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