Line data    Source code

       1             : /* SPDX-License-Identifier: LGPL-2.1+ */
       2             : #pragma once
       3             : 
       4             : #include <stdio.h>
       5             : 
       6             : /* This needs to be after sys/mount.h */
       7             : #include <libmount.h>
       8             : 
       9             : #include "macro.h"
      10             : 
      11          40 : DEFINE_TRIVIAL_CLEANUP_FUNC(struct libmnt_table*, mnt_free_table);
      12          40 : DEFINE_TRIVIAL_CLEANUP_FUNC(struct libmnt_iter*, mnt_free_iter);
      13             : 
      14          19 : static inline int libmount_parse(
      15             :                 const char *path,
      16             :                 FILE *source,
      17             :                 struct libmnt_table **ret_table,
      18             :                 struct libmnt_iter **ret_iter) {
      19             : 
      20          19 :         _cleanup_(mnt_free_tablep) struct libmnt_table *table = NULL;
      21          19 :         _cleanup_(mnt_free_iterp) struct libmnt_iter *iter = NULL;
      22             :         int r;
      23             : 
      24             :         /* Older libmount seems to require this. */
      25          19 :         assert(!source || path);
      26             : 
      27          19 :         table = mnt_new_table();
      28          19 :         iter = mnt_new_iter(MNT_ITER_FORWARD);
      29          19 :         if (!table || !iter)
      30           0 :                 return -ENOMEM;
      31             : 
      32             :         /* If source or path are specified, we use on the functions which ignore utab.
      33             :          * Only if both are empty, we use mnt_table_parse_mtab(). */
      34             : 
      35          19 :         if (source)
      36           4 :                 r = mnt_table_parse_stream(table, source, path);
      37          15 :         else if (path)
      38           3 :                 r = mnt_table_parse_file(table, path);
      39             :         else
      40          12 :                 r = mnt_table_parse_mtab(table, NULL);
      41          19 :         if (r < 0)
      42           0 :                 return r;
      43             : 
      44          19 :         *ret_table = TAKE_PTR(table);
      45          19 :         *ret_iter = TAKE_PTR(iter);
      46          19 :         return 0;
      47             : }