84 lines
2.0 KiB
C
84 lines
2.0 KiB
C
/*
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* Copyright (c) 2014 Fujitsu Ltd.
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* Author: Xing Gu <gux.fnst@cn.fujitsu.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of version 2 of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it would be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include <unistd.h>
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#include <mntent.h>
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#include <stdio.h>
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#include <string.h>
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#include "test.h"
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/*
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* Check whether a path is on a filesystem that is mounted with
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* specified flags.
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*/
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int tst_path_has_mnt_flags_(void (cleanup_fn)(void),
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const char *path, const char *flags[])
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{
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struct mntent *mnt;
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size_t prefix_max = 0, prefix_len;
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int flags_matched = 0;
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FILE *f;
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int i;
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char *tmpdir = NULL;
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/*
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* Default parameter is test temporary directory
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*/
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if (path == NULL)
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path = tmpdir = tst_get_tmpdir();
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if (access(path, F_OK) == -1) {
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tst_brkm(TBROK | TERRNO, cleanup_fn,
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"tst_path_has_mnt_flags: path %s doesn't exist", path);
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return -1;
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}
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f = setmntent("/proc/mounts", "r");
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if (f == NULL) {
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tst_brkm(TBROK | TERRNO, cleanup_fn,
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"tst_path_has_mnt_flags: failed to open /proc/mounts");
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return -1;
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}
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while ((mnt = getmntent(f))) {
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/* ignore duplicit record for root fs */
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if (!strcmp(mnt->mnt_fsname, "rootfs"))
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continue;
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prefix_len = strlen(mnt->mnt_dir);
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if (strncmp(path, mnt->mnt_dir, prefix_len) == 0
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&& prefix_len > prefix_max) {
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prefix_max = prefix_len;
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flags_matched = 0;
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i = 0;
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while (flags[i] != NULL) {
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if (hasmntopt(mnt, flags[i]) != NULL)
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flags_matched++;
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i++;
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}
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}
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}
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endmntent(f);
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free(tmpdir);
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return flags_matched;
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}
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