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 $ 33 * $DragonFly: src/sys/netproto/smb/smb_dev.c,v 1.18 2007/05/08 02:31:42 dillon Exp $ 34 */ 35 #include <sys/param.h> 36 #include <sys/kernel.h> 37 #include <sys/systm.h> 38 #include <sys/conf.h> 39 #include <sys/device.h> 40 #include <sys/fcntl.h> 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> 51 #include <sys/thread2.h> 52 #include <sys/devfs.h> 53 #include <net/if.h> 54 55 #include "smb.h" 56 #include "smb_conn.h" 57 #include "smb_subr.h" 58 #include "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 66 static d_open_t nsmb_dev_open; 67 static d_close_t nsmb_dev_close; 68 static d_read_t nsmb_dev_read; 69 static d_write_t nsmb_dev_write; 70 static d_ioctl_t nsmb_dev_ioctl; 71 static d_poll_t nsmb_dev_poll; 72 static d_clone_t nsmbclone; 73 DEVFS_DECLARE_CLONE_BITMAP(nsmb); 74 75 MODULE_VERSION(netsmb, NSMB_VERSION); 76 77 #define SI_NAMED 0 78 79 static int smb_version = NSMB_VERSION; 80 81 82 SYSCTL_DECL(_net_smb); 83 SYSCTL_INT(_net_smb, OID_AUTO, version, CTLFLAG_RD, &smb_version, 0, ""); 84 85 static MALLOC_DEFINE(M_NSMBDEV, "NETSMBDEV", "NET/SMB device"); 86 87 88 /* 89 int smb_dev_queue(struct smb_dev *ndp, struct smb_rq *rqp, int prio); 90 */ 91 92 static struct dev_ops nsmb_ops = { 93 { NSMB_NAME, NSMB_MAJOR, 0 }, 94 .d_open = nsmb_dev_open, 95 .d_close = nsmb_dev_close, 96 .d_read = nsmb_dev_read, 97 .d_write = nsmb_dev_write, 98 .d_ioctl = nsmb_dev_ioctl, 99 .d_poll = nsmb_dev_poll, 100 }; 101 102 103 static int 104 nsmb_dev_open(struct dev_open_args *ap) 105 { 106 cdev_t dev = ap->a_head.a_dev; 107 struct smb_dev *sdp; 108 109 sdp = SMB_GETDEV(dev); 110 if (sdp && (sdp->sd_flags & NSMBFL_OPEN)) 111 return EBUSY; 112 if (sdp == NULL) { 113 sdp = kmalloc(sizeof(*sdp), M_NSMBDEV, M_WAITOK); 114 dev->si_drv1 = (void*)sdp; 115 } 116 /* 117 * XXX: this is just crazy - make a device for an already passed 118 * device... someone should take care of it. 119 */ 120 #if 0 121 if ((dev->si_flags & SI_NAMED) == 0) { 122 make_dev(&nsmb_ops, minor(dev), 123 ap->a_cred->cr_uid, ap->a_cred->cr_gid, 124 0700, NSMB_NAME"%d", lminor(dev)); 125 } 126 #endif 127 bzero(sdp, sizeof(*sdp)); 128 /* 129 STAILQ_INIT(&sdp->sd_rqlist); 130 STAILQ_INIT(&sdp->sd_rplist); 131 bzero(&sdp->sd_pollinfo, sizeof(struct selinfo)); 132 */ 133 crit_enter(); 134 sdp->sd_level = -1; 135 sdp->sd_flags |= NSMBFL_OPEN; 136 crit_exit(); 137 return 0; 138 } 139 140 static int 141 nsmb_dev_close(struct dev_close_args *ap) 142 { 143 cdev_t dev = ap->a_head.a_dev; 144 struct smb_dev *sdp; 145 struct smb_vc *vcp; 146 struct smb_share *ssp; 147 struct smb_cred scred; 148 149 SMB_CHECKMINOR(dev); 150 crit_enter(); 151 if ((sdp->sd_flags & NSMBFL_OPEN) == 0) { 152 crit_exit(); 153 return EBADF; 154 } 155 smb_makescred(&scred, curthread, NULL); 156 ssp = sdp->sd_share; 157 if (ssp != NULL) 158 smb_share_rele(ssp, &scred); 159 vcp = sdp->sd_vc; 160 if (vcp != NULL) 161 smb_vc_rele(vcp, &scred); 162 /* 163 smb_flushq(&sdp->sd_rqlist); 164 smb_flushq(&sdp->sd_rplist); 165 */ 166 dev->si_drv1 = NULL; 167 kfree(sdp, M_NSMBDEV); 168 crit_exit(); 169 devfs_clone_bitmap_put(&DEVFS_CLONE_BITMAP(nsmb), dev->si_uminor); 170 destroy_dev(dev); 171 return 0; 172 } 173 174 175 static int 176 nsmb_dev_ioctl(struct dev_ioctl_args *ap) 177 { 178 cdev_t dev = ap->a_head.a_dev; 179 caddr_t data = ap->a_data; 180 struct smb_dev *sdp; 181 struct smb_vc *vcp; 182 struct smb_share *ssp; 183 struct smb_cred scred; 184 int error = 0; 185 186 SMB_CHECKMINOR(dev); 187 if ((sdp->sd_flags & NSMBFL_OPEN) == 0) 188 return EBADF; 189 190 smb_makescred(&scred, NULL, ap->a_cred); 191 switch (ap->a_cmd) { 192 case SMBIOC_OPENSESSION: 193 if (sdp->sd_vc) 194 return EISCONN; 195 error = smb_usr_opensession((struct smbioc_ossn*)data, 196 &scred, &vcp); 197 if (error) 198 break; 199 sdp->sd_vc = vcp; 200 smb_vc_unlock(vcp, 0); 201 sdp->sd_level = SMBL_VC; 202 break; 203 case SMBIOC_OPENSHARE: 204 if (sdp->sd_share) 205 return EISCONN; 206 if (sdp->sd_vc == NULL) 207 return ENOTCONN; 208 error = smb_usr_openshare(sdp->sd_vc, 209 (struct smbioc_oshare*)data, &scred, &ssp); 210 if (error) 211 break; 212 sdp->sd_share = ssp; 213 smb_share_unlock(ssp, 0); 214 sdp->sd_level = SMBL_SHARE; 215 break; 216 case SMBIOC_REQUEST: 217 if (sdp->sd_share == NULL) 218 return ENOTCONN; 219 error = smb_usr_simplerequest(sdp->sd_share, 220 (struct smbioc_rq*)data, &scred); 221 break; 222 case SMBIOC_T2RQ: 223 if (sdp->sd_share == NULL) 224 return ENOTCONN; 225 error = smb_usr_t2request(sdp->sd_share, 226 (struct smbioc_t2rq*)data, &scred); 227 break; 228 case SMBIOC_SETFLAGS: { 229 struct smbioc_flags *fl = (struct smbioc_flags*)data; 230 int on; 231 232 if (fl->ioc_level == SMBL_VC) { 233 if (fl->ioc_mask & SMBV_PERMANENT) { 234 on = fl->ioc_flags & SMBV_PERMANENT; 235 if ((vcp = sdp->sd_vc) == NULL) 236 return ENOTCONN; 237 error = smb_vc_get(vcp, LK_EXCLUSIVE, &scred); 238 if (error) 239 break; 240 if (on && (vcp->obj.co_flags & SMBV_PERMANENT) == 0) { 241 vcp->obj.co_flags |= SMBV_PERMANENT; 242 smb_vc_ref(vcp); 243 } else if (!on && (vcp->obj.co_flags & SMBV_PERMANENT)) { 244 vcp->obj.co_flags &= ~SMBV_PERMANENT; 245 smb_vc_rele(vcp, &scred); 246 } 247 smb_vc_put(vcp, &scred); 248 } else 249 error = EINVAL; 250 } else if (fl->ioc_level == SMBL_SHARE) { 251 if (fl->ioc_mask & SMBS_PERMANENT) { 252 on = fl->ioc_flags & SMBS_PERMANENT; 253 if ((ssp = sdp->sd_share) == NULL) 254 return ENOTCONN; 255 error = smb_share_get(ssp, LK_EXCLUSIVE, &scred); 256 if (error) 257 break; 258 if (on && (ssp->obj.co_flags & SMBS_PERMANENT) == 0) { 259 ssp->obj.co_flags |= SMBS_PERMANENT; 260 smb_share_ref(ssp); 261 } else if (!on && (ssp->obj.co_flags & SMBS_PERMANENT)) { 262 ssp->obj.co_flags &= ~SMBS_PERMANENT; 263 smb_share_rele(ssp, &scred); 264 } 265 smb_share_put(ssp, &scred); 266 } else 267 error = EINVAL; 268 break; 269 } else 270 error = EINVAL; 271 break; 272 } 273 case SMBIOC_LOOKUP: 274 if (sdp->sd_vc || sdp->sd_share) 275 return EISCONN; 276 vcp = NULL; 277 ssp = NULL; 278 error = smb_usr_lookup((struct smbioc_lookup*)data, &scred, &vcp, &ssp); 279 if (error) 280 break; 281 if (vcp) { 282 sdp->sd_vc = vcp; 283 smb_vc_unlock(vcp, 0); 284 sdp->sd_level = SMBL_VC; 285 } 286 if (ssp) { 287 sdp->sd_share = ssp; 288 smb_share_unlock(ssp, 0); 289 sdp->sd_level = SMBL_SHARE; 290 } 291 break; 292 case SMBIOC_READ: case SMBIOC_WRITE: { 293 struct smbioc_rw *rwrq = (struct smbioc_rw*)data; 294 struct uio auio; 295 struct iovec iov; 296 297 if ((ssp = sdp->sd_share) == NULL) 298 return ENOTCONN; 299 iov.iov_base = rwrq->ioc_base; 300 iov.iov_len = rwrq->ioc_cnt; 301 auio.uio_iov = &iov; 302 auio.uio_iovcnt = 1; 303 auio.uio_offset = rwrq->ioc_offset; 304 auio.uio_resid = rwrq->ioc_cnt; 305 auio.uio_segflg = UIO_USERSPACE; 306 auio.uio_rw = (ap->a_cmd == SMBIOC_READ) ? UIO_READ : UIO_WRITE; 307 auio.uio_td = curthread; 308 if (ap->a_cmd == SMBIOC_READ) 309 error = smb_read(ssp, rwrq->ioc_fh, &auio, &scred); 310 else 311 error = smb_write(ssp, rwrq->ioc_fh, &auio, &scred); 312 rwrq->ioc_cnt -= auio.uio_resid; 313 break; 314 } 315 default: 316 error = ENODEV; 317 } 318 return error; 319 } 320 321 static int 322 nsmb_dev_read(struct dev_read_args *ap) 323 { 324 return EACCES; 325 } 326 327 static int 328 nsmb_dev_write(struct dev_write_args *ap) 329 { 330 return EACCES; 331 } 332 333 static int 334 nsmb_dev_poll(struct dev_poll_args *ap) 335 { 336 return ENODEV; 337 } 338 339 static int 340 nsmbclone(struct dev_clone_args *ap) 341 { 342 int unit; 343 344 unit = devfs_clone_bitmap_get(&DEVFS_CLONE_BITMAP(nsmb), 0); 345 ap->a_dev = make_only_dev(&nsmb_ops, unit, 0, 0, 0600, 346 NSMB_NAME"%d", unit); 347 348 return 0; 349 } 350 351 static int 352 nsmb_dev_load(module_t mod, int cmd, void *arg) 353 { 354 int error = 0; 355 356 switch (cmd) { 357 case MOD_LOAD: 358 error = smb_sm_init(); 359 if (error) 360 break; 361 error = smb_iod_init(); 362 if (error) { 363 smb_sm_done(); 364 break; 365 } 366 make_autoclone_dev(&nsmb_ops, &DEVFS_CLONE_BITMAP(nsmb), 367 nsmbclone, 0, 0, 0700, NSMB_NAME); 368 369 kprintf("netsmb_dev: loaded\n"); 370 break; 371 case MOD_UNLOAD: 372 smb_iod_done(); 373 error = smb_sm_done(); 374 error = 0; 375 devfs_clone_handler_del(NSMB_NAME); 376 dev_ops_remove_all(&nsmb_ops); 377 devfs_clone_bitmap_uninit(&DEVFS_CLONE_BITMAP(nsmb)); 378 kprintf("netsmb_dev: unloaded\n"); 379 break; 380 default: 381 error = EINVAL; 382 break; 383 } 384 return error; 385 } 386 387 DEV_MODULE (dev_netsmb, nsmb_dev_load, 0); 388 389 int 390 smb_dev2share(int fd, int mode, struct smb_cred *scred, 391 struct smb_share **sspp) 392 { 393 struct file *fp; 394 struct vnode *vp; 395 struct smb_dev *sdp; 396 struct smb_share *ssp; 397 cdev_t dev; 398 int error; 399 400 KKASSERT(scred->scr_td->td_proc); 401 402 fp = holdfp(scred->scr_td->td_proc->p_fd, fd, FREAD|FWRITE); 403 if (fp == NULL) 404 return EBADF; 405 406 vp = (struct vnode*)fp->f_data; 407 if (vp == NULL) { 408 error = EBADF; 409 goto done; 410 } 411 dev = vn_todev(vp); 412 if (dev == NULL) { 413 error = EBADF; 414 goto done; 415 } 416 SMB_CHECKMINOR(dev); 417 ssp = sdp->sd_share; 418 if (ssp == NULL) { 419 error = ENOTCONN; 420 goto done; 421 } 422 error = smb_share_get(ssp, LK_EXCLUSIVE, scred); 423 if (error == 0) 424 *sspp = ssp; 425 done: 426 fdrop(fp); 427 return (error); 428 } 429 430