83 lines
2.9 KiB
C++
83 lines
2.9 KiB
C++
/*
|
|
* 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 <platform/bionic/reserved_signals.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));
|
|
}
|