mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
synced 2024-12-22 18:32:05 +00:00
49 lines
1.4 KiB
C++
49 lines
1.4 KiB
C++
/*
|
|
* Copyright (c) Atmosphère-NX
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms and conditions of the GNU General Public License,
|
|
* version 2, as published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope it will be useful, but WITHOUT
|
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
|
* more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
#include <stratosphere.hpp>
|
|
#include "os_giant_lock.os.linux.hpp"
|
|
#include <sys/syscall.h>
|
|
#include <unistd.h>
|
|
#include <fcntl.h>
|
|
|
|
namespace ams::os::impl {
|
|
|
|
#define AMS_OS_IMPL_GIANT_LOCK_FILE_PATH "/tmp/.ams_os_giant_lock"
|
|
|
|
void GiantLockLinuxImpl::Lock() {
|
|
m_fd = ::open(AMS_OS_IMPL_GIANT_LOCK_FILE_PATH, O_RDWR | O_CREAT | O_CLOEXEC, S_IRUSR | S_IWUSR);
|
|
AMS_ABORT_UNLESS(m_fd >= 0);
|
|
|
|
while (::lockf(m_fd, F_LOCK, 0) < 0) {
|
|
AMS_ABORT_UNLESS(errno == EINTR);
|
|
}
|
|
}
|
|
|
|
void GiantLockLinuxImpl::Unlock() {
|
|
AMS_ASSERT(m_fd >= 0);
|
|
|
|
while (::lockf(m_fd, F_ULOCK, 0) < 0) {
|
|
AMS_ABORT_UNLESS(errno == EINTR);
|
|
}
|
|
|
|
while (::close(m_fd) < 0) {
|
|
AMS_ABORT_UNLESS(errno == EINTR);
|
|
}
|
|
|
|
m_fd = os::InvalidNativeHandle;
|
|
}
|
|
|
|
}
|