DEVFS - remove dev_ops_add(), dev_ops_get(), and get_dev()
[dragonfly.git] / sys / netproto / smb / smb_dev.c
CommitLineData
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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 *
32 * $FreeBSD: src/sys/netsmb/smb_dev.c,v 1.2.2.1 2001/05/22 08:32:33 bp Exp $
028066b1 33 * $DragonFly: src/sys/netproto/smb/smb_dev.c,v 1.18 2007/05/08 02:31:42 dillon Exp $
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34 */
35#include <sys/param.h>
36#include <sys/kernel.h>
37#include <sys/systm.h>
38#include <sys/conf.h>
fef8985e 39#include <sys/device.h>
984263bc 40#include <sys/fcntl.h>
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41#include <sys/malloc.h>
42#include <sys/file.h> /* Must come after sys/malloc.h */
43#include <sys/poll.h>
44#include <sys/proc.h>
45#include <sys/select.h>
46#include <sys/socket.h>
47#include <sys/socketvar.h>
48#include <sys/sysctl.h>
49#include <sys/uio.h>
50#include <sys/vnode.h>
636ae7e8 51#include <sys/thread2.h>
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52
53#include <net/if.h>
54
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55#include "smb.h"
56#include "smb_conn.h"
57#include "smb_subr.h"
58#include "smb_dev.h"
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59
60#define SMB_GETDEV(dev) ((struct smb_dev*)(dev)->si_drv1)
61#define SMB_CHECKMINOR(dev) do { \
62 sdp = SMB_GETDEV(dev); \
63 if (sdp == NULL) return ENXIO; \
64 } while(0)
65
66static d_open_t nsmb_dev_open;
67static d_close_t nsmb_dev_close;
68static d_read_t nsmb_dev_read;
69static d_write_t nsmb_dev_write;
70static d_ioctl_t nsmb_dev_ioctl;
71static d_poll_t nsmb_dev_poll;
72
73MODULE_VERSION(netsmb, NSMB_VERSION);
74
75#define SI_NAMED 0
76
77static int smb_version = NSMB_VERSION;
78
79
80SYSCTL_DECL(_net_smb);
81SYSCTL_INT(_net_smb, OID_AUTO, version, CTLFLAG_RD, &smb_version, 0, "");
82
83static MALLOC_DEFINE(M_NSMBDEV, "NETSMBDEV", "NET/SMB device");
84
85
86/*
87int smb_dev_queue(struct smb_dev *ndp, struct smb_rq *rqp, int prio);
88*/
89
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90static struct dev_ops nsmb_ops = {
91 { NSMB_NAME, NSMB_MAJOR, 0 },
92 .d_open = nsmb_dev_open,
93 .d_close = nsmb_dev_close,
94 .d_read = nsmb_dev_read,
95 .d_write = nsmb_dev_write,
96 .d_ioctl = nsmb_dev_ioctl,
97 .d_poll = nsmb_dev_poll,
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98};
99
100
101static int
fef8985e 102nsmb_dev_open(struct dev_open_args *ap)
984263bc 103{
b13267a5 104 cdev_t dev = ap->a_head.a_dev;
984263bc 105 struct smb_dev *sdp;
dadab5e9 106
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107 sdp = SMB_GETDEV(dev);
108 if (sdp && (sdp->sd_flags & NSMBFL_OPEN))
109 return EBUSY;
110 if (sdp == NULL) {
efda3bd0 111 sdp = kmalloc(sizeof(*sdp), M_NSMBDEV, M_WAITOK);
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112 dev->si_drv1 = (void*)sdp;
113 }
114 /*
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115 * XXX: this is just crazy - make a device for an already passed
116 * device... someone should take care of it.
984263bc 117 */
e4c9c0c8 118 if ((dev->si_flags & SI_NAMED) == 0) {
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119 make_dev(&nsmb_ops, minor(dev),
120 ap->a_cred->cr_uid, ap->a_cred->cr_gid,
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121 0700, NSMB_NAME"%d", lminor(dev));
122 }
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123 bzero(sdp, sizeof(*sdp));
124/*
125 STAILQ_INIT(&sdp->sd_rqlist);
126 STAILQ_INIT(&sdp->sd_rplist);
127 bzero(&sdp->sd_pollinfo, sizeof(struct selinfo));
128*/
636ae7e8 129 crit_enter();
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130 sdp->sd_level = -1;
131 sdp->sd_flags |= NSMBFL_OPEN;
636ae7e8 132 crit_exit();
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133 return 0;
134}
135
136static int
fef8985e 137nsmb_dev_close(struct dev_close_args *ap)
984263bc 138{
b13267a5 139 cdev_t dev = ap->a_head.a_dev;
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140 struct smb_dev *sdp;
141 struct smb_vc *vcp;
142 struct smb_share *ssp;
143 struct smb_cred scred;
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144
145 SMB_CHECKMINOR(dev);
636ae7e8 146 crit_enter();
984263bc 147 if ((sdp->sd_flags & NSMBFL_OPEN) == 0) {
636ae7e8 148 crit_exit();
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149 return EBADF;
150 }
fef8985e 151 smb_makescred(&scred, curthread, NULL);
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152 ssp = sdp->sd_share;
153 if (ssp != NULL)
154 smb_share_rele(ssp, &scred);
155 vcp = sdp->sd_vc;
156 if (vcp != NULL)
157 smb_vc_rele(vcp, &scred);
158/*
159 smb_flushq(&sdp->sd_rqlist);
160 smb_flushq(&sdp->sd_rplist);
161*/
162 dev->si_drv1 = NULL;
efda3bd0 163 kfree(sdp, M_NSMBDEV);
636ae7e8 164 crit_exit();
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165 return 0;
166}
167
168
169static int
fef8985e 170nsmb_dev_ioctl(struct dev_ioctl_args *ap)
984263bc 171{
b13267a5 172 cdev_t dev = ap->a_head.a_dev;
fef8985e 173 caddr_t data = ap->a_data;
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174 struct smb_dev *sdp;
175 struct smb_vc *vcp;
176 struct smb_share *ssp;
177 struct smb_cred scred;
178 int error = 0;
179
180 SMB_CHECKMINOR(dev);
181 if ((sdp->sd_flags & NSMBFL_OPEN) == 0)
182 return EBADF;
183
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184 smb_makescred(&scred, NULL, ap->a_cred);
185 switch (ap->a_cmd) {
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186 case SMBIOC_OPENSESSION:
187 if (sdp->sd_vc)
188 return EISCONN;
189 error = smb_usr_opensession((struct smbioc_ossn*)data,
190 &scred, &vcp);
191 if (error)
192 break;
193 sdp->sd_vc = vcp;
fef8985e 194 smb_vc_unlock(vcp, 0);
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195 sdp->sd_level = SMBL_VC;
196 break;
197 case SMBIOC_OPENSHARE:
198 if (sdp->sd_share)
199 return EISCONN;
200 if (sdp->sd_vc == NULL)
201 return ENOTCONN;
202 error = smb_usr_openshare(sdp->sd_vc,
203 (struct smbioc_oshare*)data, &scred, &ssp);
204 if (error)
205 break;
206 sdp->sd_share = ssp;
fef8985e 207 smb_share_unlock(ssp, 0);
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208 sdp->sd_level = SMBL_SHARE;
209 break;
210 case SMBIOC_REQUEST:
211 if (sdp->sd_share == NULL)
212 return ENOTCONN;
213 error = smb_usr_simplerequest(sdp->sd_share,
214 (struct smbioc_rq*)data, &scred);
215 break;
216 case SMBIOC_T2RQ:
217 if (sdp->sd_share == NULL)
218 return ENOTCONN;
219 error = smb_usr_t2request(sdp->sd_share,
220 (struct smbioc_t2rq*)data, &scred);
221 break;
222 case SMBIOC_SETFLAGS: {
223 struct smbioc_flags *fl = (struct smbioc_flags*)data;
224 int on;
225
226 if (fl->ioc_level == SMBL_VC) {
227 if (fl->ioc_mask & SMBV_PERMANENT) {
228 on = fl->ioc_flags & SMBV_PERMANENT;
229 if ((vcp = sdp->sd_vc) == NULL)
230 return ENOTCONN;
231 error = smb_vc_get(vcp, LK_EXCLUSIVE, &scred);
232 if (error)
233 break;
234 if (on && (vcp->obj.co_flags & SMBV_PERMANENT) == 0) {
235 vcp->obj.co_flags |= SMBV_PERMANENT;
fef8985e 236 smb_vc_ref(vcp);
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237 } else if (!on && (vcp->obj.co_flags & SMBV_PERMANENT)) {
238 vcp->obj.co_flags &= ~SMBV_PERMANENT;
239 smb_vc_rele(vcp, &scred);
240 }
241 smb_vc_put(vcp, &scred);
242 } else
243 error = EINVAL;
244 } else if (fl->ioc_level == SMBL_SHARE) {
245 if (fl->ioc_mask & SMBS_PERMANENT) {
246 on = fl->ioc_flags & SMBS_PERMANENT;
247 if ((ssp = sdp->sd_share) == NULL)
248 return ENOTCONN;
249 error = smb_share_get(ssp, LK_EXCLUSIVE, &scred);
250 if (error)
251 break;
252 if (on && (ssp->obj.co_flags & SMBS_PERMANENT) == 0) {
253 ssp->obj.co_flags |= SMBS_PERMANENT;
fef8985e 254 smb_share_ref(ssp);
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255 } else if (!on && (ssp->obj.co_flags & SMBS_PERMANENT)) {
256 ssp->obj.co_flags &= ~SMBS_PERMANENT;
257 smb_share_rele(ssp, &scred);
258 }
259 smb_share_put(ssp, &scred);
260 } else
261 error = EINVAL;
262 break;
263 } else
264 error = EINVAL;
265 break;
266 }
267 case SMBIOC_LOOKUP:
268 if (sdp->sd_vc || sdp->sd_share)
269 return EISCONN;
270 vcp = NULL;
271 ssp = NULL;
272 error = smb_usr_lookup((struct smbioc_lookup*)data, &scred, &vcp, &ssp);
273 if (error)
274 break;
275 if (vcp) {
276 sdp->sd_vc = vcp;
fef8985e 277 smb_vc_unlock(vcp, 0);
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278 sdp->sd_level = SMBL_VC;
279 }
280 if (ssp) {
281 sdp->sd_share = ssp;
fef8985e 282 smb_share_unlock(ssp, 0);
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283 sdp->sd_level = SMBL_SHARE;
284 }
285 break;
286 case SMBIOC_READ: case SMBIOC_WRITE: {
287 struct smbioc_rw *rwrq = (struct smbioc_rw*)data;
288 struct uio auio;
289 struct iovec iov;
290
291 if ((ssp = sdp->sd_share) == NULL)
292 return ENOTCONN;
293 iov.iov_base = rwrq->ioc_base;
294 iov.iov_len = rwrq->ioc_cnt;
295 auio.uio_iov = &iov;
296 auio.uio_iovcnt = 1;
297 auio.uio_offset = rwrq->ioc_offset;
298 auio.uio_resid = rwrq->ioc_cnt;
299 auio.uio_segflg = UIO_USERSPACE;
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300 auio.uio_rw = (ap->a_cmd == SMBIOC_READ) ? UIO_READ : UIO_WRITE;
301 auio.uio_td = curthread;
302 if (ap->a_cmd == SMBIOC_READ)
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303 error = smb_read(ssp, rwrq->ioc_fh, &auio, &scred);
304 else
305 error = smb_write(ssp, rwrq->ioc_fh, &auio, &scred);
306 rwrq->ioc_cnt -= auio.uio_resid;
307 break;
308 }
309 default:
310 error = ENODEV;
311 }
312 return error;
313}
314
315static int
fef8985e 316nsmb_dev_read(struct dev_read_args *ap)
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317{
318 return EACCES;
319}
320
321static int
fef8985e 322nsmb_dev_write(struct dev_write_args *ap)
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323{
324 return EACCES;
325}
326
327static int
fef8985e 328nsmb_dev_poll(struct dev_poll_args *ap)
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329{
330 return ENODEV;
331}
332
333static int
334nsmb_dev_load(module_t mod, int cmd, void *arg)
335{
336 int error = 0;
337
338 switch (cmd) {
339 case MOD_LOAD:
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340 error = smb_sm_init();
341 if (error)
342 break;
343 error = smb_iod_init();
344 if (error) {
345 smb_sm_done();
346 break;
347 }
fef8985e 348 dev_ops_add(&nsmb_ops, 0, 0);
a6ec04bc 349 kprintf("netsmb_dev: loaded\n");
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350 break;
351 case MOD_UNLOAD:
352 smb_iod_done();
353 error = smb_sm_done();
354 error = 0;
cd29885a 355 dev_ops_remove_all(&nsmb_ops);
a6ec04bc 356 kprintf("netsmb_dev: unloaded\n");
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357 break;
358 default:
359 error = EINVAL;
360 break;
361 }
362 return error;
363}
364
365DEV_MODULE (dev_netsmb, nsmb_dev_load, 0);
366
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367int
368smb_dev2share(int fd, int mode, struct smb_cred *scred,
369 struct smb_share **sspp)
370{
371 struct file *fp;
372 struct vnode *vp;
373 struct smb_dev *sdp;
374 struct smb_share *ssp;
b13267a5 375 cdev_t dev;
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376 int error;
377
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378 KKASSERT(scred->scr_td->td_proc);
379
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380 fp = holdfp(scred->scr_td->td_proc->p_fd, fd, FREAD|FWRITE);
381 if (fp == NULL)
984263bc 382 return EBADF;
228b401d 383
984263bc 384 vp = (struct vnode*)fp->f_data;
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385 if (vp == NULL) {
386 error = EBADF;
387 goto done;
388 }
984263bc 389 dev = vn_todev(vp);
028066b1 390 if (dev == NULL) {
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391 error = EBADF;
392 goto done;
393 }
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394 SMB_CHECKMINOR(dev);
395 ssp = sdp->sd_share;
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396 if (ssp == NULL) {
397 error = ENOTCONN;
398 goto done;
399 }
984263bc 400 error = smb_share_get(ssp, LK_EXCLUSIVE, scred);
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401 if (error == 0)
402 *sspp = ssp;
403done:
404 fdrop(fp);
405 return (error);
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406}
407