diff options
Diffstat (limited to 'lib/libc/gen/usleep.c')
| -rw-r--r-- | lib/libc/gen/usleep.c | 18 |
1 files changed, 12 insertions, 6 deletions
diff --git a/lib/libc/gen/usleep.c b/lib/libc/gen/usleep.c index 85c75a4..0bf2948 100644 --- a/lib/libc/gen/usleep.c +++ b/lib/libc/gen/usleep.c @@ -66,7 +66,7 @@ usleep(useconds) time_to_sleep.tv_nsec = (useconds % 1000000) * 1000; time_to_sleep.tv_sec = useconds / 1000000; do { - nanosleep(&time_to_sleep, &time_remaining); + (void)nanosleep(&time_to_sleep, &time_remaining); time_to_sleep = time_remaining; } while (time_to_sleep.tv_sec != 0 || time_to_sleep.tv_nsec != 0); @@ -85,7 +85,8 @@ usleep(useconds) /* Block SIGALRM while fiddling with it */ sigemptyset(&mask); sigaddset(&mask, SIGALRM); - sigprocmask(SIG_BLOCK, &mask, &omask); + if (sigprocmask(SIG_BLOCK, &mask, &omask)) + return; alarm_termination = 0; @@ -99,7 +100,11 @@ usleep(useconds) */ memset(&act, 0, sizeof(act)); act.sa_handler = sleephandler; - sigaction(SIGALRM, &act, &oact); + if (sigaction(SIGALRM, &act, &oact)) { + (void)sigprocmask(SIG_SETMASK, &omask, + (sigset_t *)0); + return; + } } /* @@ -111,7 +116,8 @@ usleep(useconds) * gets what it asks for. */ do { - signanosleep(&time_to_sleep, &time_remaining, &omask); + (void)signanosleep(&time_to_sleep, &time_remaining, + &omask); time_to_sleep = time_remaining; } while (!alarm_termination && (time_to_sleep.tv_sec != 0 || @@ -119,8 +125,8 @@ usleep(useconds) if (!alarm_blocked) { /* Unwind */ - sigaction(SIGALRM, &oact, (struct sigaction *)0); - sigprocmask(SIG_SETMASK, &omask, (sigset_t *)0); + (void)sigaction(SIGALRM, &oact, (struct sigaction *)0); + (void)sigprocmask(SIG_SETMASK, &omask, (sigset_t *)0); } } #endif /* _THREAD_SAFE */ |
