1 /* 2 * Copyright (c) 1997-2007 Kenneth D. Merry 3 * Copyright (c) 2012 The FreeBSD Foundation 4 * All rights reserved. 5 * 6 * Portions of this software were developed by Edward Tomasz Napierala 7 * under sponsorship from the FreeBSD Foundation. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. The name of the author may not be used to endorse or promote products 18 * derived from this software 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 33 #include <sys/cdefs.h> 34 __FBSDID("$FreeBSD$"); 35 36 #include <sys/ioctl.h> 37 #include <sys/stdint.h> 38 #include <sys/types.h> 39 #include <sys/endian.h> 40 #include <sys/sbuf.h> 41 42 #include <stdio.h> 43 #include <stdlib.h> 44 #include <string.h> 45 #include <unistd.h> 46 #include <inttypes.h> 47 #include <limits.h> 48 #include <fcntl.h> 49 #include <err.h> 50 51 #include <cam/cam.h> 52 #include <cam/cam_debug.h> 53 #include <cam/cam_ccb.h> 54 #include <cam/scsi/scsi_all.h> 55 #include <cam/scsi/scsi_da.h> 56 #include <cam/scsi/scsi_pass.h> 57 #include <cam/scsi/scsi_message.h> 58 #include <cam/scsi/smp_all.h> 59 #include <cam/ata/ata_all.h> 60 #include <camlib.h> 61 62 #include "iscsictl.h" 63 64 void 65 print_periphs(int session_id) 66 { 67 union ccb ccb; 68 int bufsize, fd; 69 unsigned int i; 70 int skip_bus, skip_device; 71 72 if ((fd = open(XPT_DEVICE, O_RDWR)) == -1) { 73 warn("couldn't open %s", XPT_DEVICE); 74 return; 75 } 76 77 /* 78 * First, iterate over the whole list to find the bus. 79 */ 80 81 bzero(&ccb, sizeof(union ccb)); 82 83 ccb.ccb_h.path_id = CAM_XPT_PATH_ID; 84 ccb.ccb_h.target_id = CAM_TARGET_WILDCARD; 85 ccb.ccb_h.target_lun = CAM_LUN_WILDCARD; 86 87 ccb.ccb_h.func_code = XPT_DEV_MATCH; 88 bufsize = sizeof(struct dev_match_result) * 100; 89 ccb.cdm.match_buf_len = bufsize; 90 ccb.cdm.matches = (struct dev_match_result *)malloc(bufsize); 91 if (ccb.cdm.matches == NULL) { 92 warnx("can't malloc memory for matches"); 93 close(fd); 94 return; 95 } 96 ccb.cdm.num_matches = 0; 97 98 /* 99 * We fetch all nodes, since we display most of them in the default 100 * case, and all in the verbose case. 101 */ 102 ccb.cdm.num_patterns = 0; 103 ccb.cdm.pattern_buf_len = 0; 104 105 /* 106 * We do the ioctl multiple times if necessary, in case there are 107 * more than 100 nodes in the EDT. 108 */ 109 do { 110 if (ioctl(fd, CAMIOCOMMAND, &ccb) == -1) { 111 warn("error sending CAMIOCOMMAND ioctl"); 112 break; 113 } 114 115 if ((ccb.ccb_h.status != CAM_REQ_CMP) 116 || ((ccb.cdm.status != CAM_DEV_MATCH_LAST) 117 && (ccb.cdm.status != CAM_DEV_MATCH_MORE))) { 118 warnx("got CAM error %#x, CDM error %d\n", 119 ccb.ccb_h.status, ccb.cdm.status); 120 break; 121 } 122 123 skip_bus = 1; 124 skip_device = 1; 125 126 for (i = 0; i < ccb.cdm.num_matches; i++) { 127 switch (ccb.cdm.matches[i].type) { 128 case DEV_MATCH_BUS: { 129 struct bus_match_result *bus_result; 130 131 bus_result = &ccb.cdm.matches[i].result.bus_result; 132 133 skip_bus = 1; 134 135 if (strcmp(bus_result->dev_name, "iscsi") != 0) { 136 //printf("not iscsi\n"); 137 continue; 138 } 139 140 if ((int)bus_result->unit_number != session_id) { 141 //printf("wrong unit, %d != %d\n", bus_result->unit_number, session_id); 142 continue; 143 } 144 145 skip_bus = 0; 146 } 147 case DEV_MATCH_DEVICE: { 148 skip_device = 1; 149 150 if (skip_bus != 0) 151 continue; 152 153 skip_device = 0; 154 155 break; 156 } 157 case DEV_MATCH_PERIPH: { 158 struct periph_match_result *periph_result; 159 160 periph_result = 161 &ccb.cdm.matches[i].result.periph_result; 162 163 if (skip_device != 0) 164 continue; 165 166 if (strcmp(periph_result->periph_name, "pass") == 0) 167 continue; 168 169 fprintf(stdout, "%s%d ", 170 periph_result->periph_name, 171 periph_result->unit_number); 172 173 break; 174 } 175 default: 176 fprintf(stdout, "unknown match type\n"); 177 break; 178 } 179 } 180 181 } while ((ccb.ccb_h.status == CAM_REQ_CMP) 182 && (ccb.cdm.status == CAM_DEV_MATCH_MORE)); 183 184 close(fd); 185 } 186 187