1 files changed, 87 insertions, 0 deletions
diff --git a/libblkid/src/superblocks/zonefs.c b/libblkid/src/superblocks/zonefs.c
new file mode 100644
index 0000000..4c826ec
--- /dev/null
+++ b/libblkid/src/superblocks/zonefs.c
@@ -0,0 +1,87 @@
+/*
+ * Copyright (C) 2020 Western Digital Corporation or its affiliates.
+ *
+ * This file may be redistributed under the terms of the
+ * GNU Lesser General Public License
+ */
+#include <stddef.h>
+#include <string.h>
+
+#include "superblocks.h"
+
+#define ZONEFS_MAGIC		"SFOZ" /* 0x5a4f4653 'Z' 'O' 'F' 'S' */
+#define ZONEFS_MAGIC_SIZE	4
+#define ZONEFS_MAGIC_OFST	0
+#define ZONEFS_UUID_SIZE	16
+#define ZONEFS_LABEL_SIZE	32
+#define ZONEFS_SB_OFST		0
+
+#define ZONEFS_BLOCK_SIZE	4096U
+
+/* All in little-endian */
+struct zonefs_super {
+
+	/* Magic number */
+	int32_t		s_magic;
+
+	/* Checksum */
+	int32_t		s_crc;
+
+	/* Volume label */
+	char		s_label[ZONEFS_LABEL_SIZE];
+
+	/* 128-bit uuid */
+	uint8_t		s_uuid[ZONEFS_UUID_SIZE];
+
+	/* Features */
+	int64_t		s_features;
+
+	/* UID/GID to use for files */
+	int32_t		s_uid;
+	int32_t		s_gid;
+
+	/* File permissions */
+	int32_t		s_perm;
+
+	/* Padding to 4096 bytes */
+	/* uint8_t		s_reserved[4020]; */
+
+} __attribute__ ((packed));
+
+static int probe_zonefs(blkid_probe pr,
+		const struct blkid_idmag *mag  __attribute__((__unused__)))
+{
+	struct zonefs_super *sb;
+
+	sb = (struct zonefs_super *)
+		blkid_probe_get_buffer(pr, ZONEFS_SB_OFST,
+				       sizeof(struct zonefs_super));
+	if (!sb)
+		return errno ? -errno : 1;
+
+	if (sb->s_label[0])
+		blkid_probe_set_label(pr, (unsigned char *) sb->s_label,
+				      sizeof(sb->s_label));
+
+	blkid_probe_set_uuid(pr, sb->s_uuid);
+	blkid_probe_set_block_size(pr, ZONEFS_BLOCK_SIZE);
+
+	return 0;
+}
+
+const struct blkid_idinfo zonefs_idinfo =
+{
+	.name           = "zonefs",
+	.usage          = BLKID_USAGE_FILESYSTEM,
+	.probefunc      = probe_zonefs,
+	.magics         =
+        {
+		{
+			.magic = (char *)ZONEFS_MAGIC,
+			.len = ZONEFS_MAGIC_SIZE,
+			.kboff = ZONEFS_SB_OFST,
+			.sboff = ZONEFS_MAGIC_OFST,
+		},
+		{ NULL }
+	}
+};