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 and 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_type() - Tell fs layer which filesystem type is used
63 * This is needed when reading from a non-block device such as sandbox. It does
64 * a similar job to fs_set_blk_dev() but just sets the filesystem type instead
65 * of detecting it and loading it on the block device
67 * @type: Filesystem type to use (FS_TYPE...)
69 void fs_set_type(int type);
72 * fs_set_blk_dev_with_part - Set current block device + partition
74 * Similar to fs_set_blk_dev(), but useful for cases where you already
75 * know the blk_desc and part number.
77 * Returns 0 on success.
78 * Returns non-zero if invalid partition or error accessing the disk.
80 int fs_set_blk_dev_with_part(struct blk_desc *desc, int part);
83 * fs_close() - Unset current block device and partition
85 * fs_close() closes the connection to a file system opened with either
86 * fs_set_blk_dev() or fs_set_dev_with_part().
88 * Many file functions implicitly call fs_close(), e.g. fs_closedir(),
89 * fs_exist(), fs_ln(), fs_ls(), fs_mkdir(), fs_read(), fs_size(), fs_write(),
95 * fs_get_type() - Get type of current filesystem
97 * Return: filesystem type
99 * Returns filesystem type representing the current filesystem, or
100 * FS_TYPE_ANY for any unrecognised filesystem.
102 int fs_get_type(void);
105 * fs_get_type_name() - Get type of current filesystem
107 * Return: Pointer to filesystem name
109 * Returns a string describing the current filesystem, or the sentinel
110 * "unsupported" for any unrecognised filesystem.
112 const char *fs_get_type_name(void);
115 * Print the list of files on the partition previously set by fs_set_blk_dev(),
116 * in directory "dirname".
118 * Returns 0 on success. Returns non-zero on error.
120 int fs_ls(const char *dirname);
123 * Determine whether a file exists
125 * Returns 1 if the file exists, 0 if it doesn't exist.
127 int fs_exists(const char *filename);
130 * fs_size - Determine a file's size
132 * @filename: Name of the file
133 * @size: Size of file
134 * Return: 0 if ok with valid *size, negative on error
136 int fs_size(const char *filename, loff_t *size);
139 * fs_read() - read file from the partition previously set by fs_set_blk_dev()
141 * Note that not all filesystem drivers support either or both of offset != 0
144 * @filename: full path of the file to read from
145 * @addr: address of the buffer to write to
146 * @offset: offset in the file from where to start reading
147 * @len: the number of bytes to read. Use 0 to read entire file.
148 * @actread: returns the actual number of bytes read
149 * Return: 0 if OK with valid *actread, -1 on error conditions
151 int fs_read(const char *filename, ulong addr, loff_t offset, loff_t len,
155 * fs_write() - write file to the partition previously set by fs_set_blk_dev()
157 * Note that not all filesystem drivers support offset != 0.
159 * @filename: full path of the file to write to
160 * @addr: address of the buffer to read from
161 * @offset: offset in the file from where to start writing
162 * @len: the number of bytes to write
163 * @actwrite: returns the actual number of bytes written
164 * Return: 0 if OK with valid *actwrite, -1 on error conditions
166 int fs_write(const char *filename, ulong addr, loff_t offset, loff_t len,
170 * Directory entry types, matches the subset of DT_x in posix readdir()
171 * which apply to u-boot.
173 #define FS_DT_DIR 4 /* directory */
174 #define FS_DT_REG 8 /* regular file */
175 #define FS_DT_LNK 10 /* symbolic link */
177 #define FS_DIRENT_NAME_LEN 256
180 * struct fs_dirent - directory entry
182 * A directory entry, returned by fs_readdir(). Returns information
183 * about the file/directory at the current directory entry position.
186 /** @type: one of FS_DT_x (not a mask) */
188 /** @size: file size */
190 /** @flags: attribute flags (FS_ATTR_*) */
192 /** create_time: time of creation */
193 struct rtc_time create_time;
194 /** access_time: time of last access */
195 struct rtc_time access_time;
196 /** change_time: time of last modification */
197 struct rtc_time change_time;
198 /** name: file name */
199 char name[FS_DIRENT_NAME_LEN];
202 /* Note: fs_dir_stream should be treated as opaque to the user of fs layer */
203 struct fs_dir_stream {
204 /* private to fs. layer: */
205 struct blk_desc *desc;
210 * fs_opendir - Open a directory
212 * @filename: the path to directory to open
213 * Return: a pointer to the directory stream or NULL on error and errno
216 struct fs_dir_stream *fs_opendir(const char *filename);
219 * fs_readdir - Read the next directory entry in the directory stream.
221 * Works in an analogous way to posix readdir(). The previously returned
222 * directory entry is no longer valid after calling fs_readdir() again.
223 * After fs_closedir() is called, the returned directory entry is no
226 * @dirs: the directory stream
227 * Return: the next directory entry (only valid until next fs_readdir() or
228 * fs_closedir() call, do not attempt to free()) or NULL if the end of
229 * the directory is reached.
231 struct fs_dirent *fs_readdir(struct fs_dir_stream *dirs);
234 * fs_closedir - close a directory stream
236 * @dirs: the directory stream
238 void fs_closedir(struct fs_dir_stream *dirs);
241 * fs_unlink - delete a file or directory
243 * If a given name is a directory, it will be deleted only if it's empty
245 * @filename: Name of file or directory to delete
246 * Return: 0 on success, -1 on error conditions
248 int fs_unlink(const char *filename);
251 * fs_mkdir - Create a directory
253 * @filename: Name of directory to create
254 * Return: 0 on success, -1 on error conditions
256 int fs_mkdir(const char *filename);
259 * Common implementation for various filesystem commands, optionally limited
260 * to a specific filesystem type via the fstype parameter.
262 int do_size(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[],
264 int do_load(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[],
266 int do_ls(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[],
268 int file_exists(const char *dev_type, const char *dev_part, const char *file,
270 int do_save(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[],
272 int do_rm(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[],
274 int do_mkdir(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[],
276 int do_ln(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[],
280 * Determine the UUID of the specified filesystem and print it. Optionally it is
281 * possible to store the UUID directly in env.
283 int do_fs_uuid(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[],
287 * Determine the type of the specified filesystem and print it. Optionally it is
288 * possible to store the type directly in env.
290 int do_fs_type(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[]);
293 * do_fs_types - List supported filesystems.
295 * @cmdtp: Command information for fstypes
296 * @flag: Command flags (CMD_FLAG_...)
297 * @argc: Number of arguments
298 * @argv: List of arguments
299 * Return: result (see enum command_ret_t)
301 int do_fs_types(struct cmd_tbl *cmdtp, int flag, int argc, char * const argv[]);