Commit | Line | Data |
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971b93e3 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% |
971b93e3 | 9 | * |
058dee65 | 10 | * @(#)nfs_serv.c 7.36 (Berkeley) %G% |
971b93e3 KM |
11 | */ |
12 | ||
13 | /* | |
14 | * nfs version 2 server calls to vnode ops | |
15 | * - these routines generally have 3 phases | |
16 | * 1 - break down and validate rpc request in mbuf list | |
17 | * 2 - do the vnode ops for the request | |
36c3043b | 18 | * (surprisingly ?? many are very similar to syscalls in vfs_syscalls.c) |
971b93e3 KM |
19 | * 3 - build the rpc reply in an mbuf list |
20 | * nb: | |
21 | * - do not mix the phases, since the nfsm_?? macros can return failures | |
f0f1cbaa | 22 | * on a bad rpc or similar and do not do any vrele() or vput()'s |
971b93e3 | 23 | * |
36c3043b | 24 | * - the nfsm_reply() macro generates an nfs rpc reply with the nfs |
971b93e3 | 25 | * error number iff error != 0 whereas |
f0f1cbaa KM |
26 | * returning an error from the server function implies a fatal error |
27 | * such as a badly constructed rpc request that should be dropped without | |
28 | * a reply. | |
971b93e3 KM |
29 | */ |
30 | ||
971b93e3 | 31 | #include "param.h" |
e587d97d | 32 | #include "file.h" |
971b93e3 | 33 | #include "vnode.h" |
e587d97d KM |
34 | #include "mount.h" |
35 | #include "mbuf.h" | |
058dee65 | 36 | |
d4e5799e KM |
37 | #include "../ufs/quota.h" |
38 | #include "../ufs/inode.h" | |
058dee65 | 39 | |
971b93e3 KM |
40 | #include "nfsv2.h" |
41 | #include "nfs.h" | |
42 | #include "xdr_subs.h" | |
43 | #include "nfsm_subs.h" | |
44 | ||
45 | /* Defs */ | |
36c3043b KM |
46 | #define TRUE 1 |
47 | #define FALSE 0 | |
971b93e3 KM |
48 | |
49 | /* Global vars */ | |
50 | extern u_long nfs_procids[NFS_NPROCS]; | |
51 | extern u_long nfs_xdrneg1; | |
52 | extern u_long nfs_false, nfs_true; | |
d4e5799e KM |
53 | nfstype nfs_type[9]={ NFNON, NFREG, NFDIR, NFBLK, NFCHR, NFLNK, NFNON, |
54 | NFCHR, NFNON }; | |
971b93e3 KM |
55 | |
56 | /* | |
57 | * nfs getattr service | |
58 | */ | |
e8540f59 | 59 | nfsrv_getattr(mrep, md, dpos, cred, xid, mrq, repstat) |
971b93e3 KM |
60 | struct mbuf **mrq; |
61 | struct mbuf *mrep, *md; | |
62 | caddr_t dpos; | |
63 | struct ucred *cred; | |
64 | u_long xid; | |
e8540f59 | 65 | int *repstat; |
971b93e3 | 66 | { |
9238aa59 | 67 | register struct nfsv2_fattr *fp; |
971b93e3 KM |
68 | struct vattr va; |
69 | register struct vattr *vap = &va; | |
70 | struct vnode *vp; | |
71 | nfsv2fh_t nfh; | |
72 | fhandle_t *fhp; | |
0bd503ad KM |
73 | register u_long *p; |
74 | register long t1; | |
75 | caddr_t bpos; | |
76 | int error = 0; | |
77 | char *cp2; | |
e8540f59 | 78 | struct mbuf *mb, *mb2, *mreq; |
971b93e3 KM |
79 | |
80 | fhp = &nfh.fh_generic; | |
81 | nfsm_srvmtofh(fhp); | |
82 | if (error = nfsrv_fhtovp(fhp, TRUE, &vp, cred)) | |
83 | nfsm_reply(0); | |
84 | error = VOP_GETATTR(vp, vap, cred); | |
85 | vput(vp); | |
86 | nfsm_reply(NFSX_FATTR); | |
9238aa59 | 87 | nfsm_build(fp, struct nfsv2_fattr *, NFSX_FATTR); |
e8540f59 | 88 | nfsm_srvfillattr; |
971b93e3 KM |
89 | nfsm_srvdone; |
90 | } | |
91 | ||
92 | /* | |
93 | * nfs setattr service | |
94 | */ | |
e8540f59 | 95 | nfsrv_setattr(mrep, md, dpos, cred, xid, mrq, repstat) |
971b93e3 KM |
96 | struct mbuf **mrq; |
97 | struct mbuf *mrep, *md; | |
98 | caddr_t dpos; | |
99 | struct ucred *cred; | |
100 | u_long xid; | |
e8540f59 | 101 | int *repstat; |
971b93e3 KM |
102 | { |
103 | struct vattr va; | |
104 | register struct vattr *vap = &va; | |
9238aa59 RM |
105 | register struct nfsv2_sattr *sp; |
106 | register struct nfsv2_fattr *fp; | |
971b93e3 KM |
107 | struct vnode *vp; |
108 | nfsv2fh_t nfh; | |
109 | fhandle_t *fhp; | |
0bd503ad KM |
110 | register u_long *p; |
111 | register long t1; | |
112 | caddr_t bpos; | |
113 | int error = 0; | |
114 | char *cp2; | |
e8540f59 | 115 | struct mbuf *mb, *mb2, *mreq; |
971b93e3 KM |
116 | |
117 | fhp = &nfh.fh_generic; | |
118 | nfsm_srvmtofh(fhp); | |
9238aa59 | 119 | nfsm_disect(sp, struct nfsv2_sattr *, NFSX_SATTR); |
971b93e3 KM |
120 | if (error = nfsrv_fhtovp(fhp, TRUE, &vp, cred)) |
121 | nfsm_reply(0); | |
24ed1a73 | 122 | if (error = nfsrv_access(vp, VWRITE, cred)) |
971b93e3 | 123 | goto out; |
3ee1461b | 124 | VATTR_NULL(vap); |
971b93e3 KM |
125 | /* |
126 | * Nah nah nah nah na nah | |
127 | * There is a bug in the Sun client that puts 0xffff in the mode | |
128 | * field of sattr when it should put in 0xffffffff. The u_short | |
129 | * doesn't sign extend. | |
130 | * --> check the low order 2 bytes for 0xffff | |
131 | */ | |
9238aa59 RM |
132 | if ((fxdr_unsigned(int, sp->sa_mode) & 0xffff) != 0xffff) |
133 | vap->va_mode = nfstov_mode(sp->sa_mode); | |
134 | if (sp->sa_uid != nfs_xdrneg1) | |
135 | vap->va_uid = fxdr_unsigned(uid_t, sp->sa_uid); | |
136 | if (sp->sa_gid != nfs_xdrneg1) | |
137 | vap->va_gid = fxdr_unsigned(gid_t, sp->sa_gid); | |
e8540f59 | 138 | if (sp->sa_size != nfs_xdrneg1) |
9238aa59 | 139 | vap->va_size = fxdr_unsigned(u_long, sp->sa_size); |
e8540f59 KM |
140 | /* |
141 | * The usec field of sa_atime is overloaded with the va_flags field | |
142 | * for 4.4BSD clients. Hopefully other clients always set both the | |
143 | * sec and usec fields to -1 when not setting the atime. | |
144 | */ | |
145 | if (sp->sa_atime.tv_sec != nfs_xdrneg1) { | |
146 | vap->va_atime.tv_sec = fxdr_unsigned(long, sp->sa_atime.tv_sec); | |
147 | vap->va_atime.tv_usec = 0; | |
36c3043b | 148 | } |
e8540f59 KM |
149 | if (sp->sa_atime.tv_usec != nfs_xdrneg1) |
150 | vap->va_flags = fxdr_unsigned(u_long, sp->sa_atime.tv_usec); | |
9238aa59 RM |
151 | if (sp->sa_mtime.tv_sec != nfs_xdrneg1) |
152 | fxdr_time(&sp->sa_mtime, &vap->va_mtime); | |
971b93e3 KM |
153 | if (error = VOP_SETATTR(vp, vap, cred)) { |
154 | vput(vp); | |
155 | nfsm_reply(0); | |
156 | } | |
157 | error = VOP_GETATTR(vp, vap, cred); | |
158 | out: | |
159 | vput(vp); | |
160 | nfsm_reply(NFSX_FATTR); | |
9238aa59 | 161 | nfsm_build(fp, struct nfsv2_fattr *, NFSX_FATTR); |
e8540f59 | 162 | nfsm_srvfillattr; |
971b93e3 KM |
163 | nfsm_srvdone; |
164 | } | |
165 | ||
166 | /* | |
167 | * nfs lookup rpc | |
168 | */ | |
e8540f59 | 169 | nfsrv_lookup(mrep, md, dpos, cred, xid, mrq, repstat) |
971b93e3 KM |
170 | struct mbuf **mrq; |
171 | struct mbuf *mrep, *md; | |
172 | caddr_t dpos; | |
173 | struct ucred *cred; | |
174 | u_long xid; | |
e8540f59 | 175 | int *repstat; |
971b93e3 | 176 | { |
9238aa59 | 177 | register struct nfsv2_fattr *fp; |
ffe6f482 KM |
178 | struct nameidata nami; |
179 | register struct nameidata *ndp = &nami; | |
971b93e3 KM |
180 | struct vnode *vp; |
181 | nfsv2fh_t nfh; | |
182 | fhandle_t *fhp; | |
0bd503ad KM |
183 | register caddr_t cp; |
184 | register u_long *p; | |
185 | register long t1; | |
186 | caddr_t bpos; | |
187 | int error = 0; | |
188 | char *cp2; | |
e8540f59 | 189 | struct mbuf *mb, *mb2, *mreq; |
971b93e3 KM |
190 | long len; |
191 | struct vattr va, *vap = &va; | |
192 | ||
ffe6f482 | 193 | ndinit(ndp); |
971b93e3 KM |
194 | fhp = &nfh.fh_generic; |
195 | nfsm_srvmtofh(fhp); | |
196 | nfsm_srvstrsiz(len, NFS_MAXNAMLEN); | |
197 | ndp->ni_cred = cred; | |
198 | ndp->ni_nameiop = LOOKUP | LOCKLEAF; | |
971b93e3 KM |
199 | if (error = nfs_namei(ndp, fhp, len, &md, &dpos)) |
200 | nfsm_reply(0); | |
201 | vp = ndp->ni_vp; | |
202 | bzero((caddr_t)fhp, sizeof(nfh)); | |
54fb9dc2 | 203 | fhp->fh_fsid = vp->v_mount->mnt_stat.f_fsid; |
971b93e3 KM |
204 | if (error = VFS_VPTOFH(vp, &fhp->fh_fid)) { |
205 | vput(vp); | |
206 | nfsm_reply(0); | |
207 | } | |
208 | error = VOP_GETATTR(vp, vap, cred); | |
209 | vput(vp); | |
210 | nfsm_reply(NFSX_FH+NFSX_FATTR); | |
211 | nfsm_srvfhtom(fhp); | |
9238aa59 | 212 | nfsm_build(fp, struct nfsv2_fattr *, NFSX_FATTR); |
e8540f59 | 213 | nfsm_srvfillattr; |
971b93e3 KM |
214 | nfsm_srvdone; |
215 | } | |
216 | ||
217 | /* | |
218 | * nfs readlink service | |
219 | */ | |
e8540f59 | 220 | nfsrv_readlink(mrep, md, dpos, cred, xid, mrq, repstat) |
971b93e3 KM |
221 | struct mbuf **mrq; |
222 | struct mbuf *mrep, *md; | |
223 | caddr_t dpos; | |
224 | struct ucred *cred; | |
e8540f59 KM |
225 | u_long xid; |
226 | int *repstat; | |
971b93e3 | 227 | { |
f0f1cbaa | 228 | struct iovec iv[(NFS_MAXPATHLEN+MLEN-1)/MLEN]; |
971b93e3 KM |
229 | register struct iovec *ivp = iv; |
230 | register struct mbuf *mp; | |
0bd503ad KM |
231 | register u_long *p; |
232 | register long t1; | |
233 | caddr_t bpos; | |
234 | int error = 0; | |
235 | char *cp2; | |
e8540f59 | 236 | struct mbuf *mb, *mb2, *mp2, *mp3, *mreq; |
971b93e3 KM |
237 | struct vnode *vp; |
238 | nfsv2fh_t nfh; | |
239 | fhandle_t *fhp; | |
240 | struct uio io, *uiop = &io; | |
241 | int i, tlen, len; | |
242 | ||
243 | fhp = &nfh.fh_generic; | |
244 | nfsm_srvmtofh(fhp); | |
245 | len = 0; | |
246 | i = 0; | |
247 | while (len < NFS_MAXPATHLEN) { | |
248 | MGET(mp, M_WAIT, MT_DATA); | |
f0f1cbaa | 249 | MCLGET(mp, M_WAIT); |
971b93e3 KM |
250 | mp->m_len = NFSMSIZ(mp); |
251 | if (len == 0) | |
252 | mp3 = mp2 = mp; | |
f0f1cbaa | 253 | else { |
971b93e3 | 254 | mp2->m_next = mp; |
f0f1cbaa KM |
255 | mp2 = mp; |
256 | } | |
971b93e3 KM |
257 | if ((len+mp->m_len) > NFS_MAXPATHLEN) { |
258 | mp->m_len = NFS_MAXPATHLEN-len; | |
259 | len = NFS_MAXPATHLEN; | |
260 | } else | |
261 | len += mp->m_len; | |
262 | ivp->iov_base = mtod(mp, caddr_t); | |
263 | ivp->iov_len = mp->m_len; | |
264 | i++; | |
265 | ivp++; | |
266 | } | |
267 | uiop->uio_iov = iv; | |
268 | uiop->uio_iovcnt = i; | |
269 | uiop->uio_offset = 0; | |
270 | uiop->uio_resid = len; | |
271 | uiop->uio_rw = UIO_READ; | |
272 | uiop->uio_segflg = UIO_SYSSPACE; | |
273 | if (error = nfsrv_fhtovp(fhp, TRUE, &vp, cred)) { | |
274 | m_freem(mp3); | |
275 | nfsm_reply(0); | |
276 | } | |
277 | if (vp->v_type != VLNK) { | |
278 | error = EINVAL; | |
279 | goto out; | |
280 | } | |
281 | error = VOP_READLINK(vp, uiop, cred); | |
282 | out: | |
283 | vput(vp); | |
284 | if (error) | |
285 | m_freem(mp3); | |
286 | nfsm_reply(NFSX_UNSIGNED); | |
287 | if (uiop->uio_resid > 0) { | |
288 | len -= uiop->uio_resid; | |
289 | tlen = nfsm_rndup(len); | |
290 | nfsm_adj(mp3, NFS_MAXPATHLEN-tlen, tlen-len); | |
291 | } | |
292 | nfsm_build(p, u_long *, NFSX_UNSIGNED); | |
293 | *p = txdr_unsigned(len); | |
294 | mb->m_next = mp3; | |
295 | nfsm_srvdone; | |
296 | } | |
297 | ||
298 | /* | |
299 | * nfs read service | |
300 | */ | |
e8540f59 | 301 | nfsrv_read(mrep, md, dpos, cred, xid, mrq, repstat) |
971b93e3 KM |
302 | struct mbuf **mrq; |
303 | struct mbuf *mrep, *md; | |
304 | caddr_t dpos; | |
305 | struct ucred *cred; | |
306 | u_long xid; | |
e8540f59 | 307 | int *repstat; |
971b93e3 | 308 | { |
170bfd05 KM |
309 | register struct iovec *iv; |
310 | struct iovec *iv2; | |
f0f1cbaa | 311 | register struct mbuf *m; |
9238aa59 | 312 | register struct nfsv2_fattr *fp; |
0bd503ad KM |
313 | register u_long *p; |
314 | register long t1; | |
315 | caddr_t bpos; | |
316 | int error = 0; | |
317 | char *cp2; | |
e8540f59 | 318 | struct mbuf *mb, *mb2, *mreq; |
f0f1cbaa | 319 | struct mbuf *m2, *m3; |
971b93e3 KM |
320 | struct vnode *vp; |
321 | nfsv2fh_t nfh; | |
322 | fhandle_t *fhp; | |
323 | struct uio io, *uiop = &io; | |
324 | struct vattr va, *vap = &va; | |
f0f1cbaa | 325 | int i, cnt, len, left, siz, tlen; |
971b93e3 KM |
326 | off_t off; |
327 | ||
328 | fhp = &nfh.fh_generic; | |
329 | nfsm_srvmtofh(fhp); | |
330 | nfsm_disect(p, u_long *, NFSX_UNSIGNED); | |
331 | off = fxdr_unsigned(off_t, *p); | |
332 | nfsm_srvstrsiz(cnt, NFS_MAXDATA); | |
333 | if (error = nfsrv_fhtovp(fhp, TRUE, &vp, cred)) | |
334 | nfsm_reply(0); | |
24ed1a73 | 335 | if (error = nfsrv_access(vp, VREAD | VEXEC, cred)) { |
971b93e3 KM |
336 | vput(vp); |
337 | nfsm_reply(0); | |
338 | } | |
339 | len = left = cnt; | |
f0f1cbaa KM |
340 | /* |
341 | * Generate the mbuf list with the uio_iov ref. to it. | |
342 | */ | |
343 | i = 0; | |
344 | m3 = (struct mbuf *)0; | |
d4e5799e KM |
345 | #ifdef lint |
346 | m2 = (struct mbuf *)0; | |
347 | #endif /* lint */ | |
170bfd05 KM |
348 | MALLOC(iv, struct iovec *, |
349 | ((NFS_MAXDATA+MLEN-1)/MLEN) * sizeof (struct iovec), M_TEMP, | |
350 | M_WAITOK); | |
351 | iv2 = iv; | |
f0f1cbaa KM |
352 | while (left > 0) { |
353 | MGET(m, M_WAIT, MT_DATA); | |
354 | if (left > MINCLSIZE) | |
355 | MCLGET(m, M_WAIT); | |
356 | m->m_len = 0; | |
357 | siz = min(M_TRAILINGSPACE(m), left); | |
358 | m->m_len = siz; | |
170bfd05 KM |
359 | iv->iov_base = mtod(m, caddr_t); |
360 | iv->iov_len = siz; | |
361 | iv++; | |
f0f1cbaa KM |
362 | i++; |
363 | left -= siz; | |
364 | if (m3) { | |
365 | m2->m_next = m; | |
366 | m2 = m; | |
367 | } else | |
368 | m3 = m2 = m; | |
369 | } | |
170bfd05 | 370 | uiop->uio_iov = iv2; |
f0f1cbaa | 371 | uiop->uio_iovcnt = i; |
971b93e3 KM |
372 | uiop->uio_offset = off; |
373 | uiop->uio_resid = cnt; | |
374 | uiop->uio_rw = UIO_READ; | |
375 | uiop->uio_segflg = UIO_SYSSPACE; | |
e9843ca3 KM |
376 | error = VOP_READ(vp, uiop, IO_NODELOCKED, cred); |
377 | off = uiop->uio_offset; | |
170bfd05 | 378 | FREE((caddr_t)iv2, M_TEMP); |
971b93e3 | 379 | if (error) { |
f0f1cbaa | 380 | m_freem(m3); |
971b93e3 KM |
381 | vput(vp); |
382 | nfsm_reply(0); | |
383 | } | |
384 | if (error = VOP_GETATTR(vp, vap, cred)) | |
f0f1cbaa | 385 | m_freem(m3); |
971b93e3 KM |
386 | vput(vp); |
387 | nfsm_reply(NFSX_FATTR+NFSX_UNSIGNED); | |
9238aa59 | 388 | nfsm_build(fp, struct nfsv2_fattr *, NFSX_FATTR); |
e8540f59 | 389 | nfsm_srvfillattr; |
25951042 KM |
390 | len -= uiop->uio_resid; |
391 | if (len > 0) { | |
392 | tlen = nfsm_rndup(len); | |
393 | if (cnt != tlen || tlen != len) | |
f0f1cbaa | 394 | nfsm_adj(m3, cnt-tlen, tlen-len); |
25951042 KM |
395 | } else { |
396 | m_freem(m3); | |
397 | m3 = (struct mbuf *)0; | |
971b93e3 | 398 | } |
9238aa59 | 399 | nfsm_build(p, u_long *, NFSX_UNSIGNED); |
971b93e3 | 400 | *p = txdr_unsigned(len); |
f0f1cbaa | 401 | mb->m_next = m3; |
971b93e3 KM |
402 | nfsm_srvdone; |
403 | } | |
404 | ||
405 | /* | |
406 | * nfs write service | |
407 | */ | |
e8540f59 | 408 | nfsrv_write(mrep, md, dpos, cred, xid, mrq, repstat) |
971b93e3 KM |
409 | struct mbuf *mrep, *md, **mrq; |
410 | caddr_t dpos; | |
411 | struct ucred *cred; | |
e8540f59 KM |
412 | u_long xid; |
413 | int *repstat; | |
971b93e3 KM |
414 | { |
415 | register struct iovec *ivp; | |
416 | register struct mbuf *mp; | |
9238aa59 | 417 | register struct nfsv2_fattr *fp; |
f0f1cbaa | 418 | struct iovec iv[NFS_MAXIOVEC]; |
971b93e3 KM |
419 | struct vattr va; |
420 | register struct vattr *vap = &va; | |
0bd503ad KM |
421 | register u_long *p; |
422 | register long t1; | |
423 | caddr_t bpos; | |
424 | int error = 0; | |
425 | char *cp2; | |
e8540f59 | 426 | struct mbuf *mb, *mb2, *mreq; |
971b93e3 KM |
427 | struct vnode *vp; |
428 | nfsv2fh_t nfh; | |
429 | fhandle_t *fhp; | |
430 | struct uio io, *uiop = &io; | |
431 | off_t off; | |
432 | long siz, len, xfer; | |
433 | ||
434 | fhp = &nfh.fh_generic; | |
435 | nfsm_srvmtofh(fhp); | |
436 | nfsm_disect(p, u_long *, 4*NFSX_UNSIGNED); | |
437 | off = fxdr_unsigned(off_t, *++p); | |
438 | p += 2; | |
439 | len = fxdr_unsigned(long, *p); | |
440 | if (len > NFS_MAXDATA || len <= 0) { | |
441 | error = EBADRPC; | |
442 | nfsm_reply(0); | |
443 | } | |
444 | if (dpos == (mtod(md, caddr_t)+md->m_len)) { | |
445 | mp = md->m_next; | |
446 | if (mp == NULL) { | |
447 | error = EBADRPC; | |
448 | nfsm_reply(0); | |
449 | } | |
450 | } else { | |
451 | mp = md; | |
452 | siz = dpos-mtod(mp, caddr_t); | |
453 | mp->m_len -= siz; | |
454 | NFSMADV(mp, siz); | |
455 | } | |
456 | if (error = nfsrv_fhtovp(fhp, TRUE, &vp, cred)) | |
457 | nfsm_reply(0); | |
24ed1a73 | 458 | if (error = nfsrv_access(vp, VWRITE, cred)) { |
971b93e3 KM |
459 | vput(vp); |
460 | nfsm_reply(0); | |
461 | } | |
462 | uiop->uio_resid = 0; | |
463 | uiop->uio_rw = UIO_WRITE; | |
464 | uiop->uio_segflg = UIO_SYSSPACE; | |
465 | /* | |
f0f1cbaa | 466 | * Do up to NFS_MAXIOVEC mbufs of write each iteration of the |
971b93e3 KM |
467 | * loop until done. |
468 | */ | |
469 | while (len > 0 && uiop->uio_resid == 0) { | |
470 | ivp = iv; | |
471 | siz = 0; | |
472 | uiop->uio_iov = ivp; | |
473 | uiop->uio_iovcnt = 0; | |
474 | uiop->uio_offset = off; | |
f0f1cbaa | 475 | while (len > 0 && uiop->uio_iovcnt < NFS_MAXIOVEC && mp != NULL) { |
971b93e3 KM |
476 | ivp->iov_base = mtod(mp, caddr_t); |
477 | if (len < mp->m_len) | |
478 | ivp->iov_len = xfer = len; | |
479 | else | |
480 | ivp->iov_len = xfer = mp->m_len; | |
481 | #ifdef notdef | |
482 | /* Not Yet .. */ | |
483 | if (M_HASCL(mp) && (((u_long)ivp->iov_base) & CLOFSET) == 0) | |
484 | ivp->iov_op = NULL; /* what should it be ?? */ | |
485 | else | |
486 | ivp->iov_op = NULL; | |
487 | #endif | |
488 | uiop->uio_iovcnt++; | |
489 | ivp++; | |
490 | len -= xfer; | |
491 | siz += xfer; | |
492 | mp = mp->m_next; | |
493 | } | |
494 | if (len > 0 && mp == NULL) { | |
495 | error = EBADRPC; | |
496 | vput(vp); | |
497 | nfsm_reply(0); | |
498 | } | |
499 | uiop->uio_resid = siz; | |
e9843ca3 | 500 | if (error = VOP_WRITE(vp, uiop, IO_SYNC | IO_NODELOCKED, |
971b93e3 KM |
501 | cred)) { |
502 | vput(vp); | |
503 | nfsm_reply(0); | |
504 | } | |
e9843ca3 | 505 | off = uiop->uio_offset; |
971b93e3 KM |
506 | } |
507 | error = VOP_GETATTR(vp, vap, cred); | |
508 | vput(vp); | |
509 | nfsm_reply(NFSX_FATTR); | |
9238aa59 | 510 | nfsm_build(fp, struct nfsv2_fattr *, NFSX_FATTR); |
e8540f59 | 511 | nfsm_srvfillattr; |
971b93e3 KM |
512 | nfsm_srvdone; |
513 | } | |
514 | ||
515 | /* | |
516 | * nfs create service | |
517 | * now does a truncate to 0 length via. setattr if it already exists | |
518 | */ | |
e8540f59 | 519 | nfsrv_create(mrep, md, dpos, cred, xid, mrq, repstat) |
971b93e3 KM |
520 | struct mbuf *mrep, *md, **mrq; |
521 | caddr_t dpos; | |
522 | struct ucred *cred; | |
e8540f59 KM |
523 | u_long xid; |
524 | int *repstat; | |
971b93e3 | 525 | { |
9238aa59 | 526 | register struct nfsv2_fattr *fp; |
971b93e3 KM |
527 | struct vattr va; |
528 | register struct vattr *vap = &va; | |
ffe6f482 KM |
529 | struct nameidata nami; |
530 | register struct nameidata *ndp = &nami; | |
0bd503ad KM |
531 | register caddr_t cp; |
532 | register u_long *p; | |
533 | register long t1; | |
534 | caddr_t bpos; | |
d4e5799e | 535 | long rdev; |
0bd503ad KM |
536 | int error = 0; |
537 | char *cp2; | |
e8540f59 | 538 | struct mbuf *mb, *mb2, *mreq; |
971b93e3 KM |
539 | struct vnode *vp; |
540 | nfsv2fh_t nfh; | |
541 | fhandle_t *fhp; | |
542 | long len; | |
543 | ||
ffe6f482 | 544 | ndinit(ndp); |
971b93e3 KM |
545 | fhp = &nfh.fh_generic; |
546 | nfsm_srvmtofh(fhp); | |
547 | nfsm_srvstrsiz(len, NFS_MAXNAMLEN); | |
548 | ndp->ni_cred = cred; | |
549 | ndp->ni_nameiop = CREATE | LOCKPARENT | LOCKLEAF; | |
971b93e3 KM |
550 | if (error = nfs_namei(ndp, fhp, len, &md, &dpos)) |
551 | nfsm_reply(0); | |
3ee1461b | 552 | VATTR_NULL(vap); |
d4e5799e | 553 | nfsm_disect(p, u_long *, NFSX_SATTR); |
971b93e3 KM |
554 | /* |
555 | * Iff doesn't exist, create it | |
556 | * otherwise just truncate to 0 length | |
557 | * should I set the mode too ?? | |
558 | */ | |
559 | if (ndp->ni_vp == NULL) { | |
d4e5799e | 560 | vap->va_type = IFTOVT(fxdr_unsigned(u_long, *p)); |
4249699a KM |
561 | if (vap->va_type == VNON) |
562 | vap->va_type = VREG; | |
d4e5799e KM |
563 | vap->va_mode = nfstov_mode(*p); |
564 | rdev = fxdr_unsigned(long, *(p+3)); | |
1c89915d | 565 | if (vap->va_type == VREG || vap->va_type == VSOCK) { |
d4e5799e KM |
566 | if (error = VOP_CREATE(ndp, vap)) |
567 | nfsm_reply(0); | |
568 | } else if (vap->va_type == VCHR || vap->va_type == VBLK || | |
569 | vap->va_type == VFIFO) { | |
570 | if (vap->va_type == VCHR && rdev == 0xffffffff) | |
571 | vap->va_type = VFIFO; | |
572 | if (vap->va_type == VFIFO) { | |
573 | #ifndef FIFO | |
574 | VOP_ABORTOP(ndp); | |
66955caf | 575 | vput(ndp->ni_dvp); |
d4e5799e KM |
576 | error = ENXIO; |
577 | nfsm_reply(0); | |
578 | #endif /* FIFO */ | |
579 | } else if (error = suser(cred, (short *)0)) { | |
580 | VOP_ABORTOP(ndp); | |
66955caf | 581 | vput(ndp->ni_dvp); |
d4e5799e KM |
582 | nfsm_reply(0); |
583 | } else | |
584 | vap->va_rdev = (dev_t)rdev; | |
585 | if (error = VOP_MKNOD(ndp, vap, cred)) | |
586 | nfsm_reply(0); | |
587 | ndp->ni_nameiop = LOOKUP | LOCKLEAF | HASBUF; | |
588 | if (error = nfs_namei(ndp, fhp, len, &md, &dpos)) | |
589 | nfsm_reply(0); | |
590 | } else { | |
591 | VOP_ABORTOP(ndp); | |
66955caf | 592 | vput(ndp->ni_dvp); |
d4e5799e | 593 | error = ENXIO; |
971b93e3 | 594 | nfsm_reply(0); |
d4e5799e | 595 | } |
36c3043b | 596 | vp = ndp->ni_vp; |
971b93e3 | 597 | } else { |
36c3043b | 598 | vp = ndp->ni_vp; |
54fb9dc2 | 599 | ndp->ni_vp = NULLVP; |
36c3043b | 600 | VOP_ABORTOP(ndp); |
639383fa KM |
601 | if (ndp->ni_dvp == vp) |
602 | vrele(ndp->ni_dvp); | |
603 | else | |
604 | vput(ndp->ni_dvp); | |
971b93e3 | 605 | vap->va_size = 0; |
383e7b4c KM |
606 | if (error = VOP_SETATTR(vp, vap, cred)) { |
607 | vput(vp); | |
971b93e3 | 608 | nfsm_reply(0); |
383e7b4c | 609 | } |
971b93e3 | 610 | } |
971b93e3 | 611 | bzero((caddr_t)fhp, sizeof(nfh)); |
54fb9dc2 | 612 | fhp->fh_fsid = vp->v_mount->mnt_stat.f_fsid; |
971b93e3 KM |
613 | if (error = VFS_VPTOFH(vp, &fhp->fh_fid)) { |
614 | vput(vp); | |
615 | nfsm_reply(0); | |
616 | } | |
617 | error = VOP_GETATTR(vp, vap, cred); | |
618 | vput(vp); | |
619 | nfsm_reply(NFSX_FH+NFSX_FATTR); | |
620 | nfsm_srvfhtom(fhp); | |
9238aa59 | 621 | nfsm_build(fp, struct nfsv2_fattr *, NFSX_FATTR); |
e8540f59 | 622 | nfsm_srvfillattr; |
971b93e3 KM |
623 | return (error); |
624 | nfsmout: | |
625 | VOP_ABORTOP(ndp); | |
639383fa KM |
626 | if (ndp->ni_dvp == ndp->ni_vp) |
627 | vrele(ndp->ni_dvp); | |
628 | else | |
629 | vput(ndp->ni_dvp); | |
66955caf KM |
630 | if (ndp->ni_vp) |
631 | vput(ndp->ni_vp); | |
971b93e3 KM |
632 | return (error); |
633 | } | |
634 | ||
635 | /* | |
636 | * nfs remove service | |
637 | */ | |
e8540f59 | 638 | nfsrv_remove(mrep, md, dpos, cred, xid, mrq, repstat) |
971b93e3 KM |
639 | struct mbuf *mrep, *md, **mrq; |
640 | caddr_t dpos; | |
641 | struct ucred *cred; | |
e8540f59 KM |
642 | u_long xid; |
643 | int *repstat; | |
971b93e3 | 644 | { |
ffe6f482 KM |
645 | struct nameidata nami; |
646 | register struct nameidata *ndp = &nami; | |
0bd503ad KM |
647 | register u_long *p; |
648 | register long t1; | |
649 | caddr_t bpos; | |
650 | int error = 0; | |
651 | char *cp2; | |
e8540f59 | 652 | struct mbuf *mb, *mreq; |
971b93e3 KM |
653 | struct vnode *vp; |
654 | nfsv2fh_t nfh; | |
655 | fhandle_t *fhp; | |
656 | long len; | |
657 | ||
ffe6f482 | 658 | ndinit(ndp); |
971b93e3 KM |
659 | fhp = &nfh.fh_generic; |
660 | nfsm_srvmtofh(fhp); | |
661 | nfsm_srvstrsiz(len, NFS_MAXNAMLEN); | |
662 | ndp->ni_cred = cred; | |
663 | ndp->ni_nameiop = DELETE | LOCKPARENT | LOCKLEAF; | |
971b93e3 KM |
664 | if (error = nfs_namei(ndp, fhp, len, &md, &dpos)) |
665 | nfsm_reply(0); | |
666 | vp = ndp->ni_vp; | |
667 | if (vp->v_type == VDIR && | |
668 | (error = suser(cred, (short *)0))) | |
669 | goto out; | |
670 | /* | |
671 | * Don't unlink a mounted file. | |
672 | */ | |
673 | if (vp->v_flag & VROOT) { | |
674 | error = EBUSY; | |
675 | goto out; | |
676 | } | |
677 | if (vp->v_flag & VTEXT) | |
3329d91f | 678 | #ifdef NVM |
8986c97c | 679 | (void) vnode_pager_uncache(vp); |
3329d91f KM |
680 | #else |
681 | xrele(vp); /* try once to free text */ | |
682 | #endif | |
971b93e3 | 683 | out: |
66955caf | 684 | if (!error) { |
971b93e3 | 685 | error = VOP_REMOVE(ndp); |
66955caf KM |
686 | } else { |
687 | VOP_ABORTOP(ndp); | |
639383fa KM |
688 | if (ndp->ni_dvp == vp) |
689 | vrele(ndp->ni_dvp); | |
690 | else | |
691 | vput(ndp->ni_dvp); | |
66955caf KM |
692 | vput(vp); |
693 | } | |
971b93e3 KM |
694 | nfsm_reply(0); |
695 | nfsm_srvdone; | |
696 | } | |
697 | ||
698 | /* | |
699 | * nfs rename service | |
971b93e3 | 700 | */ |
e8540f59 | 701 | nfsrv_rename(mrep, md, dpos, cred, xid, mrq, repstat) |
971b93e3 KM |
702 | struct mbuf *mrep, *md, **mrq; |
703 | caddr_t dpos; | |
704 | struct ucred *cred; | |
e8540f59 KM |
705 | u_long xid; |
706 | int *repstat; | |
971b93e3 | 707 | { |
36c3043b | 708 | register struct nameidata *ndp; |
0bd503ad KM |
709 | register u_long *p; |
710 | register long t1; | |
711 | caddr_t bpos; | |
712 | int error = 0; | |
713 | char *cp2; | |
e8540f59 | 714 | struct mbuf *mb, *mreq; |
ffe6f482 | 715 | struct nameidata nami, tond; |
971b93e3 KM |
716 | struct vnode *fvp, *tvp, *tdvp; |
717 | nfsv2fh_t fnfh, tnfh; | |
718 | fhandle_t *ffhp, *tfhp; | |
719 | long len, len2; | |
720 | int rootflg = 0; | |
721 | ||
ffe6f482 KM |
722 | ndp = &nami; |
723 | ndinit(ndp); | |
971b93e3 KM |
724 | ffhp = &fnfh.fh_generic; |
725 | tfhp = &tnfh.fh_generic; | |
726 | nfsm_srvmtofh(ffhp); | |
727 | nfsm_srvstrsiz(len, NFS_MAXNAMLEN); | |
728 | /* | |
729 | * Remember if we are root so that we can reset cr_uid before | |
730 | * the second nfs_namei() call | |
731 | */ | |
732 | if (cred->cr_uid == 0) | |
733 | rootflg++; | |
36c3043b | 734 | ndp->ni_cred = cred; |
10bae9ee | 735 | ndp->ni_nameiop = DELETE | WANTPARENT | SAVESTARTDIR; |
36c3043b | 736 | if (error = nfs_namei(ndp, ffhp, len, &md, &dpos)) |
971b93e3 | 737 | nfsm_reply(0); |
36c3043b | 738 | fvp = ndp->ni_vp; |
971b93e3 | 739 | nfsm_srvmtofh(tfhp); |
f0f1cbaa | 740 | nfsm_strsiz(len2, NFS_MAXNAMLEN); |
971b93e3 KM |
741 | if (rootflg) |
742 | cred->cr_uid = 0; | |
ffe6f482 KM |
743 | ndinit(&tond); |
744 | crhold(cred); | |
745 | tond.ni_cred = cred; | |
10bae9ee KM |
746 | tond.ni_nameiop = RENAME | LOCKPARENT | LOCKLEAF | NOCACHE |
747 | | SAVESTARTDIR; | |
66955caf KM |
748 | if (error = nfs_namei(&tond, tfhp, len2, &md, &dpos)) { |
749 | VOP_ABORTOP(ndp); | |
750 | vrele(ndp->ni_dvp); | |
751 | vrele(fvp); | |
752 | goto out1; | |
753 | } | |
36c3043b KM |
754 | tdvp = tond.ni_dvp; |
755 | tvp = tond.ni_vp; | |
971b93e3 KM |
756 | if (tvp != NULL) { |
757 | if (fvp->v_type == VDIR && tvp->v_type != VDIR) { | |
758 | error = EISDIR; | |
759 | goto out; | |
760 | } else if (fvp->v_type != VDIR && tvp->v_type == VDIR) { | |
761 | error = ENOTDIR; | |
762 | goto out; | |
763 | } | |
764 | } | |
971b93e3 KM |
765 | if (fvp->v_mount != tdvp->v_mount) { |
766 | error = EXDEV; | |
767 | goto out; | |
768 | } | |
769 | if (fvp == tdvp || fvp == tvp) | |
770 | error = EINVAL; | |
771 | out: | |
66955caf | 772 | if (!error) { |
36c3043b | 773 | error = VOP_RENAME(ndp, &tond); |
66955caf KM |
774 | } else { |
775 | VOP_ABORTOP(&tond); | |
639383fa KM |
776 | if (tdvp == tvp) |
777 | vrele(tdvp); | |
778 | else | |
779 | vput(tdvp); | |
66955caf KM |
780 | if (tvp) |
781 | vput(tvp); | |
782 | VOP_ABORTOP(ndp); | |
783 | vrele(ndp->ni_dvp); | |
784 | vrele(fvp); | |
971b93e3 | 785 | } |
10bae9ee | 786 | vrele(tond.ni_startdir); |
971b93e3 | 787 | out1: |
10bae9ee | 788 | vrele(ndp->ni_startdir); |
ffe6f482 | 789 | crfree(cred); |
971b93e3 KM |
790 | nfsm_reply(0); |
791 | return (error); | |
792 | nfsmout: | |
10bae9ee KM |
793 | if (ndp->ni_nameiop & SAVESTARTDIR) |
794 | vrele(ndp->ni_startdir); | |
36c3043b | 795 | VOP_ABORTOP(ndp); |
66955caf KM |
796 | vrele(ndp->ni_dvp); |
797 | vrele(fvp); | |
971b93e3 KM |
798 | return (error); |
799 | } | |
800 | ||
801 | /* | |
802 | * nfs link service | |
803 | */ | |
e8540f59 | 804 | nfsrv_link(mrep, md, dpos, cred, xid, mrq, repstat) |
971b93e3 KM |
805 | struct mbuf *mrep, *md, **mrq; |
806 | caddr_t dpos; | |
807 | struct ucred *cred; | |
e8540f59 KM |
808 | u_long xid; |
809 | int *repstat; | |
971b93e3 | 810 | { |
ffe6f482 KM |
811 | struct nameidata nami; |
812 | register struct nameidata *ndp = &nami; | |
0bd503ad KM |
813 | register u_long *p; |
814 | register long t1; | |
815 | caddr_t bpos; | |
816 | int error = 0; | |
817 | char *cp2; | |
e8540f59 | 818 | struct mbuf *mb, *mreq; |
971b93e3 KM |
819 | struct vnode *vp, *xp; |
820 | nfsv2fh_t nfh, dnfh; | |
821 | fhandle_t *fhp, *dfhp; | |
822 | long len; | |
823 | ||
ffe6f482 | 824 | ndinit(ndp); |
971b93e3 KM |
825 | fhp = &nfh.fh_generic; |
826 | dfhp = &dnfh.fh_generic; | |
827 | nfsm_srvmtofh(fhp); | |
828 | nfsm_srvmtofh(dfhp); | |
829 | nfsm_srvstrsiz(len, NFS_MAXNAMLEN); | |
830 | if (error = nfsrv_fhtovp(fhp, FALSE, &vp, cred)) | |
831 | nfsm_reply(0); | |
832 | if (vp->v_type == VDIR && (error = suser(cred, NULL))) | |
833 | goto out1; | |
834 | ndp->ni_cred = cred; | |
835 | ndp->ni_nameiop = CREATE | LOCKPARENT; | |
971b93e3 KM |
836 | if (error = nfs_namei(ndp, dfhp, len, &md, &dpos)) |
837 | goto out1; | |
838 | xp = ndp->ni_vp; | |
839 | if (xp != NULL) { | |
840 | error = EEXIST; | |
841 | goto out; | |
842 | } | |
843 | xp = ndp->ni_dvp; | |
844 | if (vp->v_mount != xp->v_mount) | |
845 | error = EXDEV; | |
846 | out: | |
66955caf | 847 | if (!error) { |
971b93e3 | 848 | error = VOP_LINK(vp, ndp); |
66955caf KM |
849 | } else { |
850 | VOP_ABORTOP(ndp); | |
639383fa KM |
851 | if (ndp->ni_dvp == ndp->ni_vp) |
852 | vrele(ndp->ni_dvp); | |
853 | else | |
854 | vput(ndp->ni_dvp); | |
66955caf KM |
855 | if (ndp->ni_vp) |
856 | vrele(ndp->ni_vp); | |
857 | } | |
971b93e3 KM |
858 | out1: |
859 | vrele(vp); | |
860 | nfsm_reply(0); | |
861 | nfsm_srvdone; | |
862 | } | |
863 | ||
864 | /* | |
865 | * nfs symbolic link service | |
866 | */ | |
e8540f59 | 867 | nfsrv_symlink(mrep, md, dpos, cred, xid, mrq, repstat) |
971b93e3 KM |
868 | struct mbuf *mrep, *md, **mrq; |
869 | caddr_t dpos; | |
870 | struct ucred *cred; | |
e8540f59 KM |
871 | u_long xid; |
872 | int *repstat; | |
971b93e3 KM |
873 | { |
874 | struct vattr va; | |
ffe6f482 KM |
875 | struct nameidata nami; |
876 | register struct nameidata *ndp = &nami; | |
971b93e3 | 877 | register struct vattr *vap = &va; |
0bd503ad KM |
878 | register u_long *p; |
879 | register long t1; | |
09e56da6 | 880 | struct nfsv2_sattr *sp; |
0bd503ad | 881 | caddr_t bpos; |
f0f1cbaa KM |
882 | struct uio io; |
883 | struct iovec iv; | |
0bd503ad | 884 | int error = 0; |
f0f1cbaa | 885 | char *pathcp, *cp2; |
e8540f59 | 886 | struct mbuf *mb, *mreq; |
971b93e3 KM |
887 | nfsv2fh_t nfh; |
888 | fhandle_t *fhp; | |
d4e5799e | 889 | long len, len2; |
971b93e3 | 890 | |
f0f1cbaa | 891 | pathcp = (char *)0; |
ffe6f482 | 892 | ndinit(ndp); |
971b93e3 KM |
893 | fhp = &nfh.fh_generic; |
894 | nfsm_srvmtofh(fhp); | |
895 | nfsm_srvstrsiz(len, NFS_MAXNAMLEN); | |
896 | ndp->ni_cred = cred; | |
897 | ndp->ni_nameiop = CREATE | LOCKPARENT; | |
971b93e3 | 898 | if (error = nfs_namei(ndp, fhp, len, &md, &dpos)) |
66955caf | 899 | goto out; |
f0f1cbaa KM |
900 | nfsm_strsiz(len2, NFS_MAXPATHLEN); |
901 | MALLOC(pathcp, caddr_t, len2 + 1, M_TEMP, M_WAITOK); | |
902 | iv.iov_base = pathcp; | |
903 | iv.iov_len = len2; | |
904 | io.uio_resid = len2; | |
905 | io.uio_offset = 0; | |
906 | io.uio_iov = &iv; | |
907 | io.uio_iovcnt = 1; | |
908 | io.uio_segflg = UIO_SYSSPACE; | |
909 | io.uio_rw = UIO_READ; | |
910 | nfsm_mtouio(&io, len2); | |
09e56da6 | 911 | nfsm_disect(sp, struct nfsv2_sattr *, NFSX_SATTR); |
f0f1cbaa | 912 | *(pathcp + len2) = '\0'; |
66955caf KM |
913 | if (ndp->ni_vp) { |
914 | VOP_ABORTOP(ndp); | |
639383fa KM |
915 | if (ndp->ni_dvp == ndp->ni_vp) |
916 | vrele(ndp->ni_dvp); | |
917 | else | |
918 | vput(ndp->ni_dvp); | |
66955caf | 919 | vrele(ndp->ni_vp); |
971b93e3 KM |
920 | error = EEXIST; |
921 | goto out; | |
922 | } | |
3ee1461b | 923 | VATTR_NULL(vap); |
09e56da6 | 924 | vap->va_mode = fxdr_unsigned(u_short, sp->sa_mode); |
66955caf | 925 | error = VOP_SYMLINK(ndp, vap, pathcp); |
971b93e3 | 926 | out: |
f0f1cbaa KM |
927 | if (pathcp) |
928 | FREE(pathcp, M_TEMP); | |
971b93e3 KM |
929 | nfsm_reply(0); |
930 | return (error); | |
931 | nfsmout: | |
932 | VOP_ABORTOP(ndp); | |
639383fa KM |
933 | if (ndp->ni_dvp == ndp->ni_vp) |
934 | vrele(ndp->ni_dvp); | |
935 | else | |
936 | vput(ndp->ni_dvp); | |
66955caf KM |
937 | if (ndp->ni_vp); |
938 | vrele(ndp->ni_vp); | |
f0f1cbaa KM |
939 | if (pathcp) |
940 | FREE(pathcp, M_TEMP); | |
971b93e3 KM |
941 | return (error); |
942 | } | |
943 | ||
944 | /* | |
945 | * nfs mkdir service | |
946 | */ | |
e8540f59 | 947 | nfsrv_mkdir(mrep, md, dpos, cred, xid, mrq, repstat) |
971b93e3 KM |
948 | struct mbuf *mrep, *md, **mrq; |
949 | caddr_t dpos; | |
950 | struct ucred *cred; | |
e8540f59 KM |
951 | u_long xid; |
952 | int *repstat; | |
971b93e3 KM |
953 | { |
954 | struct vattr va; | |
955 | register struct vattr *vap = &va; | |
9238aa59 | 956 | register struct nfsv2_fattr *fp; |
ffe6f482 KM |
957 | struct nameidata nami; |
958 | register struct nameidata *ndp = &nami; | |
0bd503ad KM |
959 | register caddr_t cp; |
960 | register u_long *p; | |
961 | register long t1; | |
962 | caddr_t bpos; | |
963 | int error = 0; | |
964 | char *cp2; | |
e8540f59 | 965 | struct mbuf *mb, *mb2, *mreq; |
971b93e3 KM |
966 | struct vnode *vp; |
967 | nfsv2fh_t nfh; | |
968 | fhandle_t *fhp; | |
969 | long len; | |
970 | ||
ffe6f482 | 971 | ndinit(ndp); |
971b93e3 KM |
972 | fhp = &nfh.fh_generic; |
973 | nfsm_srvmtofh(fhp); | |
974 | nfsm_srvstrsiz(len, NFS_MAXNAMLEN); | |
975 | ndp->ni_cred = cred; | |
10bae9ee | 976 | ndp->ni_nameiop = CREATE | LOCKPARENT | SAVESTARTDIR; |
971b93e3 KM |
977 | if (error = nfs_namei(ndp, fhp, len, &md, &dpos)) |
978 | nfsm_reply(0); | |
979 | nfsm_disect(p, u_long *, NFSX_UNSIGNED); | |
3ee1461b | 980 | VATTR_NULL(vap); |
971b93e3 KM |
981 | vap->va_type = VDIR; |
982 | vap->va_mode = nfstov_mode(*p++); | |
983 | vp = ndp->ni_vp; | |
984 | if (vp != NULL) { | |
985 | VOP_ABORTOP(ndp); | |
639383fa KM |
986 | if (ndp->ni_dvp == vp) |
987 | vrele(ndp->ni_dvp); | |
988 | else | |
989 | vput(ndp->ni_dvp); | |
66955caf | 990 | vrele(vp); |
10bae9ee | 991 | vrele(ndp->ni_startdir); |
971b93e3 KM |
992 | error = EEXIST; |
993 | nfsm_reply(0); | |
994 | } | |
10bae9ee KM |
995 | error = VOP_MKDIR(ndp, vap); |
996 | vrele(ndp->ni_startdir); | |
997 | if (error) | |
971b93e3 KM |
998 | nfsm_reply(0); |
999 | vp = ndp->ni_vp; | |
1000 | bzero((caddr_t)fhp, sizeof(nfh)); | |
54fb9dc2 | 1001 | fhp->fh_fsid = vp->v_mount->mnt_stat.f_fsid; |
971b93e3 KM |
1002 | if (error = VFS_VPTOFH(vp, &fhp->fh_fid)) { |
1003 | vput(vp); | |
1004 | nfsm_reply(0); | |
1005 | } | |
1006 | error = VOP_GETATTR(vp, vap, cred); | |
1007 | vput(vp); | |
1008 | nfsm_reply(NFSX_FH+NFSX_FATTR); | |
1009 | nfsm_srvfhtom(fhp); | |
9238aa59 | 1010 | nfsm_build(fp, struct nfsv2_fattr *, NFSX_FATTR); |
e8540f59 | 1011 | nfsm_srvfillattr; |
971b93e3 KM |
1012 | return (error); |
1013 | nfsmout: | |
1014 | VOP_ABORTOP(ndp); | |
639383fa KM |
1015 | if (ndp->ni_dvp == ndp->ni_vp) |
1016 | vrele(ndp->ni_dvp); | |
1017 | else | |
1018 | vput(ndp->ni_dvp); | |
66955caf KM |
1019 | if (ndp->ni_vp) |
1020 | vrele(ndp->ni_vp); | |
971b93e3 KM |
1021 | return (error); |
1022 | } | |
1023 | ||
1024 | /* | |
1025 | * nfs rmdir service | |
1026 | */ | |
e8540f59 | 1027 | nfsrv_rmdir(mrep, md, dpos, cred, xid, mrq, repstat) |
971b93e3 KM |
1028 | struct mbuf *mrep, *md, **mrq; |
1029 | caddr_t dpos; | |
1030 | struct ucred *cred; | |
e8540f59 KM |
1031 | u_long xid; |
1032 | int *repstat; | |
971b93e3 | 1033 | { |
ffe6f482 KM |
1034 | struct nameidata nami; |
1035 | register struct nameidata *ndp = &nami; | |
0bd503ad KM |
1036 | register u_long *p; |
1037 | register long t1; | |
1038 | caddr_t bpos; | |
1039 | int error = 0; | |
1040 | char *cp2; | |
e8540f59 | 1041 | struct mbuf *mb, *mreq; |
971b93e3 KM |
1042 | struct vnode *vp; |
1043 | nfsv2fh_t nfh; | |
1044 | fhandle_t *fhp; | |
1045 | long len; | |
1046 | ||
ffe6f482 | 1047 | ndinit(ndp); |
971b93e3 KM |
1048 | fhp = &nfh.fh_generic; |
1049 | nfsm_srvmtofh(fhp); | |
1050 | nfsm_srvstrsiz(len, NFS_MAXNAMLEN); | |
1051 | ndp->ni_cred = cred; | |
1052 | ndp->ni_nameiop = DELETE | LOCKPARENT | LOCKLEAF; | |
971b93e3 KM |
1053 | if (error = nfs_namei(ndp, fhp, len, &md, &dpos)) |
1054 | nfsm_reply(0); | |
1055 | vp = ndp->ni_vp; | |
1056 | if (vp->v_type != VDIR) { | |
1057 | error = ENOTDIR; | |
1058 | goto out; | |
1059 | } | |
1060 | /* | |
1061 | * No rmdir "." please. | |
1062 | */ | |
1063 | if (ndp->ni_dvp == vp) { | |
1064 | error = EINVAL; | |
1065 | goto out; | |
1066 | } | |
1067 | /* | |
1068 | * Don't unlink a mounted file. | |
1069 | */ | |
1070 | if (vp->v_flag & VROOT) | |
1071 | error = EBUSY; | |
1072 | out: | |
66955caf | 1073 | if (!error) { |
971b93e3 | 1074 | error = VOP_RMDIR(ndp); |
66955caf KM |
1075 | } else { |
1076 | VOP_ABORTOP(ndp); | |
639383fa KM |
1077 | if (ndp->ni_dvp == ndp->ni_vp) |
1078 | vrele(ndp->ni_dvp); | |
1079 | else | |
1080 | vput(ndp->ni_dvp); | |
66955caf KM |
1081 | vput(vp); |
1082 | } | |
971b93e3 KM |
1083 | nfsm_reply(0); |
1084 | nfsm_srvdone; | |
1085 | } | |
1086 | ||
1087 | /* | |
1088 | * nfs readdir service | |
1089 | * - mallocs what it thinks is enough to read | |
f0f1cbaa | 1090 | * count rounded up to a multiple of DIRBLKSIZ <= NFS_MAXREADDIR |
971b93e3 | 1091 | * - calls VOP_READDIR() |
732aefe9 | 1092 | * - loops around building the reply |
36c3043b KM |
1093 | * if the output generated exceeds count break out of loop |
1094 | * The nfsm_clget macro is used here so that the reply will be packed | |
1095 | * tightly in mbuf clusters. | |
971b93e3 | 1096 | * - it only knows that it has encountered eof when the VOP_READDIR() |
36c3043b | 1097 | * reads nothing |
971b93e3 | 1098 | * - as such one readdir rpc will return eof false although you are there |
36c3043b | 1099 | * and then the next will return eof |
971b93e3 | 1100 | * - it trims out records with d_ino == 0 |
36c3043b KM |
1101 | * this doesn't matter for Unix clients, but they might confuse clients |
1102 | * for other os'. | |
971b93e3 | 1103 | * NB: It is tempting to set eof to true if the VOP_READDIR() reads less |
36c3043b KM |
1104 | * than requested, but this may not apply to all filesystems. For |
1105 | * example, client NFS does not { although it is never remote mounted | |
1106 | * anyhow } | |
971b93e3 | 1107 | * PS: The NFS protocol spec. does not clarify what the "count" byte |
36c3043b KM |
1108 | * argument is a count of.. just name strings and file id's or the |
1109 | * entire reply rpc or ... | |
1110 | * I tried just file name and id sizes and it confused the Sun client, | |
1111 | * so I am using the full rpc size now. The "paranoia.." comment refers | |
1112 | * to including the status longwords that are not a part of the dir. | |
1113 | * "entry" structures, but are in the rpc. | |
971b93e3 | 1114 | */ |
e8540f59 | 1115 | nfsrv_readdir(mrep, md, dpos, cred, xid, mrq, repstat) |
971b93e3 KM |
1116 | struct mbuf **mrq; |
1117 | struct mbuf *mrep, *md; | |
1118 | caddr_t dpos; | |
1119 | struct ucred *cred; | |
1120 | u_long xid; | |
e8540f59 | 1121 | int *repstat; |
971b93e3 KM |
1122 | { |
1123 | register char *bp, *be; | |
1124 | register struct mbuf *mp; | |
1125 | register struct direct *dp; | |
0bd503ad KM |
1126 | register caddr_t cp; |
1127 | register u_long *p; | |
1128 | register long t1; | |
1129 | caddr_t bpos; | |
1130 | int error = 0; | |
1131 | char *cp2; | |
e8540f59 | 1132 | struct mbuf *mb, *mb2, *mreq; |
971b93e3 KM |
1133 | char *cpos, *cend; |
1134 | int len, nlen, rem, xfer, tsiz, i; | |
1135 | struct vnode *vp; | |
1136 | struct mbuf *mp2, *mp3; | |
1137 | nfsv2fh_t nfh; | |
1138 | fhandle_t *fhp; | |
1139 | struct uio io; | |
1140 | struct iovec iv; | |
e49b1a6c | 1141 | int siz, cnt, fullsiz, eofflag; |
971b93e3 KM |
1142 | u_long on; |
1143 | char *rbuf; | |
1144 | off_t off, toff; | |
1145 | ||
1146 | fhp = &nfh.fh_generic; | |
1147 | nfsm_srvmtofh(fhp); | |
1148 | nfsm_disect(p, u_long *, 2*NFSX_UNSIGNED); | |
1149 | toff = fxdr_unsigned(off_t, *p++); | |
1150 | off = (toff & ~(DIRBLKSIZ-1)); | |
1151 | on = (toff & (DIRBLKSIZ-1)); | |
1152 | cnt = fxdr_unsigned(int, *p); | |
f0f1cbaa KM |
1153 | siz = ((cnt+DIRBLKSIZ-1) & ~(DIRBLKSIZ-1)); |
1154 | if (cnt > NFS_MAXREADDIR) | |
1155 | siz = NFS_MAXREADDIR; | |
971b93e3 KM |
1156 | fullsiz = siz; |
1157 | if (error = nfsrv_fhtovp(fhp, TRUE, &vp, cred)) | |
1158 | nfsm_reply(0); | |
24ed1a73 | 1159 | if (error = nfsrv_access(vp, VEXEC, cred)) { |
971b93e3 KM |
1160 | vput(vp); |
1161 | nfsm_reply(0); | |
1162 | } | |
1163 | VOP_UNLOCK(vp); | |
1164 | MALLOC(rbuf, caddr_t, siz, M_TEMP, M_WAITOK); | |
1165 | again: | |
1166 | iv.iov_base = rbuf; | |
1167 | iv.iov_len = fullsiz; | |
1168 | io.uio_iov = &iv; | |
1169 | io.uio_iovcnt = 1; | |
1170 | io.uio_offset = off; | |
1171 | io.uio_resid = fullsiz; | |
1172 | io.uio_segflg = UIO_SYSSPACE; | |
1173 | io.uio_rw = UIO_READ; | |
e49b1a6c | 1174 | error = VOP_READDIR(vp, &io, cred, &eofflag); |
e9843ca3 | 1175 | off = io.uio_offset; |
971b93e3 KM |
1176 | if (error) { |
1177 | vrele(vp); | |
1178 | free((caddr_t)rbuf, M_TEMP); | |
1179 | nfsm_reply(0); | |
1180 | } | |
1181 | if (io.uio_resid) { | |
1182 | siz -= io.uio_resid; | |
1183 | ||
1184 | /* | |
1185 | * If nothing read, return eof | |
1186 | * rpc reply | |
1187 | */ | |
1188 | if (siz == 0) { | |
1189 | vrele(vp); | |
1190 | nfsm_reply(2*NFSX_UNSIGNED); | |
1191 | nfsm_build(p, u_long *, 2*NFSX_UNSIGNED); | |
1192 | *p++ = nfs_false; | |
1193 | *p = nfs_true; | |
1194 | FREE((caddr_t)rbuf, M_TEMP); | |
1195 | return (0); | |
1196 | } | |
1197 | } | |
732aefe9 | 1198 | |
971b93e3 KM |
1199 | /* |
1200 | * Check for degenerate cases of nothing useful read. | |
732aefe9 | 1201 | * If so go try again |
971b93e3 | 1202 | */ |
732aefe9 KM |
1203 | cpos = rbuf + on; |
1204 | cend = rbuf + siz; | |
1205 | dp = (struct direct *)cpos; | |
1206 | while (cpos < cend && dp->d_ino == 0) { | |
1207 | cpos += dp->d_reclen; | |
1208 | dp = (struct direct *)cpos; | |
1209 | } | |
1210 | if (cpos >= cend) { | |
971b93e3 KM |
1211 | toff = off; |
1212 | siz = fullsiz; | |
1213 | on = 0; | |
1214 | goto again; | |
1215 | } | |
732aefe9 KM |
1216 | |
1217 | cpos = rbuf + on; | |
1218 | cend = rbuf + siz; | |
1219 | dp = (struct direct *)cpos; | |
971b93e3 | 1220 | vrele(vp); |
36c3043b | 1221 | len = 3*NFSX_UNSIGNED; /* paranoia, probably can be 0 */ |
971b93e3 KM |
1222 | bp = be = (caddr_t)0; |
1223 | mp3 = (struct mbuf *)0; | |
1224 | nfsm_reply(siz); | |
1225 | ||
1226 | /* Loop through the records and build reply */ | |
1227 | while (cpos < cend) { | |
1228 | if (dp->d_ino != 0) { | |
1229 | nlen = dp->d_namlen; | |
1230 | rem = nfsm_rndup(nlen)-nlen; | |
36c3043b | 1231 | |
971b93e3 KM |
1232 | /* |
1233 | * As noted above, the NFS spec. is not clear about what | |
1234 | * should be included in "count" as totalled up here in | |
1235 | * "len". | |
1236 | */ | |
1237 | len += (4*NFSX_UNSIGNED+nlen+rem); | |
f0f1cbaa KM |
1238 | if (len > cnt) { |
1239 | eofflag = 0; | |
971b93e3 | 1240 | break; |
f0f1cbaa | 1241 | } |
36c3043b | 1242 | |
971b93e3 KM |
1243 | /* Build the directory record xdr from the direct entry */ |
1244 | nfsm_clget; | |
1245 | *p = nfs_true; | |
1246 | bp += NFSX_UNSIGNED; | |
1247 | nfsm_clget; | |
1248 | *p = txdr_unsigned(dp->d_ino); | |
1249 | bp += NFSX_UNSIGNED; | |
1250 | nfsm_clget; | |
1251 | *p = txdr_unsigned(nlen); | |
1252 | bp += NFSX_UNSIGNED; | |
36c3043b | 1253 | |
971b93e3 KM |
1254 | /* And loop arround copying the name */ |
1255 | xfer = nlen; | |
1256 | cp = dp->d_name; | |
1257 | while (xfer > 0) { | |
1258 | nfsm_clget; | |
1259 | if ((bp+xfer) > be) | |
1260 | tsiz = be-bp; | |
1261 | else | |
1262 | tsiz = xfer; | |
1263 | bcopy(cp, bp, tsiz); | |
1264 | bp += tsiz; | |
1265 | xfer -= tsiz; | |
1266 | if (xfer > 0) | |
1267 | cp += tsiz; | |
1268 | } | |
1269 | /* And null pad to a long boundary */ | |
1270 | for (i = 0; i < rem; i++) | |
1271 | *bp++ = '\0'; | |
1272 | nfsm_clget; | |
36c3043b | 1273 | |
971b93e3 KM |
1274 | /* Finish off the record */ |
1275 | toff += dp->d_reclen; | |
1276 | *p = txdr_unsigned(toff); | |
1277 | bp += NFSX_UNSIGNED; | |
1278 | } else | |
1279 | toff += dp->d_reclen; | |
1280 | cpos += dp->d_reclen; | |
1281 | dp = (struct direct *)cpos; | |
1282 | } | |
1283 | nfsm_clget; | |
1284 | *p = nfs_false; | |
1285 | bp += NFSX_UNSIGNED; | |
1286 | nfsm_clget; | |
e49b1a6c KM |
1287 | if (eofflag) |
1288 | *p = nfs_true; | |
1289 | else | |
1290 | *p = nfs_false; | |
971b93e3 KM |
1291 | bp += NFSX_UNSIGNED; |
1292 | if (bp < be) | |
1293 | mp->m_len = bp-mtod(mp, caddr_t); | |
1294 | mb->m_next = mp3; | |
1295 | FREE(rbuf, M_TEMP); | |
1296 | nfsm_srvdone; | |
1297 | } | |
1298 | ||
1299 | /* | |
1300 | * nfs statfs service | |
1301 | */ | |
e8540f59 | 1302 | nfsrv_statfs(mrep, md, dpos, cred, xid, mrq, repstat) |
971b93e3 KM |
1303 | struct mbuf **mrq; |
1304 | struct mbuf *mrep, *md; | |
1305 | caddr_t dpos; | |
1306 | struct ucred *cred; | |
1307 | u_long xid; | |
e8540f59 | 1308 | int *repstat; |
971b93e3 KM |
1309 | { |
1310 | register struct statfs *sf; | |
9238aa59 | 1311 | register struct nfsv2_statfs *sfp; |
0bd503ad KM |
1312 | register u_long *p; |
1313 | register long t1; | |
1314 | caddr_t bpos; | |
1315 | int error = 0; | |
1316 | char *cp2; | |
e8540f59 | 1317 | struct mbuf *mb, *mb2, *mreq; |
971b93e3 KM |
1318 | struct vnode *vp; |
1319 | nfsv2fh_t nfh; | |
1320 | fhandle_t *fhp; | |
1321 | struct statfs statfs; | |
1322 | ||
1323 | fhp = &nfh.fh_generic; | |
1324 | nfsm_srvmtofh(fhp); | |
1325 | if (error = nfsrv_fhtovp(fhp, TRUE, &vp, cred)) | |
1326 | nfsm_reply(0); | |
1327 | sf = &statfs; | |
1328 | error = VFS_STATFS(vp->v_mount, sf); | |
1329 | vput(vp); | |
1330 | nfsm_reply(NFSX_STATFS); | |
9238aa59 | 1331 | nfsm_build(sfp, struct nfsv2_statfs *, NFSX_STATFS); |
b28c3bcc | 1332 | sfp->sf_tsize = txdr_unsigned(NFS_MAXDGRAMDATA); |
9238aa59 RM |
1333 | sfp->sf_bsize = txdr_unsigned(sf->f_fsize); |
1334 | sfp->sf_blocks = txdr_unsigned(sf->f_blocks); | |
1335 | sfp->sf_bfree = txdr_unsigned(sf->f_bfree); | |
1336 | sfp->sf_bavail = txdr_unsigned(sf->f_bavail); | |
971b93e3 KM |
1337 | nfsm_srvdone; |
1338 | } | |
1339 | ||
1340 | /* | |
1341 | * Null operation, used by clients to ping server | |
1342 | */ | |
0bd503ad | 1343 | /* ARGSUSED */ |
e8540f59 | 1344 | nfsrv_null(mrep, md, dpos, cred, xid, mrq, repstat) |
971b93e3 KM |
1345 | struct mbuf **mrq; |
1346 | struct mbuf *mrep, *md; | |
1347 | caddr_t dpos; | |
1348 | struct ucred *cred; | |
1349 | u_long xid; | |
e8540f59 | 1350 | int *repstat; |
971b93e3 | 1351 | { |
0bd503ad KM |
1352 | caddr_t bpos; |
1353 | int error = 0; | |
e8540f59 | 1354 | struct mbuf *mb, *mreq; |
971b93e3 KM |
1355 | |
1356 | error = VNOVAL; | |
1357 | nfsm_reply(0); | |
0bd503ad | 1358 | return (error); |
971b93e3 KM |
1359 | } |
1360 | ||
1361 | /* | |
1362 | * No operation, used for obsolete procedures | |
1363 | */ | |
0bd503ad | 1364 | /* ARGSUSED */ |
e8540f59 | 1365 | nfsrv_noop(mrep, md, dpos, cred, xid, mrq, repstat) |
971b93e3 KM |
1366 | struct mbuf **mrq; |
1367 | struct mbuf *mrep, *md; | |
1368 | caddr_t dpos; | |
1369 | struct ucred *cred; | |
1370 | u_long xid; | |
e8540f59 | 1371 | int *repstat; |
971b93e3 | 1372 | { |
0bd503ad KM |
1373 | caddr_t bpos; |
1374 | int error = 0; | |
e8540f59 | 1375 | struct mbuf *mb, *mreq; |
971b93e3 KM |
1376 | |
1377 | error = EPROCUNAVAIL; | |
1378 | nfsm_reply(0); | |
0bd503ad | 1379 | return (error); |
971b93e3 | 1380 | } |
36c3043b | 1381 | |
24ed1a73 KM |
1382 | /* |
1383 | * Perform access checking for vnodes obtained from file handles that would | |
1384 | * refer to files already opened by a Unix client. You cannot just use | |
1385 | * vn_writechk() and VOP_ACCESS() for two reasons. | |
54fb9dc2 | 1386 | * 1 - You must check for MNT_EXRDONLY as well as MNT_RDONLY for the write case |
24ed1a73 KM |
1387 | * 2 - The owner is to be given access irrespective of mode bits so that |
1388 | * processes that chmod after opening a file don't break. I don't like | |
1389 | * this because it opens a security hole, but since the nfs server opens | |
1390 | * a security hole the size of a barn door anyhow, what the heck. | |
1391 | */ | |
1392 | nfsrv_access(vp, flags, cred) | |
1393 | register struct vnode *vp; | |
1394 | int flags; | |
1395 | register struct ucred *cred; | |
1396 | { | |
1397 | struct vattr vattr; | |
1398 | int error; | |
1399 | if (flags & VWRITE) { | |
54fb9dc2 | 1400 | /* Just vn_writechk() changed to check MNT_EXRDONLY */ |
24ed1a73 KM |
1401 | /* |
1402 | * Disallow write attempts on read-only file systems; | |
1403 | * unless the file is a socket or a block or character | |
1404 | * device resident on the file system. | |
1405 | */ | |
fef23149 KM |
1406 | if (vp->v_mount->mnt_flag & (MNT_RDONLY | MNT_EXRDONLY)) { |
1407 | switch (vp->v_type) { | |
1408 | case VREG: case VDIR: case VLNK: | |
24ed1a73 | 1409 | return (EROFS); |
fef23149 KM |
1410 | } |
1411 | } | |
24ed1a73 KM |
1412 | /* |
1413 | * If there's shared text associated with | |
1414 | * the inode, try to free it up once. If | |
1415 | * we fail, we can't allow writing. | |
1416 | */ | |
3329d91f | 1417 | #ifdef NVM |
8986c97c | 1418 | if ((vp->v_flag & VTEXT) && !vnode_pager_uncache(vp)) |
24ed1a73 | 1419 | return (ETXTBSY); |
3329d91f KM |
1420 | #else |
1421 | if (vp->v_flag & VTEXT) | |
1422 | xrele(vp); | |
1423 | if (vp->v_flag & VTEXT) | |
1424 | return (ETXTBSY); | |
1425 | #endif | |
24ed1a73 | 1426 | } |
fef23149 KM |
1427 | if (error = VOP_GETATTR(vp, &vattr, cred)) |
1428 | return (error); | |
1429 | if ((error = VOP_ACCESS(vp, flags, cred)) && | |
1430 | cred->cr_uid != vattr.va_uid) | |
1431 | return (error); | |
1432 | return (0); | |
24ed1a73 | 1433 | } |