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authorUlrich Drepper <drepper@redhat.com>2008-07-24 08:29:41 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2008-07-24 21:47:29 +0400
commit510df2dd482496083e1c3b1a8c9b6afd5fa4c7d7 (patch)
treecb6fe277b361e13c100d20db5e3689d0e3abca45 /include/linux/inotify.h
parentbe61a86d7237dd80510615f38ae21d6e1e98660c (diff)
downloadlinux-510df2dd482496083e1c3b1a8c9b6afd5fa4c7d7.tar.xz
flag parameters: NONBLOCK in inotify_init
This patch adds non-blocking support for inotify_init1. The additional changes needed are minimal. The following test must be adjusted for architectures other than x86 and x86-64 and in case the syscall numbers changed. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ #include <fcntl.h> #include <stdio.h> #include <unistd.h> #include <sys/syscall.h> #ifndef __NR_inotify_init1 # ifdef __x86_64__ # define __NR_inotify_init1 294 # elif defined __i386__ # define __NR_inotify_init1 332 # else # error "need __NR_inotify_init1" # endif #endif #define IN_NONBLOCK O_NONBLOCK int main (void) { int fd = syscall (__NR_inotify_init1, 0); if (fd == -1) { puts ("inotify_init1(0) failed"); return 1; } int fl = fcntl (fd, F_GETFL); if (fl == -1) { puts ("fcntl failed"); return 1; } if (fl & O_NONBLOCK) { puts ("inotify_init1(0) set non-blocking mode"); return 1; } close (fd); fd = syscall (__NR_inotify_init1, IN_NONBLOCK); if (fd == -1) { puts ("inotify_init1(IN_NONBLOCK) failed"); return 1; } fl = fcntl (fd, F_GETFL); if (fl == -1) { puts ("fcntl failed"); return 1; } if ((fl & O_NONBLOCK) == 0) { puts ("inotify_init1(IN_NONBLOCK) set non-blocking mode"); return 1; } close (fd); puts ("OK"); return 0; } ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Signed-off-by: Ulrich Drepper <drepper@redhat.com> Acked-by: Davide Libenzi <davidel@xmailserver.org> Cc: Michael Kerrisk <mtk.manpages@googlemail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/inotify.h')
-rw-r--r--include/linux/inotify.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/include/linux/inotify.h b/include/linux/inotify.h
index 72ef82120512..bd578578a8b9 100644
--- a/include/linux/inotify.h
+++ b/include/linux/inotify.h
@@ -7,7 +7,7 @@
#ifndef _LINUX_INOTIFY_H
#define _LINUX_INOTIFY_H
-/* For O_CLOEXEC */
+/* For O_CLOEXEC and O_NONBLOCK */
#include <linux/fcntl.h>
#include <linux/types.h>
@@ -67,6 +67,7 @@ struct inotify_event {
/* Flags for sys_inotify_init1. */
#define IN_CLOEXEC O_CLOEXEC
+#define IN_NONBLOCK O_NONBLOCK
#ifdef __KERNEL__