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/*
* Copyright (C) 2008 The Android Open Source Project
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <errno.h>
#include <signal.h>
#include "private/sigrtmin.h"
#include "private/SigSetConverter.h"
extern "C" int __rt_sigprocmask(int, const sigset64_t*, sigset64_t*, size_t);
//
// These need to be kept separate from pthread_sigmask, sigblock, sigsetmask,
// sighold, and sigset because libsigchain only intercepts sigprocmask so we
// can't allow clang to decide to inline sigprocmask.
//
int sigprocmask(int how,
const sigset_t* bionic_new_set,
sigset_t* bionic_old_set) __attribute__((__noinline__)) {
SigSetConverter new_set;
sigset64_t* new_set_ptr = nullptr;
if (bionic_new_set != nullptr) {
sigemptyset64(&new_set.sigset64);
new_set.sigset = *bionic_new_set;
new_set_ptr = &new_set.sigset64;
}
SigSetConverter old_set;
if (sigprocmask64(how, new_set_ptr, &old_set.sigset64) == -1) {
return -1;
}
if (bionic_old_set != nullptr) {
*bionic_old_set = old_set.sigset;
}
return 0;
}
int sigprocmask64(int how,
const sigset64_t* new_set,
sigset64_t* old_set) __attribute__((__noinline__)) {
// how is only checked for validity if new_set is provided.
if (new_set && how != SIG_BLOCK && how != SIG_UNBLOCK && how != SIG_SETMASK) {
errno = EINVAL;
return -1;
}
sigset64_t mutable_new_set;
sigset64_t* mutable_new_set_ptr = nullptr;
if (new_set) {
mutable_new_set = filter_reserved_signals(*new_set, how);
mutable_new_set_ptr = &mutable_new_set;
}
return __rt_sigprocmask(how, mutable_new_set_ptr, old_set, sizeof(*new_set));
}
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