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-rw-r--r--src/shared/libmount-util.h47
1 files changed, 47 insertions, 0 deletions
diff --git a/src/shared/libmount-util.h b/src/shared/libmount-util.h
new file mode 100644
index 0000000..cf19c56
--- /dev/null
+++ b/src/shared/libmount-util.h
@@ -0,0 +1,47 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+#pragma once
+
+#include <stdio.h>
+
+/* This needs to be after sys/mount.h */
+#include <libmount.h>
+
+#include "macro.h"
+
+DEFINE_TRIVIAL_CLEANUP_FUNC_FULL(struct libmnt_table*, mnt_free_table, NULL);
+DEFINE_TRIVIAL_CLEANUP_FUNC_FULL(struct libmnt_iter*, mnt_free_iter, NULL);
+
+static inline int libmount_parse(
+ const char *path,
+ FILE *source,
+ struct libmnt_table **ret_table,
+ struct libmnt_iter **ret_iter) {
+
+ _cleanup_(mnt_free_tablep) struct libmnt_table *table = NULL;
+ _cleanup_(mnt_free_iterp) struct libmnt_iter *iter = NULL;
+ int r;
+
+ /* Older libmount seems to require this. */
+ assert(!source || path);
+
+ table = mnt_new_table();
+ iter = mnt_new_iter(MNT_ITER_FORWARD);
+ if (!table || !iter)
+ return -ENOMEM;
+
+ /* If source or path are specified, we use on the functions which ignore utab.
+ * Only if both are empty, we use mnt_table_parse_mtab(). */
+
+ if (source)
+ r = mnt_table_parse_stream(table, source, path);
+ else if (path)
+ r = mnt_table_parse_file(table, path);
+ else
+ r = mnt_table_parse_mtab(table, NULL);
+ if (r < 0)
+ return r;
+
+ *ret_table = TAKE_PTR(table);
+ *ret_iter = TAKE_PTR(iter);
+ return 0;
+}