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| // SPDX-License-Identifier: GPL-2.0
| #define _GNU_SOURCE
| #define __EXPORTED_HEADERS__
|
| #include <stdio.h>
| #include <stdlib.h>
| #include <linux/fcntl.h>
| #include <linux/memfd.h>
| #include <unistd.h>
| #include <sys/syscall.h>
|
| #include "common.h"
|
| int hugetlbfs_test = 0;
|
| /*
| * Copied from mlock2-tests.c
| */
| unsigned long default_huge_page_size(void)
| {
| unsigned long hps = 0;
| char *line = NULL;
| size_t linelen = 0;
| FILE *f = fopen("/proc/meminfo", "r");
|
| if (!f)
| return 0;
| while (getline(&line, &linelen, f) > 0) {
| if (sscanf(line, "Hugepagesize: %lu kB", &hps) == 1) {
| hps <<= 10;
| break;
| }
| }
|
| free(line);
| fclose(f);
| return hps;
| }
|
| int sys_memfd_create(const char *name, unsigned int flags)
| {
| if (hugetlbfs_test)
| flags |= MFD_HUGETLB;
|
| return syscall(__NR_memfd_create, name, flags);
| }
|
|
