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 | * |
982c504e | 10 | * @(#)nfs_serv.c 7.41 (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" |
74c40d5a | 32 | #include "proc.h" |
e587d97d | 33 | #include "file.h" |
236c2c19 | 34 | #include "namei.h" |
971b93e3 | 35 | #include "vnode.h" |
e587d97d KM |
36 | #include "mount.h" |
37 | #include "mbuf.h" | |
058dee65 | 38 | |
982c504e KB |
39 | #include "ufs/ufs/quota.h" |
40 | #include "ufs/ufs/inode.h" | |
41 | #include "ufs/ufs/dir.h" | |
058dee65 | 42 | |
971b93e3 KM |
43 | #include "nfsv2.h" |
44 | #include "nfs.h" | |
45 | #include "xdr_subs.h" | |
46 | #include "nfsm_subs.h" | |
47 | ||
48 | /* Defs */ | |
36c3043b KM |
49 | #define TRUE 1 |
50 | #define FALSE 0 | |
971b93e3 KM |
51 | |
52 | /* Global vars */ | |
53 | extern u_long nfs_procids[NFS_NPROCS]; | |
54 | extern u_long nfs_xdrneg1; | |
55 | extern u_long nfs_false, nfs_true; | |
d4e5799e KM |
56 | nfstype nfs_type[9]={ NFNON, NFREG, NFDIR, NFBLK, NFCHR, NFLNK, NFNON, |
57 | NFCHR, NFNON }; | |
971b93e3 KM |
58 | |
59 | /* | |
60 | * nfs getattr service | |
61 | */ | |
236c2c19 | 62 | nfsrv_getattr(mrep, md, dpos, cred, xid, mrq, repstat, p) |
971b93e3 KM |
63 | struct mbuf **mrq; |
64 | struct mbuf *mrep, *md; | |
65 | caddr_t dpos; | |
66 | struct ucred *cred; | |
67 | u_long xid; | |
e8540f59 | 68 | int *repstat; |
236c2c19 | 69 | struct proc *p; |
971b93e3 | 70 | { |
9238aa59 | 71 | register struct nfsv2_fattr *fp; |
971b93e3 KM |
72 | struct vattr va; |
73 | register struct vattr *vap = &va; | |
74 | struct vnode *vp; | |
75 | nfsv2fh_t nfh; | |
76 | fhandle_t *fhp; | |
236c2c19 | 77 | register u_long *tl; |
0bd503ad KM |
78 | register long t1; |
79 | caddr_t bpos; | |
80 | int error = 0; | |
81 | char *cp2; | |
e8540f59 | 82 | struct mbuf *mb, *mb2, *mreq; |
971b93e3 KM |
83 | |
84 | fhp = &nfh.fh_generic; | |
85 | nfsm_srvmtofh(fhp); | |
86 | if (error = nfsrv_fhtovp(fhp, TRUE, &vp, cred)) | |
87 | nfsm_reply(0); | |
236c2c19 | 88 | error = VOP_GETATTR(vp, vap, cred, p); |
971b93e3 KM |
89 | vput(vp); |
90 | nfsm_reply(NFSX_FATTR); | |
9238aa59 | 91 | nfsm_build(fp, struct nfsv2_fattr *, NFSX_FATTR); |
e8540f59 | 92 | nfsm_srvfillattr; |
971b93e3 KM |
93 | nfsm_srvdone; |
94 | } | |
95 | ||
96 | /* | |
97 | * nfs setattr service | |
98 | */ | |
236c2c19 | 99 | nfsrv_setattr(mrep, md, dpos, cred, xid, mrq, repstat, p) |
971b93e3 KM |
100 | struct mbuf **mrq; |
101 | struct mbuf *mrep, *md; | |
102 | caddr_t dpos; | |
103 | struct ucred *cred; | |
104 | u_long xid; | |
e8540f59 | 105 | int *repstat; |
236c2c19 | 106 | struct proc *p; |
971b93e3 KM |
107 | { |
108 | struct vattr va; | |
109 | register struct vattr *vap = &va; | |
9238aa59 RM |
110 | register struct nfsv2_sattr *sp; |
111 | register struct nfsv2_fattr *fp; | |
971b93e3 KM |
112 | struct vnode *vp; |
113 | nfsv2fh_t nfh; | |
114 | fhandle_t *fhp; | |
236c2c19 | 115 | register u_long *tl; |
0bd503ad KM |
116 | register long t1; |
117 | caddr_t bpos; | |
118 | int error = 0; | |
119 | char *cp2; | |
e8540f59 | 120 | struct mbuf *mb, *mb2, *mreq; |
971b93e3 KM |
121 | |
122 | fhp = &nfh.fh_generic; | |
123 | nfsm_srvmtofh(fhp); | |
9238aa59 | 124 | nfsm_disect(sp, struct nfsv2_sattr *, NFSX_SATTR); |
971b93e3 KM |
125 | if (error = nfsrv_fhtovp(fhp, TRUE, &vp, cred)) |
126 | nfsm_reply(0); | |
236c2c19 | 127 | if (error = nfsrv_access(vp, VWRITE, cred, p)) |
971b93e3 | 128 | goto out; |
3ee1461b | 129 | VATTR_NULL(vap); |
971b93e3 KM |
130 | /* |
131 | * Nah nah nah nah na nah | |
132 | * There is a bug in the Sun client that puts 0xffff in the mode | |
133 | * field of sattr when it should put in 0xffffffff. The u_short | |
134 | * doesn't sign extend. | |
135 | * --> check the low order 2 bytes for 0xffff | |
136 | */ | |
9238aa59 RM |
137 | if ((fxdr_unsigned(int, sp->sa_mode) & 0xffff) != 0xffff) |
138 | vap->va_mode = nfstov_mode(sp->sa_mode); | |
139 | if (sp->sa_uid != nfs_xdrneg1) | |
140 | vap->va_uid = fxdr_unsigned(uid_t, sp->sa_uid); | |
141 | if (sp->sa_gid != nfs_xdrneg1) | |
142 | vap->va_gid = fxdr_unsigned(gid_t, sp->sa_gid); | |
e8540f59 | 143 | if (sp->sa_size != nfs_xdrneg1) |
9238aa59 | 144 | vap->va_size = fxdr_unsigned(u_long, sp->sa_size); |
e8540f59 KM |
145 | /* |
146 | * The usec field of sa_atime is overloaded with the va_flags field | |
147 | * for 4.4BSD clients. Hopefully other clients always set both the | |
148 | * sec and usec fields to -1 when not setting the atime. | |
149 | */ | |
150 | if (sp->sa_atime.tv_sec != nfs_xdrneg1) { | |
151 | vap->va_atime.tv_sec = fxdr_unsigned(long, sp->sa_atime.tv_sec); | |
152 | vap->va_atime.tv_usec = 0; | |
36c3043b | 153 | } |
e8540f59 KM |
154 | if (sp->sa_atime.tv_usec != nfs_xdrneg1) |
155 | vap->va_flags = fxdr_unsigned(u_long, sp->sa_atime.tv_usec); | |
9238aa59 RM |
156 | if (sp->sa_mtime.tv_sec != nfs_xdrneg1) |
157 | fxdr_time(&sp->sa_mtime, &vap->va_mtime); | |
236c2c19 | 158 | if (error = VOP_SETATTR(vp, vap, cred, p)) { |
971b93e3 KM |
159 | vput(vp); |
160 | nfsm_reply(0); | |
161 | } | |
236c2c19 | 162 | error = VOP_GETATTR(vp, vap, cred, p); |
971b93e3 KM |
163 | out: |
164 | vput(vp); | |
165 | nfsm_reply(NFSX_FATTR); | |
9238aa59 | 166 | nfsm_build(fp, struct nfsv2_fattr *, NFSX_FATTR); |
e8540f59 | 167 | nfsm_srvfillattr; |
971b93e3 KM |
168 | nfsm_srvdone; |
169 | } | |
170 | ||
171 | /* | |
172 | * nfs lookup rpc | |
173 | */ | |
236c2c19 | 174 | nfsrv_lookup(mrep, md, dpos, cred, xid, mrq, repstat, p) |
971b93e3 KM |
175 | struct mbuf **mrq; |
176 | struct mbuf *mrep, *md; | |
177 | caddr_t dpos; | |
178 | struct ucred *cred; | |
179 | u_long xid; | |
e8540f59 | 180 | int *repstat; |
236c2c19 | 181 | struct proc *p; |
971b93e3 | 182 | { |
9238aa59 | 183 | register struct nfsv2_fattr *fp; |
74c40d5a | 184 | struct nameidata nd; |
971b93e3 KM |
185 | struct vnode *vp; |
186 | nfsv2fh_t nfh; | |
187 | fhandle_t *fhp; | |
0bd503ad | 188 | register caddr_t cp; |
236c2c19 | 189 | register u_long *tl; |
0bd503ad KM |
190 | register long t1; |
191 | caddr_t bpos; | |
192 | int error = 0; | |
193 | char *cp2; | |
e8540f59 | 194 | struct mbuf *mb, *mb2, *mreq; |
971b93e3 KM |
195 | long len; |
196 | struct vattr va, *vap = &va; | |
197 | ||
198 | fhp = &nfh.fh_generic; | |
199 | nfsm_srvmtofh(fhp); | |
200 | nfsm_srvstrsiz(len, NFS_MAXNAMLEN); | |
74c40d5a KM |
201 | nd.ni_cred = cred; |
202 | nd.ni_nameiop = LOOKUP | LOCKLEAF; | |
203 | if (error = nfs_namei(&nd, fhp, len, &md, &dpos, p)) | |
971b93e3 | 204 | nfsm_reply(0); |
74c40d5a | 205 | vp = nd.ni_vp; |
971b93e3 | 206 | bzero((caddr_t)fhp, sizeof(nfh)); |
54fb9dc2 | 207 | fhp->fh_fsid = vp->v_mount->mnt_stat.f_fsid; |
971b93e3 KM |
208 | if (error = VFS_VPTOFH(vp, &fhp->fh_fid)) { |
209 | vput(vp); | |
210 | nfsm_reply(0); | |
211 | } | |
236c2c19 | 212 | error = VOP_GETATTR(vp, vap, cred, p); |
971b93e3 KM |
213 | vput(vp); |
214 | nfsm_reply(NFSX_FH+NFSX_FATTR); | |
215 | nfsm_srvfhtom(fhp); | |
9238aa59 | 216 | nfsm_build(fp, struct nfsv2_fattr *, NFSX_FATTR); |
e8540f59 | 217 | nfsm_srvfillattr; |
971b93e3 KM |
218 | nfsm_srvdone; |
219 | } | |
220 | ||
221 | /* | |
222 | * nfs readlink service | |
223 | */ | |
236c2c19 | 224 | nfsrv_readlink(mrep, md, dpos, cred, xid, mrq, repstat, p) |
971b93e3 KM |
225 | struct mbuf **mrq; |
226 | struct mbuf *mrep, *md; | |
227 | caddr_t dpos; | |
228 | struct ucred *cred; | |
e8540f59 KM |
229 | u_long xid; |
230 | int *repstat; | |
236c2c19 | 231 | struct proc *p; |
971b93e3 | 232 | { |
f0f1cbaa | 233 | struct iovec iv[(NFS_MAXPATHLEN+MLEN-1)/MLEN]; |
971b93e3 KM |
234 | register struct iovec *ivp = iv; |
235 | register struct mbuf *mp; | |
236c2c19 | 236 | register u_long *tl; |
0bd503ad KM |
237 | register long t1; |
238 | caddr_t bpos; | |
239 | int error = 0; | |
240 | char *cp2; | |
e8540f59 | 241 | struct mbuf *mb, *mb2, *mp2, *mp3, *mreq; |
971b93e3 KM |
242 | struct vnode *vp; |
243 | nfsv2fh_t nfh; | |
244 | fhandle_t *fhp; | |
245 | struct uio io, *uiop = &io; | |
246 | int i, tlen, len; | |
247 | ||
248 | fhp = &nfh.fh_generic; | |
249 | nfsm_srvmtofh(fhp); | |
250 | len = 0; | |
251 | i = 0; | |
252 | while (len < NFS_MAXPATHLEN) { | |
253 | MGET(mp, M_WAIT, MT_DATA); | |
f0f1cbaa | 254 | MCLGET(mp, M_WAIT); |
971b93e3 KM |
255 | mp->m_len = NFSMSIZ(mp); |
256 | if (len == 0) | |
257 | mp3 = mp2 = mp; | |
f0f1cbaa | 258 | else { |
971b93e3 | 259 | mp2->m_next = mp; |
f0f1cbaa KM |
260 | mp2 = mp; |
261 | } | |
971b93e3 KM |
262 | if ((len+mp->m_len) > NFS_MAXPATHLEN) { |
263 | mp->m_len = NFS_MAXPATHLEN-len; | |
264 | len = NFS_MAXPATHLEN; | |
265 | } else | |
266 | len += mp->m_len; | |
267 | ivp->iov_base = mtod(mp, caddr_t); | |
268 | ivp->iov_len = mp->m_len; | |
269 | i++; | |
270 | ivp++; | |
271 | } | |
272 | uiop->uio_iov = iv; | |
273 | uiop->uio_iovcnt = i; | |
274 | uiop->uio_offset = 0; | |
275 | uiop->uio_resid = len; | |
276 | uiop->uio_rw = UIO_READ; | |
277 | uiop->uio_segflg = UIO_SYSSPACE; | |
236c2c19 | 278 | uiop->uio_procp = (struct proc *)0; |
971b93e3 KM |
279 | if (error = nfsrv_fhtovp(fhp, TRUE, &vp, cred)) { |
280 | m_freem(mp3); | |
281 | nfsm_reply(0); | |
282 | } | |
283 | if (vp->v_type != VLNK) { | |
284 | error = EINVAL; | |
285 | goto out; | |
286 | } | |
287 | error = VOP_READLINK(vp, uiop, cred); | |
288 | out: | |
289 | vput(vp); | |
290 | if (error) | |
291 | m_freem(mp3); | |
292 | nfsm_reply(NFSX_UNSIGNED); | |
293 | if (uiop->uio_resid > 0) { | |
294 | len -= uiop->uio_resid; | |
295 | tlen = nfsm_rndup(len); | |
296 | nfsm_adj(mp3, NFS_MAXPATHLEN-tlen, tlen-len); | |
297 | } | |
236c2c19 KM |
298 | nfsm_build(tl, u_long *, NFSX_UNSIGNED); |
299 | *tl = txdr_unsigned(len); | |
971b93e3 KM |
300 | mb->m_next = mp3; |
301 | nfsm_srvdone; | |
302 | } | |
303 | ||
304 | /* | |
305 | * nfs read service | |
306 | */ | |
236c2c19 | 307 | nfsrv_read(mrep, md, dpos, cred, xid, mrq, repstat, p) |
971b93e3 KM |
308 | struct mbuf **mrq; |
309 | struct mbuf *mrep, *md; | |
310 | caddr_t dpos; | |
311 | struct ucred *cred; | |
312 | u_long xid; | |
e8540f59 | 313 | int *repstat; |
236c2c19 | 314 | struct proc *p; |
971b93e3 | 315 | { |
170bfd05 KM |
316 | register struct iovec *iv; |
317 | struct iovec *iv2; | |
f0f1cbaa | 318 | register struct mbuf *m; |
9238aa59 | 319 | register struct nfsv2_fattr *fp; |
236c2c19 | 320 | register u_long *tl; |
0bd503ad KM |
321 | register long t1; |
322 | caddr_t bpos; | |
323 | int error = 0; | |
324 | char *cp2; | |
e8540f59 | 325 | struct mbuf *mb, *mb2, *mreq; |
f0f1cbaa | 326 | struct mbuf *m2, *m3; |
971b93e3 KM |
327 | struct vnode *vp; |
328 | nfsv2fh_t nfh; | |
329 | fhandle_t *fhp; | |
330 | struct uio io, *uiop = &io; | |
331 | struct vattr va, *vap = &va; | |
f0f1cbaa | 332 | int i, cnt, len, left, siz, tlen; |
971b93e3 KM |
333 | off_t off; |
334 | ||
335 | fhp = &nfh.fh_generic; | |
336 | nfsm_srvmtofh(fhp); | |
236c2c19 KM |
337 | nfsm_disect(tl, u_long *, NFSX_UNSIGNED); |
338 | off = fxdr_unsigned(off_t, *tl); | |
971b93e3 KM |
339 | nfsm_srvstrsiz(cnt, NFS_MAXDATA); |
340 | if (error = nfsrv_fhtovp(fhp, TRUE, &vp, cred)) | |
341 | nfsm_reply(0); | |
236c2c19 | 342 | if (error = nfsrv_access(vp, VREAD | VEXEC, cred, p)) { |
971b93e3 KM |
343 | vput(vp); |
344 | nfsm_reply(0); | |
345 | } | |
346 | len = left = cnt; | |
f0f1cbaa KM |
347 | /* |
348 | * Generate the mbuf list with the uio_iov ref. to it. | |
349 | */ | |
350 | i = 0; | |
351 | m3 = (struct mbuf *)0; | |
d4e5799e KM |
352 | #ifdef lint |
353 | m2 = (struct mbuf *)0; | |
354 | #endif /* lint */ | |
170bfd05 KM |
355 | MALLOC(iv, struct iovec *, |
356 | ((NFS_MAXDATA+MLEN-1)/MLEN) * sizeof (struct iovec), M_TEMP, | |
357 | M_WAITOK); | |
358 | iv2 = iv; | |
f0f1cbaa KM |
359 | while (left > 0) { |
360 | MGET(m, M_WAIT, MT_DATA); | |
361 | if (left > MINCLSIZE) | |
362 | MCLGET(m, M_WAIT); | |
363 | m->m_len = 0; | |
364 | siz = min(M_TRAILINGSPACE(m), left); | |
365 | m->m_len = siz; | |
170bfd05 KM |
366 | iv->iov_base = mtod(m, caddr_t); |
367 | iv->iov_len = siz; | |
368 | iv++; | |
f0f1cbaa KM |
369 | i++; |
370 | left -= siz; | |
371 | if (m3) { | |
372 | m2->m_next = m; | |
373 | m2 = m; | |
374 | } else | |
375 | m3 = m2 = m; | |
376 | } | |
170bfd05 | 377 | uiop->uio_iov = iv2; |
f0f1cbaa | 378 | uiop->uio_iovcnt = i; |
971b93e3 KM |
379 | uiop->uio_offset = off; |
380 | uiop->uio_resid = cnt; | |
381 | uiop->uio_rw = UIO_READ; | |
382 | uiop->uio_segflg = UIO_SYSSPACE; | |
236c2c19 | 383 | uiop->uio_procp = (struct proc *)0; |
e9843ca3 KM |
384 | error = VOP_READ(vp, uiop, IO_NODELOCKED, cred); |
385 | off = uiop->uio_offset; | |
170bfd05 | 386 | FREE((caddr_t)iv2, M_TEMP); |
971b93e3 | 387 | if (error) { |
f0f1cbaa | 388 | m_freem(m3); |
971b93e3 KM |
389 | vput(vp); |
390 | nfsm_reply(0); | |
391 | } | |
236c2c19 | 392 | if (error = VOP_GETATTR(vp, vap, cred, p)) |
f0f1cbaa | 393 | m_freem(m3); |
971b93e3 KM |
394 | vput(vp); |
395 | nfsm_reply(NFSX_FATTR+NFSX_UNSIGNED); | |
9238aa59 | 396 | nfsm_build(fp, struct nfsv2_fattr *, NFSX_FATTR); |
e8540f59 | 397 | nfsm_srvfillattr; |
25951042 KM |
398 | len -= uiop->uio_resid; |
399 | if (len > 0) { | |
400 | tlen = nfsm_rndup(len); | |
401 | if (cnt != tlen || tlen != len) | |
f0f1cbaa | 402 | nfsm_adj(m3, cnt-tlen, tlen-len); |
25951042 KM |
403 | } else { |
404 | m_freem(m3); | |
405 | m3 = (struct mbuf *)0; | |
971b93e3 | 406 | } |
236c2c19 KM |
407 | nfsm_build(tl, u_long *, NFSX_UNSIGNED); |
408 | *tl = txdr_unsigned(len); | |
f0f1cbaa | 409 | mb->m_next = m3; |
971b93e3 KM |
410 | nfsm_srvdone; |
411 | } | |
412 | ||
413 | /* | |
414 | * nfs write service | |
415 | */ | |
236c2c19 | 416 | nfsrv_write(mrep, md, dpos, cred, xid, mrq, repstat, p) |
971b93e3 KM |
417 | struct mbuf *mrep, *md, **mrq; |
418 | caddr_t dpos; | |
419 | struct ucred *cred; | |
e8540f59 KM |
420 | u_long xid; |
421 | int *repstat; | |
236c2c19 | 422 | struct proc *p; |
971b93e3 KM |
423 | { |
424 | register struct iovec *ivp; | |
425 | register struct mbuf *mp; | |
9238aa59 | 426 | register struct nfsv2_fattr *fp; |
f0f1cbaa | 427 | struct iovec iv[NFS_MAXIOVEC]; |
971b93e3 KM |
428 | struct vattr va; |
429 | register struct vattr *vap = &va; | |
236c2c19 | 430 | register u_long *tl; |
0bd503ad KM |
431 | register long t1; |
432 | caddr_t bpos; | |
433 | int error = 0; | |
434 | char *cp2; | |
e8540f59 | 435 | struct mbuf *mb, *mb2, *mreq; |
971b93e3 KM |
436 | struct vnode *vp; |
437 | nfsv2fh_t nfh; | |
438 | fhandle_t *fhp; | |
439 | struct uio io, *uiop = &io; | |
440 | off_t off; | |
441 | long siz, len, xfer; | |
442 | ||
443 | fhp = &nfh.fh_generic; | |
444 | nfsm_srvmtofh(fhp); | |
236c2c19 KM |
445 | nfsm_disect(tl, u_long *, 4*NFSX_UNSIGNED); |
446 | off = fxdr_unsigned(off_t, *++tl); | |
447 | tl += 2; | |
448 | len = fxdr_unsigned(long, *tl); | |
971b93e3 KM |
449 | if (len > NFS_MAXDATA || len <= 0) { |
450 | error = EBADRPC; | |
451 | nfsm_reply(0); | |
452 | } | |
453 | if (dpos == (mtod(md, caddr_t)+md->m_len)) { | |
454 | mp = md->m_next; | |
455 | if (mp == NULL) { | |
456 | error = EBADRPC; | |
457 | nfsm_reply(0); | |
458 | } | |
459 | } else { | |
460 | mp = md; | |
461 | siz = dpos-mtod(mp, caddr_t); | |
462 | mp->m_len -= siz; | |
463 | NFSMADV(mp, siz); | |
464 | } | |
465 | if (error = nfsrv_fhtovp(fhp, TRUE, &vp, cred)) | |
466 | nfsm_reply(0); | |
236c2c19 | 467 | if (error = nfsrv_access(vp, VWRITE, cred, p)) { |
971b93e3 KM |
468 | vput(vp); |
469 | nfsm_reply(0); | |
470 | } | |
471 | uiop->uio_resid = 0; | |
472 | uiop->uio_rw = UIO_WRITE; | |
473 | uiop->uio_segflg = UIO_SYSSPACE; | |
236c2c19 | 474 | uiop->uio_procp = (struct proc *)0; |
971b93e3 | 475 | /* |
f0f1cbaa | 476 | * Do up to NFS_MAXIOVEC mbufs of write each iteration of the |
971b93e3 KM |
477 | * loop until done. |
478 | */ | |
479 | while (len > 0 && uiop->uio_resid == 0) { | |
480 | ivp = iv; | |
481 | siz = 0; | |
482 | uiop->uio_iov = ivp; | |
483 | uiop->uio_iovcnt = 0; | |
484 | uiop->uio_offset = off; | |
f0f1cbaa | 485 | while (len > 0 && uiop->uio_iovcnt < NFS_MAXIOVEC && mp != NULL) { |
971b93e3 KM |
486 | ivp->iov_base = mtod(mp, caddr_t); |
487 | if (len < mp->m_len) | |
488 | ivp->iov_len = xfer = len; | |
489 | else | |
490 | ivp->iov_len = xfer = mp->m_len; | |
491 | #ifdef notdef | |
492 | /* Not Yet .. */ | |
493 | if (M_HASCL(mp) && (((u_long)ivp->iov_base) & CLOFSET) == 0) | |
494 | ivp->iov_op = NULL; /* what should it be ?? */ | |
495 | else | |
496 | ivp->iov_op = NULL; | |
497 | #endif | |
498 | uiop->uio_iovcnt++; | |
499 | ivp++; | |
500 | len -= xfer; | |
501 | siz += xfer; | |
502 | mp = mp->m_next; | |
503 | } | |
504 | if (len > 0 && mp == NULL) { | |
505 | error = EBADRPC; | |
506 | vput(vp); | |
507 | nfsm_reply(0); | |
508 | } | |
509 | uiop->uio_resid = siz; | |
e9843ca3 | 510 | if (error = VOP_WRITE(vp, uiop, IO_SYNC | IO_NODELOCKED, |
971b93e3 KM |
511 | cred)) { |
512 | vput(vp); | |
513 | nfsm_reply(0); | |
514 | } | |
e9843ca3 | 515 | off = uiop->uio_offset; |
971b93e3 | 516 | } |
236c2c19 | 517 | error = VOP_GETATTR(vp, vap, cred, p); |
971b93e3 KM |
518 | vput(vp); |
519 | nfsm_reply(NFSX_FATTR); | |
9238aa59 | 520 | nfsm_build(fp, struct nfsv2_fattr *, NFSX_FATTR); |
e8540f59 | 521 | nfsm_srvfillattr; |
971b93e3 KM |
522 | nfsm_srvdone; |
523 | } | |
524 | ||
525 | /* | |
526 | * nfs create service | |
527 | * now does a truncate to 0 length via. setattr if it already exists | |
528 | */ | |
236c2c19 | 529 | nfsrv_create(mrep, md, dpos, cred, xid, mrq, repstat, p) |
971b93e3 KM |
530 | struct mbuf *mrep, *md, **mrq; |
531 | caddr_t dpos; | |
532 | struct ucred *cred; | |
e8540f59 KM |
533 | u_long xid; |
534 | int *repstat; | |
236c2c19 | 535 | struct proc *p; |
971b93e3 | 536 | { |
9238aa59 | 537 | register struct nfsv2_fattr *fp; |
971b93e3 KM |
538 | struct vattr va; |
539 | register struct vattr *vap = &va; | |
74c40d5a | 540 | struct nameidata nd; |
0bd503ad | 541 | register caddr_t cp; |
236c2c19 | 542 | register u_long *tl; |
0bd503ad KM |
543 | register long t1; |
544 | caddr_t bpos; | |
d4e5799e | 545 | long rdev; |
0bd503ad KM |
546 | int error = 0; |
547 | char *cp2; | |
e8540f59 | 548 | struct mbuf *mb, *mb2, *mreq; |
971b93e3 KM |
549 | struct vnode *vp; |
550 | nfsv2fh_t nfh; | |
551 | fhandle_t *fhp; | |
552 | long len; | |
553 | ||
74c40d5a | 554 | nd.ni_nameiop = 0; |
971b93e3 KM |
555 | fhp = &nfh.fh_generic; |
556 | nfsm_srvmtofh(fhp); | |
557 | nfsm_srvstrsiz(len, NFS_MAXNAMLEN); | |
74c40d5a KM |
558 | nd.ni_cred = cred; |
559 | nd.ni_nameiop = CREATE | LOCKPARENT | LOCKLEAF | SAVESTART; | |
560 | if (error = nfs_namei(&nd, fhp, len, &md, &dpos, p)) | |
971b93e3 | 561 | nfsm_reply(0); |
3ee1461b | 562 | VATTR_NULL(vap); |
236c2c19 | 563 | nfsm_disect(tl, u_long *, NFSX_SATTR); |
971b93e3 KM |
564 | /* |
565 | * Iff doesn't exist, create it | |
566 | * otherwise just truncate to 0 length | |
567 | * should I set the mode too ?? | |
568 | */ | |
74c40d5a | 569 | if (nd.ni_vp == NULL) { |
236c2c19 | 570 | vap->va_type = IFTOVT(fxdr_unsigned(u_long, *tl)); |
4249699a KM |
571 | if (vap->va_type == VNON) |
572 | vap->va_type = VREG; | |
236c2c19 KM |
573 | vap->va_mode = nfstov_mode(*tl); |
574 | rdev = fxdr_unsigned(long, *(tl+3)); | |
1c89915d | 575 | if (vap->va_type == VREG || vap->va_type == VSOCK) { |
5e03b55d | 576 | p->p_spare[1]--; |
74c40d5a KM |
577 | vrele(nd.ni_startdir); |
578 | if (error = VOP_CREATE(&nd, vap, p)) | |
d4e5799e | 579 | nfsm_reply(0); |
74c40d5a | 580 | FREE(nd.ni_pnbuf, M_NAMEI); |
d4e5799e KM |
581 | } else if (vap->va_type == VCHR || vap->va_type == VBLK || |
582 | vap->va_type == VFIFO) { | |
583 | if (vap->va_type == VCHR && rdev == 0xffffffff) | |
584 | vap->va_type = VFIFO; | |
585 | if (vap->va_type == VFIFO) { | |
586 | #ifndef FIFO | |
74c40d5a KM |
587 | VOP_ABORTOP(&nd); |
588 | vput(nd.ni_dvp); | |
d4e5799e | 589 | error = ENXIO; |
74c40d5a | 590 | goto out; |
d4e5799e KM |
591 | #endif /* FIFO */ |
592 | } else if (error = suser(cred, (short *)0)) { | |
74c40d5a KM |
593 | VOP_ABORTOP(&nd); |
594 | vput(nd.ni_dvp); | |
595 | goto out; | |
d4e5799e KM |
596 | } else |
597 | vap->va_rdev = (dev_t)rdev; | |
74c40d5a | 598 | if (error = VOP_MKNOD(&nd, vap, cred, p)) { |
5e03b55d | 599 | p->p_spare[1]--; |
74c40d5a | 600 | vrele(nd.ni_startdir); |
d4e5799e | 601 | nfsm_reply(0); |
74c40d5a KM |
602 | } |
603 | nd.ni_nameiop &= ~(OPMASK | LOCKPARENT | SAVESTART); | |
604 | nd.ni_nameiop |= LOOKUP; | |
5e03b55d | 605 | p->p_spare[1]--; |
74c40d5a KM |
606 | if (error = lookup(&nd, p)) { |
607 | free(nd.ni_pnbuf, M_NAMEI); | |
d4e5799e | 608 | nfsm_reply(0); |
74c40d5a KM |
609 | } |
610 | FREE(nd.ni_pnbuf, M_NAMEI); | |
611 | if (nd.ni_more) { | |
612 | vrele(nd.ni_dvp); | |
613 | vput(nd.ni_vp); | |
614 | VOP_ABORTOP(&nd); | |
615 | error = EINVAL; | |
616 | nfsm_reply(0); | |
617 | } | |
d4e5799e | 618 | } else { |
74c40d5a KM |
619 | VOP_ABORTOP(&nd); |
620 | vput(nd.ni_dvp); | |
d4e5799e | 621 | error = ENXIO; |
74c40d5a | 622 | goto out; |
d4e5799e | 623 | } |
74c40d5a | 624 | vp = nd.ni_vp; |
971b93e3 | 625 | } else { |
5e03b55d | 626 | p->p_spare[1]--; |
74c40d5a KM |
627 | vrele(nd.ni_startdir); |
628 | free(nd.ni_pnbuf, M_NAMEI); | |
629 | vp = nd.ni_vp; | |
630 | if (nd.ni_dvp == vp) | |
631 | vrele(nd.ni_dvp); | |
639383fa | 632 | else |
74c40d5a KM |
633 | vput(nd.ni_dvp); |
634 | VOP_ABORTOP(&nd); | |
971b93e3 | 635 | vap->va_size = 0; |
236c2c19 | 636 | if (error = VOP_SETATTR(vp, vap, cred, p)) { |
383e7b4c | 637 | vput(vp); |
971b93e3 | 638 | nfsm_reply(0); |
383e7b4c | 639 | } |
971b93e3 | 640 | } |
971b93e3 | 641 | bzero((caddr_t)fhp, sizeof(nfh)); |
54fb9dc2 | 642 | fhp->fh_fsid = vp->v_mount->mnt_stat.f_fsid; |
971b93e3 KM |
643 | if (error = VFS_VPTOFH(vp, &fhp->fh_fid)) { |
644 | vput(vp); | |
645 | nfsm_reply(0); | |
646 | } | |
236c2c19 | 647 | error = VOP_GETATTR(vp, vap, cred, p); |
971b93e3 KM |
648 | vput(vp); |
649 | nfsm_reply(NFSX_FH+NFSX_FATTR); | |
650 | nfsm_srvfhtom(fhp); | |
9238aa59 | 651 | nfsm_build(fp, struct nfsv2_fattr *, NFSX_FATTR); |
e8540f59 | 652 | nfsm_srvfillattr; |
971b93e3 KM |
653 | return (error); |
654 | nfsmout: | |
74c40d5a | 655 | if (nd.ni_nameiop) |
5e03b55d | 656 | p->p_spare[1]--, vrele(nd.ni_startdir); |
74c40d5a KM |
657 | VOP_ABORTOP(&nd); |
658 | if (nd.ni_dvp == nd.ni_vp) | |
659 | vrele(nd.ni_dvp); | |
639383fa | 660 | else |
74c40d5a KM |
661 | vput(nd.ni_dvp); |
662 | if (nd.ni_vp) | |
663 | vput(nd.ni_vp); | |
971b93e3 | 664 | return (error); |
74c40d5a KM |
665 | |
666 | out: | |
5e03b55d | 667 | p->p_spare[1]--; |
74c40d5a KM |
668 | vrele(nd.ni_startdir); |
669 | free(nd.ni_pnbuf, M_NAMEI); | |
670 | nfsm_reply(0); | |
971b93e3 KM |
671 | } |
672 | ||
673 | /* | |
674 | * nfs remove service | |
675 | */ | |
236c2c19 | 676 | nfsrv_remove(mrep, md, dpos, cred, xid, mrq, repstat, p) |
971b93e3 KM |
677 | struct mbuf *mrep, *md, **mrq; |
678 | caddr_t dpos; | |
679 | struct ucred *cred; | |
e8540f59 KM |
680 | u_long xid; |
681 | int *repstat; | |
236c2c19 | 682 | struct proc *p; |
971b93e3 | 683 | { |
74c40d5a | 684 | struct nameidata nd; |
236c2c19 | 685 | register u_long *tl; |
0bd503ad KM |
686 | register long t1; |
687 | caddr_t bpos; | |
688 | int error = 0; | |
689 | char *cp2; | |
e8540f59 | 690 | struct mbuf *mb, *mreq; |
971b93e3 KM |
691 | struct vnode *vp; |
692 | nfsv2fh_t nfh; | |
693 | fhandle_t *fhp; | |
694 | long len; | |
695 | ||
696 | fhp = &nfh.fh_generic; | |
697 | nfsm_srvmtofh(fhp); | |
698 | nfsm_srvstrsiz(len, NFS_MAXNAMLEN); | |
74c40d5a KM |
699 | nd.ni_cred = cred; |
700 | nd.ni_nameiop = DELETE | LOCKPARENT | LOCKLEAF; | |
701 | if (error = nfs_namei(&nd, fhp, len, &md, &dpos, p)) | |
971b93e3 | 702 | nfsm_reply(0); |
74c40d5a | 703 | vp = nd.ni_vp; |
971b93e3 KM |
704 | if (vp->v_type == VDIR && |
705 | (error = suser(cred, (short *)0))) | |
706 | goto out; | |
707 | /* | |
4b0bcec3 | 708 | * The root of a mounted filesystem cannot be deleted. |
971b93e3 KM |
709 | */ |
710 | if (vp->v_flag & VROOT) { | |
711 | error = EBUSY; | |
712 | goto out; | |
713 | } | |
714 | if (vp->v_flag & VTEXT) | |
8986c97c | 715 | (void) vnode_pager_uncache(vp); |
971b93e3 | 716 | out: |
66955caf | 717 | if (!error) { |
74c40d5a | 718 | error = VOP_REMOVE(&nd, p); |
66955caf | 719 | } else { |
74c40d5a KM |
720 | VOP_ABORTOP(&nd); |
721 | if (nd.ni_dvp == vp) | |
722 | vrele(nd.ni_dvp); | |
639383fa | 723 | else |
74c40d5a | 724 | vput(nd.ni_dvp); |
66955caf KM |
725 | vput(vp); |
726 | } | |
971b93e3 KM |
727 | nfsm_reply(0); |
728 | nfsm_srvdone; | |
729 | } | |
730 | ||
731 | /* | |
732 | * nfs rename service | |
971b93e3 | 733 | */ |
236c2c19 | 734 | nfsrv_rename(mrep, md, dpos, cred, xid, mrq, repstat, p) |
971b93e3 KM |
735 | struct mbuf *mrep, *md, **mrq; |
736 | caddr_t dpos; | |
737 | struct ucred *cred; | |
e8540f59 KM |
738 | u_long xid; |
739 | int *repstat; | |
236c2c19 | 740 | struct proc *p; |
971b93e3 | 741 | { |
236c2c19 | 742 | register u_long *tl; |
0bd503ad KM |
743 | register long t1; |
744 | caddr_t bpos; | |
745 | int error = 0; | |
746 | char *cp2; | |
e8540f59 | 747 | struct mbuf *mb, *mreq; |
74c40d5a | 748 | struct nameidata fromnd, tond; |
971b93e3 KM |
749 | struct vnode *fvp, *tvp, *tdvp; |
750 | nfsv2fh_t fnfh, tnfh; | |
751 | fhandle_t *ffhp, *tfhp; | |
752 | long len, len2; | |
753 | int rootflg = 0; | |
754 | ||
971b93e3 KM |
755 | ffhp = &fnfh.fh_generic; |
756 | tfhp = &tnfh.fh_generic; | |
74c40d5a KM |
757 | fromnd.ni_nameiop = 0; |
758 | tond.ni_nameiop = 0; | |
971b93e3 KM |
759 | nfsm_srvmtofh(ffhp); |
760 | nfsm_srvstrsiz(len, NFS_MAXNAMLEN); | |
761 | /* | |
762 | * Remember if we are root so that we can reset cr_uid before | |
763 | * the second nfs_namei() call | |
764 | */ | |
765 | if (cred->cr_uid == 0) | |
766 | rootflg++; | |
74c40d5a KM |
767 | fromnd.ni_cred = cred; |
768 | fromnd.ni_nameiop = DELETE | WANTPARENT | SAVESTART; | |
769 | if (error = nfs_namei(&fromnd, ffhp, len, &md, &dpos, p)) | |
971b93e3 | 770 | nfsm_reply(0); |
74c40d5a | 771 | fvp = fromnd.ni_vp; |
971b93e3 | 772 | nfsm_srvmtofh(tfhp); |
f0f1cbaa | 773 | nfsm_strsiz(len2, NFS_MAXNAMLEN); |
971b93e3 KM |
774 | if (rootflg) |
775 | cred->cr_uid = 0; | |
ffe6f482 | 776 | tond.ni_cred = cred; |
10bae9ee | 777 | tond.ni_nameiop = RENAME | LOCKPARENT | LOCKLEAF | NOCACHE |
74c40d5a KM |
778 | | SAVESTART; |
779 | if (error = nfs_namei(&tond, tfhp, len2, &md, &dpos, p)) { | |
780 | VOP_ABORTOP(&fromnd); | |
781 | vrele(fromnd.ni_dvp); | |
66955caf KM |
782 | vrele(fvp); |
783 | goto out1; | |
784 | } | |
36c3043b KM |
785 | tdvp = tond.ni_dvp; |
786 | tvp = tond.ni_vp; | |
971b93e3 KM |
787 | if (tvp != NULL) { |
788 | if (fvp->v_type == VDIR && tvp->v_type != VDIR) { | |
789 | error = EISDIR; | |
790 | goto out; | |
791 | } else if (fvp->v_type != VDIR && tvp->v_type == VDIR) { | |
792 | error = ENOTDIR; | |
793 | goto out; | |
794 | } | |
795 | } | |
971b93e3 KM |
796 | if (fvp->v_mount != tdvp->v_mount) { |
797 | error = EXDEV; | |
798 | goto out; | |
799 | } | |
74c40d5a | 800 | if (fvp == tdvp) |
971b93e3 | 801 | error = EINVAL; |
74c40d5a KM |
802 | /* |
803 | * If source is the same as the destination (that is the | |
804 | * same vnode with the same name in the same directory), | |
805 | * then there is nothing to do. | |
806 | */ | |
807 | if (fvp == tvp && fromnd.ni_dvp == tdvp && | |
808 | fromnd.ni_namelen == tond.ni_namelen && | |
809 | !bcmp(fromnd.ni_ptr, tond.ni_ptr, fromnd.ni_namelen)) | |
810 | error = -1; | |
971b93e3 | 811 | out: |
66955caf | 812 | if (!error) { |
74c40d5a | 813 | error = VOP_RENAME(&fromnd, &tond, p); |
66955caf KM |
814 | } else { |
815 | VOP_ABORTOP(&tond); | |
639383fa KM |
816 | if (tdvp == tvp) |
817 | vrele(tdvp); | |
818 | else | |
819 | vput(tdvp); | |
66955caf KM |
820 | if (tvp) |
821 | vput(tvp); | |
74c40d5a KM |
822 | VOP_ABORTOP(&fromnd); |
823 | vrele(fromnd.ni_dvp); | |
66955caf | 824 | vrele(fvp); |
971b93e3 | 825 | } |
5e03b55d | 826 | p->p_spare[1]--; |
10bae9ee | 827 | vrele(tond.ni_startdir); |
74c40d5a | 828 | FREE(tond.ni_pnbuf, M_NAMEI); |
971b93e3 | 829 | out1: |
5e03b55d | 830 | p->p_spare[1]--; |
74c40d5a KM |
831 | vrele(fromnd.ni_startdir); |
832 | FREE(fromnd.ni_pnbuf, M_NAMEI); | |
971b93e3 KM |
833 | nfsm_reply(0); |
834 | return (error); | |
74c40d5a | 835 | |
971b93e3 | 836 | nfsmout: |
74c40d5a | 837 | if (tond.ni_nameiop) { |
5e03b55d | 838 | p->p_spare[1]--; |
74c40d5a KM |
839 | vrele(tond.ni_startdir); |
840 | FREE(tond.ni_pnbuf, M_NAMEI); | |
841 | } | |
842 | if (fromnd.ni_nameiop) { | |
5e03b55d | 843 | p->p_spare[1]--; |
74c40d5a KM |
844 | vrele(fromnd.ni_startdir); |
845 | FREE(fromnd.ni_pnbuf, M_NAMEI); | |
846 | VOP_ABORTOP(&fromnd); | |
847 | vrele(fromnd.ni_dvp); | |
848 | vrele(fvp); | |
849 | } | |
971b93e3 KM |
850 | return (error); |
851 | } | |
852 | ||
853 | /* | |
854 | * nfs link service | |
855 | */ | |
236c2c19 | 856 | nfsrv_link(mrep, md, dpos, cred, xid, mrq, repstat, p) |
971b93e3 KM |
857 | struct mbuf *mrep, *md, **mrq; |
858 | caddr_t dpos; | |
859 | struct ucred *cred; | |
e8540f59 KM |
860 | u_long xid; |
861 | int *repstat; | |
236c2c19 | 862 | struct proc *p; |
971b93e3 | 863 | { |
74c40d5a | 864 | struct nameidata nd; |
236c2c19 | 865 | register u_long *tl; |
0bd503ad KM |
866 | register long t1; |
867 | caddr_t bpos; | |
868 | int error = 0; | |
869 | char *cp2; | |
e8540f59 | 870 | struct mbuf *mb, *mreq; |
971b93e3 KM |
871 | struct vnode *vp, *xp; |
872 | nfsv2fh_t nfh, dnfh; | |
873 | fhandle_t *fhp, *dfhp; | |
874 | long len; | |
875 | ||
876 | fhp = &nfh.fh_generic; | |
877 | dfhp = &dnfh.fh_generic; | |
878 | nfsm_srvmtofh(fhp); | |
879 | nfsm_srvmtofh(dfhp); | |
880 | nfsm_srvstrsiz(len, NFS_MAXNAMLEN); | |
881 | if (error = nfsrv_fhtovp(fhp, FALSE, &vp, cred)) | |
882 | nfsm_reply(0); | |
883 | if (vp->v_type == VDIR && (error = suser(cred, NULL))) | |
884 | goto out1; | |
74c40d5a KM |
885 | nd.ni_cred = cred; |
886 | nd.ni_nameiop = CREATE | LOCKPARENT; | |
887 | if (error = nfs_namei(&nd, dfhp, len, &md, &dpos, p)) | |
971b93e3 | 888 | goto out1; |
74c40d5a | 889 | xp = nd.ni_vp; |
971b93e3 KM |
890 | if (xp != NULL) { |
891 | error = EEXIST; | |
892 | goto out; | |
893 | } | |
74c40d5a | 894 | xp = nd.ni_dvp; |
971b93e3 KM |
895 | if (vp->v_mount != xp->v_mount) |
896 | error = EXDEV; | |
897 | out: | |
66955caf | 898 | if (!error) { |
74c40d5a | 899 | error = VOP_LINK(vp, &nd, p); |
66955caf | 900 | } else { |
74c40d5a KM |
901 | VOP_ABORTOP(&nd); |
902 | if (nd.ni_dvp == nd.ni_vp) | |
903 | vrele(nd.ni_dvp); | |
639383fa | 904 | else |
74c40d5a KM |
905 | vput(nd.ni_dvp); |
906 | if (nd.ni_vp) | |
907 | vrele(nd.ni_vp); | |
66955caf | 908 | } |
971b93e3 KM |
909 | out1: |
910 | vrele(vp); | |
911 | nfsm_reply(0); | |
912 | nfsm_srvdone; | |
913 | } | |
914 | ||
915 | /* | |
916 | * nfs symbolic link service | |
917 | */ | |
236c2c19 | 918 | nfsrv_symlink(mrep, md, dpos, cred, xid, mrq, repstat, p) |
971b93e3 KM |
919 | struct mbuf *mrep, *md, **mrq; |
920 | caddr_t dpos; | |
921 | struct ucred *cred; | |
e8540f59 KM |
922 | u_long xid; |
923 | int *repstat; | |
236c2c19 | 924 | struct proc *p; |
971b93e3 KM |
925 | { |
926 | struct vattr va; | |
74c40d5a | 927 | struct nameidata nd; |
971b93e3 | 928 | register struct vattr *vap = &va; |
236c2c19 | 929 | register u_long *tl; |
0bd503ad | 930 | register long t1; |
09e56da6 | 931 | struct nfsv2_sattr *sp; |
0bd503ad | 932 | caddr_t bpos; |
f0f1cbaa KM |
933 | struct uio io; |
934 | struct iovec iv; | |
0bd503ad | 935 | int error = 0; |
f0f1cbaa | 936 | char *pathcp, *cp2; |
e8540f59 | 937 | struct mbuf *mb, *mreq; |
971b93e3 KM |
938 | nfsv2fh_t nfh; |
939 | fhandle_t *fhp; | |
d4e5799e | 940 | long len, len2; |
971b93e3 | 941 | |
f0f1cbaa | 942 | pathcp = (char *)0; |
971b93e3 KM |
943 | fhp = &nfh.fh_generic; |
944 | nfsm_srvmtofh(fhp); | |
945 | nfsm_srvstrsiz(len, NFS_MAXNAMLEN); | |
74c40d5a KM |
946 | nd.ni_cred = cred; |
947 | nd.ni_nameiop = CREATE | LOCKPARENT; | |
948 | if (error = nfs_namei(&nd, fhp, len, &md, &dpos, p)) | |
66955caf | 949 | goto out; |
f0f1cbaa KM |
950 | nfsm_strsiz(len2, NFS_MAXPATHLEN); |
951 | MALLOC(pathcp, caddr_t, len2 + 1, M_TEMP, M_WAITOK); | |
952 | iv.iov_base = pathcp; | |
953 | iv.iov_len = len2; | |
954 | io.uio_resid = len2; | |
955 | io.uio_offset = 0; | |
956 | io.uio_iov = &iv; | |
957 | io.uio_iovcnt = 1; | |
958 | io.uio_segflg = UIO_SYSSPACE; | |
959 | io.uio_rw = UIO_READ; | |
236c2c19 | 960 | io.uio_procp = (struct proc *)0; |
f0f1cbaa | 961 | nfsm_mtouio(&io, len2); |
09e56da6 | 962 | nfsm_disect(sp, struct nfsv2_sattr *, NFSX_SATTR); |
f0f1cbaa | 963 | *(pathcp + len2) = '\0'; |
74c40d5a KM |
964 | if (nd.ni_vp) { |
965 | VOP_ABORTOP(&nd); | |
966 | if (nd.ni_dvp == nd.ni_vp) | |
967 | vrele(nd.ni_dvp); | |
639383fa | 968 | else |
74c40d5a KM |
969 | vput(nd.ni_dvp); |
970 | vrele(nd.ni_vp); | |
971b93e3 KM |
971 | error = EEXIST; |
972 | goto out; | |
973 | } | |
3ee1461b | 974 | VATTR_NULL(vap); |
09e56da6 | 975 | vap->va_mode = fxdr_unsigned(u_short, sp->sa_mode); |
74c40d5a | 976 | error = VOP_SYMLINK(&nd, vap, pathcp, p); |
971b93e3 | 977 | out: |
f0f1cbaa KM |
978 | if (pathcp) |
979 | FREE(pathcp, M_TEMP); | |
971b93e3 KM |
980 | nfsm_reply(0); |
981 | return (error); | |
982 | nfsmout: | |
74c40d5a KM |
983 | VOP_ABORTOP(&nd); |
984 | if (nd.ni_dvp == nd.ni_vp) | |
985 | vrele(nd.ni_dvp); | |
639383fa | 986 | else |
74c40d5a KM |
987 | vput(nd.ni_dvp); |
988 | if (nd.ni_vp) | |
989 | vrele(nd.ni_vp); | |
f0f1cbaa KM |
990 | if (pathcp) |
991 | FREE(pathcp, M_TEMP); | |
971b93e3 KM |
992 | return (error); |
993 | } | |
994 | ||
995 | /* | |
996 | * nfs mkdir service | |
997 | */ | |
236c2c19 | 998 | nfsrv_mkdir(mrep, md, dpos, cred, xid, mrq, repstat, p) |
971b93e3 KM |
999 | struct mbuf *mrep, *md, **mrq; |
1000 | caddr_t dpos; | |
1001 | struct ucred *cred; | |
e8540f59 KM |
1002 | u_long xid; |
1003 | int *repstat; | |
236c2c19 | 1004 | struct proc *p; |
971b93e3 KM |
1005 | { |
1006 | struct vattr va; | |
1007 | register struct vattr *vap = &va; | |
9238aa59 | 1008 | register struct nfsv2_fattr *fp; |
74c40d5a | 1009 | struct nameidata nd; |
0bd503ad | 1010 | register caddr_t cp; |
236c2c19 | 1011 | register u_long *tl; |
0bd503ad KM |
1012 | register long t1; |
1013 | caddr_t bpos; | |
1014 | int error = 0; | |
1015 | char *cp2; | |
e8540f59 | 1016 | struct mbuf *mb, *mb2, *mreq; |
971b93e3 KM |
1017 | struct vnode *vp; |
1018 | nfsv2fh_t nfh; | |
1019 | fhandle_t *fhp; | |
1020 | long len; | |
1021 | ||
971b93e3 KM |
1022 | fhp = &nfh.fh_generic; |
1023 | nfsm_srvmtofh(fhp); | |
1024 | nfsm_srvstrsiz(len, NFS_MAXNAMLEN); | |
74c40d5a KM |
1025 | nd.ni_cred = cred; |
1026 | nd.ni_nameiop = CREATE | LOCKPARENT; | |
1027 | if (error = nfs_namei(&nd, fhp, len, &md, &dpos, p)) | |
971b93e3 | 1028 | nfsm_reply(0); |
236c2c19 | 1029 | nfsm_disect(tl, u_long *, NFSX_UNSIGNED); |
3ee1461b | 1030 | VATTR_NULL(vap); |
971b93e3 | 1031 | vap->va_type = VDIR; |
236c2c19 | 1032 | vap->va_mode = nfstov_mode(*tl++); |
74c40d5a | 1033 | vp = nd.ni_vp; |
971b93e3 | 1034 | if (vp != NULL) { |
74c40d5a KM |
1035 | VOP_ABORTOP(&nd); |
1036 | if (nd.ni_dvp == vp) | |
1037 | vrele(nd.ni_dvp); | |
639383fa | 1038 | else |
74c40d5a | 1039 | vput(nd.ni_dvp); |
66955caf | 1040 | vrele(vp); |
971b93e3 KM |
1041 | error = EEXIST; |
1042 | nfsm_reply(0); | |
1043 | } | |
74c40d5a | 1044 | if (error = VOP_MKDIR(&nd, vap, p)) |
971b93e3 | 1045 | nfsm_reply(0); |
74c40d5a | 1046 | vp = nd.ni_vp; |
971b93e3 | 1047 | bzero((caddr_t)fhp, sizeof(nfh)); |
54fb9dc2 | 1048 | fhp->fh_fsid = vp->v_mount->mnt_stat.f_fsid; |
971b93e3 KM |
1049 | if (error = VFS_VPTOFH(vp, &fhp->fh_fid)) { |
1050 | vput(vp); | |
1051 | nfsm_reply(0); | |
1052 | } | |
236c2c19 | 1053 | error = VOP_GETATTR(vp, vap, cred, p); |
971b93e3 KM |
1054 | vput(vp); |
1055 | nfsm_reply(NFSX_FH+NFSX_FATTR); | |
1056 | nfsm_srvfhtom(fhp); | |
9238aa59 | 1057 | nfsm_build(fp, struct nfsv2_fattr *, NFSX_FATTR); |
e8540f59 | 1058 | nfsm_srvfillattr; |
971b93e3 KM |
1059 | return (error); |
1060 | nfsmout: | |
74c40d5a KM |
1061 | VOP_ABORTOP(&nd); |
1062 | if (nd.ni_dvp == nd.ni_vp) | |
1063 | vrele(nd.ni_dvp); | |
639383fa | 1064 | else |
74c40d5a KM |
1065 | vput(nd.ni_dvp); |
1066 | if (nd.ni_vp) | |
1067 | vrele(nd.ni_vp); | |
971b93e3 KM |
1068 | return (error); |
1069 | } | |
1070 | ||
1071 | /* | |
1072 | * nfs rmdir service | |
1073 | */ | |
236c2c19 | 1074 | nfsrv_rmdir(mrep, md, dpos, cred, xid, mrq, repstat, p) |
971b93e3 KM |
1075 | struct mbuf *mrep, *md, **mrq; |
1076 | caddr_t dpos; | |
1077 | struct ucred *cred; | |
e8540f59 KM |
1078 | u_long xid; |
1079 | int *repstat; | |
236c2c19 | 1080 | struct proc *p; |
971b93e3 | 1081 | { |
236c2c19 | 1082 | register u_long *tl; |
0bd503ad KM |
1083 | register long t1; |
1084 | caddr_t bpos; | |
1085 | int error = 0; | |
1086 | char *cp2; | |
e8540f59 | 1087 | struct mbuf *mb, *mreq; |
971b93e3 KM |
1088 | struct vnode *vp; |
1089 | nfsv2fh_t nfh; | |
1090 | fhandle_t *fhp; | |
1091 | long len; | |
74c40d5a | 1092 | struct nameidata nd; |
971b93e3 KM |
1093 | |
1094 | fhp = &nfh.fh_generic; | |
1095 | nfsm_srvmtofh(fhp); | |
1096 | nfsm_srvstrsiz(len, NFS_MAXNAMLEN); | |
74c40d5a KM |
1097 | nd.ni_cred = cred; |
1098 | nd.ni_nameiop = DELETE | LOCKPARENT | LOCKLEAF; | |
1099 | if (error = nfs_namei(&nd, fhp, len, &md, &dpos, p)) | |
971b93e3 | 1100 | nfsm_reply(0); |
74c40d5a | 1101 | vp = nd.ni_vp; |
971b93e3 KM |
1102 | if (vp->v_type != VDIR) { |
1103 | error = ENOTDIR; | |
1104 | goto out; | |
1105 | } | |
1106 | /* | |
1107 | * No rmdir "." please. | |
1108 | */ | |
74c40d5a | 1109 | if (nd.ni_dvp == vp) { |
971b93e3 KM |
1110 | error = EINVAL; |
1111 | goto out; | |
1112 | } | |
1113 | /* | |
4b0bcec3 | 1114 | * The root of a mounted filesystem cannot be deleted. |
971b93e3 KM |
1115 | */ |
1116 | if (vp->v_flag & VROOT) | |
1117 | error = EBUSY; | |
1118 | out: | |
66955caf | 1119 | if (!error) { |
74c40d5a | 1120 | error = VOP_RMDIR(&nd, p); |
66955caf | 1121 | } else { |
74c40d5a KM |
1122 | VOP_ABORTOP(&nd); |
1123 | if (nd.ni_dvp == nd.ni_vp) | |
1124 | vrele(nd.ni_dvp); | |
639383fa | 1125 | else |
74c40d5a | 1126 | vput(nd.ni_dvp); |
66955caf KM |
1127 | vput(vp); |
1128 | } | |
971b93e3 KM |
1129 | nfsm_reply(0); |
1130 | nfsm_srvdone; | |
1131 | } | |
1132 | ||
1133 | /* | |
1134 | * nfs readdir service | |
1135 | * - mallocs what it thinks is enough to read | |
236c2c19 | 1136 | * count rounded up to a multiple of NFS_DIRBLKSIZ <= NFS_MAXREADDIR |
971b93e3 | 1137 | * - calls VOP_READDIR() |
732aefe9 | 1138 | * - loops around building the reply |
36c3043b KM |
1139 | * if the output generated exceeds count break out of loop |
1140 | * The nfsm_clget macro is used here so that the reply will be packed | |
1141 | * tightly in mbuf clusters. | |
971b93e3 | 1142 | * - it only knows that it has encountered eof when the VOP_READDIR() |
36c3043b | 1143 | * reads nothing |
971b93e3 | 1144 | * - as such one readdir rpc will return eof false although you are there |
36c3043b | 1145 | * and then the next will return eof |
971b93e3 | 1146 | * - it trims out records with d_ino == 0 |
36c3043b KM |
1147 | * this doesn't matter for Unix clients, but they might confuse clients |
1148 | * for other os'. | |
971b93e3 | 1149 | * NB: It is tempting to set eof to true if the VOP_READDIR() reads less |
36c3043b KM |
1150 | * than requested, but this may not apply to all filesystems. For |
1151 | * example, client NFS does not { although it is never remote mounted | |
1152 | * anyhow } | |
971b93e3 | 1153 | * PS: The NFS protocol spec. does not clarify what the "count" byte |
36c3043b KM |
1154 | * argument is a count of.. just name strings and file id's or the |
1155 | * entire reply rpc or ... | |
1156 | * I tried just file name and id sizes and it confused the Sun client, | |
1157 | * so I am using the full rpc size now. The "paranoia.." comment refers | |
1158 | * to including the status longwords that are not a part of the dir. | |
1159 | * "entry" structures, but are in the rpc. | |
971b93e3 | 1160 | */ |
236c2c19 | 1161 | nfsrv_readdir(mrep, md, dpos, cred, xid, mrq, repstat, p) |
971b93e3 KM |
1162 | struct mbuf **mrq; |
1163 | struct mbuf *mrep, *md; | |
1164 | caddr_t dpos; | |
1165 | struct ucred *cred; | |
1166 | u_long xid; | |
e8540f59 | 1167 | int *repstat; |
236c2c19 | 1168 | struct proc *p; |
971b93e3 KM |
1169 | { |
1170 | register char *bp, *be; | |
1171 | register struct mbuf *mp; | |
1172 | register struct direct *dp; | |
0bd503ad | 1173 | register caddr_t cp; |
236c2c19 | 1174 | register u_long *tl; |
0bd503ad KM |
1175 | register long t1; |
1176 | caddr_t bpos; | |
1177 | int error = 0; | |
1178 | char *cp2; | |
e8540f59 | 1179 | struct mbuf *mb, *mb2, *mreq; |
971b93e3 KM |
1180 | char *cpos, *cend; |
1181 | int len, nlen, rem, xfer, tsiz, i; | |
1182 | struct vnode *vp; | |
1183 | struct mbuf *mp2, *mp3; | |
1184 | nfsv2fh_t nfh; | |
1185 | fhandle_t *fhp; | |
1186 | struct uio io; | |
1187 | struct iovec iv; | |
e49b1a6c | 1188 | int siz, cnt, fullsiz, eofflag; |
971b93e3 KM |
1189 | u_long on; |
1190 | char *rbuf; | |
1191 | off_t off, toff; | |
1192 | ||
1193 | fhp = &nfh.fh_generic; | |
1194 | nfsm_srvmtofh(fhp); | |
236c2c19 KM |
1195 | nfsm_disect(tl, u_long *, 2*NFSX_UNSIGNED); |
1196 | toff = fxdr_unsigned(off_t, *tl++); | |
1197 | off = (toff & ~(NFS_DIRBLKSIZ-1)); | |
1198 | on = (toff & (NFS_DIRBLKSIZ-1)); | |
1199 | cnt = fxdr_unsigned(int, *tl); | |
1200 | siz = ((cnt+NFS_DIRBLKSIZ-1) & ~(NFS_DIRBLKSIZ-1)); | |
f0f1cbaa KM |
1201 | if (cnt > NFS_MAXREADDIR) |
1202 | siz = NFS_MAXREADDIR; | |
971b93e3 KM |
1203 | fullsiz = siz; |
1204 | if (error = nfsrv_fhtovp(fhp, TRUE, &vp, cred)) | |
1205 | nfsm_reply(0); | |
236c2c19 | 1206 | if (error = nfsrv_access(vp, VEXEC, cred, p)) { |
971b93e3 KM |
1207 | vput(vp); |
1208 | nfsm_reply(0); | |
1209 | } | |
1210 | VOP_UNLOCK(vp); | |
1211 | MALLOC(rbuf, caddr_t, siz, M_TEMP, M_WAITOK); | |
1212 | again: | |
1213 | iv.iov_base = rbuf; | |
1214 | iv.iov_len = fullsiz; | |
1215 | io.uio_iov = &iv; | |
1216 | io.uio_iovcnt = 1; | |
1217 | io.uio_offset = off; | |
1218 | io.uio_resid = fullsiz; | |
1219 | io.uio_segflg = UIO_SYSSPACE; | |
1220 | io.uio_rw = UIO_READ; | |
236c2c19 | 1221 | io.uio_procp = (struct proc *)0; |
e49b1a6c | 1222 | error = VOP_READDIR(vp, &io, cred, &eofflag); |
e9843ca3 | 1223 | off = io.uio_offset; |
971b93e3 KM |
1224 | if (error) { |
1225 | vrele(vp); | |
1226 | free((caddr_t)rbuf, M_TEMP); | |
1227 | nfsm_reply(0); | |
1228 | } | |
1229 | if (io.uio_resid) { | |
1230 | siz -= io.uio_resid; | |
1231 | ||
1232 | /* | |
1233 | * If nothing read, return eof | |
1234 | * rpc reply | |
1235 | */ | |
1236 | if (siz == 0) { | |
1237 | vrele(vp); | |
1238 | nfsm_reply(2*NFSX_UNSIGNED); | |
236c2c19 KM |
1239 | nfsm_build(tl, u_long *, 2*NFSX_UNSIGNED); |
1240 | *tl++ = nfs_false; | |
1241 | *tl = nfs_true; | |
971b93e3 KM |
1242 | FREE((caddr_t)rbuf, M_TEMP); |
1243 | return (0); | |
1244 | } | |
1245 | } | |
732aefe9 | 1246 | |
971b93e3 KM |
1247 | /* |
1248 | * Check for degenerate cases of nothing useful read. | |
732aefe9 | 1249 | * If so go try again |
971b93e3 | 1250 | */ |
732aefe9 KM |
1251 | cpos = rbuf + on; |
1252 | cend = rbuf + siz; | |
1253 | dp = (struct direct *)cpos; | |
1254 | while (cpos < cend && dp->d_ino == 0) { | |
1255 | cpos += dp->d_reclen; | |
1256 | dp = (struct direct *)cpos; | |
1257 | } | |
1258 | if (cpos >= cend) { | |
971b93e3 KM |
1259 | toff = off; |
1260 | siz = fullsiz; | |
1261 | on = 0; | |
1262 | goto again; | |
1263 | } | |
732aefe9 KM |
1264 | |
1265 | cpos = rbuf + on; | |
1266 | cend = rbuf + siz; | |
1267 | dp = (struct direct *)cpos; | |
971b93e3 | 1268 | vrele(vp); |
36c3043b | 1269 | len = 3*NFSX_UNSIGNED; /* paranoia, probably can be 0 */ |
971b93e3 KM |
1270 | bp = be = (caddr_t)0; |
1271 | mp3 = (struct mbuf *)0; | |
1272 | nfsm_reply(siz); | |
1273 | ||
1274 | /* Loop through the records and build reply */ | |
1275 | while (cpos < cend) { | |
1276 | if (dp->d_ino != 0) { | |
1277 | nlen = dp->d_namlen; | |
1278 | rem = nfsm_rndup(nlen)-nlen; | |
36c3043b | 1279 | |
971b93e3 KM |
1280 | /* |
1281 | * As noted above, the NFS spec. is not clear about what | |
1282 | * should be included in "count" as totalled up here in | |
1283 | * "len". | |
1284 | */ | |
1285 | len += (4*NFSX_UNSIGNED+nlen+rem); | |
f0f1cbaa KM |
1286 | if (len > cnt) { |
1287 | eofflag = 0; | |
971b93e3 | 1288 | break; |
f0f1cbaa | 1289 | } |
36c3043b | 1290 | |
971b93e3 KM |
1291 | /* Build the directory record xdr from the direct entry */ |
1292 | nfsm_clget; | |
236c2c19 | 1293 | *tl = nfs_true; |
971b93e3 KM |
1294 | bp += NFSX_UNSIGNED; |
1295 | nfsm_clget; | |
236c2c19 | 1296 | *tl = txdr_unsigned(dp->d_ino); |
971b93e3 KM |
1297 | bp += NFSX_UNSIGNED; |
1298 | nfsm_clget; | |
236c2c19 | 1299 | *tl = txdr_unsigned(nlen); |
971b93e3 | 1300 | bp += NFSX_UNSIGNED; |
36c3043b | 1301 | |
971b93e3 KM |
1302 | /* And loop arround copying the name */ |
1303 | xfer = nlen; | |
1304 | cp = dp->d_name; | |
1305 | while (xfer > 0) { | |
1306 | nfsm_clget; | |
1307 | if ((bp+xfer) > be) | |
1308 | tsiz = be-bp; | |
1309 | else | |
1310 | tsiz = xfer; | |
1311 | bcopy(cp, bp, tsiz); | |
1312 | bp += tsiz; | |
1313 | xfer -= tsiz; | |
1314 | if (xfer > 0) | |
1315 | cp += tsiz; | |
1316 | } | |
1317 | /* And null pad to a long boundary */ | |
1318 | for (i = 0; i < rem; i++) | |
1319 | *bp++ = '\0'; | |
1320 | nfsm_clget; | |
36c3043b | 1321 | |
971b93e3 KM |
1322 | /* Finish off the record */ |
1323 | toff += dp->d_reclen; | |
236c2c19 | 1324 | *tl = txdr_unsigned(toff); |
971b93e3 KM |
1325 | bp += NFSX_UNSIGNED; |
1326 | } else | |
1327 | toff += dp->d_reclen; | |
1328 | cpos += dp->d_reclen; | |
1329 | dp = (struct direct *)cpos; | |
1330 | } | |
1331 | nfsm_clget; | |
236c2c19 | 1332 | *tl = nfs_false; |
971b93e3 KM |
1333 | bp += NFSX_UNSIGNED; |
1334 | nfsm_clget; | |
e49b1a6c | 1335 | if (eofflag) |
236c2c19 | 1336 | *tl = nfs_true; |
e49b1a6c | 1337 | else |
236c2c19 | 1338 | *tl = nfs_false; |
971b93e3 KM |
1339 | bp += NFSX_UNSIGNED; |
1340 | if (bp < be) | |
1341 | mp->m_len = bp-mtod(mp, caddr_t); | |
1342 | mb->m_next = mp3; | |
1343 | FREE(rbuf, M_TEMP); | |
1344 | nfsm_srvdone; | |
1345 | } | |
1346 | ||
1347 | /* | |
1348 | * nfs statfs service | |
1349 | */ | |
236c2c19 | 1350 | nfsrv_statfs(mrep, md, dpos, cred, xid, mrq, repstat, p) |
971b93e3 KM |
1351 | struct mbuf **mrq; |
1352 | struct mbuf *mrep, *md; | |
1353 | caddr_t dpos; | |
1354 | struct ucred *cred; | |
1355 | u_long xid; | |
e8540f59 | 1356 | int *repstat; |
236c2c19 | 1357 | struct proc *p; |
971b93e3 KM |
1358 | { |
1359 | register struct statfs *sf; | |
9238aa59 | 1360 | register struct nfsv2_statfs *sfp; |
236c2c19 | 1361 | register u_long *tl; |
0bd503ad KM |
1362 | register long t1; |
1363 | caddr_t bpos; | |
1364 | int error = 0; | |
1365 | char *cp2; | |
e8540f59 | 1366 | struct mbuf *mb, *mb2, *mreq; |
971b93e3 KM |
1367 | struct vnode *vp; |
1368 | nfsv2fh_t nfh; | |
1369 | fhandle_t *fhp; | |
1370 | struct statfs statfs; | |
1371 | ||
1372 | fhp = &nfh.fh_generic; | |
1373 | nfsm_srvmtofh(fhp); | |
1374 | if (error = nfsrv_fhtovp(fhp, TRUE, &vp, cred)) | |
1375 | nfsm_reply(0); | |
1376 | sf = &statfs; | |
236c2c19 | 1377 | error = VFS_STATFS(vp->v_mount, sf, p); |
971b93e3 KM |
1378 | vput(vp); |
1379 | nfsm_reply(NFSX_STATFS); | |
9238aa59 | 1380 | nfsm_build(sfp, struct nfsv2_statfs *, NFSX_STATFS); |
b28c3bcc | 1381 | sfp->sf_tsize = txdr_unsigned(NFS_MAXDGRAMDATA); |
9238aa59 RM |
1382 | sfp->sf_bsize = txdr_unsigned(sf->f_fsize); |
1383 | sfp->sf_blocks = txdr_unsigned(sf->f_blocks); | |
1384 | sfp->sf_bfree = txdr_unsigned(sf->f_bfree); | |
1385 | sfp->sf_bavail = txdr_unsigned(sf->f_bavail); | |
971b93e3 KM |
1386 | nfsm_srvdone; |
1387 | } | |
1388 | ||
1389 | /* | |
1390 | * Null operation, used by clients to ping server | |
1391 | */ | |
0bd503ad | 1392 | /* ARGSUSED */ |
236c2c19 | 1393 | nfsrv_null(mrep, md, dpos, cred, xid, mrq, repstat, p) |
971b93e3 KM |
1394 | struct mbuf **mrq; |
1395 | struct mbuf *mrep, *md; | |
1396 | caddr_t dpos; | |
1397 | struct ucred *cred; | |
1398 | u_long xid; | |
e8540f59 | 1399 | int *repstat; |
236c2c19 | 1400 | struct proc *p; |
971b93e3 | 1401 | { |
0bd503ad KM |
1402 | caddr_t bpos; |
1403 | int error = 0; | |
e8540f59 | 1404 | struct mbuf *mb, *mreq; |
971b93e3 KM |
1405 | |
1406 | error = VNOVAL; | |
1407 | nfsm_reply(0); | |
0bd503ad | 1408 | return (error); |
971b93e3 KM |
1409 | } |
1410 | ||
1411 | /* | |
1412 | * No operation, used for obsolete procedures | |
1413 | */ | |
0bd503ad | 1414 | /* ARGSUSED */ |
236c2c19 | 1415 | nfsrv_noop(mrep, md, dpos, cred, xid, mrq, repstat, p) |
971b93e3 KM |
1416 | struct mbuf **mrq; |
1417 | struct mbuf *mrep, *md; | |
1418 | caddr_t dpos; | |
1419 | struct ucred *cred; | |
1420 | u_long xid; | |
e8540f59 | 1421 | int *repstat; |
236c2c19 | 1422 | struct proc *p; |
971b93e3 | 1423 | { |
0bd503ad KM |
1424 | caddr_t bpos; |
1425 | int error = 0; | |
e8540f59 | 1426 | struct mbuf *mb, *mreq; |
971b93e3 KM |
1427 | |
1428 | error = EPROCUNAVAIL; | |
1429 | nfsm_reply(0); | |
0bd503ad | 1430 | return (error); |
971b93e3 | 1431 | } |
36c3043b | 1432 | |
24ed1a73 KM |
1433 | /* |
1434 | * Perform access checking for vnodes obtained from file handles that would | |
1435 | * refer to files already opened by a Unix client. You cannot just use | |
1436 | * vn_writechk() and VOP_ACCESS() for two reasons. | |
54fb9dc2 | 1437 | * 1 - You must check for MNT_EXRDONLY as well as MNT_RDONLY for the write case |
24ed1a73 KM |
1438 | * 2 - The owner is to be given access irrespective of mode bits so that |
1439 | * processes that chmod after opening a file don't break. I don't like | |
1440 | * this because it opens a security hole, but since the nfs server opens | |
1441 | * a security hole the size of a barn door anyhow, what the heck. | |
1442 | */ | |
236c2c19 | 1443 | nfsrv_access(vp, flags, cred, p) |
24ed1a73 KM |
1444 | register struct vnode *vp; |
1445 | int flags; | |
1446 | register struct ucred *cred; | |
236c2c19 | 1447 | struct proc *p; |
24ed1a73 KM |
1448 | { |
1449 | struct vattr vattr; | |
1450 | int error; | |
1451 | if (flags & VWRITE) { | |
54fb9dc2 | 1452 | /* Just vn_writechk() changed to check MNT_EXRDONLY */ |
24ed1a73 KM |
1453 | /* |
1454 | * Disallow write attempts on read-only file systems; | |
1455 | * unless the file is a socket or a block or character | |
1456 | * device resident on the file system. | |
1457 | */ | |
fef23149 KM |
1458 | if (vp->v_mount->mnt_flag & (MNT_RDONLY | MNT_EXRDONLY)) { |
1459 | switch (vp->v_type) { | |
1460 | case VREG: case VDIR: case VLNK: | |
24ed1a73 | 1461 | return (EROFS); |
fef23149 KM |
1462 | } |
1463 | } | |
24ed1a73 KM |
1464 | /* |
1465 | * If there's shared text associated with | |
1466 | * the inode, try to free it up once. If | |
1467 | * we fail, we can't allow writing. | |
1468 | */ | |
8986c97c | 1469 | if ((vp->v_flag & VTEXT) && !vnode_pager_uncache(vp)) |
24ed1a73 | 1470 | return (ETXTBSY); |
24ed1a73 | 1471 | } |
236c2c19 | 1472 | if (error = VOP_GETATTR(vp, &vattr, cred, p)) |
fef23149 | 1473 | return (error); |
236c2c19 | 1474 | if ((error = VOP_ACCESS(vp, flags, cred, p)) && |
fef23149 KM |
1475 | cred->cr_uid != vattr.va_uid) |
1476 | return (error); | |
1477 | return (0); | |
24ed1a73 | 1478 | } |