Locate lost GFS2 partition but not yet the size

src/Makefile.am

@@ -16,8 +16,8 @@ EXTRA_PROGRAMS		= photorecf
 base_C			= autoset.c common.c crc.c ewf.c fnctdsk.c hdaccess.c hdcache.c hdwin32.c hidden.c hpa_dco.c intrf.c iso.c log.c log_part.c misc.c msdos.c parti386.c partgpt.c parthumax.c partmac.c partsun.c partnone.c partxbox.c io_redir.c ntfs_io.c ntfs_utl.c partauto.c sudo.c unicode.c win32.c
 base_H			= alignio.h autoset.h common.h crc.h ewf.h fnctdsk.h hdaccess.h hdwin32.h hidden.h guid_cmp.h guid_cpy.h hdcache.h hpa_dco.h intrf.h iso.h iso9660.h lang.h log.h log_part.h misc.h types.h io_redir.h msdos.h ntfs_utl.h parti386.h partgpt.h parthumax.h partmac.h partsun.h partxbox.h partauto.h sudo.h unicode.h win32.h
 
-fs_C			= analyse.c bfs.c bsd.c btrfs.c cramfs.c exfat.c fat.c fatx.c ext2.c jfs.c hfs.c hfsp.c hpfs.c luks.c lvm.c md.c netware.c ntfs.c rfs.c savehdr.c sun.c swap.c sysv.c ufs.c vmfs.c xfs.c zfs.c
-fs_H			= analyse.h bfs.h bsd.h btrfs.h cramfs.h exfat.h fat.h fatx.h ext2.h jfs_superblock.h jfs.h hfs.h hfsp.h hpfs.h luks.h lvm.h md.h netware.h ntfs.h rfs.h savehdr.h sun.h swap.h sysv.h ufs.h vmfs.h xfs.h zfs.h
+fs_C			= analyse.c bfs.c bsd.c btrfs.c cramfs.c exfat.c fat.c fatx.c ext2.c jfs.c gfs2.c hfs.c hfsp.c hpfs.c luks.c lvm.c md.c netware.c ntfs.c rfs.c savehdr.c sun.c swap.c sysv.c ufs.c vmfs.c xfs.c zfs.c
+fs_H			= analyse.h bfs.h bsd.h btrfs.h cramfs.h exfat.h fat.h fatx.h ext2.h jfs_superblock.h jfs.h gfs2.h hfs.h hfsp.h hpfs.h luks.h lvm.h md.h netware.h ntfs.h rfs.h savehdr.h sun.h swap.h sysv.h ufs.h vmfs.h xfs.h zfs.h
 
 testdisk_ncurses_C	= addpart.c adv.c askloc.c chgtype.c chgtypen.c dimage.c dirn.c dirpart.c diskacc.c diskcapa.c edit.c ext2_sb.c ext2_sbn.c fat1x.c fat32.c fat_adv.c fat_cluster.c fatn.c geometry.c godmode.c hiddenn.c intrface.c intrfn.c nodisk.c ntfs_adv.c ntfs_fix.c ntfs_udl.c parti386n.c partgptn.c partmacn.c partsunn.c partxboxn.c tanalyse.c tbanner.c tdelete.c tdiskop.c tdisksel.c testdisk.c texfat.c thfs.c tload.c tlog.c tmbrcode.c tntfs.c toptions.c tpartwr.c 
 testdisk_ncurses_H	= addpart.h adv.h askloc.h chgtype.h chgtypen.h dimage.h dirn.h dirpart.h diskacc.h diskcapa.h edit.h ext2_sb.h ext2_sbn.h fat1x.h fat32.h fat_adv.h fat_cluster.h fatn.h geometry.h godmode.h hiddenn.h intrface.h intrfn.h nodisk.h ntfs_udl.h partgptn.h parti386n.h partmacn.h partsunn.h partxboxn.h tanalyse.h tdelete.h tdiskop.h tdisksel.h texfat.h thfs.h tload.h tlog.h tmbrcode.h tntfs.h toptions.h tpartwr.h 

src/analyse.c

@@ -38,6 +38,7 @@
 #include "ext2.h"
 #include "fat.h"
 #include "fatx.h"
+#include "gfs2.h"
 #include "hfs.h"
 #include "hfsp.h"
 #include "jfs_superblock.h"
@@ -362,6 +363,7 @@ int search_type_128(unsigned char *buffer, disk_t *disk, partition_t *partition,
     const struct reiser4_master_sb *rfs4=(const struct reiser4_master_sb *)data;
     const struct ufs_super_block *ufs=(const struct ufs_super_block *)data;
     const struct btrfs_super_block *btrfs=(const struct btrfs_super_block*)data;
+    const struct gfs2_sb *gfs2=(const struct gfs2_sb *)data;
     /* 64k offset */
     /* Test ReiserFS */
     if((memcmp(rfs->s_magic,"ReIs",4) == 0 ||
@@ -376,7 +378,9 @@ int search_type_128(unsigned char *buffer, disk_t *disk, partition_t *partition,
     if(memcmp(&btrfs->magic, BTRFS_MAGIC, 8)==0 &&
       recover_btrfs(disk, btrfs, partition, verbose, dump_ind)==0)
       return 1;
-    //  if(recover_gfs2(disk,(buffer+0x400),partition,verbose,dump_ind)==0) return 1;
+    if(gfs2->sb_header.mh_magic==be32(GFS2_MAGIC) &&
+	recover_gfs2(disk, gfs2, partition, dump_ind)==0)
+      return 1;
   }
   return 0;
 }
@@ -409,7 +413,8 @@ int check_linux(disk_t *disk, partition_t *partition, const int verbose)
       check_cramfs(disk, partition, verbose)==0 ||
       check_xfs(disk, partition, verbose)==0 ||
       check_LUKS(disk, partition)==0 ||
-      check_btrfs(disk, partition, verbose)==0)
+      check_btrfs(disk, partition, verbose)==0 ||
+      check_gfs2(disk, partition)==0)
     return 0;
   return 1;
 }

src/common.h

@@ -237,6 +237,7 @@ enum upart_type {
   UP_FAT32=0x0b,
   UP_FATX,
   UP_FREEBSD,
+  UP_GFS2,
   UP_HFS,
   UP_HFSP,
   UP_HFSX,

src/gfs2.c

@@ -0,0 +1,90 @@
+/*
+
+    File: gfs2.c
+
+    Copyright (C) 2011 Christophe GRENIER <grenier@cgsecurity.org>
+  
+    This software 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; either version 2 of the License, or
+    (at your option) any later version.
+  
+    This program 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 General Public License for more details.
+  
+    You should have received a copy of the GNU General Public License along
+    with this program; if not, write the Free Software Foundation, Inc., 51
+    Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+#include <stdio.h>
+#ifdef HAVE_STDLIB_H
+#include <stdlib.h>
+#endif
+ 
+#include "types.h"
+#include "common.h"
+#include "gfs2.h"
+#include "fnctdsk.h"
+#include "log.h"
+
+static int set_gfs2_info(const struct gfs2_sb *sb, partition_t *partition)
+{
+  partition->info[0]='\0';
+  return 0;
+}
+
+static int test_gfs2(disk_t *disk, const struct gfs2_sb *sb, partition_t *partition, const int dump_ind)
+{
+  if(sb->sb_header.mh_magic != be32(GFS2_MAGIC))
+    return 1;
+  if(sb->sb_header.mh_format != be32(GFS2_FORMAT_SB))
+    return 1;
+  partition->upart_type=UP_GFS2;
+  if(dump_ind!=0)
+  {
+    log_info("\ngfs2 magic value at %u/%u/%u\n",
+	offset2cylinder(disk, partition->part_offset),
+	offset2head(disk, partition->part_offset),
+	offset2sector(disk, partition->part_offset));
+    dump_log(sb,DEFAULT_SECTOR_SIZE);
+  }
+  return 0;
+}
+
+int check_gfs2(disk_t *disk, partition_t *partition)
+{
+  unsigned char *buffer;
+  buffer=(unsigned char*)MALLOC(512);
+  if(disk->pread(disk, buffer, 512, partition->part_offset + (GFS2_SB_ADDR << GFS2_BASIC_BLOCK_SHIFT)) != 512)
+  {
+    free(buffer);
+    return 1;
+  }
+  if(test_gfs2(disk, (const struct gfs2_sb *)buffer, partition,0)!=0)
+  {
+    free(buffer);
+    return 1;
+  }
+  set_gfs2_info((const struct gfs2_sb *)buffer, partition);
+  free(buffer);
+  return 0;
+}
+
+int recover_gfs2(disk_t *disk, const struct gfs2_sb *sb, partition_t *partition, const int dump_ind)
+{
+  if(test_gfs2(disk,sb,partition,dump_ind)!=0)
+    return 1;
+  set_gfs2_info(sb, partition);
+  partition->part_size=disk->sector_size;
+  partition->part_type_i386=(unsigned char)P_LINUX;
+  return 0;
+}
+
+

src/gfs2.h

@@ -0,0 +1,86 @@
+/*
+
+    File: gfs2.h
+
+    Copyright (C) 2011 Christophe GRENIER <grenier@cgsecurity.org>
+  
+    This software 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; either version 2 of the License, or
+    (at your option) any later version.
+  
+    This program 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 General Public License for more details.
+  
+    You should have received a copy of the GNU General Public License along
+    with this program; if not, write the Free Software Foundation, Inc., 51
+    Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+ */
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+// Structure from gfs2_ondisk.h
+#define GFS2_MAGIC		0x01161970
+#define GFS2_BASIC_BLOCK	512
+#define GFS2_BASIC_BLOCK_SHIFT	9
+#define GFS2_FORMAT_SB		100
+
+/*
+ * An on-disk inode number
+ */
+
+struct gfs2_inum {
+	uint64_t no_formal_ino;
+	uint64_t no_addr;
+};
+
+struct gfs2_meta_header {
+	uint32_t mh_magic;
+	uint32_t mh_type;
+	uint64_t __pad0;		/* Was generation number in gfs1 */
+	uint32_t mh_format;
+	/* This union is to keep userspace happy */
+	union {
+		uint32_t mh_jid;		/* Was incarnation number in gfs1 */
+		uint32_t __pad1;
+	};
+};
+/* Address of superblock in GFS2 basic blocks */
+#define GFS2_SB_ADDR		128
+#define GFS2_LOCKNAME_LEN	64
+
+struct gfs2_sb {
+	struct gfs2_meta_header sb_header;
+
+	uint32_t sb_fs_format;
+	uint32_t sb_multihost_format;
+	uint32_t  __pad0;	/* Was superblock flags in gfs1 */
+
+	uint32_t sb_bsize;
+	uint32_t sb_bsize_shift;
+	uint32_t __pad1;	/* Was journal segment size in gfs1 */
+
+	struct gfs2_inum sb_master_dir; /* Was jindex dinode in gfs1 */
+	struct gfs2_inum __pad2; /* Was rindex dinode in gfs1 */
+	struct gfs2_inum sb_root_dir;
+
+	char sb_lockproto[GFS2_LOCKNAME_LEN];
+	char sb_locktable[GFS2_LOCKNAME_LEN];
+
+	struct gfs2_inum __pad3; /* Was quota inode in gfs1 */
+	struct gfs2_inum __pad4; /* Was licence inode in gfs1 */
+#define GFS2_HAS_UUID 1
+	uint8_t sb_uuid[16]; /* The UUID, maybe 0 for backwards compat */
+};
+
+//
+int check_gfs2(disk_t *disk_car, partition_t *partition);
+int recover_gfs2(disk_t *disk_car, const struct gfs2_sb *sb, partition_t *partition, const int dump_ind);
+
+#ifdef __cplusplus
+} /* closing brace for extern "C" */
+#endif

src/partnone.c

@@ -94,6 +94,7 @@ static const struct systypes none_sys_types[] = {
   {UP_FAT16,	"FAT16"},
   {UP_FAT32,	"FAT32"},
   {UP_FREEBSD,	"FreeBSD"},
+  {UP_GFS2,	"GFS2"},
   {UP_HFS,	"HFS"},
   {UP_HFSP,	"HFS+"},
   {UP_HFSX,	"HFSX"},