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authorChristophe Grenier <grenier@cgsecurity.org>2007-10-29 22:38:52 +0100
committerChristophe Grenier <grenier@cgsecurity.org>2007-10-29 22:38:52 +0100
commit9928d99936105b4653d2d1b8ca74dc3ffba5c71e (patch)
tree06aa4f5e9f0055027c6fb54dd47a8414cf2fba32 /src/jfs.c
First version in git
Diffstat (limited to 'src/jfs.c')
-rw-r--r--src/jfs.c119
1 files changed, 119 insertions, 0 deletions
diff --git a/src/jfs.c b/src/jfs.c
new file mode 100644
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+++ b/src/jfs.c
@@ -0,0 +1,119 @@
+/*
+
+ File: jfs.c
+
+ Copyright (C) 2004-2007 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
+#ifdef HAVE_STRING_H
+#include <string.h>
+#endif
+#include "types.h"
+#include "common.h"
+#include "jfs_superblock.h"
+#include "jfs.h"
+#include "fnctdsk.h"
+#include "log.h"
+#include "guid_cpy.h"
+
+static int test_JFS(disk_t *disk_car, const struct jfs_superblock *sb,partition_t *partition,const int verbose, const int dump_ind);
+
+int check_JFS(disk_t *disk_car,partition_t *partition,const int verbose)
+{
+ unsigned char *buffer=(unsigned char*)MALLOC(JFS_SUPERBLOCK_SIZE);
+ if(disk_car->read(disk_car,JFS_SUPERBLOCK_SIZE, buffer, partition->part_offset+64*512)!=0)
+ {
+ free(buffer);
+ return 1;
+ }
+ if(test_JFS(disk_car,(struct jfs_superblock*)buffer,partition,verbose,0)!=0)
+ {
+ free(buffer);
+ return 1;
+ }
+ set_JFS_info(disk_car,(struct jfs_superblock*)buffer,partition,verbose,0);
+ free(buffer);
+ return 0;
+}
+
+int set_JFS_info(disk_t *disk_car, const struct jfs_superblock *sb,partition_t *partition,const int verbose, const int dump_ind)
+{
+ snprintf(partition->info,sizeof(partition->info),"JFS %u",(unsigned int)le32(sb->s_version));
+ partition->fsname[0]='\0';
+ if(le32(sb->s_version)==1)
+ {
+ set_part_name(partition,sb->s_fpack,11);
+ }
+ return 0;
+}
+
+/*
+Primary superblock is at 0x8000
+*/
+int recover_JFS(disk_t *disk_car, const struct jfs_superblock *sb,partition_t *partition,const int verbose, const int dump_ind)
+{
+ if(test_JFS(disk_car,sb,partition,verbose,dump_ind)!=0)
+ return 1;
+ set_JFS_info(disk_car,sb,partition,verbose,dump_ind);
+ partition->part_type_i386=P_LINUX;
+ partition->part_type_sun=PSUN_LINUX;
+ partition->part_type_mac=PMAC_LINUX;
+ partition->part_type_gpt=GPT_ENT_TYPE_LINUX_DATA;
+ partition->part_size=(uint64_t)le32(sb->s_pbsize) * le64(sb->s_size) +
+ le32(sb->s_bsize) * (le24(sb->s_fsckpxd.len)+le24(sb->s_logpxd.len));
+ partition->boot_sector=0;
+ partition->blocksize=le32(sb->s_bsize);
+ guid_cpy(&partition->part_uuid, (const efi_guid_t *)&sb->s_uuid);
+ if(verbose>0)
+ {
+ log_info("\n");
+ log_info("recover_JFS: s_blocksize=%lu\n",partition->blocksize);
+ log_info("recover_JFS: s_size %lu\n",(long unsigned int)le64(sb->s_size));
+ log_info("recover_JFS: s_fsckpxd.len:%d\n", (int)le24(sb->s_fsckpxd.len));
+ log_info("recover_JFS: s_logpxd.len:%d\n", (int)le24(sb->s_logpxd.len));
+ log_info("recover_JFS: part_size %lu\n",(long unsigned)(partition->part_size/disk_car->sector_size));
+ }
+ return 0;
+}
+
+static int test_JFS(disk_t *disk_car, const struct jfs_superblock *sb,partition_t *partition,const int verbose, const int dump_ind)
+{
+ if(memcmp(sb->s_magic,"JFS1",4)!=0)
+ return 1;
+ if(dump_ind!=0)
+ {
+ log_info("\nJFS magic value at %u/%u/%u\n", offset2cylinder(disk_car,partition->part_offset),offset2head(disk_car,partition->part_offset),offset2sector(disk_car,partition->part_offset));
+ /* There is a little offset ... */
+ dump_log(sb,DEFAULT_SECTOR_SIZE);
+ }
+ /*
+ if( le32(sb->s_agsize) >= (1 << L2BPERDMAP) ) {
+ return 2;
+ }
+ if(partition->part_size!=0 && (partition->part_size<le64(sb->s_size)))
+ return 8;
+ */
+ partition->upart_type=UP_JFS;
+ return 0;
+}