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The sandbox/ext4/fat/generic fs commands do not gracefully deal with files greater than 2GB. Negative values are returned in such cases. To handle this, the fs functions have been modified to take an additional parameter of type "* loff_t" which is then populated. The return value of the fs functions are used only for error conditions. Signed-off-by: Suriyan Ramasami <suriyan.r@gmail.com> Acked-by: Simon Glass <sjg@chromium.org> [trini: Update board/gdsys/p1022/controlcenterd-id.c, drivers/fpga/zynqpl.c for changes] Signed-off-by: Tom Rini <trini@ti.com>
112 lines
3.7 KiB
C
112 lines
3.7 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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#endif /* _FS_H */
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