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/socket.h> 45 #include <sys/socketvar.h> 46 #include <sys/sysctl.h> 47 #include <sys/uio.h> 48 #include <sys/vnode.h> 49 #include <sys/thread2.h> 50 #include <sys/devfs.h> 51 #include <net/if.h> 52 53 #include "smb.h" 54 #include "smb_conn.h" 55 #include "smb_subr.h" 56 #include "smb_dev.h" 57 58 #define SMB_GETDEV(dev) ((struct smb_dev*)(dev)->si_drv1) 59 #define SMB_CHECKMINOR(dev) do { \ 60 sdp = SMB_GETDEV(dev); \ 61 if (sdp == NULL) return ENXIO; \ 62 } while(0) 63 64 static d_open_t nsmb_dev_open; 65 static d_close_t nsmb_dev_close; 66 static d_read_t nsmb_dev_read; 67 static d_write_t nsmb_dev_write; 68 static d_ioctl_t nsmb_dev_ioctl; 69 static d_clone_t nsmbclone; 70 DEVFS_DECLARE_CLONE_BITMAP(nsmb); 71 72 MODULE_VERSION(netsmb, NSMB_VERSION); 73 74 #define SI_NAMED 0 75 76 static int smb_version = NSMB_VERSION; 77 78 79 SYSCTL_DECL(_net_smb); 80 SYSCTL_INT(_net_smb, OID_AUTO, version, CTLFLAG_RD, &smb_version, 0, ""); 81 82 static MALLOC_DEFINE(M_NSMBDEV, "NETSMBDEV", "NET/SMB device"); 83 84 85 /* 86 int smb_dev_queue(struct smb_dev *ndp, struct smb_rq *rqp, int prio); 87 */ 88 89 static struct dev_ops nsmb_ops = { 90 { NSMB_NAME, NSMB_MAJOR, 0 }, 91 .d_open = nsmb_dev_open, 92 .d_close = nsmb_dev_close, 93 .d_read = nsmb_dev_read, 94 .d_write = nsmb_dev_write, 95 .d_ioctl = nsmb_dev_ioctl, 96 }; 97 98 99 static int 100 nsmb_dev_open(struct dev_open_args *ap) 101 { 102 cdev_t dev = ap->a_head.a_dev; 103 struct smb_dev *sdp; 104 105 sdp = SMB_GETDEV(dev); 106 if (sdp && (sdp->sd_flags & NSMBFL_OPEN)) 107 return EBUSY; 108 if (sdp == NULL) { 109 sdp = kmalloc(sizeof(*sdp), M_NSMBDEV, M_WAITOK); 110 dev->si_drv1 = (void*)sdp; 111 } 112 /* 113 * XXX: this is just crazy - make a device for an already passed 114 * device... someone should take care of it. 115 */ 116 #if 0 117 if ((dev->si_flags & SI_NAMED) == 0) { 118 make_dev(&nsmb_ops, minor(dev), 119 ap->a_cred->cr_uid, ap->a_cred->cr_gid, 120 0700, NSMB_NAME"%d", lminor(dev)); 121 } 122 #endif 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 kqinfo)); 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 devfs_clone_bitmap_put(&DEVFS_CLONE_BITMAP(nsmb), dev->si_uminor); 166 destroy_dev(dev); 167 return 0; 168 } 169 170 171 static int 172 nsmb_dev_ioctl(struct dev_ioctl_args *ap) 173 { 174 cdev_t dev = ap->a_head.a_dev; 175 caddr_t data = ap->a_data; 176 struct smb_dev *sdp; 177 struct smb_vc *vcp; 178 struct smb_share *ssp; 179 struct smb_cred scred; 180 int error = 0; 181 182 SMB_CHECKMINOR(dev); 183 if ((sdp->sd_flags & NSMBFL_OPEN) == 0) 184 return EBADF; 185 186 smb_makescred(&scred, NULL, ap->a_cred); 187 switch (ap->a_cmd) { 188 case SMBIOC_OPENSESSION: 189 if (sdp->sd_vc) 190 return EISCONN; 191 error = smb_usr_opensession((struct smbioc_ossn*)data, 192 &scred, &vcp); 193 if (error) 194 break; 195 sdp->sd_vc = vcp; 196 smb_vc_unlock(vcp, 0); 197 sdp->sd_level = SMBL_VC; 198 break; 199 case SMBIOC_OPENSHARE: 200 if (sdp->sd_share) 201 return EISCONN; 202 if (sdp->sd_vc == NULL) 203 return ENOTCONN; 204 error = smb_usr_openshare(sdp->sd_vc, 205 (struct smbioc_oshare*)data, &scred, &ssp); 206 if (error) 207 break; 208 sdp->sd_share = ssp; 209 smb_share_unlock(ssp, 0); 210 sdp->sd_level = SMBL_SHARE; 211 break; 212 case SMBIOC_REQUEST: 213 if (sdp->sd_share == NULL) 214 return ENOTCONN; 215 error = smb_usr_simplerequest(sdp->sd_share, 216 (struct smbioc_rq*)data, &scred); 217 break; 218 case SMBIOC_T2RQ: 219 if (sdp->sd_share == NULL) 220 return ENOTCONN; 221 error = smb_usr_t2request(sdp->sd_share, 222 (struct smbioc_t2rq*)data, &scred); 223 break; 224 case SMBIOC_SETFLAGS: { 225 struct smbioc_flags *fl = (struct smbioc_flags*)data; 226 int on; 227 228 if (fl->ioc_level == SMBL_VC) { 229 if (fl->ioc_mask & SMBV_PERMANENT) { 230 on = fl->ioc_flags & SMBV_PERMANENT; 231 if ((vcp = sdp->sd_vc) == NULL) 232 return ENOTCONN; 233 error = smb_vc_get(vcp, LK_EXCLUSIVE, &scred); 234 if (error) 235 break; 236 if (on && (vcp->obj.co_flags & SMBV_PERMANENT) == 0) { 237 vcp->obj.co_flags |= SMBV_PERMANENT; 238 smb_vc_ref(vcp); 239 } else if (!on && (vcp->obj.co_flags & SMBV_PERMANENT)) { 240 vcp->obj.co_flags &= ~SMBV_PERMANENT; 241 smb_vc_rele(vcp, &scred); 242 } 243 smb_vc_put(vcp, &scred); 244 } else 245 error = EINVAL; 246 } else if (fl->ioc_level == SMBL_SHARE) { 247 if (fl->ioc_mask & SMBS_PERMANENT) { 248 on = fl->ioc_flags & SMBS_PERMANENT; 249 if ((ssp = sdp->sd_share) == NULL) 250 return ENOTCONN; 251 error = smb_share_get(ssp, LK_EXCLUSIVE, &scred); 252 if (error) 253 break; 254 if (on && (ssp->obj.co_flags & SMBS_PERMANENT) == 0) { 255 ssp->obj.co_flags |= SMBS_PERMANENT; 256 smb_share_ref(ssp); 257 } else if (!on && (ssp->obj.co_flags & SMBS_PERMANENT)) { 258 ssp->obj.co_flags &= ~SMBS_PERMANENT; 259 smb_share_rele(ssp, &scred); 260 } 261 smb_share_put(ssp, &scred); 262 } else 263 error = EINVAL; 264 break; 265 } else 266 error = EINVAL; 267 break; 268 } 269 case SMBIOC_LOOKUP: 270 if (sdp->sd_vc || sdp->sd_share) 271 return EISCONN; 272 vcp = NULL; 273 ssp = NULL; 274 error = smb_usr_lookup((struct smbioc_lookup*)data, &scred, &vcp, &ssp); 275 if (error) 276 break; 277 if (vcp) { 278 sdp->sd_vc = vcp; 279 smb_vc_unlock(vcp, 0); 280 sdp->sd_level = SMBL_VC; 281 } 282 if (ssp) { 283 sdp->sd_share = ssp; 284 smb_share_unlock(ssp, 0); 285 sdp->sd_level = SMBL_SHARE; 286 } 287 break; 288 case SMBIOC_READ: case SMBIOC_WRITE: { 289 struct smbioc_rw *rwrq = (struct smbioc_rw*)data; 290 struct uio auio; 291 struct iovec iov; 292 293 if ((ssp = sdp->sd_share) == NULL) 294 return ENOTCONN; 295 iov.iov_base = rwrq->ioc_base; 296 iov.iov_len = rwrq->ioc_cnt; 297 auio.uio_iov = &iov; 298 auio.uio_iovcnt = 1; 299 auio.uio_offset = rwrq->ioc_offset; 300 auio.uio_resid = rwrq->ioc_cnt; 301 auio.uio_segflg = UIO_USERSPACE; 302 auio.uio_rw = (ap->a_cmd == SMBIOC_READ) ? UIO_READ : UIO_WRITE; 303 auio.uio_td = curthread; 304 if (ap->a_cmd == SMBIOC_READ) 305 error = smb_read(ssp, rwrq->ioc_fh, &auio, &scred); 306 else 307 error = smb_write(ssp, rwrq->ioc_fh, &auio, &scred); 308 rwrq->ioc_cnt -= auio.uio_resid; 309 break; 310 } 311 default: 312 error = ENODEV; 313 } 314 return error; 315 } 316 317 static int 318 nsmb_dev_read(struct dev_read_args *ap) 319 { 320 return EACCES; 321 } 322 323 static int 324 nsmb_dev_write(struct dev_write_args *ap) 325 { 326 return EACCES; 327 } 328 329 static int 330 nsmbclone(struct dev_clone_args *ap) 331 { 332 int unit; 333 334 unit = devfs_clone_bitmap_get(&DEVFS_CLONE_BITMAP(nsmb), 0); 335 ap->a_dev = make_only_dev(&nsmb_ops, unit, 0, 0, 0600, 336 NSMB_NAME"%d", unit); 337 338 return 0; 339 } 340 341 static int 342 nsmb_dev_load(module_t mod, int cmd, void *arg) 343 { 344 int error = 0; 345 346 switch (cmd) { 347 case MOD_LOAD: 348 error = smb_sm_init(); 349 if (error) 350 break; 351 error = smb_iod_init(); 352 if (error) { 353 smb_sm_done(); 354 break; 355 } 356 make_autoclone_dev(&nsmb_ops, &DEVFS_CLONE_BITMAP(nsmb), 357 nsmbclone, 0, 0, 0700, NSMB_NAME); 358 359 kprintf("netsmb_dev: loaded\n"); 360 break; 361 case MOD_UNLOAD: 362 smb_iod_done(); 363 error = smb_sm_done(); 364 error = 0; 365 devfs_clone_handler_del(NSMB_NAME); 366 dev_ops_remove_all(&nsmb_ops); 367 devfs_clone_bitmap_uninit(&DEVFS_CLONE_BITMAP(nsmb)); 368 kprintf("netsmb_dev: unloaded\n"); 369 break; 370 default: 371 error = EINVAL; 372 break; 373 } 374 return error; 375 } 376 377 DEV_MODULE (dev_netsmb, nsmb_dev_load, 0); 378 379 int 380 smb_dev2share(int fd, int mode, struct smb_cred *scred, 381 struct smb_share **sspp) 382 { 383 struct file *fp; 384 struct vnode *vp; 385 struct smb_dev *sdp; 386 struct smb_share *ssp; 387 cdev_t dev; 388 int error; 389 390 KKASSERT(scred->scr_td->td_proc); 391 392 fp = holdfp(scred->scr_td->td_proc->p_fd, fd, FREAD|FWRITE); 393 if (fp == NULL) 394 return EBADF; 395 396 vp = (struct vnode*)fp->f_data; 397 if (vp == NULL) { 398 error = EBADF; 399 goto done; 400 } 401 dev = vn_todev(vp); 402 if (dev == NULL) { 403 error = EBADF; 404 goto done; 405 } 406 SMB_CHECKMINOR(dev); 407 ssp = sdp->sd_share; 408 if (ssp == NULL) { 409 error = ENOTCONN; 410 goto done; 411 } 412 error = smb_share_get(ssp, LK_EXCLUSIVE, scred); 413 if (error == 0) 414 *sspp = ssp; 415 done: 416 fdrop(fp); 417 return (error); 418 } 419 420