1 /* SPDX-License-Identifier: GPL-2.0 */
3 * Copyright (c) 2012, NVIDIA CORPORATION. All rights reserved.
15 #define FS_TYPE_SANDBOX 3
16 #define FS_TYPE_UBIFS 4
17 #define FS_TYPE_BTRFS 5
18 #define FS_TYPE_SQUASHFS 6
23 * do_fat_fsload - Run the fatload command
25 * @cmdtp: Command information for fatload
26 * @flag: Command flags (CMD_FLAG_...)
27 * @argc: Number of arguments
28 * @argv: List of arguments
29 * @return result (see enum command_ret_t)
31 int do_fat_fsload(struct cmd_tbl *cmdtp, int flag, int argc,
35 * do_ext2load - Run the ext2load command
37 * @cmdtp: Command information for ext2load
38 * @flag: Command flags (CMD_FLAG_...)
39 * @argc: Number of arguments
40 * @argv: List of arguments
41 * @return result (see enum command_ret_t)
43 int do_ext2load(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[]);
46 * Tell the fs layer which block device an partition to use for future
47 * commands. This also internally identifies the filesystem that is present
48 * within the partition. The identification process may be limited to a
49 * specific filesystem type by passing FS_* in the fstype parameter.
51 * Returns 0 on success.
52 * Returns non-zero if there is an error accessing the disk or partition, or
53 * no known filesystem type could be recognized on it.
55 int fs_set_blk_dev(const char *ifname, const char *dev_part_str, int fstype);
58 * fs_set_blk_dev_with_part - Set current block device + partition
60 * Similar to fs_set_blk_dev(), but useful for cases where you already
61 * know the blk_desc and part number.
63 * Returns 0 on success.
64 * Returns non-zero if invalid partition or error accessing the disk.
66 int fs_set_blk_dev_with_part(struct blk_desc *desc, int part);
69 * fs_close() - Unset current block device and partition
71 * fs_close() closes the connection to a file system opened with either
72 * fs_set_blk_dev() or fs_set_dev_with_part().
74 * Many file functions implicitly call fs_close(), e.g. fs_closedir(),
75 * fs_exist(), fs_ln(), fs_ls(), fs_mkdir(), fs_read(), fs_size(), fs_write(),
81 * fs_get_type() - Get type of current filesystem
83 * Return: filesystem type
85 * Returns filesystem type representing the current filesystem, or
86 * FS_TYPE_ANY for any unrecognised filesystem.
88 int fs_get_type(void);
91 * fs_get_type_name() - Get type of current filesystem
93 * Return: Pointer to filesystem name
95 * Returns a string describing the current filesystem, or the sentinel
96 * "unsupported" for any unrecognised filesystem.
98 const char *fs_get_type_name(void);
101 * Print the list of files on the partition previously set by fs_set_blk_dev(),
102 * in directory "dirname".
104 * Returns 0 on success. Returns non-zero on error.
106 int fs_ls(const char *dirname);
109 * Determine whether a file exists
111 * Returns 1 if the file exists, 0 if it doesn't exist.
113 int fs_exists(const char *filename);
116 * fs_size - Determine a file's size
118 * @filename: Name of the file
119 * @size: Size of file
120 * @return 0 if ok with valid *size, negative on error
122 int fs_size(const char *filename, loff_t *size);
125 * fs_read() - read file from the partition previously set by fs_set_blk_dev()
127 * Note that not all filesystem drivers support either or both of offset != 0
130 * @filename: full path of the file to read from
131 * @addr: address of the buffer to write to
132 * @offset: offset in the file from where to start reading
133 * @len: the number of bytes to read. Use 0 to read entire file.
134 * @actread: returns the actual number of bytes read
135 * Return: 0 if OK with valid *actread, -1 on error conditions
137 int fs_read(const char *filename, ulong addr, loff_t offset, loff_t len,
141 * fs_write() - write file to the partition previously set by fs_set_blk_dev()
143 * Note that not all filesystem drivers support offset != 0.
145 * @filename: full path of the file to write to
146 * @addr: address of the buffer to read from
147 * @offset: offset in the file from where to start writing
148 * @len: the number of bytes to write
149 * @actwrite: returns the actual number of bytes written
150 * Return: 0 if OK with valid *actwrite, -1 on error conditions
152 int fs_write(const char *filename, ulong addr, loff_t offset, loff_t len,
156 * Directory entry types, matches the subset of DT_x in posix readdir()
157 * which apply to u-boot.
159 #define FS_DT_DIR 4 /* directory */
160 #define FS_DT_REG 8 /* regular file */
161 #define FS_DT_LNK 10 /* symbolic link */
164 * A directory entry, returned by fs_readdir(). Returns information
165 * about the file/directory at the current directory entry position.
168 unsigned type; /* one of FS_DT_x (not a mask) */
169 loff_t size; /* size in bytes */
173 /* Note: fs_dir_stream should be treated as opaque to the user of fs layer */
174 struct fs_dir_stream {
175 /* private to fs. layer: */
176 struct blk_desc *desc;
181 * fs_opendir - Open a directory
183 * @filename: the path to directory to open
184 * @return a pointer to the directory stream or NULL on error and errno
187 struct fs_dir_stream *fs_opendir(const char *filename);
190 * fs_readdir - Read the next directory entry in the directory stream.
192 * Works in an analogous way to posix readdir(). The previously returned
193 * directory entry is no longer valid after calling fs_readdir() again.
194 * After fs_closedir() is called, the returned directory entry is no
197 * @dirs: the directory stream
198 * @return the next directory entry (only valid until next fs_readdir() or
199 * fs_closedir() call, do not attempt to free()) or NULL if the end of
200 * the directory is reached.
202 struct fs_dirent *fs_readdir(struct fs_dir_stream *dirs);
205 * fs_closedir - close a directory stream
207 * @dirs: the directory stream
209 void fs_closedir(struct fs_dir_stream *dirs);
212 * fs_unlink - delete a file or directory
214 * If a given name is a directory, it will be deleted only if it's empty
216 * @filename: Name of file or directory to delete
217 * @return 0 on success, -1 on error conditions
219 int fs_unlink(const char *filename);
222 * fs_mkdir - Create a directory
224 * @filename: Name of directory to create
225 * @return 0 on success, -1 on error conditions
227 int fs_mkdir(const char *filename);
230 * Common implementation for various filesystem commands, optionally limited
231 * to a specific filesystem type via the fstype parameter.
233 int do_size(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[],
235 int do_load(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[],
237 int do_ls(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[],
239 int file_exists(const char *dev_type, const char *dev_part, const char *file,
241 int do_save(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[],
243 int do_rm(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[],
245 int do_mkdir(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[],
247 int do_ln(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[],
251 * Determine the UUID of the specified filesystem and print it. Optionally it is
252 * possible to store the UUID directly in env.
254 int do_fs_uuid(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[],
258 * Determine the type of the specified filesystem and print it. Optionally it is
259 * possible to store the type directly in env.
261 int do_fs_type(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[]);
264 * do_fs_types - List supported filesystems.
266 * @cmdtp: Command information for fstypes
267 * @flag: Command flags (CMD_FLAG_...)
268 * @argc: Number of arguments
269 * @argv: List of arguments
270 * @return result (see enum command_ret_t)
272 int do_fs_types(struct cmd_tbl *cmdtp, int flag, int argc, char * const argv[]);