# Makefile for uClibc # # Copyright (C) 2000-2005 Erik Andersen # # Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. # CSRC-y := brk.c __syscall_error.c sigaction.c SSRC-y := \ __longjmp.S setjmp.S bsd-setjmp.S bsd-_setjmp.S \ syscall.S urem.S udiv.S umul.S sdiv.S rem.S pipe.S SSRC-$(if $(UCLIBC_HAS_THREADS_NATIVE),,y) += fork.S vfork.S clone.S # check weather __LONG_DOUBLE_128__ is defined (long double support) UCLIBC_SPARC_HAS_LONG_DOUBLE=$(shell if [ "x`$(CC) -E -dM -xc /dev/null 2>&1 | grep __LONG_DOUBLE_128__`" != "x" ]; then echo "y"; fi) ifeq ($(UCLIBC_SPARC_HAS_LONG_DOUBLE),y) CSRC-y += $(addprefix soft-fp/, \ q_div.c q_fle.c q_mul.c q_qtoll.c q_stoq.c \ mp_clz_tab.c q_dtoq.c q_flt.c q_neg.c q_qtos.c q_sub.c \ q_add.c q_feq.c q_fne.c q_qtod.c q_qtou.c q_ulltoq.c \ q_cmp.c q_fge.c q_itoq.c q_qtoull.c q_util.c \ q_cmpe.c q_fgt.c q_lltoq.c q_qtoi.c q_sqrt.c q_utoq.c) else CSRC-y += qp_ops.c endif lass='sub right'>
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path: root/libc/sysdeps/linux/common/sigprocmask.c
blob: 011d7b36711585224bd8037236c9258fed1f116f (plain) 
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/* vi: set sw=4 ts=4: */
/*
 * sigprocmask() for uClibc
 *
 * Copyright (C) 2000-2006 Erik Andersen <andersen@uclibc.org>
 *
 * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
 */

#include <sys/syscall.h>

#if defined __USE_POSIX
#include <signal.h>

#undef sigprocmask

libc_hidden_proto(sigprocmask)

#ifdef __NR_rt_sigprocmask

# define __NR___rt_sigprocmask __NR_rt_sigprocmask
static __always_inline
_syscall4(int, __rt_sigprocmask, int, how, const sigset_t *, set,
		  sigset_t *, oldset, size_t, size)

int sigprocmask(int how, const sigset_t * set, sigset_t * oldset)
{
#ifdef SIGCANCEL
	sigset_t local_newmask;

	/*
	 * The only thing we have to make sure here is that SIGCANCEL and
	 * SIGSETXID are not blocked.
	 */
	if (set != NULL && (__builtin_expect (__sigismember (set, SIGCANCEL), 0)
# ifdef SIGSETXID
		|| __builtin_expect (__sigismember (set, SIGSETXID), 0)
# endif
		))
	{
		local_newmask = *set;
		__sigdelset (&local_newmask, SIGCANCEL);
# ifdef SIGSETXID
		__sigdelset (&local_newmask, SIGSETXID);
# endif
		set = &local_newmask;
	}
#endif

	return __rt_sigprocmask(how, set, oldset, _NSIG / 8);
}


#else

# define __NR___syscall_sigprocmask __NR_sigprocmask
static __always_inline
_syscall3(int, __syscall_sigprocmask, int, how, const sigset_t *, set,
		  sigset_t *, oldset)

int sigprocmask(int how, const sigset_t * set, sigset_t * oldset)
{
#ifdef SIGCANCEL
	sigset_t local_newmask;

	/*
	 * The only thing we have to make sure here is that SIGCANCEL and
	 * SIGSETXID are not blocked.
	 */
	if (set != NULL && (__builtin_expect (__sigismember (set, SIGCANCEL), 0)
# ifdef SIGSETXID
		|| __builtin_expect (__sigismember (set, SIGSETXID), 0)
# endif
		))
	{
		local_newmask = *set;
		__sigdelset (&local_newmask, SIGCANCEL);
# ifdef SIGSETXID
		__sigdelset (&local_newmask, SIGSETXID);
# endif
		set = &local_newmask;
	}
#endif

	return (__syscall_sigprocmask(how, set, oldset));
}
#endif
libc_hidden_def(sigprocmask)
#endif
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