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
24 * do_fat_fsload - Run the fatload command
26 * @cmdtp: Command information for fatload
27 * @flag: Command flags (CMD_FLAG_...)
28 * @argc: Number of arguments
29 * @argv: List of arguments
30 * @return result (see enum command_ret_t)
32 int do_fat_fsload(struct cmd_tbl *cmdtp, int flag, int argc,
36 * do_ext2load - Run the ext2load command
38 * @cmdtp: Command information for ext2load
39 * @flag: Command flags (CMD_FLAG_...)
40 * @argc: Number of arguments
41 * @argv: List of arguments
42 * @return result (see enum command_ret_t)
44 int do_ext2load(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[]);
47 * Tell the fs layer which block device an partition to use for future
48 * commands. This also internally identifies the filesystem that is present
49 * within the partition. The identification process may be limited to a
50 * specific filesystem type by passing FS_* in the fstype parameter.
52 * Returns 0 on success.
53 * Returns non-zero if there is an error accessing the disk or partition, or
54 * no known filesystem type could be recognized on it.
56 int fs_set_blk_dev(const char *ifname, const char *dev_part_str, int fstype);
59 * fs_set_blk_dev_with_part - Set current block device + partition
61 * Similar to fs_set_blk_dev(), but useful for cases where you already
62 * know the blk_desc and part number.
64 * Returns 0 on success.
65 * Returns non-zero if invalid partition or error accessing the disk.
67 int fs_set_blk_dev_with_part(struct blk_desc *desc, int part);
70 * fs_close() - Unset current block device and partition
72 * fs_close() closes the connection to a file system opened with either
73 * fs_set_blk_dev() or fs_set_dev_with_part().
75 * Many file functions implicitly call fs_close(), e.g. fs_closedir(),
76 * fs_exist(), fs_ln(), fs_ls(), fs_mkdir(), fs_read(), fs_size(), fs_write(),
82 * fs_get_type() - Get type of current filesystem
84 * Return: filesystem type
86 * Returns filesystem type representing the current filesystem, or
87 * FS_TYPE_ANY for any unrecognised filesystem.
89 int fs_get_type(void);
92 * fs_get_type_name() - Get type of current filesystem
94 * Return: Pointer to filesystem name
96 * Returns a string describing the current filesystem, or the sentinel
97 * "unsupported" for any unrecognised filesystem.
99 const char *fs_get_type_name(void);
102 * Print the list of files on the partition previously set by fs_set_blk_dev(),
103 * in directory "dirname".
105 * Returns 0 on success. Returns non-zero on error.
107 int fs_ls(const char *dirname);
110 * Determine whether a file exists
112 * Returns 1 if the file exists, 0 if it doesn't exist.
114 int fs_exists(const char *filename);
117 * fs_size - Determine a file's size
119 * @filename: Name of the file
120 * @size: Size of file
121 * @return 0 if ok with valid *size, negative on error
123 int fs_size(const char *filename, loff_t *size);
126 * fs_read() - read file from the partition previously set by fs_set_blk_dev()
128 * Note that not all filesystem drivers support either or both of offset != 0
131 * @filename: full path of the file to read from
132 * @addr: address of the buffer to write to
133 * @offset: offset in the file from where to start reading
134 * @len: the number of bytes to read. Use 0 to read entire file.
135 * @actread: returns the actual number of bytes read
136 * Return: 0 if OK with valid *actread, -1 on error conditions
138 int fs_read(const char *filename, ulong addr, loff_t offset, loff_t len,
142 * fs_write() - write file to the partition previously set by fs_set_blk_dev()
144 * Note that not all filesystem drivers support offset != 0.
146 * @filename: full path of the file to write to
147 * @addr: address of the buffer to read from
148 * @offset: offset in the file from where to start writing
149 * @len: the number of bytes to write
150 * @actwrite: returns the actual number of bytes written
151 * Return: 0 if OK with valid *actwrite, -1 on error conditions
153 int fs_write(const char *filename, ulong addr, loff_t offset, loff_t len,
157 * Directory entry types, matches the subset of DT_x in posix readdir()
158 * which apply to u-boot.
160 #define FS_DT_DIR 4 /* directory */
161 #define FS_DT_REG 8 /* regular file */
162 #define FS_DT_LNK 10 /* symbolic link */
165 * struct fs_dirent - directory entry
167 * A directory entry, returned by fs_readdir(). Returns information
168 * about the file/directory at the current directory entry position.
171 /** @type: one of FS_DT_x (not a mask) */
173 /** @size: file size */
175 /** @flags: attribute flags (FS_ATTR_*) */
177 /** create_time: time of creation */
178 struct rtc_time create_time;
179 /** access_time: time of last access */
180 struct rtc_time access_time;
181 /** change_time: time of last modification */
182 struct rtc_time change_time;
183 /** name: file name */
187 /* Note: fs_dir_stream should be treated as opaque to the user of fs layer */
188 struct fs_dir_stream {
189 /* private to fs. layer: */
190 struct blk_desc *desc;
195 * fs_opendir - Open a directory
197 * @filename: the path to directory to open
198 * @return a pointer to the directory stream or NULL on error and errno
201 struct fs_dir_stream *fs_opendir(const char *filename);
204 * fs_readdir - Read the next directory entry in the directory stream.
206 * Works in an analogous way to posix readdir(). The previously returned
207 * directory entry is no longer valid after calling fs_readdir() again.
208 * After fs_closedir() is called, the returned directory entry is no
211 * @dirs: the directory stream
212 * @return the next directory entry (only valid until next fs_readdir() or
213 * fs_closedir() call, do not attempt to free()) or NULL if the end of
214 * the directory is reached.
216 struct fs_dirent *fs_readdir(struct fs_dir_stream *dirs);
219 * fs_closedir - close a directory stream
221 * @dirs: the directory stream
223 void fs_closedir(struct fs_dir_stream *dirs);
226 * fs_unlink - delete a file or directory
228 * If a given name is a directory, it will be deleted only if it's empty
230 * @filename: Name of file or directory to delete
231 * @return 0 on success, -1 on error conditions
233 int fs_unlink(const char *filename);
236 * fs_mkdir - Create a directory
238 * @filename: Name of directory to create
239 * @return 0 on success, -1 on error conditions
241 int fs_mkdir(const char *filename);
244 * Common implementation for various filesystem commands, optionally limited
245 * to a specific filesystem type via the fstype parameter.
247 int do_size(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[],
249 int do_load(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[],
251 int do_ls(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[],
253 int file_exists(const char *dev_type, const char *dev_part, const char *file,
255 int do_save(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[],
257 int do_rm(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[],
259 int do_mkdir(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[],
261 int do_ln(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[],
265 * Determine the UUID of the specified filesystem and print it. Optionally it is
266 * possible to store the UUID directly in env.
268 int do_fs_uuid(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[],
272 * Determine the type of the specified filesystem and print it. Optionally it is
273 * possible to store the type directly in env.
275 int do_fs_type(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[]);
278 * do_fs_types - List supported filesystems.
280 * @cmdtp: Command information for fstypes
281 * @flag: Command flags (CMD_FLAG_...)
282 * @argc: Number of arguments
283 * @argv: List of arguments
284 * @return result (see enum command_ret_t)
286 int do_fs_types(struct cmd_tbl *cmdtp, int flag, int argc, char * const argv[]);