1 0c98da8b 2005-07-13 devnull #include <u.h>
2 0c98da8b 2005-07-13 devnull #include <libc.h>
3 0c98da8b 2005-07-13 devnull #include <thread.h>
4 0c98da8b 2005-07-13 devnull #include <sunrpc.h>
5 0c98da8b 2005-07-13 devnull #include <nfs3.h>
6 0c98da8b 2005-07-13 devnull #include <diskfs.h>
7 0c98da8b 2005-07-13 devnull #include "ext2.h"
9 83ab7d88 2007-11-27 rsc static void parsedirent(Dirent*, uchar*);
10 83ab7d88 2007-11-27 rsc static void parseinode(Inode*, uchar*);
11 83ab7d88 2007-11-27 rsc static void parsegroup(Group*, uchar*);
12 83ab7d88 2007-11-27 rsc static void parsesuper(Super*, uchar*);
14 e77222a4 2006-05-04 devnull #define debug 0
16 0c98da8b 2005-07-13 devnull static int ext2sync(Fsys*);
17 0c98da8b 2005-07-13 devnull static void ext2close(Fsys*);
18 0c98da8b 2005-07-13 devnull static Block* ext2blockread(Fsys*, u64int);
20 0c98da8b 2005-07-13 devnull static Nfs3Status ext2root(Fsys*, Nfs3Handle*);
21 0c98da8b 2005-07-13 devnull static Nfs3Status ext2getattr(Fsys*, SunAuthUnix *au, Nfs3Handle*, Nfs3Attr*);
22 0c98da8b 2005-07-13 devnull static Nfs3Status ext2lookup(Fsys*, SunAuthUnix *au, Nfs3Handle*, char*, Nfs3Handle*);
23 0c98da8b 2005-07-13 devnull static Nfs3Status ext2readfile(Fsys*, SunAuthUnix *au, Nfs3Handle*, u32int, u64int, uchar**, u32int*, u1int*);
24 0c98da8b 2005-07-13 devnull static Nfs3Status ext2readlink(Fsys *fsys, SunAuthUnix *au, Nfs3Handle *h, char **link);
25 0c98da8b 2005-07-13 devnull static Nfs3Status ext2readdir(Fsys *fsys, SunAuthUnix *au, Nfs3Handle *h, u32int, u64int, uchar**, u32int*, u1int*);
26 0c98da8b 2005-07-13 devnull static Nfs3Status ext2access(Fsys *fsys, SunAuthUnix *au, Nfs3Handle *h, u32int want, u32int *got, Nfs3Attr *attr);
29 0c98da8b 2005-07-13 devnull fsysopenext2(Disk *disk)
31 0c98da8b 2005-07-13 devnull Ext2 *fs;
32 0c98da8b 2005-07-13 devnull Fsys *fsys;
34 0c98da8b 2005-07-13 devnull fsys = emalloc(sizeof(Fsys));
35 0c98da8b 2005-07-13 devnull fs = emalloc(sizeof(Ext2));
36 0c98da8b 2005-07-13 devnull fs->disk = disk;
37 0c98da8b 2005-07-13 devnull fsys->priv = fs;
38 0c98da8b 2005-07-13 devnull fs->fsys = fsys;
39 0c98da8b 2005-07-13 devnull fsys->type = "ext2";
40 0c98da8b 2005-07-13 devnull fsys->_readblock = ext2blockread;
41 0c98da8b 2005-07-13 devnull fsys->_sync = ext2sync;
42 0c98da8b 2005-07-13 devnull fsys->_root = ext2root;
43 0c98da8b 2005-07-13 devnull fsys->_getattr = ext2getattr;
44 0c98da8b 2005-07-13 devnull fsys->_access = ext2access;
45 0c98da8b 2005-07-13 devnull fsys->_lookup = ext2lookup;
46 0c98da8b 2005-07-13 devnull fsys->_readfile = ext2readfile;
47 0c98da8b 2005-07-13 devnull fsys->_readlink = ext2readlink;
48 0c98da8b 2005-07-13 devnull fsys->_readdir = ext2readdir;
49 a51dffd3 2006-11-20 devnull fsys->_close = ext2close;
51 0c98da8b 2005-07-13 devnull if(ext2sync(fsys) < 0)
52 0c98da8b 2005-07-13 devnull goto error;
54 0c98da8b 2005-07-13 devnull return fsys;
57 0c98da8b 2005-07-13 devnull ext2close(fsys);
58 0c98da8b 2005-07-13 devnull return nil;
61 0c98da8b 2005-07-13 devnull static void
62 0c98da8b 2005-07-13 devnull ext2close(Fsys *fsys)
64 0c98da8b 2005-07-13 devnull Ext2 *fs;
66 0c98da8b 2005-07-13 devnull fs = fsys->priv;
67 0c98da8b 2005-07-13 devnull free(fs);
68 0c98da8b 2005-07-13 devnull free(fsys);
72 83ab7d88 2007-11-27 rsc ext2group(Ext2 *fs, u32int i, Group *g)
74 0c98da8b 2005-07-13 devnull Block *b;
75 0c98da8b 2005-07-13 devnull u64int addr;
77 0c98da8b 2005-07-13 devnull if(i >= fs->ngroup)
80 0c98da8b 2005-07-13 devnull addr = fs->groupaddr + i/fs->descperblock;
81 0c98da8b 2005-07-13 devnull b = diskread(fs->disk, fs->blocksize, addr*fs->blocksize);
82 0c98da8b 2005-07-13 devnull if(b == nil)
84 83ab7d88 2007-11-27 rsc parsegroup(g, b->data+i%fs->descperblock*GroupSize);
89 0c98da8b 2005-07-13 devnull static Block*
90 0c98da8b 2005-07-13 devnull ext2blockread(Fsys *fsys, u64int vbno)
92 0c98da8b 2005-07-13 devnull Block *bitb;
94 0c98da8b 2005-07-13 devnull uchar *bits;
95 c1a4592d 2006-06-15 devnull u32int bno, boff, bitblock;
96 c1a4592d 2006-06-15 devnull u64int bitpos;
97 0c98da8b 2005-07-13 devnull Ext2 *fs;
99 0c98da8b 2005-07-13 devnull fs = fsys->priv;
100 0c98da8b 2005-07-13 devnull if(vbno >= fs->nblock)
101 0c98da8b 2005-07-13 devnull return nil;
102 0c98da8b 2005-07-13 devnull bno = vbno;
103 0c98da8b 2005-07-13 devnull if(bno != vbno)
104 0c98da8b 2005-07-13 devnull return nil;
107 0c98da8b 2005-07-13 devnull if(bno < fs->firstblock)
108 0c98da8b 2005-07-13 devnull return diskread(fs->disk, fs->blocksize, (u64int)bno*fs->blocksize);
110 0c98da8b 2005-07-13 devnull if(bno < fs->firstblock)
111 0c98da8b 2005-07-13 devnull return nil;
113 0c98da8b 2005-07-13 devnull bno -= fs->firstblock;
114 83ab7d88 2007-11-27 rsc if(ext2group(fs, bno/fs->blockspergroup, &g) < 0){
115 0c98da8b 2005-07-13 devnull if(debug)
116 0c98da8b 2005-07-13 devnull fprint(2, "loading group: %r...");
117 0c98da8b 2005-07-13 devnull return nil;
120 c1a4592d 2006-06-15 devnull if(debug)
121 c1a4592d 2006-06-15 devnull fprint(2, "ext2 group %d: bitblock=%ud inodebitblock=%ud inodeaddr=%ud freeblocks=%ud freeinodes=%ud useddirs=%ud\n",
122 c1a4592d 2006-06-15 devnull (int)(bno/fs->blockspergroup),
124 83ab7d88 2007-11-27 rsc g.inodebitblock,
125 83ab7d88 2007-11-27 rsc g.inodeaddr,
126 83ab7d88 2007-11-27 rsc g.freeblockscount,
127 83ab7d88 2007-11-27 rsc g.freeinodescount,
128 83ab7d88 2007-11-27 rsc g.useddirscount);
130 83ab7d88 2007-11-27 rsc fprint(2, "group %d bitblock=%d...", bno/fs->blockspergroup, g.bitblock);
132 83ab7d88 2007-11-27 rsc bitblock = g.bitblock;
133 c1a4592d 2006-06-15 devnull bitpos = (u64int)bitblock*fs->blocksize;
135 9bbcb80d 2006-06-15 devnull if((bitb = diskread(fs->disk, fs->blocksize, bitpos)) == nil){
136 0c98da8b 2005-07-13 devnull if(debug)
137 0c98da8b 2005-07-13 devnull fprint(2, "loading bitblock: %r...");
138 0c98da8b 2005-07-13 devnull return nil;
140 0c98da8b 2005-07-13 devnull bits = bitb->data;
141 0c98da8b 2005-07-13 devnull boff = bno%fs->blockspergroup;
142 0c98da8b 2005-07-13 devnull if((bits[boff>>3] & (1<<(boff&7))) == 0){
143 0c98da8b 2005-07-13 devnull if(debug)
144 c1a4592d 2006-06-15 devnull fprint(2, "block %d not allocated in group %d: bitblock %d/%lld bits[%d] = %#x\n",
145 c1a4592d 2006-06-15 devnull boff, bno/fs->blockspergroup,
146 c1a4592d 2006-06-15 devnull (int)bitblock,
148 c1a4592d 2006-06-15 devnull boff>>3,
149 c1a4592d 2006-06-15 devnull bits[boff>>3]);
150 0c98da8b 2005-07-13 devnull blockput(bitb);
151 0c98da8b 2005-07-13 devnull return nil;
153 9bbcb80d 2006-06-15 devnull blockput(bitb);
155 0c98da8b 2005-07-13 devnull bno += fs->firstblock;
156 0c98da8b 2005-07-13 devnull return diskread(fs->disk, fs->blocksize, (u64int)bno*fs->blocksize);
159 0c98da8b 2005-07-13 devnull static Block*
160 0c98da8b 2005-07-13 devnull ext2datablock(Ext2 *fs, u32int bno, int size)
162 3330e5bf 2005-10-29 devnull USED(size);
163 e77222a4 2006-05-04 devnull return ext2blockread(fs->fsys, bno);
166 0c98da8b 2005-07-13 devnull static Block*
167 0c98da8b 2005-07-13 devnull ext2fileblock(Ext2 *fs, Inode *ino, u32int bno, int size)
169 0c98da8b 2005-07-13 devnull int ppb;
170 0c98da8b 2005-07-13 devnull Block *b;
171 0c98da8b 2005-07-13 devnull u32int *a;
172 b109049f 2007-03-25 devnull u32int obno, pbno;
174 0c98da8b 2005-07-13 devnull obno = bno;
175 0c98da8b 2005-07-13 devnull if(bno < NDIRBLOCKS){
176 0c98da8b 2005-07-13 devnull if(debug)
177 0c98da8b 2005-07-13 devnull fprint(2, "fileblock %d -> %d...",
178 0c98da8b 2005-07-13 devnull bno, ino->block[bno]);
179 0c98da8b 2005-07-13 devnull return ext2datablock(fs, ino->block[bno], size);
181 0c98da8b 2005-07-13 devnull bno -= NDIRBLOCKS;
182 0c98da8b 2005-07-13 devnull ppb = fs->blocksize/4;
184 0c98da8b 2005-07-13 devnull /* one indirect */
185 0c98da8b 2005-07-13 devnull if(bno < ppb){
186 0c98da8b 2005-07-13 devnull b = ext2datablock(fs, ino->block[INDBLOCK], fs->blocksize);
187 0c98da8b 2005-07-13 devnull if(b == nil)
188 0c98da8b 2005-07-13 devnull return nil;
189 0c98da8b 2005-07-13 devnull a = (u32int*)b->data;
190 b109049f 2007-03-25 devnull bno = a[bno];
191 0c98da8b 2005-07-13 devnull blockput(b);
192 0c98da8b 2005-07-13 devnull return ext2datablock(fs, bno, size);
194 0c98da8b 2005-07-13 devnull bno -= ppb;
196 0c98da8b 2005-07-13 devnull /* one double indirect */
197 0c98da8b 2005-07-13 devnull if(bno < ppb*ppb){
198 0c98da8b 2005-07-13 devnull b = ext2datablock(fs, ino->block[DINDBLOCK], fs->blocksize);
199 0c98da8b 2005-07-13 devnull if(b == nil)
200 0c98da8b 2005-07-13 devnull return nil;
201 0c98da8b 2005-07-13 devnull a = (u32int*)b->data;
202 b109049f 2007-03-25 devnull pbno = a[bno/ppb];
203 b109049f 2007-03-25 devnull bno = bno%ppb;
204 0c98da8b 2005-07-13 devnull blockput(b);
205 b109049f 2007-03-25 devnull b = ext2datablock(fs, pbno, fs->blocksize);
206 0c98da8b 2005-07-13 devnull if(b == nil)
207 0c98da8b 2005-07-13 devnull return nil;
208 0c98da8b 2005-07-13 devnull a = (u32int*)b->data;
209 b109049f 2007-03-25 devnull bno = a[bno];
210 0c98da8b 2005-07-13 devnull blockput(b);
211 0c98da8b 2005-07-13 devnull return ext2datablock(fs, bno, size);
213 0c98da8b 2005-07-13 devnull bno -= ppb*ppb;
215 0c98da8b 2005-07-13 devnull /* one triple indirect */
216 0c98da8b 2005-07-13 devnull if(bno < ppb*ppb*ppb){
217 0c98da8b 2005-07-13 devnull b = ext2datablock(fs, ino->block[TINDBLOCK], fs->blocksize);
218 0c98da8b 2005-07-13 devnull if(b == nil)
219 0c98da8b 2005-07-13 devnull return nil;
220 0c98da8b 2005-07-13 devnull a = (u32int*)b->data;
221 b109049f 2007-03-25 devnull pbno = a[bno/(ppb*ppb)];
222 b109049f 2007-03-25 devnull bno = bno%(ppb*ppb);
223 0c98da8b 2005-07-13 devnull blockput(b);
224 b109049f 2007-03-25 devnull b = ext2datablock(fs, pbno, fs->blocksize);
225 0c98da8b 2005-07-13 devnull if(b == nil)
226 0c98da8b 2005-07-13 devnull return nil;
227 0c98da8b 2005-07-13 devnull a = (u32int*)b->data;
228 b109049f 2007-03-25 devnull pbno = a[bno/ppb];
229 b109049f 2007-03-25 devnull bno = bno%ppb;
230 0c98da8b 2005-07-13 devnull blockput(b);
231 b109049f 2007-03-25 devnull b = ext2datablock(fs, pbno, fs->blocksize);
232 0c98da8b 2005-07-13 devnull if(b == nil)
233 0c98da8b 2005-07-13 devnull return nil;
234 0c98da8b 2005-07-13 devnull a = (u32int*)b->data;
235 b109049f 2007-03-25 devnull bno = a[bno];
236 0c98da8b 2005-07-13 devnull blockput(b);
237 0c98da8b 2005-07-13 devnull return ext2datablock(fs, bno, size);
240 3330e5bf 2005-10-29 devnull fprint(2, "ext2fileblock %ud: too big\n", obno);
241 0c98da8b 2005-07-13 devnull return nil;
244 0c98da8b 2005-07-13 devnull static int
245 0c98da8b 2005-07-13 devnull checksuper(Super *super)
247 0c98da8b 2005-07-13 devnull if(super->magic != SUPERMAGIC){
248 0c98da8b 2005-07-13 devnull werrstr("bad magic 0x%ux wanted 0x%ux", super->magic, SUPERMAGIC);
249 0c98da8b 2005-07-13 devnull return -1;
251 0c98da8b 2005-07-13 devnull return 0;
254 0c98da8b 2005-07-13 devnull static int
255 0c98da8b 2005-07-13 devnull ext2sync(Fsys *fsys)
259 0c98da8b 2005-07-13 devnull Block *b;
260 83ab7d88 2007-11-27 rsc Super super;
261 0c98da8b 2005-07-13 devnull Ext2 *fs;
262 0c98da8b 2005-07-13 devnull Disk *disk;
264 0c98da8b 2005-07-13 devnull fs = fsys->priv;
265 0c98da8b 2005-07-13 devnull disk = fs->disk;
266 0c98da8b 2005-07-13 devnull if((b = diskread(disk, SBSIZE, SBOFF)) == nil)
268 83ab7d88 2007-11-27 rsc parsesuper(&super, b->data);
269 83ab7d88 2007-11-27 rsc blockput(b);
270 83ab7d88 2007-11-27 rsc if(checksuper(&super) < 0)
272 83ab7d88 2007-11-27 rsc fs->blocksize = MINBLOCKSIZE<<super.logblocksize;
273 83ab7d88 2007-11-27 rsc fs->nblock = super.nblock;
274 83ab7d88 2007-11-27 rsc fs->ngroup = (super.nblock+super.blockspergroup-1)
275 83ab7d88 2007-11-27 rsc / super.blockspergroup;
276 83ab7d88 2007-11-27 rsc fs->inospergroup = super.inospergroup;
277 83ab7d88 2007-11-27 rsc fs->blockspergroup = super.blockspergroup;
278 0c98da8b 2005-07-13 devnull fs->inosperblock = fs->blocksize / InodeSize;
279 0c98da8b 2005-07-13 devnull if(fs->blocksize == SBOFF)
280 0c98da8b 2005-07-13 devnull fs->groupaddr = 2;
282 0c98da8b 2005-07-13 devnull fs->groupaddr = 1;
283 0c98da8b 2005-07-13 devnull fs->descperblock = fs->blocksize / GroupSize;
284 83ab7d88 2007-11-27 rsc fs->firstblock = super.firstdatablock;
286 0c98da8b 2005-07-13 devnull fsys->blocksize = fs->blocksize;
287 0c98da8b 2005-07-13 devnull fsys->nblock = fs->nblock;
288 27c1d3a4 2007-05-28 devnull if(debug) fprint(2, "ext2 %d %d-byte blocks, first data block %d, %d groups of %d\n",
289 0c98da8b 2005-07-13 devnull fs->nblock, fs->blocksize, fs->firstblock, fs->ngroup, fs->blockspergroup);
292 0c98da8b 2005-07-13 devnull for(i=0; i<fs->ngroup; i++)
293 83ab7d88 2007-11-27 rsc if(ext2group(fs, i, &g) >= 0)
294 83ab7d88 2007-11-27 rsc fprint(2, "grp %d: bitblock=%d\n", i, g.bitblock);
296 0c98da8b 2005-07-13 devnull return 0;
299 0c98da8b 2005-07-13 devnull static void
300 0c98da8b 2005-07-13 devnull mkhandle(Nfs3Handle *h, u64int ino)
302 0c98da8b 2005-07-13 devnull h->h[0] = ino>>24;
303 0c98da8b 2005-07-13 devnull h->h[1] = ino>>16;
304 0c98da8b 2005-07-13 devnull h->h[2] = ino>>8;
305 0c98da8b 2005-07-13 devnull h->h[3] = ino;
306 0c98da8b 2005-07-13 devnull h->len = 4;
309 0c98da8b 2005-07-13 devnull static u32int
310 0c98da8b 2005-07-13 devnull byte2u32(uchar *p)
312 0c98da8b 2005-07-13 devnull return (p[0]<<24) | (p[1]<<16) | (p[2]<<8) | p[3];
315 0c98da8b 2005-07-13 devnull static Nfs3Status
316 0c98da8b 2005-07-13 devnull handle2ino(Ext2 *fs, Nfs3Handle *h, u32int *pinum, Inode *ino)
319 0c98da8b 2005-07-13 devnull uint ioff;
320 0c98da8b 2005-07-13 devnull u32int inum;
321 0c98da8b 2005-07-13 devnull u32int addr;
325 0c98da8b 2005-07-13 devnull if(h->len != 4)
326 0c98da8b 2005-07-13 devnull return Nfs3ErrBadHandle;
327 0c98da8b 2005-07-13 devnull inum = byte2u32(h->h);
328 0c98da8b 2005-07-13 devnull if(pinum)
329 0c98da8b 2005-07-13 devnull *pinum = inum;
330 0c98da8b 2005-07-13 devnull i = (inum-1) / fs->inospergroup;
331 0c98da8b 2005-07-13 devnull if(i >= fs->ngroup)
332 0c98da8b 2005-07-13 devnull return Nfs3ErrBadHandle;
333 0c98da8b 2005-07-13 devnull ioff = (inum-1) % fs->inospergroup;
334 83ab7d88 2007-11-27 rsc if(ext2group(fs, i, &g) < 0)
335 0c98da8b 2005-07-13 devnull return Nfs3ErrIo;
336 83ab7d88 2007-11-27 rsc addr = g.inodeaddr + ioff/fs->inosperblock;
337 0c98da8b 2005-07-13 devnull if((b = diskread(fs->disk, fs->blocksize, (u64int)addr*fs->blocksize)) == nil)
338 0c98da8b 2005-07-13 devnull return Nfs3ErrIo;
339 83ab7d88 2007-11-27 rsc parseinode(ino, b->data+InodeSize*(ioff%fs->inosperblock));
340 0c98da8b 2005-07-13 devnull blockput(b);
341 0c98da8b 2005-07-13 devnull return Nfs3Ok;
344 0c98da8b 2005-07-13 devnull static Nfs3Status
345 0c98da8b 2005-07-13 devnull ext2root(Fsys *fsys, Nfs3Handle *h)
347 3330e5bf 2005-10-29 devnull USED(fsys);
348 0c98da8b 2005-07-13 devnull mkhandle(h, ROOTINODE);
349 0c98da8b 2005-07-13 devnull return Nfs3Ok;
352 b109049f 2007-03-25 devnull static u64int
353 b109049f 2007-03-25 devnull inosize(Inode* ino)
355 b109049f 2007-03-25 devnull u64int size;
357 b109049f 2007-03-25 devnull size = ino->size;
358 b109049f 2007-03-25 devnull if((ino->mode&IFMT)==IFREG)
359 b109049f 2007-03-25 devnull size |= (u64int)ino->diracl << 32;
360 b109049f 2007-03-25 devnull return size;
363 0c98da8b 2005-07-13 devnull static Nfs3Status
364 0c98da8b 2005-07-13 devnull ino2attr(Ext2 *fs, Inode *ino, u32int inum, Nfs3Attr *attr)
366 0c98da8b 2005-07-13 devnull u32int rdev;
368 0c98da8b 2005-07-13 devnull attr->type = -1;
369 0c98da8b 2005-07-13 devnull switch(ino->mode&IFMT){
370 0c98da8b 2005-07-13 devnull case IFIFO:
371 0c98da8b 2005-07-13 devnull attr->type = Nfs3FileFifo;
373 0c98da8b 2005-07-13 devnull case IFCHR:
374 0c98da8b 2005-07-13 devnull attr->type = Nfs3FileChar;
376 0c98da8b 2005-07-13 devnull case IFDIR:
377 0c98da8b 2005-07-13 devnull attr->type = Nfs3FileDir;
379 0c98da8b 2005-07-13 devnull case IFBLK:
380 0c98da8b 2005-07-13 devnull attr->type = Nfs3FileBlock;
382 0c98da8b 2005-07-13 devnull case IFREG:
383 0c98da8b 2005-07-13 devnull attr->type = Nfs3FileReg;
385 0c98da8b 2005-07-13 devnull case IFLNK:
386 0c98da8b 2005-07-13 devnull attr->type = Nfs3FileSymlink;
388 0c98da8b 2005-07-13 devnull case IFSOCK:
389 0c98da8b 2005-07-13 devnull attr->type = Nfs3FileSocket;
391 0c98da8b 2005-07-13 devnull case IFWHT:
392 0c98da8b 2005-07-13 devnull default:
393 0c98da8b 2005-07-13 devnull return Nfs3ErrBadHandle;
396 0c98da8b 2005-07-13 devnull attr->mode = ino->mode&07777;
397 0c98da8b 2005-07-13 devnull attr->nlink = ino->nlink;
398 0c98da8b 2005-07-13 devnull attr->uid = ino->uid;
399 0c98da8b 2005-07-13 devnull attr->gid = ino->gid;
400 b109049f 2007-03-25 devnull attr->size = inosize(ino);
401 b109049f 2007-03-25 devnull attr->used = (u64int)ino->nblock*fs->blocksize;
402 0c98da8b 2005-07-13 devnull if(attr->type==Nfs3FileBlock || attr->type==Nfs3FileChar){
403 0c98da8b 2005-07-13 devnull rdev = ino->block[0];
404 0c98da8b 2005-07-13 devnull attr->major = (rdev>>8)&0xFF;
405 0c98da8b 2005-07-13 devnull attr->minor = rdev & 0xFFFF00FF;
407 0c98da8b 2005-07-13 devnull attr->major = 0;
408 0c98da8b 2005-07-13 devnull attr->minor = 0;
410 0c98da8b 2005-07-13 devnull attr->fsid = 0;
411 0c98da8b 2005-07-13 devnull attr->fileid = inum;
412 0c98da8b 2005-07-13 devnull attr->atime.sec = ino->atime;
413 0c98da8b 2005-07-13 devnull attr->atime.nsec = 0;
414 0c98da8b 2005-07-13 devnull attr->mtime.sec = ino->mtime;
415 0c98da8b 2005-07-13 devnull attr->mtime.nsec = 0;
416 0c98da8b 2005-07-13 devnull attr->ctime.sec = ino->ctime;
417 0c98da8b 2005-07-13 devnull attr->ctime.nsec = 0;
418 0c98da8b 2005-07-13 devnull return Nfs3Ok;
421 0c98da8b 2005-07-13 devnull static int
422 0c98da8b 2005-07-13 devnull ingroup(SunAuthUnix *au, uint gid)
426 0c98da8b 2005-07-13 devnull for(i=0; i<au->ng; i++)
427 0c98da8b 2005-07-13 devnull if(au->g[i] == gid)
428 0c98da8b 2005-07-13 devnull return 1;
429 0c98da8b 2005-07-13 devnull return 0;
432 0c98da8b 2005-07-13 devnull static Nfs3Status
433 0c98da8b 2005-07-13 devnull inoperm(Inode *ino, SunAuthUnix *au, int need)
435 0c98da8b 2005-07-13 devnull int have;
437 0c98da8b 2005-07-13 devnull if(allowall)
438 0c98da8b 2005-07-13 devnull return Nfs3Ok;
440 0c98da8b 2005-07-13 devnull have = ino->mode&0777;
441 0c98da8b 2005-07-13 devnull if(ino->uid == au->uid)
442 0c98da8b 2005-07-13 devnull have >>= 6;
443 0c98da8b 2005-07-13 devnull else if(ino->gid == au->gid || ingroup(au, ino->gid))
444 0c98da8b 2005-07-13 devnull have >>= 3;
446 0c98da8b 2005-07-13 devnull if((have&need) != need)
447 0c98da8b 2005-07-13 devnull return Nfs3ErrNotOwner; /* really EPERM */
448 0c98da8b 2005-07-13 devnull return Nfs3Ok;
451 0c98da8b 2005-07-13 devnull static Nfs3Status
452 0c98da8b 2005-07-13 devnull ext2getattr(Fsys *fsys, SunAuthUnix *au, Nfs3Handle *h, Nfs3Attr *attr)
454 0c98da8b 2005-07-13 devnull Inode ino;
455 0c98da8b 2005-07-13 devnull u32int inum;
456 0c98da8b 2005-07-13 devnull Ext2 *fs;
457 0c98da8b 2005-07-13 devnull Nfs3Status ok;
459 0c98da8b 2005-07-13 devnull fs = fsys->priv;
460 0c98da8b 2005-07-13 devnull if((ok = handle2ino(fs, h, &inum, &ino)) != Nfs3Ok)
461 0c98da8b 2005-07-13 devnull return ok;
463 0c98da8b 2005-07-13 devnull USED(au); /* anyone can getattr */
464 0c98da8b 2005-07-13 devnull return ino2attr(fs, &ino, inum, attr);
467 0c98da8b 2005-07-13 devnull static Nfs3Status
468 0c98da8b 2005-07-13 devnull ext2access(Fsys *fsys, SunAuthUnix *au, Nfs3Handle *h, u32int want, u32int *got, Nfs3Attr *attr)
470 0c98da8b 2005-07-13 devnull int have;
471 0c98da8b 2005-07-13 devnull Inode ino;
472 0c98da8b 2005-07-13 devnull u32int inum;
473 0c98da8b 2005-07-13 devnull Ext2 *fs;
474 0c98da8b 2005-07-13 devnull Nfs3Status ok;
476 0c98da8b 2005-07-13 devnull fs = fsys->priv;
477 0c98da8b 2005-07-13 devnull if((ok = handle2ino(fs, h, &inum, &ino)) != Nfs3Ok)
478 0c98da8b 2005-07-13 devnull return ok;
480 0c98da8b 2005-07-13 devnull have = ino.mode&0777;
481 0c98da8b 2005-07-13 devnull if(ino.uid == au->uid)
482 0c98da8b 2005-07-13 devnull have >>= 6;
483 0c98da8b 2005-07-13 devnull else if(ino.gid == au->gid || ingroup(au, ino.gid))
484 0c98da8b 2005-07-13 devnull have >>= 3;
486 0c98da8b 2005-07-13 devnull *got = 0;
487 0c98da8b 2005-07-13 devnull if((want&Nfs3AccessRead) && (have&AREAD))
488 0c98da8b 2005-07-13 devnull *got |= Nfs3AccessRead;
489 0c98da8b 2005-07-13 devnull if((want&Nfs3AccessLookup) && (ino.mode&IFMT)==IFDIR && (have&AEXEC))
490 0c98da8b 2005-07-13 devnull *got |= Nfs3AccessLookup;
491 0c98da8b 2005-07-13 devnull if((want&Nfs3AccessExecute) && (ino.mode&IFMT)!=IFDIR && (have&AEXEC))
492 0c98da8b 2005-07-13 devnull *got |= Nfs3AccessExecute;
494 0c98da8b 2005-07-13 devnull return ino2attr(fs, &ino, inum, attr);
497 0c98da8b 2005-07-13 devnull static Nfs3Status
498 0c98da8b 2005-07-13 devnull ext2lookup(Fsys *fsys, SunAuthUnix *au, Nfs3Handle *h, char *name, Nfs3Handle *nh)
500 0c98da8b 2005-07-13 devnull u32int nblock;
501 0c98da8b 2005-07-13 devnull u32int i;
502 0c98da8b 2005-07-13 devnull uchar *p, *ep;
504 0c98da8b 2005-07-13 devnull Inode ino;
505 0c98da8b 2005-07-13 devnull Block *b;
506 0c98da8b 2005-07-13 devnull Ext2 *fs;
507 0c98da8b 2005-07-13 devnull Nfs3Status ok;
508 0c98da8b 2005-07-13 devnull int len, want;
510 0c98da8b 2005-07-13 devnull fs = fsys->priv;
511 0c98da8b 2005-07-13 devnull if((ok = handle2ino(fs, h, nil, &ino)) != Nfs3Ok)
512 0c98da8b 2005-07-13 devnull return ok;
514 0c98da8b 2005-07-13 devnull if((ino.mode&IFMT) != IFDIR)
515 0c98da8b 2005-07-13 devnull return Nfs3ErrNotDir;
517 0c98da8b 2005-07-13 devnull if((ok = inoperm(&ino, au, AEXEC)) != Nfs3Ok)
518 0c98da8b 2005-07-13 devnull return ok;
520 0c98da8b 2005-07-13 devnull len = strlen(name);
521 0c98da8b 2005-07-13 devnull nblock = (ino.size+fs->blocksize-1) / fs->blocksize;
522 0c98da8b 2005-07-13 devnull if(debug) fprint(2, "%d blocks in dir...", nblock);
523 0c98da8b 2005-07-13 devnull for(i=0; i<nblock; i++){
524 0c98da8b 2005-07-13 devnull if(i==nblock-1)
525 0c98da8b 2005-07-13 devnull want = ino.size % fs->blocksize;
527 0c98da8b 2005-07-13 devnull want = fs->blocksize;
528 0c98da8b 2005-07-13 devnull b = ext2fileblock(fs, &ino, i, want);
529 0c98da8b 2005-07-13 devnull if(b == nil){
530 0c98da8b 2005-07-13 devnull if(debug) fprint(2, "empty block...");
531 0c98da8b 2005-07-13 devnull continue;
533 0c98da8b 2005-07-13 devnull p = b->data;
534 0c98da8b 2005-07-13 devnull ep = p+b->len;
535 0c98da8b 2005-07-13 devnull while(p < ep){
536 83ab7d88 2007-11-27 rsc parsedirent(&de, p);
537 83ab7d88 2007-11-27 rsc if(de.reclen == 0){
538 0c98da8b 2005-07-13 devnull if(debug)
539 0c98da8b 2005-07-13 devnull fprint(2, "reclen 0 at offset %d of %d\n", (int)(p-b->data), b->len);
542 83ab7d88 2007-11-27 rsc p += de.reclen;
543 0c98da8b 2005-07-13 devnull if(p > ep){
544 0c98da8b 2005-07-13 devnull if(debug)
545 83ab7d88 2007-11-27 rsc fprint(2, "bad len %d at offset %d of %d\n", de.reclen, (int)(p-b->data), b->len);
548 83ab7d88 2007-11-27 rsc if(de.ino == 0)
549 0c98da8b 2005-07-13 devnull continue;
550 83ab7d88 2007-11-27 rsc if(4+2+2+de.namlen > de.reclen){
551 0c98da8b 2005-07-13 devnull if(debug)
552 83ab7d88 2007-11-27 rsc fprint(2, "bad namelen %d at offset %d of %d\n", de.namlen, (int)(p-b->data), b->len);
555 83ab7d88 2007-11-27 rsc if(de.namlen == len && memcmp(de.name, name, len) == 0){
556 83ab7d88 2007-11-27 rsc mkhandle(nh, de.ino);
557 0c98da8b 2005-07-13 devnull blockput(b);
558 0c98da8b 2005-07-13 devnull return Nfs3Ok;
561 0c98da8b 2005-07-13 devnull blockput(b);
563 0c98da8b 2005-07-13 devnull return Nfs3ErrNoEnt;
566 0c98da8b 2005-07-13 devnull static Nfs3Status
567 0c98da8b 2005-07-13 devnull ext2readdir(Fsys *fsys, SunAuthUnix *au, Nfs3Handle *h, u32int count, u64int cookie, uchar **pdata, u32int *pcount, u1int *peof)
569 0c98da8b 2005-07-13 devnull u32int nblock;
570 0c98da8b 2005-07-13 devnull u32int i;
571 52abe8e1 2008-01-12 rsc int off, outofspace;
572 0c98da8b 2005-07-13 devnull uchar *data, *dp, *dep, *p, *ep, *ndp;
574 0c98da8b 2005-07-13 devnull Inode ino;
575 0c98da8b 2005-07-13 devnull Block *b;
576 0c98da8b 2005-07-13 devnull Ext2 *fs;
577 0c98da8b 2005-07-13 devnull Nfs3Status ok;
578 0c98da8b 2005-07-13 devnull Nfs3Entry e;
579 0c98da8b 2005-07-13 devnull int want;
581 0c98da8b 2005-07-13 devnull fs = fsys->priv;
582 0c98da8b 2005-07-13 devnull if((ok = handle2ino(fs, h, nil, &ino)) != Nfs3Ok)
583 0c98da8b 2005-07-13 devnull return ok;
585 0c98da8b 2005-07-13 devnull if((ino.mode&IFMT) != IFDIR)
586 0c98da8b 2005-07-13 devnull return Nfs3ErrNotDir;
588 0c98da8b 2005-07-13 devnull if((ok = inoperm(&ino, au, AREAD)) != Nfs3Ok)
589 0c98da8b 2005-07-13 devnull return ok;
591 52abe8e1 2008-01-12 rsc if(debug) print("readdir cookie %#llux ino.size %#llux\n",
592 52abe8e1 2008-01-12 rsc (u64int)cookie, (u64int)ino.size);
594 0c98da8b 2005-07-13 devnull if(cookie >= ino.size){
595 63408c39 2007-06-08 devnull *peof = 1;
596 0c98da8b 2005-07-13 devnull *pcount = 0;
597 0c98da8b 2005-07-13 devnull *pdata = 0;
598 0c98da8b 2005-07-13 devnull return Nfs3Ok;
601 0c98da8b 2005-07-13 devnull dp = malloc(count);
602 0c98da8b 2005-07-13 devnull data = dp;
603 0c98da8b 2005-07-13 devnull if(dp == nil)
604 0c98da8b 2005-07-13 devnull return Nfs3ErrNoMem;
605 0c98da8b 2005-07-13 devnull dep = dp+count;
606 0c98da8b 2005-07-13 devnull *peof = 0;
607 0c98da8b 2005-07-13 devnull nblock = (ino.size+fs->blocksize-1) / fs->blocksize;
608 0c98da8b 2005-07-13 devnull i = cookie/fs->blocksize;
609 0c98da8b 2005-07-13 devnull off = cookie%fs->blocksize;
610 52abe8e1 2008-01-12 rsc outofspace = 0;
611 52abe8e1 2008-01-12 rsc for(; i<nblock && !outofspace; i++, off=0){
612 0c98da8b 2005-07-13 devnull if(i==nblock-1)
613 0c98da8b 2005-07-13 devnull want = ino.size % fs->blocksize;
615 0c98da8b 2005-07-13 devnull want = fs->blocksize;
616 0c98da8b 2005-07-13 devnull b = ext2fileblock(fs, &ino, i, want);
617 0c98da8b 2005-07-13 devnull if(b == nil)
618 0c98da8b 2005-07-13 devnull continue;
619 0c98da8b 2005-07-13 devnull p = b->data;
620 0c98da8b 2005-07-13 devnull ep = p+b->len;
621 0c98da8b 2005-07-13 devnull memset(&e, 0, sizeof e);
622 0c98da8b 2005-07-13 devnull while(p < ep){
623 83ab7d88 2007-11-27 rsc parsedirent(&de, p);
624 83ab7d88 2007-11-27 rsc if(de.reclen == 0){
625 0c98da8b 2005-07-13 devnull if(debug) fprint(2, "reclen 0 at offset %d of %d\n", (int)(p-b->data), b->len);
628 83ab7d88 2007-11-27 rsc p += de.reclen;
629 0c98da8b 2005-07-13 devnull if(p > ep){
630 83ab7d88 2007-11-27 rsc if(debug) fprint(2, "reclen %d at offset %d of %d\n", de.reclen, (int)(p-b->data), b->len);
633 83ab7d88 2007-11-27 rsc if(de.ino == 0){
634 0c98da8b 2005-07-13 devnull if(debug) fprint(2, "zero inode\n");
635 0c98da8b 2005-07-13 devnull continue;
637 83ab7d88 2007-11-27 rsc if(4+2+2+de.namlen > de.reclen){
638 83ab7d88 2007-11-27 rsc if(debug) fprint(2, "bad namlen %d reclen %d at offset %d of %d\n", de.namlen, de.reclen, (int)(p-b->data), b->len);
641 83ab7d88 2007-11-27 rsc if(debug) print("%.*s/%d ", de.namlen, de.name, (int)de.ino);
642 83ab7d88 2007-11-27 rsc if(p-de.reclen - b->data < off)
643 0c98da8b 2005-07-13 devnull continue;
644 83ab7d88 2007-11-27 rsc e.fileid = de.ino;
645 83ab7d88 2007-11-27 rsc e.name = de.name;
646 83ab7d88 2007-11-27 rsc e.namelen = de.namlen;
647 0c98da8b 2005-07-13 devnull e.cookie = (u64int)i*fs->blocksize + (p - b->data);
648 52abe8e1 2008-01-12 rsc if(debug) print("%.*s %#llux\n", utfnlen(e.name, e.namelen), e.name, (u64int)e.cookie);
649 0c98da8b 2005-07-13 devnull if(nfs3entrypack(dp, dep, &ndp, &e) < 0){
650 52abe8e1 2008-01-12 rsc outofspace = 1;
653 0c98da8b 2005-07-13 devnull dp = ndp;
655 0c98da8b 2005-07-13 devnull blockput(b);
657 52abe8e1 2008-01-12 rsc if(i==nblock && !outofspace)
658 0c98da8b 2005-07-13 devnull *peof = 1;
660 0c98da8b 2005-07-13 devnull *pcount = dp - data;
661 0c98da8b 2005-07-13 devnull *pdata = data;
662 0c98da8b 2005-07-13 devnull return Nfs3Ok;
665 0c98da8b 2005-07-13 devnull static Nfs3Status
666 0c98da8b 2005-07-13 devnull ext2readfile(Fsys *fsys, SunAuthUnix *au, Nfs3Handle *h, u32int count,
667 0c98da8b 2005-07-13 devnull u64int offset, uchar **pdata, u32int *pcount, u1int *peof)
669 0c98da8b 2005-07-13 devnull uchar *data;
670 0c98da8b 2005-07-13 devnull Block *b;
671 0c98da8b 2005-07-13 devnull Ext2 *fs;
672 fa5af687 2006-06-15 devnull int skip1, tot, want, fragcount;
673 0c98da8b 2005-07-13 devnull Inode ino;
674 0c98da8b 2005-07-13 devnull Nfs3Status ok;
675 b109049f 2007-03-25 devnull u64int size;
677 0c98da8b 2005-07-13 devnull fs = fsys->priv;
678 0c98da8b 2005-07-13 devnull if((ok = handle2ino(fs, h, nil, &ino)) != Nfs3Ok)
679 0c98da8b 2005-07-13 devnull return ok;
681 0c98da8b 2005-07-13 devnull if((ok = inoperm(&ino, au, AREAD)) != Nfs3Ok)
682 0c98da8b 2005-07-13 devnull return ok;
684 b109049f 2007-03-25 devnull size = inosize(&ino);
685 b109049f 2007-03-25 devnull if(offset >= size){
686 0c98da8b 2005-07-13 devnull *pdata = 0;
687 0c98da8b 2005-07-13 devnull *pcount = 0;
688 0c98da8b 2005-07-13 devnull *peof = 1;
689 0c98da8b 2005-07-13 devnull return Nfs3Ok;
691 b109049f 2007-03-25 devnull if(offset+count > size)
692 b109049f 2007-03-25 devnull count = size-offset;
694 0c98da8b 2005-07-13 devnull data = malloc(count);
695 0c98da8b 2005-07-13 devnull if(data == nil)
696 0c98da8b 2005-07-13 devnull return Nfs3ErrNoMem;
697 fa5af687 2006-06-15 devnull memset(data, 0, count);
699 fa5af687 2006-06-15 devnull skip1 = offset%fs->blocksize;
700 fa5af687 2006-06-15 devnull offset -= skip1;
701 fa5af687 2006-06-15 devnull want = skip1+count;
704 fa5af687 2006-06-15 devnull * have to read multiple blocks if we get asked for a big read.
705 fa5af687 2006-06-15 devnull * Linux NFS client assumes that if you ask for 8k and only get 4k
706 fa5af687 2006-06-15 devnull * back, the remaining 4k is zeros.
708 fa5af687 2006-06-15 devnull for(tot=0; tot<want; tot+=fragcount){
709 fa5af687 2006-06-15 devnull b = ext2fileblock(fs, &ino, (offset+tot)/fs->blocksize, fs->blocksize);
710 fa5af687 2006-06-15 devnull fragcount = fs->blocksize;
711 fa5af687 2006-06-15 devnull if(b == nil)
712 fa5af687 2006-06-15 devnull continue;
713 fa5af687 2006-06-15 devnull if(tot+fragcount > want)
714 fa5af687 2006-06-15 devnull fragcount = want - tot;
715 fa5af687 2006-06-15 devnull if(tot == 0)
716 fa5af687 2006-06-15 devnull memmove(data, b->data+skip1, fragcount-skip1);
718 fa5af687 2006-06-15 devnull memmove(data+tot-skip1, b->data, fragcount);
719 0c98da8b 2005-07-13 devnull blockput(b);
721 fa5af687 2006-06-15 devnull count = tot - skip1;
723 b109049f 2007-03-25 devnull *peof = (offset+count == size);
724 0c98da8b 2005-07-13 devnull *pcount = count;
725 0c98da8b 2005-07-13 devnull *pdata = data;
726 0c98da8b 2005-07-13 devnull return Nfs3Ok;
729 0c98da8b 2005-07-13 devnull static Nfs3Status
730 0c98da8b 2005-07-13 devnull ext2readlink(Fsys *fsys, SunAuthUnix *au, Nfs3Handle *h, char **link)
732 0c98da8b 2005-07-13 devnull Ext2 *fs;
733 0c98da8b 2005-07-13 devnull Nfs3Status ok;
734 0c98da8b 2005-07-13 devnull int len;
735 0c98da8b 2005-07-13 devnull Inode ino;
736 0c98da8b 2005-07-13 devnull Block *b;
738 0c98da8b 2005-07-13 devnull fs = fsys->priv;
739 0c98da8b 2005-07-13 devnull if((ok = handle2ino(fs, h, nil, &ino)) != Nfs3Ok)
740 0c98da8b 2005-07-13 devnull return ok;
741 0c98da8b 2005-07-13 devnull if((ok = inoperm(&ino, au, AREAD)) != Nfs3Ok)
742 0c98da8b 2005-07-13 devnull return ok;
744 0c98da8b 2005-07-13 devnull if(ino.size > 1024)
745 0c98da8b 2005-07-13 devnull return Nfs3ErrIo;
746 0c98da8b 2005-07-13 devnull len = ino.size;
748 0c98da8b 2005-07-13 devnull if(ino.nblock != 0){
749 0c98da8b 2005-07-13 devnull /* BUG: assumes symlink fits in one block */
750 0c98da8b 2005-07-13 devnull b = ext2fileblock(fs, &ino, 0, len);
751 0c98da8b 2005-07-13 devnull if(b == nil)
752 0c98da8b 2005-07-13 devnull return Nfs3ErrIo;
753 0c98da8b 2005-07-13 devnull if(memchr(b->data, 0, len) != nil){
754 0c98da8b 2005-07-13 devnull blockput(b);
755 0c98da8b 2005-07-13 devnull return Nfs3ErrIo;
757 0c98da8b 2005-07-13 devnull *link = malloc(len+1);
758 0c98da8b 2005-07-13 devnull if(*link == 0){
759 0c98da8b 2005-07-13 devnull blockput(b);
760 0c98da8b 2005-07-13 devnull return Nfs3ErrNoMem;
762 0c98da8b 2005-07-13 devnull memmove(*link, b->data, len);
763 0c98da8b 2005-07-13 devnull (*link)[len] = 0;
764 0c98da8b 2005-07-13 devnull blockput(b);
765 0c98da8b 2005-07-13 devnull return Nfs3Ok;
768 0c98da8b 2005-07-13 devnull if(len > sizeof ino.block)
769 0c98da8b 2005-07-13 devnull return Nfs3ErrIo;
771 0c98da8b 2005-07-13 devnull *link = malloc(len+1);
772 0c98da8b 2005-07-13 devnull if(*link == 0)
773 0c98da8b 2005-07-13 devnull return Nfs3ErrNoMem;
774 0c98da8b 2005-07-13 devnull memmove(*link, ino.block, ino.size);
775 0c98da8b 2005-07-13 devnull (*link)[len] = 0;
776 0c98da8b 2005-07-13 devnull return Nfs3Ok;
780 83ab7d88 2007-11-27 rsc * Ext2 is always little-endian, even on big-endian machines.
783 83ab7d88 2007-11-27 rsc static u32int
784 83ab7d88 2007-11-27 rsc l32(uchar *p)
786 83ab7d88 2007-11-27 rsc return p[0] | (p[1]<<8) | (p[2]<<16) | (p[3]<<24);
789 83ab7d88 2007-11-27 rsc static u16int
790 83ab7d88 2007-11-27 rsc l16(uchar *p)
792 83ab7d88 2007-11-27 rsc return p[0] | (p[1]<<8);
795 83ab7d88 2007-11-27 rsc static u8int
796 83ab7d88 2007-11-27 rsc l8(uchar *p)
798 83ab7d88 2007-11-27 rsc return p[0];
802 83ab7d88 2007-11-27 rsc parsedirent(Dirent *de, uchar *p)
804 83ab7d88 2007-11-27 rsc de->ino = l32(p);
805 83ab7d88 2007-11-27 rsc de->reclen = l16(p+4);
806 83ab7d88 2007-11-27 rsc de->namlen = l8(p+6);
807 83ab7d88 2007-11-27 rsc /* 1 byte pad */
808 83ab7d88 2007-11-27 rsc de->name = (char*)p+8;
812 83ab7d88 2007-11-27 rsc parseinode(Inode *ino, uchar *p)
816 83ab7d88 2007-11-27 rsc ino->mode = l16(p);
817 83ab7d88 2007-11-27 rsc ino->uid = l16(p+2);
818 83ab7d88 2007-11-27 rsc ino->size = l32(p+4);
819 83ab7d88 2007-11-27 rsc ino->atime = l32(p+8);
820 83ab7d88 2007-11-27 rsc ino->ctime = l32(p+12);
821 83ab7d88 2007-11-27 rsc ino->mtime = l32(p+16);
822 83ab7d88 2007-11-27 rsc ino->dtime = l32(p+20);
823 83ab7d88 2007-11-27 rsc ino->gid = l16(p+24);
824 83ab7d88 2007-11-27 rsc ino->nlink = l16(p+26);
825 83ab7d88 2007-11-27 rsc ino->nblock = l32(p+28);
826 83ab7d88 2007-11-27 rsc ino->flags = l32(p+32);
827 83ab7d88 2007-11-27 rsc /* 4 byte osd1 */
828 83ab7d88 2007-11-27 rsc for(i=0; i<NBLOCKS; i++)
829 83ab7d88 2007-11-27 rsc ino->block[i] = l32(p+40+i*4);
830 83ab7d88 2007-11-27 rsc ino->version = l32(p+100);
831 83ab7d88 2007-11-27 rsc ino->fileacl = l32(p+104);
832 83ab7d88 2007-11-27 rsc ino->diracl = l32(p+108);
833 83ab7d88 2007-11-27 rsc ino->faddr = l32(p+112);
834 83ab7d88 2007-11-27 rsc /* 12 byte osd2 */
838 83ab7d88 2007-11-27 rsc parsegroup(Group *g, uchar *p)
840 83ab7d88 2007-11-27 rsc g->bitblock = l32(p);
841 83ab7d88 2007-11-27 rsc g->inodebitblock = l32(p+4);
842 83ab7d88 2007-11-27 rsc g->inodeaddr = l32(p+8);
843 83ab7d88 2007-11-27 rsc g->freeblockscount = l16(p+12);
844 83ab7d88 2007-11-27 rsc g->freeinodescount = l16(p+14);
845 83ab7d88 2007-11-27 rsc g->useddirscount = l16(p+16);
846 83ab7d88 2007-11-27 rsc /* 2 byte pad */
847 83ab7d88 2007-11-27 rsc /* 12 byte reserved */
851 83ab7d88 2007-11-27 rsc parsesuper(Super *s, uchar *p)
853 83ab7d88 2007-11-27 rsc s->ninode = l32(p);
854 83ab7d88 2007-11-27 rsc s->nblock = l32(p+4);
855 83ab7d88 2007-11-27 rsc s->rblockcount = l32(p+8);
856 83ab7d88 2007-11-27 rsc s->freeblockcount = l32(p+12);
857 83ab7d88 2007-11-27 rsc s->freeinodecount = l32(p+16);
858 83ab7d88 2007-11-27 rsc s->firstdatablock = l32(p+20);
859 83ab7d88 2007-11-27 rsc s->logblocksize = l32(p+24);
860 83ab7d88 2007-11-27 rsc s->logfragsize = l32(p+28);
861 83ab7d88 2007-11-27 rsc s->blockspergroup = l32(p+32);
862 83ab7d88 2007-11-27 rsc s->fragpergroup = l32(p+36);
863 83ab7d88 2007-11-27 rsc s->inospergroup = l32(p+40);
864 83ab7d88 2007-11-27 rsc s->mtime = l32(p+44);
865 83ab7d88 2007-11-27 rsc s->wtime = l32(p+48);
866 83ab7d88 2007-11-27 rsc s->mntcount = l16(p+52);
867 83ab7d88 2007-11-27 rsc s->maxmntcount = l16(p+54);
868 83ab7d88 2007-11-27 rsc s->magic = l16(p+56);
869 83ab7d88 2007-11-27 rsc s->state = l16(p+58);
870 83ab7d88 2007-11-27 rsc s->errors = l16(p+60);
871 83ab7d88 2007-11-27 rsc /* 2 byte pad */
872 83ab7d88 2007-11-27 rsc s->lastcheck = l32(p+64);
873 83ab7d88 2007-11-27 rsc s->checkinterval = l32(p+68);
874 83ab7d88 2007-11-27 rsc s->creatoros = l32(p+72);
875 83ab7d88 2007-11-27 rsc s->revlevel = l32(p+76);
876 83ab7d88 2007-11-27 rsc s->defresuid = l16(p+80);
877 83ab7d88 2007-11-27 rsc s->defresgid = l16(p+82);
878 83ab7d88 2007-11-27 rsc /* 940 byte reserved */
