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a2907882 KM |
1 | /* |
2 | * Copyright (c) 1989 The Regents of the University of California. | |
3 | * All rights reserved. | |
4 | * | |
5 | * This code is derived from software contributed to Berkeley by | |
6 | * Rick Macklem at The University of Guelph. | |
7 | * | |
dbf0c423 | 8 | * %sccs.include.redist.c% |
a2907882 | 9 | * |
58055488 | 10 | * @(#)nfs_vnops.c 7.55 (Berkeley) %G% |
a2907882 KM |
11 | */ |
12 | ||
13 | /* | |
14 | * vnode op calls for sun nfs version 2 | |
15 | */ | |
16 | ||
a2907882 | 17 | #include "machine/mtpr.h" |
a2907882 KM |
18 | #include "param.h" |
19 | #include "user.h" | |
20 | #include "proc.h" | |
e49b1a6c | 21 | #include "kernel.h" |
e3f173b4 | 22 | #include "systm.h" |
a2907882 KM |
23 | #include "mount.h" |
24 | #include "buf.h" | |
a2907882 KM |
25 | #include "malloc.h" |
26 | #include "mbuf.h" | |
a2907882 KM |
27 | #include "errno.h" |
28 | #include "file.h" | |
29 | #include "conf.h" | |
30 | #include "vnode.h" | |
9238aa59 | 31 | #include "map.h" |
7c15c5df KM |
32 | #include "../ufs/quota.h" |
33 | #include "../ufs/inode.h" | |
a2907882 KM |
34 | #include "nfsv2.h" |
35 | #include "nfs.h" | |
36 | #include "nfsnode.h" | |
37 | #include "nfsmount.h" | |
38 | #include "xdr_subs.h" | |
39 | #include "nfsm_subs.h" | |
9238aa59 | 40 | #include "nfsiom.h" |
a2907882 KM |
41 | |
42 | /* Defs */ | |
43 | #define TRUE 1 | |
44 | #define FALSE 0 | |
45 | ||
46 | /* Global vars */ | |
47 | int nfs_lookup(), | |
48 | nfs_create(), | |
f67785e5 | 49 | nfs_mknod(), |
a2907882 KM |
50 | nfs_open(), |
51 | nfs_close(), | |
52 | nfs_access(), | |
53 | nfs_getattr(), | |
54 | nfs_setattr(), | |
55 | nfs_read(), | |
56 | nfs_write(), | |
a2907882 KM |
57 | nfs_remove(), |
58 | nfs_link(), | |
59 | nfs_rename(), | |
60 | nfs_mkdir(), | |
61 | nfs_rmdir(), | |
62 | nfs_symlink(), | |
63 | nfs_readdir(), | |
64 | nfs_readlink(), | |
65 | nfs_abortop(), | |
66 | nfs_lock(), | |
67 | nfs_unlock(), | |
68 | nfs_bmap(), | |
69 | nfs_strategy(), | |
9238aa59 | 70 | nfs_fsync(), |
8c7139ba | 71 | nfs_inactive(), |
d002709d | 72 | nfs_reclaim(), |
2bde67fd | 73 | nfs_print(), |
a4128336 | 74 | nfs_islocked(), |
e3f173b4 MK |
75 | nfs_advlock(), |
76 | eopnotsupp(), | |
77 | seltrue(); | |
a2907882 KM |
78 | |
79 | struct vnodeops nfsv2_vnodeops = { | |
d002709d KM |
80 | nfs_lookup, /* lookup */ |
81 | nfs_create, /* create */ | |
82 | nfs_mknod, /* mknod */ | |
83 | nfs_open, /* open */ | |
84 | nfs_close, /* close */ | |
85 | nfs_access, /* access */ | |
86 | nfs_getattr, /* getattr */ | |
87 | nfs_setattr, /* setattr */ | |
88 | nfs_read, /* read */ | |
89 | nfs_write, /* write */ | |
e3f173b4 MK |
90 | eopnotsupp, /* ioctl */ |
91 | seltrue, /* select */ | |
92 | eopnotsupp, /* mmap */ | |
d002709d | 93 | nfs_fsync, /* fsync */ |
e3f173b4 | 94 | nullop, /* seek */ |
d002709d KM |
95 | nfs_remove, /* remove */ |
96 | nfs_link, /* link */ | |
97 | nfs_rename, /* rename */ | |
98 | nfs_mkdir, /* mkdir */ | |
99 | nfs_rmdir, /* rmdir */ | |
100 | nfs_symlink, /* symlink */ | |
101 | nfs_readdir, /* readdir */ | |
102 | nfs_readlink, /* readlink */ | |
103 | nfs_abortop, /* abortop */ | |
104 | nfs_inactive, /* inactive */ | |
105 | nfs_reclaim, /* reclaim */ | |
106 | nfs_lock, /* lock */ | |
107 | nfs_unlock, /* unlock */ | |
108 | nfs_bmap, /* bmap */ | |
109 | nfs_strategy, /* strategy */ | |
110 | nfs_print, /* print */ | |
2bde67fd | 111 | nfs_islocked, /* islocked */ |
a4128336 | 112 | nfs_advlock, /* advlock */ |
a2907882 KM |
113 | }; |
114 | ||
115 | /* Special device vnode ops */ | |
8a1675f3 KM |
116 | int spec_lookup(), |
117 | spec_open(), | |
118 | spec_read(), | |
119 | spec_write(), | |
120 | spec_strategy(), | |
d002709d | 121 | spec_bmap(), |
8a1675f3 KM |
122 | spec_ioctl(), |
123 | spec_select(), | |
124 | spec_close(), | |
125 | spec_badop(), | |
a4128336 | 126 | spec_advlock(); |
a2907882 | 127 | |
8a1675f3 | 128 | struct vnodeops spec_nfsv2nodeops = { |
9106dc18 KM |
129 | spec_lookup, /* lookup */ |
130 | spec_badop, /* create */ | |
131 | spec_badop, /* mknod */ | |
132 | spec_open, /* open */ | |
133 | spec_close, /* close */ | |
134 | nfs_access, /* access */ | |
135 | nfs_getattr, /* getattr */ | |
136 | nfs_setattr, /* setattr */ | |
137 | spec_read, /* read */ | |
138 | spec_write, /* write */ | |
139 | spec_ioctl, /* ioctl */ | |
140 | spec_select, /* select */ | |
141 | spec_badop, /* mmap */ | |
e3f173b4 | 142 | nullop, /* fsync */ |
9106dc18 KM |
143 | spec_badop, /* seek */ |
144 | spec_badop, /* remove */ | |
145 | spec_badop, /* link */ | |
146 | spec_badop, /* rename */ | |
147 | spec_badop, /* mkdir */ | |
148 | spec_badop, /* rmdir */ | |
149 | spec_badop, /* symlink */ | |
150 | spec_badop, /* readdir */ | |
151 | spec_badop, /* readlink */ | |
152 | spec_badop, /* abortop */ | |
153 | nfs_inactive, /* inactive */ | |
154 | nfs_reclaim, /* reclaim */ | |
155 | nfs_lock, /* lock */ | |
156 | nfs_unlock, /* unlock */ | |
d002709d | 157 | spec_bmap, /* bmap */ |
9106dc18 | 158 | spec_strategy, /* strategy */ |
d002709d | 159 | nfs_print, /* print */ |
2bde67fd | 160 | nfs_islocked, /* islocked */ |
a4128336 | 161 | spec_advlock, /* advlock */ |
a2907882 KM |
162 | }; |
163 | ||
b2d955e4 KM |
164 | #ifdef FIFO |
165 | int fifo_lookup(), | |
166 | fifo_open(), | |
167 | fifo_read(), | |
168 | fifo_write(), | |
169 | fifo_bmap(), | |
170 | fifo_ioctl(), | |
171 | fifo_select(), | |
172 | fifo_close(), | |
173 | fifo_print(), | |
174 | fifo_badop(), | |
a4128336 | 175 | fifo_advlock(); |
b2d955e4 KM |
176 | |
177 | struct vnodeops fifo_nfsv2nodeops = { | |
178 | fifo_lookup, /* lookup */ | |
179 | fifo_badop, /* create */ | |
180 | fifo_badop, /* mknod */ | |
181 | fifo_open, /* open */ | |
182 | fifo_close, /* close */ | |
183 | nfs_access, /* access */ | |
184 | nfs_getattr, /* getattr */ | |
185 | nfs_setattr, /* setattr */ | |
186 | fifo_read, /* read */ | |
187 | fifo_write, /* write */ | |
188 | fifo_ioctl, /* ioctl */ | |
189 | fifo_select, /* select */ | |
190 | fifo_badop, /* mmap */ | |
e3f173b4 | 191 | nullop, /* fsync */ |
b2d955e4 KM |
192 | fifo_badop, /* seek */ |
193 | fifo_badop, /* remove */ | |
194 | fifo_badop, /* link */ | |
195 | fifo_badop, /* rename */ | |
196 | fifo_badop, /* mkdir */ | |
197 | fifo_badop, /* rmdir */ | |
198 | fifo_badop, /* symlink */ | |
199 | fifo_badop, /* readdir */ | |
200 | fifo_badop, /* readlink */ | |
201 | fifo_badop, /* abortop */ | |
202 | nfs_inactive, /* inactive */ | |
203 | nfs_reclaim, /* reclaim */ | |
204 | nfs_lock, /* lock */ | |
205 | nfs_unlock, /* unlock */ | |
206 | fifo_bmap, /* bmap */ | |
207 | fifo_badop, /* strategy */ | |
208 | nfs_print, /* print */ | |
209 | nfs_islocked, /* islocked */ | |
a4128336 | 210 | fifo_advlock, /* advlock */ |
b2d955e4 KM |
211 | }; |
212 | #endif /* FIFO */ | |
213 | ||
a2907882 KM |
214 | extern u_long nfs_procids[NFS_NPROCS]; |
215 | extern u_long nfs_prog, nfs_vers; | |
a2907882 | 216 | extern char nfsiobuf[MAXPHYS+NBPG]; |
9238aa59 | 217 | struct map nfsmap[NFS_MSIZ]; |
9238aa59 | 218 | struct buf nfs_bqueue; /* Queue head for nfsiod's */ |
f0f1cbaa | 219 | struct proc *nfs_iodwant[NFS_MAXASYNCDAEMON]; |
1c89915d | 220 | int nfs_numasync = 0; |
9238aa59 | 221 | static int nfsmap_want = 0; |
a2907882 KM |
222 | |
223 | /* | |
224 | * nfs null call from vfs. | |
225 | */ | |
226 | nfs_null(vp, cred) | |
227 | struct vnode *vp; | |
228 | struct ucred *cred; | |
229 | { | |
13576453 KM |
230 | caddr_t bpos, dpos; |
231 | u_long xid; | |
232 | int error = 0; | |
233 | struct mbuf *mreq, *mrep, *md, *mb; | |
a2907882 KM |
234 | |
235 | nfsm_reqhead(nfs_procids[NFSPROC_NULL], cred, 0); | |
d8792713 | 236 | nfsm_request(vp, NFSPROC_NULL, u.u_procp, 0); |
a2907882 KM |
237 | nfsm_reqdone; |
238 | return (error); | |
239 | } | |
240 | ||
241 | /* | |
242 | * nfs access vnode op. | |
243 | * Essentially just get vattr and then imitate iaccess() | |
244 | */ | |
245 | nfs_access(vp, mode, cred) | |
246 | struct vnode *vp; | |
247 | int mode; | |
248 | register struct ucred *cred; | |
249 | { | |
250 | register struct vattr *vap; | |
251 | register gid_t *gp; | |
252 | struct vattr vattr; | |
253 | register int i; | |
254 | int error; | |
255 | ||
256 | /* | |
257 | * If you're the super-user, | |
258 | * you always get access. | |
259 | */ | |
260 | if (cred->cr_uid == 0) | |
261 | return (0); | |
262 | vap = &vattr; | |
d8792713 | 263 | if (error = nfs_dogetattr(vp, vap, cred, 0)) |
9238aa59 | 264 | return (error); |
a2907882 KM |
265 | /* |
266 | * Access check is based on only one of owner, group, public. | |
267 | * If not owner, then check group. If not a member of the | |
268 | * group, then check public access. | |
269 | */ | |
270 | if (cred->cr_uid != vap->va_uid) { | |
271 | mode >>= 3; | |
272 | gp = cred->cr_groups; | |
273 | for (i = 0; i < cred->cr_ngroups; i++, gp++) | |
274 | if (vap->va_gid == *gp) | |
275 | goto found; | |
276 | mode >>= 3; | |
277 | found: | |
278 | ; | |
279 | } | |
280 | if ((vap->va_mode & mode) != 0) | |
281 | return (0); | |
282 | return (EACCES); | |
283 | } | |
284 | ||
285 | /* | |
286 | * nfs open vnode op | |
287 | * Just check to see if the type is ok | |
288 | */ | |
13576453 | 289 | /* ARGSUSED */ |
a2907882 KM |
290 | nfs_open(vp, mode, cred) |
291 | struct vnode *vp; | |
292 | int mode; | |
293 | struct ucred *cred; | |
294 | { | |
295 | register enum vtype vtyp; | |
296 | ||
297 | vtyp = vp->v_type; | |
298 | if (vtyp == VREG || vtyp == VDIR || vtyp == VLNK) | |
299 | return (0); | |
300 | else | |
301 | return (EACCES); | |
302 | } | |
303 | ||
304 | /* | |
305 | * nfs close vnode op | |
9238aa59 | 306 | * For reg files, invalidate any buffer cache entries. |
a2907882 | 307 | */ |
13576453 | 308 | /* ARGSUSED */ |
a2907882 KM |
309 | nfs_close(vp, fflags, cred) |
310 | register struct vnode *vp; | |
311 | int fflags; | |
312 | struct ucred *cred; | |
313 | { | |
13576453 | 314 | register struct nfsnode *np = VTONFS(vp); |
ffe6f482 | 315 | int error = 0; |
a2907882 | 316 | |
f0f1cbaa | 317 | if (vp->v_type == VREG && (np->n_flag & NMODIFIED)) { |
8a1675f3 | 318 | nfs_lock(vp); |
f0f1cbaa | 319 | np->n_flag &= ~NMODIFIED; |
e8540f59 | 320 | vinvalbuf(vp, TRUE); |
f0f1cbaa | 321 | np->n_attrstamp = 0; |
ffe6f482 KM |
322 | if (np->n_flag & NWRITEERR) { |
323 | np->n_flag &= ~NWRITEERR; | |
e8540f59 | 324 | error = np->n_error; |
ffe6f482 | 325 | } |
8a1675f3 | 326 | nfs_unlock(vp); |
9238aa59 | 327 | } |
a2907882 KM |
328 | return (error); |
329 | } | |
330 | ||
331 | /* | |
332 | * nfs getattr call from vfs. | |
333 | */ | |
334 | nfs_getattr(vp, vap, cred) | |
13576453 KM |
335 | register struct vnode *vp; |
336 | struct vattr *vap; | |
a2907882 | 337 | struct ucred *cred; |
d8792713 KM |
338 | { |
339 | return (nfs_dogetattr(vp, vap, cred, 0)); | |
340 | } | |
341 | ||
342 | nfs_dogetattr(vp, vap, cred, tryhard) | |
343 | register struct vnode *vp; | |
344 | struct vattr *vap; | |
345 | struct ucred *cred; | |
346 | int tryhard; | |
a2907882 | 347 | { |
13576453 KM |
348 | register caddr_t cp; |
349 | register long t1; | |
350 | caddr_t bpos, dpos; | |
351 | u_long xid; | |
352 | int error = 0; | |
353 | struct mbuf *mreq, *mrep, *md, *mb, *mb2; | |
a2907882 KM |
354 | |
355 | /* First look in the cache.. */ | |
356 | if (nfs_getattrcache(vp, vap) == 0) | |
357 | return (0); | |
358 | nfsstats.rpccnt[NFSPROC_GETATTR]++; | |
359 | nfsm_reqhead(nfs_procids[NFSPROC_GETATTR], cred, NFSX_FH); | |
360 | nfsm_fhtom(vp); | |
d8792713 | 361 | nfsm_request(vp, NFSPROC_GETATTR, u.u_procp, tryhard); |
a2907882 KM |
362 | nfsm_loadattr(vp, vap); |
363 | nfsm_reqdone; | |
364 | return (error); | |
365 | } | |
366 | ||
367 | /* | |
368 | * nfs setattr call. | |
369 | */ | |
370 | nfs_setattr(vp, vap, cred) | |
13576453 | 371 | register struct vnode *vp; |
a2907882 KM |
372 | register struct vattr *vap; |
373 | struct ucred *cred; | |
374 | { | |
9238aa59 | 375 | register struct nfsv2_sattr *sp; |
13576453 KM |
376 | register caddr_t cp; |
377 | register long t1; | |
378 | caddr_t bpos, dpos; | |
379 | u_long xid; | |
380 | int error = 0; | |
381 | struct mbuf *mreq, *mrep, *md, *mb, *mb2; | |
00b72154 | 382 | struct nfsnode *np; |
a2907882 KM |
383 | |
384 | nfsstats.rpccnt[NFSPROC_SETATTR]++; | |
385 | nfsm_reqhead(nfs_procids[NFSPROC_SETATTR], cred, NFSX_FH+NFSX_SATTR); | |
386 | nfsm_fhtom(vp); | |
9238aa59 | 387 | nfsm_build(sp, struct nfsv2_sattr *, NFSX_SATTR); |
a2907882 | 388 | if (vap->va_mode == 0xffff) |
9238aa59 | 389 | sp->sa_mode = VNOVAL; |
a2907882 | 390 | else |
9238aa59 | 391 | sp->sa_mode = vtonfs_mode(vp->v_type, vap->va_mode); |
a2907882 | 392 | if (vap->va_uid == 0xffff) |
9238aa59 | 393 | sp->sa_uid = VNOVAL; |
a2907882 | 394 | else |
9238aa59 | 395 | sp->sa_uid = txdr_unsigned(vap->va_uid); |
a2907882 | 396 | if (vap->va_gid == 0xffff) |
9238aa59 | 397 | sp->sa_gid = VNOVAL; |
a2907882 | 398 | else |
9238aa59 RM |
399 | sp->sa_gid = txdr_unsigned(vap->va_gid); |
400 | sp->sa_size = txdr_unsigned(vap->va_size); | |
e556b498 KM |
401 | sp->sa_atime.tv_sec = txdr_unsigned(vap->va_atime.tv_sec); |
402 | sp->sa_atime.tv_usec = txdr_unsigned(vap->va_flags); | |
403 | txdr_time(&vap->va_mtime, &sp->sa_mtime); | |
404 | if (vap->va_size != VNOVAL || vap->va_mtime.tv_sec != VNOVAL || | |
405 | vap->va_atime.tv_sec != VNOVAL) { | |
00b72154 KM |
406 | np = VTONFS(vp); |
407 | if (np->n_flag & NMODIFIED) { | |
408 | np->n_flag &= ~NMODIFIED; | |
1c89915d KM |
409 | if (vap->va_size == 0) |
410 | vinvalbuf(vp, FALSE); | |
411 | else | |
412 | vinvalbuf(vp, TRUE); | |
f0f1cbaa | 413 | np->n_attrstamp = 0; |
00b72154 KM |
414 | } |
415 | } | |
d8792713 | 416 | nfsm_request(vp, NFSPROC_SETATTR, u.u_procp, 1); |
a2907882 KM |
417 | nfsm_loadattr(vp, (struct vattr *)0); |
418 | /* should we fill in any vap fields ?? */ | |
419 | nfsm_reqdone; | |
420 | return (error); | |
421 | } | |
422 | ||
423 | /* | |
424 | * nfs lookup call, one step at a time... | |
425 | * First look in cache | |
426 | * If not found, unlock the directory nfsnode and do the rpc | |
427 | */ | |
428 | nfs_lookup(vp, ndp) | |
429 | register struct vnode *vp; | |
430 | register struct nameidata *ndp; | |
431 | { | |
432 | register struct vnode *vdp; | |
13576453 KM |
433 | register u_long *p; |
434 | register caddr_t cp; | |
435 | register long t1, t2; | |
436 | caddr_t bpos, dpos, cp2; | |
437 | u_long xid; | |
438 | struct mbuf *mreq, *mrep, *md, *mb, *mb2; | |
a2907882 KM |
439 | struct vnode *newvp; |
440 | long len; | |
441 | nfsv2fh_t *fhp; | |
442 | struct nfsnode *np; | |
13576453 | 443 | int lockparent, wantparent, flag, error = 0; |
a2907882 KM |
444 | |
445 | ndp->ni_dvp = vp; | |
446 | ndp->ni_vp = NULL; | |
447 | if (vp->v_type != VDIR) | |
448 | return (ENOTDIR); | |
449 | lockparent = ndp->ni_nameiop & LOCKPARENT; | |
10bae9ee | 450 | flag = ndp->ni_nameiop & OPMASK; |
a2907882 | 451 | wantparent = ndp->ni_nameiop & (LOCKPARENT|WANTPARENT); |
ffe6f482 | 452 | if ((error = cache_lookup(ndp)) && error != ENOENT) { |
9238aa59 RM |
453 | struct vattr vattr; |
454 | int vpid; | |
455 | ||
6bf086b5 | 456 | #ifdef PARANOID |
8a1675f3 KM |
457 | if (vp == ndp->ni_rdir && ndp->ni_isdotdot) |
458 | panic("nfs_lookup: .. through root"); | |
6bf086b5 | 459 | #endif |
8a1675f3 | 460 | vdp = ndp->ni_vp; |
9238aa59 | 461 | vpid = vdp->v_id; |
a2907882 | 462 | /* |
9238aa59 RM |
463 | * See the comment starting `Step through' in ufs/ufs_lookup.c |
464 | * for an explanation of the locking protocol | |
a2907882 KM |
465 | */ |
466 | if (vp == vdp) { | |
36c3043b | 467 | VREF(vdp); |
8a1675f3 | 468 | error = 0; |
a2907882 KM |
469 | } else if (ndp->ni_isdotdot) { |
470 | nfs_unlock(vp); | |
8a1675f3 | 471 | error = vget(vdp); |
58055488 KM |
472 | if (!error && lockparent && *ndp->ni_next == '\0') |
473 | nfs_lock(vp); | |
a2907882 | 474 | } else { |
8a1675f3 | 475 | error = vget(vdp); |
58055488 KM |
476 | if (!lockparent || error || *ndp->ni_next != '\0') |
477 | nfs_unlock(vp); | |
a2907882 | 478 | } |
8a1675f3 | 479 | if (!error) { |
8c379a26 | 480 | if (vpid == vdp->v_id) { |
d8792713 | 481 | if (!nfs_dogetattr(vdp, &vattr, ndp->ni_cred, 0) && |
8c379a26 | 482 | vattr.va_ctime.tv_sec == VTONFS(vdp)->n_ctime) { |
8a1675f3 KM |
483 | nfsstats.lookupcache_hits++; |
484 | return (0); | |
8c379a26 | 485 | } |
58055488 | 486 | cache_purge(vdp); |
8a1675f3 | 487 | } |
58055488 KM |
488 | nfs_nput(vdp); |
489 | if (lockparent && vdp != vp && *ndp->ni_next == '\0') | |
490 | nfs_unlock(vp); | |
9238aa59 | 491 | } |
54fb9dc2 | 492 | ndp->ni_vp = NULLVP; |
e8540f59 KM |
493 | } else |
494 | nfs_unlock(vp); | |
ffe6f482 | 495 | error = 0; |
a2907882 | 496 | nfsstats.lookupcache_misses++; |
a2907882 KM |
497 | nfsstats.rpccnt[NFSPROC_LOOKUP]++; |
498 | len = ndp->ni_namelen; | |
499 | nfsm_reqhead(nfs_procids[NFSPROC_LOOKUP], ndp->ni_cred, NFSX_FH+NFSX_UNSIGNED+nfsm_rndup(len)); | |
500 | nfsm_fhtom(vp); | |
501 | nfsm_strtom(ndp->ni_ptr, len, NFS_MAXNAMLEN); | |
d8792713 | 502 | nfsm_request(vp, NFSPROC_LOOKUP, u.u_procp, 0); |
a2907882 KM |
503 | nfsmout: |
504 | if (error) { | |
e8540f59 KM |
505 | if (lockparent || (flag != CREATE && flag != RENAME) || |
506 | *ndp->ni_next != 0) | |
507 | nfs_lock(vp); | |
b2f2eab2 | 508 | return (error); |
a2907882 KM |
509 | } |
510 | nfsm_disect(fhp,nfsv2fh_t *,NFSX_FH); | |
511 | ||
512 | /* | |
513 | * Handle DELETE and RENAME cases... | |
514 | */ | |
515 | if (flag == DELETE && *ndp->ni_next == 0) { | |
516 | if (!bcmp(VTONFS(vp)->n_fh.fh_bytes, (caddr_t)fhp, NFSX_FH)) { | |
36c3043b | 517 | VREF(vp); |
a2907882 KM |
518 | newvp = vp; |
519 | np = VTONFS(vp); | |
520 | } else { | |
521 | if (error = nfs_nget(vp->v_mount, fhp, &np)) { | |
e8540f59 | 522 | nfs_lock(vp); |
a2907882 KM |
523 | m_freem(mrep); |
524 | return (error); | |
525 | } | |
526 | newvp = NFSTOV(np); | |
527 | } | |
f67785e5 KM |
528 | if (error = |
529 | nfs_loadattrcache(&newvp, &md, &dpos, (struct vattr *)0)) { | |
e8540f59 | 530 | nfs_lock(vp); |
a2907882 KM |
531 | if (newvp != vp) |
532 | nfs_nput(newvp); | |
533 | else | |
36c3043b | 534 | vrele(vp); |
a2907882 KM |
535 | m_freem(mrep); |
536 | return (error); | |
537 | } | |
a2907882 | 538 | ndp->ni_vp = newvp; |
e8540f59 KM |
539 | if (lockparent || vp == newvp) |
540 | nfs_lock(vp); | |
a2907882 KM |
541 | m_freem(mrep); |
542 | return (0); | |
543 | } | |
544 | ||
545 | if (flag == RENAME && wantparent && *ndp->ni_next == 0) { | |
546 | if (!bcmp(VTONFS(vp)->n_fh.fh_bytes, (caddr_t)fhp, NFSX_FH)) { | |
e8540f59 | 547 | nfs_lock(vp); |
a2907882 KM |
548 | m_freem(mrep); |
549 | return (EISDIR); | |
550 | } | |
551 | if (error = nfs_nget(vp->v_mount, fhp, &np)) { | |
e8540f59 | 552 | nfs_lock(vp); |
a2907882 KM |
553 | m_freem(mrep); |
554 | return (error); | |
555 | } | |
556 | newvp = NFSTOV(np); | |
f67785e5 KM |
557 | if (error = |
558 | nfs_loadattrcache(&newvp, &md, &dpos, (struct vattr *)0)) { | |
e8540f59 | 559 | nfs_lock(vp); |
36c3043b | 560 | nfs_nput(newvp); |
a2907882 KM |
561 | m_freem(mrep); |
562 | return (error); | |
563 | } | |
564 | ndp->ni_vp = newvp; | |
e8540f59 KM |
565 | if (lockparent) |
566 | nfs_lock(vp); | |
f5dffb64 | 567 | m_freem(mrep); |
a2907882 KM |
568 | return (0); |
569 | } | |
570 | ||
571 | if (!bcmp(VTONFS(vp)->n_fh.fh_bytes, (caddr_t)fhp, NFSX_FH)) { | |
36c3043b | 572 | VREF(vp); |
a2907882 KM |
573 | newvp = vp; |
574 | np = VTONFS(vp); | |
575 | } else if (ndp->ni_isdotdot) { | |
a2907882 KM |
576 | if (error = nfs_nget(vp->v_mount, fhp, &np)) { |
577 | nfs_lock(vp); | |
578 | m_freem(mrep); | |
579 | return (error); | |
580 | } | |
a2907882 KM |
581 | newvp = NFSTOV(np); |
582 | } else { | |
583 | if (error = nfs_nget(vp->v_mount, fhp, &np)) { | |
e8540f59 | 584 | nfs_lock(vp); |
a2907882 KM |
585 | m_freem(mrep); |
586 | return (error); | |
587 | } | |
588 | newvp = NFSTOV(np); | |
589 | } | |
f67785e5 | 590 | if (error = nfs_loadattrcache(&newvp, &md, &dpos, (struct vattr *)0)) { |
e8540f59 | 591 | nfs_lock(vp); |
a2907882 KM |
592 | if (newvp != vp) |
593 | nfs_nput(newvp); | |
594 | else | |
36c3043b | 595 | vrele(vp); |
a2907882 KM |
596 | m_freem(mrep); |
597 | return (error); | |
598 | } | |
599 | m_freem(mrep); | |
a2907882 | 600 | |
e8540f59 KM |
601 | if (vp == newvp || (lockparent && *ndp->ni_next == '\0')) |
602 | nfs_lock(vp); | |
a2907882 | 603 | ndp->ni_vp = newvp; |
8c379a26 KM |
604 | if (error == 0 && ndp->ni_makeentry) { |
605 | np->n_ctime = np->n_vattr.va_ctime.tv_sec; | |
a2907882 | 606 | cache_enter(ndp); |
8c379a26 | 607 | } |
a2907882 KM |
608 | return (error); |
609 | } | |
610 | ||
f0f1cbaa KM |
611 | /* |
612 | * nfs read call. | |
613 | * Just call nfs_bioread() to do the work. | |
614 | */ | |
615 | nfs_read(vp, uiop, ioflag, cred) | |
616 | register struct vnode *vp; | |
617 | struct uio *uiop; | |
618 | int ioflag; | |
619 | struct ucred *cred; | |
620 | { | |
621 | if (vp->v_type != VREG) | |
622 | return (EPERM); | |
623 | return (nfs_bioread(vp, uiop, ioflag, cred)); | |
624 | } | |
625 | ||
a2907882 KM |
626 | /* |
627 | * nfs readlink call | |
628 | */ | |
629 | nfs_readlink(vp, uiop, cred) | |
f0f1cbaa KM |
630 | struct vnode *vp; |
631 | struct uio *uiop; | |
632 | struct ucred *cred; | |
633 | { | |
634 | if (vp->v_type != VLNK) | |
635 | return (EPERM); | |
636 | return (nfs_bioread(vp, uiop, 0, cred)); | |
637 | } | |
638 | ||
639 | /* | |
640 | * Do a readlink rpc. | |
641 | * Called by nfs_doio() from below the buffer cache. | |
642 | */ | |
643 | nfs_readlinkrpc(vp, uiop, cred, procp) | |
13576453 | 644 | register struct vnode *vp; |
a2907882 KM |
645 | struct uio *uiop; |
646 | struct ucred *cred; | |
f0f1cbaa | 647 | struct proc *procp; |
a2907882 | 648 | { |
13576453 KM |
649 | register u_long *p; |
650 | register caddr_t cp; | |
651 | register long t1; | |
652 | caddr_t bpos, dpos, cp2; | |
653 | u_long xid; | |
654 | int error = 0; | |
655 | struct mbuf *mreq, *mrep, *md, *mb, *mb2; | |
a2907882 KM |
656 | long len; |
657 | ||
658 | nfsstats.rpccnt[NFSPROC_READLINK]++; | |
659 | nfsm_reqhead(nfs_procids[NFSPROC_READLINK], cred, NFSX_FH); | |
660 | nfsm_fhtom(vp); | |
d8792713 | 661 | nfsm_request(vp, NFSPROC_READLINK, procp, 0); |
a2907882 KM |
662 | nfsm_strsiz(len, NFS_MAXPATHLEN); |
663 | nfsm_mtouio(uiop, len); | |
664 | nfsm_reqdone; | |
665 | return (error); | |
666 | } | |
667 | ||
668 | /* | |
f0f1cbaa KM |
669 | * nfs read rpc call |
670 | * Ditto above | |
a2907882 | 671 | */ |
f0f1cbaa | 672 | nfs_readrpc(vp, uiop, cred, procp) |
13576453 | 673 | register struct vnode *vp; |
a2907882 | 674 | struct uio *uiop; |
a2907882 | 675 | struct ucred *cred; |
f0f1cbaa | 676 | struct proc *procp; |
a2907882 | 677 | { |
13576453 KM |
678 | register u_long *p; |
679 | register caddr_t cp; | |
680 | register long t1; | |
681 | caddr_t bpos, dpos, cp2; | |
682 | u_long xid; | |
683 | int error = 0; | |
684 | struct mbuf *mreq, *mrep, *md, *mb, *mb2; | |
a2907882 KM |
685 | struct nfsmount *nmp; |
686 | long len, retlen, tsiz; | |
687 | ||
54fb9dc2 | 688 | nmp = VFSTONFS(vp->v_mount); |
a2907882 | 689 | tsiz = uiop->uio_resid; |
a2907882 KM |
690 | while (tsiz > 0) { |
691 | nfsstats.rpccnt[NFSPROC_READ]++; | |
692 | len = (tsiz > nmp->nm_rsize) ? nmp->nm_rsize : tsiz; | |
693 | nfsm_reqhead(nfs_procids[NFSPROC_READ], cred, NFSX_FH+NFSX_UNSIGNED*3); | |
694 | nfsm_fhtom(vp); | |
695 | nfsm_build(p, u_long *, NFSX_UNSIGNED*3); | |
f8428623 | 696 | *p++ = txdr_unsigned(uiop->uio_offset); |
a2907882 KM |
697 | *p++ = txdr_unsigned(len); |
698 | *p = 0; | |
d8792713 | 699 | nfsm_request(vp, NFSPROC_READ, procp, 1); |
a2907882 KM |
700 | nfsm_loadattr(vp, (struct vattr *)0); |
701 | nfsm_strsiz(retlen, nmp->nm_rsize); | |
702 | nfsm_mtouio(uiop, retlen); | |
703 | m_freem(mrep); | |
a2907882 KM |
704 | if (retlen < len) |
705 | tsiz = 0; | |
706 | else | |
707 | tsiz -= len; | |
708 | } | |
709 | nfsmout: | |
a2907882 KM |
710 | return (error); |
711 | } | |
712 | ||
713 | /* | |
714 | * nfs write call | |
715 | */ | |
f0f1cbaa | 716 | nfs_writerpc(vp, uiop, cred, procp) |
13576453 | 717 | register struct vnode *vp; |
a2907882 | 718 | struct uio *uiop; |
a2907882 | 719 | struct ucred *cred; |
f0f1cbaa | 720 | struct proc *procp; |
a2907882 | 721 | { |
13576453 KM |
722 | register u_long *p; |
723 | register caddr_t cp; | |
724 | register long t1; | |
725 | caddr_t bpos, dpos; | |
726 | u_long xid; | |
727 | int error = 0; | |
728 | struct mbuf *mreq, *mrep, *md, *mb, *mb2; | |
a2907882 KM |
729 | struct nfsmount *nmp; |
730 | long len, tsiz; | |
a2907882 | 731 | |
54fb9dc2 | 732 | nmp = VFSTONFS(vp->v_mount); |
a2907882 | 733 | tsiz = uiop->uio_resid; |
a2907882 KM |
734 | while (tsiz > 0) { |
735 | nfsstats.rpccnt[NFSPROC_WRITE]++; | |
736 | len = (tsiz > nmp->nm_wsize) ? nmp->nm_wsize : tsiz; | |
737 | nfsm_reqhead(nfs_procids[NFSPROC_WRITE], cred, | |
738 | NFSX_FH+NFSX_UNSIGNED*4); | |
739 | nfsm_fhtom(vp); | |
740 | nfsm_build(p, u_long *, NFSX_UNSIGNED*4); | |
f8428623 | 741 | *(p+1) = txdr_unsigned(uiop->uio_offset); |
a2907882 KM |
742 | *(p+3) = txdr_unsigned(len); |
743 | nfsm_uiotom(uiop, len); | |
d8792713 | 744 | nfsm_request(vp, NFSPROC_WRITE, procp, 1); |
a2907882 KM |
745 | nfsm_loadattr(vp, (struct vattr *)0); |
746 | m_freem(mrep); | |
747 | tsiz -= len; | |
a2907882 KM |
748 | } |
749 | nfsmout: | |
a2907882 KM |
750 | return (error); |
751 | } | |
752 | ||
f67785e5 KM |
753 | /* |
754 | * nfs mknod call | |
7c15c5df KM |
755 | * This is a kludge. Use a create rpc but with the IFMT bits of the mode |
756 | * set to specify the file type and the size field for rdev. | |
f67785e5 KM |
757 | */ |
758 | /* ARGSUSED */ | |
759 | nfs_mknod(ndp, vap, cred) | |
760 | struct nameidata *ndp; | |
761 | struct ucred *cred; | |
7c15c5df | 762 | register struct vattr *vap; |
f67785e5 | 763 | { |
7c15c5df KM |
764 | register struct nfsv2_sattr *sp; |
765 | register u_long *p; | |
766 | register caddr_t cp; | |
767 | register long t1, t2; | |
768 | caddr_t bpos, dpos; | |
769 | u_long xid; | |
770 | int error = 0; | |
771 | struct mbuf *mreq, *mrep, *md, *mb, *mb2; | |
772 | u_long rdev; | |
f67785e5 | 773 | |
7c15c5df KM |
774 | if (vap->va_type == VCHR || vap->va_type == VBLK) |
775 | rdev = txdr_unsigned(vap->va_rdev); | |
776 | #ifdef FIFO | |
777 | else if (vap->va_type == VFIFO) | |
778 | rdev = 0xffffffff; | |
779 | #endif /* FIFO */ | |
780 | else { | |
781 | VOP_ABORTOP(ndp); | |
66955caf | 782 | vput(ndp->ni_dvp); |
7c15c5df KM |
783 | return (EOPNOTSUPP); |
784 | } | |
785 | nfsstats.rpccnt[NFSPROC_CREATE]++; | |
786 | nfsm_reqhead(nfs_procids[NFSPROC_CREATE], ndp->ni_cred, | |
787 | NFSX_FH+NFSX_UNSIGNED+nfsm_rndup(ndp->ni_dent.d_namlen)+NFSX_SATTR); | |
788 | nfsm_fhtom(ndp->ni_dvp); | |
789 | nfsm_strtom(ndp->ni_dent.d_name, ndp->ni_dent.d_namlen, NFS_MAXNAMLEN); | |
790 | nfsm_build(sp, struct nfsv2_sattr *, NFSX_SATTR); | |
791 | sp->sa_mode = vtonfs_mode(vap->va_type, vap->va_mode); | |
792 | sp->sa_uid = txdr_unsigned(ndp->ni_cred->cr_uid); | |
793 | sp->sa_gid = txdr_unsigned(ndp->ni_cred->cr_gid); | |
794 | sp->sa_size = rdev; | |
795 | /* or should these be VNOVAL ?? */ | |
796 | txdr_time(&vap->va_atime, &sp->sa_atime); | |
797 | txdr_time(&vap->va_mtime, &sp->sa_mtime); | |
d8792713 | 798 | nfsm_request(ndp->ni_dvp, NFSPROC_CREATE, u.u_procp, 1); |
7c15c5df KM |
799 | nfsm_reqdone; |
800 | VTONFS(ndp->ni_dvp)->n_flag |= NMODIFIED; | |
801 | nfs_nput(ndp->ni_dvp); | |
802 | return (error); | |
f67785e5 KM |
803 | } |
804 | ||
a2907882 KM |
805 | /* |
806 | * nfs file create call | |
807 | */ | |
808 | nfs_create(ndp, vap) | |
809 | register struct nameidata *ndp; | |
810 | register struct vattr *vap; | |
811 | { | |
9238aa59 | 812 | register struct nfsv2_sattr *sp; |
13576453 KM |
813 | register u_long *p; |
814 | register caddr_t cp; | |
815 | register long t1, t2; | |
816 | caddr_t bpos, dpos, cp2; | |
817 | u_long xid; | |
818 | int error = 0; | |
819 | struct mbuf *mreq, *mrep, *md, *mb, *mb2; | |
a2907882 KM |
820 | |
821 | nfsstats.rpccnt[NFSPROC_CREATE]++; | |
822 | nfsm_reqhead(nfs_procids[NFSPROC_CREATE], ndp->ni_cred, | |
823 | NFSX_FH+NFSX_UNSIGNED+nfsm_rndup(ndp->ni_dent.d_namlen)+NFSX_SATTR); | |
824 | nfsm_fhtom(ndp->ni_dvp); | |
825 | nfsm_strtom(ndp->ni_dent.d_name, ndp->ni_dent.d_namlen, NFS_MAXNAMLEN); | |
9238aa59 | 826 | nfsm_build(sp, struct nfsv2_sattr *, NFSX_SATTR); |
1c89915d | 827 | sp->sa_mode = vtonfs_mode(vap->va_type, vap->va_mode); |
9238aa59 RM |
828 | sp->sa_uid = txdr_unsigned(ndp->ni_cred->cr_uid); |
829 | sp->sa_gid = txdr_unsigned(ndp->ni_cred->cr_gid); | |
830 | sp->sa_size = txdr_unsigned(0); | |
a2907882 | 831 | /* or should these be VNOVAL ?? */ |
9238aa59 RM |
832 | txdr_time(&vap->va_atime, &sp->sa_atime); |
833 | txdr_time(&vap->va_mtime, &sp->sa_mtime); | |
d8792713 | 834 | nfsm_request(ndp->ni_dvp, NFSPROC_CREATE, u.u_procp, 1); |
a2907882 KM |
835 | nfsm_mtofh(ndp->ni_dvp, ndp->ni_vp); |
836 | nfsm_reqdone; | |
f0f1cbaa | 837 | VTONFS(ndp->ni_dvp)->n_flag |= NMODIFIED; |
a2907882 KM |
838 | nfs_nput(ndp->ni_dvp); |
839 | return (error); | |
840 | } | |
841 | ||
842 | /* | |
843 | * nfs file remove call | |
f0f1cbaa KM |
844 | * To try and make nfs semantics closer to ufs semantics, a file that has |
845 | * other processes using the vnode is renamed instead of removed and then | |
ffe6f482 | 846 | * removed later on the last close. |
f0f1cbaa | 847 | * - If v_usecount > 1 |
ffe6f482 KM |
848 | * If a rename is not already in the works |
849 | * call nfs_sillyrename() to set it up | |
850 | * else | |
851 | * do the remove rpc | |
a2907882 KM |
852 | */ |
853 | nfs_remove(ndp) | |
854 | register struct nameidata *ndp; | |
855 | { | |
ffe6f482 KM |
856 | register struct vnode *vp = ndp->ni_vp; |
857 | register struct nfsnode *np = VTONFS(ndp->ni_vp); | |
13576453 KM |
858 | register u_long *p; |
859 | register caddr_t cp; | |
860 | register long t1, t2; | |
861 | caddr_t bpos, dpos; | |
862 | u_long xid; | |
863 | int error = 0; | |
864 | struct mbuf *mreq, *mrep, *md, *mb, *mb2; | |
a2907882 | 865 | |
1f7e9641 | 866 | if (vp->v_usecount > 1) { |
ffe6f482 KM |
867 | if (!np->n_sillyrename) |
868 | error = nfs_sillyrename(ndp, REMOVE); | |
869 | } else { | |
a2907882 KM |
870 | nfsstats.rpccnt[NFSPROC_REMOVE]++; |
871 | nfsm_reqhead(nfs_procids[NFSPROC_REMOVE], ndp->ni_cred, | |
872 | NFSX_FH+NFSX_UNSIGNED+nfsm_rndup(ndp->ni_dent.d_namlen)); | |
873 | nfsm_fhtom(ndp->ni_dvp); | |
874 | nfsm_strtom(ndp->ni_dent.d_name, ndp->ni_dent.d_namlen, NFS_MAXNAMLEN); | |
d8792713 | 875 | nfsm_request(ndp->ni_dvp, NFSPROC_REMOVE, u.u_procp, 1); |
a2907882 | 876 | nfsm_reqdone; |
f0f1cbaa | 877 | VTONFS(ndp->ni_dvp)->n_flag |= NMODIFIED; |
e8540f59 KM |
878 | /* |
879 | * Kludge City: If the first reply to the remove rpc is lost.. | |
880 | * the reply to the retransmitted request will be ENOENT | |
881 | * since the file was in fact removed | |
882 | * Therefore, we cheat and return success. | |
883 | */ | |
884 | if (error == ENOENT) | |
885 | error = 0; | |
a2907882 | 886 | } |
86dea069 | 887 | np->n_attrstamp = 0; |
f5f6c13e KM |
888 | if (ndp->ni_dvp == vp) |
889 | vrele(vp); | |
a2907882 | 890 | else |
f5f6c13e KM |
891 | nfs_nput(ndp->ni_dvp); |
892 | nfs_nput(vp); | |
a2907882 KM |
893 | return (error); |
894 | } | |
895 | ||
896 | /* | |
897 | * nfs file remove rpc called from nfs_inactive | |
898 | */ | |
899 | nfs_removeit(ndp) | |
900 | register struct nameidata *ndp; | |
901 | { | |
13576453 KM |
902 | register u_long *p; |
903 | register caddr_t cp; | |
904 | register long t1, t2; | |
905 | caddr_t bpos, dpos; | |
906 | u_long xid; | |
907 | int error = 0; | |
908 | struct mbuf *mreq, *mrep, *md, *mb, *mb2; | |
a2907882 KM |
909 | |
910 | nfsstats.rpccnt[NFSPROC_REMOVE]++; | |
911 | nfsm_reqhead(nfs_procids[NFSPROC_REMOVE], ndp->ni_cred, | |
912 | NFSX_FH+NFSX_UNSIGNED+nfsm_rndup(ndp->ni_dent.d_namlen)); | |
913 | nfsm_fhtom(ndp->ni_dvp); | |
914 | nfsm_strtom(ndp->ni_dent.d_name, ndp->ni_dent.d_namlen, NFS_MAXNAMLEN); | |
d8792713 | 915 | nfsm_request(ndp->ni_dvp, NFSPROC_REMOVE, u.u_procp, 1); |
a2907882 | 916 | nfsm_reqdone; |
f0f1cbaa | 917 | VTONFS(ndp->ni_dvp)->n_flag |= NMODIFIED; |
a2907882 KM |
918 | return (error); |
919 | } | |
920 | ||
921 | /* | |
922 | * nfs file rename call | |
923 | */ | |
924 | nfs_rename(sndp, tndp) | |
925 | register struct nameidata *sndp, *tndp; | |
926 | { | |
13576453 KM |
927 | register u_long *p; |
928 | register caddr_t cp; | |
929 | register long t1, t2; | |
930 | caddr_t bpos, dpos; | |
931 | u_long xid; | |
932 | int error = 0; | |
933 | struct mbuf *mreq, *mrep, *md, *mb, *mb2; | |
a2907882 KM |
934 | |
935 | nfsstats.rpccnt[NFSPROC_RENAME]++; | |
936 | nfsm_reqhead(nfs_procids[NFSPROC_RENAME], tndp->ni_cred, | |
937 | (NFSX_FH+NFSX_UNSIGNED)*2+nfsm_rndup(sndp->ni_dent.d_namlen)+ | |
938 | nfsm_rndup(tndp->ni_dent.d_namlen)); /* or sndp->ni_cred?*/ | |
939 | nfsm_fhtom(sndp->ni_dvp); | |
940 | nfsm_strtom(sndp->ni_dent.d_name,sndp->ni_dent.d_namlen,NFS_MAXNAMLEN); | |
941 | nfsm_fhtom(tndp->ni_dvp); | |
942 | nfsm_strtom(tndp->ni_dent.d_name,tndp->ni_dent.d_namlen,NFS_MAXNAMLEN); | |
d8792713 | 943 | nfsm_request(sndp->ni_dvp, NFSPROC_RENAME, u.u_procp, 1); |
a2907882 | 944 | nfsm_reqdone; |
f0f1cbaa KM |
945 | VTONFS(sndp->ni_dvp)->n_flag |= NMODIFIED; |
946 | VTONFS(tndp->ni_dvp)->n_flag |= NMODIFIED; | |
a2907882 KM |
947 | if (sndp->ni_vp->v_type == VDIR) { |
948 | if (tndp->ni_vp != NULL && tndp->ni_vp->v_type == VDIR) | |
949 | cache_purge(tndp->ni_dvp); | |
950 | cache_purge(sndp->ni_dvp); | |
951 | } | |
66955caf | 952 | VOP_ABORTOP(tndp); |
639383fa KM |
953 | if (tndp->ni_dvp == tndp->ni_vp) |
954 | vrele(tndp->ni_dvp); | |
955 | else | |
956 | vput(tndp->ni_dvp); | |
66955caf KM |
957 | if (tndp->ni_vp) |
958 | vput(tndp->ni_vp); | |
959 | VOP_ABORTOP(sndp); | |
960 | vrele(sndp->ni_dvp); | |
961 | vrele(sndp->ni_vp); | |
f5f6c13e KM |
962 | /* |
963 | * Kludge: Map ENOENT => 0 assuming that it is a reply to a retry. | |
964 | */ | |
965 | if (error == ENOENT) | |
966 | error = 0; | |
a2907882 KM |
967 | return (error); |
968 | } | |
969 | ||
970 | /* | |
f0f1cbaa | 971 | * nfs file rename rpc called from nfs_remove() above |
a2907882 KM |
972 | */ |
973 | nfs_renameit(sndp, tndp) | |
974 | register struct nameidata *sndp, *tndp; | |
975 | { | |
13576453 KM |
976 | register u_long *p; |
977 | register caddr_t cp; | |
978 | register long t1, t2; | |
979 | caddr_t bpos, dpos; | |
980 | u_long xid; | |
981 | int error = 0; | |
982 | struct mbuf *mreq, *mrep, *md, *mb, *mb2; | |
a2907882 KM |
983 | |
984 | nfsstats.rpccnt[NFSPROC_RENAME]++; | |
985 | nfsm_reqhead(nfs_procids[NFSPROC_RENAME], tndp->ni_cred, | |
986 | (NFSX_FH+NFSX_UNSIGNED)*2+nfsm_rndup(sndp->ni_dent.d_namlen)+ | |
987 | nfsm_rndup(tndp->ni_dent.d_namlen)); /* or sndp->ni_cred?*/ | |
988 | nfsm_fhtom(sndp->ni_dvp); | |
989 | nfsm_strtom(sndp->ni_dent.d_name,sndp->ni_dent.d_namlen,NFS_MAXNAMLEN); | |
990 | nfsm_fhtom(tndp->ni_dvp); | |
991 | nfsm_strtom(tndp->ni_dent.d_name,tndp->ni_dent.d_namlen,NFS_MAXNAMLEN); | |
d8792713 | 992 | nfsm_request(sndp->ni_dvp, NFSPROC_RENAME, u.u_procp, 1); |
a2907882 | 993 | nfsm_reqdone; |
f0f1cbaa KM |
994 | VTONFS(sndp->ni_dvp)->n_flag |= NMODIFIED; |
995 | VTONFS(tndp->ni_dvp)->n_flag |= NMODIFIED; | |
a2907882 KM |
996 | return (error); |
997 | } | |
998 | ||
999 | /* | |
1000 | * nfs hard link create call | |
1001 | */ | |
1002 | nfs_link(vp, ndp) | |
13576453 | 1003 | register struct vnode *vp; |
a2907882 KM |
1004 | register struct nameidata *ndp; |
1005 | { | |
13576453 KM |
1006 | register u_long *p; |
1007 | register caddr_t cp; | |
1008 | register long t1, t2; | |
1009 | caddr_t bpos, dpos; | |
1010 | u_long xid; | |
1011 | int error = 0; | |
1012 | struct mbuf *mreq, *mrep, *md, *mb, *mb2; | |
a2907882 | 1013 | |
36c3043b KM |
1014 | if (ndp->ni_dvp != vp) |
1015 | nfs_lock(vp); | |
a2907882 KM |
1016 | nfsstats.rpccnt[NFSPROC_LINK]++; |
1017 | nfsm_reqhead(nfs_procids[NFSPROC_LINK], ndp->ni_cred, | |
1018 | NFSX_FH*2+NFSX_UNSIGNED+nfsm_rndup(ndp->ni_dent.d_namlen)); | |
1019 | nfsm_fhtom(vp); | |
1020 | nfsm_fhtom(ndp->ni_dvp); | |
1021 | nfsm_strtom(ndp->ni_dent.d_name, ndp->ni_dent.d_namlen, NFS_MAXNAMLEN); | |
d8792713 | 1022 | nfsm_request(vp, NFSPROC_LINK, u.u_procp, 1); |
a2907882 | 1023 | nfsm_reqdone; |
86dea069 | 1024 | VTONFS(vp)->n_attrstamp = 0; |
f0f1cbaa | 1025 | VTONFS(ndp->ni_dvp)->n_flag |= NMODIFIED; |
36c3043b KM |
1026 | if (ndp->ni_dvp != vp) |
1027 | nfs_unlock(vp); | |
a2907882 | 1028 | nfs_nput(ndp->ni_dvp); |
f5f6c13e KM |
1029 | /* |
1030 | * Kludge: Map EEXIST => 0 assuming that it is a reply to a retry. | |
1031 | */ | |
1032 | if (error == EEXIST) | |
1033 | error = 0; | |
a2907882 KM |
1034 | return (error); |
1035 | } | |
1036 | ||
1037 | /* | |
1038 | * nfs symbolic link create call | |
1039 | */ | |
1040 | nfs_symlink(ndp, vap, nm) | |
1041 | struct nameidata *ndp; | |
1042 | struct vattr *vap; | |
1043 | char *nm; /* is this the path ?? */ | |
1044 | { | |
9238aa59 | 1045 | register struct nfsv2_sattr *sp; |
13576453 KM |
1046 | register u_long *p; |
1047 | register caddr_t cp; | |
1048 | register long t1, t2; | |
1049 | caddr_t bpos, dpos; | |
1050 | u_long xid; | |
1051 | int error = 0; | |
1052 | struct mbuf *mreq, *mrep, *md, *mb, *mb2; | |
a2907882 KM |
1053 | |
1054 | nfsstats.rpccnt[NFSPROC_SYMLINK]++; | |
1055 | nfsm_reqhead(nfs_procids[NFSPROC_SYMLINK], ndp->ni_cred, | |
1056 | NFSX_FH+NFSX_UNSIGNED+nfsm_rndup(ndp->ni_dent.d_namlen)+NFSX_UNSIGNED); | |
1057 | nfsm_fhtom(ndp->ni_dvp); | |
1058 | nfsm_strtom(ndp->ni_dent.d_name, ndp->ni_dent.d_namlen, NFS_MAXNAMLEN); | |
1059 | nfsm_strtom(nm, strlen(nm), NFS_MAXPATHLEN); | |
9238aa59 RM |
1060 | nfsm_build(sp, struct nfsv2_sattr *, NFSX_SATTR); |
1061 | sp->sa_mode = vtonfs_mode(VLNK, vap->va_mode); | |
1062 | sp->sa_uid = txdr_unsigned(ndp->ni_cred->cr_uid); | |
1063 | sp->sa_gid = txdr_unsigned(ndp->ni_cred->cr_gid); | |
1064 | sp->sa_size = txdr_unsigned(VNOVAL); | |
f5f6c13e | 1065 | txdr_time(&vap->va_atime, &sp->sa_atime); /* or VNOVAL ?? */ |
9238aa59 | 1066 | txdr_time(&vap->va_mtime, &sp->sa_mtime); /* or VNOVAL ?? */ |
d8792713 | 1067 | nfsm_request(ndp->ni_dvp, NFSPROC_SYMLINK, u.u_procp, 1); |
a2907882 | 1068 | nfsm_reqdone; |
f0f1cbaa | 1069 | VTONFS(ndp->ni_dvp)->n_flag |= NMODIFIED; |
a2907882 | 1070 | nfs_nput(ndp->ni_dvp); |
f5f6c13e KM |
1071 | /* |
1072 | * Kludge: Map EEXIST => 0 assuming that it is a reply to a retry. | |
1073 | */ | |
1074 | if (error == EEXIST) | |
1075 | error = 0; | |
a2907882 KM |
1076 | return (error); |
1077 | } | |
1078 | ||
1079 | /* | |
1080 | * nfs make dir call | |
1081 | */ | |
1082 | nfs_mkdir(ndp, vap) | |
13576453 | 1083 | register struct nameidata *ndp; |
a2907882 KM |
1084 | struct vattr *vap; |
1085 | { | |
9238aa59 | 1086 | register struct nfsv2_sattr *sp; |
13576453 KM |
1087 | register u_long *p; |
1088 | register caddr_t cp; | |
1089 | register long t1, t2; | |
f0f1cbaa | 1090 | register int len; |
13576453 KM |
1091 | caddr_t bpos, dpos, cp2; |
1092 | u_long xid; | |
f0f1cbaa | 1093 | int error = 0, firsttry = 1; |
13576453 | 1094 | struct mbuf *mreq, *mrep, *md, *mb, *mb2; |
a2907882 | 1095 | |
f0f1cbaa | 1096 | len = ndp->ni_dent.d_namlen; |
a2907882 KM |
1097 | nfsstats.rpccnt[NFSPROC_MKDIR]++; |
1098 | nfsm_reqhead(nfs_procids[NFSPROC_MKDIR], ndp->ni_cred, | |
f0f1cbaa | 1099 | NFSX_FH+NFSX_UNSIGNED+nfsm_rndup(len)+NFSX_SATTR); |
a2907882 | 1100 | nfsm_fhtom(ndp->ni_dvp); |
f0f1cbaa | 1101 | nfsm_strtom(ndp->ni_dent.d_name, len, NFS_MAXNAMLEN); |
9238aa59 RM |
1102 | nfsm_build(sp, struct nfsv2_sattr *, NFSX_SATTR); |
1103 | sp->sa_mode = vtonfs_mode(VDIR, vap->va_mode); | |
1104 | sp->sa_uid = txdr_unsigned(ndp->ni_cred->cr_uid); | |
1105 | sp->sa_gid = txdr_unsigned(ndp->ni_cred->cr_gid); | |
1106 | sp->sa_size = txdr_unsigned(VNOVAL); | |
f5f6c13e | 1107 | txdr_time(&vap->va_atime, &sp->sa_atime); /* or VNOVAL ?? */ |
9238aa59 | 1108 | txdr_time(&vap->va_mtime, &sp->sa_mtime); /* or VNOVAL ?? */ |
d8792713 | 1109 | nfsm_request(ndp->ni_dvp, NFSPROC_MKDIR, u.u_procp, 1); |
a2907882 KM |
1110 | nfsm_mtofh(ndp->ni_dvp, ndp->ni_vp); |
1111 | nfsm_reqdone; | |
f0f1cbaa | 1112 | VTONFS(ndp->ni_dvp)->n_flag |= NMODIFIED; |
f5f6c13e | 1113 | /* |
f0f1cbaa KM |
1114 | * Kludge: Map EEXIST => 0 assuming that you have a reply to a retry |
1115 | * if we can succeed in looking up the directory. | |
1116 | * "firsttry" is necessary since the macros may "goto nfsmout" which | |
1117 | * is above the if on errors. (Ugh) | |
f5f6c13e | 1118 | */ |
f0f1cbaa KM |
1119 | if (error == EEXIST && firsttry) { |
1120 | firsttry = 0; | |
f5f6c13e | 1121 | error = 0; |
f0f1cbaa KM |
1122 | nfsstats.rpccnt[NFSPROC_LOOKUP]++; |
1123 | ndp->ni_vp = NULL; | |
1124 | nfsm_reqhead(nfs_procids[NFSPROC_LOOKUP], ndp->ni_cred, | |
1125 | NFSX_FH+NFSX_UNSIGNED+nfsm_rndup(len)); | |
1126 | nfsm_fhtom(ndp->ni_dvp); | |
1127 | nfsm_strtom(ndp->ni_dent.d_name, len, NFS_MAXNAMLEN); | |
d8792713 | 1128 | nfsm_request(ndp->ni_dvp, NFSPROC_LOOKUP, u.u_procp, 1); |
f0f1cbaa KM |
1129 | nfsm_mtofh(ndp->ni_dvp, ndp->ni_vp); |
1130 | if (ndp->ni_vp->v_type != VDIR) { | |
1131 | vput(ndp->ni_vp); | |
1132 | error = EEXIST; | |
1133 | } | |
1134 | m_freem(mrep); | |
1135 | } | |
1136 | nfs_nput(ndp->ni_dvp); | |
a2907882 KM |
1137 | return (error); |
1138 | } | |
1139 | ||
1140 | /* | |
1141 | * nfs remove directory call | |
1142 | */ | |
1143 | nfs_rmdir(ndp) | |
1144 | register struct nameidata *ndp; | |
1145 | { | |
13576453 KM |
1146 | register u_long *p; |
1147 | register caddr_t cp; | |
1148 | register long t1, t2; | |
1149 | caddr_t bpos, dpos; | |
1150 | u_long xid; | |
1151 | int error = 0; | |
1152 | struct mbuf *mreq, *mrep, *md, *mb, *mb2; | |
a2907882 KM |
1153 | |
1154 | if (ndp->ni_dvp == ndp->ni_vp) { | |
1155 | vrele(ndp->ni_dvp); | |
1156 | nfs_nput(ndp->ni_dvp); | |
1157 | return (EINVAL); | |
1158 | } | |
a2907882 KM |
1159 | nfsstats.rpccnt[NFSPROC_RMDIR]++; |
1160 | nfsm_reqhead(nfs_procids[NFSPROC_RMDIR], ndp->ni_cred, | |
1161 | NFSX_FH+NFSX_UNSIGNED+nfsm_rndup(ndp->ni_dent.d_namlen)); | |
1162 | nfsm_fhtom(ndp->ni_dvp); | |
1163 | nfsm_strtom(ndp->ni_dent.d_name, ndp->ni_dent.d_namlen, NFS_MAXNAMLEN); | |
d8792713 | 1164 | nfsm_request(ndp->ni_dvp, NFSPROC_RMDIR, u.u_procp, 1); |
a2907882 | 1165 | nfsm_reqdone; |
f0f1cbaa | 1166 | VTONFS(ndp->ni_dvp)->n_flag |= NMODIFIED; |
9238aa59 RM |
1167 | cache_purge(ndp->ni_dvp); |
1168 | cache_purge(ndp->ni_vp); | |
9238aa59 RM |
1169 | nfs_nput(ndp->ni_vp); |
1170 | nfs_nput(ndp->ni_dvp); | |
f5f6c13e KM |
1171 | /* |
1172 | * Kludge: Map ENOENT => 0 assuming that you have a reply to a retry. | |
1173 | */ | |
1174 | if (error == ENOENT) | |
1175 | error = 0; | |
a2907882 KM |
1176 | return (error); |
1177 | } | |
1178 | ||
1179 | /* | |
1180 | * nfs readdir call | |
1181 | * Although cookie is defined as opaque, I translate it to/from net byte | |
1182 | * order so that it looks more sensible. This appears consistent with the | |
1183 | * Ultrix implementation of NFS. | |
1184 | */ | |
e49b1a6c | 1185 | nfs_readdir(vp, uiop, cred, eofflagp) |
13576453 | 1186 | register struct vnode *vp; |
a2907882 | 1187 | struct uio *uiop; |
a2907882 | 1188 | struct ucred *cred; |
e49b1a6c | 1189 | int *eofflagp; |
f0f1cbaa KM |
1190 | { |
1191 | register struct nfsnode *np = VTONFS(vp); | |
1192 | int tresid, error; | |
1193 | struct vattr vattr; | |
1194 | ||
1195 | if (vp->v_type != VDIR) | |
1196 | return (EPERM); | |
1197 | /* | |
1198 | * First, check for hit on the EOF offset cache | |
1199 | */ | |
1200 | if (uiop->uio_offset != 0 && uiop->uio_offset == np->n_direofoffset && | |
1201 | (np->n_flag & NMODIFIED) == 0 && | |
d8792713 | 1202 | nfs_dogetattr(vp, &vattr, cred, 0) == 0 && |
f0f1cbaa KM |
1203 | np->n_mtime == vattr.va_mtime.tv_sec) { |
1204 | *eofflagp = 1; | |
1205 | nfsstats.direofcache_hits++; | |
1206 | return (0); | |
1207 | } | |
1208 | ||
1209 | /* | |
1210 | * Call nfs_bioread() to do the real work. | |
1211 | */ | |
1212 | tresid = uiop->uio_resid; | |
1213 | error = nfs_bioread(vp, uiop, 0, cred); | |
1214 | ||
1215 | if (!error && uiop->uio_resid == tresid) { | |
1216 | *eofflagp = 1; | |
1217 | nfsstats.direofcache_misses++; | |
1218 | } else | |
1219 | *eofflagp = 0; | |
1220 | return (error); | |
1221 | } | |
1222 | ||
1223 | /* | |
1224 | * Readdir rpc call. | |
1225 | * Called from below the buffer cache by nfs_doio(). | |
1226 | */ | |
1227 | nfs_readdirrpc(vp, uiop, cred, procp) | |
1228 | register struct vnode *vp; | |
1229 | struct uio *uiop; | |
1230 | struct ucred *cred; | |
1231 | struct proc *procp; | |
a2907882 KM |
1232 | { |
1233 | register long len; | |
1234 | register struct direct *dp; | |
13576453 KM |
1235 | register u_long *p; |
1236 | register caddr_t cp; | |
1237 | register long t1; | |
f0f1cbaa | 1238 | long tlen, lastlen; |
13576453 KM |
1239 | caddr_t bpos, dpos, cp2; |
1240 | u_long xid; | |
1241 | int error = 0; | |
1242 | struct mbuf *mreq, *mrep, *md, *mb, *mb2; | |
a2907882 KM |
1243 | struct mbuf *md2; |
1244 | caddr_t dpos2; | |
1245 | int siz; | |
e49b1a6c | 1246 | int more_dirs = 1; |
a2907882 KM |
1247 | off_t off, savoff; |
1248 | struct direct *savdp; | |
e49b1a6c KM |
1249 | struct nfsmount *nmp; |
1250 | struct nfsnode *np = VTONFS(vp); | |
1251 | long tresid; | |
a2907882 | 1252 | |
54fb9dc2 | 1253 | nmp = VFSTONFS(vp->v_mount); |
e49b1a6c | 1254 | tresid = uiop->uio_resid; |
a2907882 | 1255 | /* |
e49b1a6c KM |
1256 | * Loop around doing readdir rpc's of size uio_resid or nm_rsize, |
1257 | * whichever is smaller, truncated to a multiple of DIRBLKSIZ. | |
f0f1cbaa | 1258 | * The stopping criteria is EOF or buffer full. |
a2907882 | 1259 | */ |
e49b1a6c KM |
1260 | while (more_dirs && uiop->uio_resid >= DIRBLKSIZ) { |
1261 | nfsstats.rpccnt[NFSPROC_READDIR]++; | |
1262 | nfsm_reqhead(nfs_procids[NFSPROC_READDIR], cred, xid); | |
1263 | nfsm_fhtom(vp); | |
1264 | nfsm_build(p, u_long *, 2*NFSX_UNSIGNED); | |
1265 | *p++ = txdr_unsigned(uiop->uio_offset); | |
1266 | *p = txdr_unsigned(((uiop->uio_resid > nmp->nm_rsize) ? | |
1267 | nmp->nm_rsize : uiop->uio_resid) & ~(DIRBLKSIZ-1)); | |
d8792713 | 1268 | nfsm_request(vp, NFSPROC_READDIR, procp, 0); |
e49b1a6c KM |
1269 | siz = 0; |
1270 | nfsm_disect(p, u_long *, NFSX_UNSIGNED); | |
1271 | more_dirs = fxdr_unsigned(int, *p); | |
1272 | ||
1273 | /* Save the position so that we can do nfsm_mtouio() later */ | |
1274 | dpos2 = dpos; | |
1275 | md2 = md; | |
1276 | ||
1277 | /* loop thru the dir entries, doctoring them to 4bsd form */ | |
f0f1cbaa | 1278 | off = uiop->uio_offset; |
7c15c5df KM |
1279 | #ifdef lint |
1280 | dp = (struct direct *)0; | |
1281 | #endif /* lint */ | |
e49b1a6c KM |
1282 | while (more_dirs && siz < uiop->uio_resid) { |
1283 | savoff = off; /* Hold onto offset and dp */ | |
1284 | savdp = dp; | |
1285 | nfsm_disecton(p, u_long *, 2*NFSX_UNSIGNED); | |
1286 | dp = (struct direct *)p; | |
1287 | dp->d_ino = fxdr_unsigned(u_long, *p++); | |
1288 | len = fxdr_unsigned(int, *p); | |
1289 | if (len <= 0 || len > NFS_MAXNAMLEN) { | |
1290 | error = EBADRPC; | |
1291 | m_freem(mrep); | |
1292 | goto nfsmout; | |
1293 | } | |
1294 | dp->d_namlen = (u_short)len; | |
1295 | nfsm_adv(len); /* Point past name */ | |
1296 | tlen = nfsm_rndup(len); | |
1297 | /* | |
1298 | * This should not be necessary, but some servers have | |
1299 | * broken XDR such that these bytes are not null filled. | |
1300 | */ | |
1301 | if (tlen != len) { | |
1302 | *dpos = '\0'; /* Null-terminate */ | |
1303 | nfsm_adv(tlen - len); | |
1304 | len = tlen; | |
1305 | } | |
1306 | nfsm_disecton(p, u_long *, 2*NFSX_UNSIGNED); | |
1307 | off = fxdr_unsigned(off_t, *p); | |
1308 | *p++ = 0; /* Ensures null termination of name */ | |
1309 | more_dirs = fxdr_unsigned(int, *p); | |
1310 | dp->d_reclen = len+4*NFSX_UNSIGNED; | |
1311 | siz += dp->d_reclen; | |
1312 | } | |
1313 | /* | |
1314 | * If at end of rpc data, get the eof boolean | |
1315 | */ | |
1316 | if (!more_dirs) { | |
1317 | nfsm_disecton(p, u_long *, NFSX_UNSIGNED); | |
1318 | more_dirs = (fxdr_unsigned(int, *p) == 0); | |
1319 | ||
1320 | /* | |
1321 | * If at EOF, cache directory offset | |
1322 | */ | |
f0f1cbaa | 1323 | if (!more_dirs) |
e49b1a6c | 1324 | np->n_direofoffset = off; |
e49b1a6c KM |
1325 | } |
1326 | /* | |
1327 | * If there is too much to fit in the data buffer, use savoff and | |
1328 | * savdp to trim off the last record. | |
1329 | * --> we are not at eof | |
1330 | */ | |
1331 | if (siz > uiop->uio_resid) { | |
1332 | off = savoff; | |
1333 | siz -= dp->d_reclen; | |
1334 | dp = savdp; | |
1335 | more_dirs = 0; /* Paranoia */ | |
1336 | } | |
1337 | if (siz > 0) { | |
f0f1cbaa | 1338 | lastlen = dp->d_reclen; |
e49b1a6c KM |
1339 | md = md2; |
1340 | dpos = dpos2; | |
1341 | nfsm_mtouio(uiop, siz); | |
1342 | uiop->uio_offset = off; | |
1343 | } else | |
1344 | more_dirs = 0; /* Ugh, never happens, but in case.. */ | |
1345 | m_freem(mrep); | |
a2907882 | 1346 | } |
f0f1cbaa KM |
1347 | /* |
1348 | * Fill last record, iff any, out to a multiple of DIRBLKSIZ | |
1349 | * by increasing d_reclen for the last record. | |
1350 | */ | |
1351 | if (uiop->uio_resid < tresid) { | |
1352 | len = uiop->uio_resid & (DIRBLKSIZ - 1); | |
1353 | if (len > 0) { | |
1354 | dp = (struct direct *) | |
1355 | (uiop->uio_iov->iov_base - lastlen); | |
1356 | dp->d_reclen += len; | |
1357 | uiop->uio_iov->iov_base += len; | |
1358 | uiop->uio_iov->iov_len -= len; | |
1359 | uiop->uio_resid -= len; | |
1360 | } | |
c79a85cd | 1361 | } |
f0f1cbaa | 1362 | nfsmout: |
a2907882 KM |
1363 | return (error); |
1364 | } | |
1365 | ||
13576453 | 1366 | static char hextoasc[] = "0123456789abcdef"; |
a2907882 KM |
1367 | |
1368 | /* | |
1369 | * Silly rename. To make the NFS filesystem that is stateless look a little | |
1370 | * more like the "ufs" a remove of an active vnode is translated to a rename | |
1371 | * to a funny looking filename that is removed by nfs_inactive on the | |
1372 | * nfsnode. There is the potential for another process on a different client | |
1373 | * to create the same funny name between the nfs_lookitup() fails and the | |
1374 | * nfs_rename() completes, but... | |
1375 | */ | |
1376 | nfs_sillyrename(ndp, flag) | |
13576453 | 1377 | register struct nameidata *ndp; |
a2907882 KM |
1378 | int flag; |
1379 | { | |
1380 | register struct nfsnode *np; | |
1381 | register struct sillyrename *sp; | |
1382 | register struct nameidata *tndp; | |
1383 | int error; | |
1384 | short pid; | |
1385 | ||
1386 | np = VTONFS(ndp->ni_dvp); | |
ffe6f482 | 1387 | cache_purge(ndp->ni_dvp); |
a2907882 | 1388 | MALLOC(sp, struct sillyrename *, sizeof (struct sillyrename), |
9238aa59 | 1389 | M_TEMP, M_WAITOK); |
a2907882 KM |
1390 | sp->s_flag = flag; |
1391 | bcopy((caddr_t)&np->n_fh, (caddr_t)&sp->s_fh, NFSX_FH); | |
1392 | np = VTONFS(ndp->ni_vp); | |
1393 | tndp = &sp->s_namei; | |
1394 | tndp->ni_cred = crdup(ndp->ni_cred); | |
1395 | ||
1396 | /* Fudge together a funny name */ | |
1397 | pid = u.u_procp->p_pid; | |
1398 | bcopy(".nfsAxxxx4.4", tndp->ni_dent.d_name, 13); | |
1399 | tndp->ni_dent.d_namlen = 12; | |
13576453 KM |
1400 | tndp->ni_dent.d_name[8] = hextoasc[pid & 0xf]; |
1401 | tndp->ni_dent.d_name[7] = hextoasc[(pid >> 4) & 0xf]; | |
1402 | tndp->ni_dent.d_name[6] = hextoasc[(pid >> 8) & 0xf]; | |
1403 | tndp->ni_dent.d_name[5] = hextoasc[(pid >> 12) & 0xf]; | |
a2907882 KM |
1404 | |
1405 | /* Try lookitups until we get one that isn't there */ | |
1406 | while (nfs_lookitup(ndp->ni_dvp, tndp, (nfsv2fh_t *)0) == 0) { | |
1407 | tndp->ni_dent.d_name[4]++; | |
1408 | if (tndp->ni_dent.d_name[4] > 'z') { | |
1409 | error = EINVAL; | |
1410 | goto bad; | |
1411 | } | |
1412 | } | |
1413 | if (error = nfs_renameit(ndp, tndp)) | |
1414 | goto bad; | |
1415 | nfs_lookitup(ndp->ni_dvp, tndp, &np->n_fh); | |
1416 | np->n_sillyrename = sp; | |
1417 | return (0); | |
1418 | bad: | |
9238aa59 | 1419 | crfree(tndp->ni_cred); |
a2907882 KM |
1420 | free((caddr_t)sp, M_TEMP); |
1421 | return (error); | |
1422 | } | |
1423 | ||
1424 | /* | |
1425 | * Look up a file name for silly rename stuff. | |
1426 | * Just like nfs_lookup() except that it doesn't load returned values | |
1427 | * into the nfsnode table. | |
1428 | * If fhp != NULL it copies the returned file handle out | |
1429 | */ | |
1430 | nfs_lookitup(vp, ndp, fhp) | |
1431 | register struct vnode *vp; | |
1432 | register struct nameidata *ndp; | |
1433 | nfsv2fh_t *fhp; | |
1434 | { | |
13576453 KM |
1435 | register u_long *p; |
1436 | register caddr_t cp; | |
1437 | register long t1, t2; | |
1438 | caddr_t bpos, dpos, cp2; | |
1439 | u_long xid; | |
1440 | int error = 0; | |
1441 | struct mbuf *mreq, *mrep, *md, *mb, *mb2; | |
a2907882 KM |
1442 | long len; |
1443 | ||
1444 | nfsstats.rpccnt[NFSPROC_LOOKUP]++; | |
1445 | ndp->ni_dvp = vp; | |
1446 | ndp->ni_vp = NULL; | |
1447 | len = ndp->ni_dent.d_namlen; | |
1448 | nfsm_reqhead(nfs_procids[NFSPROC_LOOKUP], ndp->ni_cred, NFSX_FH+NFSX_UNSIGNED+nfsm_rndup(len)); | |
1449 | nfsm_fhtom(vp); | |
1450 | nfsm_strtom(ndp->ni_dent.d_name, len, NFS_MAXNAMLEN); | |
d8792713 | 1451 | nfsm_request(vp, NFSPROC_LOOKUP, u.u_procp, 1); |
a2907882 KM |
1452 | if (fhp != NULL) { |
1453 | nfsm_disect(cp, caddr_t, NFSX_FH); | |
1454 | bcopy(cp, (caddr_t)fhp, NFSX_FH); | |
1455 | } | |
1456 | nfsm_reqdone; | |
1457 | return (error); | |
1458 | } | |
1459 | ||
1460 | /* | |
1461 | * Kludge City.. | |
1462 | * - make nfs_bmap() essentially a no-op that does no translation | |
f0f1cbaa | 1463 | * - do nfs_strategy() by faking physical I/O with nfs_readrpc/nfs_writerpc |
a2907882 KM |
1464 | * after mapping the physical addresses into Kernel Virtual space in the |
1465 | * nfsiobuf area. | |
1466 | * (Maybe I could use the process's page mapping, but I was concerned that | |
1467 | * Kernel Write might not be enabled and also figured copyout() would do | |
1468 | * a lot more work than bcopy() and also it currently happens in the | |
1469 | * context of the swapper process (2). | |
1470 | */ | |
1471 | nfs_bmap(vp, bn, vpp, bnp) | |
1472 | struct vnode *vp; | |
1473 | daddr_t bn; | |
1474 | struct vnode **vpp; | |
1475 | daddr_t *bnp; | |
1476 | { | |
1477 | if (vpp != NULL) | |
1478 | *vpp = vp; | |
1479 | if (bnp != NULL) | |
54fb9dc2 | 1480 | *bnp = bn * btodb(vp->v_mount->mnt_stat.f_bsize); |
a2907882 KM |
1481 | return (0); |
1482 | } | |
1483 | ||
1484 | /* | |
9238aa59 RM |
1485 | * Strategy routine for phys. i/o |
1486 | * If the biod's are running, queue a request | |
1487 | * otherwise just call nfs_doio() to get it done | |
a2907882 KM |
1488 | */ |
1489 | nfs_strategy(bp) | |
1490 | register struct buf *bp; | |
9238aa59 RM |
1491 | { |
1492 | register struct buf *dp; | |
ffe6f482 | 1493 | register int i; |
9238aa59 | 1494 | int error = 0; |
ffe6f482 | 1495 | int fnd = 0; |
9238aa59 | 1496 | |
f0f1cbaa KM |
1497 | /* |
1498 | * Set b_proc. It seems a bit silly to do it here, but since bread() | |
1499 | * doesn't set it, I will. | |
48531fd3 | 1500 | * Set b_proc == NULL for asynchronous ops, since these may still |
f0f1cbaa KM |
1501 | * be hanging about after the process terminates. |
1502 | */ | |
1c89915d KM |
1503 | if ((bp->b_flags & B_PHYS) == 0) { |
1504 | if (bp->b_flags & B_ASYNC) | |
1505 | bp->b_proc = (struct proc *)0; | |
1506 | else | |
1507 | bp->b_proc = u.u_procp; | |
1508 | } | |
9238aa59 | 1509 | /* |
48531fd3 | 1510 | * If the op is asynchronous and an i/o daemon is waiting |
9238aa59 | 1511 | * queue the request, wake it up and wait for completion |
48531fd3 | 1512 | * otherwise just do it ourselves. |
9238aa59 | 1513 | */ |
1c89915d KM |
1514 | if ((bp->b_flags & B_ASYNC) == 0 || nfs_numasync == 0) |
1515 | return (nfs_doio(bp)); | |
1516 | for (i = 0; i < NFS_MAXASYNCDAEMON; i++) { | |
1517 | if (nfs_iodwant[i]) { | |
ffe6f482 KM |
1518 | dp = &nfs_bqueue; |
1519 | if (dp->b_actf == NULL) { | |
1520 | dp->b_actl = bp; | |
1521 | bp->b_actf = dp; | |
1522 | } else { | |
1523 | dp->b_actf->b_actl = bp; | |
1524 | bp->b_actf = dp->b_actf; | |
1525 | } | |
1526 | dp->b_actf = bp; | |
1527 | bp->b_actl = dp; | |
1528 | fnd++; | |
ffe6f482 KM |
1529 | wakeup((caddr_t)&nfs_iodwant[i]); |
1530 | break; | |
9238aa59 | 1531 | } |
ffe6f482 KM |
1532 | } |
1533 | if (!fnd) | |
9238aa59 RM |
1534 | error = nfs_doio(bp); |
1535 | return (error); | |
1536 | } | |
1537 | ||
1538 | /* | |
1539 | * Fun and games with i/o | |
1540 | * Essentially play ubasetup() and disk interrupt service routine by | |
1541 | * mapping the data buffer into kernel virtual space and doing the | |
1542 | * nfs read or write rpc's from it. | |
f0f1cbaa KM |
1543 | * If the nfsiod's are not running, this is just called from nfs_strategy(), |
1544 | * otherwise it is called by the nfsiods to do what would normally be | |
9238aa59 RM |
1545 | * partially disk interrupt driven. |
1546 | */ | |
1547 | nfs_doio(bp) | |
1548 | register struct buf *bp; | |
a2907882 | 1549 | { |
a2907882 | 1550 | register struct uio *uiop; |
a2907882 | 1551 | register struct vnode *vp; |
ffe6f482 | 1552 | struct nfsnode *np; |
9238aa59 | 1553 | struct ucred *cr; |
a2907882 | 1554 | struct proc *rp; |
7848989c | 1555 | int error; |
a2907882 KM |
1556 | struct uio uio; |
1557 | struct iovec io; | |
4508742b | 1558 | #if !defined(hp300) && !defined(i386) |
7848989c KM |
1559 | register struct pte *pte, *ppte; |
1560 | register caddr_t vaddr; | |
1561 | int npf, npf2; | |
1562 | int reg, o; | |
1563 | caddr_t vbase; | |
1564 | unsigned v; | |
1565 | #endif | |
a2907882 KM |
1566 | |
1567 | vp = bp->b_vp; | |
8c379a26 | 1568 | np = VTONFS(vp); |
a2907882 KM |
1569 | uiop = &uio; |
1570 | uiop->uio_iov = &io; | |
1571 | uiop->uio_iovcnt = 1; | |
a2907882 | 1572 | uiop->uio_segflg = UIO_SYSSPACE; |
e8540f59 | 1573 | |
a2907882 | 1574 | /* |
9238aa59 RM |
1575 | * For phys i/o, map the b_addr into kernel virtual space using |
1576 | * the Nfsiomap pte's | |
1577 | * Also, add a temporary b_rcred for reading using the process's uid | |
1578 | * and a guess at a group | |
a2907882 | 1579 | */ |
9238aa59 | 1580 | if (bp->b_flags & B_PHYS) { |
e3f173b4 | 1581 | rp = (bp->b_flags & B_DIRTY) ? pageproc : bp->b_proc; |
1c89915d | 1582 | cr = crcopy(rp->p_ucred); |
4508742b | 1583 | #if defined(hp300) || defined(i386) |
7848989c KM |
1584 | /* mapping was already done by vmapbuf */ |
1585 | io.iov_base = bp->b_un.b_addr; | |
1586 | #else | |
e8540f59 KM |
1587 | o = (int)bp->b_un.b_addr & PGOFSET; |
1588 | npf2 = npf = btoc(bp->b_bcount + o); | |
1589 | ||
9238aa59 RM |
1590 | /* |
1591 | * Get some mapping page table entries | |
1592 | */ | |
1593 | while ((reg = rmalloc(nfsmap, (long)npf)) == 0) { | |
1594 | nfsmap_want++; | |
d8792713 KM |
1595 | (void) tsleep((caddr_t)&nfsmap_want, PZERO-1, "nfsmap", |
1596 | 0); | |
9238aa59 RM |
1597 | } |
1598 | reg--; | |
e8540f59 KM |
1599 | if (bp->b_flags & B_PAGET) |
1600 | pte = &Usrptmap[btokmx((struct pte *)bp->b_un.b_addr)]; | |
9238aa59 | 1601 | else { |
e8540f59 | 1602 | v = btop(bp->b_un.b_addr); |
9238aa59 RM |
1603 | if (bp->b_flags & B_UAREA) |
1604 | pte = &rp->p_addr[v]; | |
1605 | else | |
1606 | pte = vtopte(rp, v); | |
1607 | } | |
e8540f59 | 1608 | |
9238aa59 RM |
1609 | /* |
1610 | * Play vmaccess() but with the Nfsiomap page table | |
1611 | */ | |
1612 | ppte = &Nfsiomap[reg]; | |
1613 | vbase = vaddr = &nfsiobuf[reg*NBPG]; | |
1614 | while (npf != 0) { | |
1615 | mapin(ppte, (u_int)vaddr, pte->pg_pfnum, (int)(PG_V|PG_KW)); | |
a2907882 | 1616 | #if defined(tahoe) |
9238aa59 | 1617 | mtpr(P1DC, vaddr); |
a2907882 | 1618 | #endif |
9238aa59 RM |
1619 | ppte++; |
1620 | pte++; | |
1621 | vaddr += NBPG; | |
1622 | --npf; | |
1623 | } | |
7848989c KM |
1624 | io.iov_base = vbase+o; |
1625 | #endif /* !defined(hp300) */ | |
e8540f59 KM |
1626 | |
1627 | /* | |
1628 | * And do the i/o rpc | |
1629 | */ | |
e8540f59 | 1630 | io.iov_len = uiop->uio_resid = bp->b_bcount; |
589be24d | 1631 | uiop->uio_offset = bp->b_blkno * DEV_BSIZE; |
e8540f59 KM |
1632 | if (bp->b_flags & B_READ) { |
1633 | uiop->uio_rw = UIO_READ; | |
1634 | nfsstats.read_physios++; | |
1c89915d | 1635 | bp->b_error = error = nfs_readrpc(vp, uiop, cr, rp); |
8986c97c | 1636 | (void) vnode_pager_uncache(vp); |
e8540f59 KM |
1637 | } else { |
1638 | uiop->uio_rw = UIO_WRITE; | |
1639 | nfsstats.write_physios++; | |
1c89915d | 1640 | bp->b_error = error = nfs_writerpc(vp, uiop, cr, rp); |
ffe6f482 | 1641 | } |
e8540f59 KM |
1642 | |
1643 | /* | |
1644 | * Finally, release pte's used by physical i/o | |
1645 | */ | |
9238aa59 | 1646 | crfree(cr); |
4508742b | 1647 | #if !defined(hp300) && !defined(i386) |
9238aa59 RM |
1648 | rmfree(nfsmap, (long)npf2, (long)++reg); |
1649 | if (nfsmap_want) { | |
1650 | nfsmap_want = 0; | |
1651 | wakeup((caddr_t)&nfsmap_want); | |
1652 | } | |
7848989c | 1653 | #endif |
e8540f59 KM |
1654 | } else { |
1655 | if (bp->b_flags & B_READ) { | |
1656 | io.iov_len = uiop->uio_resid = bp->b_bcount; | |
e8540f59 KM |
1657 | io.iov_base = bp->b_un.b_addr; |
1658 | uiop->uio_rw = UIO_READ; | |
f0f1cbaa KM |
1659 | switch (vp->v_type) { |
1660 | case VREG: | |
1661 | uiop->uio_offset = bp->b_blkno * DEV_BSIZE; | |
1662 | nfsstats.read_bios++; | |
1663 | error = nfs_readrpc(vp, uiop, bp->b_rcred, | |
1664 | bp->b_proc); | |
1665 | break; | |
1666 | case VLNK: | |
1667 | uiop->uio_offset = 0; | |
1668 | nfsstats.readlink_bios++; | |
1669 | error = nfs_readlinkrpc(vp, uiop, bp->b_rcred, | |
1670 | bp->b_proc); | |
1671 | break; | |
1672 | case VDIR: | |
1673 | uiop->uio_offset = bp->b_lblkno; | |
1674 | nfsstats.readdir_bios++; | |
1675 | error = nfs_readdirrpc(vp, uiop, bp->b_rcred, | |
1676 | bp->b_proc); | |
1677 | /* | |
1678 | * Save offset cookie in b_blkno. | |
1679 | */ | |
1680 | bp->b_blkno = uiop->uio_offset; | |
1681 | break; | |
1682 | }; | |
1683 | bp->b_error = error; | |
e8540f59 KM |
1684 | } else { |
1685 | io.iov_len = uiop->uio_resid = bp->b_dirtyend | |
1686 | - bp->b_dirtyoff; | |
589be24d | 1687 | uiop->uio_offset = (bp->b_blkno * DEV_BSIZE) |
e8540f59 KM |
1688 | + bp->b_dirtyoff; |
1689 | io.iov_base = bp->b_un.b_addr + bp->b_dirtyoff; | |
1690 | uiop->uio_rw = UIO_WRITE; | |
1691 | nfsstats.write_bios++; | |
f0f1cbaa KM |
1692 | bp->b_error = error = nfs_writerpc(vp, uiop, |
1693 | bp->b_wcred, bp->b_proc); | |
e8540f59 | 1694 | if (error) { |
e8540f59 KM |
1695 | np->n_error = error; |
1696 | np->n_flag |= NWRITEERR; | |
1697 | } | |
1698 | bp->b_dirtyoff = bp->b_dirtyend = 0; | |
1699 | } | |
9238aa59 | 1700 | } |
e8540f59 KM |
1701 | if (error) |
1702 | bp->b_flags |= B_ERROR; | |
1703 | bp->b_resid = uiop->uio_resid; | |
a2907882 | 1704 | biodone(bp); |
9238aa59 RM |
1705 | return (error); |
1706 | } | |
1707 | ||
1708 | /* | |
1709 | * Flush all the blocks associated with a vnode. | |
1710 | * Walk through the buffer pool and push any dirty pages | |
1711 | * associated with the vnode. | |
1712 | */ | |
13576453 | 1713 | /* ARGSUSED */ |
f8428623 | 1714 | nfs_fsync(vp, fflags, cred, waitfor) |
9238aa59 RM |
1715 | register struct vnode *vp; |
1716 | int fflags; | |
1717 | struct ucred *cred; | |
f8428623 | 1718 | int waitfor; |
9238aa59 RM |
1719 | { |
1720 | register struct nfsnode *np = VTONFS(vp); | |
e8540f59 | 1721 | int error = 0; |
9238aa59 | 1722 | |
9238aa59 RM |
1723 | if (np->n_flag & NMODIFIED) { |
1724 | np->n_flag &= ~NMODIFIED; | |
e8540f59 | 1725 | vflushbuf(vp, waitfor == MNT_WAIT ? B_SYNC : 0); |
9238aa59 | 1726 | } |
e8540f59 KM |
1727 | if (!error && (np->n_flag & NWRITEERR)) |
1728 | error = np->n_error; | |
a2907882 KM |
1729 | return (error); |
1730 | } | |
d002709d | 1731 | |
a4128336 KM |
1732 | /* |
1733 | * NFS advisory byte-level locks. | |
1734 | * Currently unsupported. | |
1735 | */ | |
1736 | nfs_advlock(vp, id, op, fl, flags) | |
1737 | struct vnode *vp; | |
1738 | caddr_t id; | |
1739 | int op; | |
1740 | struct flock *fl; | |
1741 | int flags; | |
1742 | { | |
1743 | ||
1744 | return (EOPNOTSUPP); | |
1745 | } | |
1746 | ||
d002709d KM |
1747 | /* |
1748 | * Print out the contents of an nfsnode. | |
1749 | */ | |
1750 | nfs_print(vp) | |
1751 | struct vnode *vp; | |
1752 | { | |
1753 | register struct nfsnode *np = VTONFS(vp); | |
1754 | ||
b2d955e4 KM |
1755 | printf("tag VT_NFS, fileid %d fsid 0x%x", |
1756 | np->n_vattr.va_fileid, np->n_vattr.va_fsid); | |
1757 | #ifdef FIFO | |
1758 | if (vp->v_type == VFIFO) | |
1759 | fifo_printinfo(vp); | |
1760 | #endif /* FIFO */ | |
1761 | printf("%s\n", (np->n_flag & NLOCKED) ? " (LOCKED)" : ""); | |
1a1dbccb KM |
1762 | if (np->n_lockholder == 0) |
1763 | return; | |
1764 | printf("\towner pid %d", np->n_lockholder); | |
1765 | if (np->n_lockwaiter) | |
1766 | printf(" waiting pid %d", np->n_lockwaiter); | |
1767 | printf("\n"); | |
d002709d | 1768 | } |