From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753434Ab0BIA6I (ORCPT ); Mon, 8 Feb 2010 19:58:08 -0500 Received: from rcsinet12.oracle.com ([148.87.113.124]:52316 "EHLO rcsinet12.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753329Ab0BIA6D (ORCPT ); Mon, 8 Feb 2010 19:58:03 -0500 Date: Mon, 8 Feb 2010 16:56:25 -0800 From: Randy Dunlap To: lkml Cc: akpm , Stephen Rothwell Subject: [PATCH 3/4] docum/fs: split txt and source files Message-Id: <20100208165625.aaa9688f.randy.dunlap@oracle.com> Organization: Oracle Linux Eng. X-Mailer: Sylpheed 2.6.0 (GTK+ 2.16.6; x86_64-redhat-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Source-IP: acsmt354.oracle.com [141.146.40.154] X-Auth-Type: Internal IP X-CT-RefId: str=0001.0A090204.4B70B2E2.0099:SCFMA4539814,ss=1,fgs=0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Randy Dunlap Make dnotify_test.c source file and add it to Makefile so that bitrot can be prevented. Signed-off-by: Randy Dunlap cc: Stephen Rothwell --- Documentation/Makefile | 2 - Documentation/filesystems/00-INDEX | 2 + Documentation/filesystems/Makefile | 8 ++++ Documentation/filesystems/dnotify.txt | 39 ++------------------- Documentation/filesystems/dnotify_test.c | 34 ++++++++++++++++++ 5 files changed, 50 insertions(+), 35 deletions(-) --- /dev/null +++ lnx-2633-rc7/Documentation/filesystems/Makefile @@ -0,0 +1,8 @@ +# kbuild trick to avoid linker error. Can be omitted if a module is built. +obj- := dummy.o + +# List of programs to build +hostprogs-y := dnotify_test + +# Tell kbuild to always build the programs +always := $(hostprogs-y) --- lnx-2633-rc7.orig/Documentation/filesystems/dnotify.txt +++ lnx-2633-rc7/Documentation/filesystems/dnotify.txt @@ -62,38 +62,9 @@ disabled, fcntl(fd, F_NOTIFY, ...) will Example ------- +See Documentation/filesystems/dnotify_test.c for an example. - #define _GNU_SOURCE /* needed to get the defines */ - #include /* in glibc 2.2 this has the needed - values defined */ - #include - #include - #include - - static volatile int event_fd; - - static void handler(int sig, siginfo_t *si, void *data) - { - event_fd = si->si_fd; - } - - int main(void) - { - struct sigaction act; - int fd; - - act.sa_sigaction = handler; - sigemptyset(&act.sa_mask); - act.sa_flags = SA_SIGINFO; - sigaction(SIGRTMIN + 1, &act, NULL); - - fd = open(".", O_RDONLY); - fcntl(fd, F_SETSIG, SIGRTMIN + 1); - fcntl(fd, F_NOTIFY, DN_MODIFY|DN_CREATE|DN_MULTISHOT); - /* we will now be notified if any of the files - in "." is modified or new files are created */ - while (1) { - pause(); - printf("Got event on fd=%d\n", event_fd); - } - } +NOTE +---- +Beginning with Linux 2.6.13, dnotify has been replaced by inotify. +See Documentation/filesystems/inotify.txt for more information on it. --- /dev/null +++ lnx-2633-rc7/Documentation/filesystems/dnotify_test.c @@ -0,0 +1,34 @@ +#define _GNU_SOURCE /* needed to get the defines */ +#include /* in glibc 2.2 this has the needed + values defined */ +#include +#include +#include + +static volatile int event_fd; + +static void handler(int sig, siginfo_t *si, void *data) +{ + event_fd = si->si_fd; +} + +int main(void) +{ + struct sigaction act; + int fd; + + act.sa_sigaction = handler; + sigemptyset(&act.sa_mask); + act.sa_flags = SA_SIGINFO; + sigaction(SIGRTMIN + 1, &act, NULL); + + fd = open(".", O_RDONLY); + fcntl(fd, F_SETSIG, SIGRTMIN + 1); + fcntl(fd, F_NOTIFY, DN_MODIFY|DN_CREATE|DN_MULTISHOT); + /* we will now be notified if any of the files + in "." is modified or new files are created */ + while (1) { + pause(); + printf("Got event on fd=%d\n", event_fd); + } +} --- lnx-2633-rc7.orig/Documentation/filesystems/00-INDEX +++ lnx-2633-rc7/Documentation/filesystems/00-INDEX @@ -32,6 +32,8 @@ dlmfs.txt - info on the userspace interface to the OCFS2 DLM. dnotify.txt - info about directory notification in Linux. +dnotify_test.c + - example program for dnotify ecryptfs.txt - docs on eCryptfs: stacked cryptographic filesystem for Linux. exofs.txt --- lnx-2633-rc7.orig/Documentation/Makefile +++ lnx-2633-rc7/Documentation/Makefile @@ -1,3 +1,3 @@ obj-m := DocBook/ accounting/ auxdisplay/ connector/ \ - filesystems/configfs/ ia64/ laptops/ networking/ \ + filesystems/ filesystems/configfs/ ia64/ laptops/ networking/ \ pcmcia/ spi/ timers/ video4linux/ vm/ watchdog/src/