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/repair.c b/fs/exfat/repair.c
index 615b8d1..9c91239 100644
--- a/fs/exfat/repair.c
+++ b/fs/exfat/repair.c
@@ -21,15 +21,19 @@
*/
#include "exfat.h"
+#ifndef __UBOOT__
#include <strings.h>
+#endif
int exfat_errors_fixed;
bool exfat_ask_to_fix(const struct exfat* ef)
{
const char* question = "Fix (Y/N)?";
+#ifndef __UBOOT__
char answer[8];
bool yeah, nope;
+#endif
switch (ef->repair)
{
@@ -39,6 +43,7 @@
printf("%s %s", question, "Y\n");
return true;
case EXFAT_REPAIR_ASK:
+#ifndef __UBOOT__
do
{
printf("%s ", question);
@@ -56,8 +61,16 @@
}
while (!yeah && !nope);
return yeah;
+#else
+ default:
+ /* Do not attempt to repair FS in U-Boot. */
+ return false;
+#endif
}
exfat_bug("invalid repair option value: %d", ef->repair);
+#ifdef __UBOOT__
+ return false;
+#endif
}
bool exfat_fix_invalid_vbr_checksum(const struct exfat* ef, void* sector,