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Introduced checksum tag for relocated 64 kB superblock on overwriteable media.

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This commit is contained in:
Thomas Schmitt
2009-08-17 17:22:31 +02:00
parent 07a67a59e7
commit 868005ed0e
6 changed files with 172 additions and 48 deletions
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20
libisofs/util.c
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@ -1567,12 +1567,13 @@ int iso_util_decode_md5_tag(char data[2048], int *tag_type, uint32_t *pos,
uint32_t *range_start, uint32_t *range_size,
uint32_t *next_tag, char md5[16], int flag)
{
static char *tag_magic[4] = {"",
"libisofs_checksum_tag_v1",
"libisofs_sb_checksum_tag_v1",
"libisofs_tree_checksum_tag_v1"};
static int magic_len[4]= {0, 24, 27, 29};
int ret, bin_count, i, mode, magic_first = 1, magic_last = 3, found = 0;
static char *tag_magic[] = {"",
"libisofs_checksum_tag_v1",
"libisofs_sb_checksum_tag_v1",
"libisofs_tree_checksum_tag_v1",
"libisofs_rlsb32_checksum_tag_v1"};
static int magic_len[]= {0, 24, 27, 29, 31};
int ret, bin_count, i, mode, magic_first = 1, magic_last = 4;
char *cpt, self_md5[16], tag_md5[16];
void *ctx = NULL;
@ -1614,6 +1615,13 @@ int iso_util_decode_md5_tag(char data[2048], int *tag_type, uint32_t *pos,
ret = iso_util_dec_to_uint32(cpt + 5, next_tag, 0);
if (ret <= 0)
return 0;
} else if (*tag_type == 4) {
cpt = strstr(cpt, "session_start=");
if (cpt == NULL)
return(0);
ret = iso_util_dec_to_uint32(cpt + 14, next_tag, 0);
if (ret <= 0)
return 0;
}
cpt = strstr(cpt, "md5=");
if (cpt == NULL)