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 */ 34 #include <sys/param.h> 35 #include <sys/kernel.h> 36 #include <sys/systm.h> 37 #include <sys/conf.h> 38 #include <sys/device.h> 39 #include <sys/fcntl.h> 40 #include <sys/malloc.h> 41 #include <sys/file.h> /* Must come after sys/malloc.h */ 42 #include <sys/proc.h> 43 #include <sys/socket.h> 44 #include <sys/socketvar.h> 45 #include <sys/sysctl.h> 46 #include <sys/uio.h> 47 #include <sys/vnode.h> 48 #include <sys/thread2.h> 49 #include <sys/devfs.h> 50 #include <net/if.h> 51 52 #include "smb.h" 53 #include "smb_conn.h" 54 #include "smb_subr.h" 55 #include "smb_dev.h" 56 57 #define SMB_GETDEV(dev) ((struct smb_dev*)(dev)->si_drv1) 58 #define SMB_CHECKMINOR(dev) do { \ 59 sdp = SMB_GETDEV(dev); \ 60 if (sdp == NULL) return ENXIO; \ 61 } while(0) 62 63 static d_open_t nsmb_dev_open; 64 static d_close_t nsmb_dev_close; 65 static d_read_t nsmb_dev_read; 66 static d_write_t nsmb_dev_write; 67 static d_ioctl_t nsmb_dev_ioctl; 68 static d_clone_t nsmbclone; 69 DEVFS_DEFINE_CLONE_BITMAP(nsmb); 70 71 MODULE_VERSION(netsmb, NSMB_VERSION); 72 73 #define SI_NAMED 0 74 75 static int smb_version = NSMB_VERSION; 76 77 78 SYSCTL_DECL(_net_smb); 79 SYSCTL_INT(_net_smb, OID_AUTO, version, CTLFLAG_RD, &smb_version, 0, ""); 80 81 static MALLOC_DEFINE(M_NSMBDEV, "NETSMBDEV", "NET/SMB device"); 82 83 84 /* 85 int smb_dev_queue(struct smb_dev *ndp, struct smb_rq *rqp, int prio); 86 */ 87 88 static struct dev_ops nsmb_ops = { 89 { NSMB_NAME, 0, 0 }, 90 .d_open = nsmb_dev_open, 91 .d_close = nsmb_dev_close, 92 .d_read = nsmb_dev_read, 93 .d_write = nsmb_dev_write, 94 .d_ioctl = nsmb_dev_ioctl, 95 }; 96 97 98 static int 99 nsmb_dev_open(struct dev_open_args *ap) 100 { 101 cdev_t dev = ap->a_head.a_dev; 102 struct smb_dev *sdp; 103 104 sdp = SMB_GETDEV(dev); 105 if (sdp && (sdp->sd_flags & NSMBFL_OPEN)) 106 return EBUSY; 107 if (sdp == NULL) { 108 sdp = kmalloc(sizeof(*sdp), M_NSMBDEV, M_WAITOK); 109 dev->si_drv1 = (void*)sdp; 110 } 111 /* 112 * XXX: this is just crazy - make a device for an already passed 113 * device... someone should take care of it. 114 */ 115 #if 0 116 if ((dev->si_flags & SI_NAMED) == 0) { 117 make_dev(&nsmb_ops, minor(dev), 118 ap->a_cred->cr_uid, ap->a_cred->cr_gid, 119 0700, NSMB_NAME"%d", lminor(dev)); 120 } 121 #endif 122 bzero(sdp, sizeof(*sdp)); 123 /* 124 STAILQ_INIT(&sdp->sd_rqlist); 125 STAILQ_INIT(&sdp->sd_rplist); 126 bzero(&sdp->sd_pollinfo, sizeof(struct kqinfo)); 127 */ 128 crit_enter(); 129 sdp->sd_level = -1; 130 sdp->sd_flags |= NSMBFL_OPEN; 131 crit_exit(); 132 return 0; 133 } 134 135 static int 136 nsmb_dev_close(struct dev_close_args *ap) 137 { 138 cdev_t dev = ap->a_head.a_dev; 139 struct smb_dev *sdp; 140 struct smb_vc *vcp; 141 struct smb_share *ssp; 142 struct smb_cred scred; 143 144 SMB_CHECKMINOR(dev); 145 crit_enter(); 146 if ((sdp->sd_flags & NSMBFL_OPEN) == 0) { 147 crit_exit(); 148 return EBADF; 149 } 150 smb_makescred(&scred, curthread, NULL); 151 ssp = sdp->sd_share; 152 if (ssp != NULL) 153 smb_share_rele(ssp, &scred); 154 vcp = sdp->sd_vc; 155 if (vcp != NULL) 156 smb_vc_rele(vcp, &scred); 157 /* 158 smb_flushq(&sdp->sd_rqlist); 159 smb_flushq(&sdp->sd_rplist); 160 */ 161 dev->si_drv1 = NULL; 162 kfree(sdp, M_NSMBDEV); 163 crit_exit(); 164 devfs_clone_bitmap_put(&DEVFS_CLONE_BITMAP(nsmb), dev->si_uminor); 165 destroy_dev(dev); 166 return 0; 167 } 168 169 170 static int 171 nsmb_dev_ioctl(struct dev_ioctl_args *ap) 172 { 173 cdev_t dev = ap->a_head.a_dev; 174 caddr_t data = ap->a_data; 175 struct smb_dev *sdp; 176 struct smb_vc *vcp; 177 struct smb_share *ssp; 178 struct smb_cred scred; 179 int error = 0; 180 181 SMB_CHECKMINOR(dev); 182 if ((sdp->sd_flags & NSMBFL_OPEN) == 0) 183 return EBADF; 184 185 smb_makescred(&scred, NULL, ap->a_cred); 186 switch (ap->a_cmd) { 187 case SMBIOC_OPENSESSION: 188 if (sdp->sd_vc) 189 return EISCONN; 190 error = smb_usr_opensession((struct smbioc_ossn*)data, 191 &scred, &vcp); 192 if (error) 193 break; 194 sdp->sd_vc = vcp; 195 smb_vc_unlock(vcp, 0); 196 sdp->sd_level = SMBL_VC; 197 break; 198 case SMBIOC_OPENSHARE: 199 if (sdp->sd_share) 200 return EISCONN; 201 if (sdp->sd_vc == NULL) 202 return ENOTCONN; 203 error = smb_usr_openshare(sdp->sd_vc, 204 (struct smbioc_oshare*)data, &scred, &ssp); 205 if (error) 206 break; 207 sdp->sd_share = ssp; 208 smb_share_unlock(ssp, 0); 209 sdp->sd_level = SMBL_SHARE; 210 break; 211 case SMBIOC_REQUEST: 212 if (sdp->sd_share == NULL) 213 return ENOTCONN; 214 error = smb_usr_simplerequest(sdp->sd_share, 215 (struct smbioc_rq*)data, &scred); 216 break; 217 case SMBIOC_T2RQ: 218 if (sdp->sd_share == NULL) 219 return ENOTCONN; 220 error = smb_usr_t2request(sdp->sd_share, 221 (struct smbioc_t2rq*)data, &scred); 222 break; 223 case SMBIOC_SETFLAGS: { 224 struct smbioc_flags *fl = (struct smbioc_flags*)data; 225 int on; 226 227 if (fl->ioc_level == SMBL_VC) { 228 if (fl->ioc_mask & SMBV_PERMANENT) { 229 on = fl->ioc_flags & SMBV_PERMANENT; 230 if ((vcp = sdp->sd_vc) == NULL) 231 return ENOTCONN; 232 error = smb_vc_get(vcp, LK_EXCLUSIVE, &scred); 233 if (error) 234 break; 235 if (on && (vcp->obj.co_flags & SMBV_PERMANENT) == 0) { 236 vcp->obj.co_flags |= SMBV_PERMANENT; 237 smb_vc_ref(vcp); 238 } else if (!on && (vcp->obj.co_flags & SMBV_PERMANENT)) { 239 vcp->obj.co_flags &= ~SMBV_PERMANENT; 240 smb_vc_rele(vcp, &scred); 241 } 242 smb_vc_put(vcp, &scred); 243 } else 244 error = EINVAL; 245 } else if (fl->ioc_level == SMBL_SHARE) { 246 if (fl->ioc_mask & SMBS_PERMANENT) { 247 on = fl->ioc_flags & SMBS_PERMANENT; 248 if ((ssp = sdp->sd_share) == NULL) 249 return ENOTCONN; 250 error = smb_share_get(ssp, LK_EXCLUSIVE, &scred); 251 if (error) 252 break; 253 if (on && (ssp->obj.co_flags & SMBS_PERMANENT) == 0) { 254 ssp->obj.co_flags |= SMBS_PERMANENT; 255 smb_share_ref(ssp); 256 } else if (!on && (ssp->obj.co_flags & SMBS_PERMANENT)) { 257 ssp->obj.co_flags &= ~SMBS_PERMANENT; 258 smb_share_rele(ssp, &scred); 259 } 260 smb_share_put(ssp, &scred); 261 } else 262 error = EINVAL; 263 break; 264 } else 265 error = EINVAL; 266 break; 267 } 268 case SMBIOC_LOOKUP: 269 if (sdp->sd_vc || sdp->sd_share) 270 return EISCONN; 271 vcp = NULL; 272 ssp = NULL; 273 error = smb_usr_lookup((struct smbioc_lookup*)data, &scred, &vcp, &ssp); 274 if (error) 275 break; 276 if (vcp) { 277 sdp->sd_vc = vcp; 278 smb_vc_unlock(vcp, 0); 279 sdp->sd_level = SMBL_VC; 280 } 281 if (ssp) { 282 sdp->sd_share = ssp; 283 smb_share_unlock(ssp, 0); 284 sdp->sd_level = SMBL_SHARE; 285 } 286 break; 287 case SMBIOC_READ: case SMBIOC_WRITE: { 288 struct smbioc_rw *rwrq = (struct smbioc_rw*)data; 289 struct uio auio; 290 struct iovec iov; 291 292 if ((ssp = sdp->sd_share) == NULL) 293 return ENOTCONN; 294 iov.iov_base = rwrq->ioc_base; 295 iov.iov_len = rwrq->ioc_cnt; 296 auio.uio_iov = &iov; 297 auio.uio_iovcnt = 1; 298 auio.uio_offset = rwrq->ioc_offset; 299 auio.uio_resid = rwrq->ioc_cnt; 300 auio.uio_segflg = UIO_USERSPACE; 301 auio.uio_rw = (ap->a_cmd == SMBIOC_READ) ? UIO_READ : UIO_WRITE; 302 auio.uio_td = curthread; 303 if (ap->a_cmd == SMBIOC_READ) 304 error = smb_read(ssp, rwrq->ioc_fh, &auio, &scred); 305 else 306 error = smb_write(ssp, rwrq->ioc_fh, &auio, &scred); 307 rwrq->ioc_cnt -= auio.uio_resid; 308 break; 309 } 310 default: 311 error = ENODEV; 312 } 313 return error; 314 } 315 316 static int 317 nsmb_dev_read(struct dev_read_args *ap) 318 { 319 return EACCES; 320 } 321 322 static int 323 nsmb_dev_write(struct dev_write_args *ap) 324 { 325 return EACCES; 326 } 327 328 static int 329 nsmbclone(struct dev_clone_args *ap) 330 { 331 int unit; 332 333 unit = devfs_clone_bitmap_get(&DEVFS_CLONE_BITMAP(nsmb), 0); 334 ap->a_dev = make_only_dev(&nsmb_ops, unit, 0, 0, 0600, 335 NSMB_NAME"%d", unit); 336 337 return 0; 338 } 339 340 static int 341 nsmb_dev_load(module_t mod, int cmd, void *arg) 342 { 343 int error = 0; 344 345 switch (cmd) { 346 case MOD_LOAD: 347 error = smb_sm_init(); 348 if (error) 349 break; 350 error = smb_iod_init(); 351 if (error) { 352 smb_sm_done(); 353 break; 354 } 355 make_autoclone_dev(&nsmb_ops, &DEVFS_CLONE_BITMAP(nsmb), 356 nsmbclone, 0, 0, 0700, NSMB_NAME); 357 358 kprintf("netsmb_dev: loaded\n"); 359 break; 360 case MOD_UNLOAD: 361 smb_iod_done(); 362 error = smb_sm_done(); 363 error = 0; 364 devfs_clone_handler_del(NSMB_NAME); 365 dev_ops_remove_all(&nsmb_ops); 366 devfs_clone_bitmap_uninit(&DEVFS_CLONE_BITMAP(nsmb)); 367 kprintf("netsmb_dev: unloaded\n"); 368 break; 369 default: 370 error = EINVAL; 371 break; 372 } 373 return error; 374 } 375 376 DEV_MODULE (dev_netsmb, nsmb_dev_load, 0); 377 378 int 379 smb_dev2share(int fd, int mode, struct smb_cred *scred, 380 struct smb_share **sspp) 381 { 382 struct file *fp; 383 struct vnode *vp; 384 struct smb_dev *sdp; 385 struct smb_share *ssp; 386 cdev_t dev; 387 int error; 388 389 KKASSERT(scred->scr_td->td_proc); 390 391 fp = holdfp_fdp(scred->scr_td->td_proc->p_fd, fd, FREAD|FWRITE); 392 if (fp == NULL) 393 return EBADF; 394 395 vp = (struct vnode*)fp->f_data; 396 if (vp == NULL) { 397 error = EBADF; 398 goto done; 399 } 400 dev = vn_todev(vp); 401 if (dev == NULL) { 402 error = EBADF; 403 goto done; 404 } 405 SMB_CHECKMINOR(dev); 406 ssp = sdp->sd_share; 407 if (ssp == NULL) { 408 error = ENOTCONN; 409 goto done; 410 } 411 error = smb_share_get(ssp, LK_EXCLUSIVE, scred); 412 if (error == 0) 413 *sspp = ssp; 414 done: 415 fdrop(fp); 416 return (error); 417 } 418 419