diff options
Diffstat (limited to 'src/signal/sigprocmask.c')
| -rw-r--r-- | src/signal/sigprocmask.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/src/signal/sigprocmask.c b/src/signal/sigprocmask.c index 1bc5baa6..96d08478 100644 --- a/src/signal/sigprocmask.c +++ b/src/signal/sigprocmask.c @@ -1,4 +1,5 @@ #include <signal.h> +#include <errno.h> #include "syscall.h" #include "libc.h" #include "pthread_impl.h" @@ -11,6 +12,10 @@ int __libc_sigprocmask(int how, const sigset_t *set, sigset_t *old) int __sigprocmask(int how, const sigset_t *set, sigset_t *old) { sigset_t tmp; + if (how > 2U) { + errno = EINVAL; + return -1; + } /* Disallow blocking thread control signals */ if (set && how != SIG_UNBLOCK) { tmp = *set; @@ -22,4 +27,3 @@ int __sigprocmask(int how, const sigset_t *set, sigset_t *old) } weak_alias(__sigprocmask, sigprocmask); -weak_alias(__sigprocmask, pthread_sigmask); |