1/*
2 * Copyright (c) 2000-2001, Boris Popov
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by Boris Popov.
16 * 4. Neither the name of the author nor the names of any co-contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 *
| 1/*
2 * Copyright (c) 2000-2001, Boris Popov
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by Boris Popov.
16 * 4. Neither the name of the author nor the names of any co-contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 *
|
33 *
34 */
35#include <sys/param.h>
36#include <sys/systm.h>
37#include <sys/resourcevar.h> /* defines plimit structure in proc struct */
38#include <sys/kernel.h>
39#include <sys/proc.h>
40#include <sys/fcntl.h>
41#include <sys/bio.h>
42#include <sys/buf.h>
43#include <sys/mount.h>
44#include <sys/namei.h>
45#include <sys/vnode.h>
46#include <sys/dirent.h>
47#include <sys/signalvar.h>
48#include <sys/sysctl.h>
49#include <sys/vmmeter.h>
50
51#include <vm/vm.h>
52#if __FreeBSD_version < 400000
53#include <vm/vm_prot.h>
54#endif
55#include <vm/vm_page.h>
56#include <vm/vm_extern.h>
57#include <vm/vm_object.h>
58#include <vm/vm_pager.h>
59#include <vm/vnode_pager.h>
60/*
61#include <sys/ioccom.h>
62*/
63#include <netsmb/smb.h>
64#include <netsmb/smb_conn.h>
65#include <netsmb/smb_subr.h>
66
67#include <fs/smbfs/smbfs.h>
68#include <fs/smbfs/smbfs_node.h>
69#include <fs/smbfs/smbfs_subr.h>
70
71/*#define SMBFS_RWGENERIC*/
72
73extern int smbfs_pbuf_freecnt;
74
75static int smbfs_fastlookup = 1;
76
77SYSCTL_DECL(_vfs_smbfs);
78SYSCTL_INT(_vfs_smbfs, OID_AUTO, fastlookup, CTLFLAG_RW, &smbfs_fastlookup, 0, "");
79
80
81#define DE_SIZE (sizeof(struct dirent))
82
83static int
84smbfs_readvdir(struct vnode *vp, struct uio *uio, struct ucred *cred)
85{
86 struct dirent de;
87 struct componentname cn;
88 struct smb_cred scred;
89 struct smbfs_fctx *ctx;
90 struct vnode *newvp;
91 struct smbnode *np = VTOSMB(vp);
92 int error/*, *eofflag = ap->a_eofflag*/;
93 long offset, limit;
94
95 np = VTOSMB(vp);
96 SMBVDEBUG("dirname='%s'\n", np->n_name);
97 smb_makescred(&scred, uio->uio_td, cred);
98 offset = uio->uio_offset / DE_SIZE; /* offset in the directory */
99 limit = uio->uio_resid / DE_SIZE;
100 if (uio->uio_resid < DE_SIZE || uio->uio_offset < 0)
101 return EINVAL;
102 while (limit && offset < 2) {
103 limit--;
104 bzero((caddr_t)&de, DE_SIZE);
105 de.d_reclen = DE_SIZE;
106 de.d_fileno = (offset == 0) ? np->n_ino :
107 (np->n_parent ? np->n_parent->n_ino : 2);
108 if (de.d_fileno == 0)
109 de.d_fileno = 0x7ffffffd + offset;
110 de.d_namlen = offset + 1;
111 de.d_name[0] = '.';
112 de.d_name[1] = '.';
113 de.d_name[offset + 1] = '\0';
114 de.d_type = DT_DIR;
115 error = uiomove((caddr_t)&de, DE_SIZE, uio);
116 if (error)
117 return error;
118 offset++;
119 uio->uio_offset += DE_SIZE;
120 }
121 if (limit == 0)
122 return 0;
123 if (offset != np->n_dirofs || np->n_dirseq == NULL) {
124 SMBVDEBUG("Reopening search %ld:%ld\n", offset, np->n_dirofs);
125 if (np->n_dirseq) {
126 smbfs_findclose(np->n_dirseq, &scred);
127 np->n_dirseq = NULL;
128 }
129 np->n_dirofs = 2;
130 error = smbfs_findopen(np, "*", 1,
131 SMB_FA_SYSTEM | SMB_FA_HIDDEN | SMB_FA_DIR,
132 &scred, &ctx);
133 if (error) {
134 SMBVDEBUG("can not open search, error = %d", error);
135 return error;
136 }
137 np->n_dirseq = ctx;
138 } else
139 ctx = np->n_dirseq;
140 while (np->n_dirofs < offset) {
141 error = smbfs_findnext(ctx, offset - np->n_dirofs++, &scred);
142 if (error) {
143 smbfs_findclose(np->n_dirseq, &scred);
144 np->n_dirseq = NULL;
145 return error == ENOENT ? 0 : error;
146 }
147 }
148 error = 0;
149 for (; limit; limit--, offset++) {
150 error = smbfs_findnext(ctx, limit, &scred);
151 if (error)
152 break;
153 np->n_dirofs++;
154 bzero((caddr_t)&de, DE_SIZE);
155 de.d_reclen = DE_SIZE;
156 de.d_fileno = ctx->f_attr.fa_ino;
157 de.d_type = (ctx->f_attr.fa_attr & SMB_FA_DIR) ? DT_DIR : DT_REG;
158 de.d_namlen = ctx->f_nmlen;
159 bcopy(ctx->f_name, de.d_name, de.d_namlen);
160 de.d_name[de.d_namlen] = '\0';
161 if (smbfs_fastlookup) {
162 error = smbfs_nget(vp->v_mount, vp, ctx->f_name,
163 ctx->f_nmlen, &ctx->f_attr, &newvp);
164 if (!error) {
165 cn.cn_nameptr = de.d_name;
166 cn.cn_namelen = de.d_namlen;
167 cache_enter(vp, newvp, &cn);
168 vput(newvp);
169 }
170 }
171 error = uiomove((caddr_t)&de, DE_SIZE, uio);
172 if (error)
173 break;
174 }
175 if (error == ENOENT)
176 error = 0;
177 uio->uio_offset = offset * DE_SIZE;
178 return error;
179}
180
181int
182smbfs_readvnode(struct vnode *vp, struct uio *uiop, struct ucred *cred)
183{
184 struct smbmount *smp = VFSTOSMBFS(vp->v_mount);
185 struct smbnode *np = VTOSMB(vp);
186 struct thread *td;
187 struct vattr vattr;
188 struct smb_cred scred;
189 int error, lks;
190
191 if (vp->v_type != VREG && vp->v_type != VDIR) {
192 SMBFSERR("vn types other than VREG or VDIR are unsupported !\n");
193 return EIO;
194 }
195 if (uiop->uio_resid == 0)
196 return 0;
197 if (uiop->uio_offset < 0)
198 return EINVAL;
199/* if (uiop->uio_offset + uiop->uio_resid > smp->nm_maxfilesize)
200 return EFBIG;*/
201 td = uiop->uio_td;
202 if (vp->v_type == VDIR) {
203 lks = LK_EXCLUSIVE;/*lockstatus(&vp->v_lock, td);*/
204 if (lks == LK_SHARED)
205 vn_lock(vp, LK_UPGRADE | LK_RETRY, td);
206 error = smbfs_readvdir(vp, uiop, cred);
207 if (lks == LK_SHARED)
208 vn_lock(vp, LK_DOWNGRADE | LK_RETRY, td);
209 return error;
210 }
211
212/* biosize = SSTOCN(smp->sm_share)->sc_txmax;*/
213 if (np->n_flag & NMODIFIED) {
214 smbfs_attr_cacheremove(vp);
215 error = VOP_GETATTR(vp, &vattr, cred, td);
216 if (error)
217 return error;
218 np->n_mtime.tv_sec = vattr.va_mtime.tv_sec;
219 } else {
220 error = VOP_GETATTR(vp, &vattr, cred, td);
221 if (error)
222 return error;
223 if (np->n_mtime.tv_sec != vattr.va_mtime.tv_sec) {
224 error = smbfs_vinvalbuf(vp, V_SAVE, cred, td, 1);
225 if (error)
226 return error;
227 np->n_mtime.tv_sec = vattr.va_mtime.tv_sec;
228 }
229 }
230 smb_makescred(&scred, td, cred);
231 return smb_read(smp->sm_share, np->n_fid, uiop, &scred);
232}
233
234int
235smbfs_writevnode(struct vnode *vp, struct uio *uiop,
236 struct ucred *cred, int ioflag)
237{
238 struct smbmount *smp = VTOSMBFS(vp);
239 struct smbnode *np = VTOSMB(vp);
240 struct smb_cred scred;
241 struct proc *p;
242 struct thread *td;
243 int error = 0;
244
245 if (vp->v_type != VREG) {
246 SMBERROR("vn types other than VREG unsupported !\n");
247 return EIO;
248 }
249 SMBVDEBUG("ofs=%d,resid=%d\n",(int)uiop->uio_offset, uiop->uio_resid);
250 if (uiop->uio_offset < 0)
251 return EINVAL;
252/* if (uiop->uio_offset + uiop->uio_resid > smp->nm_maxfilesize)
253 return (EFBIG);*/
254 td = uiop->uio_td;
255 p = td->td_proc;
256 if (ioflag & (IO_APPEND | IO_SYNC)) {
257 if (np->n_flag & NMODIFIED) {
258 smbfs_attr_cacheremove(vp);
259 error = smbfs_vinvalbuf(vp, V_SAVE, cred, td, 1);
260 if (error)
261 return error;
262 }
263 if (ioflag & IO_APPEND) {
264#if notyet
265 /*
266 * File size can be changed by another client
267 */
268 smbfs_attr_cacheremove(vp);
269 error = VOP_GETATTR(vp, &vattr, cred, td);
270 if (error) return (error);
271#endif
272 uiop->uio_offset = np->n_size;
273 }
274 }
275 if (uiop->uio_resid == 0)
276 return 0;
277 if (p && uiop->uio_offset + uiop->uio_resid > p->p_rlimit[RLIMIT_FSIZE].rlim_cur) {
278 PROC_LOCK(td->td_proc);
279 psignal(td->td_proc, SIGXFSZ);
280 PROC_UNLOCK(td->td_proc);
281 return EFBIG;
282 }
283 smb_makescred(&scred, td, cred);
284 error = smb_write(smp->sm_share, np->n_fid, uiop, &scred);
285 SMBVDEBUG("after: ofs=%d,resid=%d\n",(int)uiop->uio_offset, uiop->uio_resid);
286 if (!error) {
287 if (uiop->uio_offset > np->n_size) {
288 np->n_size = uiop->uio_offset;
289 vnode_pager_setsize(vp, np->n_size);
290 }
291 }
292 return error;
293}
294
295/*
296 * Do an I/O operation to/from a cache block.
297 */
298int
299smbfs_doio(struct buf *bp, struct ucred *cr, struct thread *td)
300{
301 struct vnode *vp = bp->b_vp;
302 struct smbmount *smp = VFSTOSMBFS(vp->v_mount);
303 struct smbnode *np = VTOSMB(vp);
304 struct uio uio, *uiop = &uio;
305 struct iovec io;
306 struct smb_cred scred;
307 int error = 0;
308
309 uiop->uio_iov = &io;
310 uiop->uio_iovcnt = 1;
311 uiop->uio_segflg = UIO_SYSSPACE;
312 uiop->uio_td = td;
313
314 smb_makescred(&scred, td, cr);
315
316 if (bp->b_iocmd == BIO_READ) {
317 io.iov_len = uiop->uio_resid = bp->b_bcount;
318 io.iov_base = bp->b_data;
319 uiop->uio_rw = UIO_READ;
320 switch (vp->v_type) {
321 case VREG:
322 uiop->uio_offset = ((off_t)bp->b_blkno) * DEV_BSIZE;
323 error = smb_read(smp->sm_share, np->n_fid, uiop, &scred);
324 if (error)
325 break;
326 if (uiop->uio_resid) {
327 int left = uiop->uio_resid;
328 int nread = bp->b_bcount - left;
329 if (left > 0)
330 bzero((char *)bp->b_data + nread, left);
331 }
332 break;
333 default:
334 printf("smbfs_doio: type %x unexpected\n",vp->v_type);
335 break;
336 };
337 if (error) {
338 bp->b_error = error;
339 bp->b_ioflags |= BIO_ERROR;
340 }
341 } else { /* write */
342 if (((bp->b_blkno * DEV_BSIZE) + bp->b_dirtyend) > np->n_size)
343 bp->b_dirtyend = np->n_size - (bp->b_blkno * DEV_BSIZE);
344
345 if (bp->b_dirtyend > bp->b_dirtyoff) {
346 io.iov_len = uiop->uio_resid = bp->b_dirtyend - bp->b_dirtyoff;
347 uiop->uio_offset = ((off_t)bp->b_blkno) * DEV_BSIZE + bp->b_dirtyoff;
348 io.iov_base = (char *)bp->b_data + bp->b_dirtyoff;
349 uiop->uio_rw = UIO_WRITE;
350 bp->b_flags |= B_WRITEINPROG;
351 error = smb_write(smp->sm_share, np->n_fid, uiop, &scred);
352 bp->b_flags &= ~B_WRITEINPROG;
353
354 /*
355 * For an interrupted write, the buffer is still valid
356 * and the write hasn't been pushed to the server yet,
357 * so we can't set BIO_ERROR and report the interruption
358 * by setting B_EINTR. For the B_ASYNC case, B_EINTR
359 * is not relevant, so the rpc attempt is essentially
360 * a noop. For the case of a V3 write rpc not being
361 * committed to stable storage, the block is still
362 * dirty and requires either a commit rpc or another
363 * write rpc with iomode == NFSV3WRITE_FILESYNC before
364 * the block is reused. This is indicated by setting
365 * the B_DELWRI and B_NEEDCOMMIT flags.
366 */
367 if (error == EINTR
368 || (!error && (bp->b_flags & B_NEEDCOMMIT))) {
369 int s;
370
371 s = splbio();
372 bp->b_flags &= ~(B_INVAL|B_NOCACHE);
373 if ((bp->b_flags & B_ASYNC) == 0)
374 bp->b_flags |= B_EINTR;
375 if ((bp->b_flags & B_PAGING) == 0) {
376 bdirty(bp);
377 bp->b_flags &= ~B_DONE;
378 }
379 if ((bp->b_flags & B_ASYNC) == 0)
380 bp->b_flags |= B_EINTR;
381 splx(s);
382 } else {
383 if (error) {
384 bp->b_ioflags |= BIO_ERROR;
385 bp->b_error = error;
386 }
387 bp->b_dirtyoff = bp->b_dirtyend = 0;
388 }
389 } else {
390 bp->b_resid = 0;
391 bufdone(bp);
392 return 0;
393 }
394 }
395 bp->b_resid = uiop->uio_resid;
396 bufdone(bp);
397 return error;
398}
399
400/*
401 * Vnode op for VM getpages.
402 * Wish wish .... get rid from multiple IO routines
403 */
404int
405smbfs_getpages(ap)
406 struct vop_getpages_args /* {
407 struct vnode *a_vp;
408 vm_page_t *a_m;
409 int a_count;
410 int a_reqpage;
411 vm_ooffset_t a_offset;
412 } */ *ap;
413{
414#ifdef SMBFS_RWGENERIC
415 return vop_stdgetpages(ap);
416#else
417 int i, error, nextoff, size, toff, npages, count;
418 struct uio uio;
419 struct iovec iov;
420 vm_offset_t kva;
421 struct buf *bp;
422 struct vnode *vp;
423 struct thread *td;
424 struct ucred *cred;
425 struct smbmount *smp;
426 struct smbnode *np;
427 struct smb_cred scred;
428 vm_page_t *pages;
429
430 vp = ap->a_vp;
431 td = curthread; /* XXX */
| 33 *
34 */
35#include <sys/param.h>
36#include <sys/systm.h>
37#include <sys/resourcevar.h> /* defines plimit structure in proc struct */
38#include <sys/kernel.h>
39#include <sys/proc.h>
40#include <sys/fcntl.h>
41#include <sys/bio.h>
42#include <sys/buf.h>
43#include <sys/mount.h>
44#include <sys/namei.h>
45#include <sys/vnode.h>
46#include <sys/dirent.h>
47#include <sys/signalvar.h>
48#include <sys/sysctl.h>
49#include <sys/vmmeter.h>
50
51#include <vm/vm.h>
52#if __FreeBSD_version < 400000
53#include <vm/vm_prot.h>
54#endif
55#include <vm/vm_page.h>
56#include <vm/vm_extern.h>
57#include <vm/vm_object.h>
58#include <vm/vm_pager.h>
59#include <vm/vnode_pager.h>
60/*
61#include <sys/ioccom.h>
62*/
63#include <netsmb/smb.h>
64#include <netsmb/smb_conn.h>
65#include <netsmb/smb_subr.h>
66
67#include <fs/smbfs/smbfs.h>
68#include <fs/smbfs/smbfs_node.h>
69#include <fs/smbfs/smbfs_subr.h>
70
71/*#define SMBFS_RWGENERIC*/
72
73extern int smbfs_pbuf_freecnt;
74
75static int smbfs_fastlookup = 1;
76
77SYSCTL_DECL(_vfs_smbfs);
78SYSCTL_INT(_vfs_smbfs, OID_AUTO, fastlookup, CTLFLAG_RW, &smbfs_fastlookup, 0, "");
79
80
81#define DE_SIZE (sizeof(struct dirent))
82
83static int
84smbfs_readvdir(struct vnode *vp, struct uio *uio, struct ucred *cred)
85{
86 struct dirent de;
87 struct componentname cn;
88 struct smb_cred scred;
89 struct smbfs_fctx *ctx;
90 struct vnode *newvp;
91 struct smbnode *np = VTOSMB(vp);
92 int error/*, *eofflag = ap->a_eofflag*/;
93 long offset, limit;
94
95 np = VTOSMB(vp);
96 SMBVDEBUG("dirname='%s'\n", np->n_name);
97 smb_makescred(&scred, uio->uio_td, cred);
98 offset = uio->uio_offset / DE_SIZE; /* offset in the directory */
99 limit = uio->uio_resid / DE_SIZE;
100 if (uio->uio_resid < DE_SIZE || uio->uio_offset < 0)
101 return EINVAL;
102 while (limit && offset < 2) {
103 limit--;
104 bzero((caddr_t)&de, DE_SIZE);
105 de.d_reclen = DE_SIZE;
106 de.d_fileno = (offset == 0) ? np->n_ino :
107 (np->n_parent ? np->n_parent->n_ino : 2);
108 if (de.d_fileno == 0)
109 de.d_fileno = 0x7ffffffd + offset;
110 de.d_namlen = offset + 1;
111 de.d_name[0] = '.';
112 de.d_name[1] = '.';
113 de.d_name[offset + 1] = '\0';
114 de.d_type = DT_DIR;
115 error = uiomove((caddr_t)&de, DE_SIZE, uio);
116 if (error)
117 return error;
118 offset++;
119 uio->uio_offset += DE_SIZE;
120 }
121 if (limit == 0)
122 return 0;
123 if (offset != np->n_dirofs || np->n_dirseq == NULL) {
124 SMBVDEBUG("Reopening search %ld:%ld\n", offset, np->n_dirofs);
125 if (np->n_dirseq) {
126 smbfs_findclose(np->n_dirseq, &scred);
127 np->n_dirseq = NULL;
128 }
129 np->n_dirofs = 2;
130 error = smbfs_findopen(np, "*", 1,
131 SMB_FA_SYSTEM | SMB_FA_HIDDEN | SMB_FA_DIR,
132 &scred, &ctx);
133 if (error) {
134 SMBVDEBUG("can not open search, error = %d", error);
135 return error;
136 }
137 np->n_dirseq = ctx;
138 } else
139 ctx = np->n_dirseq;
140 while (np->n_dirofs < offset) {
141 error = smbfs_findnext(ctx, offset - np->n_dirofs++, &scred);
142 if (error) {
143 smbfs_findclose(np->n_dirseq, &scred);
144 np->n_dirseq = NULL;
145 return error == ENOENT ? 0 : error;
146 }
147 }
148 error = 0;
149 for (; limit; limit--, offset++) {
150 error = smbfs_findnext(ctx, limit, &scred);
151 if (error)
152 break;
153 np->n_dirofs++;
154 bzero((caddr_t)&de, DE_SIZE);
155 de.d_reclen = DE_SIZE;
156 de.d_fileno = ctx->f_attr.fa_ino;
157 de.d_type = (ctx->f_attr.fa_attr & SMB_FA_DIR) ? DT_DIR : DT_REG;
158 de.d_namlen = ctx->f_nmlen;
159 bcopy(ctx->f_name, de.d_name, de.d_namlen);
160 de.d_name[de.d_namlen] = '\0';
161 if (smbfs_fastlookup) {
162 error = smbfs_nget(vp->v_mount, vp, ctx->f_name,
163 ctx->f_nmlen, &ctx->f_attr, &newvp);
164 if (!error) {
165 cn.cn_nameptr = de.d_name;
166 cn.cn_namelen = de.d_namlen;
167 cache_enter(vp, newvp, &cn);
168 vput(newvp);
169 }
170 }
171 error = uiomove((caddr_t)&de, DE_SIZE, uio);
172 if (error)
173 break;
174 }
175 if (error == ENOENT)
176 error = 0;
177 uio->uio_offset = offset * DE_SIZE;
178 return error;
179}
180
181int
182smbfs_readvnode(struct vnode *vp, struct uio *uiop, struct ucred *cred)
183{
184 struct smbmount *smp = VFSTOSMBFS(vp->v_mount);
185 struct smbnode *np = VTOSMB(vp);
186 struct thread *td;
187 struct vattr vattr;
188 struct smb_cred scred;
189 int error, lks;
190
191 if (vp->v_type != VREG && vp->v_type != VDIR) {
192 SMBFSERR("vn types other than VREG or VDIR are unsupported !\n");
193 return EIO;
194 }
195 if (uiop->uio_resid == 0)
196 return 0;
197 if (uiop->uio_offset < 0)
198 return EINVAL;
199/* if (uiop->uio_offset + uiop->uio_resid > smp->nm_maxfilesize)
200 return EFBIG;*/
201 td = uiop->uio_td;
202 if (vp->v_type == VDIR) {
203 lks = LK_EXCLUSIVE;/*lockstatus(&vp->v_lock, td);*/
204 if (lks == LK_SHARED)
205 vn_lock(vp, LK_UPGRADE | LK_RETRY, td);
206 error = smbfs_readvdir(vp, uiop, cred);
207 if (lks == LK_SHARED)
208 vn_lock(vp, LK_DOWNGRADE | LK_RETRY, td);
209 return error;
210 }
211
212/* biosize = SSTOCN(smp->sm_share)->sc_txmax;*/
213 if (np->n_flag & NMODIFIED) {
214 smbfs_attr_cacheremove(vp);
215 error = VOP_GETATTR(vp, &vattr, cred, td);
216 if (error)
217 return error;
218 np->n_mtime.tv_sec = vattr.va_mtime.tv_sec;
219 } else {
220 error = VOP_GETATTR(vp, &vattr, cred, td);
221 if (error)
222 return error;
223 if (np->n_mtime.tv_sec != vattr.va_mtime.tv_sec) {
224 error = smbfs_vinvalbuf(vp, V_SAVE, cred, td, 1);
225 if (error)
226 return error;
227 np->n_mtime.tv_sec = vattr.va_mtime.tv_sec;
228 }
229 }
230 smb_makescred(&scred, td, cred);
231 return smb_read(smp->sm_share, np->n_fid, uiop, &scred);
232}
233
234int
235smbfs_writevnode(struct vnode *vp, struct uio *uiop,
236 struct ucred *cred, int ioflag)
237{
238 struct smbmount *smp = VTOSMBFS(vp);
239 struct smbnode *np = VTOSMB(vp);
240 struct smb_cred scred;
241 struct proc *p;
242 struct thread *td;
243 int error = 0;
244
245 if (vp->v_type != VREG) {
246 SMBERROR("vn types other than VREG unsupported !\n");
247 return EIO;
248 }
249 SMBVDEBUG("ofs=%d,resid=%d\n",(int)uiop->uio_offset, uiop->uio_resid);
250 if (uiop->uio_offset < 0)
251 return EINVAL;
252/* if (uiop->uio_offset + uiop->uio_resid > smp->nm_maxfilesize)
253 return (EFBIG);*/
254 td = uiop->uio_td;
255 p = td->td_proc;
256 if (ioflag & (IO_APPEND | IO_SYNC)) {
257 if (np->n_flag & NMODIFIED) {
258 smbfs_attr_cacheremove(vp);
259 error = smbfs_vinvalbuf(vp, V_SAVE, cred, td, 1);
260 if (error)
261 return error;
262 }
263 if (ioflag & IO_APPEND) {
264#if notyet
265 /*
266 * File size can be changed by another client
267 */
268 smbfs_attr_cacheremove(vp);
269 error = VOP_GETATTR(vp, &vattr, cred, td);
270 if (error) return (error);
271#endif
272 uiop->uio_offset = np->n_size;
273 }
274 }
275 if (uiop->uio_resid == 0)
276 return 0;
277 if (p && uiop->uio_offset + uiop->uio_resid > p->p_rlimit[RLIMIT_FSIZE].rlim_cur) {
278 PROC_LOCK(td->td_proc);
279 psignal(td->td_proc, SIGXFSZ);
280 PROC_UNLOCK(td->td_proc);
281 return EFBIG;
282 }
283 smb_makescred(&scred, td, cred);
284 error = smb_write(smp->sm_share, np->n_fid, uiop, &scred);
285 SMBVDEBUG("after: ofs=%d,resid=%d\n",(int)uiop->uio_offset, uiop->uio_resid);
286 if (!error) {
287 if (uiop->uio_offset > np->n_size) {
288 np->n_size = uiop->uio_offset;
289 vnode_pager_setsize(vp, np->n_size);
290 }
291 }
292 return error;
293}
294
295/*
296 * Do an I/O operation to/from a cache block.
297 */
298int
299smbfs_doio(struct buf *bp, struct ucred *cr, struct thread *td)
300{
301 struct vnode *vp = bp->b_vp;
302 struct smbmount *smp = VFSTOSMBFS(vp->v_mount);
303 struct smbnode *np = VTOSMB(vp);
304 struct uio uio, *uiop = &uio;
305 struct iovec io;
306 struct smb_cred scred;
307 int error = 0;
308
309 uiop->uio_iov = &io;
310 uiop->uio_iovcnt = 1;
311 uiop->uio_segflg = UIO_SYSSPACE;
312 uiop->uio_td = td;
313
314 smb_makescred(&scred, td, cr);
315
316 if (bp->b_iocmd == BIO_READ) {
317 io.iov_len = uiop->uio_resid = bp->b_bcount;
318 io.iov_base = bp->b_data;
319 uiop->uio_rw = UIO_READ;
320 switch (vp->v_type) {
321 case VREG:
322 uiop->uio_offset = ((off_t)bp->b_blkno) * DEV_BSIZE;
323 error = smb_read(smp->sm_share, np->n_fid, uiop, &scred);
324 if (error)
325 break;
326 if (uiop->uio_resid) {
327 int left = uiop->uio_resid;
328 int nread = bp->b_bcount - left;
329 if (left > 0)
330 bzero((char *)bp->b_data + nread, left);
331 }
332 break;
333 default:
334 printf("smbfs_doio: type %x unexpected\n",vp->v_type);
335 break;
336 };
337 if (error) {
338 bp->b_error = error;
339 bp->b_ioflags |= BIO_ERROR;
340 }
341 } else { /* write */
342 if (((bp->b_blkno * DEV_BSIZE) + bp->b_dirtyend) > np->n_size)
343 bp->b_dirtyend = np->n_size - (bp->b_blkno * DEV_BSIZE);
344
345 if (bp->b_dirtyend > bp->b_dirtyoff) {
346 io.iov_len = uiop->uio_resid = bp->b_dirtyend - bp->b_dirtyoff;
347 uiop->uio_offset = ((off_t)bp->b_blkno) * DEV_BSIZE + bp->b_dirtyoff;
348 io.iov_base = (char *)bp->b_data + bp->b_dirtyoff;
349 uiop->uio_rw = UIO_WRITE;
350 bp->b_flags |= B_WRITEINPROG;
351 error = smb_write(smp->sm_share, np->n_fid, uiop, &scred);
352 bp->b_flags &= ~B_WRITEINPROG;
353
354 /*
355 * For an interrupted write, the buffer is still valid
356 * and the write hasn't been pushed to the server yet,
357 * so we can't set BIO_ERROR and report the interruption
358 * by setting B_EINTR. For the B_ASYNC case, B_EINTR
359 * is not relevant, so the rpc attempt is essentially
360 * a noop. For the case of a V3 write rpc not being
361 * committed to stable storage, the block is still
362 * dirty and requires either a commit rpc or another
363 * write rpc with iomode == NFSV3WRITE_FILESYNC before
364 * the block is reused. This is indicated by setting
365 * the B_DELWRI and B_NEEDCOMMIT flags.
366 */
367 if (error == EINTR
368 || (!error && (bp->b_flags & B_NEEDCOMMIT))) {
369 int s;
370
371 s = splbio();
372 bp->b_flags &= ~(B_INVAL|B_NOCACHE);
373 if ((bp->b_flags & B_ASYNC) == 0)
374 bp->b_flags |= B_EINTR;
375 if ((bp->b_flags & B_PAGING) == 0) {
376 bdirty(bp);
377 bp->b_flags &= ~B_DONE;
378 }
379 if ((bp->b_flags & B_ASYNC) == 0)
380 bp->b_flags |= B_EINTR;
381 splx(s);
382 } else {
383 if (error) {
384 bp->b_ioflags |= BIO_ERROR;
385 bp->b_error = error;
386 }
387 bp->b_dirtyoff = bp->b_dirtyend = 0;
388 }
389 } else {
390 bp->b_resid = 0;
391 bufdone(bp);
392 return 0;
393 }
394 }
395 bp->b_resid = uiop->uio_resid;
396 bufdone(bp);
397 return error;
398}
399
400/*
401 * Vnode op for VM getpages.
402 * Wish wish .... get rid from multiple IO routines
403 */
404int
405smbfs_getpages(ap)
406 struct vop_getpages_args /* {
407 struct vnode *a_vp;
408 vm_page_t *a_m;
409 int a_count;
410 int a_reqpage;
411 vm_ooffset_t a_offset;
412 } */ *ap;
413{
414#ifdef SMBFS_RWGENERIC
415 return vop_stdgetpages(ap);
416#else
417 int i, error, nextoff, size, toff, npages, count;
418 struct uio uio;
419 struct iovec iov;
420 vm_offset_t kva;
421 struct buf *bp;
422 struct vnode *vp;
423 struct thread *td;
424 struct ucred *cred;
425 struct smbmount *smp;
426 struct smbnode *np;
427 struct smb_cred scred;
428 vm_page_t *pages;
429
430 vp = ap->a_vp;
431 td = curthread; /* XXX */
|
571/* VOP_OPEN(vp, FWRITE, cred, td);*/
572 np = VTOSMB(vp);
573 smp = VFSTOSMBFS(vp->v_mount);
574 pages = ap->a_m;
575 count = ap->a_count;
576 rtvals = ap->a_rtvals;
577 npages = btoc(count);
578
579 for (i = 0; i < npages; i++) {
580 rtvals[i] = VM_PAGER_AGAIN;
581 }
582
583#if __FreeBSD_version >= 400000
584 bp = getpbuf(&smbfs_pbuf_freecnt);
585#else
586 bp = getpbuf();
587#endif
588 kva = (vm_offset_t) bp->b_data;
589 pmap_qenter(kva, pages, npages);
590 cnt.v_vnodeout++;
591 cnt.v_vnodepgsout += count;
592
593 iov.iov_base = (caddr_t) kva;
594 iov.iov_len = count;
595 uio.uio_iov = &iov;
596 uio.uio_iovcnt = 1;
597 uio.uio_offset = IDX_TO_OFF(pages[0]->pindex);
598 uio.uio_resid = count;
599 uio.uio_segflg = UIO_SYSSPACE;
600 uio.uio_rw = UIO_WRITE;
601 uio.uio_td = td;
602 SMBVDEBUG("ofs=%d,resid=%d\n",(int)uio.uio_offset, uio.uio_resid);
603
604 smb_makescred(&scred, td, cred);
605 error = smb_write(smp->sm_share, np->n_fid, &uio, &scred);
606/* VOP_CLOSE(vp, FWRITE, cred, td);*/
607 SMBVDEBUG("paged write done: %d\n", error);
608
609 pmap_qremove(kva, npages);
610#if __FreeBSD_version >= 400000
611 relpbuf(bp, &smbfs_pbuf_freecnt);
612#else
613 relpbuf(bp);
614#endif
615
616 if (!error) {
617 int nwritten = round_page(count - uio.uio_resid) / PAGE_SIZE;
618 for (i = 0; i < nwritten; i++) {
619 rtvals[i] = VM_PAGER_OK;
620 vm_page_undirty(pages[i]);
621 }
622 }
623 return rtvals[0];
624#endif /* SMBFS_RWGENERIC */
625}
626
627/*
628 * Flush and invalidate all dirty buffers. If another process is already
629 * doing the flush, just wait for completion.
630 */
631int
632smbfs_vinvalbuf(vp, flags, cred, td, intrflg)
633 struct vnode *vp;
634 int flags;
635 struct ucred *cred;
636 struct thread *td;
637 int intrflg;
638{
639 struct smbnode *np = VTOSMB(vp);
640 int error = 0, slpflag, slptimeo;
641
642 if (vp->v_flag & VXLOCK)
643 return 0;
644 if (intrflg) {
645 slpflag = PCATCH;
646 slptimeo = 2 * hz;
647 } else {
648 slpflag = 0;
649 slptimeo = 0;
650 }
651 while (np->n_flag & NFLUSHINPROG) {
652 np->n_flag |= NFLUSHWANT;
653 error = tsleep((caddr_t)&np->n_flag, PRIBIO + 2, "smfsvinv", slptimeo);
654 error = smb_proc_intr(td->td_proc);
655 if (error == EINTR && intrflg)
656 return EINTR;
657 }
658 np->n_flag |= NFLUSHINPROG;
659 error = vinvalbuf(vp, flags, cred, td, slpflag, 0);
660 while (error) {
661 if (intrflg && (error == ERESTART || error == EINTR)) {
662 np->n_flag &= ~NFLUSHINPROG;
663 if (np->n_flag & NFLUSHWANT) {
664 np->n_flag &= ~NFLUSHWANT;
665 wakeup((caddr_t)&np->n_flag);
666 }
667 return EINTR;
668 }
669 error = vinvalbuf(vp, flags, cred, td, slpflag, 0);
670 }
671 np->n_flag &= ~(NMODIFIED | NFLUSHINPROG);
672 if (np->n_flag & NFLUSHWANT) {
673 np->n_flag &= ~NFLUSHWANT;
674 wakeup((caddr_t)&np->n_flag);
675 }
676 return (error);
677}
| 571/* VOP_OPEN(vp, FWRITE, cred, td);*/
572 np = VTOSMB(vp);
573 smp = VFSTOSMBFS(vp->v_mount);
574 pages = ap->a_m;
575 count = ap->a_count;
576 rtvals = ap->a_rtvals;
577 npages = btoc(count);
578
579 for (i = 0; i < npages; i++) {
580 rtvals[i] = VM_PAGER_AGAIN;
581 }
582
583#if __FreeBSD_version >= 400000
584 bp = getpbuf(&smbfs_pbuf_freecnt);
585#else
586 bp = getpbuf();
587#endif
588 kva = (vm_offset_t) bp->b_data;
589 pmap_qenter(kva, pages, npages);
590 cnt.v_vnodeout++;
591 cnt.v_vnodepgsout += count;
592
593 iov.iov_base = (caddr_t) kva;
594 iov.iov_len = count;
595 uio.uio_iov = &iov;
596 uio.uio_iovcnt = 1;
597 uio.uio_offset = IDX_TO_OFF(pages[0]->pindex);
598 uio.uio_resid = count;
599 uio.uio_segflg = UIO_SYSSPACE;
600 uio.uio_rw = UIO_WRITE;
601 uio.uio_td = td;
602 SMBVDEBUG("ofs=%d,resid=%d\n",(int)uio.uio_offset, uio.uio_resid);
603
604 smb_makescred(&scred, td, cred);
605 error = smb_write(smp->sm_share, np->n_fid, &uio, &scred);
606/* VOP_CLOSE(vp, FWRITE, cred, td);*/
607 SMBVDEBUG("paged write done: %d\n", error);
608
609 pmap_qremove(kva, npages);
610#if __FreeBSD_version >= 400000
611 relpbuf(bp, &smbfs_pbuf_freecnt);
612#else
613 relpbuf(bp);
614#endif
615
616 if (!error) {
617 int nwritten = round_page(count - uio.uio_resid) / PAGE_SIZE;
618 for (i = 0; i < nwritten; i++) {
619 rtvals[i] = VM_PAGER_OK;
620 vm_page_undirty(pages[i]);
621 }
622 }
623 return rtvals[0];
624#endif /* SMBFS_RWGENERIC */
625}
626
627/*
628 * Flush and invalidate all dirty buffers. If another process is already
629 * doing the flush, just wait for completion.
630 */
631int
632smbfs_vinvalbuf(vp, flags, cred, td, intrflg)
633 struct vnode *vp;
634 int flags;
635 struct ucred *cred;
636 struct thread *td;
637 int intrflg;
638{
639 struct smbnode *np = VTOSMB(vp);
640 int error = 0, slpflag, slptimeo;
641
642 if (vp->v_flag & VXLOCK)
643 return 0;
644 if (intrflg) {
645 slpflag = PCATCH;
646 slptimeo = 2 * hz;
647 } else {
648 slpflag = 0;
649 slptimeo = 0;
650 }
651 while (np->n_flag & NFLUSHINPROG) {
652 np->n_flag |= NFLUSHWANT;
653 error = tsleep((caddr_t)&np->n_flag, PRIBIO + 2, "smfsvinv", slptimeo);
654 error = smb_proc_intr(td->td_proc);
655 if (error == EINTR && intrflg)
656 return EINTR;
657 }
658 np->n_flag |= NFLUSHINPROG;
659 error = vinvalbuf(vp, flags, cred, td, slpflag, 0);
660 while (error) {
661 if (intrflg && (error == ERESTART || error == EINTR)) {
662 np->n_flag &= ~NFLUSHINPROG;
663 if (np->n_flag & NFLUSHWANT) {
664 np->n_flag &= ~NFLUSHWANT;
665 wakeup((caddr_t)&np->n_flag);
666 }
667 return EINTR;
668 }
669 error = vinvalbuf(vp, flags, cred, td, slpflag, 0);
670 }
671 np->n_flag &= ~(NMODIFIED | NFLUSHINPROG);
672 if (np->n_flag & NFLUSHWANT) {
673 np->n_flag &= ~NFLUSHWANT;
674 wakeup((caddr_t)&np->n_flag);
675 }
676 return (error);
677}
|