/* * Copyright (c) 2012, NVIDIA CORPORATION. All rights reserved. * * SPDX-License-Identifier: GPL-2.0 */ #ifndef _FS_H #define _FS_H #include <common.h> #define FS_TYPE_ANY 0 #define FS_TYPE_FAT 1 #define FS_TYPE_EXT 2 #define FS_TYPE_SANDBOX 3 #define FS_TYPE_UBIFS 4 /* * Tell the fs layer which block device an partition to use for future * commands. This also internally identifies the filesystem that is present * within the partition. The identification process may be limited to a * specific filesystem type by passing FS_* in the fstype parameter. * * Returns 0 on success. * Returns non-zero if there is an error accessing the disk or partition, or * no known filesystem type could be recognized on it. */ int fs_set_blk_dev(const char *ifname, const char *dev_part_str, int fstype); /* * Print the list of files on the partition previously set by fs_set_blk_dev(), * in directory "dirname". * * Returns 0 on success. Returns non-zero on error. */ int fs_ls(const char *dirname); /* * Determine whether a file exists * * Returns 1 if the file exists, 0 if it doesn't exist. */ int fs_exists(const char *filename); /* * fs_size - Determine a file's size * * @filename: Name of the file * @size: Size of file * @return 0 if ok with valid *size, negative on error */ int fs_size(const char *filename, loff_t *size); /* * fs_read - Read file from the partition previously set by fs_set_blk_dev() * Note that not all filesystem types support either/both offset!=0 or len!=0. * * @filename: Name of file to read from * @addr: The address to read into * @offset: The offset in file to read from * @len: The number of bytes to read. Maybe 0 to read entire file * @actread: Returns the actual number of bytes read * @return 0 if ok with valid *actread, -1 on error conditions */ int fs_read(const char *filename, ulong addr, loff_t offset, loff_t len, loff_t *actread); /* * fs_write - Write file to the partition previously set by fs_set_blk_dev() * Note that not all filesystem types support offset!=0. * * @filename: Name of file to read from * @addr: The address to read into * @offset: The offset in file to read from. Maybe 0 to write to start of file * @len: The number of bytes to write * @actwrite: Returns the actual number of bytes written * @return 0 if ok with valid *actwrite, -1 on error conditions */ int fs_write(const char *filename, ulong addr, loff_t offset, loff_t len, loff_t *actwrite); /* * Common implementation for various filesystem commands, optionally limited * to a specific filesystem type via the fstype parameter. */ int do_size(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[], int fstype); int do_load(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[], int fstype); int do_ls(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[], int fstype); int file_exists(const char *dev_type, const char *dev_part, const char *file, int fstype); int do_save(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[], int fstype); /* * Determine the UUID of the specified filesystem and print it. Optionally it is * possible to store the UUID directly in env. */ int do_fs_uuid(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[], int fstype); /* * Determine the type of the specified filesystem and print it. Optionally it is * possible to store the type directly in env. */ int do_fs_type(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]); #endif /* _FS_H */