2 * Copyright (c) 2012, NVIDIA CORPORATION. All rights reserved.
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms and conditions of the GNU General Public License,
6 * version 2, as published by the Free Software Foundation.
8 * This program is distributed in the hope it will be useful, but WITHOUT
9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
13 * You should have received a copy of the GNU General Public License
14 * along with this program. If not, see <http://www.gnu.org/licenses/>.
24 #define FS_TYPE_SANDBOX 3
27 * Tell the fs layer which block device an partition to use for future
28 * commands. This also internally identifies the filesystem that is present
29 * within the partition. The identification process may be limited to a
30 * specific filesystem type by passing FS_* in the fstype parameter.
32 * Returns 0 on success.
33 * Returns non-zero if there is an error accessing the disk or partition, or
34 * no known filesystem type could be recognized on it.
36 int fs_set_blk_dev(const char *ifname, const char *dev_part_str, int fstype);
39 * Print the list of files on the partition previously set by fs_set_blk_dev(),
40 * in directory "dirname".
42 * Returns 0 on success. Returns non-zero on error.
44 int fs_ls(const char *dirname);
47 * Determine whether a file exists
49 * Returns 1 if the file exists, 0 if it doesn't exist.
51 int fs_exists(const char *filename);
54 * fs_size - Determine a file's size
56 * @filename: Name of the file
58 * @return 0 if ok with valid *size, negative on error
60 int fs_size(const char *filename, loff_t *size);
63 * fs_read - Read file from the partition previously set by fs_set_blk_dev()
64 * Note that not all filesystem types support either/both offset!=0 or len!=0.
66 * @filename: Name of file to read from
67 * @addr: The address to read into
68 * @offset: The offset in file to read from
69 * @len: The number of bytes to read. Maybe 0 to read entire file
70 * @actread: Returns the actual number of bytes read
71 * @return 0 if ok with valid *actread, -1 on error conditions
73 int fs_read(const char *filename, ulong addr, loff_t offset, loff_t len,
77 * fs_write - Write file to the partition previously set by fs_set_blk_dev()
78 * Note that not all filesystem types support offset!=0.
80 * @filename: Name of file to read from
81 * @addr: The address to read into
82 * @offset: The offset in file to read from. Maybe 0 to write to start of file
83 * @len: The number of bytes to write
84 * @actwrite: Returns the actual number of bytes written
85 * @return 0 if ok with valid *actwrite, -1 on error conditions
87 int fs_write(const char *filename, ulong addr, loff_t offset, loff_t len,
91 * Common implementation for various filesystem commands, optionally limited
92 * to a specific filesystem type via the fstype parameter.
94 int do_size(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
96 int do_load(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
98 int do_ls(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
100 int file_exists(const char *dev_type, const char *dev_part, const char *file,
102 int do_save(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
106 * Determine the UUID of the specified filesystem and print it. Optionally it is
107 * possible to store the UUID directly in env.
109 int do_fs_uuid(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
113 * Determine the type of the specified filesystem and print it. Optionally it is
114 * possible to store the type directly in env.
116 int do_fs_type(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]);