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/*
* sigaction() for Xtensa uClibc
*
* Copyright (C) 2007, 2008 Tensilica Inc.
*
* Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
*/
#include <errno.h>
#include <signal.h>
#include <sys/syscall.h>
#include <string.h>
#include <bits/kernel_sigaction.h>
#define SA_RESTORER 0x04000000
extern void __default_sa_restorer(void);
int __libc_sigaction(int sig, const struct sigaction *act,
struct sigaction *oact)
{
struct sigaction kact;
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(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
# ifndef __UCLIBC_HAS_THREADS__
strong_alias(__libc_sigaction,sigaction)
libc_hidden_def(sigaction)
# else
weak_alias(__libc_sigaction,sigaction)
libc_hidden_weak(sigaction)
# endif
#endif
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