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Tom Rini83d290c2018-05-06 17:58:06 -04001/* SPDX-License-Identifier: GPL-2.0 */
Stephen Warren045fa1e2012-10-22 06:43:51 +00002/*
3 * Copyright (c) 2012, NVIDIA CORPORATION. All rights reserved.
Stephen Warren045fa1e2012-10-22 06:43:51 +00004 */
5#ifndef _FS_H
6#define _FS_H
7
8#include <common.h>
9
10#define FS_TYPE_ANY 0
11#define FS_TYPE_FAT 1
12#define FS_TYPE_EXT 2
Simon Glass92ccc962012-12-26 09:53:35 +000013#define FS_TYPE_SANDBOX 3
Hans de Goede251cee02015-09-17 18:46:58 -040014#define FS_TYPE_UBIFS 4
Marek BehĂșn0c936ee2017-09-03 17:00:29 +020015#define FS_TYPE_BTRFS 5
Stephen Warren045fa1e2012-10-22 06:43:51 +000016
17/*
18 * Tell the fs layer which block device an partition to use for future
19 * commands. This also internally identifies the filesystem that is present
20 * within the partition. The identification process may be limited to a
21 * specific filesystem type by passing FS_* in the fstype parameter.
22 *
23 * Returns 0 on success.
24 * Returns non-zero if there is an error accessing the disk or partition, or
25 * no known filesystem type could be recognized on it.
26 */
27int fs_set_blk_dev(const char *ifname, const char *dev_part_str, int fstype);
28
29/*
Rob Clark4bbcc962017-09-09 13:15:55 -040030 * fs_set_blk_dev_with_part - Set current block device + partition
31 *
32 * Similar to fs_set_blk_dev(), but useful for cases where you already
33 * know the blk_desc and part number.
34 *
35 * Returns 0 on success.
36 * Returns non-zero if invalid partition or error accessing the disk.
37 */
38int fs_set_blk_dev_with_part(struct blk_desc *desc, int part);
39
40/*
Stephen Warren045fa1e2012-10-22 06:43:51 +000041 * Print the list of files on the partition previously set by fs_set_blk_dev(),
42 * in directory "dirname".
43 *
44 * Returns 0 on success. Returns non-zero on error.
45 */
46int fs_ls(const char *dirname);
47
48/*
Stephen Warren61529162014-02-03 13:21:00 -070049 * Determine whether a file exists
50 *
51 * Returns 1 if the file exists, 0 if it doesn't exist.
52 */
53int fs_exists(const char *filename);
54
55/*
Suriyan Ramasamid455d872014-11-17 14:39:38 -080056 * fs_size - Determine a file's size
Stephen Warrencf659812014-06-11 12:47:26 -060057 *
Suriyan Ramasamid455d872014-11-17 14:39:38 -080058 * @filename: Name of the file
59 * @size: Size of file
60 * @return 0 if ok with valid *size, negative on error
Stephen Warrencf659812014-06-11 12:47:26 -060061 */
Suriyan Ramasamid455d872014-11-17 14:39:38 -080062int fs_size(const char *filename, loff_t *size);
Stephen Warrencf659812014-06-11 12:47:26 -060063
64/*
Suriyan Ramasamid455d872014-11-17 14:39:38 -080065 * fs_read - Read file from the partition previously set by fs_set_blk_dev()
66 * Note that not all filesystem types support either/both offset!=0 or len!=0.
Stephen Warren045fa1e2012-10-22 06:43:51 +000067 *
Suriyan Ramasamid455d872014-11-17 14:39:38 -080068 * @filename: Name of file to read from
69 * @addr: The address to read into
70 * @offset: The offset in file to read from
71 * @len: The number of bytes to read. Maybe 0 to read entire file
72 * @actread: Returns the actual number of bytes read
73 * @return 0 if ok with valid *actread, -1 on error conditions
Stephen Warren045fa1e2012-10-22 06:43:51 +000074 */
Suriyan Ramasamid455d872014-11-17 14:39:38 -080075int fs_read(const char *filename, ulong addr, loff_t offset, loff_t len,
76 loff_t *actread);
Stephen Warren045fa1e2012-10-22 06:43:51 +000077
78/*
Suriyan Ramasamid455d872014-11-17 14:39:38 -080079 * fs_write - Write file to the partition previously set by fs_set_blk_dev()
80 * Note that not all filesystem types support offset!=0.
Stephen Warrenbd6fb312014-02-03 13:20:59 -070081 *
Suriyan Ramasamid455d872014-11-17 14:39:38 -080082 * @filename: Name of file to read from
83 * @addr: The address to read into
84 * @offset: The offset in file to read from. Maybe 0 to write to start of file
85 * @len: The number of bytes to write
86 * @actwrite: Returns the actual number of bytes written
87 * @return 0 if ok with valid *actwrite, -1 on error conditions
Stephen Warrenbd6fb312014-02-03 13:20:59 -070088 */
Suriyan Ramasamid455d872014-11-17 14:39:38 -080089int fs_write(const char *filename, ulong addr, loff_t offset, loff_t len,
90 loff_t *actwrite);
Stephen Warrenbd6fb312014-02-03 13:20:59 -070091
92/*
Rob Clark4bbcc962017-09-09 13:15:55 -040093 * Directory entry types, matches the subset of DT_x in posix readdir()
94 * which apply to u-boot.
95 */
96#define FS_DT_DIR 4 /* directory */
97#define FS_DT_REG 8 /* regular file */
98#define FS_DT_LNK 10 /* symbolic link */
99
100/*
101 * A directory entry, returned by fs_readdir(). Returns information
102 * about the file/directory at the current directory entry position.
103 */
104struct fs_dirent {
105 unsigned type; /* one of FS_DT_x (not a mask) */
106 loff_t size; /* size in bytes */
107 char name[256];
108};
109
110/* Note: fs_dir_stream should be treated as opaque to the user of fs layer */
111struct fs_dir_stream {
112 /* private to fs. layer: */
113 struct blk_desc *desc;
114 int part;
115};
116
117/*
118 * fs_opendir - Open a directory
119 *
120 * @filename: the path to directory to open
121 * @return a pointer to the directory stream or NULL on error and errno
122 * set appropriately
123 */
124struct fs_dir_stream *fs_opendir(const char *filename);
125
126/*
127 * fs_readdir - Read the next directory entry in the directory stream.
128 *
129 * Works in an analogous way to posix readdir(). The previously returned
130 * directory entry is no longer valid after calling fs_readdir() again.
131 * After fs_closedir() is called, the returned directory entry is no
132 * longer valid.
133 *
134 * @dirs: the directory stream
135 * @return the next directory entry (only valid until next fs_readdir() or
136 * fs_closedir() call, do not attempt to free()) or NULL if the end of
137 * the directory is reached.
138 */
139struct fs_dirent *fs_readdir(struct fs_dir_stream *dirs);
140
141/*
142 * fs_closedir - close a directory stream
143 *
144 * @dirs: the directory stream
145 */
146void fs_closedir(struct fs_dir_stream *dirs);
147
148/*
Stephen Warren045fa1e2012-10-22 06:43:51 +0000149 * Common implementation for various filesystem commands, optionally limited
150 * to a specific filesystem type via the fstype parameter.
151 */
Stephen Warrencf659812014-06-11 12:47:26 -0600152int do_size(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
153 int fstype);
Stephen Warrenf9b55e22012-10-31 11:05:07 +0000154int do_load(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
Wolfgang Denkb770e882013-10-05 21:07:25 +0200155 int fstype);
Stephen Warren045fa1e2012-10-22 06:43:51 +0000156int do_ls(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
157 int fstype);
Stephen Warren61529162014-02-03 13:21:00 -0700158int file_exists(const char *dev_type, const char *dev_part, const char *file,
159 int fstype);
Simon Glassa8f6ab52013-04-20 08:42:50 +0000160int do_save(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
Wolfgang Denkb770e882013-10-05 21:07:25 +0200161 int fstype);
Stephen Warren045fa1e2012-10-22 06:43:51 +0000162
Christian Gmeiner59e890e2014-11-12 14:35:04 +0100163/*
164 * Determine the UUID of the specified filesystem and print it. Optionally it is
165 * possible to store the UUID directly in env.
166 */
167int do_fs_uuid(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
168 int fstype);
169
Sjoerd Simons1a1ad8e2015-01-05 18:13:36 +0100170/*
171 * Determine the type of the specified filesystem and print it. Optionally it is
172 * possible to store the type directly in env.
173 */
174int do_fs_type(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]);
175
Stephen Warren045fa1e2012-10-22 06:43:51 +0000176#endif /* _FS_H */