diff options
Diffstat (limited to 'libc/signal/sigset.c')
| -rw-r--r-- | libc/signal/sigset.c | 8 |
1 files changed, 3 insertions, 5 deletions
diff --git a/libc/signal/sigset.c b/libc/signal/sigset.c index 91f433661..03f3dc869 100644 --- a/libc/signal/sigset.c +++ b/libc/signal/sigset.c @@ -42,13 +42,11 @@ __sighandler_t sigset (int sig, __sighandler_t disp) /* Handle SIG_HOLD first. */ if (disp == SIG_HOLD) { - /* Create an empty signal set. */ __sigemptyset (&set); __sigaddset (&set, sig); /* Add the signal set to the current signal mask. */ - if (sigprocmask (SIG_BLOCK, &set, NULL) < 0) - return SIG_ERR; + sigprocmask (SIG_BLOCK, &set, NULL); /* can't fail */ return SIG_HOLD; } @@ -56,6 +54,7 @@ __sighandler_t sigset (int sig, __sighandler_t disp) memset(&act, 0, sizeof(act)); act.sa_handler = disp; + /* In Linux (as of 2.6.25), fails only if sig is SIGKILL or SIGSTOP */ if (sigaction (sig, &act, &oact) < 0) return SIG_ERR; @@ -64,8 +63,7 @@ __sighandler_t sigset (int sig, __sighandler_t disp) __sigaddset (&set, sig); /* Remove the signal set from the current signal mask. */ - if (sigprocmask (SIG_UNBLOCK, &set, NULL) < 0) - return SIG_ERR; + sigprocmask (SIG_UNBLOCK, &set, NULL); /* can't fail */ return oact.sa_handler; } |