volume_id: rename subdirectory

1 files changed, 192 insertions, 0 deletions

diff --git a/extras/volume_id/lib/ocfs.c b/extras/volume_id/lib/ocfs.c
new file mode 100644
index 0000000000..b376ead833
--- /dev/null
+++ b/extras/volume_id/lib/ocfs.c
@@ -0,0 +1,192 @@
+/*
+ * volume_id - reads filesystem label and uuid
+ *
+ * Copyright (C) 2004 Andre Masella <andre@masella.no-ip.org>
+ * Copyright (C) 2005 Kay Sievers <kay.sievers@vrfy.org>
+ *
+ *	This program is free software; you can redistribute it and/or modify it
+ *	under the terms of the GNU General Public License as published by the
+ *	Free Software Foundation version 2 of the License.
+ */
+
+#ifndef _GNU_SOURCE
+#define _GNU_SOURCE 1
+#endif
+
+#ifdef HAVE_CONFIG_H
+#  include <config.h>
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include <errno.h>
+#include <ctype.h>
+
+#include "libvolume_id.h"
+#include "util.h"
+
+
+struct ocfs1_super_block_header {
+	uint32_t	minor_version;
+	uint32_t	major_version;
+	uint8_t		signature[128];
+	uint8_t		mount_point[128];
+	uint64_t	serial_num;
+	uint64_t	device_size;
+	uint64_t	start_off;
+	uint64_t	bitmap_off;
+	uint64_t	publ_off;
+	uint64_t	vote_off;
+	uint64_t	root_bitmap_off;
+	uint64_t	data_start_off;
+	uint64_t	root_bitmap_size;
+	uint64_t	root_off;
+	uint64_t	root_size;
+	uint64_t	cluster_size;
+	uint64_t	num_nodes;
+	uint64_t	num_clusters;
+	uint64_t	dir_node_size;
+	uint64_t	file_node_size;
+	uint64_t	internal_off;
+	uint64_t	node_cfg_off;
+	uint64_t	node_cfg_size;
+	uint64_t	new_cfg_off;
+	uint32_t	prot_bits;
+	int32_t		excl_mount;
+} PACKED;
+
+struct ocfs1_super_block_label {
+	struct ocfs1_disk_lock {
+		uint32_t	curr_master;
+		uint8_t		file_lock;
+		uint8_t		compat_pad[3];
+		uint64_t	last_write_time;
+		uint64_t	last_read_time;
+		uint32_t	writer_node_num;
+		uint32_t	reader_node_num;
+		uint64_t	oin_node_map;
+		uint64_t	dlock_seq_num;
+	} PACKED disk_lock;
+	uint8_t		label[64];
+	uint16_t	label_len;
+	uint8_t		vol_id[16];
+	uint16_t	vol_id_len;
+	uint8_t		cluster_name[64];
+	uint16_t	cluster_name_len;
+} PACKED;
+
+struct ocfs2_super_block {
+	uint8_t		i_signature[8];
+	uint32_t	i_generation;
+	int16_t		i_suballoc_slot;
+	uint16_t	i_suballoc_bit;
+	uint32_t	i_reserved0;
+	uint32_t	i_clusters;
+	uint32_t	i_uid;
+	uint32_t	i_gid;
+	uint64_t	i_size;
+	uint16_t	i_mode;
+	uint16_t	i_links_count;
+	uint32_t	i_flags;
+	uint64_t	i_atime;
+	uint64_t	i_ctime;
+	uint64_t	i_mtime;
+	uint64_t	i_dtime;
+	uint64_t	i_blkno;
+	uint64_t	i_last_eb_blk;
+	uint32_t	i_fs_generation;
+	uint32_t	i_atime_nsec;
+	uint32_t	i_ctime_nsec;
+	uint32_t	i_mtime_nsec;
+	uint64_t	i_reserved1[9];
+	uint64_t	i_pad1;
+	uint16_t	s_major_rev_level;
+	uint16_t	s_minor_rev_level;
+	uint16_t	s_mnt_count;
+	int16_t		s_max_mnt_count;
+	uint16_t	s_state;
+	uint16_t	s_errors;
+	uint32_t	s_checkinterval;
+	uint64_t	s_lastcheck;
+	uint32_t	s_creator_os;
+	uint32_t	s_feature_compat;
+	uint32_t	s_feature_incompat;
+	uint32_t	s_feature_ro_compat;
+	uint64_t	s_root_blkno;
+	uint64_t	s_system_dir_blkno;
+	uint32_t	s_blocksize_bits;
+	uint32_t	s_clustersize_bits;
+	uint16_t	s_max_slots;
+	uint16_t	s_reserved1;
+	uint32_t	s_reserved2;
+	uint64_t	s_first_cluster_group;
+	uint8_t		s_label[64];
+	uint8_t		s_uuid[16];
+} PACKED;
+
+int volume_id_probe_ocfs1(struct volume_id *id, uint64_t off)
+{
+	const uint8_t *buf;
+	struct ocfs1_super_block_header *osh;
+	struct ocfs1_super_block_label *osl;
+
+	buf = volume_id_get_buffer(id, off, 0x200);
+	if (buf == NULL)
+		return -1;
+
+	osh = (struct ocfs1_super_block_header *) buf;
+	if (memcmp(osh->signature, "OracleCFS", 9) != 0)
+		return -1;
+	snprintf(id->type_version, sizeof(id->type_version)-1,
+		 "%u.%u", osh->major_version, osh->minor_version);
+
+	dbg("found OracleCFS signature, now reading label");
+	buf = volume_id_get_buffer(id, off + 0x200, 0x200);
+	if (buf == NULL)
+		return -1;
+
+	osl = (struct ocfs1_super_block_label *) buf;
+	volume_id_set_usage(id, VOLUME_ID_FILESYSTEM);
+	if (osl->label_len <= 64) {
+		volume_id_set_label_raw(id, osl->label, 64);
+		volume_id_set_label_string(id, osl->label, 64);
+	}
+	if (osl->vol_id_len == 16)
+		volume_id_set_uuid(id, osl->vol_id, UUID_DCE);
+	id->type = "ocfs";
+	return 0;
+}
+
+#define OCFS2_MAX_BLOCKSIZE		0x1000
+#define OCFS2_SUPER_BLOCK_BLKNO		2
+
+int volume_id_probe_ocfs2(struct volume_id *id, uint64_t off)
+{
+	const uint8_t *buf;
+	struct ocfs2_super_block *os;
+	size_t blksize;
+
+	dbg("probing at offset 0x%llx", (unsigned long long) off);
+
+	for (blksize = 0x200; blksize <= OCFS2_MAX_BLOCKSIZE; blksize <<= 1) {
+		buf = volume_id_get_buffer(id, off + OCFS2_SUPER_BLOCK_BLKNO * blksize, 0x200);
+		if (buf == NULL)
+			return -1;
+
+		os = (struct ocfs2_super_block *) buf;
+		if (memcmp(os->i_signature, "OCFSV2", 6) != 0)
+			continue;
+
+		volume_id_set_usage(id, VOLUME_ID_FILESYSTEM);
+		volume_id_set_label_raw(id, os->s_label, 64);
+		volume_id_set_label_string(id, os->s_label, 64);
+		volume_id_set_uuid(id, os->s_uuid, UUID_DCE);
+		snprintf(id->type_version, sizeof(id->type_version)-1,
+			 "%u.%u", os->s_major_rev_level, os->s_minor_rev_level);
+		id->type = "ocfs2";
+		return 0;
+	}
+	return -1;
+}