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