/usr/include/tsk3/fs/tsk_ffs.h is in libtsk-dev 3.2.3-2.2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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** The Sleuth Kit
**
** Brian Carrier [carrier <at> sleuthkit [dot] org]
** Copyright (c) 2003-2008 Brian Carrier. All rights reserved
**
** TASK
** Copyright (c) 2002 @stake Inc. All rights reserved
**
** This software is distributed under the Common Public License 1.0
*/
/*
* Contains the structures and function APIs for FFS file system support.
*/
#ifndef _TSK_FFS_H
#define _TSK_FFS_H
#ifdef __cplusplus
extern "C" {
#endif
typedef uint32_t FFS_GRPNUM_T;
#define PRI_FFSGRP PRIu32
/*
** CONSTANTS
**/
#define FFS_FIRSTINO 0 /* 0 & 1 are reserved (1 was bad blocks) */
#define FFS_ROOTINO 2 /* location of root directory inode */
#define FFS_NDADDR 12
#define FFS_NIADDR 3
#define UFS1_SBOFF 8192
#define UFS2_SBOFF 65536
#define UFS2_SBOFF2 262144
#define UFS1_FS_MAGIC 0x011954
#define UFS2_FS_MAGIC 0x19540119
#define FFS_MAXNAMLEN 255
#define FFS_MAXPATHLEN 1024
#define FFS_DIRBLKSIZ 512
#define FFS_FILE_CONTENT_LEN ((FFS_NDADDR + FFS_NIADDR) * sizeof(TSK_DADDR_T))
typedef struct {
uint8_t dir_num[4];
uint8_t blk_free[4];
uint8_t ino_free[4];
uint8_t frag_free[4];
} ffs_csum1;
typedef struct {
uint8_t dir_num[8];
uint8_t blk_free[8];
uint8_t ino_free[8];
uint8_t frag_free[8];
uint8_t clust_free[8];
uint8_t f1[24];
} ffs_csum2;
/*
* Super Block Structure
*/
// UFS 1
typedef struct {
uint8_t f1[8];
/* Offsets in each cylinder group */
uint8_t sb_off[4]; /* s32 */
uint8_t gd_off[4]; /* s32 */
uint8_t ino_off[4]; /* s32 */
uint8_t dat_off[4]; /* s32 */
/* How much the base of the admin data in each cyl group changes */
uint8_t cg_delta[4]; /* s32 */
uint8_t cg_cyc_mask[4]; /* s32 */
uint8_t wtime[4]; /* u32 : last written time */
uint8_t frag_num[4]; /* s32 - number of fragments in FS */
uint8_t data_frag_num[4]; /* s32 - number of frags not being used for admin data */
uint8_t cg_num[4]; /* s32 - number of cyl grps in FS */
uint8_t bsize_b[4]; /* s32 - size of block */
uint8_t fsize_b[4]; /* s32 - size of fragment */
uint8_t bsize_frag[4]; /* s32 - num of frag in block */
uint8_t f5[36];
uint8_t fs_fragshift[4]; /* s32 */
uint8_t f6[20];
uint8_t fs_inopb[4]; /* s32 */
uint8_t f7[20];
uint8_t fs_id[8];
uint8_t cg_saddr[4]; /* s32 */
uint8_t cg_ssize_b[4]; /* s32 */
uint8_t fs_cgsize[4]; /* s32 */
uint8_t f7c[12];
uint8_t fs_ncyl[4]; /* s32 */
uint8_t fs_cpg[4]; /* s32 */
uint8_t cg_inode_num[4]; /* s32 */
uint8_t cg_frag_num[4]; /* s32 */
ffs_csum1 cstotal;
uint8_t fs_fmod;
uint8_t fs_clean;
uint8_t fs_ronly;
uint8_t fs_flags;
uint8_t last_mnt[512];
uint8_t f8[648];
uint8_t magic[4]; /* s32 */
uint8_t f9[160]; /* filler so it is a multiple of 512 */
} ffs_sb1;
// UFS 2
typedef struct {
uint8_t f0[8];
/* Offsets in each cylinder group */
uint8_t sb_off[4]; /* s32 */
uint8_t gd_off[4]; /* s32 */
uint8_t ino_off[4]; /* s32 */
uint8_t dat_off[4]; /* s32 */
uint8_t f1[20]; /* s32 */
uint8_t cg_num[4]; /* s32 - number of cyl grps in FS */
uint8_t bsize_b[4]; /* s32 - size of block */
uint8_t fsize_b[4]; /* s32 - size of fragment */
uint8_t bsize_frag[4]; /* s32 - num of frag in block */
uint8_t f2[36];
uint8_t fs_fragshift[4]; /* s32 */
uint8_t f3[20];
uint8_t fs_inopb[4]; /* s32 */
uint8_t f4[32];
uint8_t cg_ssize_b[4]; /* s32 */
uint8_t fs_cgsize[4]; /* s32 */
uint8_t f5[20];
uint8_t cg_inode_num[4]; /* s32 */
uint8_t cg_frag_num[4]; /* s32 - fs_fpg */
uint8_t f6[16];
uint8_t fs_fmod;
uint8_t fs_clean;
uint8_t fs_ronly;
uint8_t f7;
uint8_t last_mnt[468];
uint8_t volname[32];
uint8_t swuid[8];
uint8_t f8[288];
ffs_csum2 cstotal;
uint8_t wtime[8]; /* u32 : last written time */
uint8_t frag_num[8]; /* s32 - number of fragments in FS */
uint8_t blk_num[8]; /* s32 - number of blocks in FS */
uint8_t cg_saddr[8];
uint8_t f9[208];
uint8_t fs_flags[4];
uint8_t f10[56];
uint8_t magic[4]; /* s32 */
uint8_t f11[160]; /* filler so it is a multiple of 512 */
} ffs_sb2;
#define FFS_SB_FLAG_UNCLEAN 0x01
#define FFS_SB_FLAG_SOFTDEP 0x02
#define FFS_SB_FLAG_NEEDFSCK 0x04
#define FFS_SB_FLAG_INDEXDIR 0x08
#define FFS_SB_FLAG_ACL 0x10
#define FFS_SB_FLAG_MULTILABEL 0x20
#define FFS_SB_FLAG_UPDATED 0x80
/* How the file system is optimized */
#define FFS_SB_OPT_TIME 0
#define FFS_SB_OPT_SPACE 1
/*
* Cylinder Group Descriptor
*
* UFS1 and UFS2 are the same for the data that we care about unless we
* want the wtime for 'fsstat'.
*/
typedef struct {
uint8_t f1[4];
uint8_t magic[4]; /* 0x090255 */
uint8_t wtime[4]; /* last written time */
uint8_t cg_cgx[4]; /* s32 - my group number */
uint8_t cyl_num[2]; /* number of cyl in this group */
uint8_t ino_num[2]; /* number of inodes in this group */
uint8_t frag_num[4]; /* number of fragments in this group */
ffs_csum1 cs;
uint8_t last_alloc_blk[4]; /* last allocated blk relative to start */
uint8_t last_alloc_frag[4]; /* last alloc frag relative to start */
uint8_t last_alloc_ino[4];
uint8_t avail_frag[8][4];
uint8_t f2b[8];
uint8_t cg_iusedoff[4]; /* s32 */
uint8_t cg_freeoff[4]; /* s32 */
uint8_t f3[72];
} ffs_cgd;
typedef struct {
uint8_t f1[4];
uint8_t magic[4]; /* 0x090255 */
uint8_t f2[4];
uint8_t cg_cgx[4]; /* s32 - my group number */
uint8_t f2a[4]; /* number of cyl in this group */
uint8_t frag_num[4]; /* number of fragments in this group */
ffs_csum1 cs;
uint8_t last_alloc_blk[4]; /* last allocated blk relative to start */
uint8_t last_alloc_frag[4]; /* last alloc frag relative to start */
uint8_t last_alloc_ino[4];
uint8_t avail_frag[8][4];
uint8_t f2b[8];
uint8_t cg_iusedoff[4]; /* s32 */
uint8_t cg_freeoff[4]; /* s32 */
uint8_t cg_nextfreeoff[4];
uint8_t cg_clustersumoff[4];
uint8_t cg_clusteroff[4];
uint8_t cg_nclustersblks[4];
uint8_t cg_niblk[4];
uint8_t cg_initediblk[4];
uint8_t f3a[12];
uint8_t wtime[8];
uint8_t f3[24];
} ffs_cgd2;
/*
* inode
*/
/* ffs_inode1: OpenBSD & FreeBSD etc. */
typedef struct {
uint8_t di_mode[2]; /* u16 */
uint8_t di_nlink[2]; /* s16 */
uint8_t f1[4];
uint8_t di_size[8]; /* u64 */
uint8_t di_atime[4]; /* s32 */
uint8_t di_atimensec[4];
uint8_t di_mtime[4]; /* s32 */
uint8_t di_mtimensec[4];
uint8_t di_ctime[4]; /* s32 */
uint8_t di_ctimensec[4];
uint8_t di_db[12][4]; /* s32 */
uint8_t di_ib[3][4]; /* s32 */
uint8_t f5[8];
uint8_t gen[4];
uint8_t di_uid[4]; /* u32 */
uint8_t di_gid[4]; /* u32 */
uint8_t f6[8];
} ffs_inode1;
/* ffs_inode1b: Solaris */
typedef struct {
uint8_t di_mode[2]; /* u16 */
uint8_t di_nlink[2]; /* s16 */
uint8_t f1[4];
uint8_t di_size[8]; /* u64 */
uint8_t di_atime[4]; /* s32 */
uint8_t f2[4];
uint8_t di_mtime[4]; /* s32 */
uint8_t f3[4];
uint8_t di_ctime[4]; /* s32 */
uint8_t f4[4];
uint8_t di_db[12][4]; /* s32 */
uint8_t di_ib[3][4]; /* s32 */
uint8_t f5[16];
uint8_t di_uid[4]; /* u32 */
uint8_t di_gid[4]; /* u32 */
uint8_t f6[4];
} ffs_inode1b;
typedef struct {
uint8_t di_mode[2]; /* u16 */
uint8_t di_nlink[2]; /* s16 */
uint8_t di_uid[4];
uint8_t di_gid[4];
uint8_t di_blksize[4]; /* u32 inode block size */
uint8_t di_size[8]; /* u64 */
uint8_t di_blocks[8]; /* u64 - bytes held */
uint8_t di_atime[8]; /* s64 */
uint8_t di_mtime[8]; /* s64 */
uint8_t di_ctime[8]; /* s64 */
uint8_t di_crtime[8]; /* s64 */
uint8_t di_mtimensec[4]; /* s32 */
uint8_t di_atimensec[4];
uint8_t di_ctimensec[4];
uint8_t di_crtimensec[4];
uint8_t di_gen[4]; /* s32 generation number */
uint8_t di_kflags[4]; /* u32 kernel flags */
uint8_t di_flags[4]; /* u32 flags */
uint8_t di_extsize[4]; /* s32 size of ext attributes block */
uint8_t di_extb[2][8]; /* Address of ext attribute blocks */
uint8_t di_db[12][8]; /* s32 */
uint8_t di_ib[3][8]; /* s32 */
uint8_t f2[24]; /* s32 */
} ffs_inode2;
#define FFS_IN_FMT 0170000 /* Mask of file type. */
#define FFS_IN_FIFO 0010000 /* Named pipe (fifo). */
#define FFS_IN_CHR 0020000 /* Character device. */
#define FFS_IN_DIR 0040000 /* Directory file. */
#define FFS_IN_BLK 0060000 /* Block device. */
#define FFS_IN_REG 0100000 /* Regular file. */
#define FFS_IN_LNK 0120000 /* Symbolic link. */
#define FFS_IN_SHAD 0130000 /* SOLARIS ONLY */
#define FFS_IN_SOCK 0140000 /* UNIX domain socket. */
#define FFS_IN_WHT 0160000 /* Whiteout. */
#define FFS_IN_ISUID 0004000
#define FFS_IN_ISGID 0002000
#define FFS_IN_ISVTX 0001000
#define FFS_IN_IRUSR 0000400
#define FFS_IN_IWUSR 0000200
#define FFS_IN_IXUSR 0000100
#define FFS_IN_IRGRP 0000040
#define FFS_IN_IWGRP 0000020
#define FFS_IN_IXGRP 0000010
#define FFS_IN_IROTH 0000004
#define FFS_IN_IWOTH 0000002
#define FFS_IN_IXOTH 0000001
typedef struct {
uint8_t reclen[4];
uint8_t nspace;
uint8_t contpad;
uint8_t nlen;
uint8_t name[1]; /* of length nlen and padded so contents are on 8-byte boundary */
} ffs_extattr;
#define FFS_ATTR_CONT(x) \
((((x) + 7 + 7) / 8) * 2)
/*
* Directory Entries
*/
/* ffs_dentry1: new OpenBSD & FreeBSD etc. */
typedef struct {
uint8_t d_ino[4]; /* u32 */
uint8_t d_reclen[2]; /* u16 */
uint8_t d_type; /* u8 */
uint8_t d_namlen; /* u8 */
char d_name[256];
} ffs_dentry1;
/* type field values */
#define FFS_DT_UNKNOWN 0
#define FFS_DT_FIFO 1
#define FFS_DT_CHR 2
#define FFS_DT_DIR 4
#define FFS_DT_BLK 6
#define FFS_DT_REG 8
#define FFS_DT_LNK 10
#define FFS_DT_SOCK 12
#define FFS_DT_WHT 14
/* ffs_dentry2: Solaris and old xBSDs (no type field) */
typedef struct {
uint8_t d_ino[4]; /* u32 */
uint8_t d_reclen[2]; /* u16 */
uint8_t d_namlen[2]; /* u16 */
char d_name[256];
} ffs_dentry2;
#define FFS_DIRSIZ_lcl(len) \
((len + 8 + 3) & ~(3))
/* Return the base fragment for group c
*/
#define cgbase_lcl(fsi, fs, c) \
((TSK_DADDR_T)(tsk_gets32(fsi->endian, (fs)->cg_frag_num) * (c)))
/* Macros to calc the locations of structures in cyl groups */
#define cgstart_lcl(fsi, fs, c) \
((TSK_DADDR_T)((tsk_getu32((fsi)->endian, (fs)->magic) == UFS2_FS_MAGIC) ? \
(cgbase_lcl(fsi, fs, c)) : \
(cgbase_lcl(fsi, fs, c) + tsk_gets32((fsi)->endian, (fs)->cg_delta) * \
((c) & ~(tsk_gets32((fsi)->endian, (fs)->cg_cyc_mask)))) ))
/* cyl grp block */
#define cgtod_lcl(fsi, fs, c) \
((TSK_DADDR_T)(cgstart_lcl(fsi, fs, c) + tsk_gets32(fsi->endian, (fs)->gd_off)))
/* Offset to inode table in cylinder group */
#define cgimin_lcl(fsi, fs, c) \
((TSK_DADDR_T)(cgstart_lcl(fsi, fs, c) + tsk_gets32(fsi->endian, (fs)->ino_off)))
/* 1st data block in cyl grp*/
#define cgdmin_lcl(fsi, fs, c) \
((TSK_DADDR_T)(cgstart_lcl(fsi, fs, c) + tsk_gets32(fsi->endian, (fs)->dat_off)))
/* super blk in cyl grp*/
#define cgsblock_lcl(fsi, fs, c) \
((TSK_DADDR_T)(cgstart_lcl(fsi, fs, c) + tsk_gets32(fsi->endian, (fs)->sb_off)))
/* original:
** blkstofrags(fs, blks)
** ((blks) << (fs)->fs_fragshift)
*/
#define blkstofrags_lcl(fsi, fs, blks) \
((blks) << tsk_gets32(fsi->endian, (fs)->fs_fragshift))
/* original:
** itod(fs, x) \
** ((TSK_DADDR_T)(cgimin(fs, itog(fs, x)) + \
** (blkstofrags((fs), (((x)%(ulong_t)(fs)->cg_inode_num)/(ulong_t)INOPB(fs))))))
*/
#define itod_lcl(fsi, fs, x) \
((TSK_DADDR_T)(cgimin_lcl(fsi, fs, itog_lcl(fsi, fs, x)) + \
(blkstofrags_lcl(fsi, (fs), (((x)%(TSK_DADDR_T)tsk_gets32(fsi->endian, (fs)->cg_inode_num))/ \
(TSK_DADDR_T)tsk_gets32(fsi->endian, (fs)->fs_inopb))))))
/* original:
** itoo(fs, x) ((x) % (uint32_t)INOPB(fs))
*/
#define itoo_lcl(fsi, fs, x) \
((x) % (uint32_t)tsk_getu32(fsi->endian, (fs)->fs_inopb))
/* original:
** #define itog(fs, x) ((x) / (fs)->fs_cg_inode_num)
*/
#define itog_lcl(fsi, fs, x) \
(FFS_GRPNUM_T)((x) / tsk_gets32(fsi->endian, (fs)->cg_inode_num))
/* original:
** dtog(fs, d) ((d) / (fs)->fs_cg_frag_num)
*/
#define dtog_lcl(fsi, fs, d) \
(FFS_GRPNUM_T)((d) / tsk_gets32(fsi->endian, (fs)->cg_frag_num))
#define cg_inosused_lcl(fsi, cgp) \
((uint8_t *)((uint8_t *)(cgp) + tsk_gets32(fsi->endian, (cgp)->cg_iusedoff)))
#define cg_blksfree_lcl(fsi, cgp) \
((uint8_t *)((uint8_t *)(cgp) + tsk_gets32(fsi->endian, (cgp)->cg_freeoff)))
/*
* Structure of a fast file system handle.
*/
typedef struct {
TSK_FS_INFO fs_info; /* super class */
union {
ffs_sb1 *sb1; /* super block buffer */
ffs_sb2 *sb2; /* super block buffer */
} fs;
char *dino_buf; /* cached disk inode */
TSK_INUM_T dino_inum; /* address of cached disk inode */
char *itbl_buf; ///< Cached inode block buffer
TSK_DADDR_T itbl_addr; ///< Address where inode block buf was read from:w
char *grp_buf; ///< Cached cylinder group buffer
FFS_GRPNUM_T grp_num; ///< Cyl grp num that is cached
TSK_DADDR_T grp_addr; ///< Address where cached cyl grp data was read from
FFS_GRPNUM_T groups_count; /* nr of descriptor group blocks */
unsigned int ffsbsize_f; /* num of frags in an FFS block */
unsigned int ffsbsize_b; /* size of an FFS block in bytes */
} FFS_INFO;
extern TSK_RETVAL_ENUM ffs_dir_open_meta(TSK_FS_INFO * a_fs,
TSK_FS_DIR ** a_fs_dir, TSK_INUM_T a_addr);
#ifdef __cplusplus
}
#endif
#endif /* _FFS_H */
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