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 __FBSDID("$FreeBSD: stable/12/usr.bin/iscsictl/periphs.c 326276 2017-11-27 15:37:16Z pfg $");
37
38 #include <sys/ioctl.h>
39 #include <sys/stdint.h>
40 #include <sys/types.h>
41 #include <sys/endian.h>
42 #include <sys/sbuf.h>
43
44 #include <stdio.h>
45 #include <stdlib.h>
46 #include <string.h>
47 #include <unistd.h>
48 #include <inttypes.h>
49 #include <limits.h>
50 #include <fcntl.h>
51
52 #include <cam/cam.h>
53 #include <cam/cam_debug.h>
54 #include <cam/cam_ccb.h>
55 #include <cam/scsi/scsi_all.h>
56 #include <cam/scsi/scsi_da.h>
57 #include <cam/scsi/scsi_pass.h>
58 #include <cam/scsi/scsi_message.h>
59 #include <cam/scsi/smp_all.h>
60 #include <cam/ata/ata_all.h>
61 #include <camlib.h>
62 #include <libxo/xo.h>
63
64 #include "iscsictl.h"
65
66 void
print_periphs(int session_id)67 print_periphs(int session_id)
68 {
69 union ccb ccb;
70 int bufsize, fd;
71 unsigned int i;
72 int have_path_id, skip_bus, skip_device;
73 path_id_t path_id;
74
75 if ((fd = open(XPT_DEVICE, O_RDWR)) == -1) {
76 xo_warn("couldn't open %s", XPT_DEVICE);
77 return;
78 }
79
80 /*
81 * First, iterate over the whole list to find the bus.
82 */
83
84 bzero(&ccb, sizeof(union ccb));
85
86 ccb.ccb_h.path_id = CAM_XPT_PATH_ID;
87 ccb.ccb_h.target_id = CAM_TARGET_WILDCARD;
88 ccb.ccb_h.target_lun = CAM_LUN_WILDCARD;
89
90 ccb.ccb_h.func_code = XPT_DEV_MATCH;
91 bufsize = sizeof(struct dev_match_result) * 100;
92 ccb.cdm.match_buf_len = bufsize;
93 ccb.cdm.matches = (struct dev_match_result *)malloc(bufsize);
94 if (ccb.cdm.matches == NULL) {
95 xo_warnx("can't malloc memory for matches");
96 close(fd);
97 return;
98 }
99 ccb.cdm.num_matches = 0;
100
101 /*
102 * We fetch all nodes, since we display most of them in the default
103 * case, and all in the verbose case.
104 */
105 ccb.cdm.num_patterns = 0;
106 ccb.cdm.pattern_buf_len = 0;
107
108 path_id = -1; /* Make GCC happy. */
109 have_path_id = 0;
110 skip_bus = 1;
111 skip_device = 1;
112
113 xo_open_container("devices");
114 xo_open_list("lun");
115 /*
116 * We do the ioctl multiple times if necessary, in case there are
117 * more than 100 nodes in the EDT.
118 */
119 do {
120 if (ioctl(fd, CAMIOCOMMAND, &ccb) == -1) {
121 xo_warn("error sending CAMIOCOMMAND ioctl");
122 break;
123 }
124
125 if ((ccb.ccb_h.status != CAM_REQ_CMP)
126 || ((ccb.cdm.status != CAM_DEV_MATCH_LAST)
127 && (ccb.cdm.status != CAM_DEV_MATCH_MORE))) {
128 xo_warnx("got CAM error %#x, CDM error %d\n",
129 ccb.ccb_h.status, ccb.cdm.status);
130 break;
131 }
132
133 for (i = 0; i < ccb.cdm.num_matches; i++) {
134 switch (ccb.cdm.matches[i].type) {
135 case DEV_MATCH_BUS: {
136 struct bus_match_result *bus_result;
137
138 bus_result = &ccb.cdm.matches[i].result.bus_result;
139
140 skip_bus = 1;
141
142 if (strcmp(bus_result->dev_name, "iscsi") != 0) {
143 //printf("not iscsi\n");
144 continue;
145 }
146
147 if ((int)bus_result->unit_number != session_id) {
148 //printf("wrong unit, %d != %d\n", bus_result->unit_number, session_id);
149 continue;
150 }
151 skip_bus = 0;
152 }
153 case DEV_MATCH_DEVICE: {
154 skip_device = 1;
155
156 if (skip_bus != 0)
157 continue;
158
159 skip_device = 0;
160 break;
161 }
162 case DEV_MATCH_PERIPH: {
163 struct periph_match_result *periph_result;
164
165 periph_result =
166 &ccb.cdm.matches[i].result.periph_result;
167
168 if (skip_device != 0)
169 continue;
170
171 if (strcmp(periph_result->periph_name, "pass") == 0)
172 continue;
173
174 xo_open_instance("lun");
175 xo_emit("{e:lun/%d}", periph_result->target_lun);
176 xo_emit("{Vq:device/%s%d} ",
177 periph_result->periph_name,
178 periph_result->unit_number);
179 xo_close_instance("lun");
180
181 if (have_path_id == 0) {
182 path_id = periph_result->path_id;
183 have_path_id = 1;
184 }
185
186 break;
187 }
188 default:
189 fprintf(stdout, "unknown match type\n");
190 break;
191 }
192 }
193
194 } while ((ccb.ccb_h.status == CAM_REQ_CMP)
195 && (ccb.cdm.status == CAM_DEV_MATCH_MORE));
196 xo_close_list("lun");
197
198 xo_emit("{e:scbus/%d}{e:bus/%d}{e:target/%d}",
199 have_path_id ? (int)path_id : -1, 0, have_path_id ? 0 : -1);
200 xo_close_container("devices");
201
202 close(fd);
203 }
204
205