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 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 73 MODULE_VERSION(netsmb, NSMB_VERSION); 74 75 #define SI_NAMED 0 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 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, 98 }; 99 100 101 static int 102 nsmb_dev_open(struct dev_open_args *ap) 103 { 104 cdev_t dev = ap->a_head.a_dev; 105 struct smb_dev *sdp; 106 107 sdp = SMB_GETDEV(dev); 108 if (sdp && (sdp->sd_flags & NSMBFL_OPEN)) 109 return EBUSY; 110 if (sdp == NULL) { 111 sdp = kmalloc(sizeof(*sdp), M_NSMBDEV, M_WAITOK); 112 dev->si_drv1 = (void*)sdp; 113 } 114 /* 115 * XXX: this is just crazy - make a device for an already passed 116 * device... someone should take care of it. 117 */ 118 if ((dev->si_flags & SI_NAMED) == 0) { 119 make_dev(&nsmb_ops, minor(dev), 120 ap->a_cred->cr_uid, ap->a_cred->cr_gid, 121 0700, NSMB_NAME"%d", lminor(dev)); 122 } 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 */ 129 crit_enter(); 130 sdp->sd_level = -1; 131 sdp->sd_flags |= NSMBFL_OPEN; 132 crit_exit(); 133 return 0; 134 } 135 136 static int 137 nsmb_dev_close(struct dev_close_args *ap) 138 { 139 cdev_t dev = ap->a_head.a_dev; 140 struct smb_dev *sdp; 141 struct smb_vc *vcp; 142 struct smb_share *ssp; 143 struct smb_cred scred; 144 145 SMB_CHECKMINOR(dev); 146 crit_enter(); 147 if ((sdp->sd_flags & NSMBFL_OPEN) == 0) { 148 crit_exit(); 149 return EBADF; 150 } 151 smb_makescred(&scred, curthread, NULL); 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; 163 kfree(sdp, M_NSMBDEV); 164 crit_exit(); 165 return 0; 166 } 167 168 169 static int 170 nsmb_dev_ioctl(struct dev_ioctl_args *ap) 171 { 172 cdev_t dev = ap->a_head.a_dev; 173 caddr_t data = ap->a_data; 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; 183 184 smb_makescred(&scred, NULL, ap->a_cred); 185 switch (ap->a_cmd) { 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; 194 smb_vc_unlock(vcp, 0); 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; 207 smb_share_unlock(ssp, 0); 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; 236 smb_vc_ref(vcp); 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; 254 smb_share_ref(ssp); 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; 277 smb_vc_unlock(vcp, 0); 278 sdp->sd_level = SMBL_VC; 279 } 280 if (ssp) { 281 sdp->sd_share = ssp; 282 smb_share_unlock(ssp, 0); 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; 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) 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 } 314 315 static int 316 nsmb_dev_read(struct dev_read_args *ap) 317 { 318 return EACCES; 319 } 320 321 static int 322 nsmb_dev_write(struct dev_write_args *ap) 323 { 324 return EACCES; 325 } 326 327 static int 328 nsmb_dev_poll(struct dev_poll_args *ap) 329 { 330 return ENODEV; 331 } 332 333 static int 334 nsmb_dev_load(module_t mod, int cmd, void *arg) 335 { 336 int error = 0; 337 338 switch (cmd) { 339 case MOD_LOAD: 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 } 348 dev_ops_add(&nsmb_ops, 0, 0); 349 kprintf("netsmb_dev: loaded\n"); 350 break; 351 case MOD_UNLOAD: 352 smb_iod_done(); 353 error = smb_sm_done(); 354 error = 0; 355 dev_ops_remove(&nsmb_ops, 0, 0); 356 kprintf("netsmb_dev: unloaded\n"); 357 break; 358 default: 359 error = EINVAL; 360 break; 361 } 362 return error; 363 } 364 365 DEV_MODULE (dev_netsmb, nsmb_dev_load, 0); 366 367 int 368 smb_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; 375 cdev_t dev; 376 int error; 377 378 KKASSERT(scred->scr_td->td_proc); 379 380 fp = holdfp(scred->scr_td->td_proc->p_fd, fd, FREAD|FWRITE); 381 if (fp == NULL) 382 return EBADF; 383 384 vp = (struct vnode*)fp->f_data; 385 if (vp == NULL) { 386 error = EBADF; 387 goto done; 388 } 389 dev = vn_todev(vp); 390 if (dev == NULL) { 391 error = EBADF; 392 goto done; 393 } 394 SMB_CHECKMINOR(dev); 395 ssp = sdp->sd_share; 396 if (ssp == NULL) { 397 error = ENOTCONN; 398 goto done; 399 } 400 error = smb_share_get(ssp, LK_EXCLUSIVE, scred); 401 if (error == 0) 402 *sspp = ssp; 403 done: 404 fdrop(fp); 405 return (error); 406 } 407 408