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/**************************************************************************
*
* Copyright (C) 2018 Chromium.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
**************************************************************************/
#include "util.h"
#include "vtest_shm.h"
#include <stdlib.h>
#include <stdio.h>
#include <errno.h>
#include <fcntl.h>
#include <sys/syscall.h>
#include <unistd.h>
static int memfd_create(const char *name, unsigned int flags)
{
#ifdef __NR_memfd_create
return syscall(__NR_memfd_create, name, flags);
#else
(void)name;
(void)flags;
return -1;
#endif
}
int vtest_new_shm(uint32_t handle, size_t size)
{
int fd, ret;
int length = snprintf(NULL, 0, "vtest-res-%u", handle);
char *str = malloc(length + 1);
snprintf(str, length + 1, "vtest-res-%u", handle);
fd = memfd_create(str, MFD_ALLOW_SEALING);
free(str);
if (fd < 0) {
return report_failed_call("memfd_create", -errno);
}
ret = ftruncate(fd, size);
if (ret < 0) {
close(fd);
return report_failed_call("ftruncate", -errno);
}
return fd;
}
int vtest_shm_check(void)
{
int mfd = memfd_create("test", MFD_ALLOW_SEALING);
if (mfd >= 0) {
close(mfd);
return 1;
}
return 0;
}
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