1 /* 2 * This file and its contents are supplied under the terms of the 3 * Common Development and Distribution License ("CDDL"), version 1.0. 4 * You may only use this file in accordance with the terms of version 5 * 1.0 of the CDDL. 6 * 7 * A full copy of the text of the CDDL should have accompanied this 8 * source. A copy of the CDDL is also available via the Internet at 9 * http://www.illumos.org/license/CDDL. 10 */ 11 12 /* 13 * Copyright 2015 Nexenta Systems, Inc. All rights reserved. 14 */ 15 16 /* 17 * These replace NODIRECT functions of the same name in 18 * $SRC/lib/smbsrv/libsmb/common/smb_kmod.c including: 19 * smb_kmod_bind, smb_kmod_ioctl, smb_kmod_isbound, 20 * smb_kmod_start, smb_kmod_stop, smb_kmod_unbind. 21 * 22 * For all the other smb_kmod_... functions, we can just use the 23 * libsmb code because those all call smb_kmod_ioctl, for which 24 * we have an override here. 25 * 26 * The replacment functions here just call the libfksmbsrv code 27 * directly where the real (in-kernel) versions would be entered 28 * via the driver framework (open, close, ioctl). Aside from that, 29 * the call sequences are intentionally the same (where possible). 30 * In particular, that makes it possible to debug startup/teardown 31 * problems in the user-space version of this code. 32 */ 33 34 #include <sys/types.h> 35 #include <sys/stat.h> 36 #include <sys/ioccom.h> 37 #include <sys/param.h> 38 #include <stddef.h> 39 #include <stdio.h> 40 #include <string.h> 41 #include <strings.h> 42 #include <stdlib.h> 43 #include <unistd.h> 44 #include <fcntl.h> 45 #include <errno.h> 46 #include <note.h> 47 48 #include <smbsrv/smbinfo.h> 49 #include <smbsrv/smb_ioctl.h> 50 #include "smbd.h" 51 52 boolean_t smbdrv_opened = B_FALSE; 53 54 /* 55 * We want to adjust a few things in the standard configuration 56 * passed to the "fake" version of the smbsrv kernel module. 57 * 58 * Reduce the maximum number of connections and workers, just for 59 * convenience while debugging. (Don't want hundreds of threads.) 60 */ 61 static void 62 fksmbd_adjust_config(smb_ioc_header_t *ioc_hdr) 63 { 64 smb_ioc_cfg_t *ioc = (smb_ioc_cfg_t *)ioc_hdr; 65 char *s; 66 67 ioc->maxconnections = 10; 68 ioc->maxworkers = 20; 69 smbd_report("maxconnections=%d, maxworkers=%d", 70 ioc->maxconnections, ioc->maxworkers); 71 72 if ((s = getenv("SMB_SIGNING")) != NULL) { 73 ioc->signing_enable = 0; 74 ioc->signing_required = 0; 75 switch (s[0]) { 76 case 'e': 77 ioc->signing_enable = 1; 78 break; 79 case 'r': 80 ioc->signing_enable = 1; 81 ioc->signing_required = 1; 82 break; 83 default: 84 smbd_report("env SMB_SIGNING invalid"); 85 break; 86 } 87 } 88 smbd_report("signing: enable=%d, required=%d", 89 ioc->signing_enable, ioc->signing_required); 90 } 91 92 boolean_t 93 smb_kmod_isbound(void) 94 { 95 return (smbdrv_opened); 96 } 97 98 int 99 smb_kmod_bind(void) 100 { 101 int rc; 102 103 if (smbdrv_opened) { 104 smbdrv_opened = B_FALSE; 105 (void) fksmbsrv_drv_close(); 106 } 107 108 rc = fksmbsrv_drv_open(); 109 if (rc == 0) 110 smbdrv_opened = B_TRUE; 111 112 return (rc); 113 } 114 115 void 116 smb_kmod_unbind(void) 117 { 118 if (smbdrv_opened) { 119 smbdrv_opened = B_FALSE; 120 (void) fksmbsrv_drv_close(); 121 } 122 } 123 124 int 125 smb_kmod_ioctl(int cmd, smb_ioc_header_t *ioc, uint32_t len) 126 { 127 int rc; 128 129 _NOTE(ARGUNUSED(len)); 130 131 if (!smbdrv_opened) 132 return (EBADF); 133 134 if (cmd == SMB_IOC_CONFIG) 135 fksmbd_adjust_config(ioc); 136 137 rc = fksmbsrv_drv_ioctl(cmd, ioc); 138 return (rc); 139 } 140 141 /* ARGSUSED */ 142 int 143 smb_kmod_start(int opipe, int lmshr, int udoor) 144 { 145 smb_ioc_start_t ioc; 146 int rc; 147 148 bzero(&ioc, sizeof (ioc)); 149 150 /* These three are unused */ 151 ioc.opipe = -1; 152 ioc.lmshrd = -1; 153 ioc.udoor = -1; 154 155 /* These are the "door" dispatch callbacks */ 156 ioc.lmshr_func = NULL; /* not used */ 157 ioc.opipe_func = NULL; /* not used */ 158 ioc.udoor_func = (void *)fksmbd_door_dispatch; 159 160 rc = smb_kmod_ioctl(SMB_IOC_START, &ioc.hdr, sizeof (ioc)); 161 return (rc); 162 } 163 164 void 165 smb_kmod_stop(void) 166 { 167 smb_ioc_header_t ioc; 168 169 bzero(&ioc, sizeof (ioc)); 170 (void) smb_kmod_ioctl(SMB_IOC_STOP, &ioc, sizeof (ioc)); 171 } 172