mirror of
https://github.com/morgan9e/systemd
synced 2026-04-15 00:47:10 +09:00
93f6cee97e
This introduces libmount_parse_mountinfo() and libmount_parse_with_utab(). The former one parses only mountinfo, but the latter one also parse utab. Hopefully this avoids pitfalls like issue #35949.
60 lines
1.7 KiB
C
60 lines
1.7 KiB
C
/* SPDX-License-Identifier: LGPL-2.1-or-later */
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#include <stdio.h>
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#include "libmount-util.h"
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int libmount_parse_full(
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const char *path,
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FILE *source,
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struct libmnt_table **ret_table,
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struct libmnt_iter **ret_iter) {
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_cleanup_(mnt_free_tablep) struct libmnt_table *table = NULL;
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_cleanup_(mnt_free_iterp) struct libmnt_iter *iter = NULL;
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int r;
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/* Older libmount seems to require this. */
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assert(!source || path);
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table = mnt_new_table();
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iter = mnt_new_iter(MNT_ITER_FORWARD);
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if (!table || !iter)
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return -ENOMEM;
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/* If source or path are specified, we use on the functions which ignore utab.
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* Only if both are empty, we use mnt_table_parse_mtab(). */
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if (source)
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r = mnt_table_parse_stream(table, source, path);
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else if (path)
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r = mnt_table_parse_file(table, path);
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else
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r = mnt_table_parse_mtab(table, NULL);
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if (r < 0)
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return r;
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*ret_table = TAKE_PTR(table);
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*ret_iter = TAKE_PTR(iter);
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return 0;
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}
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int libmount_is_leaf(
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struct libmnt_table *table,
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struct libmnt_fs *fs) {
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int r;
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_cleanup_(mnt_free_iterp) struct libmnt_iter *iter_children = NULL;
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iter_children = mnt_new_iter(MNT_ITER_FORWARD);
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if (!iter_children)
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return log_oom();
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/* We care only whether it exists, it is unused */
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_unused_ struct libmnt_fs *child;
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r = mnt_table_next_child_fs(table, iter_children, fs, &child);
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if (r < 0)
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return r;
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return r == 1;
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}
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