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Stephen Warren045fa1e2012-10-22 06:43:51 +00001/*
2 * Copyright (c) 2012, NVIDIA CORPORATION. All rights reserved.
3 *
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms and conditions of the GNU General Public License,
6 * version 2, as published by the Free Software Foundation.
7 *
8 * This program is distributed in the hope it will be useful, but WITHOUT
9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
11 * more details.
12 *
13 * You should have received a copy of the GNU General Public License
14 * along with this program. If not, see <http://www.gnu.org/licenses/>.
15 */
16#ifndef _FS_H
17#define _FS_H
18
19#include <common.h>
20
21#define FS_TYPE_ANY 0
22#define FS_TYPE_FAT 1
23#define FS_TYPE_EXT 2
Simon Glass92ccc962012-12-26 09:53:35 +000024#define FS_TYPE_SANDBOX 3
Stephen Warren045fa1e2012-10-22 06:43:51 +000025
26/*
27 * Tell the fs layer which block device an partition to use for future
28 * commands. This also internally identifies the filesystem that is present
29 * within the partition. The identification process may be limited to a
30 * specific filesystem type by passing FS_* in the fstype parameter.
31 *
32 * Returns 0 on success.
33 * Returns non-zero if there is an error accessing the disk or partition, or
34 * no known filesystem type could be recognized on it.
35 */
36int fs_set_blk_dev(const char *ifname, const char *dev_part_str, int fstype);
37
38/*
39 * Print the list of files on the partition previously set by fs_set_blk_dev(),
40 * in directory "dirname".
41 *
42 * Returns 0 on success. Returns non-zero on error.
43 */
44int fs_ls(const char *dirname);
45
46/*
Stephen Warren61529162014-02-03 13:21:00 -070047 * Determine whether a file exists
48 *
49 * Returns 1 if the file exists, 0 if it doesn't exist.
50 */
51int fs_exists(const char *filename);
52
53/*
Stephen Warrencf659812014-06-11 12:47:26 -060054 * Determine a file's size
55 *
56 * Returns the file's size in bytes, or a negative value if it doesn't exist.
57 */
58int fs_size(const char *filename);
59
60/*
Stephen Warren045fa1e2012-10-22 06:43:51 +000061 * Read file "filename" from the partition previously set by fs_set_blk_dev(),
62 * to address "addr", starting at byte offset "offset", and reading "len"
63 * bytes. "offset" may be 0 to read from the start of the file. "len" may be
64 * 0 to read the entire file. Note that not all filesystem types support
65 * either/both offset!=0 or len!=0.
66 *
67 * Returns number of bytes read on success. Returns <= 0 on error.
68 */
69int fs_read(const char *filename, ulong addr, int offset, int len);
70
71/*
Stephen Warrenbd6fb312014-02-03 13:20:59 -070072 * Write file "filename" to the partition previously set by fs_set_blk_dev(),
73 * from address "addr", starting at byte offset "offset", and writing "len"
74 * bytes. "offset" may be 0 to write to the start of the file. Note that not
75 * all filesystem types support offset!=0.
76 *
77 * Returns number of bytes read on success. Returns <= 0 on error.
78 */
79int fs_write(const char *filename, ulong addr, int offset, int len);
80
81/*
Stephen Warren045fa1e2012-10-22 06:43:51 +000082 * Common implementation for various filesystem commands, optionally limited
83 * to a specific filesystem type via the fstype parameter.
84 */
Stephen Warrencf659812014-06-11 12:47:26 -060085int do_size(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
86 int fstype);
Stephen Warrenf9b55e22012-10-31 11:05:07 +000087int do_load(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
Wolfgang Denkb770e882013-10-05 21:07:25 +020088 int fstype);
Stephen Warren045fa1e2012-10-22 06:43:51 +000089int do_ls(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
90 int fstype);
Stephen Warren61529162014-02-03 13:21:00 -070091int file_exists(const char *dev_type, const char *dev_part, const char *file,
92 int fstype);
Simon Glassa8f6ab52013-04-20 08:42:50 +000093int do_save(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
Wolfgang Denkb770e882013-10-05 21:07:25 +020094 int fstype);
Stephen Warren045fa1e2012-10-22 06:43:51 +000095
96#endif /* _FS_H */