51 lines
1.1 KiB
C
51 lines
1.1 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
|
|
#include <dirent.h>
|
|
#include <errno.h>
|
|
#include <sys/mount.h>
|
|
|
|
#define TST_NO_DEFAULT_MAIN
|
|
#include "tst_test.h"
|
|
#include "tst_fs.h"
|
|
|
|
#define TST_FS_SETUP_OVERLAYFS_MSG "overlayfs is not configured in this kernel"
|
|
#define TST_FS_SETUP_OVERLAYFS_CONFIG "lowerdir="OVL_LOWER",upperdir="OVL_UPPER",workdir="OVL_WORK
|
|
|
|
void create_overlay_dirs(void)
|
|
{
|
|
DIR *dir = opendir(OVL_LOWER);
|
|
if (dir == NULL) {
|
|
SAFE_MKDIR(OVL_LOWER, 0755);
|
|
SAFE_MKDIR(OVL_UPPER, 0755);
|
|
SAFE_MKDIR(OVL_WORK, 0755);
|
|
SAFE_MKDIR(OVL_MNT, 0755);
|
|
return;
|
|
}
|
|
closedir(dir);
|
|
}
|
|
|
|
int mount_overlay(const char *file, const int lineno, int skip)
|
|
{
|
|
int ret;
|
|
|
|
create_overlay_dirs();
|
|
ret = mount("overlay", OVL_MNT, "overlay", 0,
|
|
TST_FS_SETUP_OVERLAYFS_CONFIG);
|
|
if (ret == 0)
|
|
return 0;
|
|
|
|
if (errno == ENODEV) {
|
|
if (skip) {
|
|
tst_brk_(file, lineno, TCONF,
|
|
TST_FS_SETUP_OVERLAYFS_MSG);
|
|
} else {
|
|
tst_res_(file, lineno, TINFO,
|
|
TST_FS_SETUP_OVERLAYFS_MSG);
|
|
}
|
|
} else {
|
|
tst_brk_(file, lineno, TBROK | TERRNO,
|
|
"overlayfs mount failed");
|
|
}
|
|
return ret;
|
|
}
|