diff options
author | Ulrich Drepper <drepper@redhat.com> | 2008-07-24 00:29:32 -0400 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-07-24 13:47:28 -0400 |
commit | 4006553b06306b34054529477b06b68a1c66249b (patch) | |
tree | d4ebbe4a5294b0cec69fe4908b7b7c569f4ece03 /include | |
parent | ed8cae8ba01348bfd83333f4648dd807b04d7f08 (diff) |
flag parameters: inotify_init
This patch introduces the new syscall inotify_init1 (note: the 1 stands for
the one parameter the syscall takes, as opposed to no parameter before). The
values accepted for this parameter are function-specific and defined in the
inotify.h header. Here the values must match the O_* flags, though. In this
patch CLOEXEC support is introduced.
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_CLOEXEC O_CLOEXEC
int
main (void)
{
int fd;
fd = syscall (__NR_inotify_init1, 0);
if (fd == -1)
{
puts ("inotify_init1(0) failed");
return 1;
}
int coe = fcntl (fd, F_GETFD);
if (coe == -1)
{
puts ("fcntl failed");
return 1;
}
if (coe & FD_CLOEXEC)
{
puts ("inotify_init1(0) set close-on-exit");
return 1;
}
close (fd);
fd = syscall (__NR_inotify_init1, IN_CLOEXEC);
if (fd == -1)
{
puts ("inotify_init1(IN_CLOEXEC) failed");
return 1;
}
coe = fcntl (fd, F_GETFD);
if (coe == -1)
{
puts ("fcntl failed");
return 1;
}
if ((coe & FD_CLOEXEC) == 0)
{
puts ("inotify_init1(O_CLOEXEC) does not set close-on-exit");
return 1;
}
close (fd);
puts ("OK");
return 0;
}
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[akpm@linux-foundation.org: add sys_ni stub]
Signed-off-by: Ulrich Drepper <drepper@redhat.com>
Acked-by: Davide Libenzi <davidel@xmailserver.org>
Cc: Michael Kerrisk <mtk.manpages@googlemail.com>
Cc: <linux-arch@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include')
-rw-r--r-- | include/asm-x86/unistd_32.h | 1 | ||||
-rw-r--r-- | include/asm-x86/unistd_64.h | 2 | ||||
-rw-r--r-- | include/linux/inotify.h | 5 | ||||
-rw-r--r-- | include/linux/syscalls.h | 1 |
4 files changed, 9 insertions, 0 deletions
diff --git a/include/asm-x86/unistd_32.h b/include/asm-x86/unistd_32.h index 748a05c77da4..b3daf503ab93 100644 --- a/include/asm-x86/unistd_32.h +++ b/include/asm-x86/unistd_32.h | |||
@@ -337,6 +337,7 @@ | |||
337 | #define __NR_epoll_create2 329 | 337 | #define __NR_epoll_create2 329 |
338 | #define __NR_dup3 330 | 338 | #define __NR_dup3 330 |
339 | #define __NR_pipe2 331 | 339 | #define __NR_pipe2 331 |
340 | #define __NR_inotify_init1 332 | ||
340 | 341 | ||
341 | #ifdef __KERNEL__ | 342 | #ifdef __KERNEL__ |
342 | 343 | ||
diff --git a/include/asm-x86/unistd_64.h b/include/asm-x86/unistd_64.h index d2284b43ad58..c8cb88d70c6b 100644 --- a/include/asm-x86/unistd_64.h +++ b/include/asm-x86/unistd_64.h | |||
@@ -651,6 +651,8 @@ __SYSCALL(__NR_epoll_create2, sys_epoll_create2) | |||
651 | __SYSCALL(__NR_dup3, sys_dup3) | 651 | __SYSCALL(__NR_dup3, sys_dup3) |
652 | #define __NR_pipe2 293 | 652 | #define __NR_pipe2 293 |
653 | __SYSCALL(__NR_pipe2, sys_pipe2) | 653 | __SYSCALL(__NR_pipe2, sys_pipe2) |
654 | #define __NR_inotify_init1 294 | ||
655 | __SYSCALL(__NR_inotify_init1, sys_inotify_init1) | ||
654 | 656 | ||
655 | 657 | ||
656 | #ifndef __NO_STUBS | 658 | #ifndef __NO_STUBS |
diff --git a/include/linux/inotify.h b/include/linux/inotify.h index 742b917e7d1b..72ef82120512 100644 --- a/include/linux/inotify.h +++ b/include/linux/inotify.h | |||
@@ -7,6 +7,8 @@ | |||
7 | #ifndef _LINUX_INOTIFY_H | 7 | #ifndef _LINUX_INOTIFY_H |
8 | #define _LINUX_INOTIFY_H | 8 | #define _LINUX_INOTIFY_H |
9 | 9 | ||
10 | /* For O_CLOEXEC */ | ||
11 | #include <linux/fcntl.h> | ||
10 | #include <linux/types.h> | 12 | #include <linux/types.h> |
11 | 13 | ||
12 | /* | 14 | /* |
@@ -63,6 +65,9 @@ struct inotify_event { | |||
63 | IN_MOVED_TO | IN_DELETE | IN_CREATE | IN_DELETE_SELF | \ | 65 | IN_MOVED_TO | IN_DELETE | IN_CREATE | IN_DELETE_SELF | \ |
64 | IN_MOVE_SELF) | 66 | IN_MOVE_SELF) |
65 | 67 | ||
68 | /* Flags for sys_inotify_init1. */ | ||
69 | #define IN_CLOEXEC O_CLOEXEC | ||
70 | |||
66 | #ifdef __KERNEL__ | 71 | #ifdef __KERNEL__ |
67 | 72 | ||
68 | #include <linux/dcache.h> | 73 | #include <linux/dcache.h> |
diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h index 034d3358549e..93a7e7f017a6 100644 --- a/include/linux/syscalls.h +++ b/include/linux/syscalls.h | |||
@@ -547,6 +547,7 @@ asmlinkage long sys_get_mempolicy(int __user *policy, | |||
547 | unsigned long addr, unsigned long flags); | 547 | unsigned long addr, unsigned long flags); |
548 | 548 | ||
549 | asmlinkage long sys_inotify_init(void); | 549 | asmlinkage long sys_inotify_init(void); |
550 | asmlinkage long sys_inotify_init1(int flags); | ||
550 | asmlinkage long sys_inotify_add_watch(int fd, const char __user *path, | 551 | asmlinkage long sys_inotify_add_watch(int fd, const char __user *path, |
551 | u32 mask); | 552 | u32 mask); |
552 | asmlinkage long sys_inotify_rm_watch(int fd, u32 wd); | 553 | asmlinkage long sys_inotify_rm_watch(int fd, u32 wd); |