
- hpfs_free_dnode(s, dno);
- }
- d1 = d2;
- d2 = 0;
- } while (d1);
- return;
- error:
- hpfs_brelse4(&qbh);
- hpfs_free_dnode(s, dno);
- hpfs_error(s, "directory %08x is corrupted or not empty", rdno);
-}
-
-/*
- * Find dirent for specified fnode. Use truncated 15-char name in fnode as
- * a help for searching.
- */
-
-struct hpfs_dirent *map_fnode_dirent(struct super_block *s, fnode_secno fno,
- struct fnode *f, struct quad_buffer_head *qbh)
-{
- unsigned char *name1;
- unsigned char *name2;
- int name1len, name2len;
- struct dnode *d;
- dnode_secno dno, downd;
- struct fnode *upf;
- struct buffer_head *bh;
- struct hpfs_dirent *de, *de_end;
- int c;
- int c1, c2 = 0;
- int d1, d2 = 0;
- name1 = f->name;
- if (!(name2 = kmalloc(256, GFP_NOFS))) {
- pr_err("out of memory, can't map dirent\n");
- return NULL;
- }
- if (f->len <= 15)
- memcpy(name2, name1, name1len = name2len = f->len);
- else {
- memcpy(name2, name1, 15);
- memset(name2 + 15, 0xff, 256 - 15);
- /*name2[15] = 0xff;*/
- name1len = 15; name2len = 256;
- }
- if (!(upf = hpfs_map_fnode(s, le32_to_cpu(f->up), &bh))) {
- kfree(name2);
- return NULL;
- }
- if (!fnode_is_dir(upf)) {
- brelse(bh);
- hpfs_error(s, "fnode %08x has non-directory parent %08x", fno, le32_to_cpu(f->up));
- kfree(name2);
- return NULL;
- }
- dno = le32_to_cpu(upf->u.external[0].disk_secno);
- brelse(bh);
- go_down:
- downd = 0;
- go_up:
- if (!(d = hpfs_map_dnode(s, dno, qbh))) {
- kfree(name2);
- return NULL;
- }
- de_end = dnode_end_de(d);
- de = dnode_first_de(d);
- if (downd) {
- while (de < de_end) {
- if (de->down) if (de_down_pointer(de) == downd) goto f;
- de = de_next_de(de);
- }
- hpfs_error(s, "pointer to dnode %08x not found in dnode %08x", downd, dno);
- hpfs_brelse4(qbh);
- kfree(name2);
- return NULL;
- }
- next_de:
- if (le32_to_cpu(de->fnode) == fno) {
- kfree(name2);
- return de;
- }
- c = hpfs_compare_names(s, name1, name1len, de->name, de->namelen, de->last);
- if (c < 0 && de->down) {
- dno = de_down_pointer(de);
- hpfs_brelse4(qbh);
- if (hpfs_sb(s)->sb_chk)
- if (hpfs_stop_cycles(s, dno, &c1, &c2, "map_fnode_dirent #1")) {
- kfree(name2);
- return NULL;
- }
- goto go_down;
- }
- f:
- if (le32_to_cpu(de->fnode) == fno) {
- kfree(name2);
- return de;
- }
- c = hpfs_compare_names(s, name2, name2len, de->name, de->namelen, de->last);
- if (c < 0 && !de->last) goto not_found;
- if ((de = de_next_de(de)) < de_end) goto next_de;
- if (d->root_dnode) goto not_found;
- downd = dno;
- dno = le32_to_cpu(d->up);
- hpfs_brelse4(qbh);
- if (hpfs_sb(s)->sb_chk)
- if (hpfs_stop_cycles(s, downd, &d1, &d2, "map_fnode_dirent #2")) {
- kfree(name2);
- return NULL;
- }
- goto go_up;
- not_found:
- hpfs_brelse4(qbh);
- hpfs_error(s, "dirent for fnode %08x not found", fno);
- kfree(name2);
- return NULL;
-}
diff --git a/fs/hpfs/ea.c b/fs/hpfs/ea.c
deleted file mode 100644
index 4664f9ab06ee..000000000000
--- a/fs/hpfs/ea.c
+++ /dev/null
@@ -1,368 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * linux/fs/hpfs/ea.c
- *
- * Mikulas Patocka (mikulas@artax.karlin.mff.cuni.cz), 1998-1999
- *
- * handling extended attributes
- */
-
-#include "hpfs_fn.h"
-
-/* Remove external extended attributes. ano specifies whether a is a
- direct sector where eas starts or an anode */
-
-void hpfs_ea_ext_remove(struct super_block *s, secno a, int ano, unsigned len)
-{
- unsigned pos = 0;
- while (pos < len) {
- char ex[4 + 255 + 1 + 8];
- struct extended_attribute *ea = (struct extended_attribute *)ex;
- if (pos + 4 > len) {
- hpfs_error(s, "EAs don't end correctly, %s %08x, len %08x",
- ano ? "anode" : "sectors", a, len);
- return;
- }
- if (hpfs_ea_read(s, a, ano, pos, 4, ex)) return;
- if (ea_indirect(ea)) {
- if (ea_valuelen(ea) != 8) {
- hpfs_error(s, "ea_indirect(ea) set while ea->valuelen!=8, %s %08x, pos %08x",
- ano ? "anode" : "sectors", a, pos);
- return;
- }
- if (hpfs_ea_read(s, a, ano, pos + 4, ea->namelen + 9, ex+4))
- return;
- hpfs_ea_remove(s, ea_sec(ea), ea_in_anode(ea), ea_len(ea));
- }
- pos += ea->namelen + ea_valuelen(ea) + 5;
- }
- if (!ano) hpfs_free_sectors(s, a, (len+511) >> 9);
- else {
- struct buffer_head *bh;
- struct anode *anode;
- if ((anode = hpfs_map_anode(s, a, &bh))) {
- hpfs_remove_btree(s, GET_BTREE_PTR(&anode->btree));
- brelse(bh);
- hpfs_free_sectors(s, a, 1);
- }
- }
-}
-
-static char *get_indirect_ea(struct super_block *s, int ano, secno a, int size)
-{
- char *ret;
- if (!(ret = kmalloc(size + 1, GFP_NOFS))) {
- pr_err("out of memory for EA\n");
- return NULL;
- }
- if (hpfs_ea_read(s, a, ano, 0, size, ret)) {
- kfree(ret);
- return NULL;
- }
- ret[size] = 0;
- return ret;
-}
-
-static void set_indirect_ea(struct super_block *s, int ano, secno a,
- const char *data, int size)
-{
- hpfs_ea_write(s, a, ano, 0, size, data);
-}
-
-/* Read an extended attribute named 'key' into the provided buffer */
-
-int hpfs_read_ea(struct super_block *s, struct fnode *fnode, char *key,
- char *buf, int size)
-{
- unsigned pos;
- int ano, len;
- secno a;
- char ex[4 + 255 + 1 + 8];
- struct extended_attribute *ea;
- struct extended_attribute *ea_end = fnode_end_ea(fnode);
- for (ea = fnode_ea(fnode); ea < ea_end; ea = next_ea(ea))
- if (!strcmp(ea->name, key)) {
- if (ea_indirect(ea))
- goto indirect;
- if (ea_valuelen(ea) >= size)
- return -EINVAL;
- memcpy(buf, ea_data(ea), ea_valuelen(ea));
- buf[ea_valuelen(ea)] = 0;
- return 0;
- }
- a = le32_to_cpu(fnode->ea_secno);
- len = le32_to_cpu(fnode->ea_size_l);
- ano = fnode_in_anode(fnode);
- pos = 0;
- while (pos < len) {
- ea = (struct extended_attribute *)ex;
- if (pos + 4 > len) {
- hpfs_error(s, "EAs don't end correctly, %s %08x, len %08x",
- ano ? "anode" : "sectors", a, len);
- return -EIO;
- }
- if (hpfs_ea_read(s, a, ano, pos, 4, ex)) return -EIO;
- if (hpfs_ea_read(s, a, ano, pos + 4, ea->namelen + 1 + (ea_indirect(ea) ? 8 : 0), ex + 4))
- return -EIO;
- if (!strcmp(ea->name, key)) {
- if (ea_indirect(ea))
- goto indirect;
- if (ea_valuelen(ea) >= size)
- return -EINVAL;
- if (hpfs_ea_read(s, a, ano, pos + 4 + ea->namelen + 1, ea_valuelen(ea), buf))
- return -EIO;
- buf[ea_valuelen(ea)] = 0;
- return 0;
- }
- pos += ea->namelen + ea_valuelen(ea) + 5;
- }
- return -ENOENT;
-indirect:
- if (ea_len(ea) >= size)
- return -EINVAL;
- if (hpfs_ea_read(s, ea_sec(ea), ea_in_anode(ea), 0, ea_len(ea), buf))
- return -EIO;
- buf[ea_len(ea)] = 0;
- return 0;
-}
-
-/* Read an extended attribute named 'key' */
-char *hpfs_get_ea(struct super_block *s, struct fnode *fnode, char *key, int *size)
-{
- char *ret;
- unsigned pos;
- int ano, len;
- secno a;
- struct extended_attribute *ea;
- struct extended_attribute *ea_end = fnode_end_ea(fnode);
- for (ea = fnode_ea(fnode); ea < ea_end; ea = next_ea(ea))
- if (!strcmp(ea->name, key)) {
- if (ea_indirect(ea))
- return get_indirect_ea(s, ea_in_anode(ea), ea_sec(ea), *size = ea_len(ea));
- if (!(ret = kmalloc((*size = ea_valuelen(ea)) + 1, GFP_NOFS))) {
- pr_err("out of memory for EA\n");
- return NULL;
- }
- memcpy(ret, ea_data(ea), ea_valuelen(ea));
- ret[ea_valuelen(ea)] = 0;
- return ret;
- }
- a = le32_to_cpu(fnode->ea_secno);
- len = le32_to_cpu(fnode->ea_size_l);
- ano = fnode_in_anode(fnode);
- pos = 0;
- while (pos < len) {
- char ex[4 + 255 + 1 + 8];
- ea = (struct extended_attribute *)ex;
- if (pos + 4 > len) {
- hpfs_error(s, "EAs don't end correctly, %s %08x, len %08x",
- ano ? "anode" : "sectors", a, len);
- return NULL;
- }
- if (hpfs_ea_read(s, a, ano, pos, 4, ex)) return NULL;
- if (hpfs_ea_read(s, a, ano, pos + 4, ea->namelen + 1 + (ea_indirect(ea) ? 8 : 0), ex + 4))
- return NULL;
- if (!strcmp(ea->name, key)) {
- if (ea_indirect(ea))
- return get_indirect_ea(s, ea_in_anode(ea), ea_sec(ea), *size = ea_len(ea));
- if (!(ret = kmalloc((*size = ea_valuelen(ea)) + 1, GFP_NOFS))) {
- pr_err("out of memory for EA\n");
- return NULL;
- }
- if (hpfs_ea_read(s, a, ano, pos + 4 + ea->namelen + 1, ea_valuelen(ea), ret)) {
- kfree(ret);
- return NULL;
- }
- ret[ea_valuelen(ea)] = 0;
- return ret;
- }
- pos += ea->namelen + ea_valuelen(ea) + 5;
- }
- return NULL;
-}
-
-/*
- * Update or create extended attribute 'key' with value 'data'. Note that
- * when this ea exists, it MUST have the same size as size of data.
- * This driver can't change sizes of eas ('cause I just don't need it).
- */
-
-void hpfs_set_ea(struct inode *inode, struct fnode *fnode, const char *key,
- const char *data, int size)
-{
- fnode_secno fno = inode->i_ino;
- struct super_block *s = inode->i_sb;
- unsigned pos;
- int ano, len;
- secno a;
- unsigned char h[4];
- struct extended_attribute *ea;
- struct extended_attribute *ea_end = fnode_end_ea(fnode);
- for (ea = fnode_ea(fnode); ea < ea_end; ea = next_ea(ea))
- if (!strcmp(ea->name, key)) {
- if (ea_indirect(ea)) {
- if (ea_len(ea) == size)
- set_indirect_ea(s, ea_in_anode(ea), ea_sec(ea), data, size);
- } else if (ea_valuelen(ea) == size) {
- memcpy(ea_data(ea), data, size);
- }
- return;
- }
- a = le32_to_cpu(fnode->ea_secno);
- len = le32_to_cpu(fnode->ea_size_l);
- ano = fnode_in_anode(fnode);
- pos = 0;
- while (pos < len) {
- char ex[4 + 255 + 1 + 8];
- ea = (struct extended_attribute *)ex;
- if (pos + 4 > len) {
- hpfs_error(s, "EAs don't end correctly, %s %08x, len %08x",
- ano ? "anode" : "sectors", a, len);
- return;
- }
- if (hpfs_ea_read(s, a, ano, pos, 4, ex)) return;
- if (hpfs_ea_read(s, a, ano, pos + 4, ea->namelen + 1 + (ea_indirect(ea) ? 8 : 0), ex + 4))
- return;
- if (!strcmp(ea->name, key)) {
- if (ea_indirect(ea)) {
- if (ea_len(ea) == size)
- set_indirect_ea(s, ea_in_anode(ea), ea_sec(ea), data, size);
- }
- else {
- if (ea_valuelen(ea) == size)
- hpfs_ea_write(s, a, ano, pos + 4 + ea->namelen + 1, size, data);
- }
- return;
- }
- pos += ea->namelen + ea_valuelen(ea) + 5;
- }
- if (!le16_to_cpu(fnode->ea_offs)) {
- /*if (le16_to_cpu(fnode->ea_size_s)) {
- hpfs_error(s, "fnode %08x: ea_size_s == %03x, ea_offs == 0",
- inode->i_ino, le16_to_cpu(fnode->ea_size_s));
- return;
- }*/
- fnode->ea_offs = cpu_to_le16(0xc4);
- }
- if (le16_to_cpu(fnode->ea_offs) < 0xc4 || le16_to_cpu(fnode->ea_offs) + le16_to_cpu(fnode->acl_size_s) + le16_to_cpu(fnode->ea_size_s) > 0x200) {
- hpfs_error(s, "fnode %08llx: ea_offs == %03x, ea_size_s == %03x",
- inode->i_ino,
- le16_to_cpu(fnode->ea_offs), le16_to_cpu(fnode->ea_size_s));
- return;
- }
- if ((le16_to_cpu(fnode->ea_size_s) || !le32_to_cpu(fnode->ea_size_l)) &&
- le16_to_cpu(fnode->ea_offs) + le16_to_cpu(fnode->acl_size_s) + le16_to_cpu(fnode->ea_size_s) + strlen(key) + size + 5 <= 0x200) {
- ea = fnode_end_ea(fnode);
- *(char *)ea = 0;
- ea->namelen = strlen(key);
- ea->valuelen_lo = size;
- ea->valuelen_hi = size >> 8;
- strcpy(ea->name, key);
- memcpy(ea_data(ea), data, size);
- fnode->ea_size_s = cpu_to_le16(le16_to_cpu(fnode->ea_size_s) + strlen(key) + size + 5);
- goto ret;
- }
- /* Most the code here is 99.9993422% unused. I hope there are no bugs.
- But what .. HPFS.IFS has also bugs in ea management. */
- if (le16_to_cpu(fnode->ea_size_s) && !le32_to_cpu(fnode->ea_size_l)) {
- secno n;
- struct buffer_head *bh;
- char *data;
- if (!(n = hpfs_alloc_sector(s, fno, 1, 0))) return;
- if (!(data = hpfs_get_sector(s, n, &bh))) {
- hpfs_free_sectors(s, n, 1);
- return;
- }
- memcpy(data, fnode_ea(fnode), le16_to_cpu(fnode->ea_size_s));
- fnode->ea_size_l = cpu_to_le32(le16_to_cpu(fnode->ea_size_s));
- fnode->ea_size_s = cpu_to_le16(0);
- fnode->ea_secno = cpu_to_le32(n);
- fnode->flags &= ~FNODE_anode;
- mark_buffer_dirty(bh);
- brelse(bh);
- }
- pos = le32_to_cpu(fnode->ea_size_l) + 5 + strlen(key) + size;
- len = (le32_to_cpu(fnode->ea_size_l) + 511) >> 9;
- if (pos >= 30000) goto bail;
- while (((pos + 511) >> 9) > len) {
- if (!len) {
- secno q = hpfs_alloc_sector(s, fno, 1, 0);
- if (!q) goto bail;
- fnode->ea_secno = cpu_to_le32(q);
- fnode->flags &= ~FNODE_anode;
- len++;
- } else if (!fnode_in_anode(fnode)) {
- if (hpfs_alloc_if_possible(s, le32_to_cpu(fnode->ea_secno) + len)) {
- len++;
- } else {
- /* Aargh... don't know how to create ea anodes :-( */
- /*struct buffer_head *bh;
- struct anode *anode;
- anode_secno a_s;
- if (!(anode = hpfs_alloc_anode(s, fno, &a_s, &bh)))
- goto bail;
- anode->up = cpu_to_le32(fno);
- anode->btree.fnode_parent = 1;
- anode->btree.n_free_nodes--;
- anode->btree.n_used_nodes++;
- anode->btree.first_free = cpu_to_le16(le16_to_cpu(anode->btree.first_free) + 12);
- anode->u.external[0].disk_secno = cpu_to_le32(le32_to_cpu(fnode->ea_secno));
- anode->u.external[0].file_secno = cpu_to_le32(0);
- anode->u.external[0].length = cpu_to_le32(len);
- mark_buffer_dirty(bh);
- brelse(bh);
- fnode->flags |= FNODE_anode;
- fnode->ea_secno = cpu_to_le32(a_s);*/
- secno new_sec;
- int i;
- if (!(new_sec = hpfs_alloc_sector(s, fno, 1, 1 - ((pos + 511) >> 9))))
- goto bail;
- for (i = 0; i < len; i++) {
- struct buffer_head *bh1, *bh2;
- void *b1, *b2;
- if (!(b1 = hpfs_map_sector(s, le32_to_cpu(fnode->ea_secno) + i, &bh1, len - i - 1))) {
- hpfs_free_sectors(s, new_sec, (pos + 511) >> 9);
- goto bail;
- }
- if (!(b2 = hpfs_get_sector(s, new_sec + i, &bh2))) {
- brelse(bh1);
- hpfs_free_sectors(s, new_sec, (pos + 511) >> 9);
- goto bail;
- }
- memcpy(b2, b1, 512);
- brelse(bh1);
- mark_buffer_dirty(bh2);
- brelse(bh2);
- }
- hpfs_free_sectors(s, le32_to_cpu(fnode->ea_secno), len);
- fnode->ea_secno = cpu_to_le32(new_sec);
- len = (pos + 511) >> 9;
- }
- }
- if (fnode_in_anode(fnode)) {
- if (hpfs_add_sector_to_btree(s, le32_to_cpu(fnode->ea_secno),
- 0, len) != -1) {
- len++;
- } else {
- goto bail;
- }
- }
- }
- h[0] = 0;
- h[1] = strlen(key);
- h[2] = size & 0xff;
- h[3] = size >> 8;
- if (hpfs_ea_write(s, le32_to_cpu(fnode->ea_secno), fnode_in_anode(fnode), le32_to_cpu(fnode->ea_size_l), 4, h)) goto bail;
- if (hpfs_ea_write(s, le32_to_cpu(fnode->ea_secno), fnode_in_anode(fnode), le32_to_cpu(fnode->ea_size_l) + 4, h[1] + 1, key)) goto bail;
- if (hpfs_ea_write(s, le32_to_cpu(fnode->ea_secno), fnode_in_anode(fnode), le32_to_cpu(fnode->ea_size_l) + 5 + h[1], size, data)) goto bail;
- fnode->ea_size_l = cpu_to_le32(pos);
- ret:
- hpfs_i(inode)->i_ea_size += 5 + strlen(key) + size;
- return;
- bail:
- if (le32_to_cpu(fnode->ea_secno))
- if (fnode_in_anode(fnode)) hpfs_truncate_btree(s, le32_to_cpu(fnode->ea_secno), 1, (le32_to_cpu(fnode->ea_size_l) + 511) >> 9);
- else hpfs_free_sectors(s, le32_to_cpu(fnode->ea_secno) + ((le32_to_cpu(fnode->ea_size_l) + 511) >> 9), len - ((le32_to_cpu(fnode->ea_size_l) + 511) >> 9));
- else fnode->ea_secno = fnode->ea_size_l = cpu_to_le32(0);
-}
-
diff --git a/fs/hpfs/file.c b/fs/hpfs/file.c
deleted file mode 100644
index 6a629ab956fc..000000000000
--- a/fs/hpfs/file.c
+++ /dev/null
@@ -1,276 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * linux/fs/hpfs/file.c
- *
- * Mikulas Patocka (mikulas@artax.karlin.mff.cuni.cz), 1998-1999
- *
- * file VFS functions
- */
-
-#include "hpfs_fn.h"
-#include <linux/mpage.h>
-#include <linux/iomap.h>
-#include <linux/fiemap.h>
-
-#define BLOCKS(size) (((size) + 511) >> 9)
-
-static int hpfs_file_release(struct inode *inode, struct file *file)
-{
- hpfs_lock(inode->i_sb);
- hpfs_write_if_changed(inode);
- hpfs_unlock(inode->i_sb);
- return 0;
-}
-
-int hpfs_file_fsync(struct file *file, loff_t start, loff_t end, int datasync)
-{
- struct inode *inode = file->f_mapping->host;
- int ret;
-
- ret = file_write_and_wait_range(file, start, end);
- if (ret)
- return ret;
- return sync_blockdev(inode->i_sb->s_bdev);
-}
-
-/*
- * generic_file_read often calls bmap with non-existing sector,
- * so we must ignore such errors.
- */
-
-static secno hpfs_bmap(struct inode *inode, unsigned file_secno, unsigned *n_secs)
-{
- struct hpfs_inode_info *hpfs_inode = hpfs_i(inode);
- unsigned n, disk_secno;
- struct fnode *fnode;
- struct buffer_head *bh;
- if (BLOCKS(hpfs_i(inode)->mmu_private) <= file_secno) return 0;
- n = file_secno - hpfs_inode->i_file_sec;
- if (n < hpfs_inode->i_n_secs) {
- *n_secs = hpfs_inode->i_n_secs - n;
- return hpfs_inode->i_disk_sec + n;
- }
- if (!(fnode = hpfs_map_fnode(inode->i_sb, inode->i_ino, &bh))) return 0;
- disk_secno = hpfs_bplus_lookup(inode->i_sb, inode,
- GET_BTREE_PTR(&fnode->btree),
- file_secno, bh);
- if (disk_secno == -1) return 0;
- if (hpfs_chk_sectors(inode->i_sb, disk_secno, 1, "bmap")) return 0;
- n = file_secno - hpfs_inode->i_file_sec;
- if (n < hpfs_inode->i_n_secs) {
- *n_secs = hpfs_inode->i_n_secs - n;
- return hpfs_inode->i_disk_sec + n;
- }
- *n_secs = 1;
- return disk_secno;
-}
-
-void hpfs_truncate(struct inode *i)
-{
- if (IS_IMMUTABLE(i)) return /*-EPERM*/;
- hpfs_lock_assert(i->i_sb);
-
- hpfs_i(i)->i_n_secs = 0;
- i->i_blocks = 1 + ((i->i_size + 511) >> 9);
- hpfs_i(i)->mmu_private = i->i_size;
- hpfs_truncate_btree(i->i_sb, i->i_ino, 1, ((i->i_size + 511) >> 9));
- hpfs_write_inode(i);
- hpfs_i(i)->i_n_secs = 0;
-}
-
-static int hpfs_get_block(struct inode *inode, sector_t iblock, struct buffer_head *bh_result, int create)
-{
- int r;
- secno s;
- unsigned n_secs;
- hpfs_lock(inode->i_sb);
- s = hpfs_bmap(inode, iblock, &n_secs);
- if (s) {
- if (bh_result->b_size >> 9 < n_secs)
- n_secs = bh_result->b_size >> 9;
- n_secs = hpfs_search_hotfix_map_for_range(inode->i_sb, s, n_secs);
- if (unlikely(!n_secs)) {
- s = hpfs_search_hotfix_map(inode->i_sb, s);
- n_secs = 1;
- }
- map_bh(bh_result, inode->i_sb, s);
- bh_result->b_size = n_secs << 9;
- goto ret_0;
- }
- if (!create) goto ret_0;
- if (iblock<<9 != hpfs_i(inode)->mmu_private) {
- BUG();
- r = -EIO;
- goto ret_r;
- }
- if ((s = hpfs_add_sector_to_btree(inode->i_sb, inode->i_ino, 1, inode->i_blocks - 1)) == -1) {
- hpfs_truncate_btree(inode->i_sb, inode->i_ino, 1, inode->i_blocks - 1);
- r = -ENOSPC;
- goto ret_r;
- }
- inode->i_blocks++;
- hpfs_i(inode)->mmu_private += 512;
- set_buffer_new(bh_result);
- map_bh(bh_result, inode->i_sb, hpfs_search_hotfix_map(inode->i_sb, s));
- ret_0:
- r = 0;
- ret_r:
- hpfs_unlock(inode->i_sb);
- return r;
-}
-
-static int hpfs_iomap_begin(struct inode *inode, loff_t offset, loff_t length,
- unsigned flags, struct iomap *iomap, struct iomap *srcmap)
-{
- struct super_block *sb = inode->i_sb;
- unsigned int blkbits = inode->i_blkbits;
- unsigned int n_secs;
- secno s;
-
- if (WARN_ON_ONCE(flags & (IOMAP_WRITE | IOMAP_ZERO)))
- return -EINVAL;
-
- iomap->bdev = inode->i_sb->s_bdev;
- iomap->offset = offset;
-
- hpfs_lock(sb);
- s = hpfs_bmap(inode, offset >> blkbits, &n_secs);
- if (s) {
- n_secs = hpfs_search_hotfix_map_for_range(sb, s,
- min_t(loff_t, n_secs, length));
- if (unlikely(!n_secs)) {
- s = hpfs_search_hotfix_map(sb, s);
- n_secs = 1;
- }
- iomap->type = IOMAP_MAPPED;
- iomap->flags = IOMAP_F_MERGED;
- iomap->addr = (u64)s << blkbits;
- iomap->length = (u64)n_secs << blkbits;
- } else {
- iomap->type = IOMAP_HOLE;
- iomap->addr = IOMAP_NULL_ADDR;
- iomap->length = 1 << blkbits;
- }
-
- hpfs_unlock(sb);
- return 0;
-}
-
-static DEFINE_IOMAP_ITER_NEXT(hpfs_iomap_next, hpfs_iomap_begin);
-
-static const struct iomap_ops hpfs_iomap_ops = {
- .iomap_next = hpfs_iomap_next,
-};
-
-static int hpfs_read_folio(struct file *file, struct folio *folio)
-{
- return mpage_read_folio(folio, hpfs_get_block);
-}
-
-static void hpfs_readahead(struct readahead_control *rac)
-{
- mpage_readahead(rac, hpfs_get_block);
-}
-
-static int hpfs_writepages(struct address_space *mapping,
- struct writeback_control *wbc)
-{
- return mpage_writepages(mapping, wbc, hpfs_get_block);
-}
-
-static void hpfs_write_failed(struct address_space *mapping, loff_t to)
-{
- struct inode *inode = mapping->host;
-
- hpfs_lock(inode->i_sb);
-
- if (to > inode->i_size) {
- truncate_pagecache(inode, inode->i_size);
- hpfs_truncate(inode);
- }
-
- hpfs_unlock(inode->i_sb);
-}
-
-static int hpfs_write_begin(const struct kiocb *iocb,
- struct address_space *mapping,
- loff_t pos, unsigned len,
- struct folio **foliop, void **fsdata)
-{
- int ret;
-
- ret = cont_write_begin(iocb, mapping, pos, len, foliop, fsdata,
- hpfs_get_block,
- &hpfs_i(mapping->host)->mmu_private);
- if (unlikely(ret))
- hpfs_write_failed(mapping, pos + len);
-
- return ret;
-}
-
-static int hpfs_write_end(const struct kiocb *iocb,
- struct address_space *mapping,
- loff_t pos, unsigned len, unsigned copied,
- struct folio *folio, void *fsdata)
-{
- struct inode *inode = mapping->host;
- int err;
- err = generic_write_end(iocb, mapping, pos, len, copied, folio, fsdata);
- if (err < len)
- hpfs_write_failed(mapping, pos + len);
- if (!(err < 0)) {
- /* make sure we write it on close, if not earlier */
- hpfs_lock(inode->i_sb);
- hpfs_i(inode)->i_dirty = 1;
- hpfs_unlock(inode->i_sb);
- }
- return err;
-}
-
-static sector_t _hpfs_bmap(struct address_space *mapping, sector_t block)
-{
- return generic_block_bmap(mapping, block, hpfs_get_block);
-}
-
-static int hpfs_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo, u64 start, u64 len)
-{
- int ret;
-
- inode_lock(inode);
- len = min_t(u64, len, i_size_read(inode));
- ret = iomap_fiemap(inode, fieinfo, start, len, &hpfs_iomap_ops);
- inode_unlock(inode);
-
- return ret;
-}
-
-const struct address_space_operations hpfs_aops = {
- .dirty_folio = block_dirty_folio,
- .invalidate_folio = block_invalidate_folio,
- .read_folio = hpfs_read_folio,
- .readahead = hpfs_readahead,
- .writepages = hpfs_writepages,
- .write_begin = hpfs_write_begin,
- .write_end = hpfs_write_end,
- .bmap = _hpfs_bmap,
- .migrate_folio = buffer_migrate_folio,
-};
-
-const struct file_operations hpfs_file_ops =
-{
- .llseek = generic_file_llseek,
- .read_iter = generic_file_read_iter,
- .write_iter = generic_file_write_iter,
- .mmap_prepare = generic_file_mmap_prepare,
- .release = hpfs_file_release,
- .fsync = hpfs_file_fsync,
- .splice_read = filemap_splice_read,
- .unlocked_ioctl = hpfs_ioctl,
- .compat_ioctl = compat_ptr_ioctl,
-};
-
-const struct inode_operations hpfs_file_iops =
-{
- .setattr = hpfs_setattr,
- .fiemap = hpfs_fiemap,
-};
diff --git a/fs/hpfs/hpfs.h b/fs/hpfs/hpfs.h
deleted file mode 100644
index 353f73c914d9..000000000000
--- a/fs/hpfs/hpfs.h
+++ /dev/null
@@ -1,579 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/*
- * linux/fs/hpfs/hpfs.h
- *
- * HPFS structures by Chris Smith, 1993
- *
- * a little bit modified by Mikulas Patocka, 1998-1999
- */
-
-/* The paper
-
- Duncan, Roy
- Design goals and implementation of the new High Performance File System
- Microsoft Systems Journal Sept 1989 v4 n5 p1(13)
-
- describes what HPFS looked like when it was new, and it is the source
- of most of the information given here. The rest is conjecture.
-
- For definitive information on the Duncan paper, see it, not this file.
- For definitive information on HPFS, ask somebody else -- this is guesswork.
- There are certain to be many mistakes. */
-
-#if !defined(__LITTLE_ENDIAN) && !defined(__BIG_ENDIAN)
-#error unknown endian
-#endif
-
-/* Notation */
-
-typedef u32 secno; /* sector number, partition relative */
-
-typedef secno dnode_secno; /* sector number of a dnode */
-typedef secno fnode_secno; /* sector number of an fnode */
-typedef secno anode_secno; /* sector number of an anode */
-
-typedef u32 time32_t; /* 32-bit time_t type */
-
-/* sector 0 */
-
-/* The boot block is very like a FAT boot block, except that the
- 29h signature byte is 28h instead, and the ID string is "HPFS". */
-
-#define BB_MAGIC 0xaa55
-
-struct hpfs_boot_block
-{
- u8 jmp[3];
- u8 oem_id[8];
- u8 bytes_per_sector[2]; /* 512 */
- u8 sectors_per_cluster;
- u8 n_reserved_sectors[2];
- u8 n_fats;
- u8 n_rootdir_entries[2];
- u8 n_sectors_s[2];
- u8 media_byte;
- __le16 sectors_per_fat;
- __le16 sectors_per_track;
- __le16 heads_per_cyl;
- __le32 n_hidden_sectors;
- __le32 n_sectors_l; /* size of partition */
- u8 drive_number;
- u8 mbz;
- u8 sig_28h; /* 28h */
- u8 vol_serno[4];
- u8 vol_label[11];
- u8 sig_hpfs[8]; /* "HPFS " */
- u8 pad[448];
- __le16 magic; /* aa55 */
-};
-
-
-/* sector 16 */
-
-/* The super block has the pointer to the root directory. */
-
-#define SB_MAGIC 0xf995e849
-
-struct hpfs_super_block
-{
- __le32 magic; /* f995 e849 */
- __le32 magic1; /* fa53 e9c5, more magic? */
- u8 version; /* version of a filesystem usually 2 */
- u8 funcversion; /* functional version - oldest version
- of filesystem that can understand
- this disk */
- __le16 zero; /* 0 */
- __le32 root; /* fnode of root directory */
- __le32 n_sectors; /* size of filesystem */
- __le32 n_badblocks; /* number of bad blocks */
- __le32 bitmaps; /* pointers to free space bit maps */
- __le32 zero1; /* 0 */
- __le32 badblocks; /* bad block list */
- __le32 zero3; /* 0 */
- __le32 last_chkdsk; /* date last checked, 0 if never */
- __le32 last_optimize; /* date last optimized, 0 if never */
- __le32 n_dir_band; /* number of sectors in dir band */
- __le32 dir_band_start; /* first sector in dir band */
- __le32 dir_band_end; /* last sector in dir band */
- __le32 dir_band_bitmap; /* free space map, 1 dnode per bit */
- u8 volume_name[32]; /* not used */
- __le32 user_id_table; /* 8 preallocated sectors - user id */
- u32 zero6[103]; /* 0 */
-};
-
-
-/* sector 17 */
-
-/* The spare block has pointers to spare sectors. */
-
-#define SP_MAGIC 0xf9911849
-
-struct hpfs_spare_block
-{
- __le32 magic; /* f991 1849 */
- __le32 magic1; /* fa52 29c5, more magic? */
-
-#ifdef __LITTLE_ENDIAN
- u8 dirty: 1; /* 0 clean, 1 "improperly stopped" */
- u8 sparedir_used: 1; /* spare dirblks used */
- u8 hotfixes_used: 1; /* hotfixes used */
- u8 bad_sector: 1; /* bad sector, corrupted disk (???) */
- u8 bad_bitmap: 1; /* bad bitmap */
- u8 fast: 1; /* partition was fast formatted */
- u8 old_wrote: 1; /* old version wrote to partition */
- u8 old_wrote_1: 1; /* old version wrote to partition (?) */
-#else
- u8 old_wrote_1: 1; /* old version wrote to partition (?) */
- u8 old_wrote: 1; /* old version wrote to partition */
- u8 fast: 1; /* partition was fast formatted */
- u8 bad_bitmap: 1; /* bad bitmap */
- u8 bad_sector: 1; /* bad sector, corrupted disk (???) */
- u8 hotfixes_used: 1; /* hotfixes used */
- u8 sparedir_used: 1; /* spare dirblks used */
- u8 dirty: 1; /* 0 clean, 1 "improperly stopped" */
-#endif
-
-#ifdef __LITTLE_ENDIAN
- u8 install_dasd_limits: 1; /* HPFS386 flags */
- u8 resynch_dasd_limits: 1;
- u8 dasd_limits_operational: 1;
- u8 multimedia_active: 1;
- u8 dce_acls_active: 1;
- u8 dasd_limits_dirty: 1;
- u8 flag67: 2;
-#else
- u8 flag67: 2;
- u8 dasd_limits_dirty: 1;
- u8 dce_acls_active: 1;
- u8 multimedia_active: 1;
- u8 dasd_limits_operational: 1;
- u8 resynch_dasd_limits: 1;
- u8 install_dasd_limits: 1; /* HPFS386 flags */
-#endif
-
- u8 mm_contlgulty;
- u8 unused;
-
- __le32 hotfix_map; /* info about remapped bad sectors */
- __le32 n_spares_used; /* number of hotfixes */
- __le32 n_spares; /* number of spares in hotfix map */
- __le32 n_dnode_spares_free; /* spare dnodes unused */
- __le32 n_dnode_spares; /* length of spare_dnodes[] list,
- follows in this block*/
- __le32 code_page_dir; /* code page directory block */
- __le32 n_code_pages; /* number of code pages */
- __le32 super_crc; /* on HPFS386 and LAN Server this is
- checksum of superblock, on normal
- OS/2 unused */
- __le32 spare_crc; /* on HPFS386 checksum of spareblock */
- __le32 zero1[15]; /* unused */
- __le32 spare_dnodes[100]; /* emergency free dnode list */
- __le32 zero2[1]; /* room for more? */
-};
-
-/* The bad block list is 4 sectors long. The first word must be zero,
- the remaining words give n_badblocks bad block numbers.
- I bet you can see it coming... */
-
-#define BAD_MAGIC 0
-
-/* The hotfix map is 4 sectors long. It looks like
-
- secno from[n_spares];
- secno to[n_spares];
-
- The to[] list is initialized to point to n_spares preallocated empty
- sectors. The from[] list contains the sector numbers of bad blocks
- which have been remapped to corresponding sectors in the to[] list.
- n_spares_used gives the length of the from[] list. */
-
-
-/* Sectors 18 and 19 are preallocated and unused.
- Maybe they're spares for 16 and 17, but simple substitution fails. */
-
-
-/* The code page info pointed to by the spare block consists of an index
- block and blocks containing uppercasing tables. I don't know what
- these are for (CHKDSK, maybe?) -- OS/2 does not seem to use them
- itself. Linux doesn't use them either. */
-
-/* block pointed to by spareblock->code_page_dir */
-
-#define CP_DIR_MAGIC 0x494521f7
-
-struct code_page_directory
-{
- __le32 magic; /* 4945 21f7 */
- __le32 n_code_pages; /* number of pointers following */
- __le32 zero1[2];
- struct {
- __le16 ix; /* index */
- __le16 code_page_number; /* code page number */
- __le32 bounds; /* matches corresponding word
- in data block */
- __le32 code_page_data; /* sector number of a code_page_data
- containing c.p. array */
- __le16 index; /* index in c.p. array in that sector*/
- __le16 unknown; /* some unknown value; usually 0;
- 2 in Japanese version */
- } array[31]; /* unknown length */
-};
-
-/* blocks pointed to by code_page_directory */
-
-#define CP_DATA_MAGIC 0x894521f7
-
-struct code_page_data
-{
- __le32 magic; /* 8945 21f7 */
- __le32 n_used; /* # elements used in c_p_data[] */
- __le32 bounds[3]; /* looks a bit like
- (beg1,end1), (beg2,end2)
- one byte each */
- __le16 offs[3]; /* offsets from start of sector
- to start of c_p_data[ix] */
- struct {
- __le16 ix; /* index */
- __le16 code_page_number; /* code page number */
- __le16 unknown; /* the same as in cp directory */
- u8 map[128]; /* upcase table for chars 80..ff */
- __le16 zero2;
- } code_page[3];
- u8 incognita[78];
-};
-
-
-/* Free space bitmaps are 4 sectors long, which is 16384 bits.
- 16384 sectors is 8 meg, and each 8 meg band has a 4-sector bitmap.
- Bit order in the maps is little-endian. 0 means taken, 1 means free.
-
- Bit map sectors are marked allocated in the bit maps, and so are sectors
- off the end of the partition.
-
- Band 0 is sectors 0-3fff, its map is in sectors 18-1b.
- Band 1 is 4000-7fff, its map is in 7ffc-7fff.
- Band 2 is 8000-ffff, its map is in 8000-8003.
- The remaining bands have maps in their first (even) or last (odd) 4 sectors
- -- if the last, partial, band is odd its map is in its last 4 sectors.
-
- The bitmap locations are given in a table pointed to by the super block.
- No doubt they aren't constrained to be at 18, 7ffc, 8000, ...; that is
- just where they usually are.
-
- The "directory band" is a bunch of sectors preallocated for dnodes.
- It has a 4-sector free space bitmap of its own. Each bit in the map
- corresponds to one 4-sector dnode, bit 0 of the map corresponding to
- the first 4 sectors of the directory band. The entire band is marked
- allocated in the main bitmap. The super block gives the locations
- of the directory band and its bitmap. ("band" doesn't mean it is
- 8 meg long; it isn't.) */
-
-
-/* dnode: directory. 4 sectors long */
-
-/* A directory is a tree of dnodes. The fnode for a directory
- contains one pointer, to the root dnode of the tree. The fnode
- never moves, the dnodes do the B-tree thing, splitting and merging
- as files are added and removed. */
-
-#define DNODE_MAGIC 0x77e40aae
-
-struct dnode {
- __le32 magic; /* 77e4 0aae */
- __le32 first_free; /* offset from start of dnode to
- first free dir entry */
-#ifdef __LITTLE_ENDIAN
- u8 root_dnode: 1; /* Is it root dnode? */
- u8 increment_me: 7; /* some kind of activity counter? */
- /* Neither HPFS.IFS nor CHKDSK cares
- if you change this word */
-#else
- u8 increment_me: 7; /* some kind of activity counter? */
- /* Neither HPFS.IFS nor CHKDSK cares
- if you change this word */
- u8 root_dnode: 1; /* Is it root dnode? */
-#endif
- u8 increment_me2[3];
- __le32 up; /* (root dnode) directory's fnode
- (nonroot) parent dnode */
- __le32 self; /* pointer to this dnode */
- u8 dirent[2028]; /* one or more dirents */
-};
-
-struct hpfs_dirent {
- __le16 length; /* offset to next dirent */
-
-#ifdef __LITTLE_ENDIAN
- u8 first: 1; /* set on phony ^A^A (".") entry */
- u8 has_acl: 1;
- u8 down: 1; /* down pointer present (after name) */
- u8 last: 1; /* set on phony \377 entry */
- u8 has_ea: 1; /* entry has EA */
- u8 has_xtd_perm: 1; /* has extended perm list (???) */
- u8 has_explicit_acl: 1;
- u8 has_needea: 1; /* ?? some EA has NEEDEA set
- I have no idea why this is
- interesting in a dir entry */
-#else
- u8 has_needea: 1; /* ?? some EA has NEEDEA set
- I have no idea why this is
- interesting in a dir entry */
- u8 has_explicit_acl: 1;
- u8 has_xtd_perm: 1; /* has extended perm list (???) */
- u8 has_ea: 1; /* entry has EA */
- u8 last: 1; /* set on phony \377 entry */
- u8 down: 1; /* down pointer present (after name) */
- u8 has_acl: 1;
- u8 first: 1; /* set on phony ^A^A (".") entry */
-#endif
-
-#ifdef __LITTLE_ENDIAN
- u8 read_only: 1; /* dos attrib */
- u8 hidden: 1; /* dos attrib */
- u8 system: 1; /* dos attrib */
- u8 flag11: 1; /* would be volume label dos attrib */
- u8 directory: 1; /* dos attrib */
- u8 archive: 1; /* dos attrib */
- u8 not_8x3: 1; /* name is not 8.3 */
- u8 flag15: 1;
-#else
- u8 flag15: 1;
- u8 not_8x3: 1; /* name is not 8.3 */
- u8 archive: 1; /* dos attrib */
- u8 directory: 1; /* dos attrib */
- u8 flag11: 1; /* would be volume label dos attrib */
- u8 system: 1; /* dos attrib */
- u8 hidden: 1; /* dos attrib */
- u8 read_only: 1; /* dos attrib */
-#endif
-
- __le32 fnode; /* fnode giving allocation info */
- __le32 write_date; /* mtime */
- __le32 file_size; /* file length, bytes */
- __le32 read_date; /* atime */
- __le32 creation_date; /* ctime */
- __le32 ea_size; /* total EA length, bytes */
- u8 no_of_acls; /* number of ACL's (low 3 bits) */
- u8 ix; /* code page index (of filename), see
- struct code_page_data */
- u8 namelen; /* file name length */
- u8 name[]; /* file name */
- /* dnode_secno down; btree down pointer, if present,
- follows name on next word boundary, or maybe it
- precedes next dirent, which is on a word boundary. */
-};
-
-
-/* B+ tree: allocation info in fnodes and anodes */
-
-/* dnodes point to fnodes which are responsible for listing the sectors
- assigned to the file. This is done with trees of (length,address)
- pairs. (Actually triples, of (length, file-address, disk-address)
- which can represent holes. Find out if HPFS does that.)
- At any rate, fnodes contain a small tree; if subtrees are needed
- they occupy essentially a full block in anodes. A leaf-level tree node
- has 3-word entries giving sector runs, a non-leaf node has 2-word
- entries giving subtree pointers. A flag in the header says which. */
-
-struct bplus_leaf_node
-{
- __le32 file_secno; /* first file sector in extent */
- __le32 length; /* length, sectors */
- __le32 disk_secno; /* first corresponding disk sector */
-};
-
-struct bplus_internal_node
-{
- __le32 file_secno; /* subtree maps sectors < this */
- __le32 down; /* pointer to subtree */
-};
-
-enum {
- BP_hbff = 1,
- BP_fnode_parent = 0x20,
- BP_binary_search = 0x40,
- BP_internal = 0x80
-};
-
-/**
- * GET_BTREE_PTR() - Get a pointer to struct bplus_header
- *
- * Wrapper around container_of() to retrieve a pointer to struct
- * bplus_header from a pointer to struct bplus_header_fixed.
- *
- * @ptr: Pointer to struct bplus_header_fixed.
- *
- */
-#define GET_BTREE_PTR(ptr) \
- container_of(ptr, struct bplus_header, __hdr)
-
-struct bplus_header
-{
- /* New members MUST be added within the struct_group() macro below. */
- struct_group_tagged(bplus_header_fixed, __hdr,
- u8 flags; /* bit 0 - high bit of first free entry offset
- bit 5 - we're pointed to by an fnode,
- the data btree or some ea or the
- main ea bootage pointer ea_secno
- bit 6 - suggest binary search (unused)
- bit 7 - 1 -> (internal) tree of anodes
- 0 -> (leaf) list of extents */
- u8 fill[3];
- u8 n_free_nodes; /* free nodes in following array */
- u8 n_used_nodes; /* used nodes in following array */
- __le16 first_free; /* offset from start of header to
- first free node in array */
- );
- union {
- /* (internal) 2-word entries giving subtree pointers */
- DECLARE_FLEX_ARRAY(struct bplus_internal_node, internal);
- /* (external) 3-word entries giving sector runs */
- DECLARE_FLEX_ARRAY(struct bplus_leaf_node, external);
- } u;
-};
-static_assert(offsetof(struct bplus_header, u.internal) == sizeof(struct bplus_header_fixed),
- "struct member likely outside of struct_group_tagged()");
-
-static inline bool bp_internal(struct bplus_header *bp)
-{
- return bp->flags & BP_internal;
-}
-
-static inline bool bp_fnode_parent(struct bplus_header *bp)
-{
- return bp->flags & BP_fnode_parent;
-}
-
-/* fnode: root of allocation b+ tree, and EA's */
-
-/* Every file and every directory has one fnode, pointed to by the directory
- entry and pointing to the file's sectors or directory's root dnode. EA's
- are also stored here, and there are said to be ACL's somewhere here too. */
-
-#define FNODE_MAGIC 0xf7e40aae
-
-enum {FNODE_anode = cpu_to_le16(2), FNODE_dir = cpu_to_le16(256)};
-struct fnode
-{
- __le32 magic; /* f7e4 0aae */
- __le32 zero1[2]; /* read history */
- u8 len, name[15]; /* true length, truncated name */
- __le32 up; /* pointer to file's directory fnode */
- __le32 acl_size_l;
- __le32 acl_secno;
- __le16 acl_size_s;
- u8 acl_anode;
- u8 zero2; /* history bit count */
- __le32 ea_size_l; /* length of disk-resident ea's */
- __le32 ea_secno; /* first sector of disk-resident ea's*/
- __le16 ea_size_s; /* length of fnode-resident ea's */
-
- __le16 flags; /* bit 1 set -> ea_secno is an anode */
- /* bit 8 set -> directory. first & only extent
- points to dnode. */
- struct bplus_header_fixed btree; /* b+ tree, 8 extents or 12 subtrees */
- union {
- struct bplus_leaf_node external[8];
- struct bplus_internal_node internal[12];
- } u;
-
- __le32 file_size; /* file length, bytes */
- __le32 n_needea; /* number of EA's with NEEDEA set */
- u8 user_id[16]; /* unused */
- __le16 ea_offs; /* offset from start of fnode
- to first fnode-resident ea */
- u8 dasd_limit_treshhold;
- u8 dasd_limit_delta;
- __le32 dasd_limit;
- __le32 dasd_usage;
- u8 ea[316]; /* zero or more EA's, packed together
- with no alignment padding.
- (Do not use this name, get here
- via fnode + ea_offs. I think.) */
-};
-
-static inline bool fnode_in_anode(struct fnode *p)
-{
- return (p->flags & FNODE_anode) != 0;
-}
-
-static inline bool fnode_is_dir(struct fnode *p)
-{
- return (p->flags & FNODE_dir) != 0;
-}
-
-
-/* anode: 99.44% pure allocation tree */
-
-#define ANODE_MAGIC 0x37e40aae
-
-struct anode
-{
- __le32 magic; /* 37e4 0aae */
- __le32 self; /* pointer to this anode */
- __le32 up; /* parent anode or fnode */
-
- struct bplus_header_fixed btree; /* b+tree, 40 extents or 60 subtrees */
- union {
- struct bplus_leaf_node external[40];
- struct bplus_internal_node internal[60];
- } u;
-
- __le32 fill[3]; /* unused */
-};
-
-
-/* extended attributes.
-
- A file's EA info is stored as a list of (name,value) pairs. It is
- usually in the fnode, but (if it's large) it is moved to a single
- sector run outside the fnode, or to multiple runs with an anode tree
- that points to them.
-
- The value of a single EA is stored along with the name, or (if large)
- it is moved to a single sector run, or multiple runs pointed to by an
- anode tree, pointed to by the value field of the (name,value) pair.
-
- Flags in the EA tell whether the value is immediate, in a single sector
- run, or in multiple runs. Flags in the fnode tell whether the EA list
- is immediate, in a single run, or in multiple runs. */
-
-enum {EA_indirect = 1, EA_anode = 2, EA_needea = 128 };
-struct extended_attribute
-{
- u8 flags; /* bit 0 set -> value gives sector number
- where real value starts */
- /* bit 1 set -> sector is an anode
- that points to fragmented value */
- /* bit 7 set -> required ea */
- u8 namelen; /* length of name, bytes */
- u8 valuelen_lo; /* length of value, bytes */
- u8 valuelen_hi; /* length of value, bytes */
- u8 name[];
- /*
- u8 name[namelen]; ascii attrib name
- u8 nul; terminating '\0', not counted
- u8 value[valuelen]; value, arbitrary
- if this.flags & 1, valuelen is 8 and the value is
- u32 length; real length of value, bytes
- secno secno; sector address where it starts
- if this.anode, the above sector number is the root of an anode tree
- which points to the value.
- */
-};
-
-static inline bool ea_indirect(struct extended_attribute *ea)
-{
- return ea->flags & EA_indirect;
-}
-
-static inline bool ea_in_anode(struct extended_attribute *ea)
-{
- return ea->flags & EA_anode;
-}
-
-/*
- Local Variables:
- comment-column: 40
- End:
-*/
diff --git a/fs/hpfs/hpfs_fn.h b/fs/hpfs/hpfs_fn.h
deleted file mode 100644
index a398dd8bdf30..000000000000
--- a/fs/hpfs/hpfs_fn.h
+++ /dev/null
@@ -1,379 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/*
- * linux/fs/hpfs/hpfs_fn.h
- *
- * Mikulas Patocka (mikulas@artax.karlin.mff.cuni.cz), 1998-1999
- *
- * function headers
- */
-
-//#define DBG
-//#define DEBUG_LOCKS
-#ifdef pr_fmt
-#undef pr_fmt
-#endif
-
-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-
-#include <linux/mutex.h>
-#include <linux/pagemap.h>
-#include <linux/buffer_head.h>
-#include <linux/slab.h>
-#include <linux/sched/signal.h>
-#include <linux/blkdev.h>
-#include <linux/unaligned.h>
-
-#include "hpfs.h"
-
-#define EIOERROR EIO
-#define EFSERROR EUCLEAN
-
-#define ANODE_ALLOC_FWD 512
-#define FNODE_ALLOC_FWD 0
-#define ALLOC_FWD_MIN 16
-#define ALLOC_FWD_MAX 128
-#define ALLOC_M 1
-#define FNODE_RD_AHEAD 16
-#define ANODE_RD_AHEAD 0
-#define DNODE_RD_AHEAD 72
-#define COUNT_RD_AHEAD 62
-
-#define FREE_DNODES_ADD 58
-#define FREE_DNODES_DEL 29
-
-#define CHKCOND(x,y) if (!(x)) printk y
-
-struct hpfs_inode_info {
- loff_t mmu_private;
- ino_t i_parent_dir; /* (directories) gives fnode of parent dir */
- unsigned i_dno; /* (directories) root dnode */
- unsigned i_dpos; /* (directories) temp for readdir */
- unsigned i_dsubdno; /* (directories) temp for readdir */
- unsigned i_file_sec; /* (files) minimalist cache of alloc info */
- unsigned i_disk_sec; /* (files) minimalist cache of alloc info */
- unsigned i_n_secs; /* (files) minimalist cache of alloc info */
- unsigned i_ea_size; /* size of extended attributes */
- unsigned i_ea_mode : 1; /* file's permission is stored in ea */
- unsigned i_ea_uid : 1; /* file's uid is stored in ea */
- unsigned i_ea_gid : 1; /* file's gid is stored in ea */
- unsigned i_dirty : 1;
- loff_t **i_rddir_off;
- struct inode vfs_inode;
-};
-
-struct hpfs_sb_info {
- struct mutex hpfs_mutex; /* global hpfs lock */
- ino_t sb_root; /* inode number of root dir */
- unsigned sb_fs_size; /* file system size, sectors */
- unsigned sb_bitmaps; /* sector number of bitmap list */
- unsigned sb_dirband_start; /* directory band start sector */
- unsigned sb_dirband_size; /* directory band size, dnodes */
- unsigned sb_dmap; /* sector number of dnode bit map */
- unsigned sb_n_free; /* free blocks for statfs, or -1 */
- unsigned sb_n_free_dnodes; /* free dnodes for statfs, or -1 */
- kuid_t sb_uid; /* uid from mount options */
- kgid_t sb_gid; /* gid from mount options */
- umode_t sb_mode; /* mode from mount options */
- unsigned sb_eas : 2; /* eas: 0-ignore, 1-ro, 2-rw */
- unsigned sb_err : 2; /* on errs: 0-cont, 1-ro, 2-panic */
- unsigned sb_chk : 2; /* checks: 0-no, 1-normal, 2-strict */
- unsigned sb_lowercase : 1; /* downcase filenames hackery */
- unsigned sb_was_error : 1; /* there was an error, set dirty flag */
- unsigned sb_chkdsk : 2; /* chkdsk: 0-no, 1-on errs, 2-allways */
- unsigned char *sb_cp_table; /* code page tables: */
- /* 128 bytes uppercasing table & */
- /* 128 bytes lowercasing table */
- __le32 *sb_bmp_dir; /* main bitmap directory */
- unsigned sb_c_bitmap; /* current bitmap */
- unsigned sb_max_fwd_alloc; /* max forwad allocation */
- int sb_timeshift;
- struct rcu_head rcu;
-
- unsigned n_hotfixes;
- secno hotfix_from[256];
- secno hotfix_to[256];
-};
-
-/* Four 512-byte buffers and the 2k block obtained by concatenating them */
-
-struct quad_buffer_head {
- struct buffer_head *bh[4];
- void *data;
-};
-
-/* The b-tree down pointer from a dir entry */
-
-static inline dnode_secno de_down_pointer (struct hpfs_dirent *de)
-{
- CHKCOND(de->down,("HPFS: de_down_pointer: !de->down\n"));
- return le32_to_cpu(*(__le32 *) ((void *) de + le16_to_cpu(de->length) - 4));
-}
-
-/* The first dir entry in a dnode */
-
-static inline struct hpfs_dirent *dnode_first_de (struct dnode *dnode)
-{
- return (void *) dnode->dirent;
-}
-
-/* The end+1 of the dir entries */
-
-static inline struct hpfs_dirent *dnode_end_de (struct dnode *dnode)
-{
- CHKCOND(le32_to_cpu(dnode->first_free)>=0x14 && le32_to_cpu(dnode->first_free)<=0xa00,("HPFS: dnode_end_de: dnode->first_free = %x\n",(unsigned)le32_to_cpu(dnode->first_free)));
- return (void *) dnode + le32_to_cpu(dnode->first_free);
-}
-
-/* The dir entry after dir entry de */
-
-static inline struct hpfs_dirent *de_next_de (struct hpfs_dirent *de)
-{
- CHKCOND(le16_to_cpu(de->length)>=0x20 && le16_to_cpu(de->length)<0x800,("HPFS: de_next_de: de->length = %x\n",(unsigned)le16_to_cpu(de->length)));
- return (void *) de + le16_to_cpu(de->length);
-}
-
-static inline struct extended_attribute *fnode_ea(struct fnode *fnode)
-{
- return (struct extended_attribute *)((char *)fnode + le16_to_cpu(fnode->ea_offs) + le16_to_cpu(fnode->acl_size_s));
-}
-
-static inline struct extended_attribute *fnode_end_ea(struct fnode *fnode)
-{
- return (struct extended_attribute *)((char *)fnode + le16_to_cpu(fnode->ea_offs) + le16_to_cpu(fnode->acl_size_s) + le16_to_cpu(fnode->ea_size_s));
-}
-
-static unsigned ea_valuelen(struct extended_attribute *ea)
-{
- return ea->valuelen_lo + 256 * ea->valuelen_hi;
-}
-
-static inline struct extended_attribute *next_ea(struct extended_attribute *ea)
-{
- return (struct extended_attribute *)((char *)ea + 5 + ea->namelen + ea_valuelen(ea));
-}
-
-static inline secno ea_sec(struct extended_attribute *ea)
-{
- return le32_to_cpu(get_unaligned((__le32 *)((char *)ea + 9 + ea->namelen)));
-}
-
-static inline secno ea_len(struct extended_attribute *ea)
-{
- return le32_to_cpu(get_unaligned((__le32 *)((char *)ea + 5 + ea->namelen)));
-}
-
-static inline char *ea_data(struct extended_attribute *ea)
-{
- return (char *)((char *)ea + 5 + ea->namelen);
-}
-
-static inline unsigned de_size(int namelen, secno down_ptr)
-{
- return ((0x1f + namelen + 3) & ~3) + (down_ptr ? 4 : 0);
-}
-
-static inline void copy_de(struct hpfs_dirent *dst, struct hpfs_dirent *src)
-{
- int a;
- int n;
- if (!dst || !src) return;
- a = dst->down;
- n = dst->not_8x3;
- memcpy((char *)dst + 2, (char *)src + 2, 28);
- dst->down = a;
- dst->not_8x3 = n;
-}
-
-static inline unsigned tstbits(__le32 *bmp, unsigned b, unsigned n)
-{
- int i;
- if ((b >= 0x4000) || (b + n - 1 >= 0x4000)) return n;
- if (!((le32_to_cpu(bmp[(b & 0x3fff) >> 5]) >> (b & 0x1f)) & 1)) return 1;
- for (i = 1; i < n; i++)
- if (!((le32_to_cpu(bmp[((b+i) & 0x3fff) >> 5]) >> ((b+i) & 0x1f)) & 1))
- return i + 1;
- return 0;
-}
-
-/* alloc.c */
-
-int hpfs_chk_sectors(struct super_block *, secno, int, char *);
-secno hpfs_alloc_sector(struct super_block *, secno, unsigned, int);
-int hpfs_alloc_if_possible(struct super_block *, secno);
-void hpfs_free_sectors(struct super_block *, secno, unsigned);
-int hpfs_check_free_dnodes(struct super_block *, int);
-void hpfs_free_dnode(struct super_block *, secno);
-struct dnode *hpfs_alloc_dnode(struct super_block *, secno, dnode_secno *, struct quad_buffer_head *);
-struct fnode *hpfs_alloc_fnode(struct super_block *, secno, fnode_secno *, struct buffer_head **);
-struct anode *hpfs_alloc_anode(struct super_block *, secno, anode_secno *, struct buffer_head **);
-int hpfs_trim_fs(struct super_block *, u64, u64, u64, unsigned *);
-
-/* anode.c */
-
-secno hpfs_bplus_lookup(struct super_block *, struct inode *, struct bplus_header *, unsigned, struct buffer_head *);
-secno hpfs_add_sector_to_btree(struct super_block *, secno, int, unsigned);
-void hpfs_remove_btree(struct super_block *, struct bplus_header *);
-int hpfs_ea_read(struct super_block *, secno, int, unsigned, unsigned, char *);
-int hpfs_ea_write(struct super_block *, secno, int, unsigned, unsigned, const char *);
-void hpfs_ea_remove(struct super_block *, secno, int, unsigned);
-void hpfs_truncate_btree(struct super_block *, secno, int, unsigned);
-void hpfs_remove_fnode(struct super_block *, fnode_secno fno);
-
-/* buffer.c */
-
-secno hpfs_search_hotfix_map(struct super_block *s, secno sec);
-unsigned hpfs_search_hotfix_map_for_range(struct super_block *s, secno sec, unsigned n);
-void hpfs_prefetch_sectors(struct super_block *, unsigned, int);
-void *hpfs_map_sector(struct super_block *, unsigned, struct buffer_head **, int);
-void *hpfs_get_sector(struct super_block *, unsigned, struct buffer_head **);
-void *hpfs_map_4sectors(struct super_block *, unsigned, struct quad_buffer_head *, int);
-void *hpfs_get_4sectors(struct super_block *, unsigned, struct quad_buffer_head *);
-void hpfs_brelse4(struct quad_buffer_head *);
-void hpfs_mark_4buffers_dirty(struct quad_buffer_head *);
-
-/* dentry.c */
-
-extern const struct dentry_operations hpfs_dentry_operations;
-
-/* dir.c */
-
-struct dentry *hpfs_lookup(struct inode *, struct dentry *, unsigned int);
-extern const struct file_operations hpfs_dir_ops;
-
-/* dnode.c */
-
-int hpfs_add_pos(struct inode *, loff_t *);
-void hpfs_del_pos(struct inode *, loff_t *);
-struct hpfs_dirent *hpfs_add_de(struct super_block *, struct dnode *,
- const unsigned char *, unsigned, secno);
-int hpfs_add_dirent(struct inode *, const unsigned char *, unsigned,
- struct hpfs_dirent *);
-int hpfs_remove_dirent(struct inode *, dnode_secno, struct hpfs_dirent *, struct quad_buffer_head *, int);
-void hpfs_count_dnodes(struct super_block *, dnode_secno, int *, int *, int *);
-dnode_secno hpfs_de_as_down_as_possible(struct super_block *, dnode_secno dno);
-struct hpfs_dirent *map_pos_dirent(struct inode *, loff_t *, struct quad_buffer_head *);
-struct hpfs_dirent *map_dirent(struct inode *, dnode_secno,
- const unsigned char *, unsigned, dnode_secno *,
- struct quad_buffer_head *);
-void hpfs_remove_dtree(struct super_block *, dnode_secno);
-struct hpfs_dirent *map_fnode_dirent(struct super_block *, fnode_secno, struct fnode *, struct quad_buffer_head *);
-
-/* ea.c */
-
-void hpfs_ea_ext_remove(struct super_block *, secno, int, unsigned);
-int hpfs_read_ea(struct super_block *, struct fnode *, char *, char *, int);
-char *hpfs_get_ea(struct super_block *, struct fnode *, char *, int *);
-void hpfs_set_ea(struct inode *, struct fnode *, const char *,
- const char *, int);
-
-/* file.c */
-
-int hpfs_file_fsync(struct file *, loff_t, loff_t, int);
-void hpfs_truncate(struct inode *);
-extern const struct file_operations hpfs_file_ops;
-extern const struct inode_operations hpfs_file_iops;
-extern const struct address_space_operations hpfs_aops;
-
-/* inode.c */
-
-void hpfs_init_inode(struct inode *);
-void hpfs_read_inode(struct inode *);
-void hpfs_write_inode(struct inode *);
-void hpfs_write_inode_nolock(struct inode *);
-int hpfs_setattr(const struct mnt_idmap *, struct dentry *, struct iattr *);
-void hpfs_write_if_changed(struct inode *);
-void hpfs_evict_inode(struct inode *);
-
-/* map.c */
-
-__le32 *hpfs_map_dnode_bitmap(struct super_block *, struct quad_buffer_head *);
-__le32 *hpfs_map_bitmap(struct super_block *, unsigned, struct quad_buffer_head *, char *);
-void hpfs_prefetch_bitmap(struct super_block *, unsigned);
-unsigned char *hpfs_load_code_page(struct super_block *, secno);
-__le32 *hpfs_load_bitmap_directory(struct super_block *, secno bmp);
-void hpfs_load_hotfix_map(struct super_block *s, struct hpfs_spare_block *spareblock);
-struct fnode *hpfs_map_fnode(struct super_block *s, ino_t, struct buffer_head **);
-struct anode *hpfs_map_anode(struct super_block *s, anode_secno, struct buffer_head **);
-struct dnode *hpfs_map_dnode(struct super_block *s, dnode_secno, struct quad_buffer_head *);
-dnode_secno hpfs_fnode_dno(struct super_block *s, ino_t ino);
-
-/* name.c */
-
-unsigned char hpfs_upcase(unsigned char *, unsigned char);
-int hpfs_chk_name(const unsigned char *, unsigned *);
-unsigned char *hpfs_translate_name(struct super_block *, unsigned char *, unsigned, int, int);
-int hpfs_compare_names(struct super_block *, const unsigned char *, unsigned,
- const unsigned char *, unsigned, int);
-int hpfs_is_name_long(const unsigned char *, unsigned);
-void hpfs_adjust_length(const unsigned char *, unsigned *);
-
-/* namei.c */
-
-extern const struct inode_operations hpfs_dir_iops;
-extern const struct address_space_operations hpfs_symlink_aops;
-
-static inline struct hpfs_inode_info *hpfs_i(struct inode *inode)
-{
- return container_of(inode, struct hpfs_inode_info, vfs_inode);
-}
-
-static inline struct hpfs_sb_info *hpfs_sb(struct super_block *sb)
-{
- return sb->s_fs_info;
-}
-
-/* super.c */
-
-__printf(2, 3)
-void hpfs_error(struct super_block *, const char *, ...);
-int hpfs_stop_cycles(struct super_block *, int, int *, int *, char *);
-unsigned hpfs_get_free_dnodes(struct super_block *);
-long hpfs_ioctl(struct file *file, unsigned cmd, unsigned long arg);
-
-/*
- * local time (HPFS) to GMT (Unix)
- */
-
-static inline time64_t local_to_gmt(struct super_block *s, time64_t t)
-{
- extern struct timezone sys_tz;
- return t + sys_tz.tz_minuteswest * 60 + hpfs_sb(s)->sb_timeshift;
-}
-
-static inline time32_t gmt_to_local(struct super_block *s, time64_t t)
-{
- extern struct timezone sys_tz;
- return t - sys_tz.tz_minuteswest * 60 - hpfs_sb(s)->sb_timeshift;
-}
-
-static inline time32_t local_get_seconds(struct super_block *s)
-{
- return gmt_to_local(s, ktime_get_real_seconds());
-}
-
-/*
- * Locking:
- *
- * hpfs_lock() locks the whole filesystem. It must be taken
- * on any method called by the VFS.
- *
- * We don't do any per-file locking anymore, it is hard to
- * review and HPFS is not performance-sensitive anyway.
- */
-static inline void hpfs_lock(struct super_block *s)
-{
- struct hpfs_sb_info *sbi = hpfs_sb(s);
- mutex_lock(&sbi->hpfs_mutex);
-}
-
-static inline void hpfs_unlock(struct super_block *s)
-{
- struct hpfs_sb_info *sbi = hpfs_sb(s);
- mutex_unlock(&sbi->hpfs_mutex);
-}
-
-static inline void hpfs_lock_assert(struct super_block *s)
-{
- struct hpfs_sb_info *sbi = hpfs_sb(s);
- WARN_ON(!mutex_is_locked(&sbi->hpfs_mutex));
-}
diff --git a/fs/hpfs/inode.c b/fs/hpfs/inode.c
deleted file mode 100644
index 396773d0b669..000000000000
--- a/fs/hpfs/inode.c
+++ /dev/null
@@ -1,318 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * linux/fs/hpfs/inode.c
- *
- * Mikulas Patocka (mikulas@artax.karlin.mff.cuni.cz), 1998-1999
- *
- * inode VFS functions
- */
-
-#include <linux/slab.h>
-#include <linux/user_namespace.h>
-#include "hpfs_fn.h"
-
-void hpfs_init_inode(struct inode *i)
-{
- struct super_block *sb = i->i_sb;
- struct hpfs_inode_info *hpfs_inode = hpfs_i(i);
-
- i->i_uid = hpfs_sb(sb)->sb_uid;
- i->i_gid = hpfs_sb(sb)->sb_gid;
- i->i_mode = hpfs_sb(sb)->sb_mode;
- i->i_size = -1;
- i->i_blocks = -1;
-
- hpfs_inode->i_dno = 0;
- hpfs_inode->i_n_secs = 0;
- hpfs_inode->i_file_sec = 0;
- hpfs_inode->i_disk_sec = 0;
- hpfs_inode->i_dpos = 0;
- hpfs_inode->i_dsubdno = 0;
- hpfs_inode->i_ea_mode = 0;
- hpfs_inode->i_ea_uid = 0;
- hpfs_inode->i_ea_gid = 0;
- hpfs_inode->i_ea_size = 0;
-
- hpfs_inode->i_rddir_off = NULL;
- hpfs_inode->i_dirty = 0;
-
- inode_set_ctime(i, 0, 0);
- inode_set_mtime(i, 0, 0);
- inode_set_atime(i, 0, 0);
-}
-
-void hpfs_read_inode(struct inode *i)
-{
- struct buffer_head *bh;
- struct fnode *fnode;
- struct super_block *sb = i->i_sb;
- struct hpfs_inode_info *hpfs_inode = hpfs_i(i);
- void *ea;
- int ea_size;
-
- if (!(fnode = hpfs_map_fnode(sb, i->i_ino, &bh))) {
- /*i->i_mode |= S_IFREG;
- i->i_mode &= ~0111;
- i->i_op = &hpfs_file_iops;
- i->i_fop = &hpfs_file_ops;
- clear_nlink(i);*/
- make_bad_inode(i);
- return;
- }
- if (hpfs_sb(i->i_sb)->sb_eas) {
- if ((ea = hpfs_get_ea(i->i_sb, fnode, "UID", &ea_size))) {
- if (ea_size == 2) {
- i_uid_write(i, le16_to_cpu(*(__le16*)ea));
- hpfs_inode->i_ea_uid = 1;
- }
- kfree(ea);
- }
- if ((ea = hpfs_get_ea(i->i_sb, fnode, "GID", &ea_size))) {
- if (ea_size == 2) {
- i_gid_write(i, le16_to_cpu(*(__le16*)ea));
- hpfs_inode->i_ea_gid = 1;
- }
- kfree(ea);
- }
- if ((ea = hpfs_get_ea(i->i_sb, fnode, "SYMLINK", &ea_size))) {
- kfree(ea);
- i->i_mode = S_IFLNK | 0777;
- i->i_op = &page_symlink_inode_operations;
- inode_nohighmem(i);
- i->i_data.a_ops = &hpfs_symlink_aops;
- set_nlink(i, 1);
- i->i_size = ea_size;
- i->i_blocks = 1;
- brelse(bh);
- return;
- }
- if ((ea = hpfs_get_ea(i->i_sb, fnode, "MODE", &ea_size))) {
- int rdev = 0;
- umode_t mode = hpfs_sb(sb)->sb_mode;
- if (ea_size == 2) {
- mode = le16_to_cpu(*(__le16*)ea);
- hpfs_inode->i_ea_mode = 1;
- }
- kfree(ea);
- i->i_mode = mode;
- if (S_ISBLK(mode) || S_ISCHR(mode)) {
- if ((ea = hpfs_get_ea(i->i_sb, fnode, "DEV", &ea_size))) {
- if (ea_size == 4)
- rdev = le32_to_cpu(*(__le32*)ea);
- kfree(ea);
- }
- }
- if (S_ISBLK(mode) || S_ISCHR(mode) || S_ISFIFO(mode) || S_ISSOCK(mode)) {
- brelse(bh);
- set_nlink(i, 1);
- i->i_size = 0;
- i->i_blocks = 1;
- init_special_inode(i, mode,
- new_decode_dev(rdev));
- return;
- }
- }
- }
- if (fnode_is_dir(fnode)) {
- int n_dnodes, n_subdirs;
- i->i_mode |= S_IFDIR;
- i->i_op = &hpfs_dir_iops;
- i->i_fop = &hpfs_dir_ops;
- hpfs_inode->i_parent_dir = le32_to_cpu(fnode->up);
- hpfs_inode->i_dno = le32_to_cpu(fnode->u.external[0].disk_secno);
- if (hpfs_sb(sb)->sb_chk >= 2) {
- struct buffer_head *bh0;
- if (hpfs_map_fnode(sb, hpfs_inode->i_parent_dir, &bh0)) brelse(bh0);
- }
- n_dnodes = 0; n_subdirs = 0;
- hpfs_count_dnodes(i->i_sb, hpfs_inode->i_dno, &n_dnodes, &n_subdirs, NULL);
- i->i_blocks = 4 * n_dnodes;
- i->i_size = 2048 * n_dnodes;
- set_nlink(i, 2 + n_subdirs);
- } else {
- i->i_mode |= S_IFREG;
- if (!hpfs_inode->i_ea_mode) i->i_mode &= ~0111;
- i->i_op = &hpfs_file_iops;
- i->i_fop = &hpfs_file_ops;
- set_nlink(i, 1);
- i->i_size = le32_to_cpu(fnode->file_size);
- i->i_blocks = ((i->i_size + 511) >> 9) + 1;
- i->i_data.a_ops = &hpfs_aops;
- hpfs_i(i)->mmu_private = i->i_size;
- }
- brelse(bh);
-}
-
-static void hpfs_write_inode_ea(struct inode *i, struct fnode *fnode)
-{
- struct hpfs_inode_info *hpfs_inode = hpfs_i(i);
- /*if (le32_to_cpu(fnode->acl_size_l) || le16_to_cpu(fnode->acl_size_s)) {
- Some unknown structures like ACL may be in fnode,
- we'd better not overwrite them
- hpfs_error(i->i_sb, "fnode %08x has some unknown HPFS386 structures", i->i_ino);
- } else*/ if (hpfs_sb(i->i_sb)->sb_eas >= 2) {
- __le32 ea;
- if (!uid_eq(i->i_uid, hpfs_sb(i->i_sb)->sb_uid) || hpfs_inode->i_ea_uid) {
- ea = cpu_to_le32(i_uid_read(i));
- hpfs_set_ea(i, fnode, "UID", (char*)&ea, 2);
- hpfs_inode->i_ea_uid = 1;
- }
- if (!gid_eq(i->i_gid, hpfs_sb(i->i_sb)->sb_gid) || hpfs_inode->i_ea_gid) {
- ea = cpu_to_le32(i_gid_read(i));
- hpfs_set_ea(i, fnode, "GID", (char *)&ea, 2);
- hpfs_inode->i_ea_gid = 1;
- }
- if (!S_ISLNK(i->i_mode))
- if ((i->i_mode != ((hpfs_sb(i->i_sb)->sb_mode & ~(S_ISDIR(i->i_mode) ? 0 : 0111))
- | (S_ISDIR(i->i_mode) ? S_IFDIR : S_IFREG))
- && i->i_mode != ((hpfs_sb(i->i_sb)->sb_mode & ~(S_ISDIR(i->i_mode) ? 0222 : 0333))
- | (S_ISDIR(i->i_mode) ? S_IFDIR : S_IFREG))) || hpfs_inode->i_ea_mode) {
- ea = cpu_to_le32(i->i_mode);
- /* sick, but legal */
- hpfs_set_ea(i, fnode, "MODE", (char *)&ea, 2);
- hpfs_inode->i_ea_mode = 1;
- }
- if (S_ISBLK(i->i_mode) || S_ISCHR(i->i_mode)) {
- ea = cpu_to_le32(new_encode_dev(i->i_rdev));
- hpfs_set_ea(i, fnode, "DEV", (char *)&ea, 4);
- }
- }
-}
-
-void hpfs_write_inode(struct inode *i)
-{
- struct hpfs_inode_info *hpfs_inode = hpfs_i(i);
- struct inode *parent;
- if (i->i_ino == hpfs_sb(i->i_sb)->sb_root) return;
- if (hpfs_inode->i_rddir_off && !icount_read_once(i)) {
- if (*hpfs_inode->i_rddir_off)
- pr_err("write_inode: some position still there\n");
- kfree(hpfs_inode->i_rddir_off);
- hpfs_inode->i_rddir_off = NULL;
- }
- if (!i->i_nlink) {
- return;
- }
- parent = iget_locked(i->i_sb, hpfs_inode->i_parent_dir);
- if (parent) {
- hpfs_inode->i_dirty = 0;
- if (inode_state_read_once(parent) & I_NEW) {
- hpfs_init_inode(parent);
- hpfs_read_inode(parent);
- unlock_new_inode(parent);
- }
- hpfs_write_inode_nolock(i);
- iput(parent);
- }
-}
-
-void hpfs_write_inode_nolock(struct inode *i)
-{
- struct hpfs_inode_info *hpfs_inode = hpfs_i(i);
- struct buffer_head *bh;
- struct fnode *fnode;
- struct quad_buffer_head qbh;
- struct hpfs_dirent *de;
- if (i->i_ino == hpfs_sb(i->i_sb)->sb_root) return;
- if (!(fnode = hpfs_map_fnode(i->i_sb, i->i_ino, &bh))) return;
- if (i->i_ino != hpfs_sb(i->i_sb)->sb_root && i->i_nlink) {
- if (!(de = map_fnode_dirent(i->i_sb, i->i_ino, fnode, &qbh))) {
- brelse(bh);
- return;
- }
- } else de = NULL;
- if (S_ISREG(i->i_mode)) {
- fnode->file_size = cpu_to_le32(i->i_size);
- if (de) de->file_size = cpu_to_le32(i->i_size);
- } else if (S_ISDIR(i->i_mode)) {
- fnode->file_size = cpu_to_le32(0);
- if (de) de->file_size = cpu_to_le32(0);
- }
- hpfs_write_inode_ea(i, fnode);
- if (de) {
- de->write_date = cpu_to_le32(gmt_to_local(i->i_sb, inode_get_mtime_sec(i)));
- de->read_date = cpu_to_le32(gmt_to_local(i->i_sb, inode_get_atime_sec(i)));
- de->creation_date = cpu_to_le32(gmt_to_local(i->i_sb, inode_get_ctime_sec(i)));
- de->read_only = !(i->i_mode & 0222);
- de->ea_size = cpu_to_le32(hpfs_inode->i_ea_size);
- hpfs_mark_4buffers_dirty(&qbh);
- hpfs_brelse4(&qbh);
- }
- if (S_ISDIR(i->i_mode)) {
- if ((de = map_dirent(i, hpfs_inode->i_dno, "\001\001", 2, NULL, &qbh))) {
- de->write_date = cpu_to_le32(gmt_to_local(i->i_sb, inode_get_mtime_sec(i)));
- de->read_date = cpu_to_le32(gmt_to_local(i->i_sb, inode_get_atime_sec(i)));
- de->creation_date = cpu_to_le32(gmt_to_local(i->i_sb, inode_get_ctime_sec(i)));
- de->read_only = !(i->i_mode & 0222);
- de->ea_size = cpu_to_le32(/*hpfs_inode->i_ea_size*/0);
- de->file_size = cpu_to_le32(0);
- hpfs_mark_4buffers_dirty(&qbh);
- hpfs_brelse4(&qbh);
- } else
- hpfs_error(i->i_sb,
- "directory %08llx doesn't have '.' entry",
- i->i_ino);
- }
- mark_buffer_dirty(bh);
- brelse(bh);
-}
-
-int hpfs_setattr(const struct mnt_idmap *idmap, struct dentry *dentry,
- struct iattr *attr)
-{
- struct inode *inode = d_inode(dentry);
- int error = -EINVAL;
-
- hpfs_lock(inode->i_sb);
- if (inode->i_ino == hpfs_sb(inode->i_sb)->sb_root)
- goto out_unlock;
- if ((attr->ia_valid & ATTR_UID) &&
- from_kuid(&init_user_ns, attr->ia_uid) >= 0x10000)
- goto out_unlock;
- if ((attr->ia_valid & ATTR_GID) &&
- from_kgid(&init_user_ns, attr->ia_gid) >= 0x10000)
- goto out_unlock;
- if ((attr->ia_valid & ATTR_SIZE) && attr->ia_size > inode->i_size)
- goto out_unlock;
-
- error = setattr_prepare(&nop_mnt_idmap, dentry, attr);
- if (error)
- goto out_unlock;
-
- if ((attr->ia_valid & ATTR_SIZE) &&
- attr->ia_size != i_size_read(inode)) {
- error = inode_newsize_ok(inode, attr->ia_size);
- if (error)
- goto out_unlock;
-
- truncate_setsize(inode, attr->ia_size);
- hpfs_truncate(inode);
- }
-
- setattr_copy(&nop_mnt_idmap, inode, attr);
-
- hpfs_write_inode(inode);
-
- out_unlock:
- hpfs_unlock(inode->i_sb);
- return error;
-}
-
-void hpfs_write_if_changed(struct inode *inode)
-{
- struct hpfs_inode_info *hpfs_inode = hpfs_i(inode);
-
- if (hpfs_inode->i_dirty)
- hpfs_write_inode(inode);
-}
-
-void hpfs_evict_inode(struct inode *inode)
-{
- truncate_inode_pages_final(&inode->i_data);
- clear_inode(inode);
- if (!inode->i_nlink) {
- hpfs_lock(inode->i_sb);
- hpfs_remove_fnode(inode->i_sb, inode->i_ino);
- hpfs_unlock(inode->i_sb);
- }
-}
diff --git a/fs/hpfs/map.c b/fs/hpfs/map.c
deleted file mode 100644
index be73233502f8..000000000000
--- a/fs/hpfs/map.c
+++ /dev/null
@@ -1,335 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * linux/fs/hpfs/map.c
- *
- * Mikulas Patocka (mikulas@artax.karlin.mff.cuni.cz), 1998-1999
- *
- * mapping structures to memory with some minimal checks
- */
-
-#include "hpfs_fn.h"
-
-__le32 *hpfs_map_dnode_bitmap(struct super_block *s, struct quad_buffer_head *qbh)
-{
- return hpfs_map_4sectors(s, hpfs_sb(s)->sb_dmap, qbh, 0);
-}
-
-__le32 *hpfs_map_bitmap(struct super_block *s, unsigned bmp_block,
- struct quad_buffer_head *qbh, char *id)
-{
- secno sec;
- __le32 *ret;
- unsigned n_bands = (hpfs_sb(s)->sb_fs_size + 0x3fff) >> 14;
- if (hpfs_sb(s)->sb_chk) if (bmp_block >= n_bands) {
- hpfs_error(s, "hpfs_map_bitmap called with bad parameter: %08x at %s", bmp_block, id);
- return NULL;
- }
- sec = le32_to_cpu(hpfs_sb(s)->sb_bmp_dir[bmp_block]);
- if (!sec || sec > hpfs_sb(s)->sb_fs_size-4) {
- hpfs_error(s, "invalid bitmap block pointer %08x -> %08x at %s", bmp_block, sec, id);
- return NULL;
- }
- ret = hpfs_map_4sectors(s, sec, qbh, 4);
- if (ret) hpfs_prefetch_bitmap(s, bmp_block + 1);
- return ret;
-}
-
-void hpfs_prefetch_bitmap(struct super_block *s, unsigned bmp_block)
-{
- unsigned to_prefetch, next_prefetch;
- unsigned n_bands = (hpfs_sb(s)->sb_fs_size + 0x3fff) >> 14;
- if (unlikely(bmp_block >= n_bands))
- return;
- to_prefetch = le32_to_cpu(hpfs_sb(s)->sb_bmp_dir[bmp_block]);
- if (unlikely(bmp_block + 1 >= n_bands))
- next_prefetch = 0;
- else
- next_prefetch = le32_to_cpu(hpfs_sb(s)->sb_bmp_dir[bmp_block + 1]);
- hpfs_prefetch_sectors(s, to_prefetch, 4 + 4 * (to_prefetch + 4 == next_prefetch));
-}
-
-/*
- * Load first code page into kernel memory, return pointer to 256-byte array,
- * first 128 bytes are uppercasing table for chars 128-255, next 128 bytes are
- * lowercasing table
- */
-
-unsigned char *hpfs_load_code_page(struct super_block *s, secno cps)
-{
- struct buffer_head *bh;
- secno cpds;
- unsigned cpi;
- unsigned char *ptr;
- unsigned char *cp_table;
- int i;
- struct code_page_data *cpd;
- struct code_page_directory *cp = hpfs_map_sector(s, cps, &bh, 0);
- if (!cp) return NULL;
- if (le32_to_cpu(cp->magic) != CP_DIR_MAGIC) {
- pr_err("Code page directory magic doesn't match (magic = %08x)\n",
- le32_to_cpu(cp->magic));
- brelse(bh);
- return NULL;
- }
- if (!le32_to_cpu(cp->n_code_pages)) {
- pr_err("n_code_pages == 0\n");
- brelse(bh);
- return NULL;
- }
- cpds = le32_to_cpu(cp->array[0].code_page_data);
- cpi = le16_to_cpu(cp->array[0].index);
- brelse(bh);
-
- if (cpi >= 3) {
- pr_err("Code page index out of array\n");
- return NULL;
- }
-
- if (!(cpd = hpfs_map_sector(s, cpds, &bh, 0))) return NULL;
- if (le16_to_cpu(cpd->offs[cpi]) > 0x178) {
- pr_err("Code page index out of sector\n");
- brelse(bh);
- return NULL;
- }
- ptr = (unsigned char *)cpd + le16_to_cpu(cpd->offs[cpi]) + 6;
- if (!(cp_table = kmalloc(256, GFP_KERNEL))) {
- pr_err("out of memory for code page table\n");
- brelse(bh);
- return NULL;
- }
- memcpy(cp_table, ptr, 128);
- brelse(bh);
-
- /* Try to build lowercasing table from uppercasing one */
-
- for (i=128; i<256; i++) cp_table[i]=i;
- for (i=128; i<256; i++) if (cp_table[i-128]!=i && cp_table[i-128]>=128)
- cp_table[cp_table[i-128]] = i;
-
- return cp_table;
-}
-
-__le32 *hpfs_load_bitmap_directory(struct super_block *s, secno bmp)
-{
- struct buffer_head *bh;
- int n = (hpfs_sb(s)->sb_fs_size + 0x200000 - 1) >> 21;
- int i;
- __le32 *b;
- if (!(b = kmalloc_array(n, 512, GFP_KERNEL))) {
- pr_err("can't allocate memory for bitmap directory\n");
- return NULL;
- }
- for (i=0;i<n;i++) {
- __le32 *d = hpfs_map_sector(s, bmp+i, &bh, n - i - 1);
- if (!d) {
- kfree(b);
- return NULL;
- }
- memcpy((char *)b + 512 * i, d, 512);
- brelse(bh);
- }
- return b;
-}
-
-void hpfs_load_hotfix_map(struct super_block *s, struct hpfs_spare_block *spareblock)
-{
- struct quad_buffer_head qbh;
- __le32 *directory;
- u32 n_hotfixes, n_used_hotfixes;
- unsigned i;
-
- n_hotfixes = le32_to_cpu(spareblock->n_spares);
- n_used_hotfixes = le32_to_cpu(spareblock->n_spares_used);
-
- if (n_hotfixes > 256 || n_used_hotfixes > n_hotfixes) {
- hpfs_error(s, "invalid number of hotfixes: %u, used: %u", n_hotfixes, n_used_hotfixes);
- return;
- }
- if (!(directory = hpfs_map_4sectors(s, le32_to_cpu(spareblock->hotfix_map), &qbh, 0))) {
- hpfs_error(s, "can't load hotfix map");
- return;
- }
- for (i = 0; i < n_used_hotfixes; i++) {
- hpfs_sb(s)->hotfix_from[i] = le32_to_cpu(directory[i]);
- hpfs_sb(s)->hotfix_to[i] = le32_to_cpu(directory[n_hotfixes + i]);
- }
- hpfs_sb(s)->n_hotfixes = n_used_hotfixes;
- hpfs_brelse4(&qbh);
-}
-
-/*
- * Load fnode to memory
- */
-
-struct fnode *hpfs_map_fnode(struct super_block *s, ino_t ino, struct buffer_head **bhp)
-{
- struct fnode *fnode;
- if (hpfs_sb(s)->sb_chk) if (hpfs_chk_sectors(s, ino, 1, "fnode")) {
- return NULL;
- }
- if ((fnode = hpfs_map_sector(s, ino, bhp, FNODE_RD_AHEAD))) {
- if (hpfs_sb(s)->sb_chk) {
- struct extended_attribute *ea;
- struct extended_attribute *ea_end;
- if (le32_to_cpu(fnode->magic) != FNODE_MAGIC) {
- hpfs_error(s, "bad magic on fnode %08lx",
- (unsigned long)ino);
- goto bail;
- }
- if (!fnode_is_dir(fnode)) {
- if ((unsigned)fnode->btree.n_used_nodes + (unsigned)fnode->btree.n_free_nodes !=
- (bp_internal(GET_BTREE_PTR(&fnode->btree)) ? 12 : 8)) {
- hpfs_error(s,
- "bad number of nodes in fnode %08lx",
- (unsigned long)ino);
- goto bail;
- }
- if (le16_to_cpu(fnode->btree.first_free) !=
- 8 + fnode->btree.n_used_nodes * (bp_internal(GET_BTREE_PTR(&fnode->btree)) ? 8 : 12)) {
- hpfs_error(s,
- "bad first_free pointer in fnode %08lx",
- (unsigned long)ino);
- goto bail;
- }
- }
- if (le16_to_cpu(fnode->ea_size_s) && (le16_to_cpu(fnode->ea_offs) < 0xc4 ||
- le16_to_cpu(fnode->ea_offs) + le16_to_cpu(fnode->acl_size_s) + le16_to_cpu(fnode->ea_size_s) > 0x200)) {
- hpfs_error(s,
- "bad EA info in fnode %08lx: ea_offs == %04x ea_size_s == %04x",
- (unsigned long)ino,
- le16_to_cpu(fnode->ea_offs), le16_to_cpu(fnode->ea_size_s));
- goto bail;
- }
- ea = fnode_ea(fnode);
- ea_end = fnode_end_ea(fnode);
- while (ea != ea_end) {
- if (ea > ea_end) {
- hpfs_error(s, "bad EA in fnode %08lx",
- (unsigned long)ino);
- goto bail;
- }
- ea = next_ea(ea);
- }
- }
- }
- return fnode;
- bail:
- brelse(*bhp);
- return NULL;
-}
-
-struct anode *hpfs_map_anode(struct super_block *s, anode_secno ano, struct buffer_head **bhp)
-{
- struct anode *anode;
- if (hpfs_sb(s)->sb_chk) if (hpfs_chk_sectors(s, ano, 1, "anode")) return NULL;
- if ((anode = hpfs_map_sector(s, ano, bhp, ANODE_RD_AHEAD)))
- if (hpfs_sb(s)->sb_chk) {
- if (le32_to_cpu(anode->magic) != ANODE_MAGIC) {
- hpfs_error(s, "bad magic on anode %08x", ano);
- goto bail;
- }
- if (le32_to_cpu(anode->self) != ano) {
- hpfs_error(s, "self pointer invalid on anode %08x", ano);
- goto bail;
- }
- if ((unsigned)anode->btree.n_used_nodes + (unsigned)anode->btree.n_free_nodes !=
- (bp_internal(GET_BTREE_PTR(&anode->btree)) ? 60 : 40)) {
- hpfs_error(s, "bad number of nodes in anode %08x", ano);
- goto bail;
- }
- if (le16_to_cpu(anode->btree.first_free) !=
- 8 + anode->btree.n_used_nodes * (bp_internal(GET_BTREE_PTR(&anode->btree)) ? 8 : 12)) {
- hpfs_error(s, "bad first_free pointer in anode %08x", ano);
- goto bail;
- }
- }
- return anode;
- bail:
- brelse(*bhp);
- return NULL;
-}
-
-/*
- * Load dnode to memory and do some checks
- */
-
-struct dnode *hpfs_map_dnode(struct super_block *s, unsigned secno,
- struct quad_buffer_head *qbh)
-{
- struct dnode *dnode;
- if (hpfs_sb(s)->sb_chk) {
- if (hpfs_chk_sectors(s, secno, 4, "dnode")) return NULL;
- if (secno & 3) {
- hpfs_error(s, "dnode %08x not byte-aligned", secno);
- return NULL;
- }
- }
- if ((dnode = hpfs_map_4sectors(s, secno, qbh, DNODE_RD_AHEAD)))
- if (hpfs_sb(s)->sb_chk) {
- unsigned p, pp = 0;
- unsigned char *d = (unsigned char *)dnode;
- int b = 0;
- if (le32_to_cpu(dnode->magic) != DNODE_MAGIC) {
- hpfs_error(s, "bad magic on dnode %08x", secno);
- goto bail;
- }
- if (le32_to_cpu(dnode->self) != secno)
- hpfs_error(s, "bad self pointer on dnode %08x self = %08x", secno, le32_to_cpu(dnode->self));
- /* Check dirents - bad dirents would cause infinite
- loops or shooting to memory */
- if (le32_to_cpu(dnode->first_free) > 2048) {
- hpfs_error(s, "dnode %08x has first_free == %08x", secno, le32_to_cpu(dnode->first_free));
- goto bail;
- }
- for (p = 20; p < le32_to_cpu(dnode->first_free); p += d[p] + (d[p+1] << 8)) {
- struct hpfs_dirent *de = (struct hpfs_dirent *)((char *)dnode + p);
- if (le16_to_cpu(de->length) > 292 || (le16_to_cpu(de->length) < 32) || (le16_to_cpu(de->length) & 3) || p + le16_to_cpu(de->length) > 2048) {
- hpfs_error(s, "bad dirent size in dnode %08x, dirent %03x, last %03x", secno, p, pp);
- goto bail;
- }
- if (((31 + de->namelen + de->down*4 + 3) & ~3) != le16_to_cpu(de->length)) {
- if (((31 + de->namelen + de->down*4 + 3) & ~3) < le16_to_cpu(de->length) && s->s_flags & SB_RDONLY) goto ok;
- hpfs_error(s, "namelen does not match dirent size in dnode %08x, dirent %03x, last %03x", secno, p, pp);
- goto bail;
- }
- ok:
- if (hpfs_sb(s)->sb_chk >= 2) b |= 1 << de->down;
- if (de->down) if (de_down_pointer(de) < 0x10) {
- hpfs_error(s, "bad down pointer in dnode %08x, dirent %03x, last %03x", secno, p, pp);
- goto bail;
- }
- pp = p;
-
- }
- if (p != le32_to_cpu(dnode->first_free)) {
- hpfs_error(s, "size on last dirent does not match first_free; dnode %08x", secno);
- goto bail;
- }
- if (d[pp + 30] != 1 || d[pp + 31] != 255) {
- hpfs_error(s, "dnode %08x does not end with \\377 entry", secno);
- goto bail;
- }
- if (b == 3)
- pr_err("unbalanced dnode tree, dnode %08x; see hpfs.txt 4 more info\n",
- secno);
- }
- return dnode;
- bail:
- hpfs_brelse4(qbh);
- return NULL;
-}
-
-dnode_secno hpfs_fnode_dno(struct super_block *s, ino_t ino)
-{
- struct buffer_head *bh;
- struct fnode *fnode;
- dnode_secno dno;
-
- fnode = hpfs_map_fnode(s, ino, &bh);
- if (!fnode)
- return 0;
-
- dno = le32_to_cpu(fnode->u.external[0].disk_secno);
- brelse(bh);
- return dno;
-}
diff --git a/fs/hpfs/name.c b/fs/hpfs/name.c
deleted file mode 100644
index ef7ba77f36b8..000000000000
--- a/fs/hpfs/name.c
+++ /dev/null
@@ -1,114 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * linux/fs/hpfs/name.c
- *
- * Mikulas Patocka (mikulas@artax.karlin.mff.cuni.cz), 1998-1999
- *
- * operations with filenames
- */
-
-#include "hpfs_fn.h"
-
-static inline int not_allowed_char(unsigned char c)
-{
- return c<' ' || c=='"' || c=='*' || c=='/' || c==':' || c=='<' ||
- c=='>' || c=='?' || c=='\\' || c=='|';
-}
-
-static inline int no_dos_char(unsigned char c)
-{ /* Characters that are allowed in HPFS but not in DOS */
- return c=='+' || c==',' || c==';' || c=='=' || c=='[' || c==']';
-}
-
-static inline unsigned char upcase(unsigned char *dir, unsigned char a)
-{
- if (a<128 || a==255) return a>='a' && a<='z' ? a - 0x20 : a;
- if (!dir) return a;
- return dir[a-128];
-}
-
-unsigned char hpfs_upcase(unsigned char *dir, unsigned char a)
-{
- return upcase(dir, a);
-}
-
-static inline unsigned char locase(unsigned char *dir, unsigned char a)
-{
- if (a<128 || a==255) return a>='A' && a<='Z' ? a + 0x20 : a;
- if (!dir) return a;
- return dir[a];
-}
-
-int hpfs_chk_name(const unsigned char *name, unsigned *len)
-{
- int i;
- if (*len > 254) return -ENAMETOOLONG;
- hpfs_adjust_length(name, len);
- if (!*len) return -EINVAL;
- for (i = 0; i < *len; i++) if (not_allowed_char(name[i])) return -EINVAL;
- if (*len == 1) if (name[0] == '.') return -EINVAL;
- if (*len == 2) if (name[0] == '.' && name[1] == '.') return -EINVAL;
- return 0;
-}
-
-unsigned char *hpfs_translate_name(struct super_block *s, unsigned char *from,
- unsigned len, int lc, int lng)
-{
- unsigned char *to;
- int i;
- if (hpfs_sb(s)->sb_chk >= 2) if (hpfs_is_name_long(from, len) != lng) {
- pr_err("Long name flag mismatch - name ");
- for (i = 0; i < len; i++)
- pr_cont("%c", from[i]);
- pr_cont(" misidentified as %s.\n", lng ? "short" : "long");
- pr_err("It's nothing serious. It could happen because of bug in OS/2.\nSet checks=normal to disable this message.\n");
- }
- if (!lc) return from;
- if (!(to = kmalloc(len, GFP_KERNEL))) {
- pr_err("can't allocate memory for name conversion buffer\n");
- return from;
- }
- for (i = 0; i < len; i++) to[i] = locase(hpfs_sb(s)->sb_cp_table,from[i]);
- return to;
-}
-
-int hpfs_compare_names(struct super_block *s,
- const unsigned char *n1, unsigned l1,
- const unsigned char *n2, unsigned l2, int last)
-{
- unsigned l = l1 < l2 ? l1 : l2;
- unsigned i;
- if (last) return -1;
- for (i = 0; i < l; i++) {
- unsigned char c1 = upcase(hpfs_sb(s)->sb_cp_table,n1[i]);
- unsigned char c2 = upcase(hpfs_sb(s)->sb_cp_table,n2[i]);
- if (c1 < c2) return -1;
- if (c1 > c2) return 1;
- }
- if (l1 < l2) return -1;
- if (l1 > l2) return 1;
- return 0;
-}
-
-int hpfs_is_name_long(const unsigned char *name, unsigned len)
-{
- int i,j;
- for (i = 0; i < len && name[i] != '.'; i++)
- if (no_dos_char(name[i])) return 1;
- if (!i || i > 8) return 1;
- if (i == len) return 0;
- for (j = i + 1; j < len; j++)
- if (name[j] == '.' || no_dos_char(name[i])) return 1;
- return j - i > 4;
-}
-
-/* OS/2 clears dots and spaces at the end of file name, so we have to */
-
-void hpfs_adjust_length(const unsigned char *name, unsigned *len)
-{
- if (!*len) return;
- if (*len == 1 && name[0] == '.') return;
- if (*len == 2 && name[0] == '.' && name[1] == '.') return;
- while (*len && (name[*len - 1] == '.' || name[*len - 1] == ' '))
- (*len)--;
-}
diff --git a/fs/hpfs/namei.c b/fs/hpfs/namei.c
deleted file mode 100644
index ac9b5e3e83fa..000000000000
--- a/fs/hpfs/namei.c
+++ /dev/null
@@ -1,621 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * linux/fs/hpfs/namei.c
- *
- * Mikulas Patocka (mikulas@artax.karlin.mff.cuni.cz), 1998-1999
- *
- * adding & removing files & directories
- */
-#include <linux/sched.h>
-#include "hpfs_fn.h"
-
-static void hpfs_update_directory_times(struct inode *dir)
-{
- time64_t t = local_to_gmt(dir->i_sb, local_get_seconds(dir->i_sb));
- if (t == inode_get_mtime_sec(dir) &&
- t == inode_get_ctime_sec(dir))
- return;
- inode_set_mtime_to_ts(dir, inode_set_ctime(dir, t, 0));
- hpfs_write_inode_nolock(dir);
-}
-
-static struct dentry *hpfs_mkdir(const struct mnt_idmap *idmap, struct inode *dir,
- struct dentry *dentry, umode_t mode)
-{
- const unsigned char *name = dentry->d_name.name;
- unsigned len = dentry->d_name.len;
- struct quad_buffer_head qbh0;
- struct buffer_head *bh;
- struct hpfs_dirent *de;
- struct fnode *fnode;
- struct dnode *dnode;
- struct inode *result;
- fnode_secno fno;
- dnode_secno dno;
- int r;
- struct hpfs_dirent dee;
- int err;
- if ((err = hpfs_chk_name(name, &len))) return ERR_PTR(err==-ENOENT ? -EINVAL : err);
- hpfs_lock(dir->i_sb);
- err = -ENOSPC;
- fnode = hpfs_alloc_fnode(dir->i_sb, hpfs_i(dir)->i_dno, &fno, &bh);
- if (!fnode)
- goto bail;
- dnode = hpfs_alloc_dnode(dir->i_sb, fno, &dno, &qbh0);
- if (!dnode)
- goto bail1;
- memset(&dee, 0, sizeof dee);
- dee.directory = 1;
- if (!(mode & 0222)) dee.read_only = 1;
- /*dee.archive = 0;*/
- dee.hidden = name[0] == '.';
- dee.fnode = cpu_to_le32(fno);
- dee.creation_date = dee.write_date = dee.read_date = cpu_to_le32(local_get_seconds(dir->i_sb));
- result = new_inode(dir->i_sb);
- if (!result) {
- err = -ENOMEM;
- goto bail2;
- }
- hpfs_init_inode(result);
- result->i_ino = fno;
- hpfs_i(result)->i_parent_dir = dir->i_ino;
- hpfs_i(result)->i_dno = dno;
- inode_set_mtime_to_ts(result,
- inode_set_atime_to_ts(result, inode_set_ctime(result, local_to_gmt(dir->i_sb, le32_to_cpu(dee.creation_date)), 0)));
- hpfs_i(result)->i_ea_size = 0;
- result->i_mode |= S_IFDIR;
- result->i_op = &hpfs_dir_iops;
- result->i_fop = &hpfs_dir_ops;
- result->i_blocks = 4;
- result->i_size = 2048;
- set_nlink(result, 2);
- if (dee.read_only)
- result->i_mode &= ~0222;
-
- r = hpfs_add_dirent(dir, name, len, &dee);
- if (r == 1)
- goto bail3;
- if (r == -1) {
- err = -EEXIST;
- goto bail3;
- }
- fnode->len = len;
- memcpy(fnode->name, name, len > 15 ? 15 : len);
- fnode->up = cpu_to_le32(dir->i_ino);
- fnode->flags |= FNODE_dir;
- fnode->btree.n_free_nodes = 7;
- fnode->btree.n_used_nodes = 1;
- fnode->btree.first_free = cpu_to_le16(0x14);
- fnode->u.external[0].disk_secno = cpu_to_le32(dno);
- fnode->u.external[0].file_secno = cpu_to_le32(-1);
- dnode->root_dnode = 1;
- dnode->up = cpu_to_le32(fno);
- de = hpfs_add_de(dir->i_sb, dnode, "\001\001", 2, 0);
- de->creation_date = de->write_date = de->read_date = cpu_to_le32(local_get_seconds(dir->i_sb));
- if (!(mode & 0222)) de->read_only = 1;
- de->first = de->directory = 1;
- /*de->hidden = de->system = 0;*/
- de->fnode = cpu_to_le32(fno);
- mark_buffer_dirty(bh);
- brelse(bh);
- hpfs_mark_4buffers_dirty(&qbh0);
- hpfs_brelse4(&qbh0);
- inc_nlink(dir);
- insert_inode_hash(result);
-
- if (!uid_eq(result->i_uid, current_fsuid()) ||
- !gid_eq(result->i_gid, current_fsgid()) ||
- result->i_mode != mode) {
- result->i_uid = current_fsuid();
- result->i_gid = current_fsgid();
- result->i_mode = mode;
- hpfs_write_inode_nolock(result);
- }
- hpfs_update_directory_times(dir);
- d_instantiate(dentry, result);
- hpfs_unlock(dir->i_sb);
- return NULL;
-bail3:
- iput(result);
-bail2:
- hpfs_brelse4(&qbh0);
- hpfs_free_dnode(dir->i_sb, dno);
-bail1:
- brelse(bh);
- hpfs_free_sectors(dir->i_sb, fno, 1);
-bail:
- hpfs_unlock(dir->i_sb);
- return ERR_PTR(err);
-}
-
-static int hpfs_create(const struct mnt_idmap *idmap, struct inode *dir,
- struct dentry *dentry, umode_t mode)
-{
- const unsigned char *name = dentry->d_name.name;
- unsigned len = dentry->d_name.len;
- struct inode *result = NULL;
- struct buffer_head *bh;
- struct fnode *fnode;
- fnode_secno fno;
- int r;
- struct hpfs_dirent dee;
- int err;
- if ((err = hpfs_chk_name(name, &len)))
- return err==-ENOENT ? -EINVAL : err;
- hpfs_lock(dir->i_sb);
- err = -ENOSPC;
- fnode = hpfs_alloc_fnode(dir->i_sb, hpfs_i(dir)->i_dno, &fno, &bh);
- if (!fnode)
- goto bail;
- memset(&dee, 0, sizeof dee);
- if (!(mode & 0222)) dee.read_only = 1;
- dee.archive = 1;
- dee.hidden = name[0] == '.';
- dee.fnode = cpu_to_le32(fno);
- dee.creation_date = dee.write_date = dee.read_date = cpu_to_le32(local_get_seconds(dir->i_sb));
-
- result = new_inode(dir->i_sb);
- if (!result) {
- err = -ENOMEM;
- goto bail1;
- }
- hpfs_init_inode(result);
- result->i_ino = fno;
- result->i_mode |= S_IFREG;
- result->i_mode &= ~0111;
- result->i_op = &hpfs_file_iops;
- result->i_fop = &hpfs_file_ops;
- set_nlink(result, 1);
- hpfs_i(result)->i_parent_dir = dir->i_ino;
- inode_set_mtime_to_ts(result,
- inode_set_atime_to_ts(result, inode_set_ctime(result, local_to_gmt(dir->i_sb, le32_to_cpu(dee.creation_date)), 0)));
- hpfs_i(result)->i_ea_size = 0;
- if (dee.read_only)
- result->i_mode &= ~0222;
- result->i_blocks = 1;
- result->i_size = 0;
- result->i_data.a_ops = &hpfs_aops;
- hpfs_i(result)->mmu_private = 0;
-
- r = hpfs_add_dirent(dir, name, len, &dee);
- if (r == 1)
- goto bail2;
- if (r == -1) {
- err = -EEXIST;
- goto bail2;
- }
- fnode->len = len;
- memcpy(fnode->name, name, len > 15 ? 15 : len);
- fnode->up = cpu_to_le32(dir->i_ino);
- mark_buffer_dirty(bh);
- brelse(bh);
-
- insert_inode_hash(result);
-
- if (!uid_eq(result->i_uid, current_fsuid()) ||
- !gid_eq(result->i_gid, current_fsgid()) ||
- result->i_mode != (mode | S_IFREG)) {
- result->i_uid = current_fsuid();
- result->i_gid = current_fsgid();
- result->i_mode = mode | S_IFREG;
- hpfs_write_inode_nolock(result);
- }
- hpfs_update_directory_times(dir);
- d_instantiate(dentry, result);
- hpfs_unlock(dir->i_sb);
- return 0;
-
-bail2:
- iput(result);
-bail1:
- brelse(bh);
- hpfs_free_sectors(dir->i_sb, fno, 1);
-bail:
- hpfs_unlock(dir->i_sb);
- return err;
-}
-
-static int hpfs_mknod(const struct mnt_idmap *idmap, struct inode *dir,
- struct dentry *dentry, umode_t mode, dev_t rdev)
-{
- const unsigned char *name = dentry->d_name.name;
- unsigned len = dentry->d_name.len;
- struct buffer_head *bh;
- struct fnode *fnode;
- fnode_secno fno;
- int r;
- struct hpfs_dirent dee;
- struct inode *result = NULL;
- int err;
- if ((err = hpfs_chk_name(name, &len))) return err==-ENOENT ? -EINVAL : err;
- if (hpfs_sb(dir->i_sb)->sb_eas < 2) return -EPERM;
- hpfs_lock(dir->i_sb);
- err = -ENOSPC;
- fnode = hpfs_alloc_fnode(dir->i_sb, hpfs_i(dir)->i_dno, &fno, &bh);
- if (!fnode)
- goto bail;
- memset(&dee, 0, sizeof dee);
- if (!(mode & 0222)) dee.read_only = 1;
- dee.archive = 1;
- dee.hidden = name[0] == '.';
- dee.fnode = cpu_to_le32(fno);
- dee.creation_date = dee.write_date = dee.read_date = cpu_to_le32(local_get_seconds(dir->i_sb));
-
- result = new_inode(dir->i_sb);
- if (!result) {
- err = -ENOMEM;
- goto bail1;
- }
- hpfs_init_inode(result);
- result->i_ino = fno;
- hpfs_i(result)->i_parent_dir = dir->i_ino;
- inode_set_mtime_to_ts(result,
- inode_set_atime_to_ts(result, inode_set_ctime(result, local_to_gmt(dir->i_sb, le32_to_cpu(dee.creation_date)), 0)));
- hpfs_i(result)->i_ea_size = 0;
- result->i_uid = current_fsuid();
- result->i_gid = current_fsgid();
- set_nlink(result, 1);
- result->i_size = 0;
- result->i_blocks = 1;
- init_special_inode(result, mode, rdev);
-
- r = hpfs_add_dirent(dir, name, len, &dee);
- if (r == 1)
- goto bail2;
- if (r == -1) {
- err = -EEXIST;
- goto bail2;
- }
- fnode->len = len;
- memcpy(fnode->name, name, len > 15 ? 15 : len);
- fnode->up = cpu_to_le32(dir->i_ino);
- mark_buffer_dirty(bh);
-
- insert_inode_hash(result);
-
- hpfs_write_inode_nolock(result);
- hpfs_update_directory_times(dir);
- d_instantiate(dentry, result);
- brelse(bh);
- hpfs_unlock(dir->i_sb);
- return 0;
-bail2:
- iput(result);
-bail1:
- brelse(bh);
- hpfs_free_sectors(dir->i_sb, fno, 1);
-bail:
- hpfs_unlock(dir->i_sb);
- return err;
-}
-
-static int hpfs_symlink(const struct mnt_idmap *idmap, struct inode *dir,
- struct dentry *dentry, const char *symlink)
-{
- const unsigned char *name = dentry->d_name.name;
- unsigned len = dentry->d_name.len;
- struct buffer_head *bh;
- struct fnode *fnode;
- fnode_secno fno;
- int r;
- struct hpfs_dirent dee;
- struct inode *result;
- int err;
- if ((err = hpfs_chk_name(name, &len))) return err==-ENOENT ? -EINVAL : err;
- hpfs_lock(dir->i_sb);
- if (hpfs_sb(dir->i_sb)->sb_eas < 2) {
- hpfs_unlock(dir->i_sb);
- return -EPERM;
- }
- err = -ENOSPC;
- fnode = hpfs_alloc_fnode(dir->i_sb, hpfs_i(dir)->i_dno, &fno, &bh);
- if (!fnode)
- goto bail;
- memset(&dee, 0, sizeof dee);
- dee.archive = 1;
- dee.hidden = name[0] == '.';
- dee.fnode = cpu_to_le32(fno);
- dee.creation_date = dee.write_date = dee.read_date = cpu_to_le32(local_get_seconds(dir->i_sb));
-
- result = new_inode(dir->i_sb);
- if (!result) {
- err = -ENOMEM;
- goto bail1;
- }
- result->i_ino = fno;
- hpfs_init_inode(result);
- hpfs_i(result)->i_parent_dir = dir->i_ino;
- inode_set_mtime_to_ts(result,
- inode_set_atime_to_ts(result, inode_set_ctime(result, local_to_gmt(dir->i_sb, le32_to_cpu(dee.creation_date)), 0)));
- hpfs_i(result)->i_ea_size = 0;
- result->i_mode = S_IFLNK | 0777;
- result->i_uid = current_fsuid();
- result->i_gid = current_fsgid();
- result->i_blocks = 1;
- set_nlink(result, 1);
- result->i_size = strlen(symlink);
- inode_nohighmem(result);
- result->i_op = &page_symlink_inode_operations;
- result->i_data.a_ops = &hpfs_symlink_aops;
-
- r = hpfs_add_dirent(dir, name, len, &dee);
- if (r == 1)
- goto bail2;
- if (r == -1) {
- err = -EEXIST;
- goto bail2;
- }
- fnode->len = len;
- memcpy(fnode->name, name, len > 15 ? 15 : len);
- fnode->up = cpu_to_le32(dir->i_ino);
- hpfs_set_ea(result, fnode, "SYMLINK", symlink, strlen(symlink));
- mark_buffer_dirty(bh);
- brelse(bh);
-
- insert_inode_hash(result);
-
- hpfs_write_inode_nolock(result);
- hpfs_update_directory_times(dir);
- d_instantiate(dentry, result);
- hpfs_unlock(dir->i_sb);
- return 0;
-bail2:
- iput(result);
-bail1:
- brelse(bh);
- hpfs_free_sectors(dir->i_sb, fno, 1);
-bail:
- hpfs_unlock(dir->i_sb);
- return err;
-}
-
-static int hpfs_unlink(struct inode *dir, struct dentry *dentry)
-{
- const unsigned char *name = dentry->d_name.name;
- unsigned len = dentry->d_name.len;
- struct quad_buffer_head qbh;
- struct hpfs_dirent *de;
- struct inode *inode = d_inode(dentry);
- dnode_secno dno;
- int r;
- int err;
-
- hpfs_lock(dir->i_sb);
- hpfs_adjust_length(name, &len);
-
- err = -ENOENT;
- de = map_dirent(dir, hpfs_i(dir)->i_dno, name, len, &dno, &qbh);
- if (!de)
- goto out;
-
- err = -EPERM;
- if (de->first)
- goto out1;
-
- err = -EISDIR;
- if (de->directory)
- goto out1;
-
- r = hpfs_remove_dirent(dir, dno, de, &qbh, 1);
- switch (r) {
- case 1:
- hpfs_error(dir->i_sb, "there was error when removing dirent");
- err = -EFSERROR;
- break;
- case 2: /* no space for deleting */
- err = -ENOSPC;
- break;
- default:
- drop_nlink(inode);
- err = 0;
- }
- goto out;
-
-out1:
- hpfs_brelse4(&qbh);
-out:
- if (!err)
- hpfs_update_directory_times(dir);
- hpfs_unlock(dir->i_sb);
- return err;
-}
-
-static int hpfs_rmdir(struct inode *dir, struct dentry *dentry)
-{
- const unsigned char *name = dentry->d_name.name;
- unsigned len = dentry->d_name.len;
- struct quad_buffer_head qbh;
- struct hpfs_dirent *de;
- struct inode *inode = d_inode(dentry);
- dnode_secno dno;
- int n_items = 0;
- int err;
- int r;
-
- hpfs_adjust_length(name, &len);
- hpfs_lock(dir->i_sb);
- err = -ENOENT;
- de = map_dirent(dir, hpfs_i(dir)->i_dno, name, len, &dno, &qbh);
- if (!de)
- goto out;
-
- err = -EPERM;
- if (de->first)
- goto out1;
-
- err = -ENOTDIR;
- if (!de->directory)
- goto out1;
-
- hpfs_count_dnodes(dir->i_sb, hpfs_i(inode)->i_dno, NULL, NULL, &n_items);
- err = -ENOTEMPTY;
- if (n_items)
- goto out1;
-
- r = hpfs_remove_dirent(dir, dno, de, &qbh, 1);
- switch (r) {
- case 1:
- hpfs_error(dir->i_sb, "there was error when removing dirent");
- err = -EFSERROR;
- break;
- case 2:
- err = -ENOSPC;
- break;
- default:
- drop_nlink(dir);
- clear_nlink(inode);
- err = 0;
- }
- goto out;
-out1:
- hpfs_brelse4(&qbh);
-out:
- if (!err)
- hpfs_update_directory_times(dir);
- hpfs_unlock(dir->i_sb);
- return err;
-}
-
-static int hpfs_symlink_read_folio(struct file *file, struct folio *folio)
-{
- char *link = folio_address(folio);
- struct inode *i = folio->mapping->host;
- struct fnode *fnode;
- struct buffer_head *bh;
- int err;
-
- err = -EIO;
- hpfs_lock(i->i_sb);
- if (!(fnode = hpfs_map_fnode(i->i_sb, i->i_ino, &bh)))
- goto fail;
- err = hpfs_read_ea(i->i_sb, fnode, "SYMLINK", link, PAGE_SIZE);
- brelse(bh);
-fail:
- hpfs_unlock(i->i_sb);
- folio_end_read(folio, err == 0);
- return err;
-}
-
-const struct address_space_operations hpfs_symlink_aops = {
- .read_folio = hpfs_symlink_read_folio
-};
-
-static int hpfs_rename(const struct mnt_idmap *idmap, struct inode *old_dir,
- struct dentry *old_dentry, struct inode *new_dir,
- struct dentry *new_dentry, unsigned int flags)
-{
- const unsigned char *old_name = old_dentry->d_name.name;
- unsigned old_len = old_dentry->d_name.len;
- const unsigned char *new_name = new_dentry->d_name.name;
- unsigned new_len = new_dentry->d_name.len;
- struct inode *i = d_inode(old_dentry);
- struct inode *new_inode = d_inode(new_dentry);
- struct quad_buffer_head qbh, qbh1;
- struct hpfs_dirent *dep, *nde;
- struct hpfs_dirent de;
- dnode_secno dno;
- int r;
- struct buffer_head *bh;
- struct fnode *fnode;
- int err;
-
- if (flags & ~RENAME_NOREPLACE)
- return -EINVAL;
-
- if ((err = hpfs_chk_name(new_name, &new_len))) return err;
- err = 0;
- hpfs_adjust_length(old_name, &old_len);
-
- hpfs_lock(i->i_sb);
- /* order doesn't matter, due to VFS exclusion */
-
- /* Erm? Moving over the empty non-busy directory is perfectly legal */
- if (new_inode && S_ISDIR(new_inode->i_mode)) {
- err = -EINVAL;
- goto end1;
- }
-
- if (!(dep = map_dirent(old_dir, hpfs_i(old_dir)->i_dno, old_name, old_len, &dno, &qbh))) {
- hpfs_error(i->i_sb, "lookup succeeded but map dirent failed");
- err = -ENOENT;
- goto end1;
- }
- copy_de(&de, dep);
- de.hidden = new_name[0] == '.';
-
- if (new_inode) {
- int r;
- if ((r = hpfs_remove_dirent(old_dir, dno, dep, &qbh, 1)) != 2) {
- if ((nde = map_dirent(new_dir, hpfs_i(new_dir)->i_dno, new_name, new_len, NULL, &qbh1))) {
- clear_nlink(new_inode);
- copy_de(nde, &de);
- memcpy(nde->name, new_name, new_len);
- hpfs_mark_4buffers_dirty(&qbh1);
- hpfs_brelse4(&qbh1);
- goto end;
- }
- hpfs_error(new_dir->i_sb, "hpfs_rename: could not find dirent");
- err = -EFSERROR;
- goto end1;
- }
- err = -ENOSPC;
- goto end1;
- }
-
- if (new_dir == old_dir) hpfs_brelse4(&qbh);
-
- if ((r = hpfs_add_dirent(new_dir, new_name, new_len, &de))) {
- if (r == -1) hpfs_error(new_dir->i_sb, "hpfs_rename: dirent already exists!");
- err = r == 1 ? -ENOSPC : -EFSERROR;
- if (new_dir != old_dir) hpfs_brelse4(&qbh);
- goto end1;
- }
-
- if (new_dir == old_dir)
- if (!(dep = map_dirent(old_dir, hpfs_i(old_dir)->i_dno, old_name, old_len, &dno, &qbh))) {
- hpfs_error(i->i_sb, "lookup succeeded but map dirent failed at #2");
- err = -ENOENT;
- goto end1;
- }
-
- if ((r = hpfs_remove_dirent(old_dir, dno, dep, &qbh, 0))) {
- hpfs_error(i->i_sb, "hpfs_rename: could not remove dirent");
- err = r == 2 ? -ENOSPC : -EFSERROR;
- goto end1;
- }
-
-end:
- hpfs_i(i)->i_parent_dir = new_dir->i_ino;
- if (S_ISDIR(i->i_mode)) {
- inc_nlink(new_dir);
- drop_nlink(old_dir);
- }
- if ((fnode = hpfs_map_fnode(i->i_sb, i->i_ino, &bh))) {
- fnode->up = cpu_to_le32(new_dir->i_ino);
- fnode->len = new_len;
- memcpy(fnode->name, new_name, new_len>15?15:new_len);
- if (new_len < 15) memset(&fnode->name[new_len], 0, 15 - new_len);
- mark_buffer_dirty(bh);
- brelse(bh);
- }
-end1:
- if (!err) {
- hpfs_update_directory_times(old_dir);
- hpfs_update_directory_times(new_dir);
- }
- hpfs_unlock(i->i_sb);
- return err;
-}
-
-const struct inode_operations hpfs_dir_iops =
-{
- .create = hpfs_create,
- .lookup = hpfs_lookup,
- .unlink = hpfs_unlink,
- .symlink = hpfs_symlink,
- .mkdir = hpfs_mkdir,
- .rmdir = hpfs_rmdir,
- .mknod = hpfs_mknod,
- .rename = hpfs_rename,
- .setattr = hpfs_setattr,
-};
diff --git a/fs/hpfs/super.c b/fs/hpfs/super.c
deleted file mode 100644
index 8fbdbf080627..000000000000
--- a/fs/hpfs/super.c
+++ /dev/null
@@ -1,789 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * linux/fs/hpfs/super.c
- *
- * Mikulas Patocka (mikulas@artax.karlin.mff.cuni.cz), 1998-1999
- *
- * mounting, unmounting, error handling
- */
-
-#include "hpfs_fn.h"
-#include <linux/module.h>
-#include <linux/fs_struct.h>
-#include <linux/fs_context.h>
-#include <linux/fs_parser.h>
-#include <linux/init.h>
-#include <linux/statfs.h>
-#include <linux/magic.h>
-#include <linux/sched.h>
-#include <linux/bitmap.h>
-#include <linux/slab.h>
-#include <linux/seq_file.h>
-
-/* Mark the filesystem dirty, so that chkdsk checks it when os/2 booted */
-
-static void mark_dirty(struct super_block *s, int remount)
-{
- if (hpfs_sb(s)->sb_chkdsk && (remount || !sb_rdonly(s))) {
- struct buffer_head *bh;
- struct hpfs_spare_block *sb;
- if ((sb = hpfs_map_sector(s, 17, &bh, 0))) {
- sb->dirty = 1;
- sb->old_wrote = 0;
- mark_buffer_dirty(bh);
- sync_dirty_buffer(bh);
- brelse(bh);
- }
- }
-}
-
-/* Mark the filesystem clean (mark it dirty for chkdsk if chkdsk==2 or if there
- were errors) */
-
-static void unmark_dirty(struct super_block *s)
-{
- struct buffer_head *bh;
- struct hpfs_spare_block *sb;
- if (sb_rdonly(s)) return;
- sync_blockdev(s->s_bdev);
- if ((sb = hpfs_map_sector(s, 17, &bh, 0))) {
- sb->dirty = hpfs_sb(s)->sb_chkdsk > 1 - hpfs_sb(s)->sb_was_error;
- sb->old_wrote = hpfs_sb(s)->sb_chkdsk >= 2 && !hpfs_sb(s)->sb_was_error;
- mark_buffer_dirty(bh);
- sync_dirty_buffer(bh);
- brelse(bh);
- }
-}
-
-/* Filesystem error... */
-void hpfs_error(struct super_block *s, const char *fmt, ...)
-{
- struct va_format vaf;
- va_list args;
-
- va_start(args, fmt);
-
- vaf.fmt = fmt;
- vaf.va = &args;
-
- pr_err("filesystem error: %pV", &vaf);
-
- va_end(args);
-
- if (!hpfs_sb(s)->sb_was_error) {
- if (hpfs_sb(s)->sb_err == 2) {
- pr_cont("; crashing the system because you wanted it\n");
- mark_dirty(s, 0);
- panic("HPFS panic");
- } else if (hpfs_sb(s)->sb_err == 1) {
- if (sb_rdonly(s))
- pr_cont("; already mounted read-only\n");
- else {
- pr_cont("; remounting read-only\n");
- mark_dirty(s, 0);
- s->s_flags |= SB_RDONLY;
- }
- } else if (sb_rdonly(s))
- pr_cont("; going on - but anything won't be destroyed because it's read-only\n");
- else
- pr_cont("; corrupted filesystem mounted read/write - your computer will explode within 20 seconds ... but you wanted it so!\n");
- } else
- pr_cont("\n");
- hpfs_sb(s)->sb_was_error = 1;
-}
-
-/*
- * A little trick to detect cycles in many hpfs structures and don't let the
- * kernel crash on corrupted filesystem. When first called, set c2 to 0.
- *
- * BTW. chkdsk doesn't detect cycles correctly. When I had 2 lost directories
- * nested each in other, chkdsk locked up happilly.
- */
-
-int hpfs_stop_cycles(struct super_block *s, int key, int *c1, int *c2,
- char *msg)
-{
- if (*c2 && *c1 == key) {
- hpfs_error(s, "cycle detected on key %08x in %s", key, msg);
- return 1;
- }
- (*c2)++;
- if (!((*c2 - 1) & *c2)) *c1 = key;
- return 0;
-}
-
-static void free_sbi(struct hpfs_sb_info *sbi)
-{
- kfree(sbi->sb_cp_table);
- kfree(sbi->sb_bmp_dir);
- kfree(sbi);
-}
-
-static void lazy_free_sbi(struct rcu_head *rcu)
-{
- free_sbi(container_of(rcu, struct hpfs_sb_info, rcu));
-}
-
-static void hpfs_put_super(struct super_block *s)
-{
- hpfs_lock(s);
- unmark_dirty(s);
- hpfs_unlock(s);
- call_rcu(&hpfs_sb(s)->rcu, lazy_free_sbi);
-}
-
-static unsigned hpfs_count_one_bitmap(struct super_block *s, secno secno)
-{
- struct quad_buffer_head qbh;
- unsigned long *bits;
- unsigned count;
-
- bits = hpfs_map_4sectors(s, secno, &qbh, 0);
- if (!bits)
- return (unsigned)-1;
- count = bitmap_weight(bits, 2048 * BITS_PER_BYTE);
- hpfs_brelse4(&qbh);
- return count;
-}
-
-static unsigned count_bitmaps(struct super_block *s)
-{
- unsigned n, count, n_bands;
- n_bands = (hpfs_sb(s)->sb_fs_size + 0x3fff) >> 14;
- count = 0;
- for (n = 0; n < COUNT_RD_AHEAD; n++) {
- hpfs_prefetch_bitmap(s, n);
- }
- for (n = 0; n < n_bands; n++) {
- unsigned c;
- hpfs_prefetch_bitmap(s, n + COUNT_RD_AHEAD);
- c = hpfs_count_one_bitmap(s, le32_to_cpu(hpfs_sb(s)->sb_bmp_dir[n]));
- if (c != (unsigned)-1)
- count += c;
- }
- return count;
-}
-
-unsigned hpfs_get_free_dnodes(struct super_block *s)
-{
- struct hpfs_sb_info *sbi = hpfs_sb(s);
- if (sbi->sb_n_free_dnodes == (unsigned)-1) {
- unsigned c = hpfs_count_one_bitmap(s, sbi->sb_dmap);
- if (c == (unsigned)-1)
- return 0;
- sbi->sb_n_free_dnodes = c;
- }
- return sbi->sb_n_free_dnodes;
-}
-
-static int hpfs_statfs(struct dentry *dentry, struct kstatfs *buf)
-{
- struct super_block *s = dentry->d_sb;
- struct hpfs_sb_info *sbi = hpfs_sb(s);
- u64 id = huge_encode_dev(s->s_bdev->bd_dev);
-
- hpfs_lock(s);
-
- if (sbi->sb_n_free == (unsigned)-1)
- sbi->sb_n_free = count_bitmaps(s);
-
- buf->f_type = s->s_magic;
- buf->f_bsize = 512;
- buf->f_blocks = sbi->sb_fs_size;
- buf->f_bfree = sbi->sb_n_free;
- buf->f_bavail = sbi->sb_n_free;
- buf->f_files = sbi->sb_dirband_size / 4;
- buf->f_ffree = hpfs_get_free_dnodes(s);
- buf->f_fsid = u64_to_fsid(id);
- buf->f_namelen = 254;
-
- hpfs_unlock(s);
-
- return 0;
-}
-
-
-long hpfs_ioctl(struct file *file, unsigned cmd, unsigned long arg)
-{
- switch (cmd) {
- case FITRIM: {
- struct fstrim_range range;
- secno n_trimmed;
- int r;
- if (!capable(CAP_SYS_ADMIN))
- return -EPERM;
- if (copy_from_user(&range, (struct fstrim_range __user *)arg, sizeof(range)))
- return -EFAULT;
- r = hpfs_trim_fs(file_inode(file)->i_sb, range.start >> 9, (range.start + range.len) >> 9, (range.minlen + 511) >> 9, &n_trimmed);
- if (r)
- return r;
- range.len = (u64)n_trimmed << 9;
- if (copy_to_user((struct fstrim_range __user *)arg, &range, sizeof(range)))
- return -EFAULT;
- return 0;
- }
- default: {
- return -ENOIOCTLCMD;
- }
- }
-}
-
-
-static struct kmem_cache * hpfs_inode_cachep;
-
-static struct inode *hpfs_alloc_inode(struct super_block *sb)
-{
- struct hpfs_inode_info *ei;
- ei = alloc_inode_sb(sb, hpfs_inode_cachep, GFP_NOFS);
- if (!ei)
- return NULL;
- return &ei->vfs_inode;
-}
-
-static void hpfs_free_inode(struct inode *inode)
-{
- kmem_cache_free(hpfs_inode_cachep, hpfs_i(inode));
-}
-
-static void init_once(void *foo)
-{
- struct hpfs_inode_info *ei = (struct hpfs_inode_info *) foo;
-
- inode_init_once(&ei->vfs_inode);
-}
-
-static int init_inodecache(void)
-{
- hpfs_inode_cachep = kmem_cache_create("hpfs_inode_cache",
- sizeof(struct hpfs_inode_info),
- 0, (SLAB_RECLAIM_ACCOUNT|
- SLAB_ACCOUNT),
- init_once);
- if (hpfs_inode_cachep == NULL)
- return -ENOMEM;
- return 0;
-}
-
-static void destroy_inodecache(void)
-{
- /*
- * Make sure all delayed rcu free inodes are flushed before we
- * destroy cache.
- */
- rcu_barrier();
- kmem_cache_destroy(hpfs_inode_cachep);
-}
-
-enum {
- Opt_help, Opt_uid, Opt_gid, Opt_umask, Opt_case,
- Opt_check, Opt_err, Opt_eas, Opt_chkdsk, Opt_timeshift,
-};
-
-static const struct constant_table hpfs_param_case[] = {
- {"asis", 0},
- {"lower", 1},
- {}
-};
-
-static const struct constant_table hpfs_param_check[] = {
- {"none", 0},
- {"normal", 1},
- {"strict", 2},
- {}
-};
-
-static const struct constant_table hpfs_param_err[] = {
- {"continue", 0},
- {"remount-ro", 1},
- {"panic", 2},
- {}
-};
-
-static const struct constant_table hpfs_param_eas[] = {
- {"no", 0},
- {"ro", 1},
- {"rw", 2},
- {}
-};
-
-static const struct constant_table hpfs_param_chkdsk[] = {
- {"no", 0},
- {"errors", 1},
- {"always", 2},
- {}
-};
-
-static const struct fs_parameter_spec hpfs_param_spec[] = {
- fsparam_flag ("help", Opt_help),
- fsparam_uid ("uid", Opt_uid),
- fsparam_gid ("gid", Opt_gid),
- fsparam_u32oct ("umask", Opt_umask),
- fsparam_enum ("case", Opt_case, hpfs_param_case),
- fsparam_enum ("check", Opt_check, hpfs_param_check),
- fsparam_enum ("errors", Opt_err, hpfs_param_err),
- fsparam_enum ("eas", Opt_eas, hpfs_param_eas),
- fsparam_enum ("chkdsk", Opt_chkdsk, hpfs_param_chkdsk),
- fsparam_s32 ("timeshift", Opt_timeshift),
- {}
-};
-
-struct hpfs_fc_context {
- kuid_t uid;
- kgid_t gid;
- umode_t umask;
- int lowercase;
- int eas;
- int chk;
- int errs;
- int chkdsk;
- int timeshift;
-};
-
-static inline void hpfs_help(void)
-{
- pr_info("\n\
-HPFS filesystem options:\n\
- help do not mount and display this text\n\
- uid=xxx set uid of files that don't have uid specified in eas\n\
- gid=xxx set gid of files that don't have gid specified in eas\n\
- umask=xxx set mode of files that don't have mode specified in eas\n\
- case=lower lowercase all files\n\
- case=asis do not lowercase files (default)\n\
- check=none no fs checks - kernel may crash on corrupted filesystem\n\
- check=normal do some checks - it should not crash (default)\n\
- check=strict do extra time-consuming checks, used for debugging\n\
- errors=continue continue on errors\n\
- errors=remount-ro remount read-only if errors found (default)\n\
- errors=panic panic on errors\n\
- chkdsk=no do not mark fs for chkdsking even if there were errors\n\
- chkdsk=errors mark fs dirty if errors found (default)\n\
- chkdsk=always always mark fs dirty - used for debugging\n\
- eas=no ignore extended attributes\n\
- eas=ro read but do not write extended attributes\n\
- eas=rw r/w eas => enables chmod, chown, mknod, ln -s (default)\n\
- timeshift=nnn add nnn seconds to file times\n\
-\n");
-}
-
-static int hpfs_parse_param(struct fs_context *fc, struct fs_parameter *param)
-{
- struct hpfs_fc_context *ctx = fc->fs_private;
- struct fs_parse_result result;
- int opt;
-
- opt = fs_parse(fc, hpfs_param_spec, param, &result);
- if (opt < 0)
- return opt;
-
- switch (opt) {
- case Opt_help:
- hpfs_help();
- return -EINVAL;
- case Opt_uid:
- ctx->uid = result.uid;
- break;
- case Opt_gid:
- ctx->gid = result.gid;
- break;
- case Opt_umask:
- ctx->umask = result.uint_32;
- break;
- case Opt_case:
- ctx->lowercase = result.uint_32;
- break;
- case Opt_check:
- ctx->chk = result.uint_32;
- break;
- case Opt_err:
- ctx->errs = result.uint_32;
- break;
- case Opt_eas:
- ctx->eas = result.uint_32;
- break;
- case Opt_chkdsk:
- ctx->chkdsk = result.uint_32;
- break;
- case Opt_timeshift:
- {
- char *rhs = param->string;
- int timeshift;
-
- if (kstrtoint(rhs, 0, ×hift))
- return -EINVAL;
- ctx->timeshift = timeshift;
- break;
- }
- default:
- return -EINVAL;
- }
-
- return 0;
-}
-
-static int hpfs_reconfigure(struct fs_context *fc)
-{
- struct hpfs_fc_context *ctx = fc->fs_private;
- struct super_block *s = fc->root->d_sb;
- struct hpfs_sb_info *sbi = hpfs_sb(s);
-
- sync_filesystem(s);
-
- fc->sb_flags |= SB_NOATIME;
-
- hpfs_lock(s);
-
- if (ctx->timeshift != sbi->sb_timeshift) {
- pr_err("timeshift can't be changed using remount.\n");
- goto out_err;
- }
-
- unmark_dirty(s);
-
- sbi->sb_uid = ctx->uid; sbi->sb_gid = ctx->gid;
- sbi->sb_mode = 0777 & ~ctx->umask;
- sbi->sb_lowercase = ctx->lowercase;
- sbi->sb_eas = ctx->eas; sbi->sb_chk = ctx->chk;
- sbi->sb_chkdsk = ctx->chkdsk;
- sbi->sb_err = ctx->errs; sbi->sb_timeshift = ctx->timeshift;
-
- if (!(fc->sb_flags & SB_RDONLY)) mark_dirty(s, 1);
-
- hpfs_unlock(s);
- return 0;
-
-out_err:
- hpfs_unlock(s);
- return -EINVAL;
-}
-
-static int hpfs_show_options(struct seq_file *seq, struct dentry *root)
-{
- struct hpfs_sb_info *sbi = hpfs_sb(root->d_sb);
-
- seq_printf(seq, ",uid=%u", from_kuid_munged(&init_user_ns, sbi->sb_uid));
- seq_printf(seq, ",gid=%u", from_kgid_munged(&init_user_ns, sbi->sb_gid));
- seq_printf(seq, ",umask=%03o", (~sbi->sb_mode & 0777));
- if (sbi->sb_lowercase)
- seq_printf(seq, ",case=lower");
- if (!sbi->sb_chk)
- seq_printf(seq, ",check=none");
- if (sbi->sb_chk == 2)
- seq_printf(seq, ",check=strict");
- if (!sbi->sb_err)
- seq_printf(seq, ",errors=continue");
- if (sbi->sb_err == 2)
- seq_printf(seq, ",errors=panic");
- if (!sbi->sb_chkdsk)
- seq_printf(seq, ",chkdsk=no");
- if (sbi->sb_chkdsk == 2)
- seq_printf(seq, ",chkdsk=always");
- if (!sbi->sb_eas)
- seq_printf(seq, ",eas=no");
- if (sbi->sb_eas == 1)
- seq_printf(seq, ",eas=ro");
- if (sbi->sb_timeshift)
- seq_printf(seq, ",timeshift=%d", sbi->sb_timeshift);
- return 0;
-}
-
-/* Super operations */
-
-static const struct super_operations hpfs_sops =
-{
- .alloc_inode = hpfs_alloc_inode,
- .free_inode = hpfs_free_inode,
- .evict_inode = hpfs_evict_inode,
- .put_super = hpfs_put_super,
- .statfs = hpfs_statfs,
- .show_options = hpfs_show_options,
-};
-
-static int hpfs_fill_super(struct super_block *s, struct fs_context *fc)
-{
- struct hpfs_fc_context *ctx = fc->fs_private;
- struct buffer_head *bh0, *bh1, *bh2;
- struct hpfs_boot_block *bootblock;
- struct hpfs_super_block *superblock;
- struct hpfs_spare_block *spareblock;
- struct hpfs_sb_info *sbi;
- struct inode *root;
- int silent = fc->sb_flags & SB_SILENT;
-
- dnode_secno root_dno;
- struct hpfs_dirent *de = NULL;
- struct quad_buffer_head qbh;
-
- sbi = kzalloc_obj(*sbi);
- if (!sbi) {
- return -ENOMEM;
- }
- s->s_fs_info = sbi;
-
- mutex_init(&sbi->hpfs_mutex);
- hpfs_lock(s);
-
- /*sbi->sb_mounting = 1;*/
- if (!sb_set_blocksize(s, 512))
- goto bail0;
- sbi->sb_fs_size = -1;
- if (!(bootblock = hpfs_map_sector(s, 0, &bh0, 0))) goto bail1;
- if (!(superblock = hpfs_map_sector(s, 16, &bh1, 1))) goto bail2;
- if (!(spareblock = hpfs_map_sector(s, 17, &bh2, 0))) goto bail3;
-
- /* Check magics */
- if (/*le16_to_cpu(bootblock->magic) != BB_MAGIC
- ||*/ le32_to_cpu(superblock->magic) != SB_MAGIC
- || le32_to_cpu(spareblock->magic) != SP_MAGIC) {
- if (!silent)
- pr_err("Bad magic ... probably not HPFS\n");
- goto bail4;
- }
-
- /* Check version */
- if (!sb_rdonly(s) && superblock->funcversion != 2 && superblock->funcversion != 3) {
- pr_err("Bad version %d,%d. Mount readonly to go around\n",
- (int)superblock->version, (int)superblock->funcversion);
- pr_err("please try recent version of HPFS driver at http://artax.karlin.mff.cuni.cz/~mikulas/vyplody/hpfs/index-e.cgi and if it still can't understand this format, contact author - mikulas@artax.karlin.mff.cuni.cz\n");
- goto bail4;
- }
-
- s->s_flags |= SB_NOATIME;
-
- /* Fill superblock stuff */
- s->s_magic = HPFS_SUPER_MAGIC;
- s->s_op = &hpfs_sops;
- set_default_d_op(s, &hpfs_dentry_operations);
- s->s_time_min = local_to_gmt(s, 0);
- s->s_time_max = local_to_gmt(s, U32_MAX);
-
- sbi->sb_root = le32_to_cpu(superblock->root);
- sbi->sb_fs_size = le32_to_cpu(superblock->n_sectors);
- sbi->sb_bitmaps = le32_to_cpu(superblock->bitmaps);
- sbi->sb_dirband_start = le32_to_cpu(superblock->dir_band_start);
- sbi->sb_dirband_size = le32_to_cpu(superblock->n_dir_band);
- sbi->sb_dmap = le32_to_cpu(superblock->dir_band_bitmap);
- sbi->sb_uid = ctx->uid;
- sbi->sb_gid = ctx->gid;
- sbi->sb_mode = 0777 & ~ctx->umask;
- sbi->sb_n_free = -1;
- sbi->sb_n_free_dnodes = -1;
- sbi->sb_lowercase = ctx->lowercase;
- sbi->sb_eas = ctx->eas;
- sbi->sb_chk = ctx->chk;
- sbi->sb_chkdsk = ctx->chkdsk;
- sbi->sb_err = ctx->errs;
- sbi->sb_timeshift = ctx->timeshift;
- sbi->sb_was_error = 0;
- sbi->sb_cp_table = NULL;
- sbi->sb_c_bitmap = -1;
- sbi->sb_max_fwd_alloc = 0xffffff;
-
- if (sbi->sb_fs_size >= 0x80000000) {
- hpfs_error(s, "invalid size in superblock: %08x",
- (unsigned)sbi->sb_fs_size);
- goto bail4;
- }
-
- if (spareblock->n_spares_used)
- hpfs_load_hotfix_map(s, spareblock);
-
- /* Load bitmap directory */
- if (!(sbi->sb_bmp_dir = hpfs_load_bitmap_directory(s, le32_to_cpu(superblock->bitmaps))))
- goto bail4;
-
- /* Check for general fs errors*/
- if (spareblock->dirty && !spareblock->old_wrote) {
- if (sbi->sb_err == 2) {
- pr_err("Improperly stopped, not mounted\n");
- goto bail4;
- }
- hpfs_error(s, "improperly stopped");
- }
-
- if (!sb_rdonly(s)) {
- spareblock->dirty = 1;
- spareblock->old_wrote = 0;
- mark_buffer_dirty(bh2);
- }
-
- if (le32_to_cpu(spareblock->n_dnode_spares) != le32_to_cpu(spareblock->n_dnode_spares_free)) {
- if (sbi->sb_err >= 2) {
- pr_err("Spare dnodes used, try chkdsk\n");
- mark_dirty(s, 0);
- goto bail4;
- }
- hpfs_error(s, "warning: spare dnodes used, try chkdsk");
- if (sbi->sb_err == 0)
- pr_err("Proceeding, but your filesystem could be corrupted if you delete files or directories\n");
- }
- if (sbi->sb_chk) {
- unsigned a;
- if (le32_to_cpu(superblock->dir_band_end) - le32_to_cpu(superblock->dir_band_start) + 1 != le32_to_cpu(superblock->n_dir_band) ||
- le32_to_cpu(superblock->dir_band_end) < le32_to_cpu(superblock->dir_band_start) || le32_to_cpu(superblock->n_dir_band) > 0x4000) {
- hpfs_error(s, "dir band size mismatch: dir_band_start==%08x, dir_band_end==%08x, n_dir_band==%08x",
- le32_to_cpu(superblock->dir_band_start), le32_to_cpu(superblock->dir_band_end), le32_to_cpu(superblock->n_dir_band));
- goto bail4;
- }
- a = sbi->sb_dirband_size;
- sbi->sb_dirband_size = 0;
- if (hpfs_chk_sectors(s, le32_to_cpu(superblock->dir_band_start), le32_to_cpu(superblock->n_dir_band), "dir_band") ||
- hpfs_chk_sectors(s, le32_to_cpu(superblock->dir_band_bitmap), 4, "dir_band_bitmap") ||
- hpfs_chk_sectors(s, le32_to_cpu(superblock->bitmaps), 4, "bitmaps")) {
- mark_dirty(s, 0);
- goto bail4;
- }
- sbi->sb_dirband_size = a;
- } else
- pr_err("You really don't want any checks? You are crazy...\n");
-
- /* Load code page table */
- if (le32_to_cpu(spareblock->n_code_pages))
- if (!(sbi->sb_cp_table = hpfs_load_code_page(s, le32_to_cpu(spareblock->code_page_dir))))
- pr_err("code page support is disabled\n");
-
- brelse(bh2);
- brelse(bh1);
- brelse(bh0);
-
- root = iget_locked(s, sbi->sb_root);
- if (!root)
- goto bail0;
- hpfs_init_inode(root);
- hpfs_read_inode(root);
- unlock_new_inode(root);
- s->s_root = d_make_root(root);
- if (!s->s_root)
- goto bail0;
-
- /*
- * find the root directory's . pointer & finish filling in the inode
- */
-
- root_dno = hpfs_fnode_dno(s, sbi->sb_root);
- if (root_dno)
- de = map_dirent(root, root_dno, "\001\001", 2, NULL, &qbh);
- if (!de)
- hpfs_error(s, "unable to find root dir");
- else {
- inode_set_atime(root,
- local_to_gmt(s, le32_to_cpu(de->read_date)),
- 0);
- inode_set_mtime(root,
- local_to_gmt(s, le32_to_cpu(de->write_date)),
- 0);
- inode_set_ctime(root,
- local_to_gmt(s, le32_to_cpu(de->creation_date)),
- 0);
- hpfs_i(root)->i_ea_size = le32_to_cpu(de->ea_size);
- hpfs_i(root)->i_parent_dir = root->i_ino;
- if (root->i_size == -1)
- root->i_size = 2048;
- if (root->i_blocks == -1)
- root->i_blocks = 5;
- hpfs_brelse4(&qbh);
- }
- hpfs_unlock(s);
- return 0;
-
-bail4: brelse(bh2);
-bail3: brelse(bh1);
-bail2: brelse(bh0);
-bail1:
-bail0:
- hpfs_unlock(s);
- free_sbi(sbi);
- return -EINVAL;
-}
-
-static int hpfs_get_tree(struct fs_context *fc)
-{
- return get_tree_bdev(fc, hpfs_fill_super);
-}
-
-static void hpfs_free_fc(struct fs_context *fc)
-{
- kfree(fc->fs_private);
-}
-
-static const struct fs_context_operations hpfs_fc_context_ops = {
- .parse_param = hpfs_parse_param,
- .get_tree = hpfs_get_tree,
- .reconfigure = hpfs_reconfigure,
- .free = hpfs_free_fc,
-};
-
-static int hpfs_init_fs_context(struct fs_context *fc)
-{
- struct hpfs_fc_context *ctx;
-
- ctx = kzalloc_obj(struct hpfs_fc_context);
- if (!ctx)
- return -ENOMEM;
-
- if (fc->purpose == FS_CONTEXT_FOR_RECONFIGURE) {
- struct super_block *sb = fc->root->d_sb;
- struct hpfs_sb_info *sbi = hpfs_sb(sb);
-
- ctx->uid = sbi->sb_uid;
- ctx->gid = sbi->sb_gid;
- ctx->umask = 0777 & ~sbi->sb_mode;
- ctx->lowercase = sbi->sb_lowercase;
- ctx->eas = sbi->sb_eas;
- ctx->chk = sbi->sb_chk;
- ctx->chkdsk = sbi->sb_chkdsk;
- ctx->errs = sbi->sb_err;
- ctx->timeshift = sbi->sb_timeshift;
-
- } else {
- ctx->uid = current_uid();
- ctx->gid = current_gid();
- ctx->umask = current_umask();
- ctx->lowercase = 0;
- ctx->eas = 2;
- ctx->chk = 1;
- ctx->errs = 1;
- ctx->chkdsk = 1;
- ctx->timeshift = 0;
- }
-
- fc->fs_private = ctx;
- fc->ops = &hpfs_fc_context_ops;
-
- return 0;
-};
-
-static struct file_system_type hpfs_fs_type = {
- .owner = THIS_MODULE,
- .name = "hpfs",
- .kill_sb = kill_block_super,
- .fs_flags = FS_REQUIRES_DEV,
- .init_fs_context = hpfs_init_fs_context,
- .parameters = hpfs_param_spec,
-};
-MODULE_ALIAS_FS("hpfs");
-
-static int __init init_hpfs_fs(void)
-{
- int err = init_inodecache();
- if (err)
- goto out1;
- err = register_filesystem(&hpfs_fs_type);
- if (err)
- goto out;
- return 0;
-out:
- destroy_inodecache();
-out1:
- return err;
-}
-
-static void __exit exit_hpfs_fs(void)
-{
- unregister_filesystem(&hpfs_fs_type);
- destroy_inodecache();
-}
-
-module_init(init_hpfs_fs)
-module_exit(exit_hpfs_fs)
-MODULE_DESCRIPTION("OS/2 HPFS file system support");
-MODULE_LICENSE("GPL");
--
2.56.0
^ permalink raw reply [flat|nested] 2+ messages in thread
end of thread, other threads:[~2026-10-23 15:19 UTC | newest]
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2026-10-23 15:18 [PATCH 0/1] fs: remove hpfs filesystem Breno Rodrigues Alves
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