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(daemon): Define errno in case /dev/null is not the correct device.

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This commit is contained in:
Ulrich Drepper 2004-09-25 05:30:41 +00:00
parent 5fa3cee8e9
commit 267a7a9eca
1 changed files with 18 additions and 9 deletions
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27
misc/daemon.c
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@ -65,17 +65,26 @@ daemon(nochdir, noclose)
&& (fd = open_not_cancel(_PATH_DEVNULL, O_RDWR, 0)) != -1) { && (fd = open_not_cancel(_PATH_DEVNULL, O_RDWR, 0)) != -1) {
struct stat64 st; struct stat64 st;
if (__builtin_expect (__fxstat64 (_STAT_VER, fd, &st), 0) == 0 if (__builtin_expect (__fxstat64 (_STAT_VER, fd, &st), 0) == 0)
&& __builtin_expect (S_ISCHR (st.st_mode), 1) != 0 {
if (__builtin_expect (S_ISCHR (st.st_mode), 1) != 0
#if defined DEV_NULL_MAJOR && defined DEV_NULL_MINOR #if defined DEV_NULL_MAJOR && defined DEV_NULL_MINOR
&& st.st_rdev == makedev (DEV_NULL_MAJOR, DEV_NULL_MINOR) && (st.st_rdev
== makedev (DEV_NULL_MAJOR, DEV_NULL_MINOR))
#endif #endif
) { ) {
(void)__dup2(fd, STDIN_FILENO); (void)__dup2(fd, STDIN_FILENO);
(void)__dup2(fd, STDOUT_FILENO); (void)__dup2(fd, STDOUT_FILENO);
(void)__dup2(fd, STDERR_FILENO); (void)__dup2(fd, STDERR_FILENO);
if (fd > 2) if (fd > 2)
(void)__close (fd); (void)__close (fd);
} else {
/* We must set an errno value since no
function call actually failed. */
close_not_cancel_no_status (fd);
__set_errno (ENODEV);
return -1;
}
} else { } else {
close_not_cancel_no_status (fd); close_not_cancel_no_status (fd);
return -1; return -1;