mirror of https://lore.kernel.org/lkml/
 help / color / mirror / Atom feed
From: "Thomas Weißschuh" <linux@weissschuh.net>
To: Willy Tarreau <w@1wt.eu>, Shuah Khan <shuah@kernel.org>
Cc: "Arnd Bergmann" <arnd@arndb.de>,
	linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org,
	"Thomas Weißschuh" <linux@weissschuh.net>
Subject: [PATCH 04/12] tools/nolibc: use 64-bit off_t
Date: Wed, 29 Oct 2025 17:02:54 +0100	[thread overview]
Message-ID: <20251029-nolibc-uapi-types-v1-4-e79de3b215d8@weissschuh.net> (raw)
In-Reply-To: <20251029-nolibc-uapi-types-v1-0-e79de3b215d8@weissschuh.net>

The kernel uses 64-bit values for file offsets.
Currently these might be truncated to 32-bit when assigned to
nolibc's off_t values.

Switch to 64-bit off_t consistently.

Suggested-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/lkml/cec27d94-c99d-4c57-9a12-275ea663dda8@app.fastmail.com/
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
---
 tools/include/nolibc/std.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/include/nolibc/std.h b/tools/include/nolibc/std.h
index eae457d60858..392f4dd94158 100644
--- a/tools/include/nolibc/std.h
+++ b/tools/include/nolibc/std.h
@@ -26,7 +26,7 @@ typedef   signed int          pid_t;
 typedef unsigned int          uid_t;
 typedef unsigned int          gid_t;
 typedef unsigned long       nlink_t;
-typedef   signed long         off_t;
+typedef  int64_t              off_t;
 typedef   signed long     blksize_t;
 typedef   signed long      blkcnt_t;
 typedef __kernel_time_t      time_t;

-- 
2.51.1.dirty


  parent reply	other threads:[~2025-10-29 16:04 UTC|newest]

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-10-29 16:02 [PATCH 00/12] tools/nolibc: always use 64-bit ino_t, off_t and time-related types Thomas Weißschuh
2025-10-29 16:02 ` [PATCH 01/12] tools/nolibc: use 64-bit ino_t Thomas Weißschuh
2025-10-29 16:02 ` [PATCH 02/12] tools/nolibc: handle 64-bit off_t for llseek Thomas Weißschuh
2025-10-30 14:56   ` Arnd Bergmann
2025-10-29 16:02 ` [PATCH 03/12] tools/nolibc: prefer the llseek syscall Thomas Weißschuh
2025-10-29 16:02 ` Thomas Weißschuh [this message]
2025-10-29 16:02 ` [PATCH 05/12] tools/nolibc: remove now superfluous overflow check in llseek Thomas Weißschuh
2025-10-30 14:58   ` Arnd Bergmann
2025-10-29 16:02 ` [PATCH 06/12] tools/nolibc: remove more __nolibc_enosys() fallbacks Thomas Weißschuh
2025-10-29 16:02 ` [PATCH 07/12] tools/nolibc: prefer explicit 64-bit time-related system calls Thomas Weißschuh
2025-10-30 14:44   ` Arnd Bergmann
2025-10-29 16:02 ` [PATCH 08/12] tools/nolibc: gettimeofday(): avoid libgcc 64-bit divisions Thomas Weißschuh
2025-10-30 14:57   ` Arnd Bergmann
2025-11-02  8:31   ` Willy Tarreau
2025-11-02  9:27     ` Thomas Weißschuh
2025-11-02  9:49       ` Willy Tarreau
2025-10-29 16:02 ` [PATCH 09/12] tools/nolibc: use a custom struct timespec Thomas Weißschuh
2025-10-30 14:46   ` Arnd Bergmann
2025-11-02  8:36     ` Willy Tarreau
2025-11-02  8:40       ` Willy Tarreau
2025-11-02  9:41       ` Thomas Weißschuh
2025-11-02  9:50         ` Willy Tarreau
2025-10-29 16:03 ` [PATCH 10/12] tools/nolibc: always use 64-bit time types Thomas Weißschuh
2025-10-29 16:03 ` [PATCH 11/12] selftests/nolibc: test compatibility of timespec and __kernel_timespec Thomas Weißschuh
2025-10-29 16:03 ` [PATCH 12/12] tools/nolibc: remove time conversions Thomas Weißschuh
2025-10-30 14:58   ` Arnd Bergmann
2025-11-02  8:44 ` [PATCH 00/12] tools/nolibc: always use 64-bit ino_t, off_t and time-related types Willy Tarreau

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20251029-nolibc-uapi-types-v1-4-e79de3b215d8@weissschuh.net \
    --to=linux@weissschuh.net \
    --cc=arnd@arndb.de \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-kselftest@vger.kernel.org \
    --cc=shuah@kernel.org \
    --cc=w@1wt.eu \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox

all inboxes | Powered by JetHome®