1 /* SPDX-License-Identifier: GPL-2.0 */
3 * Copyright (c) 2012, NVIDIA CORPORATION. All rights reserved.
16 #define FS_TYPE_SANDBOX 3
17 #define FS_TYPE_UBIFS 4
18 #define FS_TYPE_BTRFS 5
19 #define FS_TYPE_SQUASHFS 6
20 #define FS_TYPE_EROFS 7
21 #define FS_TYPE_SEMIHOSTING 8
26 * do_fat_fsload - Run the fatload command
28 * @cmdtp: Command information for fatload
29 * @flag: Command flags (CMD_FLAG_...)
30 * @argc: Number of arguments
31 * @argv: List of arguments
32 * Return: result (see enum command_ret_t)
34 int do_fat_fsload(struct cmd_tbl *cmdtp, int flag, int argc,
38 * do_ext2load - Run the ext2load command
40 * @cmdtp: Command information for ext2load
41 * @flag: Command flags (CMD_FLAG_...)
42 * @argc: Number of arguments
43 * @argv: List of arguments
44 * Return: result (see enum command_ret_t)
46 int do_ext2load(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[]);
49 * Tell the fs layer which block device an partition to use for future
50 * commands. This also internally identifies the filesystem that is present
51 * within the partition. The identification process may be limited to a
52 * specific filesystem type by passing FS_* in the fstype parameter.
54 * Returns 0 on success.
55 * Returns non-zero if there is an error accessing the disk or partition, or
56 * no known filesystem type could be recognized on it.
58 int fs_set_blk_dev(const char *ifname, const char *dev_part_str, int fstype);
61 * fs_set_blk_dev_with_part - Set current block device + partition
63 * Similar to fs_set_blk_dev(), but useful for cases where you already
64 * know the blk_desc and part number.
66 * Returns 0 on success.
67 * Returns non-zero if invalid partition or error accessing the disk.
69 int fs_set_blk_dev_with_part(struct blk_desc *desc, int part);
72 * fs_close() - Unset current block device and partition
74 * fs_close() closes the connection to a file system opened with either
75 * fs_set_blk_dev() or fs_set_dev_with_part().
77 * Many file functions implicitly call fs_close(), e.g. fs_closedir(),
78 * fs_exist(), fs_ln(), fs_ls(), fs_mkdir(), fs_read(), fs_size(), fs_write(),
84 * fs_get_type() - Get type of current filesystem
86 * Return: filesystem type
88 * Returns filesystem type representing the current filesystem, or
89 * FS_TYPE_ANY for any unrecognised filesystem.
91 int fs_get_type(void);
94 * fs_get_type_name() - Get type of current filesystem
96 * Return: Pointer to filesystem name
98 * Returns a string describing the current filesystem, or the sentinel
99 * "unsupported" for any unrecognised filesystem.
101 const char *fs_get_type_name(void);
104 * Print the list of files on the partition previously set by fs_set_blk_dev(),
105 * in directory "dirname".
107 * Returns 0 on success. Returns non-zero on error.
109 int fs_ls(const char *dirname);
112 * Determine whether a file exists
114 * Returns 1 if the file exists, 0 if it doesn't exist.
116 int fs_exists(const char *filename);
119 * fs_size - Determine a file's size
121 * @filename: Name of the file
122 * @size: Size of file
123 * Return: 0 if ok with valid *size, negative on error
125 int fs_size(const char *filename, loff_t *size);
128 * fs_read() - read file from the partition previously set by fs_set_blk_dev()
130 * Note that not all filesystem drivers support either or both of offset != 0
133 * @filename: full path of the file to read from
134 * @addr: address of the buffer to write to
135 * @offset: offset in the file from where to start reading
136 * @len: the number of bytes to read. Use 0 to read entire file.
137 * @actread: returns the actual number of bytes read
138 * Return: 0 if OK with valid *actread, -1 on error conditions
140 int fs_read(const char *filename, ulong addr, loff_t offset, loff_t len,
144 * fs_write() - write file to the partition previously set by fs_set_blk_dev()
146 * Note that not all filesystem drivers support offset != 0.
148 * @filename: full path of the file to write to
149 * @addr: address of the buffer to read from
150 * @offset: offset in the file from where to start writing
151 * @len: the number of bytes to write
152 * @actwrite: returns the actual number of bytes written
153 * Return: 0 if OK with valid *actwrite, -1 on error conditions
155 int fs_write(const char *filename, ulong addr, loff_t offset, loff_t len,
159 * Directory entry types, matches the subset of DT_x in posix readdir()
160 * which apply to u-boot.
162 #define FS_DT_DIR 4 /* directory */
163 #define FS_DT_REG 8 /* regular file */
164 #define FS_DT_LNK 10 /* symbolic link */
167 * struct fs_dirent - directory entry
169 * A directory entry, returned by fs_readdir(). Returns information
170 * about the file/directory at the current directory entry position.
173 /** @type: one of FS_DT_x (not a mask) */
175 /** @size: file size */
177 /** @flags: attribute flags (FS_ATTR_*) */
179 /** create_time: time of creation */
180 struct rtc_time create_time;
181 /** access_time: time of last access */
182 struct rtc_time access_time;
183 /** change_time: time of last modification */
184 struct rtc_time change_time;
185 /** name: file name */
189 /* Note: fs_dir_stream should be treated as opaque to the user of fs layer */
190 struct fs_dir_stream {
191 /* private to fs. layer: */
192 struct blk_desc *desc;
197 * fs_opendir - Open a directory
199 * @filename: the path to directory to open
200 * Return: a pointer to the directory stream or NULL on error and errno
203 struct fs_dir_stream *fs_opendir(const char *filename);
206 * fs_readdir - Read the next directory entry in the directory stream.
208 * Works in an analogous way to posix readdir(). The previously returned
209 * directory entry is no longer valid after calling fs_readdir() again.
210 * After fs_closedir() is called, the returned directory entry is no
213 * @dirs: the directory stream
214 * Return: the next directory entry (only valid until next fs_readdir() or
215 * fs_closedir() call, do not attempt to free()) or NULL if the end of
216 * the directory is reached.
218 struct fs_dirent *fs_readdir(struct fs_dir_stream *dirs);
221 * fs_closedir - close a directory stream
223 * @dirs: the directory stream
225 void fs_closedir(struct fs_dir_stream *dirs);
228 * fs_unlink - delete a file or directory
230 * If a given name is a directory, it will be deleted only if it's empty
232 * @filename: Name of file or directory to delete
233 * Return: 0 on success, -1 on error conditions
235 int fs_unlink(const char *filename);
238 * fs_mkdir - Create a directory
240 * @filename: Name of directory to create
241 * Return: 0 on success, -1 on error conditions
243 int fs_mkdir(const char *filename);
246 * Common implementation for various filesystem commands, optionally limited
247 * to a specific filesystem type via the fstype parameter.
249 int do_size(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[],
251 int do_load(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[],
253 int do_ls(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[],
255 int file_exists(const char *dev_type, const char *dev_part, const char *file,
257 int do_save(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[],
259 int do_rm(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[],
261 int do_mkdir(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[],
263 int do_ln(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[],
267 * Determine the UUID of the specified filesystem and print it. Optionally it is
268 * possible to store the UUID directly in env.
270 int do_fs_uuid(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[],
274 * Determine the type of the specified filesystem and print it. Optionally it is
275 * possible to store the type directly in env.
277 int do_fs_type(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[]);
280 * do_fs_types - List supported filesystems.
282 * @cmdtp: Command information for fstypes
283 * @flag: Command flags (CMD_FLAG_...)
284 * @argc: Number of arguments
285 * @argv: List of arguments
286 * Return: result (see enum command_ret_t)
288 int do_fs_types(struct cmd_tbl *cmdtp, int flag, int argc, char * const argv[]);