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/proc.h> 44 #include <sys/select.h> 45 #include <sys/socket.h> 46 #include <sys/socketvar.h> 47 #include <sys/sysctl.h> 48 #include <sys/uio.h> 49 #include <sys/vnode.h> 50 #include <sys/thread2.h> 51 #include <sys/devfs.h> 52 #include <net/if.h> 53 54 #include "smb.h" 55 #include "smb_conn.h" 56 #include "smb_subr.h" 57 #include "smb_dev.h" 58 59 #define SMB_GETDEV(dev) ((struct smb_dev*)(dev)->si_drv1) 60 #define SMB_CHECKMINOR(dev) do { \ 61 sdp = SMB_GETDEV(dev); \ 62 if (sdp == NULL) return ENXIO; \ 63 } while(0) 64 65 static d_open_t nsmb_dev_open; 66 static d_close_t nsmb_dev_close; 67 static d_read_t nsmb_dev_read; 68 static d_write_t nsmb_dev_write; 69 static d_ioctl_t nsmb_dev_ioctl; 70 static d_clone_t nsmbclone; 71 DEVFS_DECLARE_CLONE_BITMAP(nsmb); 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 }; 98 99 100 static int 101 nsmb_dev_open(struct dev_open_args *ap) 102 { 103 cdev_t dev = ap->a_head.a_dev; 104 struct smb_dev *sdp; 105 106 sdp = SMB_GETDEV(dev); 107 if (sdp && (sdp->sd_flags & NSMBFL_OPEN)) 108 return EBUSY; 109 if (sdp == NULL) { 110 sdp = kmalloc(sizeof(*sdp), M_NSMBDEV, M_WAITOK); 111 dev->si_drv1 = (void*)sdp; 112 } 113 /* 114 * XXX: this is just crazy - make a device for an already passed 115 * device... someone should take care of it. 116 */ 117 #if 0 118 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 #endif 124 bzero(sdp, sizeof(*sdp)); 125 /* 126 STAILQ_INIT(&sdp->sd_rqlist); 127 STAILQ_INIT(&sdp->sd_rplist); 128 bzero(&sdp->sd_pollinfo, sizeof(struct selinfo)); 129 */ 130 crit_enter(); 131 sdp->sd_level = -1; 132 sdp->sd_flags |= NSMBFL_OPEN; 133 crit_exit(); 134 return 0; 135 } 136 137 static int 138 nsmb_dev_close(struct dev_close_args *ap) 139 { 140 cdev_t dev = ap->a_head.a_dev; 141 struct smb_dev *sdp; 142 struct smb_vc *vcp; 143 struct smb_share *ssp; 144 struct smb_cred scred; 145 146 SMB_CHECKMINOR(dev); 147 crit_enter(); 148 if ((sdp->sd_flags & NSMBFL_OPEN) == 0) { 149 crit_exit(); 150 return EBADF; 151 } 152 smb_makescred(&scred, curthread, NULL); 153 ssp = sdp->sd_share; 154 if (ssp != NULL) 155 smb_share_rele(ssp, &scred); 156 vcp = sdp->sd_vc; 157 if (vcp != NULL) 158 smb_vc_rele(vcp, &scred); 159 /* 160 smb_flushq(&sdp->sd_rqlist); 161 smb_flushq(&sdp->sd_rplist); 162 */ 163 dev->si_drv1 = NULL; 164 kfree(sdp, M_NSMBDEV); 165 crit_exit(); 166 devfs_clone_bitmap_put(&DEVFS_CLONE_BITMAP(nsmb), dev->si_uminor); 167 destroy_dev(dev); 168 return 0; 169 } 170 171 172 static int 173 nsmb_dev_ioctl(struct dev_ioctl_args *ap) 174 { 175 cdev_t dev = ap->a_head.a_dev; 176 caddr_t data = ap->a_data; 177 struct smb_dev *sdp; 178 struct smb_vc *vcp; 179 struct smb_share *ssp; 180 struct smb_cred scred; 181 int error = 0; 182 183 SMB_CHECKMINOR(dev); 184 if ((sdp->sd_flags & NSMBFL_OPEN) == 0) 185 return EBADF; 186 187 smb_makescred(&scred, NULL, ap->a_cred); 188 switch (ap->a_cmd) { 189 case SMBIOC_OPENSESSION: 190 if (sdp->sd_vc) 191 return EISCONN; 192 error = smb_usr_opensession((struct smbioc_ossn*)data, 193 &scred, &vcp); 194 if (error) 195 break; 196 sdp->sd_vc = vcp; 197 smb_vc_unlock(vcp, 0); 198 sdp->sd_level = SMBL_VC; 199 break; 200 case SMBIOC_OPENSHARE: 201 if (sdp->sd_share) 202 return EISCONN; 203 if (sdp->sd_vc == NULL) 204 return ENOTCONN; 205 error = smb_usr_openshare(sdp->sd_vc, 206 (struct smbioc_oshare*)data, &scred, &ssp); 207 if (error) 208 break; 209 sdp->sd_share = ssp; 210 smb_share_unlock(ssp, 0); 211 sdp->sd_level = SMBL_SHARE; 212 break; 213 case SMBIOC_REQUEST: 214 if (sdp->sd_share == NULL) 215 return ENOTCONN; 216 error = smb_usr_simplerequest(sdp->sd_share, 217 (struct smbioc_rq*)data, &scred); 218 break; 219 case SMBIOC_T2RQ: 220 if (sdp->sd_share == NULL) 221 return ENOTCONN; 222 error = smb_usr_t2request(sdp->sd_share, 223 (struct smbioc_t2rq*)data, &scred); 224 break; 225 case SMBIOC_SETFLAGS: { 226 struct smbioc_flags *fl = (struct smbioc_flags*)data; 227 int on; 228 229 if (fl->ioc_level == SMBL_VC) { 230 if (fl->ioc_mask & SMBV_PERMANENT) { 231 on = fl->ioc_flags & SMBV_PERMANENT; 232 if ((vcp = sdp->sd_vc) == NULL) 233 return ENOTCONN; 234 error = smb_vc_get(vcp, LK_EXCLUSIVE, &scred); 235 if (error) 236 break; 237 if (on && (vcp->obj.co_flags & SMBV_PERMANENT) == 0) { 238 vcp->obj.co_flags |= SMBV_PERMANENT; 239 smb_vc_ref(vcp); 240 } else if (!on && (vcp->obj.co_flags & SMBV_PERMANENT)) { 241 vcp->obj.co_flags &= ~SMBV_PERMANENT; 242 smb_vc_rele(vcp, &scred); 243 } 244 smb_vc_put(vcp, &scred); 245 } else 246 error = EINVAL; 247 } else if (fl->ioc_level == SMBL_SHARE) { 248 if (fl->ioc_mask & SMBS_PERMANENT) { 249 on = fl->ioc_flags & SMBS_PERMANENT; 250 if ((ssp = sdp->sd_share) == NULL) 251 return ENOTCONN; 252 error = smb_share_get(ssp, LK_EXCLUSIVE, &scred); 253 if (error) 254 break; 255 if (on && (ssp->obj.co_flags & SMBS_PERMANENT) == 0) { 256 ssp->obj.co_flags |= SMBS_PERMANENT; 257 smb_share_ref(ssp); 258 } else if (!on && (ssp->obj.co_flags & SMBS_PERMANENT)) { 259 ssp->obj.co_flags &= ~SMBS_PERMANENT; 260 smb_share_rele(ssp, &scred); 261 } 262 smb_share_put(ssp, &scred); 263 } else 264 error = EINVAL; 265 break; 266 } else 267 error = EINVAL; 268 break; 269 } 270 case SMBIOC_LOOKUP: 271 if (sdp->sd_vc || sdp->sd_share) 272 return EISCONN; 273 vcp = NULL; 274 ssp = NULL; 275 error = smb_usr_lookup((struct smbioc_lookup*)data, &scred, &vcp, &ssp); 276 if (error) 277 break; 278 if (vcp) { 279 sdp->sd_vc = vcp; 280 smb_vc_unlock(vcp, 0); 281 sdp->sd_level = SMBL_VC; 282 } 283 if (ssp) { 284 sdp->sd_share = ssp; 285 smb_share_unlock(ssp, 0); 286 sdp->sd_level = SMBL_SHARE; 287 } 288 break; 289 case SMBIOC_READ: case SMBIOC_WRITE: { 290 struct smbioc_rw *rwrq = (struct smbioc_rw*)data; 291 struct uio auio; 292 struct iovec iov; 293 294 if ((ssp = sdp->sd_share) == NULL) 295 return ENOTCONN; 296 iov.iov_base = rwrq->ioc_base; 297 iov.iov_len = rwrq->ioc_cnt; 298 auio.uio_iov = &iov; 299 auio.uio_iovcnt = 1; 300 auio.uio_offset = rwrq->ioc_offset; 301 auio.uio_resid = rwrq->ioc_cnt; 302 auio.uio_segflg = UIO_USERSPACE; 303 auio.uio_rw = (ap->a_cmd == SMBIOC_READ) ? UIO_READ : UIO_WRITE; 304 auio.uio_td = curthread; 305 if (ap->a_cmd == SMBIOC_READ) 306 error = smb_read(ssp, rwrq->ioc_fh, &auio, &scred); 307 else 308 error = smb_write(ssp, rwrq->ioc_fh, &auio, &scred); 309 rwrq->ioc_cnt -= auio.uio_resid; 310 break; 311 } 312 default: 313 error = ENODEV; 314 } 315 return error; 316 } 317 318 static int 319 nsmb_dev_read(struct dev_read_args *ap) 320 { 321 return EACCES; 322 } 323 324 static int 325 nsmb_dev_write(struct dev_write_args *ap) 326 { 327 return EACCES; 328 } 329 330 static int 331 nsmbclone(struct dev_clone_args *ap) 332 { 333 int unit; 334 335 unit = devfs_clone_bitmap_get(&DEVFS_CLONE_BITMAP(nsmb), 0); 336 ap->a_dev = make_only_dev(&nsmb_ops, unit, 0, 0, 0600, 337 NSMB_NAME"%d", unit); 338 339 return 0; 340 } 341 342 static int 343 nsmb_dev_load(module_t mod, int cmd, void *arg) 344 { 345 int error = 0; 346 347 switch (cmd) { 348 case MOD_LOAD: 349 error = smb_sm_init(); 350 if (error) 351 break; 352 error = smb_iod_init(); 353 if (error) { 354 smb_sm_done(); 355 break; 356 } 357 make_autoclone_dev(&nsmb_ops, &DEVFS_CLONE_BITMAP(nsmb), 358 nsmbclone, 0, 0, 0700, NSMB_NAME); 359 360 kprintf("netsmb_dev: loaded\n"); 361 break; 362 case MOD_UNLOAD: 363 smb_iod_done(); 364 error = smb_sm_done(); 365 error = 0; 366 devfs_clone_handler_del(NSMB_NAME); 367 dev_ops_remove_all(&nsmb_ops); 368 devfs_clone_bitmap_uninit(&DEVFS_CLONE_BITMAP(nsmb)); 369 kprintf("netsmb_dev: unloaded\n"); 370 break; 371 default: 372 error = EINVAL; 373 break; 374 } 375 return error; 376 } 377 378 DEV_MODULE (dev_netsmb, nsmb_dev_load, 0); 379 380 int 381 smb_dev2share(int fd, int mode, struct smb_cred *scred, 382 struct smb_share **sspp) 383 { 384 struct file *fp; 385 struct vnode *vp; 386 struct smb_dev *sdp; 387 struct smb_share *ssp; 388 cdev_t dev; 389 int error; 390 391 KKASSERT(scred->scr_td->td_proc); 392 393 fp = holdfp(scred->scr_td->td_proc->p_fd, fd, FREAD|FWRITE); 394 if (fp == NULL) 395 return EBADF; 396 397 vp = (struct vnode*)fp->f_data; 398 if (vp == NULL) { 399 error = EBADF; 400 goto done; 401 } 402 dev = vn_todev(vp); 403 if (dev == NULL) { 404 error = EBADF; 405 goto done; 406 } 407 SMB_CHECKMINOR(dev); 408 ssp = sdp->sd_share; 409 if (ssp == NULL) { 410 error = ENOTCONN; 411 goto done; 412 } 413 error = smb_share_get(ssp, LK_EXCLUSIVE, scred); 414 if (error == 0) 415 *sspp = ssp; 416 done: 417 fdrop(fp); 418 return (error); 419 } 420 421