util-linux/util-linux-ng-2.16-squashfs3-detect.patch

---
 shlibs/blkid/src/superblocks/superblocks.c  |    1 
 shlibs/blkid/src/superblocks/superblocks.h  |    1 
 shlibs/blkid/src/superblocks/squashfs.c     |   63 +++++++++++++++++++++++++++---------
 3 files changed, 50 insertions(+), 15 deletions(-)

Index: util-linux-2.19/shlibs/blkid/src/superblocks/superblocks.c
===================================================================
--- util-linux-2.19.orig/libblkid/src/superblocks/superblocks.c
+++ util-linux-2.19/libblkid/src/superblocks/superblocks.c
@@ -131,6 +131,7 @@ static const struct blkid_idinfo *idinfo
 	&oracleasm_idinfo,
 	&vxfs_idinfo,
 	&squashfs_idinfo,
+	&squashfs3_idinfo,
 	&netware_idinfo,
 	&btrfs_idinfo,
 	&ubifs_idinfo,
Index: util-linux-2.19/shlibs/blkid/src/superblocks/superblocks.h
===================================================================
--- util-linux-2.19.orig/libblkid/src/superblocks/superblocks.h
+++ util-linux-2.19/libblkid/src/superblocks/superblocks.h
@@ -54,6 +54,7 @@ extern const struct blkid_idinfo luks_id
 extern const struct blkid_idinfo highpoint37x_idinfo;
 extern const struct blkid_idinfo highpoint45x_idinfo;
 extern const struct blkid_idinfo squashfs_idinfo;
+extern const struct blkid_idinfo squashfs3_idinfo;
 extern const struct blkid_idinfo netware_idinfo;
 extern const struct blkid_idinfo sysv_idinfo;
 extern const struct blkid_idinfo xenix_idinfo;
Index: util-linux-2.19/shlibs/blkid/src/superblocks/squashfs.c
===================================================================
--- util-linux-2.19.orig/libblkid/src/superblocks/squashfs.c
+++ util-linux-2.19/libblkid/src/superblocks/squashfs.c
@@ -31,20 +31,46 @@ struct sqsh_super_block {
 static int probe_squashfs(blkid_probe pr, const struct blkid_idmag *mag)
 {
 	struct sqsh_super_block *sq;
+	uint16_t major;
+	uint16_t minor;
 
 	sq = blkid_probe_get_sb(pr, mag, struct sqsh_super_block);
 	if (!sq)
 		return -1;
 
-	if (strcmp(mag->magic, "sqsh") == 0 ||
-	    strcmp(mag->magic, "qshs") == 0)
-		blkid_probe_sprintf_version(pr, "%u.%u",
-				sq->s_major,
-				sq->s_minor);
-	else
-		blkid_probe_sprintf_version(pr, "%u.%u",
-				swab16(sq->s_major),
-				swab16(sq->s_minor));
+	major = le16_to_cpu(sq->s_major);
+	minor = le16_to_cpu(sq->s_minor);
+	if (major < 4)
+		return -1;
+
+	blkid_probe_sprintf_version(pr, "%u.%u", major, minor);
+
+	return 0;
+}
+
+static int probe_squashfs3(blkid_probe pr, const struct blkid_idmag *mag)
+{
+	struct sqsh_super_block *sq;
+	uint16_t major;
+	uint16_t minor;
+
+	sq = blkid_probe_get_sb(pr, mag, struct sqsh_super_block);
+	if (!sq)
+		return -1;
+
+	if (strcmp(mag->magic, "sqsh") == 0) {
+		major = be16_to_cpu(sq->s_major);
+		minor = be16_to_cpu(sq->s_minor);
+	} else {
+		major = le16_to_cpu(sq->s_major);
+		minor = le16_to_cpu(sq->s_minor);
+	}
+
+	if (major > 3)
+		return -1;
+
+	blkid_probe_sprintf_version(pr, "%u.%u", major, minor);
+
 	return 0;
 }
 
@@ -55,14 +81,21 @@ const struct blkid_idinfo squashfs_idinf
 	.probefunc	= probe_squashfs,
 	.magics		=
 	{
-		{ .magic = "sqsh", .len = 4 },
-		{ .magic = "hsqs", .len = 4 }, /* swap */
-
-		/* LZMA version */
-		{ .magic = "qshs", .len = 4 },
-		{ .magic = "shsq", .len = 4 }, /* swap */
+		{ .magic = "hsqs", .len = 4 },
 		{ NULL }
 	}
 };
 
+const struct blkid_idinfo squashfs3_idinfo =
+{
+	.name		= "squashfs3",
+	.usage		= BLKID_USAGE_FILESYSTEM,
+	.probefunc	= probe_squashfs3,
+	.magics		=
+	{
+		{ .magic = "sqsh", .len = 4 }, /* big endian */
+		{ .magic = "hsqs", .len = 4 }, /* little endian */
+		{ NULL }
+	}
+};