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-rw-r--r--fs/partitions/msdos.c31
1 files changed, 31 insertions, 0 deletions
diff --git a/fs/partitions/msdos.c b/fs/partitions/msdos.c
index 8f12587c3129..4f8df71e49d3 100644
--- a/fs/partitions/msdos.c
+++ b/fs/partitions/msdos.c
@@ -58,6 +58,31 @@ msdos_magic_present(unsigned char *p)
return (p[0] == MSDOS_LABEL_MAGIC1 && p[1] == MSDOS_LABEL_MAGIC2);
}
+/* Value is EBCDIC 'IBMA' */
+#define AIX_LABEL_MAGIC1 0xC9
+#define AIX_LABEL_MAGIC2 0xC2
+#define AIX_LABEL_MAGIC3 0xD4
+#define AIX_LABEL_MAGIC4 0xC1
+static int aix_magic_present(unsigned char *p, struct block_device *bdev)
+{
+ Sector sect;
+ unsigned char *d;
+ int 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;
+ d = read_dev_sector(bdev, 7, &sect);
+ if (d) {
+ if (d[0] == '_' && d[1] == 'L' && d[2] == 'V' && d[3] == 'M')
+ ret = 1;
+ put_dev_sector(sect);
+ };
+ return ret;
+}
+
/*
* Create devices for each logical partition in an extended partition.
* The logical partitions form a linked list, with each entry being
@@ -393,6 +418,12 @@ int msdos_partition(struct parsed_partitions *state, struct block_device *bdev)
return 0;
}
+ if (aix_magic_present(data, bdev)) {
+ put_dev_sector(sect);
+ printk( " [AIX]");
+ return 0;
+ }
+
/*
* Now that the 55aa signature is present, this is probably
* either the boot sector of a FAT filesystem or a DOS-type