diff options
Diffstat (limited to 'misc/daemon.c')
| -rw-r--r-- | misc/daemon.c | 88 |
1 files changed, 49 insertions, 39 deletions
diff --git a/misc/daemon.c b/misc/daemon.c index 3c73ac2ab8..14577e40ad 100644 --- a/misc/daemon.c +++ b/misc/daemon.c @@ -43,50 +43,60 @@ static char sccsid[] = "@(#)daemon.c 8.1 (Berkeley) 6/4/93"; int daemon (int nochdir, int noclose) { - int fd; + int fd; - switch (__fork()) { - case -1: - return (-1); - case 0: - break; - default: - _exit(0); - } + switch (__fork ()) + { + case -1: + return -1; - if (__setsid() == -1) - return (-1); + case 0: + break; - if (!nochdir) - (void)__chdir("/"); + default: + _exit (0); + } - if (!noclose) { - struct __stat64_t64 st; + if (__setsid () == -1) + return -1; - if ((fd = __open_nocancel(_PATH_DEVNULL, O_RDWR, 0)) != -1 - && __glibc_likely (__fstat64_time64 (fd, &st) == 0)) { - if (__builtin_expect (S_ISCHR (st.st_mode), 1) != 0 + if (!nochdir) + (void) __chdir ("/"); + + if (!noclose) + { + struct __stat64_t64 st; + + fd = __open_nocancel (_PATH_DEVNULL, O_RDWR, 0); + if (fd != -1 && __glibc_likely (__fstat64_time64 (fd, &st) == 0)) + { + if (__builtin_expect (S_ISCHR (st.st_mode), 1) != 0 #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 - ) { - (void)__dup2(fd, STDIN_FILENO); - (void)__dup2(fd, STDOUT_FILENO); - (void)__dup2(fd, STDERR_FILENO); - if (fd > 2) - (void)__close (fd); - } else { - /* We must set an errno value since no - function call actually failed. */ - __close_nocancel_nostatus (fd); - __set_errno (ENODEV); - return -1; - } - } else { - __close_nocancel_nostatus (fd); - return -1; - } - } - return (0); + ) + { + (void) __dup2 (fd, STDIN_FILENO); + (void) __dup2 (fd, STDOUT_FILENO); + (void) __dup2 (fd, STDERR_FILENO); + if (fd > 2) + (void) __close (fd); + } + else + { + /* We must set an errno value since no function call + actually failed. */ + __close_nocancel_nostatus (fd); + __set_errno (ENODEV); + return -1; + } + } + else + { + __close_nocancel_nostatus (fd); + return -1; + } + } + + return 0; } |