1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved. 23 * Copyright 2013 Nexenta Systems, Inc. All rights reserved. 24 */ 25 26 #include <sys/types.h> 27 #include <sys/conf.h> 28 #include <sys/ddi.h> 29 #include <sys/modctl.h> 30 #include <sys/cred.h> 31 #include <sys/disp.h> 32 #include <sys/ioccom.h> 33 #include <sys/policy.h> 34 #include <sys/cmn_err.h> 35 #include <smbsrv/smb_kproto.h> 36 #include <smbsrv/smb_ioctl.h> 37 38 #ifdef _FAKE_KERNEL 39 #error "See libfksmbsrv" 40 #endif /* _FAKE_KERNEL */ 41 42 static int smb_drv_open(dev_t *, int, int, cred_t *); 43 static int smb_drv_close(dev_t, int, int, cred_t *); 44 static int smb_drv_ioctl(dev_t, int, intptr_t, int, cred_t *, int *); 45 static int smb_drv_attach(dev_info_t *, ddi_attach_cmd_t); 46 static int smb_drv_detach(dev_info_t *, ddi_detach_cmd_t); 47 static int smb_drv_getinfo(dev_info_t *, ddi_info_cmd_t, void *, void **); 48 49 /* 50 * ***************************************************************************** 51 * ****************************** Global Variables ***************************** 52 * ***************************************************************************** 53 * 54 * These variables can only be changed through the /etc/system file. 55 */ 56 57 /* 58 * Maximum buffer size for NT: configurable based on the client environment. 59 * IR104720 Experiments with Windows 2000 indicate that we achieve better 60 * SmbWriteX performance with a buffer size of 64KB instead of the 37KB used 61 * with Windows NT4.0. Previous experiments with NT4.0 resulted in directory 62 * listing problems so this buffer size is configurable based on the end-user 63 * environment. When in doubt use 37KB. 64 */ 65 int smb_maxbufsize = SMB_NT_MAXBUF; 66 int smb_oplock_levelII = 1; 67 int smb_oplock_timeout = OPLOCK_STD_TIMEOUT; 68 int smb_oplock_min_timeout = OPLOCK_MIN_TIMEOUT; 69 int smb_flush_required = 1; 70 int smb_dirsymlink_enable = 1; 71 int smb_sign_debug = 0; 72 int smb_shortnames = 1; 73 uint_t smb_audit_flags = 74 #ifdef DEBUG 75 SMB_AUDIT_NODE; 76 #else 77 0; 78 #endif 79 80 /* 81 * Maximum number of simultaneous authentication, share mapping, pipe open 82 * requests to be processed. 83 */ 84 int smb_ssetup_threshold = 256; 85 int smb_tcon_threshold = 1024; 86 int smb_opipe_threshold = 1024; 87 88 /* 89 * Number of milliseconds that a request will be stalled if it comes in after 90 * the maximum number of inflight operations are being proccessed. 91 */ 92 int smb_ssetup_timeout = (30 * 1000); 93 int smb_tcon_timeout = (30 * 1000); 94 int smb_opipe_timeout = (30 * 1000); 95 96 /* 97 * Thread priorities used in smbsrv. Our threads spend most of their time 98 * blocked on various conditions. However, if the system gets heavy load, 99 * the scheduler has to choose an order to run these. We want the order: 100 * (a) timers, (b) notifications, (c) workers, (d) receivers (and etc.) 101 * where notifications are oplock and change notify work. Aside from this 102 * relative ordering, smbsrv threads should run with a priority close to 103 * that of normal user-space threads (thus minclsyspri below), just like 104 * NFS and other "file service" kinds of processing. 105 */ 106 int smbsrv_base_pri = MINCLSYSPRI; 107 int smbsrv_listen_pri = MINCLSYSPRI; 108 int smbsrv_receive_pri = MINCLSYSPRI; 109 int smbsrv_worker_pri = MINCLSYSPRI + 1; 110 int smbsrv_notify_pri = MINCLSYSPRI + 2; 111 int smbsrv_timer_pri = MINCLSYSPRI + 5; 112 113 114 /* 115 * ***************************************************************************** 116 * ********************** Static Variables / Module Linkage ******************** 117 * ***************************************************************************** 118 */ 119 120 static struct cb_ops cbops = { 121 smb_drv_open, /* cb_open */ 122 smb_drv_close, /* cb_close */ 123 nodev, /* cb_strategy */ 124 nodev, /* cb_print */ 125 nodev, /* cb_dump */ 126 nodev, /* cb_read */ 127 nodev, /* cb_write */ 128 smb_drv_ioctl, /* cb_ioctl */ 129 nodev, /* cb_devmap */ 130 nodev, /* cb_mmap */ 131 nodev, /* cb_segmap */ 132 nochpoll, /* cb_chpoll */ 133 ddi_prop_op, /* cb_prop_op */ 134 NULL, /* cb_streamtab */ 135 D_MP, /* cb_flag */ 136 CB_REV, /* cb_rev */ 137 nodev, /* cb_aread */ 138 nodev, /* cb_awrite */ 139 }; 140 141 static struct dev_ops devops = { 142 DEVO_REV, /* devo_rev */ 143 0, /* devo_refcnt */ 144 smb_drv_getinfo, /* devo_getinfo */ 145 nulldev, /* devo_identify */ 146 nulldev, /* devo_probe */ 147 smb_drv_attach, /* devo_attach */ 148 smb_drv_detach, /* devo_detach */ 149 nodev, /* devo_reset */ 150 &cbops, /* devo_cb_ops */ 151 NULL, /* devo_bus_ops */ 152 NULL, /* devo_power */ 153 ddi_quiesce_not_needed, /* devo_quiesce */ 154 }; 155 156 static struct modldrv modldrv = { 157 &mod_driverops, /* drv_modops */ 158 "CIFS Server Protocol", /* drv_linkinfo */ 159 &devops, 160 }; 161 162 static struct modlinkage modlinkage = { 163 MODREV_1, /* revision of the module, must be: MODREV_1 */ 164 &modldrv, /* ptr to linkage structures */ 165 NULL, 166 }; 167 168 static dev_info_t *smb_drv_dip = NULL; 169 170 /* 171 * **************************************************************************** 172 * Module Interface 173 * **************************************************************************** 174 */ 175 176 int 177 _init(void) 178 { 179 int rc; 180 181 if ((rc = smb_server_g_init()) != 0) { 182 return (rc); 183 } 184 185 if ((rc = mod_install(&modlinkage)) != 0) { 186 (void) smb_server_g_fini(); 187 } 188 189 return (rc); 190 } 191 192 int 193 _info(struct modinfo *modinfop) 194 { 195 return (mod_info(&modlinkage, modinfop)); 196 } 197 198 int 199 _fini(void) 200 { 201 int rc; 202 203 if ((rc = mod_remove(&modlinkage)) == 0) { 204 rc = smb_server_g_fini(); 205 } 206 207 return (rc); 208 } 209 210 /* 211 * **************************************************************************** 212 * Pseudo Device Entry Points 213 * **************************************************************************** 214 */ 215 /* ARGSUSED */ 216 static int 217 smb_drv_open(dev_t *devp, int flag, int otyp, cred_t *cr) 218 { 219 zoneid_t zid; 220 221 /* 222 * Check caller's privileges. 223 */ 224 if (secpolicy_smb(cr) != 0) 225 return (EPERM); 226 227 /* 228 * We need a unique minor per zone otherwise an smbd in any other 229 * zone will keep this minor open and we won't get a close call. 230 * The zone ID is good enough as a minor number. 231 */ 232 zid = crgetzoneid(cr); 233 if (zid < 0) 234 return (ENODEV); 235 *devp = makedevice(getmajor(*devp), zid); 236 237 /* 238 * Start SMB service state machine 239 */ 240 return (smb_server_create()); 241 } 242 243 /* ARGSUSED */ 244 static int 245 smb_drv_close(dev_t dev, int flag, int otyp, cred_t *credp) 246 { 247 return (smb_server_delete()); 248 } 249 250 /* ARGSUSED */ 251 static int 252 smb_drv_ioctl(dev_t drv, int cmd, intptr_t argp, int flags, cred_t *cred, 253 int *retval) 254 { 255 smb_ioc_t *ioc; 256 smb_ioc_header_t ioc_hdr; 257 uint32_t crc; 258 boolean_t copyout = B_FALSE; 259 int rc = 0; 260 261 if (ddi_copyin((const void *)argp, &ioc_hdr, sizeof (smb_ioc_header_t), 262 flags) || (ioc_hdr.version != SMB_IOC_VERSION)) 263 return (EFAULT); 264 265 crc = ioc_hdr.crc; 266 ioc_hdr.crc = 0; 267 if (smb_crc_gen((uint8_t *)&ioc_hdr, sizeof (ioc_hdr)) != crc) 268 return (EFAULT); 269 270 ioc = kmem_alloc(ioc_hdr.len, KM_SLEEP); 271 if (ddi_copyin((const void *)argp, ioc, ioc_hdr.len, flags)) { 272 kmem_free(ioc, ioc_hdr.len); 273 return (EFAULT); 274 } 275 276 switch (cmd) { 277 case SMB_IOC_CONFIG: 278 rc = smb_server_configure(&ioc->ioc_cfg); 279 break; 280 case SMB_IOC_START: 281 rc = smb_server_start(&ioc->ioc_start); 282 break; 283 case SMB_IOC_STOP: 284 rc = smb_server_stop(); 285 break; 286 case SMB_IOC_EVENT: 287 rc = smb_server_notify_event(&ioc->ioc_event); 288 break; 289 case SMB_IOC_GMTOFF: 290 rc = smb_server_set_gmtoff(&ioc->ioc_gmt); 291 break; 292 case SMB_IOC_SHARE: 293 rc = smb_kshare_export_list(&ioc->ioc_share); 294 break; 295 case SMB_IOC_UNSHARE: 296 rc = smb_kshare_unexport_list(&ioc->ioc_share); 297 break; 298 case SMB_IOC_SHAREINFO: 299 rc = smb_kshare_info(&ioc->ioc_shareinfo); 300 copyout = B_TRUE; 301 break; 302 case SMB_IOC_NUMOPEN: 303 rc = smb_server_numopen(&ioc->ioc_opennum); 304 copyout = B_TRUE; 305 break; 306 case SMB_IOC_SVCENUM: 307 rc = smb_server_enum(&ioc->ioc_svcenum); 308 copyout = B_TRUE; 309 break; 310 case SMB_IOC_SESSION_CLOSE: 311 rc = smb_server_session_close(&ioc->ioc_session); 312 break; 313 case SMB_IOC_FILE_CLOSE: 314 rc = smb_server_file_close(&ioc->ioc_fileid); 315 break; 316 case SMB_IOC_SPOOLDOC: 317 rc = smb_server_spooldoc(&ioc->ioc_spooldoc); 318 copyout = B_TRUE; 319 break; 320 default: 321 rc = ENOTTY; 322 break; 323 } 324 if ((rc == 0) && copyout) { 325 if (ddi_copyout((const void *)ioc, (void *)argp, ioc_hdr.len, 326 flags)) 327 rc = EFAULT; 328 } 329 kmem_free(ioc, ioc_hdr.len); 330 return (rc); 331 } 332 333 /* 334 * **************************************************************************** 335 * Pseudo Device Operations 336 * **************************************************************************** 337 */ 338 static int 339 smb_drv_attach(dev_info_t *dip, ddi_attach_cmd_t cmd) 340 { 341 if (cmd == DDI_ATTACH) { 342 /* we only allow instance 0 to attach */ 343 if (ddi_get_instance(dip) == 0) { 344 /* create the minor node */ 345 if (ddi_create_minor_node(dip, "smbsrv", S_IFCHR, 0, 346 DDI_PSEUDO, 0) == DDI_SUCCESS) { 347 smb_drv_dip = dip; 348 return (DDI_SUCCESS); 349 } else { 350 cmn_err(CE_WARN, "smb_drv_attach:" 351 " failed creating minor node"); 352 } 353 } 354 } 355 return (DDI_FAILURE); 356 } 357 358 static int 359 smb_drv_detach(dev_info_t *dip, ddi_detach_cmd_t cmd) 360 { 361 if (cmd == DDI_DETACH) { 362 ASSERT(dip == smb_drv_dip); 363 ddi_remove_minor_node(dip, NULL); 364 smb_drv_dip = NULL; 365 return (DDI_SUCCESS); 366 } 367 return (DDI_FAILURE); 368 } 369 370 /* ARGSUSED */ 371 static int 372 smb_drv_getinfo(dev_info_t *dip, ddi_info_cmd_t cmd, void *arg, void **result) 373 { 374 ulong_t instance = getminor((dev_t)arg); 375 376 switch (cmd) { 377 case DDI_INFO_DEVT2DEVINFO: 378 *result = smb_drv_dip; 379 return (DDI_SUCCESS); 380 381 case DDI_INFO_DEVT2INSTANCE: 382 *result = (void *)instance; 383 return (DDI_SUCCESS); 384 385 default: 386 break; 387 } 388 389 return (DDI_FAILURE); 390 } 391