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Bug fix: When reading an ISO filesystem, the presence of

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system area options flag bit0 (-protective-msdos-label)
         was not recognized if a partition is appended.
This commit is contained in:
Thomas Schmitt
2015-12-22 12:25:50 +01:00
parent c79299ba08
commit 009ce1be8f
1 changed files with 4 additions and 3 deletions
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7
libisofs/fs_image.c
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@@ -3967,20 +3967,21 @@ int iso_analyze_mbr(IsoImage *image, IsoDataSource *src, int flag)
is_grub2_mbr = 1;
}
if (sai->mbr_req_count == 1 && !is_isohybrid) {
if (sai->mbr_req_count >= 1 && !is_isohybrid) {
part = sai->mbr_req[0];
if (part->start_block == 1 &&
part->block_count + 1 == ((uint64_t) sai->image_size) * 4) {
/* libisofs protective msdos label for GRUB2 */
is_protective_label = 1;
sub_type = 0;
} else if (part->start_block == 0 &&
} else if (sai->mbr_req_count == 1 && part->start_block == 0 &&
part->block_count <= ((uint64_t) sai->image_size) * 4 &&
part->block_count + 600 >= ((uint64_t) sai->image_size) * 4 &&
part->type_byte == 0x96) {
/* CHRP (possibly without padding) */
sub_type = 1;
} else if (sai->mbr_req[0]->start_block > 0 &&
} else if (sai->mbr_req_count == 1 &&
sai->mbr_req[0]->start_block > 0 &&
(sai->mbr_req[0]->start_block % 4) == 0 &&
(sai->mbr_req[0]->start_block +
sai->mbr_req[0]->block_count) / 4 <= sai->image_size &&