1 0c98da8b 2005-07-13 devnull /*
  2 0c98da8b 2005-07-13 devnull  * An FFS file system is a sequence of cylinder groups.
  3 0c98da8b 2005-07-13 devnull  *
  4 0c98da8b 2005-07-13 devnull  * Each cylinder group is laid out as follows:
  5 0c98da8b 2005-07-13 devnull  *
  6 0c98da8b 2005-07-13 devnull  *	fs superblock (Fsblk)
  7 0c98da8b 2005-07-13 devnull  *	cylinder group block (Cgblk)
  8 0c98da8b 2005-07-13 devnull  *	inodes
  9 0c98da8b 2005-07-13 devnull  *	data
 10 0c98da8b 2005-07-13 devnull  *
 11 0c98da8b 2005-07-13 devnull  * The location of the fs superblock in the first cylinder
 12 0c98da8b 2005-07-13 devnull  * group is known.  The rest of the info about cylinder group
 13 0c98da8b 2005-07-13 devnull  * layout can be derived from the super block.
 14 0c98da8b 2005-07-13 devnull  */
 15 0c98da8b 2005-07-13 devnull 
 16 0c98da8b 2005-07-13 devnull #define daddr_t u32int
 17 0c98da8b 2005-07-13 devnull #define time_t u32int
 18 0c98da8b 2005-07-13 devnull 
 19 0c98da8b 2005-07-13 devnull typedef struct Cgblk Cgblk;
 20 0c98da8b 2005-07-13 devnull typedef struct Cylgrp Cylgrp;
 21 0c98da8b 2005-07-13 devnull typedef struct Cylsum Cylsum;
 22 e060bc52 2005-08-11 devnull typedef struct Cylsumtotal Cylsumtotal;
 23 0c98da8b 2005-07-13 devnull typedef struct Ffs Ffs;
 24 0c98da8b 2005-07-13 devnull typedef struct Fsblk Fsblk;
 25 e060bc52 2005-08-11 devnull typedef struct Inode1 Inode1;
 26 0c98da8b 2005-07-13 devnull typedef struct Inode Inode;
 27 0c98da8b 2005-07-13 devnull typedef struct Dirent Dirent;
 28 0c98da8b 2005-07-13 devnull 
 29 0c98da8b 2005-07-13 devnull enum
 30 0c98da8b 2005-07-13 devnull {
 31 0c98da8b 2005-07-13 devnull 	BYTESPERSEC = 512,
 32 0c98da8b 2005-07-13 devnull 
 33 0c98da8b 2005-07-13 devnull 	/* constants for Fsblk */
 34 0c98da8b 2005-07-13 devnull 	FSMAXMNTLEN = 512,
 35 e060bc52 2005-08-11 devnull 	FSMAXMNTLEN2 = 468,
 36 e060bc52 2005-08-11 devnull 	FSMAXVOLLEN = 32,				/* UFS2 */
 37 e060bc52 2005-08-11 devnull 	FSNOCSPTRSLEN = 128-12,
 38 e060bc52 2005-08-11 devnull 	FSNOCSPTRSLEN2 = 128-16,	/* UFS2 */
 39 0c98da8b 2005-07-13 devnull 	FSMAXSNAP = 20,
 40 0c98da8b 2005-07-13 devnull 	FSMAGIC = 0x011954,
 41 e060bc52 2005-08-11 devnull 	FSMAGIC2 = 0x19540119,
 42 0c98da8b 2005-07-13 devnull 	FSCHECKSUM = 0x7c269d38,
 43 fa325e9b 2020-01-10 cross 
 44 0c98da8b 2005-07-13 devnull 	/* Fsblk.inodefmt */
 45 0c98da8b 2005-07-13 devnull 	FS42INODEFMT = -1,
 46 0c98da8b 2005-07-13 devnull 	FS44INODEFMT = 2,
 47 0c98da8b 2005-07-13 devnull 
 48 0c98da8b 2005-07-13 devnull 	/* offset and size of first boot block */
 49 0c98da8b 2005-07-13 devnull 	BBOFF = 0,
 50 0c98da8b 2005-07-13 devnull 	BBSIZE = 8192,
 51 0c98da8b 2005-07-13 devnull 
 52 0c98da8b 2005-07-13 devnull 	/* offset and size of first super block */
 53 0c98da8b 2005-07-13 devnull 	SBOFF = BBOFF+BBSIZE,
 54 e060bc52 2005-08-11 devnull 	SBOFF2 = BBOFF+65536,			/* UFS2 */
 55 e060bc52 2005-08-11 devnull 	SBOFFPIGGY = BBOFF+262144,		/* UFS2 */
 56 0c98da8b 2005-07-13 devnull 	SBSIZE = 8192,
 57 0c98da8b 2005-07-13 devnull 
 58 0c98da8b 2005-07-13 devnull 	/* minimum block size */
 59 0c98da8b 2005-07-13 devnull 	MINBSIZE = 4096,
 60 0c98da8b 2005-07-13 devnull 
 61 0c98da8b 2005-07-13 devnull 	/* maximum fragments per block */
 62 0c98da8b 2005-07-13 devnull 	MAXFRAG = 8,
 63 0c98da8b 2005-07-13 devnull 
 64 0c98da8b 2005-07-13 devnull 	/* constants for Cgblk */
 65 0c98da8b 2005-07-13 devnull 	CGMAGIC = 0x090255,
 66 0c98da8b 2005-07-13 devnull 
 67 0c98da8b 2005-07-13 devnull 	/* inode-related */
 68 0c98da8b 2005-07-13 devnull 	ROOTINODE = 2,
 69 0c98da8b 2005-07-13 devnull 	WHITEOUT = 1,
 70 0c98da8b 2005-07-13 devnull 
 71 e060bc52 2005-08-11 devnull 	NXADDR = 2,	/* UFS2 */
 72 0c98da8b 2005-07-13 devnull 	NDADDR = 12,
 73 0c98da8b 2005-07-13 devnull 	NIADDR = 3,
 74 0c98da8b 2005-07-13 devnull 
 75 079f5e94 2020-05-19 rsc 	/* some systems have these defined */
 76 079f5e94 2020-05-19 rsc 	#undef IEXEC
 77 079f5e94 2020-05-19 rsc 	#undef IWRITE
 78 079f5e94 2020-05-19 rsc 	#undef IREAD
 79 079f5e94 2020-05-19 rsc 	#undef ISVTX
 80 079f5e94 2020-05-19 rsc 	#undef ISGID
 81 079f5e94 2020-05-19 rsc 	#undef ISUID
 82 079f5e94 2020-05-19 rsc 	#undef IFMT
 83 079f5e94 2020-05-19 rsc 	#undef IFIFO
 84 079f5e94 2020-05-19 rsc 	#undef IFCHR
 85 079f5e94 2020-05-19 rsc 	#undef IFDIR
 86 079f5e94 2020-05-19 rsc 	#undef IFBLK
 87 079f5e94 2020-05-19 rsc 	#undef IFREG
 88 079f5e94 2020-05-19 rsc 	#undef IFLNK
 89 079f5e94 2020-05-19 rsc 	#undef IFSOCK
 90 079f5e94 2020-05-19 rsc 	#undef IFWHT
 91 079f5e94 2020-05-19 rsc 
 92 079f5e94 2020-05-19 rsc 	#define IEXEC	FFS_IEXEC
 93 079f5e94 2020-05-19 rsc 	#define IWRITE	FFS_IWRITE
 94 079f5e94 2020-05-19 rsc 	#define IREAD	FFS_IREAD
 95 079f5e94 2020-05-19 rsc 	#define ISVTX	FFS_ISVTX
 96 079f5e94 2020-05-19 rsc 	#define ISGID	FFS_ISGID
 97 079f5e94 2020-05-19 rsc 	#define ISUID	FFS_ISUID
 98 079f5e94 2020-05-19 rsc 	#define IFMT	FFS_IFMT
 99 079f5e94 2020-05-19 rsc 	#define IFIFO	FFS_IFIFO
100 079f5e94 2020-05-19 rsc 	#define IFCHR	FFS_IFCHR
101 079f5e94 2020-05-19 rsc 	#define IFDIR	FFS_IFDIR
102 079f5e94 2020-05-19 rsc 	#define IFBLK	FFS_IFBLK
103 079f5e94 2020-05-19 rsc 	#define IFREG	FFS_IFREG
104 079f5e94 2020-05-19 rsc 	#define IFLNK	FFS_IFLNK
105 079f5e94 2020-05-19 rsc 	#define IFSOCK	FFS_IFSOCK
106 079f5e94 2020-05-19 rsc 	#define IFWHT	FFS_IFWHT
107 079f5e94 2020-05-19 rsc 
108 0c98da8b 2005-07-13 devnull 	/* permissions in Inode.mode */
109 0c98da8b 2005-07-13 devnull 	IEXEC = 00100,
110 0c98da8b 2005-07-13 devnull 	IWRITE = 0200,
111 0c98da8b 2005-07-13 devnull 	IREAD = 0400,
112 0c98da8b 2005-07-13 devnull 	ISVTX = 01000,
113 0c98da8b 2005-07-13 devnull 	ISGID = 02000,
114 0c98da8b 2005-07-13 devnull 	ISUID = 04000,
115 0c98da8b 2005-07-13 devnull 
116 0c98da8b 2005-07-13 devnull 	/* type in Inode.mode */
117 0c98da8b 2005-07-13 devnull 	IFMT = 0170000,
118 0c98da8b 2005-07-13 devnull 	IFIFO = 0010000,
119 0c98da8b 2005-07-13 devnull 	IFCHR = 0020000,
120 0c98da8b 2005-07-13 devnull 	IFDIR = 0040000,
121 0c98da8b 2005-07-13 devnull 	IFBLK = 0060000,
122 0c98da8b 2005-07-13 devnull 	IFREG = 0100000,
123 0c98da8b 2005-07-13 devnull 	IFLNK = 0120000,
124 0c98da8b 2005-07-13 devnull 	IFSOCK = 0140000,
125 0c98da8b 2005-07-13 devnull 	IFWHT = 0160000,
126 0c98da8b 2005-07-13 devnull 
127 0c98da8b 2005-07-13 devnull 	/* type in Dirent.type */
128 0c98da8b 2005-07-13 devnull 	DTUNKNOWN = 0,
129 0c98da8b 2005-07-13 devnull 	DTFIFO = 1,
130 0c98da8b 2005-07-13 devnull 	DTCHR = 2,
131 0c98da8b 2005-07-13 devnull 	DTDIR = 4,
132 0c98da8b 2005-07-13 devnull 	DTBLK = 6,
133 0c98da8b 2005-07-13 devnull 	DTREG = 8,
134 0c98da8b 2005-07-13 devnull 	DTLNK = 10,
135 0c98da8b 2005-07-13 devnull 	DTSOCK = 12,
136 cbeb0b26 2006-04-01 devnull 	DTWHT = 14
137 0c98da8b 2005-07-13 devnull };
138 0c98da8b 2005-07-13 devnull 
139 0c98da8b 2005-07-13 devnull struct Cylsum
140 0c98da8b 2005-07-13 devnull {
141 0c98da8b 2005-07-13 devnull 	u32int	ndir;
142 0c98da8b 2005-07-13 devnull 	u32int	nbfree;
143 0c98da8b 2005-07-13 devnull 	u32int	nifree;
144 0c98da8b 2005-07-13 devnull 	u32int	nffree;
145 0c98da8b 2005-07-13 devnull };
146 0c98da8b 2005-07-13 devnull 
147 e060bc52 2005-08-11 devnull struct Cylsumtotal
148 e060bc52 2005-08-11 devnull {
149 e060bc52 2005-08-11 devnull 	u64int	ndir;
150 e060bc52 2005-08-11 devnull 	u64int	nbfree;
151 e060bc52 2005-08-11 devnull 	u64int	nifree;
152 e060bc52 2005-08-11 devnull 	u64int	nffree;
153 e060bc52 2005-08-11 devnull 	u64int	numclusters;
154 e060bc52 2005-08-11 devnull 	u64int	unused[3];
155 e060bc52 2005-08-11 devnull };
156 e060bc52 2005-08-11 devnull 
157 e060bc52 2005-08-11 devnull /* Fields beginning with underscore are deprecated in UFS2 */
158 0c98da8b 2005-07-13 devnull struct Fsblk
159 0c98da8b 2005-07-13 devnull {
160 0c98da8b 2005-07-13 devnull 	u32int	unused0;
161 0c98da8b 2005-07-13 devnull 	u32int	unused1;
162 0c98da8b 2005-07-13 devnull 	daddr_t	sfragno;		/* fragment address of super block in file system */
163 0c98da8b 2005-07-13 devnull 	daddr_t	cfragno;		/* fragment address if cylinder block in file system */
164 0c98da8b 2005-07-13 devnull 	daddr_t	ifragno;		/* fragment offset of inode blocks in file system */
165 0c98da8b 2005-07-13 devnull 	daddr_t	dfragno;		/* fragment offset of data blocks in cg */
166 e060bc52 2005-08-11 devnull 	u32int	_cgoffset;		/* block (maybe fragment?) offset of Cgblk in cylinder */
167 e060bc52 2005-08-11 devnull 	u32int	_cgmask;
168 e060bc52 2005-08-11 devnull 	time_t	_time;
169 e060bc52 2005-08-11 devnull 	u32int	_nfrag;			/* number of blocks in fs * fragsperblock */
170 e060bc52 2005-08-11 devnull 	u32int	_ndfrag;
171 0c98da8b 2005-07-13 devnull 	u32int	ncg;			/* number of cylinder groups in fs */
172 0c98da8b 2005-07-13 devnull 	u32int	blocksize;		/* block size in fs */
173 0c98da8b 2005-07-13 devnull 	u32int	fragsize;		/* frag size in fs */
174 0c98da8b 2005-07-13 devnull 	u32int	fragsperblock;	/* fragments per block: blocksize / fragsize */
175 0c98da8b 2005-07-13 devnull 	u32int	minfree;		/* ignored by us */
176 0c98da8b 2005-07-13 devnull 	u32int	rotdelay;		/* ... */
177 0c98da8b 2005-07-13 devnull 	u32int	rps;
178 0c98da8b 2005-07-13 devnull 	u32int	bmask;
179 0c98da8b 2005-07-13 devnull 	u32int	fmask;
180 0c98da8b 2005-07-13 devnull 	u32int	bshift;
181 0c98da8b 2005-07-13 devnull 	u32int	fshift;
182 0c98da8b 2005-07-13 devnull 	u32int	maxcontig;
183 0c98da8b 2005-07-13 devnull 	u32int	maxbpg;
184 0c98da8b 2005-07-13 devnull 	u32int	fragshift;
185 0c98da8b 2005-07-13 devnull 	u32int	fsbtodbshift;
186 e060bc52 2005-08-11 devnull 	u32int	sbsize;			/* size of super block */
187 0c98da8b 2005-07-13 devnull 	u32int	unused2;		/* more stuff we don't use ... */
188 0c98da8b 2005-07-13 devnull 	u32int	unused3;
189 0c98da8b 2005-07-13 devnull 	u32int	nindir;
190 0c98da8b 2005-07-13 devnull 	u32int	inosperblock;	/* inodes per block */
191 e060bc52 2005-08-11 devnull 	u32int	_nspf;
192 0c98da8b 2005-07-13 devnull 	u32int	optim;
193 e060bc52 2005-08-11 devnull 	u32int	_npsect;
194 e060bc52 2005-08-11 devnull 	u32int	_interleave;
195 e060bc52 2005-08-11 devnull 	u32int	_trackskew;
196 0c98da8b 2005-07-13 devnull 	u32int	id[2];
197 e060bc52 2005-08-11 devnull 	daddr_t	_csaddr;		/* blk addr of cyl grp summary area */
198 e060bc52 2005-08-11 devnull 	u32int	cssize;			/* size of cyl grp summary area */
199 e060bc52 2005-08-11 devnull 	u32int	cgsize;			/* cylinder group size */
200 e060bc52 2005-08-11 devnull 	u32int	_trackspercyl;	/* tracks per cylinder */
201 e060bc52 2005-08-11 devnull 	u32int	_secspertrack;	/* sectors per track */
202 e060bc52 2005-08-11 devnull 	u32int	_secspercyl;	/* sectors per cylinder */
203 e060bc52 2005-08-11 devnull 	u32int	_ncyl;			/* cylinders in fs */
204 e060bc52 2005-08-11 devnull 	u32int	_cylspergroup;	/* cylinders per group */
205 0c98da8b 2005-07-13 devnull 	u32int	inospergroup;	/* inodes per group */
206 0c98da8b 2005-07-13 devnull 	u32int	fragspergroup;	/* data blocks per group * fragperblock */
207 e060bc52 2005-08-11 devnull 	Cylsum	_cstotal;		/* more unused... */
208 0c98da8b 2005-07-13 devnull 	u8int	fmod;
209 0c98da8b 2005-07-13 devnull 	u8int	clean;
210 0c98da8b 2005-07-13 devnull 	u8int	ronly;
211 e060bc52 2005-08-11 devnull 	u8int	_flags;
212 e060bc52 2005-08-11 devnull 	/* char fsmnt[512]; in UFS1 */
213 e060bc52 2005-08-11 devnull 		char	fsmnt[FSMAXMNTLEN2];
214 e060bc52 2005-08-11 devnull 		char	volname[FSMAXVOLLEN];
215 e060bc52 2005-08-11 devnull 		u64int	swuid;
216 e060bc52 2005-08-11 devnull 		u32int	pad;
217 0c98da8b 2005-07-13 devnull 	u32int	cgrotor;
218 e060bc52 2005-08-11 devnull 	uchar	ocsp[FSNOCSPTRSLEN]; /* last 4 bytes is contigdirs in UFS2 */
219 e060bc52 2005-08-11 devnull 	u32int	contigdirs;		/* csp in UFS2 */
220 e060bc52 2005-08-11 devnull 	u32int	csp;			/* maxcluster in UFS2 */
221 e060bc52 2005-08-11 devnull 	u32int	maxcluster;		/* active in UFS2 */
222 e060bc52 2005-08-11 devnull 	u32int	_cpc;
223 e060bc52 2005-08-11 devnull 	/* u16int	opostbl[16][8]; in UFS1 */
224 e060bc52 2005-08-11 devnull 		u32int	maxbsize;
225 e060bc52 2005-08-11 devnull 		u64int	spare64[17];
226 e060bc52 2005-08-11 devnull 		u64int	sblockloc;
227 e060bc52 2005-08-11 devnull 		Cylsumtotal	cstotal;
228 e060bc52 2005-08-11 devnull 		u64int	time;
229 e060bc52 2005-08-11 devnull 		u64int	nfrag;
230 e060bc52 2005-08-11 devnull 		u64int	ndfrag;
231 e060bc52 2005-08-11 devnull 		u64int	csaddr;
232 e060bc52 2005-08-11 devnull 		u64int	pendingblocks;
233 e060bc52 2005-08-11 devnull 		u32int	pendinginodes;
234 0c98da8b 2005-07-13 devnull 	u32int	snapinum[FSMAXSNAP];
235 0c98da8b 2005-07-13 devnull 	u32int	avgfilesize;
236 0c98da8b 2005-07-13 devnull 	u32int	avgfpdir;
237 e060bc52 2005-08-11 devnull 	/* u32int sparecon[26], pendingblocks, pendinginodes; in UFS1 */
238 e060bc52 2005-08-11 devnull 		u32int	savecgsize;
239 e060bc52 2005-08-11 devnull 		u32int	sparecon[26];
240 e060bc52 2005-08-11 devnull 		u32int	flags;
241 0c98da8b 2005-07-13 devnull 	u32int	contigsumsize;
242 0c98da8b 2005-07-13 devnull 	u32int	maxsymlinklen;
243 e060bc52 2005-08-11 devnull 	u32int	_inodefmt;		/* format of on-disk inodes */
244 0c98da8b 2005-07-13 devnull 	u64int	maxfilesize;	/* maximum representable file size */
245 0c98da8b 2005-07-13 devnull 	u64int	qbmask;
246 0c98da8b 2005-07-13 devnull 	u64int	qfmask;
247 0c98da8b 2005-07-13 devnull 	u32int	state;
248 e060bc52 2005-08-11 devnull 	u32int	_postblformat;
249 e060bc52 2005-08-11 devnull 	u32int	_nrpos;
250 e060bc52 2005-08-11 devnull 	u32int	_postbloff;
251 e060bc52 2005-08-11 devnull 	u32int	_rotbloff;
252 e060bc52 2005-08-11 devnull 	u32int	magic;			/* FSMAGIC or FSMAGIC2 */
253 0c98da8b 2005-07-13 devnull };
254 0c98da8b 2005-07-13 devnull 
255 0c98da8b 2005-07-13 devnull /*
256 0c98da8b 2005-07-13 devnull  * Cylinder group block for a file system.
257 0c98da8b 2005-07-13 devnull  */
258 0c98da8b 2005-07-13 devnull struct Cgblk
259 0c98da8b 2005-07-13 devnull {
260 0c98da8b 2005-07-13 devnull 	u32int	unused0;
261 e060bc52 2005-08-11 devnull 	u32int	magic;			/* CGMAGIC */
262 0c98da8b 2005-07-13 devnull 	u32int	time;			/* time last written */
263 e060bc52 2005-08-11 devnull 	u32int	num;			/* we are cg #cgnum */
264 0c98da8b 2005-07-13 devnull 	u16int	ncyl;			/* number of cylinders in gp */
265 e060bc52 2005-08-11 devnull 	u16int	nino;			/* number of inodes */
266 e060bc52 2005-08-11 devnull 	u32int	nfrag;			/* number of fragments  */
267 0c98da8b 2005-07-13 devnull 	Cylsum	csum;
268 0c98da8b 2005-07-13 devnull 	u32int	rotor;
269 0c98da8b 2005-07-13 devnull 	u32int	frotor;
270 0c98da8b 2005-07-13 devnull 	u32int	irotor;
271 0c98da8b 2005-07-13 devnull 	u32int	frsum[MAXFRAG];	/* counts of available frags */
272 0c98da8b 2005-07-13 devnull 	u32int	btotoff;
273 0c98da8b 2005-07-13 devnull 	u32int	boff;
274 0c98da8b 2005-07-13 devnull 	u32int	imapoff;		/* offset to used inode map */
275 0c98da8b 2005-07-13 devnull 	u32int	fmapoff;		/* offset to free fragment map */
276 0c98da8b 2005-07-13 devnull 	u32int	nextfrag;		/* next free fragment */
277 0c98da8b 2005-07-13 devnull 	u32int	csumoff;
278 0c98da8b 2005-07-13 devnull 	u32int	clusteroff;
279 0c98da8b 2005-07-13 devnull 	u32int	ncluster;
280 0c98da8b 2005-07-13 devnull 	u32int	sparecon[13];
281 0c98da8b 2005-07-13 devnull };
282 0c98da8b 2005-07-13 devnull 
283 0c98da8b 2005-07-13 devnull struct Cylgrp
284 0c98da8b 2005-07-13 devnull {
285 0c98da8b 2005-07-13 devnull 	/* these are block numbers not fragment numbers */
286 e060bc52 2005-08-11 devnull 	u64int	bno;			/* disk block address of start of cg */
287 e060bc52 2005-08-11 devnull 	u64int	ibno;			/* disk block address of first inode */
288 e060bc52 2005-08-11 devnull 	u64int	dbno;			/* disk block address of first data */
289 e060bc52 2005-08-11 devnull 	u64int	cgblkno;
290 0c98da8b 2005-07-13 devnull };
291 0c98da8b 2005-07-13 devnull 
292 0c98da8b 2005-07-13 devnull /*
293 0c98da8b 2005-07-13 devnull  * this is the on-disk structure
294 0c98da8b 2005-07-13 devnull  */
295 e060bc52 2005-08-11 devnull struct Inode1
296 0c98da8b 2005-07-13 devnull {
297 0c98da8b 2005-07-13 devnull 	u16int	mode;
298 0c98da8b 2005-07-13 devnull 	u16int	nlink;
299 0c98da8b 2005-07-13 devnull 	u32int	unused;
300 0c98da8b 2005-07-13 devnull 	u64int	size;
301 0c98da8b 2005-07-13 devnull 	u32int	atime;
302 0c98da8b 2005-07-13 devnull 	u32int	atimensec;
303 0c98da8b 2005-07-13 devnull 	u32int	mtime;
304 0c98da8b 2005-07-13 devnull 	u32int	mtimensec;
305 0c98da8b 2005-07-13 devnull 	u32int	ctime;
306 0c98da8b 2005-07-13 devnull 	u32int	ctimensec;
307 0c98da8b 2005-07-13 devnull 	/* rdev is db[0] */
308 0c98da8b 2005-07-13 devnull 	u32int	db[NDADDR];
309 0c98da8b 2005-07-13 devnull 	u32int	ib[NIADDR];
310 0c98da8b 2005-07-13 devnull 	u32int	flags;
311 0c98da8b 2005-07-13 devnull 	u32int	nblock;
312 0c98da8b 2005-07-13 devnull 	u32int	gen;
313 0c98da8b 2005-07-13 devnull 	u32int	uid;
314 0c98da8b 2005-07-13 devnull 	u32int	gid;
315 0c98da8b 2005-07-13 devnull 	u32int	spare[2];
316 0c98da8b 2005-07-13 devnull };
317 0c98da8b 2005-07-13 devnull 
318 e060bc52 2005-08-11 devnull struct Inode
319 e060bc52 2005-08-11 devnull {
320 e060bc52 2005-08-11 devnull 	u16int	mode;
321 e060bc52 2005-08-11 devnull 	u16int	nlink;
322 e060bc52 2005-08-11 devnull 	u32int	uid;
323 e060bc52 2005-08-11 devnull 	u32int	gid;
324 e060bc52 2005-08-11 devnull 	u32int	blksize;
325 e060bc52 2005-08-11 devnull 	u64int	size;
326 e060bc52 2005-08-11 devnull 	u64int	nblock;
327 e060bc52 2005-08-11 devnull 	u64int	atime;
328 e060bc52 2005-08-11 devnull 	u64int	mtime;
329 e060bc52 2005-08-11 devnull 	u64int	ctime;
330 e060bc52 2005-08-11 devnull 	u64int	btime;
331 e060bc52 2005-08-11 devnull 	u32int	atimensec;
332 e060bc52 2005-08-11 devnull 	u32int	mtimensec;
333 e060bc52 2005-08-11 devnull 	u32int	ctimensec;
334 e060bc52 2005-08-11 devnull 	u32int	btimensec;
335 e060bc52 2005-08-11 devnull 	u32int	gen;
336 e060bc52 2005-08-11 devnull 	u32int	kernflags;
337 e060bc52 2005-08-11 devnull 	u32int	flags;
338 e060bc52 2005-08-11 devnull 	u32int	extsize;
339 e060bc52 2005-08-11 devnull 	u64int	ext[NXADDR];
340 e060bc52 2005-08-11 devnull 	u64int	db[NDADDR];
341 e060bc52 2005-08-11 devnull 	u64int	ib[NIADDR];
342 e060bc52 2005-08-11 devnull 	u64int	spare[3];
343 e060bc52 2005-08-11 devnull };
344 e060bc52 2005-08-11 devnull 
345 0c98da8b 2005-07-13 devnull struct Dirent
346 0c98da8b 2005-07-13 devnull {
347 0c98da8b 2005-07-13 devnull 	u32int	ino;
348 0c98da8b 2005-07-13 devnull 	u16int	reclen;
349 0c98da8b 2005-07-13 devnull 	u8int	type;
350 0c98da8b 2005-07-13 devnull 	u8int	namlen;
351 0c98da8b 2005-07-13 devnull 	char		name[1];
352 0c98da8b 2005-07-13 devnull };
353 0c98da8b 2005-07-13 devnull 
354 0c98da8b 2005-07-13 devnull /*
355 0c98da8b 2005-07-13 devnull  * main file system structure
356 0c98da8b 2005-07-13 devnull  */
357 0c98da8b 2005-07-13 devnull struct Ffs
358 0c98da8b 2005-07-13 devnull {
359 e060bc52 2005-08-11 devnull 	int		ufs;
360 0c98da8b 2005-07-13 devnull 	int		blocksize;
361 e060bc52 2005-08-11 devnull 	u64int	nblock;
362 0c98da8b 2005-07-13 devnull 	int		fragsize;
363 0c98da8b 2005-07-13 devnull 	int		fragsperblock;
364 0c98da8b 2005-07-13 devnull 	int		inosperblock;
365 e060bc52 2005-08-11 devnull 	u64int	blockspergroup;
366 e060bc52 2005-08-11 devnull 	u64int	fragspergroup;
367 0c98da8b 2005-07-13 devnull 	int		inospergroup;
368 0c98da8b 2005-07-13 devnull 
369 e060bc52 2005-08-11 devnull 	u64int	nfrag;
370 e060bc52 2005-08-11 devnull 	u64int	ndfrag;
371 0c98da8b 2005-07-13 devnull 
372 0c98da8b 2005-07-13 devnull 	int		ncg;
373 0c98da8b 2005-07-13 devnull 	Cylgrp	*cg;
374 0c98da8b 2005-07-13 devnull 
375 0c98da8b 2005-07-13 devnull 	Disk		*disk;
376 0c98da8b 2005-07-13 devnull };