1 /*-
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
4 * Copyright (c) 1997-2007 Kenneth D. Merry
5 * Copyright (c) 2012 The FreeBSD Foundation
6 * All rights reserved.
7 *
8 * Portions of this software were developed by Edward Tomasz Napierala
9 * under sponsorship from the FreeBSD Foundation.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 * 3. The name of the author may not be used to endorse or promote products
20 * derived from this software without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 */
34
35 #include <sys/cdefs.h>
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
50 #include <cam/cam.h>
51 #include <cam/cam_debug.h>
52 #include <cam/cam_ccb.h>
53 #include <cam/scsi/scsi_all.h>
54 #include <cam/scsi/scsi_da.h>
55 #include <cam/scsi/scsi_pass.h>
56 #include <cam/scsi/scsi_message.h>
57 #include <cam/scsi/smp_all.h>
58 #include <cam/ata/ata_all.h>
59 #include <camlib.h>
60 #include <libxo/xo.h>
61
62 #include "iscsictl.h"
63
64 void
print_periphs(int session_id)65 print_periphs(int session_id)
66 {
67 union ccb ccb;
68 int bufsize, fd;
69 unsigned int i;
70 int have_path_id, skip_bus, skip_device;
71 path_id_t path_id;
72
73 if ((fd = open(XPT_DEVICE, O_RDWR)) == -1) {
74 xo_warn("couldn't open %s", XPT_DEVICE);
75 return;
76 }
77
78 /*
79 * First, iterate over the whole list to find the bus.
80 */
81
82 bzero(&ccb, sizeof(union ccb));
83
84 ccb.ccb_h.path_id = CAM_XPT_PATH_ID;
85 ccb.ccb_h.target_id = CAM_TARGET_WILDCARD;
86 ccb.ccb_h.target_lun = CAM_LUN_WILDCARD;
87
88 ccb.ccb_h.func_code = XPT_DEV_MATCH;
89 bufsize = sizeof(struct dev_match_result) * 100;
90 ccb.cdm.match_buf_len = bufsize;
91 ccb.cdm.matches = (struct dev_match_result *)malloc(bufsize);
92 if (ccb.cdm.matches == NULL) {
93 xo_warnx("can't malloc memory for matches");
94 close(fd);
95 return;
96 }
97 ccb.cdm.num_matches = 0;
98
99 /*
100 * We fetch all nodes, since we display most of them in the default
101 * case, and all in the verbose case.
102 */
103 ccb.cdm.num_patterns = 0;
104 ccb.cdm.pattern_buf_len = 0;
105
106 path_id = -1; /* Make GCC happy. */
107 have_path_id = 0;
108 skip_bus = 1;
109 skip_device = 1;
110
111 xo_open_container("devices");
112 xo_open_list("lun");
113 /*
114 * We do the ioctl multiple times if necessary, in case there are
115 * more than 100 nodes in the EDT.
116 */
117 do {
118 if (ioctl(fd, CAMIOCOMMAND, &ccb) == -1) {
119 xo_warn("error sending CAMIOCOMMAND ioctl");
120 break;
121 }
122
123 if ((ccb.ccb_h.status != CAM_REQ_CMP)
124 || ((ccb.cdm.status != CAM_DEV_MATCH_LAST)
125 && (ccb.cdm.status != CAM_DEV_MATCH_MORE))) {
126 xo_warnx("got CAM error %#x, CDM error %d\n",
127 ccb.ccb_h.status, ccb.cdm.status);
128 break;
129 }
130
131 for (i = 0; i < ccb.cdm.num_matches; i++) {
132 switch (ccb.cdm.matches[i].type) {
133 case DEV_MATCH_BUS: {
134 struct bus_match_result *bus_result;
135
136 bus_result = &ccb.cdm.matches[i].result.bus_result;
137
138 skip_bus = 1;
139
140 if (strcmp(bus_result->dev_name, "iscsi") != 0) {
141 //printf("not iscsi\n");
142 continue;
143 }
144
145 if ((int)bus_result->unit_number != session_id) {
146 //printf("wrong unit, %d != %d\n", bus_result->unit_number, session_id);
147 continue;
148 }
149 skip_bus = 0;
150 }
151 case DEV_MATCH_DEVICE: {
152 skip_device = 1;
153
154 if (skip_bus != 0)
155 continue;
156
157 skip_device = 0;
158 break;
159 }
160 case DEV_MATCH_PERIPH: {
161 struct periph_match_result *periph_result;
162
163 periph_result =
164 &ccb.cdm.matches[i].result.periph_result;
165
166 if (skip_device != 0)
167 continue;
168
169 if (strcmp(periph_result->periph_name, "pass") == 0)
170 continue;
171
172 xo_open_instance("lun");
173 xo_emit("{e:lun/%d}", periph_result->target_lun);
174 xo_emit("{Vq:device/%s%d} ",
175 periph_result->periph_name,
176 periph_result->unit_number);
177 xo_close_instance("lun");
178
179 if (have_path_id == 0) {
180 path_id = periph_result->path_id;
181 have_path_id = 1;
182 }
183
184 break;
185 }
186 default:
187 fprintf(stdout, "unknown match type\n");
188 break;
189 }
190 }
191
192 } while ((ccb.ccb_h.status == CAM_REQ_CMP)
193 && (ccb.cdm.status == CAM_DEV_MATCH_MORE));
194 xo_close_list("lun");
195
196 xo_emit("{e:scbus/%d}{e:bus/%d}{e:target/%d}",
197 have_path_id ? (int)path_id : -1, 0, have_path_id ? 0 : -1);
198 xo_close_container("devices");
199
200 close(fd);
201 }
202
203