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/* vi: set sw=4 ts=4: */
/*
* sigprocmask() for uClibc
*
* Copyright (C) 2000-2004 by Erik Andersen <andersen@codepoet.org>
*
* GNU Library General Public License (LGPL) version 2 or later.
*/
#include "syscalls.h"
#include <signal.h>
#undef sigprocmask
#ifdef __NR_rt_sigprocmask
#define __NR___rt_sigprocmask __NR_rt_sigprocmask
_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
if (set &&
#if (SIG_BLOCK == 0) && (SIG_UNBLOCK == 1) && (SIG_SETMASK == 2)
(((unsigned int) how) > 2)
#else
#warning "compile time assumption violated.. slow path..."
((how != SIG_BLOCK) && (how != SIG_UNBLOCK)
&& (how != SIG_SETMASK))
#endif
) {
__set_errno(EINVAL);
return -1;
}
return __rt_sigprocmask(how, set, oldset, _NSIG / 8);
}
#else
#define __NR___syscall_sigprocmask __NR_sigprocmask
static 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
if (set &&
#if (SIG_BLOCK == 0) && (SIG_UNBLOCK == 1) && (SIG_SETMASK == 2)
(((unsigned int) how) > 2)
#else
#warning "compile time assumption violated.. slow path..."
((how != SIG_BLOCK) && (how != SIG_UNBLOCK)
&& (how != SIG_SETMASK))
#endif
) {
__set_errno(EINVAL);
return -1;
}
return (__syscall_sigprocmask(how, set, oldset));
}
#endif
weak_alias (__sigprocmask, sigprocmask)
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