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volume_id: add OCFS (Oracle Cluster File System) support

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Andre Masella 2005-07-17 09:54:40 -04:00 committed by Kay Sievers
parent 422d5becc3
commit 6a5aac78f4
6 changed files with 160 additions and 2 deletions
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3
extras/volume_id/Makefile
View File

@ -33,7 +33,8 @@ override CFLAGS+=-D_FILE_OFFSET_BITS=64
VOLUME_ID_BASE=volume_id
include $(VOLUME_ID_BASE)/Makefile.inc
OBJS = vol_id.o $(VOLUME_ID_OBJS) ../../udev.a
OBJS = vol_id.o $(VOLUME_ID_OBJS)
LIB_OBJS=../../udev.a
HEADERS = $(VOLUME_ID_HEADERS)
$(OBJS): $(HEADERS)

2
extras/volume_id/volume_id/Makefile.inc
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@ -27,6 +27,7 @@ VOLUME_ID_OBJS= \
$(VOLUME_ID_BASE)/sysv.o \
$(VOLUME_ID_BASE)/minix.o \
$(VOLUME_ID_BASE)/luks.o \
$(VOLUME_ID_BASE)/ocfs2.o \
$(VOLUME_ID_BASE)/volume_id.o \
$(VOLUME_ID_BASE)/util.o
@ -58,5 +59,6 @@ VOLUME_ID_HEADERS= \
$(VOLUME_ID_BASE)/sysv.h \
$(VOLUME_ID_BASE)/minix.h \
$(VOLUME_ID_BASE)/luks.h \
$(VOLUME_ID_BASE)/ocfs2.h \
$(VOLUME_ID_BASE)/volume_id.h \
$(VOLUME_ID_BASE)/util.h

125
extras/volume_id/volume_id/ocfs2.c Normal file
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@ -0,0 +1,125 @@
/*
* volume_id - reads filesystem label and uuid
*
* Copyright (C) Andre Masella <andre@masella.no-ip.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#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 <asm/types.h>
#include "volume_id.h"
#include "logging.h"
#include "util.h"
#include "ocfs2.h"
/* All these values are taken from ocfs2-tools's ocfs2_fs.h */
#define OCFS2_VOL_UUID_LEN 16
#define OCFS2_MAX_VOL_LABEL_LEN 64
#define OCFS2_SUPERBLOCK_OFFSET 0x2000
/* This is the superblock. The OCFS2 header files have structs in structs.
This is one has been simplified since we only care about the superblock.
*/
struct ocfs2_super_block {
__u8 i_signature[8]; /* Signature for validation */
__u32 i_generation; /* Generation number */
__s16 i_suballoc_slot; /* Slot suballocator this inode belongs to */
__u16 i_suballoc_bit; /* Bit offset in suballocator block group */
__u32 i_reserved0;
__u32 i_clusters; /* Cluster count */
__u32 i_uid; /* Owner UID */
__u32 i_gid; /* Owning GID */
__u64 i_size; /* Size in bytes */
__u16 i_mode; /* File mode */
__u16 i_links_count; /* Links count */
__u32 i_flags; /* File flags */
__u64 i_atime; /* Access time */
__u64 i_ctime; /* Creation time */
__u64 i_mtime; /* Modification time */
__u64 i_dtime; /* Deletion time */
__u64 i_blkno; /* Offset on disk, in blocks */
__u64 i_last_eb_blk; /* Pointer to last extent block */
__u32 i_fs_generation; /* Generation per fs-instance */
__u32 i_atime_nsec;
__u32 i_ctime_nsec;
__u32 i_mtime_nsec;
__u64 i_reserved1[9];
__u64 i_pad1; /* Generic way to refer to this 64bit union */
/* Normally there is a union of the different block types, but we only care about the superblock. */
__u16 s_major_rev_level;
__u16 s_minor_rev_level;
__u16 s_mnt_count;
__s16 s_max_mnt_count;
__u16 s_state; /* File system state */
__u16 s_errors; /* Behaviour when detecting errors */
__u32 s_checkinterval; /* Max time between checks */
__u64 s_lastcheck; /* Time of last check */
__u32 s_creator_os; /* OS */
__u32 s_feature_compat; /* Compatible feature set */
__u32 s_feature_incompat; /* Incompatible feature set */
__u32 s_feature_ro_compat; /* Readonly-compatible feature set */
__u64 s_root_blkno; /* Offset, in blocks, of root directory dinode */
__u64 s_system_dir_blkno; /* Offset, in blocks, of system directory dinode */
__u32 s_blocksize_bits; /* Blocksize for this fs */
__u32 s_clustersize_bits; /* Clustersize for this fs */
__u16 s_max_slots; /* Max number of simultaneous mounts before tunefs required */
__u16 s_reserved1;
__u32 s_reserved2;
__u64 s_first_cluster_group; /* Block offset of 1st cluster group header */
__u8 s_label[OCFS2_MAX_VOL_LABEL_LEN]; /* Label for mounting, etc. */
__u8 s_uuid[OCFS2_VOL_UUID_LEN]; /* 128-bit uuid */
} __attribute__((__packed__));
int volume_id_probe_ocfs2(struct volume_id *id, __u64 off)
{
struct ocfs2_super_block *os;
dbg("probing at offset 0x%llx", (unsigned long long) off);
os = (struct ocsf2_super_block *) volume_id_get_buffer(id, off + OCFS2_SUPERBLOCK_OFFSET, 0x200);
if (os == NULL)
return -1;
if (strcmp(os->i_signature, "OCFSV2") != 0) {
return -1;
}
volume_id_set_usage(id, VOLUME_ID_FILESYSTEM);
volume_id_set_label_raw(id, os->s_label, OCFS2_MAX_VOL_LABEL_LEN < VOLUME_ID_LABEL_SIZE ?
OCFS2_MAX_VOL_LABEL_LEN : VOLUME_ID_LABEL_SIZE);
volume_id_set_label_string(id, os->s_label, OCFS2_MAX_VOL_LABEL_LEN < VOLUME_ID_LABEL_SIZE ?
OCFS2_MAX_VOL_LABEL_LEN : VOLUME_ID_LABEL_SIZE);
volume_id_set_uuid(id, os->s_uuid, UUID_DCE);
id->type = "ocfs2";
return 0;
}

26
extras/volume_id/volume_id/ocfs2.h Normal file
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@ -0,0 +1,26 @@
/*
* volume_id - reads filesystem label and uuid
*
* Copyright (C) Andre Masella <andre@masella.no-ip.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef _VOLUME_ID_OCFS2_
#define _VOLUME_ID_OCFS2_
extern int volume_id_probe_ocfs2(struct volume_id *id, __u64 off);
#endif

4
extras/volume_id/volume_id/volume_id.c
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@ -69,6 +69,7 @@
#include "minix.h"
#include "mac.h"
#include "msdos.h"
#include "ocfs2.h"
int volume_id_probe_all(struct volume_id *id, unsigned long long off, unsigned long long size)
{
@ -169,6 +170,9 @@ int volume_id_probe_all(struct volume_id *id, unsigned long long off, unsigned l
if (volume_id_probe_minix(id, off) == 0)
goto exit;
if (volume_id_probe_ocfs2(id, off) == 0)
goto exit;
return -1;
exit:

2
extras/volume_id/volume_id/volume_id.h
View File

@ -21,7 +21,7 @@
#ifndef _VOLUME_ID_H_
#define _VOLUME_ID_H_
#define VOLUME_ID_VERSION 45
#define VOLUME_ID_VERSION 46
#define VOLUME_ID_LABEL_SIZE 64
#define VOLUME_ID_UUID_SIZE 36