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/*
repair.c (09.03.17)
exFAT file system implementation library.
Free exFAT implementation.
Copyright (C) 2010-2023 Andrew Nayenko
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#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)
{
case EXFAT_REPAIR_NO:
return false;
case EXFAT_REPAIR_YES:
printf("%s %s", question, "Y\n");
return true;
case EXFAT_REPAIR_ASK:
#ifndef __UBOOT__
do
{
printf("%s ", question);
fflush(stdout);
if (fgets(answer, sizeof(answer), stdin))
{
yeah = strcasecmp(answer, "Y\n") == 0;
nope = strcasecmp(answer, "N\n") == 0;
}
else
{
yeah = false;
nope = true;
}
}
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,
uint32_t vbr_checksum)
{
size_t i;
off_t sector_size = SECTOR_SIZE(*ef->sb);
for (i = 0; i < sector_size / sizeof(vbr_checksum); i++)
((le32_t*) sector)[i] = cpu_to_le32(vbr_checksum);
if (exfat_pwrite(ef->dev, sector, sector_size, 11 * sector_size) < 0)
{
exfat_error("failed to write correct VBR checksum");
return false;
}
exfat_errors_fixed++;
return true;
}
bool exfat_fix_invalid_node_checksum(UNUSED const struct exfat* ef,
struct exfat_node* node)
{
/* checksum will be rewritten by exfat_flush_node() */
node->is_dirty = true;
exfat_errors_fixed++;
return true;
}
bool exfat_fix_unknown_entry(struct exfat* ef, struct exfat_node* dir,
const struct exfat_entry* entry, off_t offset)
{
struct exfat_entry deleted = *entry;
deleted.type &= ~EXFAT_ENTRY_VALID;
if (exfat_generic_pwrite(ef, dir, &deleted, sizeof(struct exfat_entry),
offset) != sizeof(struct exfat_entry))
return false;
exfat_errors_fixed++;
return true;
}
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