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mtd: support -c (datasize) option for fixseama command

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Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
This commit is contained in:
Rafał Miłecki 2016-06-11 01:41:10 +02:00
parent cf6d9d97fb
commit 7e08f2ccbd
3 changed files with 9 additions and 7 deletions
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8
package/system/mtd/src/mtd.c
View file

@ -674,7 +674,7 @@ resume:
break;
case MTD_IMAGE_FORMAT_SEAMA:
if (mtd_fixseama)
mtd_fixseama(mtd, 0);
mtd_fixseama(mtd, 0, 0);
break;
default:
break;
@ -737,8 +737,10 @@ static void usage(void)
if (mtd_fixtrx) {
fprintf(stderr,
" -o offset offset of the image header in the partition(for fixtrx)\n");
}
if (mtd_fixtrx || mtd_fixseama) {
fprintf(stderr,
" -c datasize amount of data to be used for checksum calculation (for fixtrx)\n");
" -c datasize amount of data to be used for checksum calculation (for fixtrx / fixseama)\n");
}
fprintf(stderr,
#ifdef FIS_SUPPORT
@ -987,7 +989,7 @@ int main (int argc, char **argv)
break;
case CMD_FIXSEAMA:
if (mtd_fixseama)
mtd_fixseama(device, 0);
mtd_fixseama(device, 0, data_size);
break;
}

2
package/system/mtd/src/mtd.h
View file

@ -26,6 +26,6 @@ extern void mtd_parse_jffs2data(const char *buf, const char *dir);
extern int trx_fixup(int fd, const char *name) __attribute__ ((weak));
extern int trx_check(int imagefd, const char *mtd, char *buf, int *len) __attribute__ ((weak));
extern int mtd_fixtrx(const char *mtd, size_t offset, size_t data_size) __attribute__ ((weak));
extern int mtd_fixseama(const char *mtd, size_t offset) __attribute__ ((weak));
extern int mtd_fixseama(const char *mtd, size_t offset, size_t data_size) __attribute__ ((weak));
extern int mtd_resetbc(const char *mtd) __attribute__ ((weak));
#endif /* __mtd_h */

6
package/system/mtd/src/seama.c
View file

@ -104,14 +104,13 @@ err_out:
}
int
mtd_fixseama(const char *mtd, size_t offset)
mtd_fixseama(const char *mtd, size_t offset, size_t data_size)
{
int fd;
char *first_block;
ssize_t res;
size_t block_offset;
size_t data_offset;
size_t data_size;
struct seama_entity_header *shdr;
if (quiet < 2)
@ -155,7 +154,8 @@ mtd_fixseama(const char *mtd, size_t offset)
}
data_offset = offset + sizeof(struct seama_entity_header) + ntohs(shdr->metasize);
data_size = mtdsize - data_offset;
if (!data_size)
data_size = mtdsize - data_offset;
if (data_size > ntohl(shdr->size))
data_size = ntohl(shdr->size);
if (seama_fix_md5(shdr, fd, data_offset, data_size))