1 files changed, 83 insertions, 0 deletions
diff --git a/src/kernel/tests/lib/tst_path_has_mnt_flags.c b/src/kernel/tests/lib/tst_path_has_mnt_flags.c
new file mode 100644
index 0000000..154bf41
--- /dev/null
+++ b/src/kernel/tests/lib/tst_path_has_mnt_flags.c
@@ -0,0 +1,83 @@
+/*
+ * Copyright (c) 2014 Fujitsu Ltd.
+ * Author: Xing Gu <gux.fnst@cn.fujitsu.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it would be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include <unistd.h>
+#include <mntent.h>
+#include <stdio.h>
+#include <string.h>
+#include "test.h"
+
+/*
+ * Check whether a path is on a filesystem that is mounted with
+ * specified flags.
+ */
+int tst_path_has_mnt_flags_(void (cleanup_fn)(void),
+		const char *path, const char *flags[])
+{
+	struct mntent *mnt;
+	size_t prefix_max = 0, prefix_len;
+	int flags_matched = 0;
+	FILE *f;
+	int i;
+	char *tmpdir = NULL;
+
+	/*
+	 * Default parameter is test temporary directory
+	 */
+	if (path == NULL)
+		path = tmpdir = tst_get_tmpdir();
+
+	if (access(path, F_OK) == -1) {
+		tst_brkm(TBROK | TERRNO, cleanup_fn,
+			"tst_path_has_mnt_flags: path %s doesn't exist", path);
+		return -1;
+	}
+
+	f = setmntent("/proc/mounts", "r");
+	if (f == NULL) {
+		tst_brkm(TBROK | TERRNO, cleanup_fn,
+			"tst_path_has_mnt_flags: failed to open /proc/mounts");
+		return -1;
+	}
+
+	while ((mnt = getmntent(f))) {
+		/* ignore duplicit record for root fs */
+		if (!strcmp(mnt->mnt_fsname, "rootfs"))
+			continue;
+
+		prefix_len = strlen(mnt->mnt_dir);
+
+		if (strncmp(path, mnt->mnt_dir, prefix_len) == 0
+				&& prefix_len > prefix_max) {
+			prefix_max = prefix_len;
+			flags_matched = 0;
+			i = 0;
+
+			while (flags[i] != NULL) {
+				if (hasmntopt(mnt, flags[i]) != NULL)
+					flags_matched++;
+				i++;
+			}
+		}
+	}
+
+	endmntent(f);
+
+	free(tmpdir);
+
+	return flags_matched;
+}