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 2014 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 66 ioc->maxconnections = 10; 67 ioc->maxworkers = 20; 68 smbd_report("maxconnections=%d, maxworkers=%d", 69 ioc->maxconnections, ioc->maxworkers); 70 } 71 72 boolean_t 73 smb_kmod_isbound(void) 74 { 75 return (smbdrv_opened); 76 } 77 78 int 79 smb_kmod_bind(void) 80 { 81 int rc; 82 83 if (smbdrv_opened) { 84 smbdrv_opened = B_FALSE; 85 (void) fksmbsrv_drv_close(); 86 } 87 88 rc = fksmbsrv_drv_open(); 89 if (rc == 0) 90 smbdrv_opened = B_TRUE; 91 92 return (rc); 93 } 94 95 void 96 smb_kmod_unbind(void) 97 { 98 if (smbdrv_opened) { 99 smbdrv_opened = B_FALSE; 100 (void) fksmbsrv_drv_close(); 101 } 102 } 103 104 int 105 smb_kmod_ioctl(int cmd, smb_ioc_header_t *ioc, uint32_t len) 106 { 107 int rc; 108 109 _NOTE(ARGUNUSED(len)); 110 111 if (!smbdrv_opened) 112 return (EBADF); 113 114 if (cmd == SMB_IOC_CONFIG) 115 fksmbd_adjust_config(ioc); 116 117 rc = fksmbsrv_drv_ioctl(cmd, ioc); 118 return (rc); 119 } 120 121 /* ARGSUSED */ 122 int 123 smb_kmod_start(int opipe, int lmshr, int udoor) 124 { 125 smb_ioc_start_t ioc; 126 int rc; 127 128 bzero(&ioc, sizeof (ioc)); 129 130 /* These three are unused */ 131 ioc.opipe = -1; 132 ioc.lmshrd = -1; 133 ioc.udoor = -1; 134 135 /* These are the "door" dispatch callbacks */ 136 ioc.lmshr_func = NULL; /* not used */ 137 ioc.opipe_func = NULL; /* not used */ 138 ioc.udoor_func = (void *)fksmbd_door_dispatch; 139 140 rc = smb_kmod_ioctl(SMB_IOC_START, &ioc.hdr, sizeof (ioc)); 141 return (rc); 142 } 143 144 void 145 smb_kmod_stop(void) 146 { 147 smb_ioc_header_t ioc; 148 149 bzero(&ioc, sizeof (ioc)); 150 (void) smb_kmod_ioctl(SMB_IOC_STOP, &ioc, sizeof (ioc)); 151 } 152