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-rw-r--r--libc/sysdeps/linux/xtensa/sigaction.c47
1 files changed, 10 insertions, 37 deletions
diff --git a/libc/sysdeps/linux/xtensa/sigaction.c b/libc/sysdeps/linux/xtensa/sigaction.c
index 123cb5085..302d13305 100644
--- a/libc/sysdeps/linux/xtensa/sigaction.c
+++ b/libc/sysdeps/linux/xtensa/sigaction.c
@@ -15,52 +15,25 @@
#define SA_RESTORER 0x04000000
-extern void __default_sa_restorer (void);
+extern void __default_sa_restorer(void);
-/* Experimentally off - libc_hidden_proto(memcpy) */
-
-int __libc_sigaction (int signum, const struct sigaction *act,
+int __libc_sigaction(int sig, const struct sigaction *act,
struct sigaction *oact)
{
- struct kernel_sigaction kact, koact;
- int result;
- enum {
- SIGSET_MIN_SIZE = sizeof(kact.sa_mask) < sizeof(act->sa_mask)
- ? sizeof(kact.sa_mask) : sizeof(act->sa_mask)
- };
-
- if (act) {
- kact.k_sa_handler = act->sa_handler;
- memcpy(&kact.sa_mask, &act->sa_mask, SIGSET_MIN_SIZE);
- kact.sa_flags = act->sa_flags;
+ struct sigaction kact;
- if (kact.sa_flags & SA_RESTORER) {
- kact.sa_restorer = act->sa_restorer;
- } else {
- kact.sa_restorer = __default_sa_restorer;
- kact.sa_flags |= SA_RESTORER;
- }
+ if (act && !(act->sa_flags & SA_RESTORER)) {
+ memcpy(&kact, act, sizeof(kact));
+ kact.sa_restorer = __default_sa_restorer;
+ kact.sa_flags |= SA_RESTORER;
+ act = &kact;
}
-
/* NB: kernel (as of 2.6.25) will return EINVAL
- * if sizeof(kact.sa_mask) does not match kernel's sizeof(sigset_t) */
- result = __syscall_rt_sigaction(signum,
- act ? &kact : NULL,
- oact ? &koact : NULL,
- sizeof(kact.sa_mask));
-
- if (oact && result >= 0) {
- oact->sa_handler = koact.k_sa_handler;
- memcpy(&oact->sa_mask, &koact.sa_mask, SIGSET_MIN_SIZE);
- oact->sa_flags = koact.sa_flags;
- oact->sa_restorer = koact.sa_restorer;
- }
-
- return result;
+ * if sizeof(act->sa_mask) does not match kernel's sizeof(sigset_t) */
+ return __syscall_rt_sigaction(sig, act, oact, sizeof(act->sa_mask));
}
#ifndef LIBC_SIGACTION
-libc_hidden_proto(sigaction)
weak_alias(__libc_sigaction, sigaction)
libc_hidden_weak(sigaction)
#endif