fs: exfat: Add U-Boot porting layer
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>
diff --git a/fs/exfat/exfat.h b/fs/exfat/exfat.h
index 0e146e8..cce3e30 100644
--- a/fs/exfat/exfat.h
+++ b/fs/exfat/exfat.h
@@ -34,8 +34,10 @@
#include <stdlib.h>
#include <time.h>
#include <stdbool.h>
+#ifndef __UBOOT__
#include <sys/stat.h>
#include <sys/types.h>
+#endif
#define EXFAT_NAME_MAX 255
/* UTF-16 encodes code points up to U+FFFF as single 16-bit code units.
@@ -51,7 +53,9 @@
#define MIN(a, b) ((a) < (b) ? (a) : (b))
#define MAX(a, b) ((a) > (b) ? (a) : (b))
+#ifndef __UBOOT__
#define DIV_ROUND_UP(x, d) (((x) + (d) - 1) / (d))
+#endif
#define ROUND_UP(x, d) (DIV_ROUND_UP(x, d) * (d))
#define BMAP_SIZE(count) (ROUND_UP(count, sizeof(bitmap_t) * 8) / 8)
@@ -145,10 +149,17 @@
extern int exfat_errors;
extern int exfat_errors_fixed;
+#ifdef __UBOOT__
+#define exfat_bug(fmt, args...) log_crit(fmt, ##args)
+#define exfat_error(fmt, args...) log_err(fmt, ##args)
+#define exfat_warn(fmt, args...) log_warning(fmt, ##args)
+#define exfat_debug(fmt, args...) log_debug(fmt, ##args)
+#else
void exfat_bug(const char* format, ...) PRINTF NORETURN;
void exfat_error(const char* format, ...) PRINTF;
void exfat_warn(const char* format, ...) PRINTF;
void exfat_debug(const char* format, ...) PRINTF;
+#endif
struct exfat_dev* exfat_open(const char* spec, enum exfat_mode mode);
int exfat_close(struct exfat_dev* dev);