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 | * |
ea67b335 | 10 | * @(#)nfs_serv.c 7.51 (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 | ||
400a1380 KM |
31 | #include <sys/param.h> |
32 | #include <sys/proc.h> | |
33 | #include <sys/file.h> | |
34 | #include <sys/namei.h> | |
35 | #include <sys/vnode.h> | |
36 | #include <sys/mount.h> | |
37 | #include <sys/mbuf.h> | |
38 | #include <sys/dirent.h> | |
058dee65 | 39 | |
400a1380 | 40 | #include <vm/vm.h> |
058dee65 | 41 | |
400a1380 KM |
42 | #include <ufs/ufs/quota.h> /* XXX - for ufid */ |
43 | #include <ufs/ufs/inode.h> /* XXX - for ufid */ | |
44 | ||
45 | #include <nfs/nfsv2.h> | |
46 | #include <nfs/rpcv2.h> | |
47 | #include <nfs/nfs.h> | |
48 | #include <nfs/xdr_subs.h> | |
49 | #include <nfs/nfsm_subs.h> | |
50 | #include <nfs/nqnfs.h> | |
971b93e3 KM |
51 | |
52 | /* Defs */ | |
36c3043b KM |
53 | #define TRUE 1 |
54 | #define FALSE 0 | |
971b93e3 KM |
55 | |
56 | /* Global vars */ | |
57 | extern u_long nfs_procids[NFS_NPROCS]; | |
58 | extern u_long nfs_xdrneg1; | |
59 | extern u_long nfs_false, nfs_true; | |
2c5b44a2 | 60 | nfstype nfs_type[9] = { NFNON, NFREG, NFDIR, NFBLK, NFCHR, NFLNK, NFNON, |
d4e5799e | 61 | NFCHR, NFNON }; |
971b93e3 KM |
62 | |
63 | /* | |
64 | * nfs getattr service | |
65 | */ | |
2c5b44a2 KM |
66 | nfsrv_getattr(nfsd, mrep, md, dpos, cred, nam, mrq) |
67 | struct nfsd *nfsd; | |
971b93e3 KM |
68 | struct mbuf *mrep, *md; |
69 | caddr_t dpos; | |
70 | struct ucred *cred; | |
2c5b44a2 | 71 | struct mbuf *nam, **mrq; |
971b93e3 | 72 | { |
9342689a | 73 | USES_VOP_GETATTR; |
9238aa59 | 74 | register struct nfsv2_fattr *fp; |
971b93e3 KM |
75 | struct vattr va; |
76 | register struct vattr *vap = &va; | |
77 | struct vnode *vp; | |
78 | nfsv2fh_t nfh; | |
79 | fhandle_t *fhp; | |
236c2c19 | 80 | register u_long *tl; |
0bd503ad KM |
81 | register long t1; |
82 | caddr_t bpos; | |
2c5b44a2 | 83 | int error = 0, rdonly, cache; |
0bd503ad | 84 | char *cp2; |
e8540f59 | 85 | struct mbuf *mb, *mb2, *mreq; |
2c5b44a2 | 86 | u_quad_t frev; |
971b93e3 KM |
87 | |
88 | fhp = &nfh.fh_generic; | |
89 | nfsm_srvmtofh(fhp); | |
2c5b44a2 | 90 | if (error = nfsrv_fhtovp(fhp, TRUE, &vp, cred, nfsd->nd_slp, nam, &rdonly)) |
971b93e3 | 91 | nfsm_reply(0); |
2c5b44a2 KM |
92 | nqsrv_getl(vp, NQL_READ); |
93 | error = VOP_GETATTR(vp, vap, cred, nfsd->nd_procp); | |
971b93e3 KM |
94 | vput(vp); |
95 | nfsm_reply(NFSX_FATTR); | |
9238aa59 | 96 | nfsm_build(fp, struct nfsv2_fattr *, NFSX_FATTR); |
e8540f59 | 97 | nfsm_srvfillattr; |
971b93e3 KM |
98 | nfsm_srvdone; |
99 | } | |
100 | ||
101 | /* | |
102 | * nfs setattr service | |
103 | */ | |
2c5b44a2 KM |
104 | nfsrv_setattr(nfsd, mrep, md, dpos, cred, nam, mrq) |
105 | struct nfsd *nfsd; | |
971b93e3 KM |
106 | struct mbuf *mrep, *md; |
107 | caddr_t dpos; | |
108 | struct ucred *cred; | |
2c5b44a2 | 109 | struct mbuf *nam, **mrq; |
971b93e3 | 110 | { |
9342689a JH |
111 | USES_VOP_GETATTR; |
112 | USES_VOP_SETATTR; | |
971b93e3 KM |
113 | struct vattr va; |
114 | register struct vattr *vap = &va; | |
9238aa59 RM |
115 | register struct nfsv2_sattr *sp; |
116 | register struct nfsv2_fattr *fp; | |
971b93e3 KM |
117 | struct vnode *vp; |
118 | nfsv2fh_t nfh; | |
119 | fhandle_t *fhp; | |
236c2c19 | 120 | register u_long *tl; |
0bd503ad KM |
121 | register long t1; |
122 | caddr_t bpos; | |
2c5b44a2 | 123 | int error = 0, rdonly, cache, duration2, cache2; |
0bd503ad | 124 | char *cp2; |
e8540f59 | 125 | struct mbuf *mb, *mb2, *mreq; |
2c5b44a2 | 126 | u_quad_t frev, frev2; |
971b93e3 KM |
127 | |
128 | fhp = &nfh.fh_generic; | |
129 | nfsm_srvmtofh(fhp); | |
2c5b44a2 KM |
130 | nfsm_dissect(sp, struct nfsv2_sattr *, NFSX_SATTR); |
131 | if (error = nfsrv_fhtovp(fhp, TRUE, &vp, cred, nfsd->nd_slp, nam, &rdonly)) | |
971b93e3 | 132 | nfsm_reply(0); |
2c5b44a2 KM |
133 | nqsrv_getl(vp, NQL_WRITE); |
134 | if (error = nfsrv_access(vp, VWRITE, cred, rdonly, nfsd->nd_procp)) | |
971b93e3 | 135 | goto out; |
3ee1461b | 136 | VATTR_NULL(vap); |
971b93e3 KM |
137 | /* |
138 | * Nah nah nah nah na nah | |
139 | * There is a bug in the Sun client that puts 0xffff in the mode | |
140 | * field of sattr when it should put in 0xffffffff. The u_short | |
141 | * doesn't sign extend. | |
142 | * --> check the low order 2 bytes for 0xffff | |
143 | */ | |
9238aa59 RM |
144 | if ((fxdr_unsigned(int, sp->sa_mode) & 0xffff) != 0xffff) |
145 | vap->va_mode = nfstov_mode(sp->sa_mode); | |
146 | if (sp->sa_uid != nfs_xdrneg1) | |
147 | vap->va_uid = fxdr_unsigned(uid_t, sp->sa_uid); | |
148 | if (sp->sa_gid != nfs_xdrneg1) | |
149 | vap->va_gid = fxdr_unsigned(gid_t, sp->sa_gid); | |
e8540f59 | 150 | if (sp->sa_size != nfs_xdrneg1) |
9238aa59 | 151 | vap->va_size = fxdr_unsigned(u_long, sp->sa_size); |
e8540f59 KM |
152 | /* |
153 | * The usec field of sa_atime is overloaded with the va_flags field | |
154 | * for 4.4BSD clients. Hopefully other clients always set both the | |
155 | * sec and usec fields to -1 when not setting the atime. | |
156 | */ | |
157 | if (sp->sa_atime.tv_sec != nfs_xdrneg1) { | |
158 | vap->va_atime.tv_sec = fxdr_unsigned(long, sp->sa_atime.tv_sec); | |
159 | vap->va_atime.tv_usec = 0; | |
36c3043b | 160 | } |
e8540f59 KM |
161 | if (sp->sa_atime.tv_usec != nfs_xdrneg1) |
162 | vap->va_flags = fxdr_unsigned(u_long, sp->sa_atime.tv_usec); | |
9238aa59 RM |
163 | if (sp->sa_mtime.tv_sec != nfs_xdrneg1) |
164 | fxdr_time(&sp->sa_mtime, &vap->va_mtime); | |
2c5b44a2 | 165 | if (error = VOP_SETATTR(vp, vap, cred, nfsd->nd_procp)) { |
971b93e3 KM |
166 | vput(vp); |
167 | nfsm_reply(0); | |
168 | } | |
2c5b44a2 | 169 | error = VOP_GETATTR(vp, vap, cred, nfsd->nd_procp); |
971b93e3 KM |
170 | out: |
171 | vput(vp); | |
2c5b44a2 | 172 | nfsm_reply(NFSX_FATTR + 2*NFSX_UNSIGNED); |
9238aa59 | 173 | nfsm_build(fp, struct nfsv2_fattr *, NFSX_FATTR); |
e8540f59 | 174 | nfsm_srvfillattr; |
2c5b44a2 KM |
175 | if (nfsd->nd_nqlflag != NQL_NOVAL) { |
176 | nfsm_build(tl, u_long *, 2*NFSX_UNSIGNED); | |
177 | txdr_hyper(&frev2, tl); | |
178 | } | |
971b93e3 KM |
179 | nfsm_srvdone; |
180 | } | |
181 | ||
182 | /* | |
183 | * nfs lookup rpc | |
184 | */ | |
2c5b44a2 KM |
185 | nfsrv_lookup(nfsd, mrep, md, dpos, cred, nam, mrq) |
186 | struct nfsd *nfsd; | |
971b93e3 KM |
187 | struct mbuf *mrep, *md; |
188 | caddr_t dpos; | |
189 | struct ucred *cred; | |
2c5b44a2 | 190 | struct mbuf *nam, **mrq; |
971b93e3 | 191 | { |
9342689a | 192 | USES_VOP_GETATTR; |
9238aa59 | 193 | register struct nfsv2_fattr *fp; |
74c40d5a | 194 | struct nameidata nd; |
971b93e3 KM |
195 | struct vnode *vp; |
196 | nfsv2fh_t nfh; | |
197 | fhandle_t *fhp; | |
0bd503ad | 198 | register caddr_t cp; |
236c2c19 | 199 | register u_long *tl; |
0bd503ad KM |
200 | register long t1; |
201 | caddr_t bpos; | |
2c5b44a2 | 202 | int error = 0, lflag = 0, rdonly, cache, duration2, cache2, len; |
0bd503ad | 203 | char *cp2; |
e8540f59 | 204 | struct mbuf *mb, *mb2, *mreq; |
971b93e3 | 205 | struct vattr va, *vap = &va; |
2c5b44a2 | 206 | u_quad_t frev, frev2; |
971b93e3 KM |
207 | |
208 | fhp = &nfh.fh_generic; | |
2c5b44a2 KM |
209 | if (nfsd->nd_nqlflag != NQL_NOVAL) { |
210 | nfsm_dissect(tl, u_long *, NFSX_UNSIGNED); | |
211 | if (*tl) { | |
212 | lflag = fxdr_unsigned(int, *tl); | |
213 | nfsm_dissect(tl, u_long *, NFSX_UNSIGNED); | |
214 | duration2 = fxdr_unsigned(int, *tl); | |
215 | } | |
216 | } | |
971b93e3 KM |
217 | nfsm_srvmtofh(fhp); |
218 | nfsm_srvstrsiz(len, NFS_MAXNAMLEN); | |
7bd310ea JH |
219 | nd.ni_cnd.cn_cred = cred; |
220 | nd.ni_cnd.cn_nameiop = LOOKUP; | |
221 | nd.ni_cnd.cn_flags = LOCKLEAF | SAVESTART; | |
d7ced647 KM |
222 | if (error = nfs_namei(&nd, fhp, len, nfsd->nd_slp, nam, &md, &dpos, |
223 | nfsd->nd_procp)) | |
971b93e3 | 224 | nfsm_reply(0); |
2c5b44a2 KM |
225 | nqsrv_getl(nd.ni_startdir, NQL_READ); |
226 | vrele(nd.ni_startdir); | |
d7ced647 | 227 | FREE(nd.ni_cnd.cn_pnbuf, M_NAMEI); |
74c40d5a | 228 | vp = nd.ni_vp; |
971b93e3 | 229 | bzero((caddr_t)fhp, sizeof(nfh)); |
54fb9dc2 | 230 | fhp->fh_fsid = vp->v_mount->mnt_stat.f_fsid; |
971b93e3 KM |
231 | if (error = VFS_VPTOFH(vp, &fhp->fh_fid)) { |
232 | vput(vp); | |
233 | nfsm_reply(0); | |
234 | } | |
2c5b44a2 KM |
235 | if (lflag) |
236 | (void) nqsrv_getlease(vp, &duration2, lflag, nfsd, | |
237 | nam, &cache2, &frev2, cred); | |
238 | error = VOP_GETATTR(vp, vap, cred, nfsd->nd_procp); | |
971b93e3 | 239 | vput(vp); |
2c5b44a2 KM |
240 | nfsm_reply(NFSX_FH + NFSX_FATTR + 5*NFSX_UNSIGNED); |
241 | if (nfsd->nd_nqlflag != NQL_NOVAL) { | |
242 | if (lflag) { | |
243 | nfsm_build(tl, u_long *, 5*NFSX_UNSIGNED); | |
244 | *tl++ = txdr_unsigned(lflag); | |
245 | *tl++ = txdr_unsigned(cache2); | |
246 | *tl++ = txdr_unsigned(duration2); | |
247 | txdr_hyper(&frev2, tl); | |
248 | } else { | |
249 | nfsm_build(tl, u_long *, NFSX_UNSIGNED); | |
250 | *tl = 0; | |
251 | } | |
252 | } | |
971b93e3 | 253 | nfsm_srvfhtom(fhp); |
9238aa59 | 254 | nfsm_build(fp, struct nfsv2_fattr *, NFSX_FATTR); |
e8540f59 | 255 | nfsm_srvfillattr; |
971b93e3 KM |
256 | nfsm_srvdone; |
257 | } | |
258 | ||
259 | /* | |
260 | * nfs readlink service | |
261 | */ | |
2c5b44a2 KM |
262 | nfsrv_readlink(nfsd, mrep, md, dpos, cred, nam, mrq) |
263 | struct nfsd *nfsd; | |
971b93e3 KM |
264 | struct mbuf *mrep, *md; |
265 | caddr_t dpos; | |
266 | struct ucred *cred; | |
2c5b44a2 | 267 | struct mbuf *nam, **mrq; |
971b93e3 | 268 | { |
9342689a | 269 | USES_VOP_READLINK; |
f0f1cbaa | 270 | struct iovec iv[(NFS_MAXPATHLEN+MLEN-1)/MLEN]; |
971b93e3 KM |
271 | register struct iovec *ivp = iv; |
272 | register struct mbuf *mp; | |
236c2c19 | 273 | register u_long *tl; |
0bd503ad KM |
274 | register long t1; |
275 | caddr_t bpos; | |
2c5b44a2 | 276 | int error = 0, rdonly, cache, i, tlen, len; |
0bd503ad | 277 | char *cp2; |
e8540f59 | 278 | struct mbuf *mb, *mb2, *mp2, *mp3, *mreq; |
971b93e3 KM |
279 | struct vnode *vp; |
280 | nfsv2fh_t nfh; | |
281 | fhandle_t *fhp; | |
282 | struct uio io, *uiop = &io; | |
2c5b44a2 | 283 | u_quad_t frev; |
971b93e3 KM |
284 | |
285 | fhp = &nfh.fh_generic; | |
286 | nfsm_srvmtofh(fhp); | |
287 | len = 0; | |
288 | i = 0; | |
289 | while (len < NFS_MAXPATHLEN) { | |
290 | MGET(mp, M_WAIT, MT_DATA); | |
f0f1cbaa | 291 | MCLGET(mp, M_WAIT); |
971b93e3 KM |
292 | mp->m_len = NFSMSIZ(mp); |
293 | if (len == 0) | |
294 | mp3 = mp2 = mp; | |
f0f1cbaa | 295 | else { |
971b93e3 | 296 | mp2->m_next = mp; |
f0f1cbaa KM |
297 | mp2 = mp; |
298 | } | |
971b93e3 KM |
299 | if ((len+mp->m_len) > NFS_MAXPATHLEN) { |
300 | mp->m_len = NFS_MAXPATHLEN-len; | |
301 | len = NFS_MAXPATHLEN; | |
302 | } else | |
303 | len += mp->m_len; | |
304 | ivp->iov_base = mtod(mp, caddr_t); | |
305 | ivp->iov_len = mp->m_len; | |
306 | i++; | |
307 | ivp++; | |
308 | } | |
309 | uiop->uio_iov = iv; | |
310 | uiop->uio_iovcnt = i; | |
311 | uiop->uio_offset = 0; | |
312 | uiop->uio_resid = len; | |
313 | uiop->uio_rw = UIO_READ; | |
314 | uiop->uio_segflg = UIO_SYSSPACE; | |
236c2c19 | 315 | uiop->uio_procp = (struct proc *)0; |
2c5b44a2 | 316 | if (error = nfsrv_fhtovp(fhp, TRUE, &vp, cred, nfsd->nd_slp, nam, &rdonly)) { |
971b93e3 KM |
317 | m_freem(mp3); |
318 | nfsm_reply(0); | |
319 | } | |
320 | if (vp->v_type != VLNK) { | |
321 | error = EINVAL; | |
322 | goto out; | |
323 | } | |
2c5b44a2 | 324 | nqsrv_getl(vp, NQL_READ); |
971b93e3 KM |
325 | error = VOP_READLINK(vp, uiop, cred); |
326 | out: | |
327 | vput(vp); | |
328 | if (error) | |
329 | m_freem(mp3); | |
330 | nfsm_reply(NFSX_UNSIGNED); | |
331 | if (uiop->uio_resid > 0) { | |
332 | len -= uiop->uio_resid; | |
333 | tlen = nfsm_rndup(len); | |
334 | nfsm_adj(mp3, NFS_MAXPATHLEN-tlen, tlen-len); | |
335 | } | |
236c2c19 KM |
336 | nfsm_build(tl, u_long *, NFSX_UNSIGNED); |
337 | *tl = txdr_unsigned(len); | |
971b93e3 KM |
338 | mb->m_next = mp3; |
339 | nfsm_srvdone; | |
340 | } | |
341 | ||
342 | /* | |
343 | * nfs read service | |
344 | */ | |
2c5b44a2 KM |
345 | nfsrv_read(nfsd, mrep, md, dpos, cred, nam, mrq) |
346 | struct nfsd *nfsd; | |
971b93e3 KM |
347 | struct mbuf *mrep, *md; |
348 | caddr_t dpos; | |
349 | struct ucred *cred; | |
2c5b44a2 | 350 | struct mbuf *nam, **mrq; |
971b93e3 | 351 | { |
9342689a JH |
352 | USES_VOP_GETATTR; |
353 | USES_VOP_READ; | |
170bfd05 KM |
354 | register struct iovec *iv; |
355 | struct iovec *iv2; | |
f0f1cbaa | 356 | register struct mbuf *m; |
9238aa59 | 357 | register struct nfsv2_fattr *fp; |
236c2c19 | 358 | register u_long *tl; |
0bd503ad KM |
359 | register long t1; |
360 | caddr_t bpos; | |
2c5b44a2 | 361 | int error = 0, rdonly, cache, i, cnt, len, left, siz, tlen; |
0bd503ad | 362 | char *cp2; |
e8540f59 | 363 | struct mbuf *mb, *mb2, *mreq; |
2c5b44a2 | 364 | struct mbuf *m2; |
971b93e3 KM |
365 | struct vnode *vp; |
366 | nfsv2fh_t nfh; | |
367 | fhandle_t *fhp; | |
368 | struct uio io, *uiop = &io; | |
369 | struct vattr va, *vap = &va; | |
971b93e3 | 370 | off_t off; |
2c5b44a2 | 371 | u_quad_t frev; |
971b93e3 KM |
372 | |
373 | fhp = &nfh.fh_generic; | |
374 | nfsm_srvmtofh(fhp); | |
2c5b44a2 | 375 | nfsm_dissect(tl, u_long *, NFSX_UNSIGNED); |
236c2c19 | 376 | off = fxdr_unsigned(off_t, *tl); |
971b93e3 | 377 | nfsm_srvstrsiz(cnt, NFS_MAXDATA); |
2c5b44a2 | 378 | if (error = nfsrv_fhtovp(fhp, TRUE, &vp, cred, nfsd->nd_slp, nam, &rdonly)) |
971b93e3 | 379 | nfsm_reply(0); |
2c5b44a2 KM |
380 | nqsrv_getl(vp, NQL_READ); |
381 | if (error = nfsrv_access(vp, VREAD | VEXEC, cred, rdonly, nfsd->nd_procp)) { | |
971b93e3 KM |
382 | vput(vp); |
383 | nfsm_reply(0); | |
384 | } | |
2c5b44a2 | 385 | if (error = VOP_GETATTR(vp, vap, cred, nfsd->nd_procp)) { |
971b93e3 KM |
386 | vput(vp); |
387 | nfsm_reply(0); | |
388 | } | |
2c5b44a2 KM |
389 | if (off >= vap->va_size) |
390 | cnt = 0; | |
391 | else if ((off + cnt) > vap->va_size) | |
392 | cnt = nfsm_rndup(vap->va_size - off); | |
393 | nfsm_reply(NFSX_FATTR+NFSX_UNSIGNED+nfsm_rndup(cnt)); | |
9238aa59 | 394 | nfsm_build(fp, struct nfsv2_fattr *, NFSX_FATTR); |
2c5b44a2 KM |
395 | nfsm_build(tl, u_long *, NFSX_UNSIGNED); |
396 | len = left = cnt; | |
397 | if (cnt > 0) { | |
398 | /* | |
399 | * Generate the mbuf list with the uio_iov ref. to it. | |
400 | */ | |
401 | i = 0; | |
402 | m = m2 = mb; | |
403 | MALLOC(iv, struct iovec *, | |
404 | ((NFS_MAXDATA+MLEN-1)/MLEN) * sizeof (struct iovec), | |
405 | M_TEMP, M_WAITOK); | |
406 | iv2 = iv; | |
407 | while (left > 0) { | |
408 | siz = MIN(M_TRAILINGSPACE(m), left); | |
409 | if (siz > 0) { | |
410 | m->m_len += siz; | |
411 | iv->iov_base = bpos; | |
412 | iv->iov_len = siz; | |
413 | iv++; | |
414 | i++; | |
415 | left -= siz; | |
416 | } | |
417 | if (left > 0) { | |
418 | MGET(m, M_WAIT, MT_DATA); | |
419 | MCLGET(m, M_WAIT); | |
420 | m->m_len = 0; | |
421 | m2->m_next = m; | |
422 | m2 = m; | |
423 | bpos = mtod(m, caddr_t); | |
424 | } | |
425 | } | |
426 | uiop->uio_iov = iv2; | |
427 | uiop->uio_iovcnt = i; | |
428 | uiop->uio_offset = off; | |
429 | uiop->uio_resid = cnt; | |
430 | uiop->uio_rw = UIO_READ; | |
431 | uiop->uio_segflg = UIO_SYSSPACE; | |
432 | error = VOP_READ(vp, uiop, IO_NODELOCKED, cred); | |
433 | off = uiop->uio_offset; | |
434 | FREE((caddr_t)iv2, M_TEMP); | |
435 | if (error || (error = VOP_GETATTR(vp, vap, cred, nfsd->nd_procp))) { | |
436 | m_freem(mreq); | |
437 | vput(vp); | |
438 | nfsm_reply(0); | |
439 | } | |
440 | } else | |
441 | uiop->uio_resid = 0; | |
442 | vput(vp); | |
e8540f59 | 443 | nfsm_srvfillattr; |
25951042 | 444 | len -= uiop->uio_resid; |
2c5b44a2 KM |
445 | tlen = nfsm_rndup(len); |
446 | if (cnt != tlen || tlen != len) | |
447 | nfsm_adj(mb, cnt-tlen, tlen-len); | |
236c2c19 | 448 | *tl = txdr_unsigned(len); |
971b93e3 KM |
449 | nfsm_srvdone; |
450 | } | |
451 | ||
452 | /* | |
453 | * nfs write service | |
454 | */ | |
2c5b44a2 KM |
455 | nfsrv_write(nfsd, mrep, md, dpos, cred, nam, mrq) |
456 | struct nfsd *nfsd; | |
457 | struct mbuf *mrep, *md; | |
971b93e3 KM |
458 | caddr_t dpos; |
459 | struct ucred *cred; | |
2c5b44a2 | 460 | struct mbuf *nam, **mrq; |
971b93e3 | 461 | { |
9342689a JH |
462 | USES_VOP_GETATTR; |
463 | USES_VOP_WRITE; | |
971b93e3 KM |
464 | register struct iovec *ivp; |
465 | register struct mbuf *mp; | |
9238aa59 | 466 | register struct nfsv2_fattr *fp; |
f0f1cbaa | 467 | struct iovec iv[NFS_MAXIOVEC]; |
971b93e3 KM |
468 | struct vattr va; |
469 | register struct vattr *vap = &va; | |
236c2c19 | 470 | register u_long *tl; |
0bd503ad KM |
471 | register long t1; |
472 | caddr_t bpos; | |
2c5b44a2 | 473 | int error = 0, rdonly, cache, siz, len, xfer; |
0bd503ad | 474 | char *cp2; |
e8540f59 | 475 | struct mbuf *mb, *mb2, *mreq; |
971b93e3 KM |
476 | struct vnode *vp; |
477 | nfsv2fh_t nfh; | |
478 | fhandle_t *fhp; | |
479 | struct uio io, *uiop = &io; | |
480 | off_t off; | |
2c5b44a2 | 481 | u_quad_t frev; |
971b93e3 KM |
482 | |
483 | fhp = &nfh.fh_generic; | |
484 | nfsm_srvmtofh(fhp); | |
2c5b44a2 | 485 | nfsm_dissect(tl, u_long *, 4*NFSX_UNSIGNED); |
236c2c19 KM |
486 | off = fxdr_unsigned(off_t, *++tl); |
487 | tl += 2; | |
488 | len = fxdr_unsigned(long, *tl); | |
971b93e3 KM |
489 | if (len > NFS_MAXDATA || len <= 0) { |
490 | error = EBADRPC; | |
491 | nfsm_reply(0); | |
492 | } | |
493 | if (dpos == (mtod(md, caddr_t)+md->m_len)) { | |
494 | mp = md->m_next; | |
495 | if (mp == NULL) { | |
496 | error = EBADRPC; | |
497 | nfsm_reply(0); | |
498 | } | |
499 | } else { | |
500 | mp = md; | |
501 | siz = dpos-mtod(mp, caddr_t); | |
502 | mp->m_len -= siz; | |
503 | NFSMADV(mp, siz); | |
504 | } | |
2c5b44a2 | 505 | if (error = nfsrv_fhtovp(fhp, TRUE, &vp, cred, nfsd->nd_slp, nam, &rdonly)) |
971b93e3 | 506 | nfsm_reply(0); |
2c5b44a2 KM |
507 | nqsrv_getl(vp, NQL_WRITE); |
508 | if (error = nfsrv_access(vp, VWRITE, cred, rdonly, nfsd->nd_procp)) { | |
971b93e3 KM |
509 | vput(vp); |
510 | nfsm_reply(0); | |
511 | } | |
512 | uiop->uio_resid = 0; | |
513 | uiop->uio_rw = UIO_WRITE; | |
514 | uiop->uio_segflg = UIO_SYSSPACE; | |
236c2c19 | 515 | uiop->uio_procp = (struct proc *)0; |
971b93e3 | 516 | /* |
f0f1cbaa | 517 | * Do up to NFS_MAXIOVEC mbufs of write each iteration of the |
971b93e3 KM |
518 | * loop until done. |
519 | */ | |
520 | while (len > 0 && uiop->uio_resid == 0) { | |
521 | ivp = iv; | |
522 | siz = 0; | |
523 | uiop->uio_iov = ivp; | |
524 | uiop->uio_iovcnt = 0; | |
525 | uiop->uio_offset = off; | |
f0f1cbaa | 526 | while (len > 0 && uiop->uio_iovcnt < NFS_MAXIOVEC && mp != NULL) { |
971b93e3 KM |
527 | ivp->iov_base = mtod(mp, caddr_t); |
528 | if (len < mp->m_len) | |
529 | ivp->iov_len = xfer = len; | |
530 | else | |
531 | ivp->iov_len = xfer = mp->m_len; | |
532 | #ifdef notdef | |
533 | /* Not Yet .. */ | |
534 | if (M_HASCL(mp) && (((u_long)ivp->iov_base) & CLOFSET) == 0) | |
535 | ivp->iov_op = NULL; /* what should it be ?? */ | |
536 | else | |
537 | ivp->iov_op = NULL; | |
538 | #endif | |
539 | uiop->uio_iovcnt++; | |
540 | ivp++; | |
541 | len -= xfer; | |
542 | siz += xfer; | |
543 | mp = mp->m_next; | |
544 | } | |
545 | if (len > 0 && mp == NULL) { | |
546 | error = EBADRPC; | |
547 | vput(vp); | |
548 | nfsm_reply(0); | |
549 | } | |
550 | uiop->uio_resid = siz; | |
e9843ca3 | 551 | if (error = VOP_WRITE(vp, uiop, IO_SYNC | IO_NODELOCKED, |
971b93e3 KM |
552 | cred)) { |
553 | vput(vp); | |
554 | nfsm_reply(0); | |
555 | } | |
e9843ca3 | 556 | off = uiop->uio_offset; |
971b93e3 | 557 | } |
2c5b44a2 | 558 | error = VOP_GETATTR(vp, vap, cred, nfsd->nd_procp); |
971b93e3 KM |
559 | vput(vp); |
560 | nfsm_reply(NFSX_FATTR); | |
9238aa59 | 561 | nfsm_build(fp, struct nfsv2_fattr *, NFSX_FATTR); |
e8540f59 | 562 | nfsm_srvfillattr; |
e88c7c85 KM |
563 | if (nfsd->nd_nqlflag != NQL_NOVAL) { |
564 | nfsm_build(tl, u_long *, 2*NFSX_UNSIGNED); | |
565 | txdr_hyper(&vap->va_filerev, tl); | |
566 | } | |
971b93e3 KM |
567 | nfsm_srvdone; |
568 | } | |
569 | ||
570 | /* | |
571 | * nfs create service | |
572 | * now does a truncate to 0 length via. setattr if it already exists | |
573 | */ | |
2c5b44a2 KM |
574 | nfsrv_create(nfsd, mrep, md, dpos, cred, nam, mrq) |
575 | struct nfsd *nfsd; | |
576 | struct mbuf *mrep, *md; | |
971b93e3 KM |
577 | caddr_t dpos; |
578 | struct ucred *cred; | |
2c5b44a2 | 579 | struct mbuf *nam, **mrq; |
971b93e3 | 580 | { |
9342689a JH |
581 | USES_VOP_ABORTOP; |
582 | USES_VOP_CREATE; | |
583 | USES_VOP_GETATTR; | |
584 | USES_VOP_MKNOD; | |
585 | USES_VOP_SETATTR; | |
9238aa59 | 586 | register struct nfsv2_fattr *fp; |
971b93e3 KM |
587 | struct vattr va; |
588 | register struct vattr *vap = &va; | |
74c40d5a | 589 | struct nameidata nd; |
0bd503ad | 590 | register caddr_t cp; |
236c2c19 | 591 | register u_long *tl; |
0bd503ad KM |
592 | register long t1; |
593 | caddr_t bpos; | |
2c5b44a2 | 594 | int error = 0, rdev, cache, len; |
0bd503ad | 595 | char *cp2; |
e8540f59 | 596 | struct mbuf *mb, *mb2, *mreq; |
971b93e3 KM |
597 | struct vnode *vp; |
598 | nfsv2fh_t nfh; | |
599 | fhandle_t *fhp; | |
2c5b44a2 | 600 | u_quad_t frev; |
971b93e3 | 601 | |
7bd310ea | 602 | nd.ni_cnd.cn_nameiop = 0; |
971b93e3 KM |
603 | fhp = &nfh.fh_generic; |
604 | nfsm_srvmtofh(fhp); | |
605 | nfsm_srvstrsiz(len, NFS_MAXNAMLEN); | |
7bd310ea JH |
606 | nd.ni_cnd.cn_cred = cred; |
607 | nd.ni_cnd.cn_nameiop = CREATE; | |
608 | nd.ni_cnd.cn_flags = LOCKPARENT | LOCKLEAF | SAVESTART; | |
d7ced647 KM |
609 | if (error = nfs_namei(&nd, fhp, len, nfsd->nd_slp, nam, &md, &dpos, |
610 | nfsd->nd_procp)) | |
971b93e3 | 611 | nfsm_reply(0); |
3ee1461b | 612 | VATTR_NULL(vap); |
2c5b44a2 | 613 | nfsm_dissect(tl, u_long *, NFSX_SATTR); |
971b93e3 KM |
614 | /* |
615 | * Iff doesn't exist, create it | |
616 | * otherwise just truncate to 0 length | |
617 | * should I set the mode too ?? | |
618 | */ | |
74c40d5a | 619 | if (nd.ni_vp == NULL) { |
236c2c19 | 620 | vap->va_type = IFTOVT(fxdr_unsigned(u_long, *tl)); |
4249699a KM |
621 | if (vap->va_type == VNON) |
622 | vap->va_type = VREG; | |
236c2c19 KM |
623 | vap->va_mode = nfstov_mode(*tl); |
624 | rdev = fxdr_unsigned(long, *(tl+3)); | |
1c89915d | 625 | if (vap->va_type == VREG || vap->va_type == VSOCK) { |
5e03b55d | 626 | p->p_spare[1]--; |
74c40d5a | 627 | vrele(nd.ni_startdir); |
2c5b44a2 | 628 | nqsrv_getl(nd.ni_dvp, NQL_WRITE); |
cfef4373 | 629 | if (error = VOP_CREATE(nd.ni_dvp, &nd.ni_vp, &nd.ni_cnd, vap)) |
d4e5799e | 630 | nfsm_reply(0); |
7bd310ea | 631 | FREE(nd.ni_cnd.cn_pnbuf, M_NAMEI); |
d4e5799e KM |
632 | } else if (vap->va_type == VCHR || vap->va_type == VBLK || |
633 | vap->va_type == VFIFO) { | |
634 | if (vap->va_type == VCHR && rdev == 0xffffffff) | |
635 | vap->va_type = VFIFO; | |
636 | if (vap->va_type == VFIFO) { | |
637 | #ifndef FIFO | |
cfef4373 | 638 | VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd); |
74c40d5a | 639 | vput(nd.ni_dvp); |
d4e5799e | 640 | error = ENXIO; |
74c40d5a | 641 | goto out; |
d4e5799e | 642 | #endif /* FIFO */ |
2c5b44a2 | 643 | } else if (error = suser(cred, (u_short *)0)) { |
cfef4373 | 644 | VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd); |
74c40d5a KM |
645 | vput(nd.ni_dvp); |
646 | goto out; | |
d4e5799e KM |
647 | } else |
648 | vap->va_rdev = (dev_t)rdev; | |
2c5b44a2 | 649 | nqsrv_getl(nd.ni_dvp, NQL_WRITE); |
cfef4373 | 650 | if (error = VOP_MKNOD(nd.ni_dvp, &nd.ni_vp, &nd.ni_cnd, vap)) { |
5e03b55d | 651 | p->p_spare[1]--; |
74c40d5a | 652 | vrele(nd.ni_startdir); |
d4e5799e | 653 | nfsm_reply(0); |
74c40d5a | 654 | } |
7bd310ea JH |
655 | nd.ni_cnd.cn_nameiop = LOOKUP; |
656 | nd.ni_cnd.cn_flags &= ~(LOCKPARENT | SAVESTART); | |
657 | nd.ni_cnd.cn_proc = nfsd->nd_procp; | |
658 | nd.ni_cnd.cn_cred = nfsd->nd_procp->p_ucred; | |
659 | if (error = lookup(&nd)) { | |
660 | free(nd.ni_cnd.cn_pnbuf, M_NAMEI); | |
d4e5799e | 661 | nfsm_reply(0); |
74c40d5a | 662 | } |
7bd310ea JH |
663 | FREE(nd.ni_cnd.cn_pnbuf, M_NAMEI); |
664 | if (nd.ni_cnd.cn_flags & ISSYMLINK) { | |
74c40d5a KM |
665 | vrele(nd.ni_dvp); |
666 | vput(nd.ni_vp); | |
cfef4373 | 667 | VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd); |
74c40d5a KM |
668 | error = EINVAL; |
669 | nfsm_reply(0); | |
670 | } | |
d4e5799e | 671 | } else { |
cfef4373 | 672 | VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd); |
74c40d5a | 673 | vput(nd.ni_dvp); |
d4e5799e | 674 | error = ENXIO; |
74c40d5a | 675 | goto out; |
d4e5799e | 676 | } |
74c40d5a | 677 | vp = nd.ni_vp; |
971b93e3 | 678 | } else { |
5e03b55d | 679 | p->p_spare[1]--; |
74c40d5a | 680 | vrele(nd.ni_startdir); |
7bd310ea | 681 | free(nd.ni_cnd.cn_pnbuf, M_NAMEI); |
74c40d5a KM |
682 | vp = nd.ni_vp; |
683 | if (nd.ni_dvp == vp) | |
684 | vrele(nd.ni_dvp); | |
639383fa | 685 | else |
74c40d5a | 686 | vput(nd.ni_dvp); |
cfef4373 | 687 | VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd); |
971b93e3 | 688 | vap->va_size = 0; |
2c5b44a2 KM |
689 | nqsrv_getl(vp, NQL_WRITE); |
690 | if (error = VOP_SETATTR(vp, vap, cred, nfsd->nd_procp)) { | |
383e7b4c | 691 | vput(vp); |
971b93e3 | 692 | nfsm_reply(0); |
383e7b4c | 693 | } |
971b93e3 | 694 | } |
971b93e3 | 695 | bzero((caddr_t)fhp, sizeof(nfh)); |
54fb9dc2 | 696 | fhp->fh_fsid = vp->v_mount->mnt_stat.f_fsid; |
971b93e3 KM |
697 | if (error = VFS_VPTOFH(vp, &fhp->fh_fid)) { |
698 | vput(vp); | |
699 | nfsm_reply(0); | |
700 | } | |
2c5b44a2 | 701 | error = VOP_GETATTR(vp, vap, cred, nfsd->nd_procp); |
971b93e3 KM |
702 | vput(vp); |
703 | nfsm_reply(NFSX_FH+NFSX_FATTR); | |
704 | nfsm_srvfhtom(fhp); | |
9238aa59 | 705 | nfsm_build(fp, struct nfsv2_fattr *, NFSX_FATTR); |
e8540f59 | 706 | nfsm_srvfillattr; |
971b93e3 KM |
707 | return (error); |
708 | nfsmout: | |
7bd310ea | 709 | if (nd.ni_cnd.cn_nameiop || nd.ni_cnd.cn_flags) |
5e03b55d | 710 | p->p_spare[1]--, vrele(nd.ni_startdir); |
cfef4373 | 711 | VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd); |
74c40d5a KM |
712 | if (nd.ni_dvp == nd.ni_vp) |
713 | vrele(nd.ni_dvp); | |
639383fa | 714 | else |
74c40d5a KM |
715 | vput(nd.ni_dvp); |
716 | if (nd.ni_vp) | |
717 | vput(nd.ni_vp); | |
971b93e3 | 718 | return (error); |
74c40d5a KM |
719 | |
720 | out: | |
5e03b55d | 721 | p->p_spare[1]--; |
74c40d5a | 722 | vrele(nd.ni_startdir); |
7bd310ea | 723 | free(nd.ni_cnd.cn_pnbuf, M_NAMEI); |
74c40d5a | 724 | nfsm_reply(0); |
971b93e3 KM |
725 | } |
726 | ||
727 | /* | |
728 | * nfs remove service | |
729 | */ | |
2c5b44a2 KM |
730 | nfsrv_remove(nfsd, mrep, md, dpos, cred, nam, mrq) |
731 | struct nfsd *nfsd; | |
732 | struct mbuf *mrep, *md; | |
971b93e3 KM |
733 | caddr_t dpos; |
734 | struct ucred *cred; | |
2c5b44a2 | 735 | struct mbuf *nam, **mrq; |
971b93e3 | 736 | { |
9342689a JH |
737 | USES_VOP_ABORTOP; |
738 | USES_VOP_REMOVE; | |
74c40d5a | 739 | struct nameidata nd; |
236c2c19 | 740 | register u_long *tl; |
0bd503ad KM |
741 | register long t1; |
742 | caddr_t bpos; | |
2c5b44a2 | 743 | int error = 0, cache, len; |
0bd503ad | 744 | char *cp2; |
e8540f59 | 745 | struct mbuf *mb, *mreq; |
971b93e3 KM |
746 | struct vnode *vp; |
747 | nfsv2fh_t nfh; | |
748 | fhandle_t *fhp; | |
2c5b44a2 | 749 | u_quad_t frev; |
971b93e3 KM |
750 | |
751 | fhp = &nfh.fh_generic; | |
752 | nfsm_srvmtofh(fhp); | |
753 | nfsm_srvstrsiz(len, NFS_MAXNAMLEN); | |
7bd310ea JH |
754 | nd.ni_cnd.cn_cred = cred; |
755 | nd.ni_cnd.cn_nameiop = DELETE; | |
756 | nd.ni_cnd.cn_flags = LOCKPARENT | LOCKLEAF; | |
d7ced647 KM |
757 | if (error = nfs_namei(&nd, fhp, len, nfsd->nd_slp, nam, &md, &dpos, |
758 | nfsd->nd_procp)) | |
971b93e3 | 759 | nfsm_reply(0); |
74c40d5a | 760 | vp = nd.ni_vp; |
971b93e3 | 761 | if (vp->v_type == VDIR && |
2c5b44a2 | 762 | (error = suser(cred, (u_short *)0))) |
971b93e3 KM |
763 | goto out; |
764 | /* | |
4b0bcec3 | 765 | * The root of a mounted filesystem cannot be deleted. |
971b93e3 KM |
766 | */ |
767 | if (vp->v_flag & VROOT) { | |
768 | error = EBUSY; | |
769 | goto out; | |
770 | } | |
771 | if (vp->v_flag & VTEXT) | |
8986c97c | 772 | (void) vnode_pager_uncache(vp); |
971b93e3 | 773 | out: |
66955caf | 774 | if (!error) { |
2c5b44a2 KM |
775 | nqsrv_getl(nd.ni_dvp, NQL_WRITE); |
776 | nqsrv_getl(vp, NQL_WRITE); | |
cfef4373 | 777 | error = VOP_REMOVE(nd.ni_dvp, nd.ni_vp, &nd.ni_cnd); |
66955caf | 778 | } else { |
cfef4373 | 779 | VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd); |
74c40d5a KM |
780 | if (nd.ni_dvp == vp) |
781 | vrele(nd.ni_dvp); | |
639383fa | 782 | else |
74c40d5a | 783 | vput(nd.ni_dvp); |
66955caf KM |
784 | vput(vp); |
785 | } | |
971b93e3 KM |
786 | nfsm_reply(0); |
787 | nfsm_srvdone; | |
788 | } | |
789 | ||
790 | /* | |
791 | * nfs rename service | |
971b93e3 | 792 | */ |
2c5b44a2 KM |
793 | nfsrv_rename(nfsd, mrep, md, dpos, cred, nam, mrq) |
794 | struct nfsd *nfsd; | |
795 | struct mbuf *mrep, *md; | |
971b93e3 KM |
796 | caddr_t dpos; |
797 | struct ucred *cred; | |
2c5b44a2 | 798 | struct mbuf *nam, **mrq; |
971b93e3 | 799 | { |
9342689a JH |
800 | USES_VOP_ABORTOP; |
801 | USES_VOP_RENAME; | |
236c2c19 | 802 | register u_long *tl; |
0bd503ad KM |
803 | register long t1; |
804 | caddr_t bpos; | |
2c5b44a2 | 805 | int error = 0, rdonly, cache, len, len2; |
0bd503ad | 806 | char *cp2; |
e8540f59 | 807 | struct mbuf *mb, *mreq; |
74c40d5a | 808 | struct nameidata fromnd, tond; |
971b93e3 KM |
809 | struct vnode *fvp, *tvp, *tdvp; |
810 | nfsv2fh_t fnfh, tnfh; | |
811 | fhandle_t *ffhp, *tfhp; | |
2c5b44a2 KM |
812 | u_quad_t frev; |
813 | uid_t saved_uid; | |
971b93e3 | 814 | |
971b93e3 KM |
815 | ffhp = &fnfh.fh_generic; |
816 | tfhp = &tnfh.fh_generic; | |
7bd310ea JH |
817 | fromnd.ni_cnd.cn_nameiop = 0; |
818 | tond.ni_cnd.cn_nameiop = 0; | |
971b93e3 KM |
819 | nfsm_srvmtofh(ffhp); |
820 | nfsm_srvstrsiz(len, NFS_MAXNAMLEN); | |
821 | /* | |
2c5b44a2 KM |
822 | * Remember our original uid so that we can reset cr_uid before |
823 | * the second nfs_namei() call, in case it is remapped. | |
971b93e3 | 824 | */ |
2c5b44a2 | 825 | saved_uid = cred->cr_uid; |
7bd310ea JH |
826 | fromnd.ni_cnd.cn_cred = cred; |
827 | fromnd.ni_cnd.cn_nameiop = DELETE; | |
828 | fromnd.ni_cnd.cn_flags = WANTPARENT | SAVESTART; | |
d7ced647 KM |
829 | if (error = nfs_namei(&fromnd, ffhp, len, nfsd->nd_slp, nam, &md, |
830 | &dpos, nfsd->nd_procp)) | |
971b93e3 | 831 | nfsm_reply(0); |
74c40d5a | 832 | fvp = fromnd.ni_vp; |
971b93e3 | 833 | nfsm_srvmtofh(tfhp); |
f0f1cbaa | 834 | nfsm_strsiz(len2, NFS_MAXNAMLEN); |
2c5b44a2 | 835 | cred->cr_uid = saved_uid; |
7bd310ea JH |
836 | tond.ni_cnd.cn_cred = cred; |
837 | tond.ni_cnd.cn_nameiop = RENAME; | |
838 | tond.ni_cnd.cn_flags = LOCKPARENT | LOCKLEAF | NOCACHE | SAVESTART; | |
d7ced647 KM |
839 | if (error = nfs_namei(&tond, tfhp, len2, nfsd->nd_slp, nam, &md, |
840 | &dpos, nfsd->nd_procp)) { | |
cfef4373 | 841 | VOP_ABORTOP(fromnd.ni_dvp, &fromnd.ni_cnd); |
74c40d5a | 842 | vrele(fromnd.ni_dvp); |
66955caf KM |
843 | vrele(fvp); |
844 | goto out1; | |
845 | } | |
36c3043b KM |
846 | tdvp = tond.ni_dvp; |
847 | tvp = tond.ni_vp; | |
971b93e3 KM |
848 | if (tvp != NULL) { |
849 | if (fvp->v_type == VDIR && tvp->v_type != VDIR) { | |
850 | error = EISDIR; | |
851 | goto out; | |
852 | } else if (fvp->v_type != VDIR && tvp->v_type == VDIR) { | |
853 | error = ENOTDIR; | |
854 | goto out; | |
855 | } | |
2c5b44a2 KM |
856 | if (tvp->v_type == VDIR && tvp->v_mountedhere) { |
857 | error = EXDEV; | |
858 | goto out; | |
859 | } | |
860 | } | |
861 | if (fvp->v_type == VDIR && fvp->v_mountedhere) { | |
862 | error = EBUSY; | |
863 | goto out; | |
971b93e3 | 864 | } |
971b93e3 KM |
865 | if (fvp->v_mount != tdvp->v_mount) { |
866 | error = EXDEV; | |
867 | goto out; | |
868 | } | |
74c40d5a | 869 | if (fvp == tdvp) |
971b93e3 | 870 | error = EINVAL; |
74c40d5a KM |
871 | /* |
872 | * If source is the same as the destination (that is the | |
873 | * same vnode with the same name in the same directory), | |
874 | * then there is nothing to do. | |
875 | */ | |
876 | if (fvp == tvp && fromnd.ni_dvp == tdvp && | |
7bd310ea JH |
877 | fromnd.ni_cnd.cn_namelen == tond.ni_cnd.cn_namelen && |
878 | !bcmp(fromnd.ni_cnd.cn_nameptr, tond.ni_cnd.cn_nameptr, | |
879 | fromnd.ni_cnd.cn_namelen)) | |
74c40d5a | 880 | error = -1; |
971b93e3 | 881 | out: |
66955caf | 882 | if (!error) { |
2c5b44a2 KM |
883 | nqsrv_getl(fromnd.ni_dvp, NQL_WRITE); |
884 | nqsrv_getl(tdvp, NQL_WRITE); | |
885 | if (tvp) | |
886 | nqsrv_getl(tvp, NQL_WRITE); | |
cfef4373 JH |
887 | error = VOP_RENAME(fromnd.ni_dvp, fromnd.ni_vp, &fromnd.ni_cnd, |
888 | tond.ni_dvp, tond.ni_vp, &tond.ni_cnd); | |
66955caf | 889 | } else { |
cfef4373 | 890 | VOP_ABORTOP(tond.ni_dvp, &tond.ni_cnd); |
639383fa KM |
891 | if (tdvp == tvp) |
892 | vrele(tdvp); | |
893 | else | |
894 | vput(tdvp); | |
66955caf KM |
895 | if (tvp) |
896 | vput(tvp); | |
cfef4373 | 897 | VOP_ABORTOP(fromnd.ni_dvp, &fromnd.ni_cnd); |
74c40d5a | 898 | vrele(fromnd.ni_dvp); |
66955caf | 899 | vrele(fvp); |
971b93e3 | 900 | } |
5e03b55d | 901 | p->p_spare[1]--; |
10bae9ee | 902 | vrele(tond.ni_startdir); |
7bd310ea | 903 | FREE(tond.ni_cnd.cn_pnbuf, M_NAMEI); |
971b93e3 | 904 | out1: |
5e03b55d | 905 | p->p_spare[1]--; |
74c40d5a | 906 | vrele(fromnd.ni_startdir); |
7bd310ea | 907 | FREE(fromnd.ni_cnd.cn_pnbuf, M_NAMEI); |
971b93e3 KM |
908 | nfsm_reply(0); |
909 | return (error); | |
74c40d5a | 910 | |
971b93e3 | 911 | nfsmout: |
7bd310ea | 912 | if (tond.ni_cnd.cn_nameiop || tond.ni_cnd.cn_flags) { |
5e03b55d | 913 | p->p_spare[1]--; |
74c40d5a | 914 | vrele(tond.ni_startdir); |
7bd310ea | 915 | FREE(tond.ni_cnd.cn_pnbuf, M_NAMEI); |
74c40d5a | 916 | } |
7bd310ea | 917 | if (fromnd.ni_cnd.cn_nameiop || fromnd.ni_cnd.cn_flags) { |
5e03b55d | 918 | p->p_spare[1]--; |
74c40d5a | 919 | vrele(fromnd.ni_startdir); |
7bd310ea | 920 | FREE(fromnd.ni_cnd.cn_pnbuf, M_NAMEI); |
cfef4373 | 921 | VOP_ABORTOP(fromnd.ni_dvp, &fromnd.ni_cnd); |
74c40d5a KM |
922 | vrele(fromnd.ni_dvp); |
923 | vrele(fvp); | |
924 | } | |
971b93e3 KM |
925 | return (error); |
926 | } | |
927 | ||
928 | /* | |
929 | * nfs link service | |
930 | */ | |
2c5b44a2 KM |
931 | nfsrv_link(nfsd, mrep, md, dpos, cred, nam, mrq) |
932 | struct nfsd *nfsd; | |
933 | struct mbuf *mrep, *md; | |
971b93e3 KM |
934 | caddr_t dpos; |
935 | struct ucred *cred; | |
2c5b44a2 | 936 | struct mbuf *nam, **mrq; |
971b93e3 | 937 | { |
9342689a JH |
938 | USES_VOP_ABORTOP; |
939 | USES_VOP_LINK; | |
74c40d5a | 940 | struct nameidata nd; |
236c2c19 | 941 | register u_long *tl; |
0bd503ad KM |
942 | register long t1; |
943 | caddr_t bpos; | |
2c5b44a2 | 944 | int error = 0, rdonly, cache, len; |
0bd503ad | 945 | char *cp2; |
e8540f59 | 946 | struct mbuf *mb, *mreq; |
971b93e3 KM |
947 | struct vnode *vp, *xp; |
948 | nfsv2fh_t nfh, dnfh; | |
949 | fhandle_t *fhp, *dfhp; | |
2c5b44a2 | 950 | u_quad_t frev; |
971b93e3 KM |
951 | |
952 | fhp = &nfh.fh_generic; | |
953 | dfhp = &dnfh.fh_generic; | |
954 | nfsm_srvmtofh(fhp); | |
955 | nfsm_srvmtofh(dfhp); | |
956 | nfsm_srvstrsiz(len, NFS_MAXNAMLEN); | |
2c5b44a2 | 957 | if (error = nfsrv_fhtovp(fhp, FALSE, &vp, cred, nfsd->nd_slp, nam, &rdonly)) |
971b93e3 | 958 | nfsm_reply(0); |
2c5b44a2 | 959 | if (vp->v_type == VDIR && (error = suser(cred, (u_short *)0))) |
971b93e3 | 960 | goto out1; |
7bd310ea JH |
961 | nd.ni_cnd.cn_cred = cred; |
962 | nd.ni_cnd.cn_nameiop = CREATE; | |
963 | nd.ni_cnd.cn_flags = LOCKPARENT; | |
d7ced647 KM |
964 | if (error = nfs_namei(&nd, dfhp, len, nfsd->nd_slp, nam, &md, &dpos, |
965 | nfsd->nd_procp)) | |
971b93e3 | 966 | goto out1; |
74c40d5a | 967 | xp = nd.ni_vp; |
971b93e3 KM |
968 | if (xp != NULL) { |
969 | error = EEXIST; | |
970 | goto out; | |
971 | } | |
74c40d5a | 972 | xp = nd.ni_dvp; |
971b93e3 KM |
973 | if (vp->v_mount != xp->v_mount) |
974 | error = EXDEV; | |
975 | out: | |
66955caf | 976 | if (!error) { |
2c5b44a2 KM |
977 | nqsrv_getl(vp, NQL_WRITE); |
978 | nqsrv_getl(xp, NQL_WRITE); | |
e9b73376 | 979 | error = VOP_LINK(nd.ni_dvp, vp, &nd.ni_cnd); |
66955caf | 980 | } else { |
cfef4373 | 981 | VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd); |
74c40d5a KM |
982 | if (nd.ni_dvp == nd.ni_vp) |
983 | vrele(nd.ni_dvp); | |
639383fa | 984 | else |
74c40d5a KM |
985 | vput(nd.ni_dvp); |
986 | if (nd.ni_vp) | |
987 | vrele(nd.ni_vp); | |
66955caf | 988 | } |
971b93e3 KM |
989 | out1: |
990 | vrele(vp); | |
991 | nfsm_reply(0); | |
992 | nfsm_srvdone; | |
993 | } | |
994 | ||
995 | /* | |
996 | * nfs symbolic link service | |
997 | */ | |
2c5b44a2 KM |
998 | nfsrv_symlink(nfsd, mrep, md, dpos, cred, nam, mrq) |
999 | struct nfsd *nfsd; | |
1000 | struct mbuf *mrep, *md; | |
971b93e3 KM |
1001 | caddr_t dpos; |
1002 | struct ucred *cred; | |
2c5b44a2 | 1003 | struct mbuf *nam, **mrq; |
971b93e3 | 1004 | { |
9342689a JH |
1005 | USES_VOP_ABORTOP; |
1006 | USES_VOP_SYMLINK; | |
971b93e3 | 1007 | struct vattr va; |
74c40d5a | 1008 | struct nameidata nd; |
971b93e3 | 1009 | register struct vattr *vap = &va; |
236c2c19 | 1010 | register u_long *tl; |
0bd503ad | 1011 | register long t1; |
09e56da6 | 1012 | struct nfsv2_sattr *sp; |
0bd503ad | 1013 | caddr_t bpos; |
f0f1cbaa KM |
1014 | struct uio io; |
1015 | struct iovec iv; | |
2c5b44a2 | 1016 | int error = 0, rdonly, cache, len, len2; |
f0f1cbaa | 1017 | char *pathcp, *cp2; |
e8540f59 | 1018 | struct mbuf *mb, *mreq; |
971b93e3 KM |
1019 | nfsv2fh_t nfh; |
1020 | fhandle_t *fhp; | |
2c5b44a2 | 1021 | u_quad_t frev; |
971b93e3 | 1022 | |
f0f1cbaa | 1023 | pathcp = (char *)0; |
971b93e3 KM |
1024 | fhp = &nfh.fh_generic; |
1025 | nfsm_srvmtofh(fhp); | |
1026 | nfsm_srvstrsiz(len, NFS_MAXNAMLEN); | |
7bd310ea JH |
1027 | nd.ni_cnd.cn_cred = cred; |
1028 | nd.ni_cnd.cn_nameiop = CREATE; | |
1029 | nd.ni_cnd.cn_flags = LOCKPARENT; | |
d7ced647 KM |
1030 | if (error = nfs_namei(&nd, fhp, len, nfsd->nd_slp, nam, &md, &dpos, |
1031 | nfsd->nd_procp)) | |
66955caf | 1032 | goto out; |
f0f1cbaa KM |
1033 | nfsm_strsiz(len2, NFS_MAXPATHLEN); |
1034 | MALLOC(pathcp, caddr_t, len2 + 1, M_TEMP, M_WAITOK); | |
1035 | iv.iov_base = pathcp; | |
1036 | iv.iov_len = len2; | |
1037 | io.uio_resid = len2; | |
1038 | io.uio_offset = 0; | |
1039 | io.uio_iov = &iv; | |
1040 | io.uio_iovcnt = 1; | |
1041 | io.uio_segflg = UIO_SYSSPACE; | |
1042 | io.uio_rw = UIO_READ; | |
236c2c19 | 1043 | io.uio_procp = (struct proc *)0; |
f0f1cbaa | 1044 | nfsm_mtouio(&io, len2); |
2c5b44a2 | 1045 | nfsm_dissect(sp, struct nfsv2_sattr *, NFSX_SATTR); |
f0f1cbaa | 1046 | *(pathcp + len2) = '\0'; |
74c40d5a | 1047 | if (nd.ni_vp) { |
cfef4373 | 1048 | VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd); |
74c40d5a KM |
1049 | if (nd.ni_dvp == nd.ni_vp) |
1050 | vrele(nd.ni_dvp); | |
639383fa | 1051 | else |
74c40d5a KM |
1052 | vput(nd.ni_dvp); |
1053 | vrele(nd.ni_vp); | |
971b93e3 KM |
1054 | error = EEXIST; |
1055 | goto out; | |
1056 | } | |
3ee1461b | 1057 | VATTR_NULL(vap); |
09e56da6 | 1058 | vap->va_mode = fxdr_unsigned(u_short, sp->sa_mode); |
2c5b44a2 | 1059 | nqsrv_getl(nd.ni_dvp, NQL_WRITE); |
cfef4373 | 1060 | error = VOP_SYMLINK(nd.ni_dvp, &nd.ni_vp, &nd.ni_cnd, vap, pathcp); |
971b93e3 | 1061 | out: |
f0f1cbaa KM |
1062 | if (pathcp) |
1063 | FREE(pathcp, M_TEMP); | |
971b93e3 KM |
1064 | nfsm_reply(0); |
1065 | return (error); | |
1066 | nfsmout: | |
cfef4373 | 1067 | VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd); |
74c40d5a KM |
1068 | if (nd.ni_dvp == nd.ni_vp) |
1069 | vrele(nd.ni_dvp); | |
639383fa | 1070 | else |
74c40d5a KM |
1071 | vput(nd.ni_dvp); |
1072 | if (nd.ni_vp) | |
1073 | vrele(nd.ni_vp); | |
f0f1cbaa KM |
1074 | if (pathcp) |
1075 | FREE(pathcp, M_TEMP); | |
971b93e3 KM |
1076 | return (error); |
1077 | } | |
1078 | ||
1079 | /* | |
1080 | * nfs mkdir service | |
1081 | */ | |
2c5b44a2 KM |
1082 | nfsrv_mkdir(nfsd, mrep, md, dpos, cred, nam, mrq) |
1083 | struct nfsd *nfsd; | |
1084 | struct mbuf *mrep, *md; | |
971b93e3 KM |
1085 | caddr_t dpos; |
1086 | struct ucred *cred; | |
2c5b44a2 | 1087 | struct mbuf *nam, **mrq; |
971b93e3 | 1088 | { |
9342689a JH |
1089 | USES_VOP_ABORTOP; |
1090 | USES_VOP_GETATTR; | |
1091 | USES_VOP_MKDIR; | |
971b93e3 KM |
1092 | struct vattr va; |
1093 | register struct vattr *vap = &va; | |
9238aa59 | 1094 | register struct nfsv2_fattr *fp; |
74c40d5a | 1095 | struct nameidata nd; |
0bd503ad | 1096 | register caddr_t cp; |
236c2c19 | 1097 | register u_long *tl; |
0bd503ad KM |
1098 | register long t1; |
1099 | caddr_t bpos; | |
2c5b44a2 | 1100 | int error = 0, rdonly, cache, len; |
0bd503ad | 1101 | char *cp2; |
e8540f59 | 1102 | struct mbuf *mb, *mb2, *mreq; |
971b93e3 KM |
1103 | struct vnode *vp; |
1104 | nfsv2fh_t nfh; | |
1105 | fhandle_t *fhp; | |
2c5b44a2 | 1106 | u_quad_t frev; |
971b93e3 | 1107 | |
971b93e3 KM |
1108 | fhp = &nfh.fh_generic; |
1109 | nfsm_srvmtofh(fhp); | |
1110 | nfsm_srvstrsiz(len, NFS_MAXNAMLEN); | |
7bd310ea JH |
1111 | nd.ni_cnd.cn_cred = cred; |
1112 | nd.ni_cnd.cn_nameiop = CREATE; | |
1113 | nd.ni_cnd.cn_flags = LOCKPARENT; | |
d7ced647 KM |
1114 | if (error = nfs_namei(&nd, fhp, len, nfsd->nd_slp, nam, &md, &dpos, |
1115 | nfsd->nd_procp)) | |
971b93e3 | 1116 | nfsm_reply(0); |
2c5b44a2 | 1117 | nfsm_dissect(tl, u_long *, NFSX_UNSIGNED); |
3ee1461b | 1118 | VATTR_NULL(vap); |
971b93e3 | 1119 | vap->va_type = VDIR; |
236c2c19 | 1120 | vap->va_mode = nfstov_mode(*tl++); |
74c40d5a | 1121 | vp = nd.ni_vp; |
971b93e3 | 1122 | if (vp != NULL) { |
cfef4373 | 1123 | VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd); |
74c40d5a KM |
1124 | if (nd.ni_dvp == vp) |
1125 | vrele(nd.ni_dvp); | |
639383fa | 1126 | else |
74c40d5a | 1127 | vput(nd.ni_dvp); |
66955caf | 1128 | vrele(vp); |
971b93e3 KM |
1129 | error = EEXIST; |
1130 | nfsm_reply(0); | |
1131 | } | |
2c5b44a2 | 1132 | nqsrv_getl(nd.ni_dvp, NQL_WRITE); |
cfef4373 | 1133 | if (error = VOP_MKDIR(nd.ni_dvp, &nd.ni_vp, &nd.ni_cnd, vap)) |
971b93e3 | 1134 | nfsm_reply(0); |
74c40d5a | 1135 | vp = nd.ni_vp; |
971b93e3 | 1136 | bzero((caddr_t)fhp, sizeof(nfh)); |
54fb9dc2 | 1137 | fhp->fh_fsid = vp->v_mount->mnt_stat.f_fsid; |
971b93e3 KM |
1138 | if (error = VFS_VPTOFH(vp, &fhp->fh_fid)) { |
1139 | vput(vp); | |
1140 | nfsm_reply(0); | |
1141 | } | |
2c5b44a2 | 1142 | error = VOP_GETATTR(vp, vap, cred, nfsd->nd_procp); |
971b93e3 KM |
1143 | vput(vp); |
1144 | nfsm_reply(NFSX_FH+NFSX_FATTR); | |
1145 | nfsm_srvfhtom(fhp); | |
9238aa59 | 1146 | nfsm_build(fp, struct nfsv2_fattr *, NFSX_FATTR); |
e8540f59 | 1147 | nfsm_srvfillattr; |
971b93e3 KM |
1148 | return (error); |
1149 | nfsmout: | |
cfef4373 | 1150 | VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd); |
74c40d5a KM |
1151 | if (nd.ni_dvp == nd.ni_vp) |
1152 | vrele(nd.ni_dvp); | |
639383fa | 1153 | else |
74c40d5a KM |
1154 | vput(nd.ni_dvp); |
1155 | if (nd.ni_vp) | |
1156 | vrele(nd.ni_vp); | |
971b93e3 KM |
1157 | return (error); |
1158 | } | |
1159 | ||
1160 | /* | |
1161 | * nfs rmdir service | |
1162 | */ | |
2c5b44a2 KM |
1163 | nfsrv_rmdir(nfsd, mrep, md, dpos, cred, nam, mrq) |
1164 | struct nfsd *nfsd; | |
1165 | struct mbuf *mrep, *md; | |
971b93e3 KM |
1166 | caddr_t dpos; |
1167 | struct ucred *cred; | |
2c5b44a2 | 1168 | struct mbuf *nam, **mrq; |
971b93e3 | 1169 | { |
9342689a JH |
1170 | USES_VOP_ABORTOP; |
1171 | USES_VOP_RMDIR; | |
236c2c19 | 1172 | register u_long *tl; |
0bd503ad KM |
1173 | register long t1; |
1174 | caddr_t bpos; | |
2c5b44a2 | 1175 | int error = 0, rdonly, cache, len; |
0bd503ad | 1176 | char *cp2; |
e8540f59 | 1177 | struct mbuf *mb, *mreq; |
971b93e3 KM |
1178 | struct vnode *vp; |
1179 | nfsv2fh_t nfh; | |
1180 | fhandle_t *fhp; | |
74c40d5a | 1181 | struct nameidata nd; |
2c5b44a2 | 1182 | u_quad_t frev; |
971b93e3 KM |
1183 | |
1184 | fhp = &nfh.fh_generic; | |
1185 | nfsm_srvmtofh(fhp); | |
1186 | nfsm_srvstrsiz(len, NFS_MAXNAMLEN); | |
7bd310ea JH |
1187 | nd.ni_cnd.cn_cred = cred; |
1188 | nd.ni_cnd.cn_nameiop = DELETE; | |
1189 | nd.ni_cnd.cn_flags = LOCKPARENT | LOCKLEAF; | |
d7ced647 KM |
1190 | if (error = nfs_namei(&nd, fhp, len, nfsd->nd_slp, nam, &md, &dpos, |
1191 | nfsd->nd_procp)) | |
971b93e3 | 1192 | nfsm_reply(0); |
74c40d5a | 1193 | vp = nd.ni_vp; |
971b93e3 KM |
1194 | if (vp->v_type != VDIR) { |
1195 | error = ENOTDIR; | |
1196 | goto out; | |
1197 | } | |
1198 | /* | |
1199 | * No rmdir "." please. | |
1200 | */ | |
74c40d5a | 1201 | if (nd.ni_dvp == vp) { |
971b93e3 KM |
1202 | error = EINVAL; |
1203 | goto out; | |
1204 | } | |
1205 | /* | |
4b0bcec3 | 1206 | * The root of a mounted filesystem cannot be deleted. |
971b93e3 KM |
1207 | */ |
1208 | if (vp->v_flag & VROOT) | |
1209 | error = EBUSY; | |
1210 | out: | |
66955caf | 1211 | if (!error) { |
2c5b44a2 KM |
1212 | nqsrv_getl(nd.ni_dvp, NQL_WRITE); |
1213 | nqsrv_getl(vp, NQL_WRITE); | |
cfef4373 | 1214 | error = VOP_RMDIR(nd.ni_dvp, nd.ni_vp, &nd.ni_cnd); |
66955caf | 1215 | } else { |
cfef4373 | 1216 | VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd); |
74c40d5a KM |
1217 | if (nd.ni_dvp == nd.ni_vp) |
1218 | vrele(nd.ni_dvp); | |
639383fa | 1219 | else |
74c40d5a | 1220 | vput(nd.ni_dvp); |
66955caf KM |
1221 | vput(vp); |
1222 | } | |
971b93e3 KM |
1223 | nfsm_reply(0); |
1224 | nfsm_srvdone; | |
1225 | } | |
1226 | ||
1227 | /* | |
1228 | * nfs readdir service | |
1229 | * - mallocs what it thinks is enough to read | |
236c2c19 | 1230 | * count rounded up to a multiple of NFS_DIRBLKSIZ <= NFS_MAXREADDIR |
971b93e3 | 1231 | * - calls VOP_READDIR() |
732aefe9 | 1232 | * - loops around building the reply |
36c3043b KM |
1233 | * if the output generated exceeds count break out of loop |
1234 | * The nfsm_clget macro is used here so that the reply will be packed | |
1235 | * tightly in mbuf clusters. | |
971b93e3 | 1236 | * - it only knows that it has encountered eof when the VOP_READDIR() |
36c3043b | 1237 | * reads nothing |
971b93e3 | 1238 | * - as such one readdir rpc will return eof false although you are there |
36c3043b | 1239 | * and then the next will return eof |
8d0670ad | 1240 | * - it trims out records with d_fileno == 0 |
36c3043b KM |
1241 | * this doesn't matter for Unix clients, but they might confuse clients |
1242 | * for other os'. | |
971b93e3 | 1243 | * NB: It is tempting to set eof to true if the VOP_READDIR() reads less |
36c3043b KM |
1244 | * than requested, but this may not apply to all filesystems. For |
1245 | * example, client NFS does not { although it is never remote mounted | |
1246 | * anyhow } | |
2c5b44a2 | 1247 | * The alternate call nqnfsrv_readdirlook() does lookups as well. |
971b93e3 | 1248 | * PS: The NFS protocol spec. does not clarify what the "count" byte |
36c3043b KM |
1249 | * argument is a count of.. just name strings and file id's or the |
1250 | * entire reply rpc or ... | |
1251 | * I tried just file name and id sizes and it confused the Sun client, | |
1252 | * so I am using the full rpc size now. The "paranoia.." comment refers | |
1253 | * to including the status longwords that are not a part of the dir. | |
1254 | * "entry" structures, but are in the rpc. | |
971b93e3 | 1255 | */ |
2c5b44a2 KM |
1256 | struct flrep { |
1257 | u_long fl_cachable; | |
1258 | u_long fl_duration; | |
1259 | u_quad_t fl_frev; | |
1260 | nfsv2fh_t fl_nfh; | |
1261 | struct nfsv2_fattr fl_fattr; | |
1262 | }; | |
1263 | ||
1264 | nfsrv_readdir(nfsd, mrep, md, dpos, cred, nam, mrq) | |
1265 | struct nfsd *nfsd; | |
971b93e3 KM |
1266 | struct mbuf *mrep, *md; |
1267 | caddr_t dpos; | |
1268 | struct ucred *cred; | |
2c5b44a2 | 1269 | struct mbuf *nam, **mrq; |
971b93e3 | 1270 | { |
9342689a JH |
1271 | USES_VOP_READDIR; |
1272 | USES_VOP_UNLOCK; | |
971b93e3 KM |
1273 | register char *bp, *be; |
1274 | register struct mbuf *mp; | |
8d0670ad | 1275 | register struct dirent *dp; |
0bd503ad | 1276 | register caddr_t cp; |
236c2c19 | 1277 | register u_long *tl; |
0bd503ad KM |
1278 | register long t1; |
1279 | caddr_t bpos; | |
2c5b44a2 KM |
1280 | struct mbuf *mb, *mb2, *mreq, *mp2; |
1281 | char *cpos, *cend, *cp2, *rbuf; | |
971b93e3 | 1282 | struct vnode *vp; |
971b93e3 KM |
1283 | nfsv2fh_t nfh; |
1284 | fhandle_t *fhp; | |
1285 | struct uio io; | |
1286 | struct iovec iv; | |
2c5b44a2 KM |
1287 | struct vattr va; |
1288 | int len, nlen, rem, xfer, tsiz, i, error = 0; | |
1289 | int siz, cnt, fullsiz, eofflag, rdonly, cache; | |
1290 | u_quad_t frev; | |
971b93e3 | 1291 | u_long on; |
971b93e3 KM |
1292 | off_t off, toff; |
1293 | ||
1294 | fhp = &nfh.fh_generic; | |
1295 | nfsm_srvmtofh(fhp); | |
2c5b44a2 | 1296 | nfsm_dissect(tl, u_long *, 2*NFSX_UNSIGNED); |
236c2c19 KM |
1297 | toff = fxdr_unsigned(off_t, *tl++); |
1298 | off = (toff & ~(NFS_DIRBLKSIZ-1)); | |
1299 | on = (toff & (NFS_DIRBLKSIZ-1)); | |
1300 | cnt = fxdr_unsigned(int, *tl); | |
1301 | siz = ((cnt+NFS_DIRBLKSIZ-1) & ~(NFS_DIRBLKSIZ-1)); | |
f0f1cbaa KM |
1302 | if (cnt > NFS_MAXREADDIR) |
1303 | siz = NFS_MAXREADDIR; | |
971b93e3 | 1304 | fullsiz = siz; |
2c5b44a2 | 1305 | if (error = nfsrv_fhtovp(fhp, TRUE, &vp, cred, nfsd->nd_slp, nam, &rdonly)) |
971b93e3 | 1306 | nfsm_reply(0); |
2c5b44a2 KM |
1307 | nqsrv_getl(vp, NQL_READ); |
1308 | if (error = nfsrv_access(vp, VEXEC, cred, rdonly, nfsd->nd_procp)) { | |
971b93e3 KM |
1309 | vput(vp); |
1310 | nfsm_reply(0); | |
1311 | } | |
1312 | VOP_UNLOCK(vp); | |
1313 | MALLOC(rbuf, caddr_t, siz, M_TEMP, M_WAITOK); | |
1314 | again: | |
1315 | iv.iov_base = rbuf; | |
1316 | iv.iov_len = fullsiz; | |
1317 | io.uio_iov = &iv; | |
1318 | io.uio_iovcnt = 1; | |
1319 | io.uio_offset = off; | |
1320 | io.uio_resid = fullsiz; | |
1321 | io.uio_segflg = UIO_SYSSPACE; | |
1322 | io.uio_rw = UIO_READ; | |
236c2c19 | 1323 | io.uio_procp = (struct proc *)0; |
e49b1a6c | 1324 | error = VOP_READDIR(vp, &io, cred, &eofflag); |
e9843ca3 | 1325 | off = io.uio_offset; |
971b93e3 KM |
1326 | if (error) { |
1327 | vrele(vp); | |
1328 | free((caddr_t)rbuf, M_TEMP); | |
1329 | nfsm_reply(0); | |
1330 | } | |
1331 | if (io.uio_resid) { | |
1332 | siz -= io.uio_resid; | |
1333 | ||
1334 | /* | |
1335 | * If nothing read, return eof | |
1336 | * rpc reply | |
1337 | */ | |
1338 | if (siz == 0) { | |
1339 | vrele(vp); | |
1340 | nfsm_reply(2*NFSX_UNSIGNED); | |
236c2c19 KM |
1341 | nfsm_build(tl, u_long *, 2*NFSX_UNSIGNED); |
1342 | *tl++ = nfs_false; | |
1343 | *tl = nfs_true; | |
971b93e3 KM |
1344 | FREE((caddr_t)rbuf, M_TEMP); |
1345 | return (0); | |
1346 | } | |
1347 | } | |
732aefe9 | 1348 | |
971b93e3 KM |
1349 | /* |
1350 | * Check for degenerate cases of nothing useful read. | |
732aefe9 | 1351 | * If so go try again |
971b93e3 | 1352 | */ |
732aefe9 KM |
1353 | cpos = rbuf + on; |
1354 | cend = rbuf + siz; | |
8d0670ad KM |
1355 | dp = (struct dirent *)cpos; |
1356 | while (cpos < cend && dp->d_fileno == 0) { | |
732aefe9 | 1357 | cpos += dp->d_reclen; |
8d0670ad | 1358 | dp = (struct dirent *)cpos; |
732aefe9 KM |
1359 | } |
1360 | if (cpos >= cend) { | |
971b93e3 KM |
1361 | toff = off; |
1362 | siz = fullsiz; | |
1363 | on = 0; | |
1364 | goto again; | |
1365 | } | |
732aefe9 KM |
1366 | |
1367 | cpos = rbuf + on; | |
1368 | cend = rbuf + siz; | |
8d0670ad | 1369 | dp = (struct dirent *)cpos; |
2c5b44a2 KM |
1370 | len = 3*NFSX_UNSIGNED; /* paranoia, probably can be 0 */ |
1371 | nfsm_reply(siz); | |
1372 | mp = mp2 = mb; | |
1373 | bp = bpos; | |
1374 | be = bp + M_TRAILINGSPACE(mp); | |
1375 | ||
1376 | /* Loop through the records and build reply */ | |
1377 | while (cpos < cend) { | |
8d0670ad | 1378 | if (dp->d_fileno != 0) { |
2c5b44a2 KM |
1379 | nlen = dp->d_namlen; |
1380 | rem = nfsm_rndup(nlen)-nlen; | |
1381 | len += (4*NFSX_UNSIGNED + nlen + rem); | |
1382 | if (len > cnt) { | |
1383 | eofflag = 0; | |
1384 | break; | |
1385 | } | |
8d0670ad KM |
1386 | /* |
1387 | * Build the directory record xdr from | |
1388 | * the dirent entry. | |
1389 | */ | |
2c5b44a2 KM |
1390 | nfsm_clget; |
1391 | *tl = nfs_true; | |
1392 | bp += NFSX_UNSIGNED; | |
1393 | nfsm_clget; | |
8d0670ad | 1394 | *tl = txdr_unsigned(dp->d_fileno); |
2c5b44a2 KM |
1395 | bp += NFSX_UNSIGNED; |
1396 | nfsm_clget; | |
1397 | *tl = txdr_unsigned(nlen); | |
1398 | bp += NFSX_UNSIGNED; | |
1399 | ||
1400 | /* And loop around copying the name */ | |
1401 | xfer = nlen; | |
1402 | cp = dp->d_name; | |
1403 | while (xfer > 0) { | |
1404 | nfsm_clget; | |
1405 | if ((bp+xfer) > be) | |
1406 | tsiz = be-bp; | |
1407 | else | |
1408 | tsiz = xfer; | |
1409 | bcopy(cp, bp, tsiz); | |
1410 | bp += tsiz; | |
1411 | xfer -= tsiz; | |
1412 | if (xfer > 0) | |
1413 | cp += tsiz; | |
1414 | } | |
1415 | /* And null pad to a long boundary */ | |
1416 | for (i = 0; i < rem; i++) | |
1417 | *bp++ = '\0'; | |
1418 | nfsm_clget; | |
1419 | ||
1420 | /* Finish off the record */ | |
1421 | toff += dp->d_reclen; | |
1422 | *tl = txdr_unsigned(toff); | |
1423 | bp += NFSX_UNSIGNED; | |
1424 | } else | |
1425 | toff += dp->d_reclen; | |
1426 | cpos += dp->d_reclen; | |
8d0670ad | 1427 | dp = (struct dirent *)cpos; |
2c5b44a2 | 1428 | } |
971b93e3 | 1429 | vrele(vp); |
2c5b44a2 KM |
1430 | nfsm_clget; |
1431 | *tl = nfs_false; | |
1432 | bp += NFSX_UNSIGNED; | |
1433 | nfsm_clget; | |
1434 | if (eofflag) | |
1435 | *tl = nfs_true; | |
1436 | else | |
1437 | *tl = nfs_false; | |
1438 | bp += NFSX_UNSIGNED; | |
1439 | if (mp != mb) { | |
1440 | if (bp < be) | |
1441 | mp->m_len = bp - mtod(mp, caddr_t); | |
1442 | } else | |
1443 | mp->m_len += bp - bpos; | |
1444 | FREE(rbuf, M_TEMP); | |
1445 | nfsm_srvdone; | |
1446 | } | |
1447 | ||
1448 | nqnfsrv_readdirlook(nfsd, mrep, md, dpos, cred, nam, mrq) | |
1449 | struct nfsd *nfsd; | |
1450 | struct mbuf *mrep, *md; | |
1451 | caddr_t dpos; | |
1452 | struct ucred *cred; | |
1453 | struct mbuf *nam, **mrq; | |
1454 | { | |
9342689a JH |
1455 | USES_VOP_GETATTR; |
1456 | USES_VOP_READDIR; | |
1457 | USES_VOP_UNLOCK; | |
2c5b44a2 KM |
1458 | register char *bp, *be; |
1459 | register struct mbuf *mp; | |
8d0670ad | 1460 | register struct dirent *dp; |
2c5b44a2 KM |
1461 | register caddr_t cp; |
1462 | register u_long *tl; | |
1463 | register long t1; | |
1464 | caddr_t bpos; | |
1465 | struct mbuf *mb, *mb2, *mreq, *mp2; | |
1466 | char *cpos, *cend, *cp2, *rbuf; | |
1467 | struct vnode *vp, *nvp; | |
1468 | struct flrep fl; | |
1469 | struct ufid *ufp = (struct ufid *)&fl.fl_nfh.fh_generic.fh_fid; | |
1470 | struct mount *mntp; | |
1471 | nfsv2fh_t nfh; | |
1472 | fhandle_t *fhp; | |
1473 | struct uio io; | |
1474 | struct iovec iv; | |
1475 | struct vattr va, *vap = &va; | |
1476 | struct nfsv2_fattr *fp; | |
1477 | int len, nlen, rem, xfer, tsiz, i, error = 0, duration2, cache2; | |
1478 | int siz, cnt, fullsiz, eofflag, rdonly, cache; | |
1479 | u_quad_t frev, frev2; | |
1480 | u_long on; | |
1481 | off_t off, toff; | |
1482 | ||
1483 | fhp = &nfh.fh_generic; | |
1484 | nfsm_srvmtofh(fhp); | |
1485 | nfsm_dissect(tl, u_long *, 3*NFSX_UNSIGNED); | |
1486 | toff = fxdr_unsigned(off_t, *tl++); | |
1487 | off = (toff & ~(NFS_DIRBLKSIZ-1)); | |
1488 | on = (toff & (NFS_DIRBLKSIZ-1)); | |
1489 | cnt = fxdr_unsigned(int, *tl++); | |
1490 | duration2 = fxdr_unsigned(int, *tl); | |
1491 | siz = ((cnt+NFS_DIRBLKSIZ-1) & ~(NFS_DIRBLKSIZ-1)); | |
1492 | if (cnt > NFS_MAXREADDIR) | |
1493 | siz = NFS_MAXREADDIR; | |
1494 | fullsiz = siz; | |
1495 | if (error = nfsrv_fhtovp(fhp, TRUE, &vp, cred, nfsd->nd_slp, nam, &rdonly)) | |
1496 | nfsm_reply(0); | |
1497 | nqsrv_getl(vp, NQL_READ); | |
1498 | if (error = nfsrv_access(vp, VEXEC, cred, rdonly, nfsd->nd_procp)) { | |
1499 | vput(vp); | |
1500 | nfsm_reply(0); | |
1501 | } | |
1502 | VOP_UNLOCK(vp); | |
1503 | MALLOC(rbuf, caddr_t, siz, M_TEMP, M_WAITOK); | |
1504 | again: | |
1505 | iv.iov_base = rbuf; | |
1506 | iv.iov_len = fullsiz; | |
1507 | io.uio_iov = &iv; | |
1508 | io.uio_iovcnt = 1; | |
1509 | io.uio_offset = off; | |
1510 | io.uio_resid = fullsiz; | |
1511 | io.uio_segflg = UIO_SYSSPACE; | |
1512 | io.uio_rw = UIO_READ; | |
1513 | io.uio_procp = (struct proc *)0; | |
1514 | error = VOP_READDIR(vp, &io, cred, &eofflag); | |
1515 | off = io.uio_offset; | |
1516 | if (error) { | |
1517 | vrele(vp); | |
1518 | free((caddr_t)rbuf, M_TEMP); | |
1519 | nfsm_reply(0); | |
1520 | } | |
1521 | if (io.uio_resid) { | |
1522 | siz -= io.uio_resid; | |
1523 | ||
1524 | /* | |
1525 | * If nothing read, return eof | |
1526 | * rpc reply | |
1527 | */ | |
1528 | if (siz == 0) { | |
1529 | vrele(vp); | |
1530 | nfsm_reply(2*NFSX_UNSIGNED); | |
1531 | nfsm_build(tl, u_long *, 2*NFSX_UNSIGNED); | |
1532 | *tl++ = nfs_false; | |
1533 | *tl = nfs_true; | |
1534 | FREE((caddr_t)rbuf, M_TEMP); | |
1535 | return (0); | |
1536 | } | |
1537 | } | |
1538 | ||
1539 | /* | |
1540 | * Check for degenerate cases of nothing useful read. | |
1541 | * If so go try again | |
1542 | */ | |
1543 | cpos = rbuf + on; | |
1544 | cend = rbuf + siz; | |
8d0670ad KM |
1545 | dp = (struct dirent *)cpos; |
1546 | while (cpos < cend && dp->d_fileno == 0) { | |
2c5b44a2 | 1547 | cpos += dp->d_reclen; |
8d0670ad | 1548 | dp = (struct dirent *)cpos; |
2c5b44a2 KM |
1549 | } |
1550 | if (cpos >= cend) { | |
1551 | toff = off; | |
1552 | siz = fullsiz; | |
1553 | on = 0; | |
1554 | goto again; | |
1555 | } | |
1556 | ||
1557 | cpos = rbuf + on; | |
1558 | cend = rbuf + siz; | |
8d0670ad | 1559 | dp = (struct dirent *)cpos; |
36c3043b | 1560 | len = 3*NFSX_UNSIGNED; /* paranoia, probably can be 0 */ |
971b93e3 | 1561 | nfsm_reply(siz); |
2c5b44a2 KM |
1562 | mp = mp2 = mb; |
1563 | bp = bpos; | |
1564 | be = bp + M_TRAILINGSPACE(mp); | |
1565 | mntp = vp->v_mount; | |
971b93e3 KM |
1566 | |
1567 | /* Loop through the records and build reply */ | |
1568 | while (cpos < cend) { | |
8d0670ad | 1569 | if (dp->d_fileno != 0) { |
971b93e3 KM |
1570 | nlen = dp->d_namlen; |
1571 | rem = nfsm_rndup(nlen)-nlen; | |
36c3043b | 1572 | |
971b93e3 | 1573 | /* |
2c5b44a2 KM |
1574 | * For readdir_and_lookup get the vnode using |
1575 | * the file number. | |
971b93e3 | 1576 | */ |
2c5b44a2 KM |
1577 | bzero((caddr_t)&fl.fl_nfh, sizeof (nfsv2fh_t)); |
1578 | ufp->ufid_len = sizeof (struct ufid); | |
8d0670ad | 1579 | ufp->ufid_ino = dp->d_fileno; |
2c5b44a2 KM |
1580 | fl.fl_nfh.fh_generic.fh_fsid = mntp->mnt_stat.f_fsid; |
1581 | if (VFS_FHTOVP(mntp, (struct fid *)ufp, 1, &nvp)) | |
1582 | goto invalid; | |
1583 | (void) nqsrv_getlease(nvp, &duration2, NQL_READ, nfsd, | |
1584 | nam, &cache2, &frev2, cred); | |
1585 | fl.fl_duration = txdr_unsigned(duration2); | |
1586 | fl.fl_cachable = txdr_unsigned(cache2); | |
1587 | txdr_hyper(&frev2, &fl.fl_frev); | |
1588 | if (VOP_GETATTR(nvp, vap, cred, nfsd->nd_procp)) { | |
1589 | vput(nvp); | |
1590 | goto invalid; | |
1591 | } | |
1592 | vput(nvp); | |
1593 | fp = &fl.fl_fattr; | |
1594 | nfsm_srvfillattr; | |
1595 | len += (4*NFSX_UNSIGNED + nlen + rem + NFSX_FH | |
1596 | + NFSX_FATTR); | |
f0f1cbaa KM |
1597 | if (len > cnt) { |
1598 | eofflag = 0; | |
971b93e3 | 1599 | break; |
f0f1cbaa | 1600 | } |
8d0670ad KM |
1601 | /* |
1602 | * Build the directory record xdr from | |
1603 | * the dirent entry. | |
1604 | */ | |
971b93e3 | 1605 | nfsm_clget; |
236c2c19 | 1606 | *tl = nfs_true; |
971b93e3 | 1607 | bp += NFSX_UNSIGNED; |
2c5b44a2 KM |
1608 | |
1609 | /* | |
1610 | * For readdir_and_lookup copy the stuff out. | |
1611 | */ | |
1612 | xfer = sizeof (struct flrep); | |
1613 | cp = (caddr_t)&fl; | |
1614 | while (xfer > 0) { | |
1615 | nfsm_clget; | |
1616 | if ((bp+xfer) > be) | |
1617 | tsiz = be-bp; | |
1618 | else | |
1619 | tsiz = xfer; | |
1620 | bcopy(cp, bp, tsiz); | |
1621 | bp += tsiz; | |
1622 | xfer -= tsiz; | |
1623 | if (xfer > 0) | |
1624 | cp += tsiz; | |
1625 | } | |
971b93e3 | 1626 | nfsm_clget; |
8d0670ad | 1627 | *tl = txdr_unsigned(dp->d_fileno); |
971b93e3 KM |
1628 | bp += NFSX_UNSIGNED; |
1629 | nfsm_clget; | |
236c2c19 | 1630 | *tl = txdr_unsigned(nlen); |
971b93e3 | 1631 | bp += NFSX_UNSIGNED; |
36c3043b | 1632 | |
2c5b44a2 | 1633 | /* And loop around copying the name */ |
971b93e3 KM |
1634 | xfer = nlen; |
1635 | cp = dp->d_name; | |
1636 | while (xfer > 0) { | |
1637 | nfsm_clget; | |
1638 | if ((bp+xfer) > be) | |
1639 | tsiz = be-bp; | |
1640 | else | |
1641 | tsiz = xfer; | |
1642 | bcopy(cp, bp, tsiz); | |
1643 | bp += tsiz; | |
1644 | xfer -= tsiz; | |
1645 | if (xfer > 0) | |
1646 | cp += tsiz; | |
1647 | } | |
1648 | /* And null pad to a long boundary */ | |
1649 | for (i = 0; i < rem; i++) | |
1650 | *bp++ = '\0'; | |
1651 | nfsm_clget; | |
36c3043b | 1652 | |
971b93e3 KM |
1653 | /* Finish off the record */ |
1654 | toff += dp->d_reclen; | |
236c2c19 | 1655 | *tl = txdr_unsigned(toff); |
971b93e3 KM |
1656 | bp += NFSX_UNSIGNED; |
1657 | } else | |
2c5b44a2 | 1658 | invalid: |
971b93e3 KM |
1659 | toff += dp->d_reclen; |
1660 | cpos += dp->d_reclen; | |
8d0670ad | 1661 | dp = (struct dirent *)cpos; |
971b93e3 | 1662 | } |
2c5b44a2 | 1663 | vrele(vp); |
971b93e3 | 1664 | nfsm_clget; |
236c2c19 | 1665 | *tl = nfs_false; |
971b93e3 KM |
1666 | bp += NFSX_UNSIGNED; |
1667 | nfsm_clget; | |
e49b1a6c | 1668 | if (eofflag) |
236c2c19 | 1669 | *tl = nfs_true; |
e49b1a6c | 1670 | else |
236c2c19 | 1671 | *tl = nfs_false; |
971b93e3 | 1672 | bp += NFSX_UNSIGNED; |
2c5b44a2 KM |
1673 | if (mp != mb) { |
1674 | if (bp < be) | |
1675 | mp->m_len = bp - mtod(mp, caddr_t); | |
1676 | } else | |
1677 | mp->m_len += bp - bpos; | |
971b93e3 KM |
1678 | FREE(rbuf, M_TEMP); |
1679 | nfsm_srvdone; | |
1680 | } | |
1681 | ||
1682 | /* | |
1683 | * nfs statfs service | |
1684 | */ | |
2c5b44a2 KM |
1685 | nfsrv_statfs(nfsd, mrep, md, dpos, cred, nam, mrq) |
1686 | struct nfsd *nfsd; | |
971b93e3 KM |
1687 | struct mbuf *mrep, *md; |
1688 | caddr_t dpos; | |
1689 | struct ucred *cred; | |
2c5b44a2 | 1690 | struct mbuf *nam, **mrq; |
971b93e3 KM |
1691 | { |
1692 | register struct statfs *sf; | |
9238aa59 | 1693 | register struct nfsv2_statfs *sfp; |
236c2c19 | 1694 | register u_long *tl; |
0bd503ad KM |
1695 | register long t1; |
1696 | caddr_t bpos; | |
2c5b44a2 | 1697 | int error = 0, rdonly, cache; |
0bd503ad | 1698 | char *cp2; |
e8540f59 | 1699 | struct mbuf *mb, *mb2, *mreq; |
971b93e3 KM |
1700 | struct vnode *vp; |
1701 | nfsv2fh_t nfh; | |
1702 | fhandle_t *fhp; | |
1703 | struct statfs statfs; | |
2c5b44a2 | 1704 | u_quad_t frev; |
971b93e3 KM |
1705 | |
1706 | fhp = &nfh.fh_generic; | |
1707 | nfsm_srvmtofh(fhp); | |
2c5b44a2 | 1708 | if (error = nfsrv_fhtovp(fhp, TRUE, &vp, cred, nfsd->nd_slp, nam, &rdonly)) |
971b93e3 KM |
1709 | nfsm_reply(0); |
1710 | sf = &statfs; | |
2c5b44a2 | 1711 | error = VFS_STATFS(vp->v_mount, sf, nfsd->nd_procp); |
971b93e3 KM |
1712 | vput(vp); |
1713 | nfsm_reply(NFSX_STATFS); | |
9238aa59 | 1714 | nfsm_build(sfp, struct nfsv2_statfs *, NFSX_STATFS); |
b28c3bcc | 1715 | sfp->sf_tsize = txdr_unsigned(NFS_MAXDGRAMDATA); |
a22e809c | 1716 | sfp->sf_bsize = txdr_unsigned(sf->f_bsize); |
9238aa59 RM |
1717 | sfp->sf_blocks = txdr_unsigned(sf->f_blocks); |
1718 | sfp->sf_bfree = txdr_unsigned(sf->f_bfree); | |
1719 | sfp->sf_bavail = txdr_unsigned(sf->f_bavail); | |
971b93e3 KM |
1720 | nfsm_srvdone; |
1721 | } | |
1722 | ||
1723 | /* | |
1724 | * Null operation, used by clients to ping server | |
1725 | */ | |
0bd503ad | 1726 | /* ARGSUSED */ |
2c5b44a2 KM |
1727 | nfsrv_null(nfsd, mrep, md, dpos, cred, nam, mrq) |
1728 | struct nfsd *nfsd; | |
971b93e3 KM |
1729 | struct mbuf *mrep, *md; |
1730 | caddr_t dpos; | |
1731 | struct ucred *cred; | |
2c5b44a2 | 1732 | struct mbuf *nam, **mrq; |
971b93e3 | 1733 | { |
0bd503ad | 1734 | caddr_t bpos; |
2c5b44a2 | 1735 | int error = VNOVAL, cache; |
e8540f59 | 1736 | struct mbuf *mb, *mreq; |
2c5b44a2 | 1737 | u_quad_t frev; |
971b93e3 | 1738 | |
971b93e3 | 1739 | nfsm_reply(0); |
0bd503ad | 1740 | return (error); |
971b93e3 KM |
1741 | } |
1742 | ||
1743 | /* | |
1744 | * No operation, used for obsolete procedures | |
1745 | */ | |
0bd503ad | 1746 | /* ARGSUSED */ |
2c5b44a2 KM |
1747 | nfsrv_noop(nfsd, mrep, md, dpos, cred, nam, mrq) |
1748 | struct nfsd *nfsd; | |
971b93e3 KM |
1749 | struct mbuf *mrep, *md; |
1750 | caddr_t dpos; | |
1751 | struct ucred *cred; | |
2c5b44a2 | 1752 | struct mbuf *nam, **mrq; |
971b93e3 | 1753 | { |
0bd503ad | 1754 | caddr_t bpos; |
2c5b44a2 | 1755 | int error, cache; |
e8540f59 | 1756 | struct mbuf *mb, *mreq; |
2c5b44a2 | 1757 | u_quad_t frev; |
971b93e3 | 1758 | |
2c5b44a2 KM |
1759 | if (nfsd->nd_repstat) |
1760 | error = nfsd->nd_repstat; | |
1761 | else | |
1762 | error = EPROCUNAVAIL; | |
971b93e3 | 1763 | nfsm_reply(0); |
0bd503ad | 1764 | return (error); |
971b93e3 | 1765 | } |
36c3043b | 1766 | |
24ed1a73 KM |
1767 | /* |
1768 | * Perform access checking for vnodes obtained from file handles that would | |
1769 | * refer to files already opened by a Unix client. You cannot just use | |
1770 | * vn_writechk() and VOP_ACCESS() for two reasons. | |
2c5b44a2 | 1771 | * 1 - You must check for exported rdonly as well as MNT_RDONLY for the write case |
24ed1a73 KM |
1772 | * 2 - The owner is to be given access irrespective of mode bits so that |
1773 | * processes that chmod after opening a file don't break. I don't like | |
1774 | * this because it opens a security hole, but since the nfs server opens | |
1775 | * a security hole the size of a barn door anyhow, what the heck. | |
1776 | */ | |
2c5b44a2 | 1777 | nfsrv_access(vp, flags, cred, rdonly, p) |
24ed1a73 KM |
1778 | register struct vnode *vp; |
1779 | int flags; | |
1780 | register struct ucred *cred; | |
2c5b44a2 | 1781 | int rdonly; |
236c2c19 | 1782 | struct proc *p; |
24ed1a73 | 1783 | { |
9342689a JH |
1784 | USES_VOP_ACCESS; |
1785 | USES_VOP_GETATTR; | |
24ed1a73 KM |
1786 | struct vattr vattr; |
1787 | int error; | |
1788 | if (flags & VWRITE) { | |
2c5b44a2 | 1789 | /* Just vn_writechk() changed to check rdonly */ |
24ed1a73 KM |
1790 | /* |
1791 | * Disallow write attempts on read-only file systems; | |
1792 | * unless the file is a socket or a block or character | |
1793 | * device resident on the file system. | |
1794 | */ | |
2c5b44a2 | 1795 | if (rdonly || (vp->v_mount->mnt_flag & MNT_RDONLY)) { |
fef23149 KM |
1796 | switch (vp->v_type) { |
1797 | case VREG: case VDIR: case VLNK: | |
24ed1a73 | 1798 | return (EROFS); |
fef23149 KM |
1799 | } |
1800 | } | |
24ed1a73 KM |
1801 | /* |
1802 | * If there's shared text associated with | |
1803 | * the inode, try to free it up once. If | |
1804 | * we fail, we can't allow writing. | |
1805 | */ | |
8986c97c | 1806 | if ((vp->v_flag & VTEXT) && !vnode_pager_uncache(vp)) |
24ed1a73 | 1807 | return (ETXTBSY); |
24ed1a73 | 1808 | } |
236c2c19 | 1809 | if (error = VOP_GETATTR(vp, &vattr, cred, p)) |
fef23149 | 1810 | return (error); |
236c2c19 | 1811 | if ((error = VOP_ACCESS(vp, flags, cred, p)) && |
fef23149 KM |
1812 | cred->cr_uid != vattr.va_uid) |
1813 | return (error); | |
1814 | return (0); | |
24ed1a73 | 1815 | } |