X-Git-Url: http://git.samba.org/samba.git/?p=sfrench%2Fcifs-2.6.git;a=blobdiff_plain;f=fs%2Fpartitions%2Fmsdos.c;h=4ccec4cd1367a304bac2c784d0ba7e794b3e98cc;hp=d964d1f90decff0855c8f1ddedd96c40512b3668;hb=c827ba4cb49a30ce581201fd0ba2be77cde412c7;hpb=784020fb950741cbb7390c6b622321da626fb1e8

diff --git a/fs/partitions/msdos.c b/fs/partitions/msdos.c
index d964d1f90dec..4ccec4cd1367 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)
+	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, &sect);
 	if (d) {
 		if (d[0] == '_' && d[1] == 'L' && d[2] == 'V' && d[3] == 'M')