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 * $FreeBSD$ 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/filedesc.h> 44 #include <sys/mbuf.h> 45 #include <sys/poll.h> 46 #include <sys/proc.h> 47 #include <sys/select.h> 48 #include <sys/socket.h> 49 #include <sys/socketvar.h> 50 #include <sys/sysctl.h> 51 #include <sys/uio.h> 52 #include <sys/vnode.h> 53 54 #include <net/if.h> 55 56 #include <netsmb/smb.h> 57 #include <netsmb/smb_conn.h> 58 #include <netsmb/smb_subr.h> 59 #include <netsmb/smb_dev.h> 60 61 #define SMB_GETDEV(dev) ((struct smb_dev*)(dev)->si_drv1) 62 #define SMB_CHECKMINOR(dev) do { \ 63 sdp = SMB_GETDEV(dev); \ 64 if (sdp == NULL) return ENXIO; \ 65 } while(0) 66 67 static d_open_t nsmb_dev_open; 68 static d_close_t nsmb_dev_close; 69 static d_read_t nsmb_dev_read; 70 static d_write_t nsmb_dev_write; 71 static d_ioctl_t nsmb_dev_ioctl; 72 static d_poll_t nsmb_dev_poll; 73 74 MODULE_DEPEND(netsmb, libiconv, 1, 1, 1); 75 MODULE_VERSION(netsmb, NSMB_VERSION); 76 77 static int smb_version = NSMB_VERSION; 78 79 80 SYSCTL_DECL(_net_smb); 81 SYSCTL_INT(_net_smb, OID_AUTO, version, CTLFLAG_RD, &smb_version, 0, ""); 82 83 static MALLOC_DEFINE(M_NSMBDEV, "NETSMBDEV", "NET/SMB device"); 84 85 86 /* 87 int smb_dev_queue(struct smb_dev *ndp, struct smb_rq *rqp, int prio); 88 */ 89 90 static struct cdevsw nsmb_cdevsw = { 91 /* open */ nsmb_dev_open, 92 /* close */ nsmb_dev_close, 93 /* read */ nsmb_dev_read, 94 /* write */ nsmb_dev_write, 95 /* ioctl */ nsmb_dev_ioctl, 96 /* poll */ nsmb_dev_poll, 97 /* mmap */ nommap, 98 /* strategy */ nostrategy, 99 /* name */ NSMB_NAME, 100 /* maj */ NSMB_MAJOR, 101 /* dump */ nodump, 102 /* psize */ nopsize, 103 /* flags */ 0, 104 #ifndef FB_CURRENT 105 /* bmaj */ -1 106 #endif 107 }; 108 109 static eventhandler_tag nsmb_dev_tag; 110 111 static void 112 nsmb_dev_clone(void *arg, char *name, int namelen, dev_t *dev) 113 { 114 int u; 115 116 if (*dev != NODEV) 117 return; 118 if (dev_stdclone(name, NULL, NSMB_NAME, &u) != 1) 119 return; 120 *dev = make_dev(&nsmb_cdevsw, unit2minor(u), 0, 0, 0600, 121 NSMB_NAME"%d", u); 122 } 123 124 static int 125 nsmb_dev_open(dev_t dev, int oflags, int devtype, struct thread *td) 126 { 127 struct smb_dev *sdp; 128 struct ucred *cred = td->td_ucred; 129 int s; 130 131 sdp = SMB_GETDEV(dev); 132 if (sdp && (sdp->sd_flags & NSMBFL_OPEN)) 133 return EBUSY; 134 if (sdp == NULL) { 135 sdp = malloc(sizeof(*sdp), M_NSMBDEV, 0); 136 dev->si_drv1 = (void*)sdp; 137 } 138 /* 139 * XXX: this is just crazy - make a device for an already passed device... 140 * someone should take care of it. 141 */ 142 if ((dev->si_flags & SI_NAMED) == 0) 143 make_dev(&nsmb_cdevsw, minor(dev), cred->cr_uid, cred->cr_gid, 0700, 144 NSMB_NAME"%d", dev2unit(dev)); 145 bzero(sdp, sizeof(*sdp)); 146 /* 147 STAILQ_INIT(&sdp->sd_rqlist); 148 STAILQ_INIT(&sdp->sd_rplist); 149 bzero(&sdp->sd_pollinfo, sizeof(struct selinfo)); 150 */ 151 s = splimp(); 152 sdp->sd_level = -1; 153 sdp->sd_flags |= NSMBFL_OPEN; 154 splx(s); 155 return 0; 156 } 157 158 static int 159 nsmb_dev_close(dev_t dev, int flag, int fmt, struct thread *td) 160 { 161 struct smb_dev *sdp; 162 struct smb_vc *vcp; 163 struct smb_share *ssp; 164 struct smb_cred scred; 165 int s; 166 167 SMB_CHECKMINOR(dev); 168 s = splimp(); 169 if ((sdp->sd_flags & NSMBFL_OPEN) == 0) { 170 splx(s); 171 return EBADF; 172 } 173 smb_makescred(&scred, td, NULL); 174 ssp = sdp->sd_share; 175 if (ssp != NULL) 176 smb_share_rele(ssp, &scred); 177 vcp = sdp->sd_vc; 178 if (vcp != NULL) 179 smb_vc_rele(vcp, &scred); 180 /* 181 smb_flushq(&sdp->sd_rqlist); 182 smb_flushq(&sdp->sd_rplist); 183 */ 184 dev->si_drv1 = NULL; 185 free(sdp, M_NSMBDEV); 186 destroy_dev(dev); 187 splx(s); 188 return 0; 189 } 190 191 192 static int 193 nsmb_dev_ioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct thread *td) 194 { 195 struct smb_dev *sdp; 196 struct smb_vc *vcp; 197 struct smb_share *ssp; 198 struct smb_cred scred; 199 int error = 0; 200 201 SMB_CHECKMINOR(dev); 202 if ((sdp->sd_flags & NSMBFL_OPEN) == 0) 203 return EBADF; 204 205 smb_makescred(&scred, td, NULL); 206 switch (cmd) { 207 case SMBIOC_OPENSESSION: 208 if (sdp->sd_vc) 209 return EISCONN; 210 error = smb_usr_opensession((struct smbioc_ossn*)data, 211 &scred, &vcp); 212 if (error) 213 break; 214 sdp->sd_vc = vcp; 215 smb_vc_unlock(vcp, 0, td); 216 sdp->sd_level = SMBL_VC; 217 break; 218 case SMBIOC_OPENSHARE: 219 if (sdp->sd_share) 220 return EISCONN; 221 if (sdp->sd_vc == NULL) 222 return ENOTCONN; 223 error = smb_usr_openshare(sdp->sd_vc, 224 (struct smbioc_oshare*)data, &scred, &ssp); 225 if (error) 226 break; 227 sdp->sd_share = ssp; 228 smb_share_unlock(ssp, 0, td); 229 sdp->sd_level = SMBL_SHARE; 230 break; 231 case SMBIOC_REQUEST: 232 if (sdp->sd_share == NULL) 233 return ENOTCONN; 234 error = smb_usr_simplerequest(sdp->sd_share, 235 (struct smbioc_rq*)data, &scred); 236 break; 237 case SMBIOC_T2RQ: 238 if (sdp->sd_share == NULL) 239 return ENOTCONN; 240 error = smb_usr_t2request(sdp->sd_share, 241 (struct smbioc_t2rq*)data, &scred); 242 break; 243 case SMBIOC_SETFLAGS: { 244 struct smbioc_flags *fl = (struct smbioc_flags*)data; 245 int on; 246 247 if (fl->ioc_level == SMBL_VC) { 248 if (fl->ioc_mask & SMBV_PERMANENT) { 249 on = fl->ioc_flags & SMBV_PERMANENT; 250 if ((vcp = sdp->sd_vc) == NULL) 251 return ENOTCONN; 252 error = smb_vc_get(vcp, LK_EXCLUSIVE, &scred); 253 if (error) 254 break; 255 if (on && (vcp->obj.co_flags & SMBV_PERMANENT) == 0) { 256 vcp->obj.co_flags |= SMBV_PERMANENT; 257 smb_vc_ref(vcp); 258 } else if (!on && (vcp->obj.co_flags & SMBV_PERMANENT)) { 259 vcp->obj.co_flags &= ~SMBV_PERMANENT; 260 smb_vc_rele(vcp, &scred); 261 } 262 smb_vc_put(vcp, &scred); 263 } else 264 error = EINVAL; 265 } else if (fl->ioc_level == SMBL_SHARE) { 266 if (fl->ioc_mask & SMBS_PERMANENT) { 267 on = fl->ioc_flags & SMBS_PERMANENT; 268 if ((ssp = sdp->sd_share) == NULL) 269 return ENOTCONN; 270 error = smb_share_get(ssp, LK_EXCLUSIVE, &scred); 271 if (error) 272 break; 273 if (on && (ssp->obj.co_flags & SMBS_PERMANENT) == 0) { 274 ssp->obj.co_flags |= SMBS_PERMANENT; 275 smb_share_ref(ssp); 276 } else if (!on && (ssp->obj.co_flags & SMBS_PERMANENT)) { 277 ssp->obj.co_flags &= ~SMBS_PERMANENT; 278 smb_share_rele(ssp, &scred); 279 } 280 smb_share_put(ssp, &scred); 281 } else 282 error = EINVAL; 283 break; 284 } else 285 error = EINVAL; 286 break; 287 } 288 case SMBIOC_LOOKUP: 289 if (sdp->sd_vc || sdp->sd_share) 290 return EISCONN; 291 vcp = NULL; 292 ssp = NULL; 293 error = smb_usr_lookup((struct smbioc_lookup*)data, &scred, &vcp, &ssp); 294 if (error) 295 break; 296 if (vcp) { 297 sdp->sd_vc = vcp; 298 smb_vc_unlock(vcp, 0, td); 299 sdp->sd_level = SMBL_VC; 300 } 301 if (ssp) { 302 sdp->sd_share = ssp; 303 smb_share_unlock(ssp, 0, td); 304 sdp->sd_level = SMBL_SHARE; 305 } 306 break; 307 case SMBIOC_READ: case SMBIOC_WRITE: { 308 struct smbioc_rw *rwrq = (struct smbioc_rw*)data; 309 struct uio auio; 310 struct iovec iov; 311 312 if ((ssp = sdp->sd_share) == NULL) 313 return ENOTCONN; 314 iov.iov_base = rwrq->ioc_base; 315 iov.iov_len = rwrq->ioc_cnt; 316 auio.uio_iov = &iov; 317 auio.uio_iovcnt = 1; 318 auio.uio_offset = rwrq->ioc_offset; 319 auio.uio_resid = rwrq->ioc_cnt; 320 auio.uio_segflg = UIO_USERSPACE; 321 auio.uio_rw = (cmd == SMBIOC_READ) ? UIO_READ : UIO_WRITE; 322 auio.uio_td = td; 323 if (cmd == SMBIOC_READ) 324 error = smb_read(ssp, rwrq->ioc_fh, &auio, &scred); 325 else 326 error = smb_write(ssp, rwrq->ioc_fh, &auio, &scred); 327 rwrq->ioc_cnt -= auio.uio_resid; 328 break; 329 } 330 default: 331 error = ENODEV; 332 } 333 return error; 334 } 335 336 static int 337 nsmb_dev_read(dev_t dev, struct uio *uio, int flag) 338 { 339 return EACCES; 340 } 341 342 static int 343 nsmb_dev_write(dev_t dev, struct uio *uio, int flag) 344 { 345 return EACCES; 346 } 347 348 static int 349 nsmb_dev_poll(dev_t dev, int events, struct thread *td) 350 { 351 return ENODEV; 352 } 353 354 static int 355 nsmb_dev_load(module_t mod, int cmd, void *arg) 356 { 357 int error = 0; 358 359 switch (cmd) { 360 case MOD_LOAD: 361 error = smb_sm_init(); 362 if (error) 363 break; 364 error = smb_iod_init(); 365 if (error) { 366 smb_sm_done(); 367 break; 368 } 369 cdevsw_add(&nsmb_cdevsw); 370 nsmb_dev_tag = EVENTHANDLER_REGISTER(dev_clone, nsmb_dev_clone, 0, 1000); 371 printf("netsmb_dev: loaded\n"); 372 break; 373 case MOD_UNLOAD: 374 smb_iod_done(); 375 error = smb_sm_done(); 376 error = 0; 377 EVENTHANDLER_DEREGISTER(dev_clone, nsmb_dev_tag); 378 cdevsw_remove(&nsmb_cdevsw); 379 printf("netsmb_dev: unloaded\n"); 380 break; 381 default: 382 error = EINVAL; 383 break; 384 } 385 return error; 386 } 387 388 DEV_MODULE (dev_netsmb, nsmb_dev_load, 0); 389 390 /* 391 * Convert a file descriptor to appropriate smb_share pointer 392 */ 393 static struct file* 394 nsmb_getfp(struct filedesc* fdp, int fd, int flag) 395 { 396 struct file* fp; 397 398 FILEDESC_LOCK(fdp); 399 if (((u_int)fd) >= fdp->fd_nfiles || 400 (fp = fdp->fd_ofiles[fd]) == NULL || 401 (fp->f_flag & flag) == 0) { 402 FILEDESC_UNLOCK(fdp); 403 return (NULL); 404 } 405 fhold(fp); 406 FILEDESC_UNLOCK(fdp); 407 return (fp); 408 } 409 410 int 411 smb_dev2share(int fd, int mode, struct smb_cred *scred, 412 struct smb_share **sspp) 413 { 414 struct file *fp; 415 struct vnode *vp; 416 struct smb_dev *sdp; 417 struct smb_share *ssp; 418 dev_t dev; 419 int error; 420 421 fp = nsmb_getfp(scred->scr_td->td_proc->p_fd, fd, FREAD | FWRITE); 422 if (fp == NULL) 423 return EBADF; 424 vp = fp->f_data; 425 if (vp == NULL) { 426 fdrop(fp, curthread); 427 return EBADF; 428 } 429 dev = vn_todev(vp); 430 if (dev == NODEV) { 431 fdrop(fp, curthread); 432 return EBADF; 433 } 434 SMB_CHECKMINOR(dev); 435 ssp = sdp->sd_share; 436 if (ssp == NULL) { 437 fdrop(fp, curthread); 438 return ENOTCONN; 439 } 440 error = smb_share_get(ssp, LK_EXCLUSIVE, scred); 441 if (error == 0) 442 *sspp = ssp; 443 fdrop(fp, curthread); 444 return error; 445 } 446 447