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 * Determine a file's size
56 * Returns the file's size in bytes, or a negative value if it doesn't exist.
58 int fs_size(const char *filename);
61 * Read file "filename" from the partition previously set by fs_set_blk_dev(),
62 * to address "addr", starting at byte offset "offset", and reading "len"
63 * bytes. "offset" may be 0 to read from the start of the file. "len" may be
64 * 0 to read the entire file. Note that not all filesystem types support
65 * either/both offset!=0 or len!=0.
67 * Returns number of bytes read on success. Returns <= 0 on error.
69 int fs_read(const char *filename, ulong addr, int offset, int len);
72 * Write file "filename" to the partition previously set by fs_set_blk_dev(),
73 * from address "addr", starting at byte offset "offset", and writing "len"
74 * bytes. "offset" may be 0 to write to the start of the file. Note that not
75 * all filesystem types support offset!=0.
77 * Returns number of bytes read on success. Returns <= 0 on error.
79 int fs_write(const char *filename, ulong addr, int offset, int 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[],