Line data Source code
1 : /*
2 : * Copyright (C) 2016 Red Hat, Inc.
3 : *
4 : * This library is free software; you can redistribute it and/or
5 : * modify it under the terms of the GNU Lesser General Public
6 : * License as published by the Free Software Foundation; either
7 : * version 2.1 of the License, or (at your option) any later version.
8 : *
9 : * This library is distributed in the hope that it will be useful,
10 : * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 : * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 : * Lesser General Public License for more details.
13 : *
14 : * You should have received a copy of the GNU Lesser General Public
15 : * License along with this library; if not, see <http://www.gnu.org/licenses/>.
16 : *
17 : * Author: Vratislav Podzimek <vpodzime@redhat.com>
18 : */
19 :
20 : #include <blockdev/utils.h>
21 : #include <libmount/libmount.h>
22 :
23 : #include <check_deps.h>
24 : #include "fs.h"
25 :
26 : /**
27 : * SECTION: fs
28 : * @short_description: plugin for operations with file systems
29 : * @title: FS
30 : * @include: fs.h
31 : *
32 : * A plugin for operations with file systems
33 : */
34 :
35 : extern gboolean bd_fs_ext_is_tech_avail (BDFSTech tech, guint64 mode, GError **error);
36 : extern gboolean bd_fs_xfs_is_tech_avail (BDFSTech tech, guint64 mode, GError **error);
37 : extern gboolean bd_fs_vfat_is_tech_avail (BDFSTech tech, guint64 mode, GError **error);
38 : extern gboolean bd_fs_ntfs_is_tech_avail (BDFSTech tech, guint64 mode, GError **error);
39 : extern gboolean bd_fs_f2fs_is_tech_avail (BDFSTech tech, guint64 mode, GError **error);
40 : extern gboolean bd_fs_nilfs2_is_tech_avail (BDFSTech tech, guint64 mode, GError **error);
41 : extern gboolean bd_fs_exfat_is_tech_avail (BDFSTech tech, guint64 mode, GError **error);
42 : extern gboolean bd_fs_btrfs_is_tech_avail (BDFSTech tech, guint64 mode, GError **error);
43 : extern gboolean bd_fs_udf_is_tech_avail (BDFSTech tech, guint64 mode, GError **error);
44 :
45 : /**
46 : * bd_fs_error_quark: (skip)
47 : */
48 0 : GQuark bd_fs_error_quark (void)
49 : {
50 0 : return g_quark_from_static_string ("g-bd-fs-error-quark");
51 : }
52 :
53 : /**
54 : * bd_fs_init:
55 : *
56 : * Initializes the plugin. **This function is called automatically by the
57 : * library's initialization functions.**
58 : *
59 : */
60 102 : gboolean bd_fs_init (void) {
61 : /* tell libmount to honour the LIBMOUNT_DEBUG env var */
62 102 : mnt_init_debug (0);
63 :
64 102 : return TRUE;
65 : }
66 :
67 : /**
68 : * bd_fs_close:
69 : *
70 : * Cleans up after the plugin. **This function is called automatically by the
71 : * library's functions that unload it.**
72 : *
73 : */
74 102 : void bd_fs_close (void) {
75 : /* nothing to do here */
76 102 : }
77 :
78 : /**
79 : * bd_fs_is_tech_avail:
80 : * @tech: the queried tech
81 : * @mode: a bit mask of queried modes of operation (#BDFSTechMode) for @tech
82 : * @error: (out) (optional): place to store error (details about why the @tech-@mode combination is not available)
83 : *
84 : * Returns: whether the @tech-@mode combination is available -- supported by the
85 : * plugin implementation and having all the runtime dependencies available
86 : */
87 624 : gboolean bd_fs_is_tech_avail (BDFSTech tech, guint64 mode, GError **error) {
88 624 : if (tech == BD_FS_TECH_GENERIC || tech == BD_FS_TECH_MOUNT)
89 : /* @mode is ignored, there are no special modes for GENERIC and MOUNT technologies */
90 : /* generic features and mounting are supported by this plugin without any dependencies */
91 0 : return TRUE;
92 :
93 624 : if (tech > BD_FS_LAST_FS) {
94 0 : g_set_error (error, BD_FS_ERROR, BD_FS_ERROR_TECH_UNAVAIL, "Unknown technology");
95 0 : return FALSE;
96 : }
97 :
98 624 : switch (tech) {
99 21 : case BD_FS_TECH_EXT2:
100 : case BD_FS_TECH_EXT3:
101 : case BD_FS_TECH_EXT4:
102 21 : return bd_fs_ext_is_tech_avail (tech, mode, error);
103 8 : case BD_FS_TECH_XFS:
104 8 : return bd_fs_xfs_is_tech_avail (tech, mode, error);
105 9 : case BD_FS_TECH_VFAT:
106 9 : return bd_fs_vfat_is_tech_avail (tech, mode, error);
107 100 : case BD_FS_TECH_NTFS:
108 100 : return bd_fs_ntfs_is_tech_avail (tech, mode, error);
109 103 : case BD_FS_TECH_F2FS:
110 103 : return bd_fs_f2fs_is_tech_avail (tech, mode, error);
111 99 : case BD_FS_TECH_NILFS2:
112 99 : return bd_fs_nilfs2_is_tech_avail (tech, mode, error);
113 100 : case BD_FS_TECH_EXFAT:
114 100 : return bd_fs_exfat_is_tech_avail (tech, mode, error);
115 92 : case BD_FS_TECH_BTRFS:
116 92 : return bd_fs_btrfs_is_tech_avail (tech, mode, error);
117 92 : case BD_FS_TECH_UDF:
118 92 : return bd_fs_udf_is_tech_avail (tech, mode, error);
119 : /* coverity[dead_error_begin] */
120 0 : default:
121 : /* this should never be reached (see the comparison with LAST_FS
122 : above), but better safe than sorry */
123 0 : g_set_error (error, BD_FS_ERROR, BD_FS_ERROR_TECH_UNAVAIL, "Unknown technology");
124 0 : return FALSE;
125 : }
126 : }
|
