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b86a651b64
Add U-Boot adjustments to the libexfat code and integrate
the result into U-Boot filesystem layer. This provides full
read-write exfat support for U-Boot available via generic
filesystem interface.
FS_DIRENT_NAME_LEN is increased to 1024 in case exfat is
enabled, because EXFAT can use UTF16 names, which do not
fit into current FS_DIRENT_NAME_LEN. To avoid affecting
every configuration, increase FS_DIRENT_NAME_LEN only in
case EXFAT is enabled.
Example usage via sandbox, assuming disk.img with one exfat partition:
Drive info:
$ ./u-boot -Tc 'host bind 0 ../disk.img ; host info 0'
dev blocks blksz label path
0 262144 512 0 ../disk.img
List files:
$ ./u-boot -Tc 'host bind 0 ../disk.img ; ls host 0:1 /api'
475 Kconfig
230 Makefile
1873 README
...
10 file(s), 0 dir(s)
Load and checksum a file:
$ ./u-boot -Tc 'host bind 0 ../disk.img ; load host 0:1 $loadaddr .config ; \
crc32 $loadaddr $filesize'
56724 bytes read in 1 ms (54.1 MiB/s)
crc32 for 00000000 ... 0000dd93 ==> b2e847c9
$ crc32 .config
b2e847c9
Load .config file to RAM, store the file into FS as /newconfig,
load the /newconfig into RAM and checksum the file:
$ ./u-boot -Tc 'host bind 0 ../disk.img ; load host 0:1 $loadaddr .config ; \
save host 0:1 $loadaddr /newconfig $filesize ; \
load host 0:1 0x10000 /newconfig ; \
crc32 0x10000 $filesize'
56724 bytes read in 1 ms (54.1 MiB/s)
56724 bytes written in 0 ms
56724 bytes read in 0 ms
crc32 for 00010000 ... 0001dd93 ==> b2e847c9
Remove file 3.txt and create new directory /newdir:
$ ./u-boot -Tc 'host bind 0 ../disk.img ; ls host 0:1 / ; \
rm host 0:1 3.txt ; mkdir host 0:1 /newdir ; \
ls host 0:1 /'
...
0 1.txt
0 2.txt
0 3.txt
0 4.txt
0 5.txt
7 file(s), 4 dir(s)
...
0 1.txt
0 2.txt
newdir/
0 4.txt
0 5.txt
6 file(s), 5 dir(s)
Acked-by: Tom Rini <trini@konsulko.com>
Signed-off-by: Marek Vasut <marex@denx.de>
24 lines
869 B
C
24 lines
869 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _EXFAT_H_
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#define _EXFAT_H_
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struct disk_partition;
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int exfat_fs_opendir(const char *filename, struct fs_dir_stream **dirsp);
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int exfat_fs_readdir(struct fs_dir_stream *dirs, struct fs_dirent **dentp);
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int exfat_fs_ls(const char *dirname);
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int exfat_fs_probe(struct blk_desc *fs_dev_desc,
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struct disk_partition *fs_partition);
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int exfat_fs_read(const char *filename, void *buf, loff_t offset,
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loff_t len, loff_t *actread);
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int exfat_fs_size(const char *filename, loff_t *size);
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int exfat_fs_exists(const char *filename);
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void exfat_fs_close(void);
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void exfat_fs_closedir(struct fs_dir_stream *dirs);
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int exfat_fs_unlink(const char *filename);
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int exfat_fs_mkdir(const char *dirname);
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int exfat_fs_write(const char *filename, void *buf, loff_t offset,
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loff_t len, loff_t *actwrite);
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#endif /* _EXFAT_H */
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