1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
|
/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (c) 2012, NVIDIA CORPORATION. All rights reserved.
*/
#ifndef _FS_H
#define _FS_H
#include <common.h>
#define FS_TYPE_ANY 0
#define FS_TYPE_FAT 1
#define FS_TYPE_EXT 2
#define FS_TYPE_SANDBOX 3
#define FS_TYPE_UBIFS 4
#define FS_TYPE_BTRFS 5
/*
* Tell the fs layer which block device an partition to use for future
* commands. This also internally identifies the filesystem that is present
* within the partition. The identification process may be limited to a
* specific filesystem type by passing FS_* in the fstype parameter.
*
* Returns 0 on success.
* Returns non-zero if there is an error accessing the disk or partition, or
* no known filesystem type could be recognized on it.
*/
int fs_set_blk_dev(const char *ifname, const char *dev_part_str, int fstype);
/*
* fs_set_blk_dev_with_part - Set current block device + partition
*
* Similar to fs_set_blk_dev(), but useful for cases where you already
* know the blk_desc and part number.
*
* Returns 0 on success.
* Returns non-zero if invalid partition or error accessing the disk.
*/
int fs_set_blk_dev_with_part(struct blk_desc *desc, int part);
/**
* fs_get_type_name() - Get type of current filesystem
*
* Return: Pointer to filesystem name
*
* Returns a string describing the current filesystem, or the sentinel
* "unsupported" for any unrecognised filesystem.
*/
const char *fs_get_type_name(void);
/*
* Print the list of files on the partition previously set by fs_set_blk_dev(),
* in directory "dirname".
*
* Returns 0 on success. Returns non-zero on error.
*/
int fs_ls(const char *dirname);
/*
* Determine whether a file exists
*
* Returns 1 if the file exists, 0 if it doesn't exist.
*/
int fs_exists(const char *filename);
/*
* fs_size - Determine a file's size
*
* @filename: Name of the file
* @size: Size of file
* @return 0 if ok with valid *size, negative on error
*/
int fs_size(const char *filename, loff_t *size);
/*
* fs_read - Read file from the partition previously set by fs_set_blk_dev()
* Note that not all filesystem types support either/both offset!=0 or len!=0.
*
* @filename: Name of file to read from
* @addr: The address to read into
* @offset: The offset in file to read from
* @len: The number of bytes to read. Maybe 0 to read entire file
* @actread: Returns the actual number of bytes read
* @return 0 if ok with valid *actread, -1 on error conditions
*/
int fs_read(const char *filename, ulong addr, loff_t offset, loff_t len,
loff_t *actread);
/*
* fs_write - Write file to the partition previously set by fs_set_blk_dev()
* Note that not all filesystem types support offset!=0.
*
* @filename: Name of file to read from
* @addr: The address to read into
* @offset: The offset in file to read from. Maybe 0 to write to start of file
* @len: The number of bytes to write
* @actwrite: Returns the actual number of bytes written
* @return 0 if ok with valid *actwrite, -1 on error conditions
*/
int fs_write(const char *filename, ulong addr, loff_t offset, loff_t len,
loff_t *actwrite);
/*
* Directory entry types, matches the subset of DT_x in posix readdir()
* which apply to u-boot.
*/
#define FS_DT_DIR 4 /* directory */
#define FS_DT_REG 8 /* regular file */
#define FS_DT_LNK 10 /* symbolic link */
/*
* A directory entry, returned by fs_readdir(). Returns information
* about the file/directory at the current directory entry position.
*/
struct fs_dirent {
unsigned type; /* one of FS_DT_x (not a mask) */
loff_t size; /* size in bytes */
char name[256];
};
/* Note: fs_dir_stream should be treated as opaque to the user of fs layer */
struct fs_dir_stream {
/* private to fs. layer: */
struct blk_desc *desc;
int part;
};
/*
* fs_opendir - Open a directory
*
* @filename: the path to directory to open
* @return a pointer to the directory stream or NULL on error and errno
* set appropriately
*/
struct fs_dir_stream *fs_opendir(const char *filename);
/*
* fs_readdir - Read the next directory entry in the directory stream.
*
* Works in an analogous way to posix readdir(). The previously returned
* directory entry is no longer valid after calling fs_readdir() again.
* After fs_closedir() is called, the returned directory entry is no
* longer valid.
*
* @dirs: the directory stream
* @return the next directory entry (only valid until next fs_readdir() or
* fs_closedir() call, do not attempt to free()) or NULL if the end of
* the directory is reached.
*/
struct fs_dirent *fs_readdir(struct fs_dir_stream *dirs);
/*
* fs_closedir - close a directory stream
*
* @dirs: the directory stream
*/
void fs_closedir(struct fs_dir_stream *dirs);
/*
* fs_unlink - delete a file or directory
*
* If a given name is a directory, it will be deleted only if it's empty
*
* @filename: Name of file or directory to delete
* @return 0 on success, -1 on error conditions
*/
int fs_unlink(const char *filename);
/*
* fs_mkdir - Create a directory
*
* @filename: Name of directory to create
* @return 0 on success, -1 on error conditions
*/
int fs_mkdir(const char *filename);
/*
* Common implementation for various filesystem commands, optionally limited
* to a specific filesystem type via the fstype parameter.
*/
int do_size(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
int fstype);
int do_load(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
int fstype);
int do_ls(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
int fstype);
int file_exists(const char *dev_type, const char *dev_part, const char *file,
int fstype);
int do_save(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
int fstype);
int do_rm(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
int fstype);
int do_mkdir(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
int fstype);
/*
* Determine the UUID of the specified filesystem and print it. Optionally it is
* possible to store the UUID directly in env.
*/
int do_fs_uuid(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
int fstype);
/*
* Determine the type of the specified filesystem and print it. Optionally it is
* possible to store the type directly in env.
*/
int do_fs_type(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]);
#endif /* _FS_H */
|
