diff options
Diffstat (limited to 'lib/cloexec.c')
-rw-r--r-- | lib/cloexec.c | 20 |
1 files changed, 11 insertions, 9 deletions
diff --git a/lib/cloexec.c b/lib/cloexec.c index 20f30db45..e07cdd3d5 100644 --- a/lib/cloexec.c +++ b/lib/cloexec.c @@ -37,27 +37,29 @@ /* Set the `FD_CLOEXEC' flag of DESC if VALUE is true, or clear the flag if VALUE is false. - Return true on success, or false on error with `errno' set. */ + Return 0 on success, or -1 on error with `errno' set. */ -bool +int set_cloexec_flag (int desc, bool value) { #if defined F_GETFD && defined F_SETFD int flags = fcntl (desc, F_GETFD, 0); - int newflags; - if (flags < 0) - return false; + if (0 <= flags) + { + int newflags = (value ? flags | FD_CLOEXEC : flags & ~FD_CLOEXEC); - newflags = (value ? flags | FD_CLOEXEC : flags & ~FD_CLOEXEC); + if (flags == newflags + || fcntl (desc, F_SETFD, newflags) != -1) + return 0; + } - return (flags == newflags - || fcntl (desc, F_SETFD, newflags) != -1); + return -1; #else - return true; + return 0; #endif } |