2 * Copyright (c) 2012, NVIDIA CORPORATION. All rights reserved.
4 * SPDX-License-Identifier: GPL-2.0
14 #define FS_TYPE_SANDBOX 3
15 #define FS_TYPE_UBIFS 4
18 * Tell the fs layer which block device an partition to use for future
19 * commands. This also internally identifies the filesystem that is present
20 * within the partition. The identification process may be limited to a
21 * specific filesystem type by passing FS_* in the fstype parameter.
23 * Returns 0 on success.
24 * Returns non-zero if there is an error accessing the disk or partition, or
25 * no known filesystem type could be recognized on it.
27 int fs_set_blk_dev(const char *ifname, const char *dev_part_str, int fstype);
30 * Print the list of files on the partition previously set by fs_set_blk_dev(),
31 * in directory "dirname".
33 * Returns 0 on success. Returns non-zero on error.
35 int fs_ls(const char *dirname);
38 * Determine whether a file exists
40 * Returns 1 if the file exists, 0 if it doesn't exist.
42 int fs_exists(const char *filename);
45 * fs_size - Determine a file's size
47 * @filename: Name of the file
49 * @return 0 if ok with valid *size, negative on error
51 int fs_size(const char *filename, loff_t *size);
54 * fs_read - Read file from the partition previously set by fs_set_blk_dev()
55 * Note that not all filesystem types support either/both offset!=0 or len!=0.
57 * @filename: Name of file to read from
58 * @addr: The address to read into
59 * @offset: The offset in file to read from
60 * @len: The number of bytes to read. Maybe 0 to read entire file
61 * @actread: Returns the actual number of bytes read
62 * @return 0 if ok with valid *actread, -1 on error conditions
64 int fs_read(const char *filename, ulong addr, loff_t offset, loff_t len,
68 * fs_write - Write file to the partition previously set by fs_set_blk_dev()
69 * Note that not all filesystem types support offset!=0.
71 * @filename: Name of file to read from
72 * @addr: The address to read into
73 * @offset: The offset in file to read from. Maybe 0 to write to start of file
74 * @len: The number of bytes to write
75 * @actwrite: Returns the actual number of bytes written
76 * @return 0 if ok with valid *actwrite, -1 on error conditions
78 int fs_write(const char *filename, ulong addr, loff_t offset, loff_t len,
82 * Common implementation for various filesystem commands, optionally limited
83 * to a specific filesystem type via the fstype parameter.
85 int do_size(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
87 int do_load(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
89 int do_ls(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
91 int file_exists(const char *dev_type, const char *dev_part, const char *file,
93 int do_save(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
97 * Determine the UUID of the specified filesystem and print it. Optionally it is
98 * possible to store the UUID directly in env.
100 int do_fs_uuid(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
104 * Determine the type of the specified filesystem and print it. Optionally it is
105 * possible to store the type directly in env.
107 int do_fs_type(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]);