1da6c28aaSamw /* 2da6c28aaSamw * CDDL HEADER START 3da6c28aaSamw * 4da6c28aaSamw * The contents of this file are subject to the terms of the 5da6c28aaSamw * Common Development and Distribution License (the "License"). 6da6c28aaSamw * You may not use this file except in compliance with the License. 7da6c28aaSamw * 8da6c28aaSamw * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9da6c28aaSamw * or http://www.opensolaris.org/os/licensing. 10da6c28aaSamw * See the License for the specific language governing permissions 11da6c28aaSamw * and limitations under the License. 12da6c28aaSamw * 13da6c28aaSamw * When distributing Covered Code, include this CDDL HEADER in each 14da6c28aaSamw * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15da6c28aaSamw * If applicable, add the following below this CDDL HEADER, with the 16da6c28aaSamw * fields enclosed by brackets "[]" replaced with your own identifying 17da6c28aaSamw * information: Portions Copyright [yyyy] [name of copyright owner] 18da6c28aaSamw * 19da6c28aaSamw * CDDL HEADER END 20da6c28aaSamw */ 21da6c28aaSamw /* 22faa1795aSjb150015 * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 23da6c28aaSamw * Use is subject to license terms. 24da6c28aaSamw */ 25da6c28aaSamw 26da6c28aaSamw #pragma ident "%Z%%M% %I% %E% SMI" 27da6c28aaSamw 28da6c28aaSamw /* 29da6c28aaSamw * SMBd door server 30da6c28aaSamw */ 31da6c28aaSamw 32da6c28aaSamw #include <alloca.h> 33da6c28aaSamw #include <door.h> 34da6c28aaSamw #include <errno.h> 35da6c28aaSamw #include <syslog.h> 36da6c28aaSamw #include <unistd.h> 37da6c28aaSamw #include <varargs.h> 38da6c28aaSamw #include <stdio.h> 39da6c28aaSamw #include <synch.h> 40da6c28aaSamw #include <string.h> 41da6c28aaSamw #include <stdlib.h> 42da6c28aaSamw #include <sys/stat.h> 43da6c28aaSamw #include <fcntl.h> 44da6c28aaSamw #include <pthread.h> 45da6c28aaSamw #include <strings.h> 46da6c28aaSamw #include <smbsrv/smb_door_svc.h> 47da6c28aaSamw #include <smbsrv/smb_common_door.h> 48da6c28aaSamw 49da6c28aaSamw 50da6c28aaSamw static int smb_doorsrv_fildes = -1; 51da6c28aaSamw static mutex_t smb_doorsrv_mutex; 52da6c28aaSamw 53da6c28aaSamw static void smb_door_srv_func(void *cookie, char *ptr, size_t size, 54da6c28aaSamw door_desc_t *dp, uint_t n_odesc); 55da6c28aaSamw 56da6c28aaSamw /* 57da6c28aaSamw * smb_door_srv_start 58da6c28aaSamw * 59da6c28aaSamw * Start the smbd door service. Create and bind to a door. 60da6c28aaSamw * Returns 0 on success. Otherwise, -1. 61da6c28aaSamw */ 62da6c28aaSamw int 63da6c28aaSamw smb_door_srv_start() 64da6c28aaSamw { 65da6c28aaSamw int newfd; 66da6c28aaSamw 67da6c28aaSamw (void) mutex_lock(&smb_doorsrv_mutex); 68da6c28aaSamw 69da6c28aaSamw if (smb_doorsrv_fildes != -1) { 70da6c28aaSamw (void) fprintf(stderr, "smb_doorsrv_start: already started"); 71da6c28aaSamw (void) mutex_unlock(&smb_doorsrv_mutex); 72da6c28aaSamw return (-1); 73da6c28aaSamw } 74da6c28aaSamw 75da6c28aaSamw if ((smb_doorsrv_fildes = door_create(smb_door_srv_func, 76da6c28aaSamw SMB_DR_SVC_COOKIE, DOOR_UNREF)) < 0) { 77da6c28aaSamw (void) fprintf(stderr, "smb_doorsrv_start: door_create: %s", 78da6c28aaSamw strerror(errno)); 79da6c28aaSamw smb_doorsrv_fildes = -1; 80da6c28aaSamw (void) mutex_unlock(&smb_doorsrv_mutex); 81da6c28aaSamw return (-1); 82da6c28aaSamw } 83da6c28aaSamw 84da6c28aaSamw (void) unlink(SMB_DR_SVC_NAME); 85da6c28aaSamw 86da6c28aaSamw if ((newfd = creat(SMB_DR_SVC_NAME, 0644)) < 0) { 87da6c28aaSamw (void) fprintf(stderr, "smb_doorsrv_start: open: %s", 88da6c28aaSamw strerror(errno)); 89da6c28aaSamw (void) door_revoke(smb_doorsrv_fildes); 90da6c28aaSamw smb_doorsrv_fildes = -1; 91da6c28aaSamw (void) mutex_unlock(&smb_doorsrv_mutex); 92da6c28aaSamw return (-1); 93da6c28aaSamw } 94da6c28aaSamw 95da6c28aaSamw (void) close(newfd); 96da6c28aaSamw (void) fdetach(SMB_DR_SVC_NAME); 97da6c28aaSamw 98da6c28aaSamw if (fattach(smb_doorsrv_fildes, SMB_DR_SVC_NAME) < 0) { 99da6c28aaSamw (void) fprintf(stderr, "smb_doorsrv_start: fattach: %s", 100da6c28aaSamw strerror(errno)); 101da6c28aaSamw (void) door_revoke(smb_doorsrv_fildes); 102da6c28aaSamw smb_doorsrv_fildes = -1; 103da6c28aaSamw (void) mutex_unlock(&smb_doorsrv_mutex); 104da6c28aaSamw return (-1); 105da6c28aaSamw } 106da6c28aaSamw 107da6c28aaSamw (void) mutex_unlock(&smb_doorsrv_mutex); 108faa1795aSjb150015 return (smb_doorsrv_fildes); 109da6c28aaSamw } 110da6c28aaSamw 111da6c28aaSamw 112da6c28aaSamw /* 113da6c28aaSamw * smb_door_srv_stop 114da6c28aaSamw * 115da6c28aaSamw * Stop the smbd door service. 116da6c28aaSamw */ 117da6c28aaSamw void 118da6c28aaSamw smb_door_srv_stop(void) 119da6c28aaSamw { 120da6c28aaSamw (void) mutex_lock(&smb_doorsrv_mutex); 121da6c28aaSamw 122da6c28aaSamw if (smb_doorsrv_fildes != -1) { 123da6c28aaSamw (void) fdetach(SMB_DR_SVC_NAME); 124da6c28aaSamw (void) door_revoke(smb_doorsrv_fildes); 125da6c28aaSamw smb_doorsrv_fildes = -1; 126da6c28aaSamw } 127da6c28aaSamw 128da6c28aaSamw (void) mutex_unlock(&smb_doorsrv_mutex); 129da6c28aaSamw } 130da6c28aaSamw 131da6c28aaSamw /* 132da6c28aaSamw * smb_door_err_hdlr 133da6c28aaSamw * 134da6c28aaSamw * Encode the appropriate error code to the first 4-byte of the result 135da6c28aaSamw * buffer upon any door operation failure. 136da6c28aaSamw */ 137da6c28aaSamw static char * 138da6c28aaSamw smb_door_srv_err_hdlr(int stat, size_t *rbufsize) 139da6c28aaSamw { 140da6c28aaSamw char *rbuf; 141da6c28aaSamw 142da6c28aaSamw if ((rbuf = smb_dr_set_res_stat(stat, rbufsize)) == NULL) { 143da6c28aaSamw *rbufsize = 0; 144da6c28aaSamw return (NULL); 145da6c28aaSamw } 146da6c28aaSamw 147da6c28aaSamw return (rbuf); 148da6c28aaSamw } 149da6c28aaSamw 150da6c28aaSamw /* 151da6c28aaSamw * smb_door_srv_func 152da6c28aaSamw * 153da6c28aaSamw * This function will determine the opcode by decoding the first 4-byte of 154da6c28aaSamw * the argument buffer passed by a door client. The corresponding door 155da6c28aaSamw * operation will be looked up from the optab and get invoked. 156da6c28aaSamw * Basically, any door operation will takes the argument buffer as its 157da6c28aaSamw * parameter, and generates the result buffer. 158da6c28aaSamw */ 159da6c28aaSamw /*ARGSUSED*/ 160da6c28aaSamw void 161da6c28aaSamw smb_door_srv_func(void *cookie, char *argp, size_t arg_size, door_desc_t *dp, 162da6c28aaSamw uint_t n_desc) 163da6c28aaSamw { 164da6c28aaSamw char *resbuf = NULL, *tmpbuf = NULL; 165da6c28aaSamw size_t rbufsize = 0; 166da6c28aaSamw int opcode; 167da6c28aaSamw int err; 168da6c28aaSamw smb_dr_op_t smbop; 169da6c28aaSamw 170*3ad684d6Sjb150015 if ((cookie != SMB_DR_SVC_COOKIE) || (argp == NULL) || 171*3ad684d6Sjb150015 (arg_size < sizeof (uint32_t))) { 172*3ad684d6Sjb150015 (void) door_return(NULL, 0, NULL, 0); 173*3ad684d6Sjb150015 } 174*3ad684d6Sjb150015 175da6c28aaSamw if ((opcode = smb_dr_get_opcode(argp, arg_size)) < 0) { 176da6c28aaSamw tmpbuf = smb_door_srv_err_hdlr(SMB_DR_OP_ERR_DECODE, 177da6c28aaSamw &rbufsize); 178da6c28aaSamw goto door_return; 179da6c28aaSamw } 180da6c28aaSamw 181da6c28aaSamw syslog(LOG_DEBUG, "smb_door_srv_func: execute server routine" 182da6c28aaSamw "(opcode=%d)", opcode); 183da6c28aaSamw if (smb_dr_is_valid_opcode(opcode) != 0) { 184da6c28aaSamw tmpbuf = smb_door_srv_err_hdlr(SMB_DR_OP_ERR_INVALID_OPCODE, 185da6c28aaSamw &rbufsize); 186da6c28aaSamw } else { 187da6c28aaSamw smbop = smb_doorsrv_optab[opcode]; 188da6c28aaSamw if ((tmpbuf = smbop(argp + sizeof (opcode), 189da6c28aaSamw arg_size - sizeof (opcode), dp, n_desc, 190da6c28aaSamw &rbufsize, &err)) == NULL) 191da6c28aaSamw tmpbuf = smb_door_srv_err_hdlr(err, &rbufsize); 192da6c28aaSamw } 193da6c28aaSamw 194da6c28aaSamw door_return: 195da6c28aaSamw if (tmpbuf) { 196da6c28aaSamw if ((resbuf = (char *)alloca(rbufsize)) == NULL) 197da6c28aaSamw rbufsize = 0; 198da6c28aaSamw else 199da6c28aaSamw (void) memcpy(resbuf, tmpbuf, rbufsize); 200da6c28aaSamw free(tmpbuf); 201da6c28aaSamw } 202da6c28aaSamw 203da6c28aaSamw (void) door_return(resbuf, rbufsize, NULL, 0); 204da6c28aaSamw /*NOTREACHED*/ 205da6c28aaSamw } 206