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: head/sys/netsmb/smb_dev.c 82042 2001-08-21 08:58:02Z bp $
|
32 * $FreeBSD: head/sys/netsmb/smb_dev.c 87192 2001-12-02 08:47:29Z bp $ |
33 */ 34#include <sys/param.h> 35#include <sys/kernel.h> 36#include <sys/systm.h> 37#include <sys/conf.h> 38#include <sys/fcntl.h> 39#include <sys/ioccom.h> 40#include <sys/lock.h> 41#include <sys/malloc.h> 42#include <sys/file.h> /* Must come after sys/malloc.h */ 43#include <sys/mbuf.h> 44#include <sys/poll.h> 45#include <sys/proc.h> 46#include <sys/select.h> 47#include <sys/socket.h> 48#include <sys/socketvar.h> 49#include <sys/sysctl.h> 50#include <sys/uio.h> 51#include <sys/vnode.h> 52 53#include <net/if.h> 54 55#include <netsmb/smb.h> 56#include <netsmb/smb_conn.h> 57#include <netsmb/smb_subr.h> 58#include <netsmb/smb_dev.h> 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_DEPEND(netsmb, libiconv, 1, 1, 1); 74MODULE_VERSION(netsmb, NSMB_VERSION); 75 76static int smb_version = NSMB_VERSION; 77 78 79SYSCTL_DECL(_net_smb); 80SYSCTL_INT(_net_smb, OID_AUTO, version, CTLFLAG_RD, &smb_version, 0, ""); 81 82static MALLOC_DEFINE(M_NSMBDEV, "NETSMBDEV", "NET/SMB device"); 83 84 85/* 86int smb_dev_queue(struct smb_dev *ndp, struct smb_rq *rqp, int prio); 87*/ 88 89static struct cdevsw nsmb_cdevsw = { 90 /* open */ nsmb_dev_open, 91 /* close */ nsmb_dev_close, 92 /* read */ nsmb_dev_read, 93 /* write */ nsmb_dev_write, 94 /* ioctl */ nsmb_dev_ioctl, 95 /* poll */ nsmb_dev_poll, 96 /* mmap */ nommap, 97 /* strategy */ nostrategy, 98 /* name */ NSMB_NAME, 99 /* maj */ NSMB_MAJOR, 100 /* dump */ nodump, 101 /* psize */ nopsize, 102 /* flags */ 0, 103#ifndef FB_CURRENT 104 /* bmaj */ -1 105#endif 106}; 107 108static eventhandler_tag nsmb_dev_tag; 109 110static void 111nsmb_dev_clone(void *arg, char *name, int namelen, dev_t *dev) 112{ 113 int min; 114 115 if (*dev != NODEV) 116 return; 117 if (dev_stdclone(name, NULL, NSMB_NAME, &min) != 1) 118 return; 119 *dev = make_dev(&nsmb_cdevsw, min, 0, 0, 0600, NSMB_NAME"%d", min); 120} 121 122static int
|
123nsmb_dev_open(dev_t dev, int oflags, int devtype, struct proc *p)
|
123nsmb_dev_open(dev_t dev, int oflags, int devtype, struct thread *td) |
124{ 125 struct smb_dev *sdp;
|
126 struct proc *p = td->td_proc; |
127 struct ucred *cred = p->p_ucred; 128 int s; 129 130 sdp = SMB_GETDEV(dev); 131 if (sdp && (sdp->sd_flags & NSMBFL_OPEN)) 132 return EBUSY; 133 if (sdp == NULL) { 134 sdp = malloc(sizeof(*sdp), M_NSMBDEV, M_WAITOK); 135 dev->si_drv1 = (void*)sdp; 136 } 137 /* 138 * XXX: this is just crazy - make a device for an already passed device... 139 * someone should take care of it. 140 */ 141 if ((dev->si_flags & SI_NAMED) == 0) 142 make_dev(&nsmb_cdevsw, minor(dev), cred->cr_uid, cred->cr_gid, 0700, 143 NSMB_NAME"%d", dev2unit(dev)); 144 bzero(sdp, sizeof(*sdp)); 145/* 146 STAILQ_INIT(&sdp->sd_rqlist); 147 STAILQ_INIT(&sdp->sd_rplist); 148 bzero(&sdp->sd_pollinfo, sizeof(struct selinfo)); 149*/ 150 s = splimp(); 151 sdp->sd_level = -1; 152 sdp->sd_flags |= NSMBFL_OPEN; 153 splx(s); 154 return 0; 155} 156 157static int
|
157nsmb_dev_close(dev_t dev, int flag, int fmt, struct proc *p)
|
158nsmb_dev_close(dev_t dev, int flag, int fmt, struct thread *td) |
159{ 160 struct smb_dev *sdp; 161 struct smb_vc *vcp; 162 struct smb_share *ssp; 163 struct smb_cred scred; 164 int s; 165 166 SMB_CHECKMINOR(dev); 167 s = splimp(); 168 if ((sdp->sd_flags & NSMBFL_OPEN) == 0) { 169 splx(s); 170 return EBADF; 171 }
|
171 smb_makescred(&scred, p, NULL);
|
172 smb_makescred(&scred, td, NULL); |
173 ssp = sdp->sd_share; 174 if (ssp != NULL) 175 smb_share_rele(ssp, &scred); 176 vcp = sdp->sd_vc; 177 if (vcp != NULL) 178 smb_vc_rele(vcp, &scred); 179/* 180 smb_flushq(&sdp->sd_rqlist); 181 smb_flushq(&sdp->sd_rplist); 182*/ 183 dev->si_drv1 = NULL; 184 free(sdp, M_NSMBDEV); 185 destroy_dev(dev); 186 splx(s); 187 return 0; 188} 189 190 191static int
|
191nsmb_dev_ioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct proc *p)
|
192nsmb_dev_ioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct thread *td) |
193{ 194 struct smb_dev *sdp; 195 struct smb_vc *vcp; 196 struct smb_share *ssp; 197 struct smb_cred scred; 198 int error = 0; 199 200 SMB_CHECKMINOR(dev); 201 if ((sdp->sd_flags & NSMBFL_OPEN) == 0) 202 return EBADF; 203
|
203 smb_makescred(&scred, p, NULL);
|
204 smb_makescred(&scred, td, NULL); |
205 switch (cmd) { 206 case SMBIOC_OPENSESSION: 207 if (sdp->sd_vc) 208 return EISCONN; 209 error = smb_usr_opensession((struct smbioc_ossn*)data, 210 &scred, &vcp); 211 if (error) 212 break; 213 sdp->sd_vc = vcp;
|
213 smb_vc_unlock(vcp, 0, p);
|
214 smb_vc_unlock(vcp, 0, td); |
215 sdp->sd_level = SMBL_VC; 216 break; 217 case SMBIOC_OPENSHARE: 218 if (sdp->sd_share) 219 return EISCONN; 220 if (sdp->sd_vc == NULL) 221 return ENOTCONN; 222 error = smb_usr_openshare(sdp->sd_vc, 223 (struct smbioc_oshare*)data, &scred, &ssp); 224 if (error) 225 break; 226 sdp->sd_share = ssp;
|
226 smb_share_unlock(ssp, 0, p);
|
227 smb_share_unlock(ssp, 0, td); |
228 sdp->sd_level = SMBL_SHARE; 229 break; 230 case SMBIOC_REQUEST: 231 if (sdp->sd_share == NULL) 232 return ENOTCONN; 233 error = smb_usr_simplerequest(sdp->sd_share, 234 (struct smbioc_rq*)data, &scred); 235 break; 236 case SMBIOC_T2RQ: 237 if (sdp->sd_share == NULL) 238 return ENOTCONN; 239 error = smb_usr_t2request(sdp->sd_share, 240 (struct smbioc_t2rq*)data, &scred); 241 break; 242 case SMBIOC_SETFLAGS: { 243 struct smbioc_flags *fl = (struct smbioc_flags*)data; 244 int on; 245 246 if (fl->ioc_level == SMBL_VC) { 247 if (fl->ioc_mask & SMBV_PERMANENT) { 248 on = fl->ioc_flags & SMBV_PERMANENT; 249 if ((vcp = sdp->sd_vc) == NULL) 250 return ENOTCONN; 251 error = smb_vc_get(vcp, LK_EXCLUSIVE, &scred); 252 if (error) 253 break; 254 if (on && (vcp->obj.co_flags & SMBV_PERMANENT) == 0) { 255 vcp->obj.co_flags |= SMBV_PERMANENT;
|
255 smb_vc_ref(vcp, p);
|
256 smb_vc_ref(vcp); |
257 } else if (!on && (vcp->obj.co_flags & SMBV_PERMANENT)) { 258 vcp->obj.co_flags &= ~SMBV_PERMANENT; 259 smb_vc_rele(vcp, &scred); 260 } 261 smb_vc_put(vcp, &scred); 262 } else 263 error = EINVAL; 264 } else if (fl->ioc_level == SMBL_SHARE) { 265 if (fl->ioc_mask & SMBS_PERMANENT) { 266 on = fl->ioc_flags & SMBS_PERMANENT; 267 if ((ssp = sdp->sd_share) == NULL) 268 return ENOTCONN; 269 error = smb_share_get(ssp, LK_EXCLUSIVE, &scred); 270 if (error) 271 break; 272 if (on && (ssp->obj.co_flags & SMBS_PERMANENT) == 0) { 273 ssp->obj.co_flags |= SMBS_PERMANENT;
|
273 smb_share_ref(ssp, p);
|
274 smb_share_ref(ssp); |
275 } else if (!on && (ssp->obj.co_flags & SMBS_PERMANENT)) { 276 ssp->obj.co_flags &= ~SMBS_PERMANENT; 277 smb_share_rele(ssp, &scred); 278 } 279 smb_share_put(ssp, &scred); 280 } else 281 error = EINVAL; 282 break; 283 } else 284 error = EINVAL; 285 break; 286 } 287 case SMBIOC_LOOKUP: 288 if (sdp->sd_vc || sdp->sd_share) 289 return EISCONN; 290 vcp = NULL; 291 ssp = NULL; 292 error = smb_usr_lookup((struct smbioc_lookup*)data, &scred, &vcp, &ssp); 293 if (error) 294 break; 295 if (vcp) { 296 sdp->sd_vc = vcp;
|
296 smb_vc_unlock(vcp, 0, p);
|
297 smb_vc_unlock(vcp, 0, td); |
298 sdp->sd_level = SMBL_VC; 299 } 300 if (ssp) { 301 sdp->sd_share = ssp;
|
301 smb_share_unlock(ssp, 0, p);
|
302 smb_share_unlock(ssp, 0, td); |
303 sdp->sd_level = SMBL_SHARE; 304 } 305 break; 306 case SMBIOC_READ: case SMBIOC_WRITE: { 307 struct smbioc_rw *rwrq = (struct smbioc_rw*)data; 308 struct uio auio; 309 struct iovec iov; 310 311 if ((ssp = sdp->sd_share) == NULL) 312 return ENOTCONN; 313 iov.iov_base = rwrq->ioc_base; 314 iov.iov_len = rwrq->ioc_cnt; 315 auio.uio_iov = &iov; 316 auio.uio_iovcnt = 1; 317 auio.uio_offset = rwrq->ioc_offset; 318 auio.uio_resid = rwrq->ioc_cnt; 319 auio.uio_segflg = UIO_USERSPACE; 320 auio.uio_rw = (cmd == SMBIOC_READ) ? UIO_READ : UIO_WRITE;
|
320 auio.uio_procp = p;
|
321 auio.uio_td = td; |
322 if (cmd == SMBIOC_READ) 323 error = smb_read(ssp, rwrq->ioc_fh, &auio, &scred); 324 else 325 error = smb_write(ssp, rwrq->ioc_fh, &auio, &scred); 326 rwrq->ioc_cnt -= auio.uio_resid; 327 break; 328 } 329 default: 330 error = ENODEV; 331 } 332 return error; 333} 334 335static int 336nsmb_dev_read(dev_t dev, struct uio *uio, int flag) 337{ 338 return EACCES; 339} 340 341static int 342nsmb_dev_write(dev_t dev, struct uio *uio, int flag) 343{ 344 return EACCES; 345} 346 347static int
|
347nsmb_dev_poll(dev_t dev, int events, struct proc *p)
|
348nsmb_dev_poll(dev_t dev, int events, struct thread *td) |
349{ 350 return ENODEV; 351} 352 353static int 354nsmb_dev_load(module_t mod, int cmd, void *arg) 355{ 356 int error = 0; 357 358 switch (cmd) { 359 case MOD_LOAD: 360 error = smb_sm_init(); 361 if (error) 362 break; 363 error = smb_iod_init(); 364 if (error) { 365 smb_sm_done(); 366 break; 367 } 368 cdevsw_add(&nsmb_cdevsw); 369 nsmb_dev_tag = EVENTHANDLER_REGISTER(dev_clone, nsmb_dev_clone, 0, 1000); 370 printf("netsmb_dev: loaded\n"); 371 break; 372 case MOD_UNLOAD: 373 smb_iod_done(); 374 error = smb_sm_done(); 375 error = 0; 376 EVENTHANDLER_DEREGISTER(dev_clone, nsmb_dev_tag); 377 cdevsw_remove(&nsmb_cdevsw); 378 printf("netsmb_dev: unloaded\n"); 379 break; 380 default: 381 error = EINVAL; 382 break; 383 } 384 return error; 385} 386 387DEV_MODULE (dev_netsmb, nsmb_dev_load, 0); 388 389/* 390 * Convert a file descriptor to appropriate smb_share pointer 391 */ 392static struct file* 393nsmb_getfp(struct filedesc* fdp, int fd, int flag) 394{ 395 struct file* fp; 396 397 if (((u_int)fd) >= fdp->fd_nfiles || 398 (fp = fdp->fd_ofiles[fd]) == NULL || 399 (fp->f_flag & flag) == 0) 400 return (NULL); 401 return (fp); 402} 403 404int 405smb_dev2share(int fd, int mode, struct smb_cred *scred, 406 struct smb_share **sspp) 407{ 408 struct file *fp; 409 struct vnode *vp; 410 struct smb_dev *sdp; 411 struct smb_share *ssp; 412 dev_t dev; 413 int error; 414
|
414 if ((fp = nsmb_getfp(scred->scr_p->p_fd, fd, FREAD | FWRITE)) == NULL)
|
415 fp = nsmb_getfp(scred->scr_td->td_proc->p_fd, fd, FREAD | FWRITE); 416 if (fp == NULL) |
417 return EBADF; 418 vp = (struct vnode*)fp->f_data; 419 if (vp == NULL) 420 return EBADF; 421 dev = vn_todev(vp); 422 if (dev == NODEV) 423 return EBADF; 424 SMB_CHECKMINOR(dev); 425 ssp = sdp->sd_share; 426 if (ssp == NULL) 427 return ENOTCONN; 428 error = smb_share_get(ssp, LK_EXCLUSIVE, scred); 429 if (error) 430 return error; 431 *sspp = ssp; 432 return 0; 433} 434
|