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1a1ad8e090
New command to determine the filesystem type of a given partition. Optionally stores the filesystem type in a environment variable. Signed-off-by: Sjoerd Simons <sjoerd.simons@collabora.co.uk> Reviewed-by: Stephen Warren <swarren@nvidia.com>
119 lines
4.0 KiB
C
119 lines
4.0 KiB
C
/*
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* Copyright (c) 2012, NVIDIA CORPORATION. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef _FS_H
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#define _FS_H
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#include <common.h>
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#define FS_TYPE_ANY 0
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#define FS_TYPE_FAT 1
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#define FS_TYPE_EXT 2
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#define FS_TYPE_SANDBOX 3
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/*
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* Tell the fs layer which block device an partition to use for future
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* commands. This also internally identifies the filesystem that is present
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* within the partition. The identification process may be limited to a
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* specific filesystem type by passing FS_* in the fstype parameter.
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*
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* Returns 0 on success.
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* Returns non-zero if there is an error accessing the disk or partition, or
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* no known filesystem type could be recognized on it.
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*/
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int fs_set_blk_dev(const char *ifname, const char *dev_part_str, int fstype);
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/*
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* Print the list of files on the partition previously set by fs_set_blk_dev(),
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* in directory "dirname".
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*
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* Returns 0 on success. Returns non-zero on error.
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*/
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int fs_ls(const char *dirname);
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/*
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* Determine whether a file exists
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*
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* Returns 1 if the file exists, 0 if it doesn't exist.
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*/
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int fs_exists(const char *filename);
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/*
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* fs_size - Determine a file's size
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*
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* @filename: Name of the file
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* @size: Size of file
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* @return 0 if ok with valid *size, negative on error
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*/
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int fs_size(const char *filename, loff_t *size);
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/*
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* fs_read - Read file from the partition previously set by fs_set_blk_dev()
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* Note that not all filesystem types support either/both offset!=0 or len!=0.
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*
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* @filename: Name of file to read from
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* @addr: The address to read into
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* @offset: The offset in file to read from
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* @len: The number of bytes to read. Maybe 0 to read entire file
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* @actread: Returns the actual number of bytes read
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* @return 0 if ok with valid *actread, -1 on error conditions
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*/
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int fs_read(const char *filename, ulong addr, loff_t offset, loff_t len,
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loff_t *actread);
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/*
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* fs_write - Write file to the partition previously set by fs_set_blk_dev()
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* Note that not all filesystem types support offset!=0.
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*
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* @filename: Name of file to read from
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* @addr: The address to read into
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* @offset: The offset in file to read from. Maybe 0 to write to start of file
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* @len: The number of bytes to write
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* @actwrite: Returns the actual number of bytes written
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* @return 0 if ok with valid *actwrite, -1 on error conditions
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*/
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int fs_write(const char *filename, ulong addr, loff_t offset, loff_t len,
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loff_t *actwrite);
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/*
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* Common implementation for various filesystem commands, optionally limited
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* to a specific filesystem type via the fstype parameter.
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*/
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int do_size(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
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int fstype);
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int do_load(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
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int fstype);
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int do_ls(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
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int fstype);
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int file_exists(const char *dev_type, const char *dev_part, const char *file,
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int fstype);
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int do_save(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
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int fstype);
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/*
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* Determine the UUID of the specified filesystem and print it. Optionally it is
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* possible to store the UUID directly in env.
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*/
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int do_fs_uuid(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
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int fstype);
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/*
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* Determine the type of the specified filesystem and print it. Optionally it is
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* possible to store the type directly in env.
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*/
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int do_fs_type(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]);
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#endif /* _FS_H */
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