| 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 1.16 2006/09/10 01:26:40 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/ioccom.h> |
| 42 | #include <sys/malloc.h> |
| 43 | #include <sys/file.h> /* Must come after sys/malloc.h */ |
| 44 | #include <sys/poll.h> |
| 45 | #include <sys/proc.h> |
| 46 | #include <sys/select.h> |
| 47 | #include <sys/socket.h> |
| 48 | #include <sys/socketvar.h> |
| 49 | #include <sys/sysctl.h> |
| 50 | #include <sys/uio.h> |
| 51 | #include <sys/vnode.h> |
| 52 | #include <sys/thread2.h> |
| 53 | |
| 54 | #include <net/if.h> |
| 55 | |
| 56 | #include "smb.h" |
| 57 | #include "smb_conn.h" |
| 58 | #include "smb_subr.h" |
| 59 | #include "smb_dev.h" |
| 60 | |
| 61 | #define SMB_GETDEV(dev) ((struct smb_dev*)(dev)->si_drv1) |
| 62 | #define SMB_CHECKMINOR(dev) do { \ |
| 63 | sdp = SMB_GETDEV(dev); \ |
| 64 | if (sdp == NULL) return ENXIO; \ |
| 65 | } while(0) |
| 66 | |
| 67 | static d_open_t nsmb_dev_open; |
| 68 | static d_close_t nsmb_dev_close; |
| 69 | static d_read_t nsmb_dev_read; |
| 70 | static d_write_t nsmb_dev_write; |
| 71 | static d_ioctl_t nsmb_dev_ioctl; |
| 72 | static d_poll_t nsmb_dev_poll; |
| 73 | |
| 74 | MODULE_VERSION(netsmb, NSMB_VERSION); |
| 75 | |
| 76 | #define SI_NAMED 0 |
| 77 | |
| 78 | static int smb_version = NSMB_VERSION; |
| 79 | |
| 80 | |
| 81 | SYSCTL_DECL(_net_smb); |
| 82 | SYSCTL_INT(_net_smb, OID_AUTO, version, CTLFLAG_RD, &smb_version, 0, ""); |
| 83 | |
| 84 | static MALLOC_DEFINE(M_NSMBDEV, "NETSMBDEV", "NET/SMB device"); |
| 85 | |
| 86 | |
| 87 | /* |
| 88 | int smb_dev_queue(struct smb_dev *ndp, struct smb_rq *rqp, int prio); |
| 89 | */ |
| 90 | |
| 91 | static struct dev_ops nsmb_ops = { |
| 92 | { NSMB_NAME, NSMB_MAJOR, 0 }, |
| 93 | .d_open = nsmb_dev_open, |
| 94 | .d_close = nsmb_dev_close, |
| 95 | .d_read = nsmb_dev_read, |
| 96 | .d_write = nsmb_dev_write, |
| 97 | .d_ioctl = nsmb_dev_ioctl, |
| 98 | .d_poll = nsmb_dev_poll, |
| 99 | }; |
| 100 | |
| 101 | |
| 102 | static int |
| 103 | nsmb_dev_open(struct dev_open_args *ap) |
| 104 | { |
| 105 | cdev_t dev = ap->a_head.a_dev; |
| 106 | struct smb_dev *sdp; |
| 107 | |
| 108 | sdp = SMB_GETDEV(dev); |
| 109 | if (sdp && (sdp->sd_flags & NSMBFL_OPEN)) |
| 110 | return EBUSY; |
| 111 | if (sdp == NULL) { |
| 112 | sdp = kmalloc(sizeof(*sdp), M_NSMBDEV, M_WAITOK); |
| 113 | dev->si_drv1 = (void*)sdp; |
| 114 | } |
| 115 | /* |
| 116 | * XXX: this is just crazy - make a device for an already passed |
| 117 | * device... someone should take care of it. |
| 118 | */ |
| 119 | if ((dev->si_flags & SI_NAMED) == 0) { |
| 120 | make_dev(&nsmb_ops, minor(dev), |
| 121 | ap->a_cred->cr_uid, ap->a_cred->cr_gid, |
| 122 | 0700, NSMB_NAME"%d", lminor(dev)); |
| 123 | } |
| 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 | 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 | nsmb_dev_poll(struct dev_poll_args *ap) |
| 330 | { |
| 331 | return ENODEV; |
| 332 | } |
| 333 | |
| 334 | static int |
| 335 | nsmb_dev_load(module_t mod, int cmd, void *arg) |
| 336 | { |
| 337 | int error = 0; |
| 338 | |
| 339 | switch (cmd) { |
| 340 | case MOD_LOAD: |
| 341 | error = smb_sm_init(); |
| 342 | if (error) |
| 343 | break; |
| 344 | error = smb_iod_init(); |
| 345 | if (error) { |
| 346 | smb_sm_done(); |
| 347 | break; |
| 348 | } |
| 349 | dev_ops_add(&nsmb_ops, 0, 0); |
| 350 | printf("netsmb_dev: loaded\n"); |
| 351 | break; |
| 352 | case MOD_UNLOAD: |
| 353 | smb_iod_done(); |
| 354 | error = smb_sm_done(); |
| 355 | error = 0; |
| 356 | dev_ops_remove(&nsmb_ops, 0, 0); |
| 357 | printf("netsmb_dev: unloaded\n"); |
| 358 | break; |
| 359 | default: |
| 360 | error = EINVAL; |
| 361 | break; |
| 362 | } |
| 363 | return error; |
| 364 | } |
| 365 | |
| 366 | DEV_MODULE (dev_netsmb, nsmb_dev_load, 0); |
| 367 | |
| 368 | int |
| 369 | smb_dev2share(int fd, int mode, struct smb_cred *scred, |
| 370 | struct smb_share **sspp) |
| 371 | { |
| 372 | struct file *fp; |
| 373 | struct vnode *vp; |
| 374 | struct smb_dev *sdp; |
| 375 | struct smb_share *ssp; |
| 376 | cdev_t dev; |
| 377 | int error; |
| 378 | |
| 379 | KKASSERT(scred->scr_td->td_proc); |
| 380 | |
| 381 | fp = holdfp(scred->scr_td->td_proc->p_fd, fd, FREAD|FWRITE); |
| 382 | if (fp == NULL) |
| 383 | return EBADF; |
| 384 | |
| 385 | vp = (struct vnode*)fp->f_data; |
| 386 | if (vp == NULL) { |
| 387 | error = EBADF; |
| 388 | goto done; |
| 389 | } |
| 390 | dev = vn_todev(vp); |
| 391 | if (dev == NOCDEV) { |
| 392 | error = EBADF; |
| 393 | goto done; |
| 394 | } |
| 395 | SMB_CHECKMINOR(dev); |
| 396 | ssp = sdp->sd_share; |
| 397 | if (ssp == NULL) { |
| 398 | error = ENOTCONN; |
| 399 | goto done; |
| 400 | } |
| 401 | error = smb_share_get(ssp, LK_EXCLUSIVE, scred); |
| 402 | if (error == 0) |
| 403 | *sspp = ssp; |
| 404 | done: |
| 405 | fdrop(fp); |
| 406 | return (error); |
| 407 | } |
| 408 | |