diff options
Diffstat (limited to 'libc')
| -rw-r--r-- | libc/sysdeps/linux/sparc/sigaction.c | 46 |
1 files changed, 16 insertions, 30 deletions
diff --git a/libc/sysdeps/linux/sparc/sigaction.c b/libc/sysdeps/linux/sparc/sigaction.c index 3964ae183..a22ac40af 100644 --- a/libc/sysdeps/linux/sparc/sigaction.c +++ b/libc/sysdeps/linux/sparc/sigaction.c @@ -37,46 +37,32 @@ static void __sigreturn_stub(void); int __libc_sigaction(int sig, const struct sigaction *act, struct sigaction *oact) { int ret; - struct old_kernel_sigaction kact, koact; + struct sigaction kact, koact; unsigned long stub = 0; - int saved_errno = errno; if (act) { - kact.k_sa_handler = act->sa_handler; - /* BUG?! kact.sa_mask is a long, but sigset_t is a vector - /* of longs and it may be bigger (in glibc, it _is_ bigger). - /* Should we do this instead? - /* kact.sa_mask = act->sa_mask.__val[0]; */ - memcpy(&kact.sa_mask, &act->sa_mask, sizeof(sigset_t)); - kact.sa_flags = act->sa_flags; - if (kact.sa_flags & SA_SIGINFO) + kact.sa_handler = act->sa_handler; + memcpy (&kact.sa_mask, &act->sa_mask, sizeof (sigset_t)); + if (((kact.sa_flags = act->sa_flags) & SA_SIGINFO) != 0) stub = (unsigned long) &__rt_sigreturn_stub; else stub = (unsigned long) &__sigreturn_stub; stub -= 8; kact.sa_restorer = NULL; } - /* NB: kernel (as of 2.6.25) will return EINVAL - * if _NSIG / 8 does not match kernel's sizeof(sigset_t) */ - ret = rt_sigaction(sig, - (int)(act ? &kact : NULL), - (int)(oact ? &koact : NULL), - stub, - _NSIG / 8); - - /* BUG?! if ret == -1, we return -1 but do not set errno?! */ - if (ret >= 0 || errno != ENOSYS) { - if (oact && ret >= 0) { - oact->sa_handler = koact.k_sa_handler; - /* maybe oact->sa_mask.__val[0] = koact.sa_mask;? */ - memcpy(&oact->sa_mask, &koact.sa_mask, sizeof(sigset_t)); - oact->sa_flags = koact.sa_flags; - oact->sa_restorer = koact.sa_restorer; - } - return ret; + + /* XXX The size argument hopefully will have to be changed to the + * real size of the user-level sigset_t. */ + ret = INLINE_SYSCALL (rt_sigaction, 5, sig, act ? &kact : 0, + oact ? &koact : 0, stub, _NSIG / 8); + + if (oact && ret >= 0) { + oact->sa_handler = koact.sa_handler; + memcpy (&oact->sa_mask, &koact.sa_mask, sizeof (sigset_t)); + oact->sa_flags = koact.sa_flags; + oact->sa_restorer = koact.sa_restorer; } - __set_errno(saved_errno); - return -1; + return ret; } #ifndef LIBC_SIGACTION |