blob: ffb6ce7ada64f0498b46eac89d6a335bea83c488
1 | /* |
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 |
24 | #define FS_TYPE_SANDBOX 3 |
25 | |
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 | */ |
36 | int 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 | */ |
44 | int fs_ls(const char *dirname); |
45 | |
46 | /* |
47 | * Determine whether a file exists |
48 | * |
49 | * Returns 1 if the file exists, 0 if it doesn't exist. |
50 | */ |
51 | int fs_exists(const char *filename); |
52 | |
53 | /* |
54 | * fs_size - Determine a file's size |
55 | * |
56 | * @filename: Name of the file |
57 | * @size: Size of file |
58 | * @return 0 if ok with valid *size, negative on error |
59 | */ |
60 | int fs_size(const char *filename, loff_t *size); |
61 | |
62 | /* |
63 | * fs_read - Read file from the partition previously set by fs_set_blk_dev() |
64 | * Note that not all filesystem types support either/both offset!=0 or len!=0. |
65 | * |
66 | * @filename: Name of file to read from |
67 | * @addr: The address to read into |
68 | * @offset: The offset in file to read from |
69 | * @len: The number of bytes to read. Maybe 0 to read entire file |
70 | * @actread: Returns the actual number of bytes read |
71 | * @return 0 if ok with valid *actread, -1 on error conditions |
72 | */ |
73 | int fs_read(const char *filename, ulong addr, loff_t offset, loff_t len, |
74 | loff_t *actread); |
75 | |
76 | /* |
77 | * fs_write - Write file to the partition previously set by fs_set_blk_dev() |
78 | * Note that not all filesystem types support offset!=0. |
79 | * |
80 | * @filename: Name of file to read from |
81 | * @addr: The address to read into |
82 | * @offset: The offset in file to read from. Maybe 0 to write to start of file |
83 | * @len: The number of bytes to write |
84 | * @actwrite: Returns the actual number of bytes written |
85 | * @return 0 if ok with valid *actwrite, -1 on error conditions |
86 | */ |
87 | int fs_write(const char *filename, ulong addr, loff_t offset, loff_t len, |
88 | loff_t *actwrite); |
89 | |
90 | /* |
91 | * Common implementation for various filesystem commands, optionally limited |
92 | * to a specific filesystem type via the fstype parameter. |
93 | */ |
94 | int do_size(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[], |
95 | int fstype); |
96 | int do_load(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[], |
97 | int fstype); |
98 | int do_ls(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[], |
99 | int fstype); |
100 | int file_exists(const char *dev_type, const char *dev_part, const char *file, |
101 | int fstype); |
102 | int do_save(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[], |
103 | int fstype); |
104 | |
105 | /* |
106 | * Determine the UUID of the specified filesystem and print it. Optionally it is |
107 | * possible to store the UUID directly in env. |
108 | */ |
109 | int do_fs_uuid(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[], |
110 | int fstype); |
111 | |
112 | #endif /* _FS_H */ |
113 |