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 0c98da8b 2005-07-13 devnull 	
 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 0c98da8b 2005-07-13 devnull 	/* permissions in Inode.mode */
 76 0c98da8b 2005-07-13 devnull 	IEXEC = 00100,
 77 0c98da8b 2005-07-13 devnull 	IWRITE = 0200,
 78 0c98da8b 2005-07-13 devnull 	IREAD = 0400,
 79 0c98da8b 2005-07-13 devnull 	ISVTX = 01000,
 80 0c98da8b 2005-07-13 devnull 	ISGID = 02000,
 81 0c98da8b 2005-07-13 devnull 	ISUID = 04000,
 82 0c98da8b 2005-07-13 devnull 
 83 0c98da8b 2005-07-13 devnull 	/* type in Inode.mode */
 84 0c98da8b 2005-07-13 devnull 	IFMT = 0170000,
 85 0c98da8b 2005-07-13 devnull 	IFIFO = 0010000,
 86 0c98da8b 2005-07-13 devnull 	IFCHR = 0020000,
 87 0c98da8b 2005-07-13 devnull 	IFDIR = 0040000,
 88 0c98da8b 2005-07-13 devnull 	IFBLK = 0060000,
 89 0c98da8b 2005-07-13 devnull 	IFREG = 0100000,
 90 0c98da8b 2005-07-13 devnull 	IFLNK = 0120000,
 91 0c98da8b 2005-07-13 devnull 	IFSOCK = 0140000,
 92 0c98da8b 2005-07-13 devnull 	IFWHT = 0160000,
 93 0c98da8b 2005-07-13 devnull 
 94 0c98da8b 2005-07-13 devnull 	/* type in Dirent.type */
 95 0c98da8b 2005-07-13 devnull 	DTUNKNOWN = 0,
 96 0c98da8b 2005-07-13 devnull 	DTFIFO = 1,
 97 0c98da8b 2005-07-13 devnull 	DTCHR = 2,
 98 0c98da8b 2005-07-13 devnull 	DTDIR = 4,
 99 0c98da8b 2005-07-13 devnull 	DTBLK = 6,
100 0c98da8b 2005-07-13 devnull 	DTREG = 8,
101 0c98da8b 2005-07-13 devnull 	DTLNK = 10,
102 0c98da8b 2005-07-13 devnull 	DTSOCK = 12,
103 cbeb0b26 2006-04-01 devnull 	DTWHT = 14
104 0c98da8b 2005-07-13 devnull };
105 0c98da8b 2005-07-13 devnull 
106 0c98da8b 2005-07-13 devnull struct Cylsum
107 0c98da8b 2005-07-13 devnull {
108 0c98da8b 2005-07-13 devnull 	u32int	ndir;
109 0c98da8b 2005-07-13 devnull 	u32int	nbfree;
110 0c98da8b 2005-07-13 devnull 	u32int	nifree;
111 0c98da8b 2005-07-13 devnull 	u32int	nffree;
112 0c98da8b 2005-07-13 devnull };
113 0c98da8b 2005-07-13 devnull 
114 e060bc52 2005-08-11 devnull struct Cylsumtotal
115 e060bc52 2005-08-11 devnull {
116 e060bc52 2005-08-11 devnull 	u64int	ndir;
117 e060bc52 2005-08-11 devnull 	u64int	nbfree;
118 e060bc52 2005-08-11 devnull 	u64int	nifree;
119 e060bc52 2005-08-11 devnull 	u64int	nffree;
120 e060bc52 2005-08-11 devnull 	u64int	numclusters;
121 e060bc52 2005-08-11 devnull 	u64int	unused[3];
122 e060bc52 2005-08-11 devnull };
123 e060bc52 2005-08-11 devnull 
124 e060bc52 2005-08-11 devnull /* Fields beginning with underscore are deprecated in UFS2 */
125 0c98da8b 2005-07-13 devnull struct Fsblk
126 0c98da8b 2005-07-13 devnull {
127 0c98da8b 2005-07-13 devnull 	u32int	unused0;
128 0c98da8b 2005-07-13 devnull 	u32int	unused1;
129 0c98da8b 2005-07-13 devnull 	daddr_t	sfragno;		/* fragment address of super block in file system */
130 0c98da8b 2005-07-13 devnull 	daddr_t	cfragno;		/* fragment address if cylinder block in file system */
131 0c98da8b 2005-07-13 devnull 	daddr_t	ifragno;		/* fragment offset of inode blocks in file system */
132 0c98da8b 2005-07-13 devnull 	daddr_t	dfragno;		/* fragment offset of data blocks in cg */
133 e060bc52 2005-08-11 devnull 	u32int	_cgoffset;		/* block (maybe fragment?) offset of Cgblk in cylinder */
134 e060bc52 2005-08-11 devnull 	u32int	_cgmask;
135 e060bc52 2005-08-11 devnull 	time_t	_time;
136 e060bc52 2005-08-11 devnull 	u32int	_nfrag;			/* number of blocks in fs * fragsperblock */
137 e060bc52 2005-08-11 devnull 	u32int	_ndfrag;
138 0c98da8b 2005-07-13 devnull 	u32int	ncg;			/* number of cylinder groups in fs */
139 0c98da8b 2005-07-13 devnull 	u32int	blocksize;		/* block size in fs */
140 0c98da8b 2005-07-13 devnull 	u32int	fragsize;		/* frag size in fs */
141 0c98da8b 2005-07-13 devnull 	u32int	fragsperblock;	/* fragments per block: blocksize / fragsize */
142 0c98da8b 2005-07-13 devnull 	u32int	minfree;		/* ignored by us */
143 0c98da8b 2005-07-13 devnull 	u32int	rotdelay;		/* ... */
144 0c98da8b 2005-07-13 devnull 	u32int	rps;
145 0c98da8b 2005-07-13 devnull 	u32int	bmask;
146 0c98da8b 2005-07-13 devnull 	u32int	fmask;
147 0c98da8b 2005-07-13 devnull 	u32int	bshift;
148 0c98da8b 2005-07-13 devnull 	u32int	fshift;
149 0c98da8b 2005-07-13 devnull 	u32int	maxcontig;
150 0c98da8b 2005-07-13 devnull 	u32int	maxbpg;
151 0c98da8b 2005-07-13 devnull 	u32int	fragshift;
152 0c98da8b 2005-07-13 devnull 	u32int	fsbtodbshift;
153 e060bc52 2005-08-11 devnull 	u32int	sbsize;			/* size of super block */
154 0c98da8b 2005-07-13 devnull 	u32int	unused2;		/* more stuff we don't use ... */
155 0c98da8b 2005-07-13 devnull 	u32int	unused3;
156 0c98da8b 2005-07-13 devnull 	u32int	nindir;
157 0c98da8b 2005-07-13 devnull 	u32int	inosperblock;	/* inodes per block */
158 e060bc52 2005-08-11 devnull 	u32int	_nspf;
159 0c98da8b 2005-07-13 devnull 	u32int	optim;
160 e060bc52 2005-08-11 devnull 	u32int	_npsect;
161 e060bc52 2005-08-11 devnull 	u32int	_interleave;
162 e060bc52 2005-08-11 devnull 	u32int	_trackskew;
163 0c98da8b 2005-07-13 devnull 	u32int	id[2];
164 e060bc52 2005-08-11 devnull 	daddr_t	_csaddr;		/* blk addr of cyl grp summary area */
165 e060bc52 2005-08-11 devnull 	u32int	cssize;			/* size of cyl grp summary area */
166 e060bc52 2005-08-11 devnull 	u32int	cgsize;			/* cylinder group size */
167 e060bc52 2005-08-11 devnull 	u32int	_trackspercyl;	/* tracks per cylinder */
168 e060bc52 2005-08-11 devnull 	u32int	_secspertrack;	/* sectors per track */
169 e060bc52 2005-08-11 devnull 	u32int	_secspercyl;	/* sectors per cylinder */
170 e060bc52 2005-08-11 devnull 	u32int	_ncyl;			/* cylinders in fs */
171 e060bc52 2005-08-11 devnull 	u32int	_cylspergroup;	/* cylinders per group */
172 0c98da8b 2005-07-13 devnull 	u32int	inospergroup;	/* inodes per group */
173 0c98da8b 2005-07-13 devnull 	u32int	fragspergroup;	/* data blocks per group * fragperblock */
174 e060bc52 2005-08-11 devnull 	Cylsum	_cstotal;		/* more unused... */
175 0c98da8b 2005-07-13 devnull 	u8int	fmod;
176 0c98da8b 2005-07-13 devnull 	u8int	clean;
177 0c98da8b 2005-07-13 devnull 	u8int	ronly;
178 e060bc52 2005-08-11 devnull 	u8int	_flags;
179 e060bc52 2005-08-11 devnull 	/* char fsmnt[512]; in UFS1 */
180 e060bc52 2005-08-11 devnull 		char	fsmnt[FSMAXMNTLEN2];
181 e060bc52 2005-08-11 devnull 		char	volname[FSMAXVOLLEN];
182 e060bc52 2005-08-11 devnull 		u64int	swuid;
183 e060bc52 2005-08-11 devnull 		u32int	pad;
184 0c98da8b 2005-07-13 devnull 	u32int	cgrotor;
185 e060bc52 2005-08-11 devnull 	uchar	ocsp[FSNOCSPTRSLEN]; /* last 4 bytes is contigdirs in UFS2 */
186 e060bc52 2005-08-11 devnull 	u32int	contigdirs;		/* csp in UFS2 */
187 e060bc52 2005-08-11 devnull 	u32int	csp;			/* maxcluster in UFS2 */
188 e060bc52 2005-08-11 devnull 	u32int	maxcluster;		/* active in UFS2 */
189 e060bc52 2005-08-11 devnull 	u32int	_cpc;
190 e060bc52 2005-08-11 devnull 	/* u16int	opostbl[16][8]; in UFS1 */
191 e060bc52 2005-08-11 devnull 		u32int	maxbsize;
192 e060bc52 2005-08-11 devnull 		u64int	spare64[17];
193 e060bc52 2005-08-11 devnull 		u64int	sblockloc;
194 e060bc52 2005-08-11 devnull 		Cylsumtotal	cstotal;
195 e060bc52 2005-08-11 devnull 		u64int	time;
196 e060bc52 2005-08-11 devnull 		u64int	nfrag;
197 e060bc52 2005-08-11 devnull 		u64int	ndfrag;
198 e060bc52 2005-08-11 devnull 		u64int	csaddr;
199 e060bc52 2005-08-11 devnull 		u64int	pendingblocks;
200 e060bc52 2005-08-11 devnull 		u32int	pendinginodes;
201 0c98da8b 2005-07-13 devnull 	u32int	snapinum[FSMAXSNAP];
202 0c98da8b 2005-07-13 devnull 	u32int	avgfilesize;
203 0c98da8b 2005-07-13 devnull 	u32int	avgfpdir;
204 e060bc52 2005-08-11 devnull 	/* u32int sparecon[26], pendingblocks, pendinginodes; in UFS1 */
205 e060bc52 2005-08-11 devnull 		u32int	savecgsize;
206 e060bc52 2005-08-11 devnull 		u32int	sparecon[26];
207 e060bc52 2005-08-11 devnull 		u32int	flags;
208 0c98da8b 2005-07-13 devnull 	u32int	contigsumsize;
209 0c98da8b 2005-07-13 devnull 	u32int	maxsymlinklen;
210 e060bc52 2005-08-11 devnull 	u32int	_inodefmt;		/* format of on-disk inodes */
211 0c98da8b 2005-07-13 devnull 	u64int	maxfilesize;	/* maximum representable file size */
212 0c98da8b 2005-07-13 devnull 	u64int	qbmask;
213 0c98da8b 2005-07-13 devnull 	u64int	qfmask;
214 0c98da8b 2005-07-13 devnull 	u32int	state;
215 e060bc52 2005-08-11 devnull 	u32int	_postblformat;
216 e060bc52 2005-08-11 devnull 	u32int	_nrpos;
217 e060bc52 2005-08-11 devnull 	u32int	_postbloff;
218 e060bc52 2005-08-11 devnull 	u32int	_rotbloff;
219 e060bc52 2005-08-11 devnull 	u32int	magic;			/* FSMAGIC or FSMAGIC2 */
220 0c98da8b 2005-07-13 devnull };
221 0c98da8b 2005-07-13 devnull 
222 0c98da8b 2005-07-13 devnull /*
223 0c98da8b 2005-07-13 devnull  * Cylinder group block for a file system.
224 0c98da8b 2005-07-13 devnull  */
225 0c98da8b 2005-07-13 devnull struct Cgblk
226 0c98da8b 2005-07-13 devnull {
227 0c98da8b 2005-07-13 devnull 	u32int	unused0;
228 e060bc52 2005-08-11 devnull 	u32int	magic;			/* CGMAGIC */
229 0c98da8b 2005-07-13 devnull 	u32int	time;			/* time last written */
230 e060bc52 2005-08-11 devnull 	u32int	num;			/* we are cg #cgnum */
231 0c98da8b 2005-07-13 devnull 	u16int	ncyl;			/* number of cylinders in gp */
232 e060bc52 2005-08-11 devnull 	u16int	nino;			/* number of inodes */
233 e060bc52 2005-08-11 devnull 	u32int	nfrag;			/* number of fragments  */
234 0c98da8b 2005-07-13 devnull 	Cylsum	csum;
235 0c98da8b 2005-07-13 devnull 	u32int	rotor;
236 0c98da8b 2005-07-13 devnull 	u32int	frotor;
237 0c98da8b 2005-07-13 devnull 	u32int	irotor;
238 0c98da8b 2005-07-13 devnull 	u32int	frsum[MAXFRAG];	/* counts of available frags */
239 0c98da8b 2005-07-13 devnull 	u32int	btotoff;
240 0c98da8b 2005-07-13 devnull 	u32int	boff;
241 0c98da8b 2005-07-13 devnull 	u32int	imapoff;		/* offset to used inode map */
242 0c98da8b 2005-07-13 devnull 	u32int	fmapoff;		/* offset to free fragment map */
243 0c98da8b 2005-07-13 devnull 	u32int	nextfrag;		/* next free fragment */
244 0c98da8b 2005-07-13 devnull 	u32int	csumoff;
245 0c98da8b 2005-07-13 devnull 	u32int	clusteroff;
246 0c98da8b 2005-07-13 devnull 	u32int	ncluster;
247 0c98da8b 2005-07-13 devnull 	u32int	sparecon[13];
248 0c98da8b 2005-07-13 devnull };
249 0c98da8b 2005-07-13 devnull 
250 0c98da8b 2005-07-13 devnull struct Cylgrp
251 0c98da8b 2005-07-13 devnull {
252 0c98da8b 2005-07-13 devnull 	/* these are block numbers not fragment numbers */
253 e060bc52 2005-08-11 devnull 	u64int	bno;			/* disk block address of start of cg */
254 e060bc52 2005-08-11 devnull 	u64int	ibno;			/* disk block address of first inode */
255 e060bc52 2005-08-11 devnull 	u64int	dbno;			/* disk block address of first data */
256 e060bc52 2005-08-11 devnull 	u64int	cgblkno;
257 0c98da8b 2005-07-13 devnull };
258 0c98da8b 2005-07-13 devnull 
259 0c98da8b 2005-07-13 devnull /*
260 0c98da8b 2005-07-13 devnull  * this is the on-disk structure
261 0c98da8b 2005-07-13 devnull  */
262 e060bc52 2005-08-11 devnull struct Inode1
263 0c98da8b 2005-07-13 devnull {
264 0c98da8b 2005-07-13 devnull 	u16int	mode;
265 0c98da8b 2005-07-13 devnull 	u16int	nlink;
266 0c98da8b 2005-07-13 devnull 	u32int	unused;
267 0c98da8b 2005-07-13 devnull 	u64int	size;
268 0c98da8b 2005-07-13 devnull 	u32int	atime;
269 0c98da8b 2005-07-13 devnull 	u32int	atimensec;
270 0c98da8b 2005-07-13 devnull 	u32int	mtime;
271 0c98da8b 2005-07-13 devnull 	u32int	mtimensec;
272 0c98da8b 2005-07-13 devnull 	u32int	ctime;
273 0c98da8b 2005-07-13 devnull 	u32int	ctimensec;
274 0c98da8b 2005-07-13 devnull 	/* rdev is db[0] */
275 0c98da8b 2005-07-13 devnull 	u32int	db[NDADDR];
276 0c98da8b 2005-07-13 devnull 	u32int	ib[NIADDR];
277 0c98da8b 2005-07-13 devnull 	u32int	flags;
278 0c98da8b 2005-07-13 devnull 	u32int	nblock;
279 0c98da8b 2005-07-13 devnull 	u32int	gen;
280 0c98da8b 2005-07-13 devnull 	u32int	uid;
281 0c98da8b 2005-07-13 devnull 	u32int	gid;
282 0c98da8b 2005-07-13 devnull 	u32int	spare[2];
283 0c98da8b 2005-07-13 devnull };
284 0c98da8b 2005-07-13 devnull 
285 e060bc52 2005-08-11 devnull struct Inode
286 e060bc52 2005-08-11 devnull {
287 e060bc52 2005-08-11 devnull 	u16int	mode;
288 e060bc52 2005-08-11 devnull 	u16int	nlink;
289 e060bc52 2005-08-11 devnull 	u32int	uid;
290 e060bc52 2005-08-11 devnull 	u32int	gid;
291 e060bc52 2005-08-11 devnull 	u32int	blksize;
292 e060bc52 2005-08-11 devnull 	u64int	size;
293 e060bc52 2005-08-11 devnull 	u64int	nblock;
294 e060bc52 2005-08-11 devnull 	u64int	atime;
295 e060bc52 2005-08-11 devnull 	u64int	mtime;
296 e060bc52 2005-08-11 devnull 	u64int	ctime;
297 e060bc52 2005-08-11 devnull 	u64int	btime;
298 e060bc52 2005-08-11 devnull 	u32int	atimensec;
299 e060bc52 2005-08-11 devnull 	u32int	mtimensec;
300 e060bc52 2005-08-11 devnull 	u32int	ctimensec;
301 e060bc52 2005-08-11 devnull 	u32int	btimensec;
302 e060bc52 2005-08-11 devnull 	u32int	gen;
303 e060bc52 2005-08-11 devnull 	u32int	kernflags;
304 e060bc52 2005-08-11 devnull 	u32int	flags;
305 e060bc52 2005-08-11 devnull 	u32int	extsize;
306 e060bc52 2005-08-11 devnull 	u64int	ext[NXADDR];
307 e060bc52 2005-08-11 devnull 	u64int	db[NDADDR];
308 e060bc52 2005-08-11 devnull 	u64int	ib[NIADDR];
309 e060bc52 2005-08-11 devnull 	u64int	spare[3];
310 e060bc52 2005-08-11 devnull };
311 e060bc52 2005-08-11 devnull 
312 0c98da8b 2005-07-13 devnull struct Dirent
313 0c98da8b 2005-07-13 devnull {
314 0c98da8b 2005-07-13 devnull 	u32int	ino;
315 0c98da8b 2005-07-13 devnull 	u16int	reclen;
316 0c98da8b 2005-07-13 devnull 	u8int	type;
317 0c98da8b 2005-07-13 devnull 	u8int	namlen;
318 0c98da8b 2005-07-13 devnull 	char		name[1];
319 0c98da8b 2005-07-13 devnull };
320 0c98da8b 2005-07-13 devnull 
321 0c98da8b 2005-07-13 devnull /*
322 0c98da8b 2005-07-13 devnull  * main file system structure
323 0c98da8b 2005-07-13 devnull  */
324 0c98da8b 2005-07-13 devnull struct Ffs
325 0c98da8b 2005-07-13 devnull {
326 e060bc52 2005-08-11 devnull 	int		ufs;
327 0c98da8b 2005-07-13 devnull 	int		blocksize;
328 e060bc52 2005-08-11 devnull 	u64int	nblock;
329 0c98da8b 2005-07-13 devnull 	int		fragsize;
330 0c98da8b 2005-07-13 devnull 	int		fragsperblock;
331 0c98da8b 2005-07-13 devnull 	int		inosperblock;
332 e060bc52 2005-08-11 devnull 	u64int	blockspergroup;
333 e060bc52 2005-08-11 devnull 	u64int	fragspergroup;
334 0c98da8b 2005-07-13 devnull 	int		inospergroup;
335 0c98da8b 2005-07-13 devnull 
336 e060bc52 2005-08-11 devnull 	u64int	nfrag;
337 e060bc52 2005-08-11 devnull 	u64int	ndfrag;
338 0c98da8b 2005-07-13 devnull 
339 0c98da8b 2005-07-13 devnull 	int		ncg;
340 0c98da8b 2005-07-13 devnull 	Cylgrp	*cg;
341 0c98da8b 2005-07-13 devnull 
342 0c98da8b 2005-07-13 devnull 	Disk		*disk;
343 0c98da8b 2005-07-13 devnull };
344 0c98da8b 2005-07-13 devnull