diff options
Diffstat (limited to 'lib/cloexec.c')
| -rw-r--r-- | lib/cloexec.c | 35 |
1 files changed, 16 insertions, 19 deletions
diff --git a/lib/cloexec.c b/lib/cloexec.c index 20f30db4..cf2308ca 100644 --- a/lib/cloexec.c +++ b/lib/cloexec.c | |||
| @@ -1,5 +1,5 @@ | |||
| 1 | /* closexec.c - set or clear the close-on-exec descriptor flag | 1 | /* closexec.c - set or clear the close-on-exec descriptor flag |
| 2 | Copyright (C) 1991, 2004 Free Software Foundation, Inc. | 2 | Copyright (C) 1991, 2004, 2005 Free Software Foundation, Inc. |
| 3 | 3 | ||
| 4 | This program is free software; you can redistribute it and/or modify | 4 | This program is free software; you can redistribute it and/or modify |
| 5 | it under the terms of the GNU General Public License as published by | 5 | it under the terms of the GNU General Public License as published by |
| @@ -13,23 +13,18 @@ | |||
| 13 | 13 | ||
| 14 | You should have received a copy of the GNU General Public License | 14 | You should have received a copy of the GNU General Public License |
| 15 | along with this program; if not, write to the Free Software Foundation, | 15 | along with this program; if not, write to the Free Software Foundation, |
| 16 | Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | 16 | Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
| 17 | 17 | ||
| 18 | The code is taken from glibc/manual/llio.texi */ | 18 | The code is taken from glibc/manual/llio.texi */ |
| 19 | 19 | ||
| 20 | #if HAVE_CONFIG_H | 20 | #ifdef HAVE_CONFIG_H |
| 21 | # include <config.h> | 21 | # include <config.h> |
| 22 | #endif | 22 | #endif |
| 23 | 23 | ||
| 24 | #include "cloexec.h" | 24 | #include "cloexec.h" |
| 25 | 25 | ||
| 26 | #if HAVE_UNISTD_H | 26 | #include <unistd.h> |
| 27 | # include <unistd.h> | 27 | #include <fcntl.h> |
| 28 | #endif | ||
| 29 | |||
| 30 | #if HAVE_FCNTL_H | ||
| 31 | # include <fcntl.h> | ||
| 32 | #endif | ||
| 33 | 28 | ||
| 34 | #ifndef FD_CLOEXEC | 29 | #ifndef FD_CLOEXEC |
| 35 | # define FD_CLOEXEC 1 | 30 | # define FD_CLOEXEC 1 |
| @@ -37,27 +32,29 @@ | |||
| 37 | 32 | ||
| 38 | /* Set the `FD_CLOEXEC' flag of DESC if VALUE is true, | 33 | /* Set the `FD_CLOEXEC' flag of DESC if VALUE is true, |
| 39 | or clear the flag if VALUE is false. | 34 | or clear the flag if VALUE is false. |
| 40 | Return true on success, or false on error with `errno' set. */ | 35 | Return 0 on success, or -1 on error with `errno' set. */ |
| 41 | 36 | ||
| 42 | bool | 37 | int |
| 43 | set_cloexec_flag (int desc, bool value) | 38 | set_cloexec_flag (int desc, bool value) |
| 44 | { | 39 | { |
| 45 | #if defined F_GETFD && defined F_SETFD | 40 | #if defined F_GETFD && defined F_SETFD |
| 46 | 41 | ||
| 47 | int flags = fcntl (desc, F_GETFD, 0); | 42 | int flags = fcntl (desc, F_GETFD, 0); |
| 48 | int newflags; | ||
| 49 | 43 | ||
| 50 | if (flags < 0) | 44 | if (0 <= flags) |
| 51 | return false; | 45 | { |
| 46 | int newflags = (value ? flags | FD_CLOEXEC : flags & ~FD_CLOEXEC); | ||
| 52 | 47 | ||
| 53 | newflags = (value ? flags | FD_CLOEXEC : flags & ~FD_CLOEXEC); | 48 | if (flags == newflags |
| 49 | || fcntl (desc, F_SETFD, newflags) != -1) | ||
| 50 | return 0; | ||
| 51 | } | ||
| 54 | 52 | ||
| 55 | return (flags == newflags | 53 | return -1; |
| 56 | || fcntl (desc, F_SETFD, newflags) != -1); | ||
| 57 | 54 | ||
| 58 | #else | 55 | #else |
| 59 | 56 | ||
| 60 | return true; | 57 | return 0; |
| 61 | 58 | ||
| 62 | #endif | 59 | #endif |
| 63 | } | 60 | } |
