diff options
| -rw-r--r-- | fs/partitions/msdos.c | 12 | ||||
| -rw-r--r-- | include/linux/genhd.h | 2 |
2 files changed, 13 insertions, 1 deletions
diff --git a/fs/partitions/msdos.c b/fs/partitions/msdos.c index 8c7af177781..dafd3b6b2dc 100644 --- a/fs/partitions/msdos.c +++ b/fs/partitions/msdos.c @@ -63,15 +63,25 @@ msdos_magic_present(unsigned char *p) #define AIX_LABEL_MAGIC4 0xC1 static int aix_magic_present(unsigned char *p, struct block_device *bdev) { + struct partition *pt = (struct partition *) (p + 0x1be); Sector sect; unsigned char *d; - int ret = 0; + int slot, ret = 0; if (p[0] != AIX_LABEL_MAGIC1 && p[1] != AIX_LABEL_MAGIC2 && p[2] != AIX_LABEL_MAGIC3 && p[3] != AIX_LABEL_MAGIC4) return 0; + /* Assume the partition table is valid if Linux partitions exists */ + for (slot = 1; slot <= 4; slot++, pt++) { + if (pt->sys_ind == LINUX_SWAP_PARTITION || + pt->sys_ind == LINUX_RAID_PARTITION || + pt->sys_ind == LINUX_DATA_PARTITION || + pt->sys_ind == LINUX_LVM_PARTITION || + is_extended_partition(pt)) + return 0; + } d = read_dev_sector(bdev, 7, §); if (d) { if (d[0] == '_' && d[1] == 'L' && d[2] == 'V' && d[3] == 'M') diff --git a/include/linux/genhd.h b/include/linux/genhd.h index 0a022b2f63f..7a566fad3f7 100644 --- a/include/linux/genhd.h +++ b/include/linux/genhd.h @@ -21,6 +21,8 @@ enum { WIN98_EXTENDED_PARTITION = 0x0f, LINUX_SWAP_PARTITION = 0x82, + LINUX_DATA_PARTITION = 0x83, + LINUX_LVM_PARTITION = 0x8e, LINUX_RAID_PARTITION = 0xfd, /* autodetect RAID partition */ SOLARIS_X86_PARTITION = LINUX_SWAP_PARTITION, |