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
22 * do_fat_fsload - Run the fatload command
24 * @cmdtp: Command information for fatload
25 * @flag: Command flags (CMD_FLAG_...)
26 * @argc: Number of arguments
27 * @argv: List of arguments
28 * @return result (see enum command_ret_t)
30 int do_fat_fsload(struct cmd_tbl *cmdtp, int flag, int argc,
34 * do_ext2load - Run the ext2load command
36 * @cmdtp: Command information for ext2load
37 * @flag: Command flags (CMD_FLAG_...)
38 * @argc: Number of arguments
39 * @argv: List of arguments
40 * @return result (see enum command_ret_t)
42 int do_ext2load(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[]);
45 * Tell the fs layer which block device an partition to use for future
46 * commands. This also internally identifies the filesystem that is present
47 * within the partition. The identification process may be limited to a
48 * specific filesystem type by passing FS_* in the fstype parameter.
50 * Returns 0 on success.
51 * Returns non-zero if there is an error accessing the disk or partition, or
52 * no known filesystem type could be recognized on it.
54 int fs_set_blk_dev(const char *ifname, const char *dev_part_str, int fstype);
57 * fs_set_blk_dev_with_part - Set current block device + partition
59 * Similar to fs_set_blk_dev(), but useful for cases where you already
60 * know the blk_desc and part number.
62 * Returns 0 on success.
63 * Returns non-zero if invalid partition or error accessing the disk.
65 int fs_set_blk_dev_with_part(struct blk_desc *desc, int part);
68 * fs_close() - Unset current block device and partition
70 * fs_close() closes the connection to a file system opened with either
71 * fs_set_blk_dev() or fs_set_dev_with_part().
73 * Many file functions implicitly call fs_close(), e.g. fs_closedir(),
74 * fs_exist(), fs_ln(), fs_ls(), fs_mkdir(), fs_read(), fs_size(), fs_write(),
80 * fs_get_type() - Get type of current filesystem
82 * Return: filesystem type
84 * Returns filesystem type representing the current filesystem, or
85 * FS_TYPE_ANY for any unrecognised filesystem.
87 int fs_get_type(void);
90 * fs_get_type_name() - Get type of current filesystem
92 * Return: Pointer to filesystem name
94 * Returns a string describing the current filesystem, or the sentinel
95 * "unsupported" for any unrecognised filesystem.
97 const char *fs_get_type_name(void);
100 * Print the list of files on the partition previously set by fs_set_blk_dev(),
101 * in directory "dirname".
103 * Returns 0 on success. Returns non-zero on error.
105 int fs_ls(const char *dirname);
108 * Determine whether a file exists
110 * Returns 1 if the file exists, 0 if it doesn't exist.
112 int fs_exists(const char *filename);
115 * fs_size - Determine a file's size
117 * @filename: Name of the file
118 * @size: Size of file
119 * @return 0 if ok with valid *size, negative on error
121 int fs_size(const char *filename, loff_t *size);
124 * fs_read() - read file from the partition previously set by fs_set_blk_dev()
126 * Note that not all filesystem drivers support either or both of offset != 0
129 * @filename: full path of the file to read from
130 * @addr: address of the buffer to write to
131 * @offset: offset in the file from where to start reading
132 * @len: the number of bytes to read. Use 0 to read entire file.
133 * @actread: returns the actual number of bytes read
134 * Return: 0 if OK with valid *actread, -1 on error conditions
136 int fs_read(const char *filename, ulong addr, loff_t offset, loff_t len,
140 * fs_write() - write file to the partition previously set by fs_set_blk_dev()
142 * Note that not all filesystem drivers support offset != 0.
144 * @filename: full path of the file to write to
145 * @addr: address of the buffer to read from
146 * @offset: offset in the file from where to start writing
147 * @len: the number of bytes to write
148 * @actwrite: returns the actual number of bytes written
149 * Return: 0 if OK with valid *actwrite, -1 on error conditions
151 int fs_write(const char *filename, ulong addr, loff_t offset, loff_t len,
155 * Directory entry types, matches the subset of DT_x in posix readdir()
156 * which apply to u-boot.
158 #define FS_DT_DIR 4 /* directory */
159 #define FS_DT_REG 8 /* regular file */
160 #define FS_DT_LNK 10 /* symbolic link */
163 * A directory entry, returned by fs_readdir(). Returns information
164 * about the file/directory at the current directory entry position.
167 unsigned type; /* one of FS_DT_x (not a mask) */
168 loff_t size; /* size in bytes */
172 /* Note: fs_dir_stream should be treated as opaque to the user of fs layer */
173 struct fs_dir_stream {
174 /* private to fs. layer: */
175 struct blk_desc *desc;
180 * fs_opendir - Open a directory
182 * @filename: the path to directory to open
183 * @return a pointer to the directory stream or NULL on error and errno
186 struct fs_dir_stream *fs_opendir(const char *filename);
189 * fs_readdir - Read the next directory entry in the directory stream.
191 * Works in an analogous way to posix readdir(). The previously returned
192 * directory entry is no longer valid after calling fs_readdir() again.
193 * After fs_closedir() is called, the returned directory entry is no
196 * @dirs: the directory stream
197 * @return the next directory entry (only valid until next fs_readdir() or
198 * fs_closedir() call, do not attempt to free()) or NULL if the end of
199 * the directory is reached.
201 struct fs_dirent *fs_readdir(struct fs_dir_stream *dirs);
204 * fs_closedir - close a directory stream
206 * @dirs: the directory stream
208 void fs_closedir(struct fs_dir_stream *dirs);
211 * fs_unlink - delete a file or directory
213 * If a given name is a directory, it will be deleted only if it's empty
215 * @filename: Name of file or directory to delete
216 * @return 0 on success, -1 on error conditions
218 int fs_unlink(const char *filename);
221 * fs_mkdir - Create a directory
223 * @filename: Name of directory to create
224 * @return 0 on success, -1 on error conditions
226 int fs_mkdir(const char *filename);
229 * Common implementation for various filesystem commands, optionally limited
230 * to a specific filesystem type via the fstype parameter.
232 int do_size(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[],
234 int do_load(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[],
236 int do_ls(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[],
238 int file_exists(const char *dev_type, const char *dev_part, const char *file,
240 int do_save(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[],
242 int do_rm(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[],
244 int do_mkdir(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[],
246 int do_ln(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[],
250 * Determine the UUID of the specified filesystem and print it. Optionally it is
251 * possible to store the UUID directly in env.
253 int do_fs_uuid(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[],
257 * Determine the type of the specified filesystem and print it. Optionally it is
258 * possible to store the type directly in env.
260 int do_fs_type(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[]);