diff options
Diffstat (limited to 'sysdeps/posix/sigset.c')
| -rw-r--r-- | sysdeps/posix/sigset.c | 63 |
1 files changed, 24 insertions, 39 deletions
diff --git a/sysdeps/posix/sigset.c b/sysdeps/posix/sigset.c index 0c2aa76ad4..a4dfe0ae93 100644 --- a/sysdeps/posix/sigset.c +++ b/sysdeps/posix/sigset.c @@ -8,7 +8,7 @@ The GNU C Library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public @@ -20,7 +20,7 @@ #include <stddef.h> #include <signal.h> #include <string.h> /* For the real memset prototype. */ - +#include <sigsetops.h> /* Set the disposition for SIG. */ __sighandler_t @@ -31,19 +31,19 @@ sigset (int sig, __sighandler_t disp) sigset_t set; sigset_t oset; -#ifdef SIG_HOLD - /* Handle SIG_HOLD first. */ - if (disp == SIG_HOLD) + /* Check signal extents to protect __sigismember. */ + if (disp == SIG_ERR || sig < 1 || sig >= NSIG) { - /* Create an empty signal set. */ - if (__sigemptyset (&set) < 0) - return SIG_ERR; + __set_errno (EINVAL); + return SIG_ERR; + } - /* Add the specified signal. */ - if (__sigaddset (&set, sig) < 0) - return SIG_ERR; + __sigemptyset (&set); + __sigaddset (&set, sig); - /* Add the signal set to the current signal mask. */ + if (disp == SIG_HOLD) + { + /* Add the signal to the current signal mask. */ if (__sigprocmask (SIG_BLOCK, &set, &oset) < 0) return SIG_ERR; @@ -57,34 +57,19 @@ sigset (int sig, __sighandler_t disp) return oact.sa_handler; } -#endif /* SIG_HOLD */ - - /* Check signal extents to protect __sigismember. */ - if (disp == SIG_ERR || sig < 1 || sig >= NSIG) + else { - __set_errno (EINVAL); - return SIG_ERR; - } - - act.sa_handler = disp; - if (__sigemptyset (&act.sa_mask) < 0) - return SIG_ERR; - act.sa_flags = 0; - if (__sigaction (sig, &act, &oact) < 0) - return SIG_ERR; - - /* Create an empty signal set. */ - if (__sigemptyset (&set) < 0) - return SIG_ERR; - - /* Add the specified signal. */ - if (__sigaddset (&set, sig) < 0) - return SIG_ERR; + act.sa_handler = disp; + __sigemptyset (&act.sa_mask); + act.sa_flags = 0; + if (__sigaction (sig, &act, &oact) < 0) + return SIG_ERR; - /* Remove the signal set from the current signal mask. */ - if (__sigprocmask (SIG_UNBLOCK, &set, &oset) < 0) - return SIG_ERR; + /* Remove the signal from the current signal mask. */ + if (__sigprocmask (SIG_UNBLOCK, &set, &oset) < 0) + return SIG_ERR; - /* If the signal was already blocked return SIG_HOLD. */ - return __sigismember (&oset, sig) ? SIG_HOLD : oact.sa_handler; + /* If the signal was already blocked return SIG_HOLD. */ + return __sigismember (&oset, sig) ? SIG_HOLD : oact.sa_handler; + } } |