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 | * |
2c5b44a2 | 10 | * @(#)nfs_serv.c 7.43 (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 | 43 | #include "nfsv2.h" |
2c5b44a2 | 44 | #include "rpcv2.h" |
971b93e3 KM |
45 | #include "nfs.h" |
46 | #include "xdr_subs.h" | |
47 | #include "nfsm_subs.h" | |
2c5b44a2 | 48 | #include "nqnfs.h" |
971b93e3 KM |
49 | |
50 | /* Defs */ | |
36c3043b KM |
51 | #define TRUE 1 |
52 | #define FALSE 0 | |
971b93e3 KM |
53 | |
54 | /* Global vars */ | |
55 | extern u_long nfs_procids[NFS_NPROCS]; | |
56 | extern u_long nfs_xdrneg1; | |
57 | extern u_long nfs_false, nfs_true; | |
2c5b44a2 | 58 | nfstype nfs_type[9] = { NFNON, NFREG, NFDIR, NFBLK, NFCHR, NFLNK, NFNON, |
d4e5799e | 59 | NFCHR, NFNON }; |
971b93e3 KM |
60 | |
61 | /* | |
62 | * nfs getattr service | |
63 | */ | |
2c5b44a2 KM |
64 | nfsrv_getattr(nfsd, mrep, md, dpos, cred, nam, mrq) |
65 | struct nfsd *nfsd; | |
971b93e3 KM |
66 | struct mbuf *mrep, *md; |
67 | caddr_t dpos; | |
68 | struct ucred *cred; | |
2c5b44a2 | 69 | struct mbuf *nam, **mrq; |
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; | |
2c5b44a2 | 80 | int error = 0, rdonly, cache; |
0bd503ad | 81 | char *cp2; |
e8540f59 | 82 | struct mbuf *mb, *mb2, *mreq; |
2c5b44a2 | 83 | u_quad_t frev; |
971b93e3 KM |
84 | |
85 | fhp = &nfh.fh_generic; | |
86 | nfsm_srvmtofh(fhp); | |
2c5b44a2 | 87 | if (error = nfsrv_fhtovp(fhp, TRUE, &vp, cred, nfsd->nd_slp, nam, &rdonly)) |
971b93e3 | 88 | nfsm_reply(0); |
2c5b44a2 KM |
89 | nqsrv_getl(vp, NQL_READ); |
90 | error = VOP_GETATTR(vp, vap, cred, nfsd->nd_procp); | |
971b93e3 KM |
91 | vput(vp); |
92 | nfsm_reply(NFSX_FATTR); | |
9238aa59 | 93 | nfsm_build(fp, struct nfsv2_fattr *, NFSX_FATTR); |
e8540f59 | 94 | nfsm_srvfillattr; |
971b93e3 KM |
95 | nfsm_srvdone; |
96 | } | |
97 | ||
98 | /* | |
99 | * nfs setattr service | |
100 | */ | |
2c5b44a2 KM |
101 | nfsrv_setattr(nfsd, mrep, md, dpos, cred, nam, mrq) |
102 | struct nfsd *nfsd; | |
971b93e3 KM |
103 | struct mbuf *mrep, *md; |
104 | caddr_t dpos; | |
105 | struct ucred *cred; | |
2c5b44a2 | 106 | struct mbuf *nam, **mrq; |
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; | |
2c5b44a2 | 118 | int error = 0, rdonly, cache, duration2, cache2; |
0bd503ad | 119 | char *cp2; |
e8540f59 | 120 | struct mbuf *mb, *mb2, *mreq; |
2c5b44a2 | 121 | u_quad_t frev, frev2; |
971b93e3 KM |
122 | |
123 | fhp = &nfh.fh_generic; | |
124 | nfsm_srvmtofh(fhp); | |
2c5b44a2 KM |
125 | nfsm_dissect(sp, struct nfsv2_sattr *, NFSX_SATTR); |
126 | if (error = nfsrv_fhtovp(fhp, TRUE, &vp, cred, nfsd->nd_slp, nam, &rdonly)) | |
971b93e3 | 127 | nfsm_reply(0); |
2c5b44a2 KM |
128 | nqsrv_getl(vp, NQL_WRITE); |
129 | if (error = nfsrv_access(vp, VWRITE, cred, rdonly, nfsd->nd_procp)) | |
971b93e3 | 130 | goto out; |
3ee1461b | 131 | VATTR_NULL(vap); |
971b93e3 KM |
132 | /* |
133 | * Nah nah nah nah na nah | |
134 | * There is a bug in the Sun client that puts 0xffff in the mode | |
135 | * field of sattr when it should put in 0xffffffff. The u_short | |
136 | * doesn't sign extend. | |
137 | * --> check the low order 2 bytes for 0xffff | |
138 | */ | |
9238aa59 RM |
139 | if ((fxdr_unsigned(int, sp->sa_mode) & 0xffff) != 0xffff) |
140 | vap->va_mode = nfstov_mode(sp->sa_mode); | |
141 | if (sp->sa_uid != nfs_xdrneg1) | |
142 | vap->va_uid = fxdr_unsigned(uid_t, sp->sa_uid); | |
143 | if (sp->sa_gid != nfs_xdrneg1) | |
144 | vap->va_gid = fxdr_unsigned(gid_t, sp->sa_gid); | |
e8540f59 | 145 | if (sp->sa_size != nfs_xdrneg1) |
9238aa59 | 146 | vap->va_size = fxdr_unsigned(u_long, sp->sa_size); |
e8540f59 KM |
147 | /* |
148 | * The usec field of sa_atime is overloaded with the va_flags field | |
149 | * for 4.4BSD clients. Hopefully other clients always set both the | |
150 | * sec and usec fields to -1 when not setting the atime. | |
151 | */ | |
152 | if (sp->sa_atime.tv_sec != nfs_xdrneg1) { | |
153 | vap->va_atime.tv_sec = fxdr_unsigned(long, sp->sa_atime.tv_sec); | |
154 | vap->va_atime.tv_usec = 0; | |
36c3043b | 155 | } |
e8540f59 KM |
156 | if (sp->sa_atime.tv_usec != nfs_xdrneg1) |
157 | vap->va_flags = fxdr_unsigned(u_long, sp->sa_atime.tv_usec); | |
9238aa59 RM |
158 | if (sp->sa_mtime.tv_sec != nfs_xdrneg1) |
159 | fxdr_time(&sp->sa_mtime, &vap->va_mtime); | |
2c5b44a2 | 160 | if (error = VOP_SETATTR(vp, vap, cred, nfsd->nd_procp)) { |
971b93e3 KM |
161 | vput(vp); |
162 | nfsm_reply(0); | |
163 | } | |
2c5b44a2 | 164 | error = VOP_GETATTR(vp, vap, cred, nfsd->nd_procp); |
971b93e3 KM |
165 | out: |
166 | vput(vp); | |
2c5b44a2 | 167 | nfsm_reply(NFSX_FATTR + 2*NFSX_UNSIGNED); |
9238aa59 | 168 | nfsm_build(fp, struct nfsv2_fattr *, NFSX_FATTR); |
e8540f59 | 169 | nfsm_srvfillattr; |
2c5b44a2 KM |
170 | if (nfsd->nd_nqlflag != NQL_NOVAL) { |
171 | nfsm_build(tl, u_long *, 2*NFSX_UNSIGNED); | |
172 | txdr_hyper(&frev2, tl); | |
173 | } | |
971b93e3 KM |
174 | nfsm_srvdone; |
175 | } | |
176 | ||
177 | /* | |
178 | * nfs lookup rpc | |
179 | */ | |
2c5b44a2 KM |
180 | nfsrv_lookup(nfsd, mrep, md, dpos, cred, nam, mrq) |
181 | struct nfsd *nfsd; | |
971b93e3 KM |
182 | struct mbuf *mrep, *md; |
183 | caddr_t dpos; | |
184 | struct ucred *cred; | |
2c5b44a2 | 185 | struct mbuf *nam, **mrq; |
971b93e3 | 186 | { |
9238aa59 | 187 | register struct nfsv2_fattr *fp; |
74c40d5a | 188 | struct nameidata nd; |
971b93e3 KM |
189 | struct vnode *vp; |
190 | nfsv2fh_t nfh; | |
191 | fhandle_t *fhp; | |
0bd503ad | 192 | register caddr_t cp; |
236c2c19 | 193 | register u_long *tl; |
0bd503ad KM |
194 | register long t1; |
195 | caddr_t bpos; | |
2c5b44a2 | 196 | int error = 0, lflag = 0, rdonly, cache, duration2, cache2, len; |
0bd503ad | 197 | char *cp2; |
e8540f59 | 198 | struct mbuf *mb, *mb2, *mreq; |
971b93e3 | 199 | struct vattr va, *vap = &va; |
2c5b44a2 | 200 | u_quad_t frev, frev2; |
971b93e3 KM |
201 | |
202 | fhp = &nfh.fh_generic; | |
2c5b44a2 KM |
203 | if (nfsd->nd_nqlflag != NQL_NOVAL) { |
204 | nfsm_dissect(tl, u_long *, NFSX_UNSIGNED); | |
205 | if (*tl) { | |
206 | lflag = fxdr_unsigned(int, *tl); | |
207 | nfsm_dissect(tl, u_long *, NFSX_UNSIGNED); | |
208 | duration2 = fxdr_unsigned(int, *tl); | |
209 | } | |
210 | } | |
971b93e3 KM |
211 | nfsm_srvmtofh(fhp); |
212 | nfsm_srvstrsiz(len, NFS_MAXNAMLEN); | |
74c40d5a | 213 | nd.ni_cred = cred; |
2c5b44a2 KM |
214 | nd.ni_nameiop = LOOKUP | LOCKLEAF | SAVESTART; |
215 | if (error = nfs_namei(&nd, fhp, len, nfsd->nd_slp, nam, &md, &dpos, nfsd->nd_procp)) | |
971b93e3 | 216 | nfsm_reply(0); |
2c5b44a2 KM |
217 | nqsrv_getl(nd.ni_startdir, NQL_READ); |
218 | vrele(nd.ni_startdir); | |
74c40d5a | 219 | vp = nd.ni_vp; |
971b93e3 | 220 | bzero((caddr_t)fhp, sizeof(nfh)); |
54fb9dc2 | 221 | fhp->fh_fsid = vp->v_mount->mnt_stat.f_fsid; |
971b93e3 KM |
222 | if (error = VFS_VPTOFH(vp, &fhp->fh_fid)) { |
223 | vput(vp); | |
224 | nfsm_reply(0); | |
225 | } | |
2c5b44a2 KM |
226 | if (lflag) |
227 | (void) nqsrv_getlease(vp, &duration2, lflag, nfsd, | |
228 | nam, &cache2, &frev2, cred); | |
229 | error = VOP_GETATTR(vp, vap, cred, nfsd->nd_procp); | |
971b93e3 | 230 | vput(vp); |
2c5b44a2 KM |
231 | nfsm_reply(NFSX_FH + NFSX_FATTR + 5*NFSX_UNSIGNED); |
232 | if (nfsd->nd_nqlflag != NQL_NOVAL) { | |
233 | if (lflag) { | |
234 | nfsm_build(tl, u_long *, 5*NFSX_UNSIGNED); | |
235 | *tl++ = txdr_unsigned(lflag); | |
236 | *tl++ = txdr_unsigned(cache2); | |
237 | *tl++ = txdr_unsigned(duration2); | |
238 | txdr_hyper(&frev2, tl); | |
239 | } else { | |
240 | nfsm_build(tl, u_long *, NFSX_UNSIGNED); | |
241 | *tl = 0; | |
242 | } | |
243 | } | |
971b93e3 | 244 | nfsm_srvfhtom(fhp); |
9238aa59 | 245 | nfsm_build(fp, struct nfsv2_fattr *, NFSX_FATTR); |
e8540f59 | 246 | nfsm_srvfillattr; |
971b93e3 KM |
247 | nfsm_srvdone; |
248 | } | |
249 | ||
250 | /* | |
251 | * nfs readlink service | |
252 | */ | |
2c5b44a2 KM |
253 | nfsrv_readlink(nfsd, mrep, md, dpos, cred, nam, mrq) |
254 | struct nfsd *nfsd; | |
971b93e3 KM |
255 | struct mbuf *mrep, *md; |
256 | caddr_t dpos; | |
257 | struct ucred *cred; | |
2c5b44a2 | 258 | struct mbuf *nam, **mrq; |
971b93e3 | 259 | { |
f0f1cbaa | 260 | struct iovec iv[(NFS_MAXPATHLEN+MLEN-1)/MLEN]; |
971b93e3 KM |
261 | register struct iovec *ivp = iv; |
262 | register struct mbuf *mp; | |
236c2c19 | 263 | register u_long *tl; |
0bd503ad KM |
264 | register long t1; |
265 | caddr_t bpos; | |
2c5b44a2 | 266 | int error = 0, rdonly, cache, i, tlen, len; |
0bd503ad | 267 | char *cp2; |
e8540f59 | 268 | struct mbuf *mb, *mb2, *mp2, *mp3, *mreq; |
971b93e3 KM |
269 | struct vnode *vp; |
270 | nfsv2fh_t nfh; | |
271 | fhandle_t *fhp; | |
272 | struct uio io, *uiop = &io; | |
2c5b44a2 | 273 | u_quad_t frev; |
971b93e3 KM |
274 | |
275 | fhp = &nfh.fh_generic; | |
276 | nfsm_srvmtofh(fhp); | |
277 | len = 0; | |
278 | i = 0; | |
279 | while (len < NFS_MAXPATHLEN) { | |
280 | MGET(mp, M_WAIT, MT_DATA); | |
f0f1cbaa | 281 | MCLGET(mp, M_WAIT); |
971b93e3 KM |
282 | mp->m_len = NFSMSIZ(mp); |
283 | if (len == 0) | |
284 | mp3 = mp2 = mp; | |
f0f1cbaa | 285 | else { |
971b93e3 | 286 | mp2->m_next = mp; |
f0f1cbaa KM |
287 | mp2 = mp; |
288 | } | |
971b93e3 KM |
289 | if ((len+mp->m_len) > NFS_MAXPATHLEN) { |
290 | mp->m_len = NFS_MAXPATHLEN-len; | |
291 | len = NFS_MAXPATHLEN; | |
292 | } else | |
293 | len += mp->m_len; | |
294 | ivp->iov_base = mtod(mp, caddr_t); | |
295 | ivp->iov_len = mp->m_len; | |
296 | i++; | |
297 | ivp++; | |
298 | } | |
299 | uiop->uio_iov = iv; | |
300 | uiop->uio_iovcnt = i; | |
301 | uiop->uio_offset = 0; | |
302 | uiop->uio_resid = len; | |
303 | uiop->uio_rw = UIO_READ; | |
304 | uiop->uio_segflg = UIO_SYSSPACE; | |
236c2c19 | 305 | uiop->uio_procp = (struct proc *)0; |
2c5b44a2 | 306 | if (error = nfsrv_fhtovp(fhp, TRUE, &vp, cred, nfsd->nd_slp, nam, &rdonly)) { |
971b93e3 KM |
307 | m_freem(mp3); |
308 | nfsm_reply(0); | |
309 | } | |
310 | if (vp->v_type != VLNK) { | |
311 | error = EINVAL; | |
312 | goto out; | |
313 | } | |
2c5b44a2 | 314 | nqsrv_getl(vp, NQL_READ); |
971b93e3 KM |
315 | error = VOP_READLINK(vp, uiop, cred); |
316 | out: | |
317 | vput(vp); | |
318 | if (error) | |
319 | m_freem(mp3); | |
320 | nfsm_reply(NFSX_UNSIGNED); | |
321 | if (uiop->uio_resid > 0) { | |
322 | len -= uiop->uio_resid; | |
323 | tlen = nfsm_rndup(len); | |
324 | nfsm_adj(mp3, NFS_MAXPATHLEN-tlen, tlen-len); | |
325 | } | |
236c2c19 KM |
326 | nfsm_build(tl, u_long *, NFSX_UNSIGNED); |
327 | *tl = txdr_unsigned(len); | |
971b93e3 KM |
328 | mb->m_next = mp3; |
329 | nfsm_srvdone; | |
330 | } | |
331 | ||
332 | /* | |
333 | * nfs read service | |
334 | */ | |
2c5b44a2 KM |
335 | nfsrv_read(nfsd, mrep, md, dpos, cred, nam, mrq) |
336 | struct nfsd *nfsd; | |
971b93e3 KM |
337 | struct mbuf *mrep, *md; |
338 | caddr_t dpos; | |
339 | struct ucred *cred; | |
2c5b44a2 | 340 | struct mbuf *nam, **mrq; |
971b93e3 | 341 | { |
170bfd05 KM |
342 | register struct iovec *iv; |
343 | struct iovec *iv2; | |
f0f1cbaa | 344 | register struct mbuf *m; |
9238aa59 | 345 | register struct nfsv2_fattr *fp; |
236c2c19 | 346 | register u_long *tl; |
0bd503ad KM |
347 | register long t1; |
348 | caddr_t bpos; | |
2c5b44a2 | 349 | int error = 0, rdonly, cache, i, cnt, len, left, siz, tlen; |
0bd503ad | 350 | char *cp2; |
e8540f59 | 351 | struct mbuf *mb, *mb2, *mreq; |
2c5b44a2 | 352 | struct mbuf *m2; |
971b93e3 KM |
353 | struct vnode *vp; |
354 | nfsv2fh_t nfh; | |
355 | fhandle_t *fhp; | |
356 | struct uio io, *uiop = &io; | |
357 | struct vattr va, *vap = &va; | |
971b93e3 | 358 | off_t off; |
2c5b44a2 | 359 | u_quad_t frev; |
971b93e3 KM |
360 | |
361 | fhp = &nfh.fh_generic; | |
362 | nfsm_srvmtofh(fhp); | |
2c5b44a2 | 363 | nfsm_dissect(tl, u_long *, NFSX_UNSIGNED); |
236c2c19 | 364 | off = fxdr_unsigned(off_t, *tl); |
971b93e3 | 365 | nfsm_srvstrsiz(cnt, NFS_MAXDATA); |
2c5b44a2 | 366 | if (error = nfsrv_fhtovp(fhp, TRUE, &vp, cred, nfsd->nd_slp, nam, &rdonly)) |
971b93e3 | 367 | nfsm_reply(0); |
2c5b44a2 KM |
368 | nqsrv_getl(vp, NQL_READ); |
369 | if (error = nfsrv_access(vp, VREAD | VEXEC, cred, rdonly, nfsd->nd_procp)) { | |
971b93e3 KM |
370 | vput(vp); |
371 | nfsm_reply(0); | |
372 | } | |
2c5b44a2 | 373 | if (error = VOP_GETATTR(vp, vap, cred, nfsd->nd_procp)) { |
971b93e3 KM |
374 | vput(vp); |
375 | nfsm_reply(0); | |
376 | } | |
2c5b44a2 KM |
377 | if (off >= vap->va_size) |
378 | cnt = 0; | |
379 | else if ((off + cnt) > vap->va_size) | |
380 | cnt = nfsm_rndup(vap->va_size - off); | |
381 | nfsm_reply(NFSX_FATTR+NFSX_UNSIGNED+nfsm_rndup(cnt)); | |
9238aa59 | 382 | nfsm_build(fp, struct nfsv2_fattr *, NFSX_FATTR); |
2c5b44a2 KM |
383 | nfsm_build(tl, u_long *, NFSX_UNSIGNED); |
384 | len = left = cnt; | |
385 | if (cnt > 0) { | |
386 | /* | |
387 | * Generate the mbuf list with the uio_iov ref. to it. | |
388 | */ | |
389 | i = 0; | |
390 | m = m2 = mb; | |
391 | MALLOC(iv, struct iovec *, | |
392 | ((NFS_MAXDATA+MLEN-1)/MLEN) * sizeof (struct iovec), | |
393 | M_TEMP, M_WAITOK); | |
394 | iv2 = iv; | |
395 | while (left > 0) { | |
396 | siz = MIN(M_TRAILINGSPACE(m), left); | |
397 | if (siz > 0) { | |
398 | m->m_len += siz; | |
399 | iv->iov_base = bpos; | |
400 | iv->iov_len = siz; | |
401 | iv++; | |
402 | i++; | |
403 | left -= siz; | |
404 | } | |
405 | if (left > 0) { | |
406 | MGET(m, M_WAIT, MT_DATA); | |
407 | MCLGET(m, M_WAIT); | |
408 | m->m_len = 0; | |
409 | m2->m_next = m; | |
410 | m2 = m; | |
411 | bpos = mtod(m, caddr_t); | |
412 | } | |
413 | } | |
414 | uiop->uio_iov = iv2; | |
415 | uiop->uio_iovcnt = i; | |
416 | uiop->uio_offset = off; | |
417 | uiop->uio_resid = cnt; | |
418 | uiop->uio_rw = UIO_READ; | |
419 | uiop->uio_segflg = UIO_SYSSPACE; | |
420 | error = VOP_READ(vp, uiop, IO_NODELOCKED, cred); | |
421 | off = uiop->uio_offset; | |
422 | FREE((caddr_t)iv2, M_TEMP); | |
423 | if (error || (error = VOP_GETATTR(vp, vap, cred, nfsd->nd_procp))) { | |
424 | m_freem(mreq); | |
425 | vput(vp); | |
426 | nfsm_reply(0); | |
427 | } | |
428 | } else | |
429 | uiop->uio_resid = 0; | |
430 | vput(vp); | |
e8540f59 | 431 | nfsm_srvfillattr; |
25951042 | 432 | len -= uiop->uio_resid; |
2c5b44a2 KM |
433 | tlen = nfsm_rndup(len); |
434 | if (cnt != tlen || tlen != len) | |
435 | nfsm_adj(mb, cnt-tlen, tlen-len); | |
236c2c19 | 436 | *tl = txdr_unsigned(len); |
971b93e3 KM |
437 | nfsm_srvdone; |
438 | } | |
439 | ||
440 | /* | |
441 | * nfs write service | |
442 | */ | |
2c5b44a2 KM |
443 | nfsrv_write(nfsd, mrep, md, dpos, cred, nam, mrq) |
444 | struct nfsd *nfsd; | |
445 | struct mbuf *mrep, *md; | |
971b93e3 KM |
446 | caddr_t dpos; |
447 | struct ucred *cred; | |
2c5b44a2 | 448 | struct mbuf *nam, **mrq; |
971b93e3 KM |
449 | { |
450 | register struct iovec *ivp; | |
451 | register struct mbuf *mp; | |
9238aa59 | 452 | register struct nfsv2_fattr *fp; |
f0f1cbaa | 453 | struct iovec iv[NFS_MAXIOVEC]; |
971b93e3 KM |
454 | struct vattr va; |
455 | register struct vattr *vap = &va; | |
236c2c19 | 456 | register u_long *tl; |
0bd503ad KM |
457 | register long t1; |
458 | caddr_t bpos; | |
2c5b44a2 | 459 | int error = 0, rdonly, cache, siz, len, xfer; |
0bd503ad | 460 | char *cp2; |
e8540f59 | 461 | struct mbuf *mb, *mb2, *mreq; |
971b93e3 KM |
462 | struct vnode *vp; |
463 | nfsv2fh_t nfh; | |
464 | fhandle_t *fhp; | |
465 | struct uio io, *uiop = &io; | |
466 | off_t off; | |
2c5b44a2 | 467 | u_quad_t frev; |
971b93e3 KM |
468 | |
469 | fhp = &nfh.fh_generic; | |
470 | nfsm_srvmtofh(fhp); | |
2c5b44a2 | 471 | nfsm_dissect(tl, u_long *, 4*NFSX_UNSIGNED); |
236c2c19 KM |
472 | off = fxdr_unsigned(off_t, *++tl); |
473 | tl += 2; | |
474 | len = fxdr_unsigned(long, *tl); | |
971b93e3 KM |
475 | if (len > NFS_MAXDATA || len <= 0) { |
476 | error = EBADRPC; | |
477 | nfsm_reply(0); | |
478 | } | |
479 | if (dpos == (mtod(md, caddr_t)+md->m_len)) { | |
480 | mp = md->m_next; | |
481 | if (mp == NULL) { | |
482 | error = EBADRPC; | |
483 | nfsm_reply(0); | |
484 | } | |
485 | } else { | |
486 | mp = md; | |
487 | siz = dpos-mtod(mp, caddr_t); | |
488 | mp->m_len -= siz; | |
489 | NFSMADV(mp, siz); | |
490 | } | |
2c5b44a2 | 491 | if (error = nfsrv_fhtovp(fhp, TRUE, &vp, cred, nfsd->nd_slp, nam, &rdonly)) |
971b93e3 | 492 | nfsm_reply(0); |
2c5b44a2 KM |
493 | nqsrv_getl(vp, NQL_WRITE); |
494 | if (error = nfsrv_access(vp, VWRITE, cred, rdonly, nfsd->nd_procp)) { | |
971b93e3 KM |
495 | vput(vp); |
496 | nfsm_reply(0); | |
497 | } | |
498 | uiop->uio_resid = 0; | |
499 | uiop->uio_rw = UIO_WRITE; | |
500 | uiop->uio_segflg = UIO_SYSSPACE; | |
236c2c19 | 501 | uiop->uio_procp = (struct proc *)0; |
971b93e3 | 502 | /* |
f0f1cbaa | 503 | * Do up to NFS_MAXIOVEC mbufs of write each iteration of the |
971b93e3 KM |
504 | * loop until done. |
505 | */ | |
506 | while (len > 0 && uiop->uio_resid == 0) { | |
507 | ivp = iv; | |
508 | siz = 0; | |
509 | uiop->uio_iov = ivp; | |
510 | uiop->uio_iovcnt = 0; | |
511 | uiop->uio_offset = off; | |
f0f1cbaa | 512 | while (len > 0 && uiop->uio_iovcnt < NFS_MAXIOVEC && mp != NULL) { |
971b93e3 KM |
513 | ivp->iov_base = mtod(mp, caddr_t); |
514 | if (len < mp->m_len) | |
515 | ivp->iov_len = xfer = len; | |
516 | else | |
517 | ivp->iov_len = xfer = mp->m_len; | |
518 | #ifdef notdef | |
519 | /* Not Yet .. */ | |
520 | if (M_HASCL(mp) && (((u_long)ivp->iov_base) & CLOFSET) == 0) | |
521 | ivp->iov_op = NULL; /* what should it be ?? */ | |
522 | else | |
523 | ivp->iov_op = NULL; | |
524 | #endif | |
525 | uiop->uio_iovcnt++; | |
526 | ivp++; | |
527 | len -= xfer; | |
528 | siz += xfer; | |
529 | mp = mp->m_next; | |
530 | } | |
531 | if (len > 0 && mp == NULL) { | |
532 | error = EBADRPC; | |
533 | vput(vp); | |
534 | nfsm_reply(0); | |
535 | } | |
536 | uiop->uio_resid = siz; | |
e9843ca3 | 537 | if (error = VOP_WRITE(vp, uiop, IO_SYNC | IO_NODELOCKED, |
971b93e3 KM |
538 | cred)) { |
539 | vput(vp); | |
540 | nfsm_reply(0); | |
541 | } | |
e9843ca3 | 542 | off = uiop->uio_offset; |
971b93e3 | 543 | } |
2c5b44a2 | 544 | error = VOP_GETATTR(vp, vap, cred, nfsd->nd_procp); |
971b93e3 KM |
545 | vput(vp); |
546 | nfsm_reply(NFSX_FATTR); | |
9238aa59 | 547 | nfsm_build(fp, struct nfsv2_fattr *, NFSX_FATTR); |
e8540f59 | 548 | nfsm_srvfillattr; |
971b93e3 KM |
549 | nfsm_srvdone; |
550 | } | |
551 | ||
552 | /* | |
553 | * nfs create service | |
554 | * now does a truncate to 0 length via. setattr if it already exists | |
555 | */ | |
2c5b44a2 KM |
556 | nfsrv_create(nfsd, mrep, md, dpos, cred, nam, mrq) |
557 | struct nfsd *nfsd; | |
558 | struct mbuf *mrep, *md; | |
971b93e3 KM |
559 | caddr_t dpos; |
560 | struct ucred *cred; | |
2c5b44a2 | 561 | struct mbuf *nam, **mrq; |
971b93e3 | 562 | { |
9238aa59 | 563 | register struct nfsv2_fattr *fp; |
971b93e3 KM |
564 | struct vattr va; |
565 | register struct vattr *vap = &va; | |
74c40d5a | 566 | struct nameidata nd; |
0bd503ad | 567 | register caddr_t cp; |
236c2c19 | 568 | register u_long *tl; |
0bd503ad KM |
569 | register long t1; |
570 | caddr_t bpos; | |
2c5b44a2 | 571 | int error = 0, rdev, cache, len; |
0bd503ad | 572 | char *cp2; |
e8540f59 | 573 | struct mbuf *mb, *mb2, *mreq; |
971b93e3 KM |
574 | struct vnode *vp; |
575 | nfsv2fh_t nfh; | |
576 | fhandle_t *fhp; | |
2c5b44a2 | 577 | u_quad_t frev; |
971b93e3 | 578 | |
74c40d5a | 579 | nd.ni_nameiop = 0; |
971b93e3 KM |
580 | fhp = &nfh.fh_generic; |
581 | nfsm_srvmtofh(fhp); | |
582 | nfsm_srvstrsiz(len, NFS_MAXNAMLEN); | |
74c40d5a KM |
583 | nd.ni_cred = cred; |
584 | nd.ni_nameiop = CREATE | LOCKPARENT | LOCKLEAF | SAVESTART; | |
2c5b44a2 | 585 | if (error = nfs_namei(&nd, fhp, len, nfsd->nd_slp, nam, &md, &dpos, nfsd->nd_procp)) |
971b93e3 | 586 | nfsm_reply(0); |
3ee1461b | 587 | VATTR_NULL(vap); |
2c5b44a2 | 588 | nfsm_dissect(tl, u_long *, NFSX_SATTR); |
971b93e3 KM |
589 | /* |
590 | * Iff doesn't exist, create it | |
591 | * otherwise just truncate to 0 length | |
592 | * should I set the mode too ?? | |
593 | */ | |
74c40d5a | 594 | if (nd.ni_vp == NULL) { |
236c2c19 | 595 | vap->va_type = IFTOVT(fxdr_unsigned(u_long, *tl)); |
4249699a KM |
596 | if (vap->va_type == VNON) |
597 | vap->va_type = VREG; | |
236c2c19 KM |
598 | vap->va_mode = nfstov_mode(*tl); |
599 | rdev = fxdr_unsigned(long, *(tl+3)); | |
1c89915d | 600 | if (vap->va_type == VREG || vap->va_type == VSOCK) { |
5e03b55d | 601 | p->p_spare[1]--; |
74c40d5a | 602 | vrele(nd.ni_startdir); |
2c5b44a2 KM |
603 | nqsrv_getl(nd.ni_dvp, NQL_WRITE); |
604 | if (error = VOP_CREATE(&nd, vap, nfsd->nd_procp)) | |
d4e5799e | 605 | nfsm_reply(0); |
74c40d5a | 606 | FREE(nd.ni_pnbuf, M_NAMEI); |
d4e5799e KM |
607 | } else if (vap->va_type == VCHR || vap->va_type == VBLK || |
608 | vap->va_type == VFIFO) { | |
609 | if (vap->va_type == VCHR && rdev == 0xffffffff) | |
610 | vap->va_type = VFIFO; | |
611 | if (vap->va_type == VFIFO) { | |
612 | #ifndef FIFO | |
74c40d5a KM |
613 | VOP_ABORTOP(&nd); |
614 | vput(nd.ni_dvp); | |
d4e5799e | 615 | error = ENXIO; |
74c40d5a | 616 | goto out; |
d4e5799e | 617 | #endif /* FIFO */ |
2c5b44a2 | 618 | } else if (error = suser(cred, (u_short *)0)) { |
74c40d5a KM |
619 | VOP_ABORTOP(&nd); |
620 | vput(nd.ni_dvp); | |
621 | goto out; | |
d4e5799e KM |
622 | } else |
623 | vap->va_rdev = (dev_t)rdev; | |
2c5b44a2 KM |
624 | nqsrv_getl(nd.ni_dvp, NQL_WRITE); |
625 | if (error = VOP_MKNOD(&nd, vap, cred, nfsd->nd_procp)) { | |
5e03b55d | 626 | p->p_spare[1]--; |
74c40d5a | 627 | vrele(nd.ni_startdir); |
d4e5799e | 628 | nfsm_reply(0); |
74c40d5a KM |
629 | } |
630 | nd.ni_nameiop &= ~(OPMASK | LOCKPARENT | SAVESTART); | |
631 | nd.ni_nameiop |= LOOKUP; | |
5e03b55d | 632 | p->p_spare[1]--; |
2c5b44a2 | 633 | if (error = lookup(&nd, nfsd->nd_procp)) { |
74c40d5a | 634 | free(nd.ni_pnbuf, M_NAMEI); |
d4e5799e | 635 | nfsm_reply(0); |
74c40d5a KM |
636 | } |
637 | FREE(nd.ni_pnbuf, M_NAMEI); | |
638 | if (nd.ni_more) { | |
639 | vrele(nd.ni_dvp); | |
640 | vput(nd.ni_vp); | |
641 | VOP_ABORTOP(&nd); | |
642 | error = EINVAL; | |
643 | nfsm_reply(0); | |
644 | } | |
d4e5799e | 645 | } else { |
74c40d5a KM |
646 | VOP_ABORTOP(&nd); |
647 | vput(nd.ni_dvp); | |
d4e5799e | 648 | error = ENXIO; |
74c40d5a | 649 | goto out; |
d4e5799e | 650 | } |
74c40d5a | 651 | vp = nd.ni_vp; |
971b93e3 | 652 | } else { |
5e03b55d | 653 | p->p_spare[1]--; |
74c40d5a KM |
654 | vrele(nd.ni_startdir); |
655 | free(nd.ni_pnbuf, M_NAMEI); | |
656 | vp = nd.ni_vp; | |
657 | if (nd.ni_dvp == vp) | |
658 | vrele(nd.ni_dvp); | |
639383fa | 659 | else |
74c40d5a KM |
660 | vput(nd.ni_dvp); |
661 | VOP_ABORTOP(&nd); | |
971b93e3 | 662 | vap->va_size = 0; |
2c5b44a2 KM |
663 | nqsrv_getl(vp, NQL_WRITE); |
664 | if (error = VOP_SETATTR(vp, vap, cred, nfsd->nd_procp)) { | |
383e7b4c | 665 | vput(vp); |
971b93e3 | 666 | nfsm_reply(0); |
383e7b4c | 667 | } |
971b93e3 | 668 | } |
971b93e3 | 669 | bzero((caddr_t)fhp, sizeof(nfh)); |
54fb9dc2 | 670 | fhp->fh_fsid = vp->v_mount->mnt_stat.f_fsid; |
971b93e3 KM |
671 | if (error = VFS_VPTOFH(vp, &fhp->fh_fid)) { |
672 | vput(vp); | |
673 | nfsm_reply(0); | |
674 | } | |
2c5b44a2 | 675 | error = VOP_GETATTR(vp, vap, cred, nfsd->nd_procp); |
971b93e3 KM |
676 | vput(vp); |
677 | nfsm_reply(NFSX_FH+NFSX_FATTR); | |
678 | nfsm_srvfhtom(fhp); | |
9238aa59 | 679 | nfsm_build(fp, struct nfsv2_fattr *, NFSX_FATTR); |
e8540f59 | 680 | nfsm_srvfillattr; |
971b93e3 KM |
681 | return (error); |
682 | nfsmout: | |
74c40d5a | 683 | if (nd.ni_nameiop) |
5e03b55d | 684 | p->p_spare[1]--, vrele(nd.ni_startdir); |
74c40d5a KM |
685 | VOP_ABORTOP(&nd); |
686 | if (nd.ni_dvp == nd.ni_vp) | |
687 | vrele(nd.ni_dvp); | |
639383fa | 688 | else |
74c40d5a KM |
689 | vput(nd.ni_dvp); |
690 | if (nd.ni_vp) | |
691 | vput(nd.ni_vp); | |
971b93e3 | 692 | return (error); |
74c40d5a KM |
693 | |
694 | out: | |
5e03b55d | 695 | p->p_spare[1]--; |
74c40d5a KM |
696 | vrele(nd.ni_startdir); |
697 | free(nd.ni_pnbuf, M_NAMEI); | |
698 | nfsm_reply(0); | |
971b93e3 KM |
699 | } |
700 | ||
701 | /* | |
702 | * nfs remove service | |
703 | */ | |
2c5b44a2 KM |
704 | nfsrv_remove(nfsd, mrep, md, dpos, cred, nam, mrq) |
705 | struct nfsd *nfsd; | |
706 | struct mbuf *mrep, *md; | |
971b93e3 KM |
707 | caddr_t dpos; |
708 | struct ucred *cred; | |
2c5b44a2 | 709 | struct mbuf *nam, **mrq; |
971b93e3 | 710 | { |
74c40d5a | 711 | struct nameidata nd; |
236c2c19 | 712 | register u_long *tl; |
0bd503ad KM |
713 | register long t1; |
714 | caddr_t bpos; | |
2c5b44a2 | 715 | int error = 0, cache, len; |
0bd503ad | 716 | char *cp2; |
e8540f59 | 717 | struct mbuf *mb, *mreq; |
971b93e3 KM |
718 | struct vnode *vp; |
719 | nfsv2fh_t nfh; | |
720 | fhandle_t *fhp; | |
2c5b44a2 | 721 | u_quad_t frev; |
971b93e3 KM |
722 | |
723 | fhp = &nfh.fh_generic; | |
724 | nfsm_srvmtofh(fhp); | |
725 | nfsm_srvstrsiz(len, NFS_MAXNAMLEN); | |
74c40d5a KM |
726 | nd.ni_cred = cred; |
727 | nd.ni_nameiop = DELETE | LOCKPARENT | LOCKLEAF; | |
2c5b44a2 | 728 | if (error = nfs_namei(&nd, fhp, len, nfsd->nd_slp, nam, &md, &dpos, nfsd->nd_procp)) |
971b93e3 | 729 | nfsm_reply(0); |
74c40d5a | 730 | vp = nd.ni_vp; |
971b93e3 | 731 | if (vp->v_type == VDIR && |
2c5b44a2 | 732 | (error = suser(cred, (u_short *)0))) |
971b93e3 KM |
733 | goto out; |
734 | /* | |
4b0bcec3 | 735 | * The root of a mounted filesystem cannot be deleted. |
971b93e3 KM |
736 | */ |
737 | if (vp->v_flag & VROOT) { | |
738 | error = EBUSY; | |
739 | goto out; | |
740 | } | |
741 | if (vp->v_flag & VTEXT) | |
8986c97c | 742 | (void) vnode_pager_uncache(vp); |
971b93e3 | 743 | out: |
66955caf | 744 | if (!error) { |
2c5b44a2 KM |
745 | nqsrv_getl(nd.ni_dvp, NQL_WRITE); |
746 | nqsrv_getl(vp, NQL_WRITE); | |
747 | error = VOP_REMOVE(&nd, nfsd->nd_procp); | |
66955caf | 748 | } else { |
74c40d5a KM |
749 | VOP_ABORTOP(&nd); |
750 | if (nd.ni_dvp == vp) | |
751 | vrele(nd.ni_dvp); | |
639383fa | 752 | else |
74c40d5a | 753 | vput(nd.ni_dvp); |
66955caf KM |
754 | vput(vp); |
755 | } | |
971b93e3 KM |
756 | nfsm_reply(0); |
757 | nfsm_srvdone; | |
758 | } | |
759 | ||
760 | /* | |
761 | * nfs rename service | |
971b93e3 | 762 | */ |
2c5b44a2 KM |
763 | nfsrv_rename(nfsd, mrep, md, dpos, cred, nam, mrq) |
764 | struct nfsd *nfsd; | |
765 | struct mbuf *mrep, *md; | |
971b93e3 KM |
766 | caddr_t dpos; |
767 | struct ucred *cred; | |
2c5b44a2 | 768 | struct mbuf *nam, **mrq; |
971b93e3 | 769 | { |
236c2c19 | 770 | register u_long *tl; |
0bd503ad KM |
771 | register long t1; |
772 | caddr_t bpos; | |
2c5b44a2 | 773 | int error = 0, rdonly, cache, len, len2; |
0bd503ad | 774 | char *cp2; |
e8540f59 | 775 | struct mbuf *mb, *mreq; |
74c40d5a | 776 | struct nameidata fromnd, tond; |
971b93e3 KM |
777 | struct vnode *fvp, *tvp, *tdvp; |
778 | nfsv2fh_t fnfh, tnfh; | |
779 | fhandle_t *ffhp, *tfhp; | |
2c5b44a2 KM |
780 | u_quad_t frev; |
781 | uid_t saved_uid; | |
971b93e3 | 782 | |
971b93e3 KM |
783 | ffhp = &fnfh.fh_generic; |
784 | tfhp = &tnfh.fh_generic; | |
74c40d5a KM |
785 | fromnd.ni_nameiop = 0; |
786 | tond.ni_nameiop = 0; | |
971b93e3 KM |
787 | nfsm_srvmtofh(ffhp); |
788 | nfsm_srvstrsiz(len, NFS_MAXNAMLEN); | |
789 | /* | |
2c5b44a2 KM |
790 | * Remember our original uid so that we can reset cr_uid before |
791 | * the second nfs_namei() call, in case it is remapped. | |
971b93e3 | 792 | */ |
2c5b44a2 | 793 | saved_uid = cred->cr_uid; |
74c40d5a KM |
794 | fromnd.ni_cred = cred; |
795 | fromnd.ni_nameiop = DELETE | WANTPARENT | SAVESTART; | |
2c5b44a2 | 796 | if (error = nfs_namei(&fromnd, ffhp, len, nfsd->nd_slp, nam, &md, &dpos, nfsd->nd_procp)) |
971b93e3 | 797 | nfsm_reply(0); |
74c40d5a | 798 | fvp = fromnd.ni_vp; |
971b93e3 | 799 | nfsm_srvmtofh(tfhp); |
f0f1cbaa | 800 | nfsm_strsiz(len2, NFS_MAXNAMLEN); |
2c5b44a2 | 801 | cred->cr_uid = saved_uid; |
ffe6f482 | 802 | tond.ni_cred = cred; |
10bae9ee | 803 | tond.ni_nameiop = RENAME | LOCKPARENT | LOCKLEAF | NOCACHE |
74c40d5a | 804 | | SAVESTART; |
2c5b44a2 | 805 | if (error = nfs_namei(&tond, tfhp, len2, nfsd->nd_slp, nam, &md, &dpos, nfsd->nd_procp)) { |
74c40d5a KM |
806 | VOP_ABORTOP(&fromnd); |
807 | vrele(fromnd.ni_dvp); | |
66955caf KM |
808 | vrele(fvp); |
809 | goto out1; | |
810 | } | |
36c3043b KM |
811 | tdvp = tond.ni_dvp; |
812 | tvp = tond.ni_vp; | |
971b93e3 KM |
813 | if (tvp != NULL) { |
814 | if (fvp->v_type == VDIR && tvp->v_type != VDIR) { | |
815 | error = EISDIR; | |
816 | goto out; | |
817 | } else if (fvp->v_type != VDIR && tvp->v_type == VDIR) { | |
818 | error = ENOTDIR; | |
819 | goto out; | |
820 | } | |
2c5b44a2 KM |
821 | if (tvp->v_type == VDIR && tvp->v_mountedhere) { |
822 | error = EXDEV; | |
823 | goto out; | |
824 | } | |
825 | } | |
826 | if (fvp->v_type == VDIR && fvp->v_mountedhere) { | |
827 | error = EBUSY; | |
828 | goto out; | |
971b93e3 | 829 | } |
971b93e3 KM |
830 | if (fvp->v_mount != tdvp->v_mount) { |
831 | error = EXDEV; | |
832 | goto out; | |
833 | } | |
74c40d5a | 834 | if (fvp == tdvp) |
971b93e3 | 835 | error = EINVAL; |
74c40d5a KM |
836 | /* |
837 | * If source is the same as the destination (that is the | |
838 | * same vnode with the same name in the same directory), | |
839 | * then there is nothing to do. | |
840 | */ | |
841 | if (fvp == tvp && fromnd.ni_dvp == tdvp && | |
842 | fromnd.ni_namelen == tond.ni_namelen && | |
843 | !bcmp(fromnd.ni_ptr, tond.ni_ptr, fromnd.ni_namelen)) | |
844 | error = -1; | |
971b93e3 | 845 | out: |
66955caf | 846 | if (!error) { |
2c5b44a2 KM |
847 | nqsrv_getl(fromnd.ni_dvp, NQL_WRITE); |
848 | nqsrv_getl(tdvp, NQL_WRITE); | |
849 | if (tvp) | |
850 | nqsrv_getl(tvp, NQL_WRITE); | |
851 | error = VOP_RENAME(&fromnd, &tond, nfsd->nd_procp); | |
66955caf KM |
852 | } else { |
853 | VOP_ABORTOP(&tond); | |
639383fa KM |
854 | if (tdvp == tvp) |
855 | vrele(tdvp); | |
856 | else | |
857 | vput(tdvp); | |
66955caf KM |
858 | if (tvp) |
859 | vput(tvp); | |
74c40d5a KM |
860 | VOP_ABORTOP(&fromnd); |
861 | vrele(fromnd.ni_dvp); | |
66955caf | 862 | vrele(fvp); |
971b93e3 | 863 | } |
5e03b55d | 864 | p->p_spare[1]--; |
10bae9ee | 865 | vrele(tond.ni_startdir); |
74c40d5a | 866 | FREE(tond.ni_pnbuf, M_NAMEI); |
971b93e3 | 867 | out1: |
5e03b55d | 868 | p->p_spare[1]--; |
74c40d5a KM |
869 | vrele(fromnd.ni_startdir); |
870 | FREE(fromnd.ni_pnbuf, M_NAMEI); | |
971b93e3 KM |
871 | nfsm_reply(0); |
872 | return (error); | |
74c40d5a | 873 | |
971b93e3 | 874 | nfsmout: |
74c40d5a | 875 | if (tond.ni_nameiop) { |
5e03b55d | 876 | p->p_spare[1]--; |
74c40d5a KM |
877 | vrele(tond.ni_startdir); |
878 | FREE(tond.ni_pnbuf, M_NAMEI); | |
879 | } | |
880 | if (fromnd.ni_nameiop) { | |
5e03b55d | 881 | p->p_spare[1]--; |
74c40d5a KM |
882 | vrele(fromnd.ni_startdir); |
883 | FREE(fromnd.ni_pnbuf, M_NAMEI); | |
884 | VOP_ABORTOP(&fromnd); | |
885 | vrele(fromnd.ni_dvp); | |
886 | vrele(fvp); | |
887 | } | |
971b93e3 KM |
888 | return (error); |
889 | } | |
890 | ||
891 | /* | |
892 | * nfs link service | |
893 | */ | |
2c5b44a2 KM |
894 | nfsrv_link(nfsd, mrep, md, dpos, cred, nam, mrq) |
895 | struct nfsd *nfsd; | |
896 | struct mbuf *mrep, *md; | |
971b93e3 KM |
897 | caddr_t dpos; |
898 | struct ucred *cred; | |
2c5b44a2 | 899 | struct mbuf *nam, **mrq; |
971b93e3 | 900 | { |
74c40d5a | 901 | struct nameidata nd; |
236c2c19 | 902 | register u_long *tl; |
0bd503ad KM |
903 | register long t1; |
904 | caddr_t bpos; | |
2c5b44a2 | 905 | int error = 0, rdonly, cache, len; |
0bd503ad | 906 | char *cp2; |
e8540f59 | 907 | struct mbuf *mb, *mreq; |
971b93e3 KM |
908 | struct vnode *vp, *xp; |
909 | nfsv2fh_t nfh, dnfh; | |
910 | fhandle_t *fhp, *dfhp; | |
2c5b44a2 | 911 | u_quad_t frev; |
971b93e3 KM |
912 | |
913 | fhp = &nfh.fh_generic; | |
914 | dfhp = &dnfh.fh_generic; | |
915 | nfsm_srvmtofh(fhp); | |
916 | nfsm_srvmtofh(dfhp); | |
917 | nfsm_srvstrsiz(len, NFS_MAXNAMLEN); | |
2c5b44a2 | 918 | if (error = nfsrv_fhtovp(fhp, FALSE, &vp, cred, nfsd->nd_slp, nam, &rdonly)) |
971b93e3 | 919 | nfsm_reply(0); |
2c5b44a2 | 920 | if (vp->v_type == VDIR && (error = suser(cred, (u_short *)0))) |
971b93e3 | 921 | goto out1; |
74c40d5a KM |
922 | nd.ni_cred = cred; |
923 | nd.ni_nameiop = CREATE | LOCKPARENT; | |
2c5b44a2 | 924 | if (error = nfs_namei(&nd, dfhp, len, nfsd->nd_slp, nam, &md, &dpos, nfsd->nd_procp)) |
971b93e3 | 925 | goto out1; |
74c40d5a | 926 | xp = nd.ni_vp; |
971b93e3 KM |
927 | if (xp != NULL) { |
928 | error = EEXIST; | |
929 | goto out; | |
930 | } | |
74c40d5a | 931 | xp = nd.ni_dvp; |
971b93e3 KM |
932 | if (vp->v_mount != xp->v_mount) |
933 | error = EXDEV; | |
934 | out: | |
66955caf | 935 | if (!error) { |
2c5b44a2 KM |
936 | nqsrv_getl(vp, NQL_WRITE); |
937 | nqsrv_getl(xp, NQL_WRITE); | |
938 | error = VOP_LINK(vp, &nd, nfsd->nd_procp); | |
66955caf | 939 | } else { |
74c40d5a KM |
940 | VOP_ABORTOP(&nd); |
941 | if (nd.ni_dvp == nd.ni_vp) | |
942 | vrele(nd.ni_dvp); | |
639383fa | 943 | else |
74c40d5a KM |
944 | vput(nd.ni_dvp); |
945 | if (nd.ni_vp) | |
946 | vrele(nd.ni_vp); | |
66955caf | 947 | } |
971b93e3 KM |
948 | out1: |
949 | vrele(vp); | |
950 | nfsm_reply(0); | |
951 | nfsm_srvdone; | |
952 | } | |
953 | ||
954 | /* | |
955 | * nfs symbolic link service | |
956 | */ | |
2c5b44a2 KM |
957 | nfsrv_symlink(nfsd, mrep, md, dpos, cred, nam, mrq) |
958 | struct nfsd *nfsd; | |
959 | struct mbuf *mrep, *md; | |
971b93e3 KM |
960 | caddr_t dpos; |
961 | struct ucred *cred; | |
2c5b44a2 | 962 | struct mbuf *nam, **mrq; |
971b93e3 KM |
963 | { |
964 | struct vattr va; | |
74c40d5a | 965 | struct nameidata nd; |
971b93e3 | 966 | register struct vattr *vap = &va; |
236c2c19 | 967 | register u_long *tl; |
0bd503ad | 968 | register long t1; |
09e56da6 | 969 | struct nfsv2_sattr *sp; |
0bd503ad | 970 | caddr_t bpos; |
f0f1cbaa KM |
971 | struct uio io; |
972 | struct iovec iv; | |
2c5b44a2 | 973 | int error = 0, rdonly, cache, len, len2; |
f0f1cbaa | 974 | char *pathcp, *cp2; |
e8540f59 | 975 | struct mbuf *mb, *mreq; |
971b93e3 KM |
976 | nfsv2fh_t nfh; |
977 | fhandle_t *fhp; | |
2c5b44a2 | 978 | u_quad_t frev; |
971b93e3 | 979 | |
f0f1cbaa | 980 | pathcp = (char *)0; |
971b93e3 KM |
981 | fhp = &nfh.fh_generic; |
982 | nfsm_srvmtofh(fhp); | |
983 | nfsm_srvstrsiz(len, NFS_MAXNAMLEN); | |
74c40d5a KM |
984 | nd.ni_cred = cred; |
985 | nd.ni_nameiop = CREATE | LOCKPARENT; | |
2c5b44a2 | 986 | if (error = nfs_namei(&nd, fhp, len, nfsd->nd_slp, nam, &md, &dpos, nfsd->nd_procp)) |
66955caf | 987 | goto out; |
f0f1cbaa KM |
988 | nfsm_strsiz(len2, NFS_MAXPATHLEN); |
989 | MALLOC(pathcp, caddr_t, len2 + 1, M_TEMP, M_WAITOK); | |
990 | iv.iov_base = pathcp; | |
991 | iv.iov_len = len2; | |
992 | io.uio_resid = len2; | |
993 | io.uio_offset = 0; | |
994 | io.uio_iov = &iv; | |
995 | io.uio_iovcnt = 1; | |
996 | io.uio_segflg = UIO_SYSSPACE; | |
997 | io.uio_rw = UIO_READ; | |
236c2c19 | 998 | io.uio_procp = (struct proc *)0; |
f0f1cbaa | 999 | nfsm_mtouio(&io, len2); |
2c5b44a2 | 1000 | nfsm_dissect(sp, struct nfsv2_sattr *, NFSX_SATTR); |
f0f1cbaa | 1001 | *(pathcp + len2) = '\0'; |
74c40d5a KM |
1002 | if (nd.ni_vp) { |
1003 | VOP_ABORTOP(&nd); | |
1004 | if (nd.ni_dvp == nd.ni_vp) | |
1005 | vrele(nd.ni_dvp); | |
639383fa | 1006 | else |
74c40d5a KM |
1007 | vput(nd.ni_dvp); |
1008 | vrele(nd.ni_vp); | |
971b93e3 KM |
1009 | error = EEXIST; |
1010 | goto out; | |
1011 | } | |
3ee1461b | 1012 | VATTR_NULL(vap); |
09e56da6 | 1013 | vap->va_mode = fxdr_unsigned(u_short, sp->sa_mode); |
2c5b44a2 KM |
1014 | nqsrv_getl(nd.ni_dvp, NQL_WRITE); |
1015 | error = VOP_SYMLINK(&nd, vap, pathcp, nfsd->nd_procp); | |
971b93e3 | 1016 | out: |
f0f1cbaa KM |
1017 | if (pathcp) |
1018 | FREE(pathcp, M_TEMP); | |
971b93e3 KM |
1019 | nfsm_reply(0); |
1020 | return (error); | |
1021 | nfsmout: | |
74c40d5a KM |
1022 | VOP_ABORTOP(&nd); |
1023 | if (nd.ni_dvp == nd.ni_vp) | |
1024 | vrele(nd.ni_dvp); | |
639383fa | 1025 | else |
74c40d5a KM |
1026 | vput(nd.ni_dvp); |
1027 | if (nd.ni_vp) | |
1028 | vrele(nd.ni_vp); | |
f0f1cbaa KM |
1029 | if (pathcp) |
1030 | FREE(pathcp, M_TEMP); | |
971b93e3 KM |
1031 | return (error); |
1032 | } | |
1033 | ||
1034 | /* | |
1035 | * nfs mkdir service | |
1036 | */ | |
2c5b44a2 KM |
1037 | nfsrv_mkdir(nfsd, mrep, md, dpos, cred, nam, mrq) |
1038 | struct nfsd *nfsd; | |
1039 | struct mbuf *mrep, *md; | |
971b93e3 KM |
1040 | caddr_t dpos; |
1041 | struct ucred *cred; | |
2c5b44a2 | 1042 | struct mbuf *nam, **mrq; |
971b93e3 KM |
1043 | { |
1044 | struct vattr va; | |
1045 | register struct vattr *vap = &va; | |
9238aa59 | 1046 | register struct nfsv2_fattr *fp; |
74c40d5a | 1047 | struct nameidata nd; |
0bd503ad | 1048 | register caddr_t cp; |
236c2c19 | 1049 | register u_long *tl; |
0bd503ad KM |
1050 | register long t1; |
1051 | caddr_t bpos; | |
2c5b44a2 | 1052 | int error = 0, rdonly, cache, len; |
0bd503ad | 1053 | char *cp2; |
e8540f59 | 1054 | struct mbuf *mb, *mb2, *mreq; |
971b93e3 KM |
1055 | struct vnode *vp; |
1056 | nfsv2fh_t nfh; | |
1057 | fhandle_t *fhp; | |
2c5b44a2 | 1058 | u_quad_t frev; |
971b93e3 | 1059 | |
971b93e3 KM |
1060 | fhp = &nfh.fh_generic; |
1061 | nfsm_srvmtofh(fhp); | |
1062 | nfsm_srvstrsiz(len, NFS_MAXNAMLEN); | |
74c40d5a KM |
1063 | nd.ni_cred = cred; |
1064 | nd.ni_nameiop = CREATE | LOCKPARENT; | |
2c5b44a2 | 1065 | if (error = nfs_namei(&nd, fhp, len, nfsd->nd_slp, nam, &md, &dpos, nfsd->nd_procp)) |
971b93e3 | 1066 | nfsm_reply(0); |
2c5b44a2 | 1067 | nfsm_dissect(tl, u_long *, NFSX_UNSIGNED); |
3ee1461b | 1068 | VATTR_NULL(vap); |
971b93e3 | 1069 | vap->va_type = VDIR; |
236c2c19 | 1070 | vap->va_mode = nfstov_mode(*tl++); |
74c40d5a | 1071 | vp = nd.ni_vp; |
971b93e3 | 1072 | if (vp != NULL) { |
74c40d5a KM |
1073 | VOP_ABORTOP(&nd); |
1074 | if (nd.ni_dvp == vp) | |
1075 | vrele(nd.ni_dvp); | |
639383fa | 1076 | else |
74c40d5a | 1077 | vput(nd.ni_dvp); |
66955caf | 1078 | vrele(vp); |
971b93e3 KM |
1079 | error = EEXIST; |
1080 | nfsm_reply(0); | |
1081 | } | |
2c5b44a2 KM |
1082 | nqsrv_getl(nd.ni_dvp, NQL_WRITE); |
1083 | if (error = VOP_MKDIR(&nd, vap, nfsd->nd_procp)) | |
971b93e3 | 1084 | nfsm_reply(0); |
74c40d5a | 1085 | vp = nd.ni_vp; |
971b93e3 | 1086 | bzero((caddr_t)fhp, sizeof(nfh)); |
54fb9dc2 | 1087 | fhp->fh_fsid = vp->v_mount->mnt_stat.f_fsid; |
971b93e3 KM |
1088 | if (error = VFS_VPTOFH(vp, &fhp->fh_fid)) { |
1089 | vput(vp); | |
1090 | nfsm_reply(0); | |
1091 | } | |
2c5b44a2 | 1092 | error = VOP_GETATTR(vp, vap, cred, nfsd->nd_procp); |
971b93e3 KM |
1093 | vput(vp); |
1094 | nfsm_reply(NFSX_FH+NFSX_FATTR); | |
1095 | nfsm_srvfhtom(fhp); | |
9238aa59 | 1096 | nfsm_build(fp, struct nfsv2_fattr *, NFSX_FATTR); |
e8540f59 | 1097 | nfsm_srvfillattr; |
971b93e3 KM |
1098 | return (error); |
1099 | nfsmout: | |
74c40d5a KM |
1100 | VOP_ABORTOP(&nd); |
1101 | if (nd.ni_dvp == nd.ni_vp) | |
1102 | vrele(nd.ni_dvp); | |
639383fa | 1103 | else |
74c40d5a KM |
1104 | vput(nd.ni_dvp); |
1105 | if (nd.ni_vp) | |
1106 | vrele(nd.ni_vp); | |
971b93e3 KM |
1107 | return (error); |
1108 | } | |
1109 | ||
1110 | /* | |
1111 | * nfs rmdir service | |
1112 | */ | |
2c5b44a2 KM |
1113 | nfsrv_rmdir(nfsd, mrep, md, dpos, cred, nam, mrq) |
1114 | struct nfsd *nfsd; | |
1115 | struct mbuf *mrep, *md; | |
971b93e3 KM |
1116 | caddr_t dpos; |
1117 | struct ucred *cred; | |
2c5b44a2 | 1118 | struct mbuf *nam, **mrq; |
971b93e3 | 1119 | { |
236c2c19 | 1120 | register u_long *tl; |
0bd503ad KM |
1121 | register long t1; |
1122 | caddr_t bpos; | |
2c5b44a2 | 1123 | int error = 0, rdonly, cache, len; |
0bd503ad | 1124 | char *cp2; |
e8540f59 | 1125 | struct mbuf *mb, *mreq; |
971b93e3 KM |
1126 | struct vnode *vp; |
1127 | nfsv2fh_t nfh; | |
1128 | fhandle_t *fhp; | |
74c40d5a | 1129 | struct nameidata nd; |
2c5b44a2 | 1130 | u_quad_t frev; |
971b93e3 KM |
1131 | |
1132 | fhp = &nfh.fh_generic; | |
1133 | nfsm_srvmtofh(fhp); | |
1134 | nfsm_srvstrsiz(len, NFS_MAXNAMLEN); | |
74c40d5a KM |
1135 | nd.ni_cred = cred; |
1136 | nd.ni_nameiop = DELETE | LOCKPARENT | LOCKLEAF; | |
2c5b44a2 | 1137 | if (error = nfs_namei(&nd, fhp, len, nfsd->nd_slp, nam, &md, &dpos, nfsd->nd_procp)) |
971b93e3 | 1138 | nfsm_reply(0); |
74c40d5a | 1139 | vp = nd.ni_vp; |
971b93e3 KM |
1140 | if (vp->v_type != VDIR) { |
1141 | error = ENOTDIR; | |
1142 | goto out; | |
1143 | } | |
1144 | /* | |
1145 | * No rmdir "." please. | |
1146 | */ | |
74c40d5a | 1147 | if (nd.ni_dvp == vp) { |
971b93e3 KM |
1148 | error = EINVAL; |
1149 | goto out; | |
1150 | } | |
1151 | /* | |
4b0bcec3 | 1152 | * The root of a mounted filesystem cannot be deleted. |
971b93e3 KM |
1153 | */ |
1154 | if (vp->v_flag & VROOT) | |
1155 | error = EBUSY; | |
1156 | out: | |
66955caf | 1157 | if (!error) { |
2c5b44a2 KM |
1158 | nqsrv_getl(nd.ni_dvp, NQL_WRITE); |
1159 | nqsrv_getl(vp, NQL_WRITE); | |
1160 | error = VOP_RMDIR(&nd, nfsd->nd_procp); | |
66955caf | 1161 | } else { |
74c40d5a KM |
1162 | VOP_ABORTOP(&nd); |
1163 | if (nd.ni_dvp == nd.ni_vp) | |
1164 | vrele(nd.ni_dvp); | |
639383fa | 1165 | else |
74c40d5a | 1166 | vput(nd.ni_dvp); |
66955caf KM |
1167 | vput(vp); |
1168 | } | |
971b93e3 KM |
1169 | nfsm_reply(0); |
1170 | nfsm_srvdone; | |
1171 | } | |
1172 | ||
1173 | /* | |
1174 | * nfs readdir service | |
1175 | * - mallocs what it thinks is enough to read | |
236c2c19 | 1176 | * count rounded up to a multiple of NFS_DIRBLKSIZ <= NFS_MAXREADDIR |
971b93e3 | 1177 | * - calls VOP_READDIR() |
732aefe9 | 1178 | * - loops around building the reply |
36c3043b KM |
1179 | * if the output generated exceeds count break out of loop |
1180 | * The nfsm_clget macro is used here so that the reply will be packed | |
1181 | * tightly in mbuf clusters. | |
971b93e3 | 1182 | * - it only knows that it has encountered eof when the VOP_READDIR() |
36c3043b | 1183 | * reads nothing |
971b93e3 | 1184 | * - as such one readdir rpc will return eof false although you are there |
36c3043b | 1185 | * and then the next will return eof |
971b93e3 | 1186 | * - it trims out records with d_ino == 0 |
36c3043b KM |
1187 | * this doesn't matter for Unix clients, but they might confuse clients |
1188 | * for other os'. | |
971b93e3 | 1189 | * NB: It is tempting to set eof to true if the VOP_READDIR() reads less |
36c3043b KM |
1190 | * than requested, but this may not apply to all filesystems. For |
1191 | * example, client NFS does not { although it is never remote mounted | |
1192 | * anyhow } | |
2c5b44a2 | 1193 | * The alternate call nqnfsrv_readdirlook() does lookups as well. |
971b93e3 | 1194 | * PS: The NFS protocol spec. does not clarify what the "count" byte |
36c3043b KM |
1195 | * argument is a count of.. just name strings and file id's or the |
1196 | * entire reply rpc or ... | |
1197 | * I tried just file name and id sizes and it confused the Sun client, | |
1198 | * so I am using the full rpc size now. The "paranoia.." comment refers | |
1199 | * to including the status longwords that are not a part of the dir. | |
1200 | * "entry" structures, but are in the rpc. | |
971b93e3 | 1201 | */ |
2c5b44a2 KM |
1202 | struct flrep { |
1203 | u_long fl_cachable; | |
1204 | u_long fl_duration; | |
1205 | u_quad_t fl_frev; | |
1206 | nfsv2fh_t fl_nfh; | |
1207 | struct nfsv2_fattr fl_fattr; | |
1208 | }; | |
1209 | ||
1210 | nfsrv_readdir(nfsd, mrep, md, dpos, cred, nam, mrq) | |
1211 | struct nfsd *nfsd; | |
971b93e3 KM |
1212 | struct mbuf *mrep, *md; |
1213 | caddr_t dpos; | |
1214 | struct ucred *cred; | |
2c5b44a2 | 1215 | struct mbuf *nam, **mrq; |
971b93e3 KM |
1216 | { |
1217 | register char *bp, *be; | |
1218 | register struct mbuf *mp; | |
1219 | register struct direct *dp; | |
0bd503ad | 1220 | register caddr_t cp; |
236c2c19 | 1221 | register u_long *tl; |
0bd503ad KM |
1222 | register long t1; |
1223 | caddr_t bpos; | |
2c5b44a2 KM |
1224 | struct mbuf *mb, *mb2, *mreq, *mp2; |
1225 | char *cpos, *cend, *cp2, *rbuf; | |
971b93e3 | 1226 | struct vnode *vp; |
971b93e3 KM |
1227 | nfsv2fh_t nfh; |
1228 | fhandle_t *fhp; | |
1229 | struct uio io; | |
1230 | struct iovec iv; | |
2c5b44a2 KM |
1231 | struct vattr va; |
1232 | int len, nlen, rem, xfer, tsiz, i, error = 0; | |
1233 | int siz, cnt, fullsiz, eofflag, rdonly, cache; | |
1234 | u_quad_t frev; | |
971b93e3 | 1235 | u_long on; |
971b93e3 KM |
1236 | off_t off, toff; |
1237 | ||
1238 | fhp = &nfh.fh_generic; | |
1239 | nfsm_srvmtofh(fhp); | |
2c5b44a2 | 1240 | nfsm_dissect(tl, u_long *, 2*NFSX_UNSIGNED); |
236c2c19 KM |
1241 | toff = fxdr_unsigned(off_t, *tl++); |
1242 | off = (toff & ~(NFS_DIRBLKSIZ-1)); | |
1243 | on = (toff & (NFS_DIRBLKSIZ-1)); | |
1244 | cnt = fxdr_unsigned(int, *tl); | |
1245 | siz = ((cnt+NFS_DIRBLKSIZ-1) & ~(NFS_DIRBLKSIZ-1)); | |
f0f1cbaa KM |
1246 | if (cnt > NFS_MAXREADDIR) |
1247 | siz = NFS_MAXREADDIR; | |
971b93e3 | 1248 | fullsiz = siz; |
2c5b44a2 | 1249 | if (error = nfsrv_fhtovp(fhp, TRUE, &vp, cred, nfsd->nd_slp, nam, &rdonly)) |
971b93e3 | 1250 | nfsm_reply(0); |
2c5b44a2 KM |
1251 | nqsrv_getl(vp, NQL_READ); |
1252 | if (error = nfsrv_access(vp, VEXEC, cred, rdonly, nfsd->nd_procp)) { | |
971b93e3 KM |
1253 | vput(vp); |
1254 | nfsm_reply(0); | |
1255 | } | |
1256 | VOP_UNLOCK(vp); | |
1257 | MALLOC(rbuf, caddr_t, siz, M_TEMP, M_WAITOK); | |
1258 | again: | |
1259 | iv.iov_base = rbuf; | |
1260 | iv.iov_len = fullsiz; | |
1261 | io.uio_iov = &iv; | |
1262 | io.uio_iovcnt = 1; | |
1263 | io.uio_offset = off; | |
1264 | io.uio_resid = fullsiz; | |
1265 | io.uio_segflg = UIO_SYSSPACE; | |
1266 | io.uio_rw = UIO_READ; | |
236c2c19 | 1267 | io.uio_procp = (struct proc *)0; |
e49b1a6c | 1268 | error = VOP_READDIR(vp, &io, cred, &eofflag); |
e9843ca3 | 1269 | off = io.uio_offset; |
971b93e3 KM |
1270 | if (error) { |
1271 | vrele(vp); | |
1272 | free((caddr_t)rbuf, M_TEMP); | |
1273 | nfsm_reply(0); | |
1274 | } | |
1275 | if (io.uio_resid) { | |
1276 | siz -= io.uio_resid; | |
1277 | ||
1278 | /* | |
1279 | * If nothing read, return eof | |
1280 | * rpc reply | |
1281 | */ | |
1282 | if (siz == 0) { | |
1283 | vrele(vp); | |
1284 | nfsm_reply(2*NFSX_UNSIGNED); | |
236c2c19 KM |
1285 | nfsm_build(tl, u_long *, 2*NFSX_UNSIGNED); |
1286 | *tl++ = nfs_false; | |
1287 | *tl = nfs_true; | |
971b93e3 KM |
1288 | FREE((caddr_t)rbuf, M_TEMP); |
1289 | return (0); | |
1290 | } | |
1291 | } | |
732aefe9 | 1292 | |
971b93e3 KM |
1293 | /* |
1294 | * Check for degenerate cases of nothing useful read. | |
732aefe9 | 1295 | * If so go try again |
971b93e3 | 1296 | */ |
732aefe9 KM |
1297 | cpos = rbuf + on; |
1298 | cend = rbuf + siz; | |
1299 | dp = (struct direct *)cpos; | |
1300 | while (cpos < cend && dp->d_ino == 0) { | |
1301 | cpos += dp->d_reclen; | |
1302 | dp = (struct direct *)cpos; | |
1303 | } | |
1304 | if (cpos >= cend) { | |
971b93e3 KM |
1305 | toff = off; |
1306 | siz = fullsiz; | |
1307 | on = 0; | |
1308 | goto again; | |
1309 | } | |
732aefe9 KM |
1310 | |
1311 | cpos = rbuf + on; | |
1312 | cend = rbuf + siz; | |
1313 | dp = (struct direct *)cpos; | |
2c5b44a2 KM |
1314 | len = 3*NFSX_UNSIGNED; /* paranoia, probably can be 0 */ |
1315 | nfsm_reply(siz); | |
1316 | mp = mp2 = mb; | |
1317 | bp = bpos; | |
1318 | be = bp + M_TRAILINGSPACE(mp); | |
1319 | ||
1320 | /* Loop through the records and build reply */ | |
1321 | while (cpos < cend) { | |
1322 | if (dp->d_ino != 0) { | |
1323 | nlen = dp->d_namlen; | |
1324 | rem = nfsm_rndup(nlen)-nlen; | |
1325 | len += (4*NFSX_UNSIGNED + nlen + rem); | |
1326 | if (len > cnt) { | |
1327 | eofflag = 0; | |
1328 | break; | |
1329 | } | |
1330 | ||
1331 | /* Build the directory record xdr from the direct entry */ | |
1332 | nfsm_clget; | |
1333 | *tl = nfs_true; | |
1334 | bp += NFSX_UNSIGNED; | |
1335 | nfsm_clget; | |
1336 | *tl = txdr_unsigned(dp->d_ino); | |
1337 | bp += NFSX_UNSIGNED; | |
1338 | nfsm_clget; | |
1339 | *tl = txdr_unsigned(nlen); | |
1340 | bp += NFSX_UNSIGNED; | |
1341 | ||
1342 | /* And loop around copying the name */ | |
1343 | xfer = nlen; | |
1344 | cp = dp->d_name; | |
1345 | while (xfer > 0) { | |
1346 | nfsm_clget; | |
1347 | if ((bp+xfer) > be) | |
1348 | tsiz = be-bp; | |
1349 | else | |
1350 | tsiz = xfer; | |
1351 | bcopy(cp, bp, tsiz); | |
1352 | bp += tsiz; | |
1353 | xfer -= tsiz; | |
1354 | if (xfer > 0) | |
1355 | cp += tsiz; | |
1356 | } | |
1357 | /* And null pad to a long boundary */ | |
1358 | for (i = 0; i < rem; i++) | |
1359 | *bp++ = '\0'; | |
1360 | nfsm_clget; | |
1361 | ||
1362 | /* Finish off the record */ | |
1363 | toff += dp->d_reclen; | |
1364 | *tl = txdr_unsigned(toff); | |
1365 | bp += NFSX_UNSIGNED; | |
1366 | } else | |
1367 | toff += dp->d_reclen; | |
1368 | cpos += dp->d_reclen; | |
1369 | dp = (struct direct *)cpos; | |
1370 | } | |
971b93e3 | 1371 | vrele(vp); |
2c5b44a2 KM |
1372 | nfsm_clget; |
1373 | *tl = nfs_false; | |
1374 | bp += NFSX_UNSIGNED; | |
1375 | nfsm_clget; | |
1376 | if (eofflag) | |
1377 | *tl = nfs_true; | |
1378 | else | |
1379 | *tl = nfs_false; | |
1380 | bp += NFSX_UNSIGNED; | |
1381 | if (mp != mb) { | |
1382 | if (bp < be) | |
1383 | mp->m_len = bp - mtod(mp, caddr_t); | |
1384 | } else | |
1385 | mp->m_len += bp - bpos; | |
1386 | FREE(rbuf, M_TEMP); | |
1387 | nfsm_srvdone; | |
1388 | } | |
1389 | ||
1390 | nqnfsrv_readdirlook(nfsd, mrep, md, dpos, cred, nam, mrq) | |
1391 | struct nfsd *nfsd; | |
1392 | struct mbuf *mrep, *md; | |
1393 | caddr_t dpos; | |
1394 | struct ucred *cred; | |
1395 | struct mbuf *nam, **mrq; | |
1396 | { | |
1397 | register char *bp, *be; | |
1398 | register struct mbuf *mp; | |
1399 | register struct direct *dp; | |
1400 | register caddr_t cp; | |
1401 | register u_long *tl; | |
1402 | register long t1; | |
1403 | caddr_t bpos; | |
1404 | struct mbuf *mb, *mb2, *mreq, *mp2; | |
1405 | char *cpos, *cend, *cp2, *rbuf; | |
1406 | struct vnode *vp, *nvp; | |
1407 | struct flrep fl; | |
1408 | struct ufid *ufp = (struct ufid *)&fl.fl_nfh.fh_generic.fh_fid; | |
1409 | struct mount *mntp; | |
1410 | nfsv2fh_t nfh; | |
1411 | fhandle_t *fhp; | |
1412 | struct uio io; | |
1413 | struct iovec iv; | |
1414 | struct vattr va, *vap = &va; | |
1415 | struct nfsv2_fattr *fp; | |
1416 | int len, nlen, rem, xfer, tsiz, i, error = 0, duration2, cache2; | |
1417 | int siz, cnt, fullsiz, eofflag, rdonly, cache; | |
1418 | u_quad_t frev, frev2; | |
1419 | u_long on; | |
1420 | off_t off, toff; | |
1421 | ||
1422 | fhp = &nfh.fh_generic; | |
1423 | nfsm_srvmtofh(fhp); | |
1424 | nfsm_dissect(tl, u_long *, 3*NFSX_UNSIGNED); | |
1425 | toff = fxdr_unsigned(off_t, *tl++); | |
1426 | off = (toff & ~(NFS_DIRBLKSIZ-1)); | |
1427 | on = (toff & (NFS_DIRBLKSIZ-1)); | |
1428 | cnt = fxdr_unsigned(int, *tl++); | |
1429 | duration2 = fxdr_unsigned(int, *tl); | |
1430 | siz = ((cnt+NFS_DIRBLKSIZ-1) & ~(NFS_DIRBLKSIZ-1)); | |
1431 | if (cnt > NFS_MAXREADDIR) | |
1432 | siz = NFS_MAXREADDIR; | |
1433 | fullsiz = siz; | |
1434 | if (error = nfsrv_fhtovp(fhp, TRUE, &vp, cred, nfsd->nd_slp, nam, &rdonly)) | |
1435 | nfsm_reply(0); | |
1436 | nqsrv_getl(vp, NQL_READ); | |
1437 | if (error = nfsrv_access(vp, VEXEC, cred, rdonly, nfsd->nd_procp)) { | |
1438 | vput(vp); | |
1439 | nfsm_reply(0); | |
1440 | } | |
1441 | VOP_UNLOCK(vp); | |
1442 | MALLOC(rbuf, caddr_t, siz, M_TEMP, M_WAITOK); | |
1443 | again: | |
1444 | iv.iov_base = rbuf; | |
1445 | iv.iov_len = fullsiz; | |
1446 | io.uio_iov = &iv; | |
1447 | io.uio_iovcnt = 1; | |
1448 | io.uio_offset = off; | |
1449 | io.uio_resid = fullsiz; | |
1450 | io.uio_segflg = UIO_SYSSPACE; | |
1451 | io.uio_rw = UIO_READ; | |
1452 | io.uio_procp = (struct proc *)0; | |
1453 | error = VOP_READDIR(vp, &io, cred, &eofflag); | |
1454 | off = io.uio_offset; | |
1455 | if (error) { | |
1456 | vrele(vp); | |
1457 | free((caddr_t)rbuf, M_TEMP); | |
1458 | nfsm_reply(0); | |
1459 | } | |
1460 | if (io.uio_resid) { | |
1461 | siz -= io.uio_resid; | |
1462 | ||
1463 | /* | |
1464 | * If nothing read, return eof | |
1465 | * rpc reply | |
1466 | */ | |
1467 | if (siz == 0) { | |
1468 | vrele(vp); | |
1469 | nfsm_reply(2*NFSX_UNSIGNED); | |
1470 | nfsm_build(tl, u_long *, 2*NFSX_UNSIGNED); | |
1471 | *tl++ = nfs_false; | |
1472 | *tl = nfs_true; | |
1473 | FREE((caddr_t)rbuf, M_TEMP); | |
1474 | return (0); | |
1475 | } | |
1476 | } | |
1477 | ||
1478 | /* | |
1479 | * Check for degenerate cases of nothing useful read. | |
1480 | * If so go try again | |
1481 | */ | |
1482 | cpos = rbuf + on; | |
1483 | cend = rbuf + siz; | |
1484 | dp = (struct direct *)cpos; | |
1485 | while (cpos < cend && dp->d_ino == 0) { | |
1486 | cpos += dp->d_reclen; | |
1487 | dp = (struct direct *)cpos; | |
1488 | } | |
1489 | if (cpos >= cend) { | |
1490 | toff = off; | |
1491 | siz = fullsiz; | |
1492 | on = 0; | |
1493 | goto again; | |
1494 | } | |
1495 | ||
1496 | cpos = rbuf + on; | |
1497 | cend = rbuf + siz; | |
1498 | dp = (struct direct *)cpos; | |
36c3043b | 1499 | len = 3*NFSX_UNSIGNED; /* paranoia, probably can be 0 */ |
971b93e3 | 1500 | nfsm_reply(siz); |
2c5b44a2 KM |
1501 | mp = mp2 = mb; |
1502 | bp = bpos; | |
1503 | be = bp + M_TRAILINGSPACE(mp); | |
1504 | mntp = vp->v_mount; | |
971b93e3 KM |
1505 | |
1506 | /* Loop through the records and build reply */ | |
1507 | while (cpos < cend) { | |
1508 | if (dp->d_ino != 0) { | |
1509 | nlen = dp->d_namlen; | |
1510 | rem = nfsm_rndup(nlen)-nlen; | |
36c3043b | 1511 | |
971b93e3 | 1512 | /* |
2c5b44a2 KM |
1513 | * For readdir_and_lookup get the vnode using |
1514 | * the file number. | |
971b93e3 | 1515 | */ |
2c5b44a2 KM |
1516 | bzero((caddr_t)&fl.fl_nfh, sizeof (nfsv2fh_t)); |
1517 | ufp->ufid_len = sizeof (struct ufid); | |
1518 | ufp->ufid_ino = dp->d_ino; | |
1519 | fl.fl_nfh.fh_generic.fh_fsid = mntp->mnt_stat.f_fsid; | |
1520 | if (VFS_FHTOVP(mntp, (struct fid *)ufp, 1, &nvp)) | |
1521 | goto invalid; | |
1522 | (void) nqsrv_getlease(nvp, &duration2, NQL_READ, nfsd, | |
1523 | nam, &cache2, &frev2, cred); | |
1524 | fl.fl_duration = txdr_unsigned(duration2); | |
1525 | fl.fl_cachable = txdr_unsigned(cache2); | |
1526 | txdr_hyper(&frev2, &fl.fl_frev); | |
1527 | if (VOP_GETATTR(nvp, vap, cred, nfsd->nd_procp)) { | |
1528 | vput(nvp); | |
1529 | goto invalid; | |
1530 | } | |
1531 | vput(nvp); | |
1532 | fp = &fl.fl_fattr; | |
1533 | nfsm_srvfillattr; | |
1534 | len += (4*NFSX_UNSIGNED + nlen + rem + NFSX_FH | |
1535 | + NFSX_FATTR); | |
f0f1cbaa KM |
1536 | if (len > cnt) { |
1537 | eofflag = 0; | |
971b93e3 | 1538 | break; |
f0f1cbaa | 1539 | } |
36c3043b | 1540 | |
971b93e3 KM |
1541 | /* Build the directory record xdr from the direct entry */ |
1542 | nfsm_clget; | |
236c2c19 | 1543 | *tl = nfs_true; |
971b93e3 | 1544 | bp += NFSX_UNSIGNED; |
2c5b44a2 KM |
1545 | |
1546 | /* | |
1547 | * For readdir_and_lookup copy the stuff out. | |
1548 | */ | |
1549 | xfer = sizeof (struct flrep); | |
1550 | cp = (caddr_t)&fl; | |
1551 | while (xfer > 0) { | |
1552 | nfsm_clget; | |
1553 | if ((bp+xfer) > be) | |
1554 | tsiz = be-bp; | |
1555 | else | |
1556 | tsiz = xfer; | |
1557 | bcopy(cp, bp, tsiz); | |
1558 | bp += tsiz; | |
1559 | xfer -= tsiz; | |
1560 | if (xfer > 0) | |
1561 | cp += tsiz; | |
1562 | } | |
971b93e3 | 1563 | nfsm_clget; |
236c2c19 | 1564 | *tl = txdr_unsigned(dp->d_ino); |
971b93e3 KM |
1565 | bp += NFSX_UNSIGNED; |
1566 | nfsm_clget; | |
236c2c19 | 1567 | *tl = txdr_unsigned(nlen); |
971b93e3 | 1568 | bp += NFSX_UNSIGNED; |
36c3043b | 1569 | |
2c5b44a2 | 1570 | /* And loop around copying the name */ |
971b93e3 KM |
1571 | xfer = nlen; |
1572 | cp = dp->d_name; | |
1573 | while (xfer > 0) { | |
1574 | nfsm_clget; | |
1575 | if ((bp+xfer) > be) | |
1576 | tsiz = be-bp; | |
1577 | else | |
1578 | tsiz = xfer; | |
1579 | bcopy(cp, bp, tsiz); | |
1580 | bp += tsiz; | |
1581 | xfer -= tsiz; | |
1582 | if (xfer > 0) | |
1583 | cp += tsiz; | |
1584 | } | |
1585 | /* And null pad to a long boundary */ | |
1586 | for (i = 0; i < rem; i++) | |
1587 | *bp++ = '\0'; | |
1588 | nfsm_clget; | |
36c3043b | 1589 | |
971b93e3 KM |
1590 | /* Finish off the record */ |
1591 | toff += dp->d_reclen; | |
236c2c19 | 1592 | *tl = txdr_unsigned(toff); |
971b93e3 KM |
1593 | bp += NFSX_UNSIGNED; |
1594 | } else | |
2c5b44a2 | 1595 | invalid: |
971b93e3 KM |
1596 | toff += dp->d_reclen; |
1597 | cpos += dp->d_reclen; | |
1598 | dp = (struct direct *)cpos; | |
1599 | } | |
2c5b44a2 | 1600 | vrele(vp); |
971b93e3 | 1601 | nfsm_clget; |
236c2c19 | 1602 | *tl = nfs_false; |
971b93e3 KM |
1603 | bp += NFSX_UNSIGNED; |
1604 | nfsm_clget; | |
e49b1a6c | 1605 | if (eofflag) |
236c2c19 | 1606 | *tl = nfs_true; |
e49b1a6c | 1607 | else |
236c2c19 | 1608 | *tl = nfs_false; |
971b93e3 | 1609 | bp += NFSX_UNSIGNED; |
2c5b44a2 KM |
1610 | if (mp != mb) { |
1611 | if (bp < be) | |
1612 | mp->m_len = bp - mtod(mp, caddr_t); | |
1613 | } else | |
1614 | mp->m_len += bp - bpos; | |
971b93e3 KM |
1615 | FREE(rbuf, M_TEMP); |
1616 | nfsm_srvdone; | |
1617 | } | |
1618 | ||
1619 | /* | |
1620 | * nfs statfs service | |
1621 | */ | |
2c5b44a2 KM |
1622 | nfsrv_statfs(nfsd, mrep, md, dpos, cred, nam, mrq) |
1623 | struct nfsd *nfsd; | |
971b93e3 KM |
1624 | struct mbuf *mrep, *md; |
1625 | caddr_t dpos; | |
1626 | struct ucred *cred; | |
2c5b44a2 | 1627 | struct mbuf *nam, **mrq; |
971b93e3 KM |
1628 | { |
1629 | register struct statfs *sf; | |
9238aa59 | 1630 | register struct nfsv2_statfs *sfp; |
236c2c19 | 1631 | register u_long *tl; |
0bd503ad KM |
1632 | register long t1; |
1633 | caddr_t bpos; | |
2c5b44a2 | 1634 | int error = 0, rdonly, cache; |
0bd503ad | 1635 | char *cp2; |
e8540f59 | 1636 | struct mbuf *mb, *mb2, *mreq; |
971b93e3 KM |
1637 | struct vnode *vp; |
1638 | nfsv2fh_t nfh; | |
1639 | fhandle_t *fhp; | |
1640 | struct statfs statfs; | |
2c5b44a2 | 1641 | u_quad_t frev; |
971b93e3 KM |
1642 | |
1643 | fhp = &nfh.fh_generic; | |
1644 | nfsm_srvmtofh(fhp); | |
2c5b44a2 | 1645 | if (error = nfsrv_fhtovp(fhp, TRUE, &vp, cred, nfsd->nd_slp, nam, &rdonly)) |
971b93e3 KM |
1646 | nfsm_reply(0); |
1647 | sf = &statfs; | |
2c5b44a2 | 1648 | error = VFS_STATFS(vp->v_mount, sf, nfsd->nd_procp); |
971b93e3 KM |
1649 | vput(vp); |
1650 | nfsm_reply(NFSX_STATFS); | |
9238aa59 | 1651 | nfsm_build(sfp, struct nfsv2_statfs *, NFSX_STATFS); |
b28c3bcc | 1652 | sfp->sf_tsize = txdr_unsigned(NFS_MAXDGRAMDATA); |
a22e809c | 1653 | sfp->sf_bsize = txdr_unsigned(sf->f_bsize); |
9238aa59 RM |
1654 | sfp->sf_blocks = txdr_unsigned(sf->f_blocks); |
1655 | sfp->sf_bfree = txdr_unsigned(sf->f_bfree); | |
1656 | sfp->sf_bavail = txdr_unsigned(sf->f_bavail); | |
971b93e3 KM |
1657 | nfsm_srvdone; |
1658 | } | |
1659 | ||
1660 | /* | |
1661 | * Null operation, used by clients to ping server | |
1662 | */ | |
0bd503ad | 1663 | /* ARGSUSED */ |
2c5b44a2 KM |
1664 | nfsrv_null(nfsd, mrep, md, dpos, cred, nam, mrq) |
1665 | struct nfsd *nfsd; | |
971b93e3 KM |
1666 | struct mbuf *mrep, *md; |
1667 | caddr_t dpos; | |
1668 | struct ucred *cred; | |
2c5b44a2 | 1669 | struct mbuf *nam, **mrq; |
971b93e3 | 1670 | { |
0bd503ad | 1671 | caddr_t bpos; |
2c5b44a2 | 1672 | int error = VNOVAL, cache; |
e8540f59 | 1673 | struct mbuf *mb, *mreq; |
2c5b44a2 | 1674 | u_quad_t frev; |
971b93e3 | 1675 | |
971b93e3 | 1676 | nfsm_reply(0); |
0bd503ad | 1677 | return (error); |
971b93e3 KM |
1678 | } |
1679 | ||
1680 | /* | |
1681 | * No operation, used for obsolete procedures | |
1682 | */ | |
0bd503ad | 1683 | /* ARGSUSED */ |
2c5b44a2 KM |
1684 | nfsrv_noop(nfsd, mrep, md, dpos, cred, nam, mrq) |
1685 | struct nfsd *nfsd; | |
971b93e3 KM |
1686 | struct mbuf *mrep, *md; |
1687 | caddr_t dpos; | |
1688 | struct ucred *cred; | |
2c5b44a2 | 1689 | struct mbuf *nam, **mrq; |
971b93e3 | 1690 | { |
0bd503ad | 1691 | caddr_t bpos; |
2c5b44a2 | 1692 | int error, cache; |
e8540f59 | 1693 | struct mbuf *mb, *mreq; |
2c5b44a2 | 1694 | u_quad_t frev; |
971b93e3 | 1695 | |
2c5b44a2 KM |
1696 | if (nfsd->nd_repstat) |
1697 | error = nfsd->nd_repstat; | |
1698 | else | |
1699 | error = EPROCUNAVAIL; | |
971b93e3 | 1700 | nfsm_reply(0); |
0bd503ad | 1701 | return (error); |
971b93e3 | 1702 | } |
36c3043b | 1703 | |
24ed1a73 KM |
1704 | /* |
1705 | * Perform access checking for vnodes obtained from file handles that would | |
1706 | * refer to files already opened by a Unix client. You cannot just use | |
1707 | * vn_writechk() and VOP_ACCESS() for two reasons. | |
2c5b44a2 | 1708 | * 1 - You must check for exported rdonly as well as MNT_RDONLY for the write case |
24ed1a73 KM |
1709 | * 2 - The owner is to be given access irrespective of mode bits so that |
1710 | * processes that chmod after opening a file don't break. I don't like | |
1711 | * this because it opens a security hole, but since the nfs server opens | |
1712 | * a security hole the size of a barn door anyhow, what the heck. | |
1713 | */ | |
2c5b44a2 | 1714 | nfsrv_access(vp, flags, cred, rdonly, p) |
24ed1a73 KM |
1715 | register struct vnode *vp; |
1716 | int flags; | |
1717 | register struct ucred *cred; | |
2c5b44a2 | 1718 | int rdonly; |
236c2c19 | 1719 | struct proc *p; |
24ed1a73 KM |
1720 | { |
1721 | struct vattr vattr; | |
1722 | int error; | |
1723 | if (flags & VWRITE) { | |
2c5b44a2 | 1724 | /* Just vn_writechk() changed to check rdonly */ |
24ed1a73 KM |
1725 | /* |
1726 | * Disallow write attempts on read-only file systems; | |
1727 | * unless the file is a socket or a block or character | |
1728 | * device resident on the file system. | |
1729 | */ | |
2c5b44a2 | 1730 | if (rdonly || (vp->v_mount->mnt_flag & MNT_RDONLY)) { |
fef23149 KM |
1731 | switch (vp->v_type) { |
1732 | case VREG: case VDIR: case VLNK: | |
24ed1a73 | 1733 | return (EROFS); |
fef23149 KM |
1734 | } |
1735 | } | |
24ed1a73 KM |
1736 | /* |
1737 | * If there's shared text associated with | |
1738 | * the inode, try to free it up once. If | |
1739 | * we fail, we can't allow writing. | |
1740 | */ | |
8986c97c | 1741 | if ((vp->v_flag & VTEXT) && !vnode_pager_uncache(vp)) |
24ed1a73 | 1742 | return (ETXTBSY); |
24ed1a73 | 1743 | } |
236c2c19 | 1744 | if (error = VOP_GETATTR(vp, &vattr, cred, p)) |
fef23149 | 1745 | return (error); |
236c2c19 | 1746 | if ((error = VOP_ACCESS(vp, flags, cred, p)) && |
fef23149 KM |
1747 | cred->cr_uid != vattr.va_uid) |
1748 | return (error); | |
1749 | return (0); | |
24ed1a73 | 1750 | } |