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/*
* Copyright © Canonical Ltd.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 or 3 as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that 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 "make_shm_pool.h"
#include <fcntl.h>
#include <unistd.h>
#include <sys/mman.h>
struct wl_shm_pool*
make_shm_pool(struct wl_shm* shm, int size, void **data)
{
int fd = memfd_create("make_shm_pool", MFD_CLOEXEC);
if (fd < 0) {
return NULL;
}
posix_fallocate(fd, 0, size);
*data = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
if (*data == MAP_FAILED) {
close(fd);
return NULL;
}
struct wl_shm_pool *pool = wl_shm_create_pool(shm, fd, size);
close(fd);
return pool;
}
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