1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License, Version 1.0 only
6 * (the "License"). You may not use this file except in compliance
7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22 /*
23 * Copyright 2002-2003 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 */
26
27 #include <sys/sysevent.h>
28 #include <sys/sysevent_impl.h>
29 #include <libsysevent.h>
30 #include <libsysevent_impl.h>
31 #include "../genunix/sysevent.h"
32
33 int
sysevent(uintptr_t addr,uint_t flags,int argc,const mdb_arg_t * argv)34 sysevent(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
35 {
36 if ((flags & DCMD_ADDRSPEC) == 0)
37 return (DCMD_USAGE);
38
39 if ((flags & DCMD_LOOP) == 0) {
40 if (mdb_pwalk_dcmd("sysevent", "sysevent", argc, argv,
41 addr) == -1) {
42 mdb_warn("can't walk sysevent queue");
43 return (DCMD_ERR);
44 }
45 return (DCMD_OK);
46 }
47
48 return (sysevent_buf(addr, flags, 0));
49 }
50
51 /*ARGSUSED*/
52 int
sysevent_handle(uintptr_t addr,uint_t flags,int argc,const mdb_arg_t * argv)53 sysevent_handle(uintptr_t addr, uint_t flags, int argc,
54 const mdb_arg_t *argv)
55 {
56 ssize_t channel_name_sz;
57 char channel_name[CLASS_LIST_FIELD_MAX];
58 subscriber_priv_t sub;
59 sysevent_impl_hdl_t sysevent_hdl;
60
61 if ((flags & DCMD_ADDRSPEC) == 0)
62 return (DCMD_USAGE);
63
64
65 if (argc != 0)
66 return (DCMD_USAGE);
67
68
69 if (mdb_vread(&sysevent_hdl, sizeof (sysevent_hdl),
70 (uintptr_t)addr) == -1) {
71 mdb_warn("failed to read sysevent handle at %p", addr);
72 return (DCMD_ERR);
73 }
74 if ((channel_name_sz = mdb_readstr(channel_name, CLASS_LIST_FIELD_MAX,
75 (uintptr_t)sysevent_hdl.sh_channel_name)) == -1) {
76 mdb_warn("failed to read channel name at %p",
77 sysevent_hdl.sh_channel_name);
78 return (DCMD_ERR);
79 }
80 if (channel_name_sz >= CLASS_LIST_FIELD_MAX - 1)
81 (void) strcpy(&channel_name[CLASS_LIST_FIELD_MAX - 4], "...");
82
83 if (sysevent_hdl.sh_type == SUBSCRIBER) {
84 if (mdb_vread(&sub, sizeof (sub),
85 (uintptr_t)sysevent_hdl.sh_priv_data) == -1) {
86 mdb_warn("failed to read sysevent handle at %p", addr);
87 return (DCMD_ERR);
88 }
89
90 if (DCMD_HDRSPEC(flags))
91 mdb_printf("%<u>%-?s %-24s %-13s %-5s %-?s"
92 "%</u>\n", "ADDR", "NAME", "TYPE", "ID",
93 "EVENT QUEUE ADDR");
94
95 mdb_printf("%-?p %-24s %-13s %-5lu %-?p\n",
96 addr, channel_name, "SUBSCRIBER", sysevent_hdl.sh_id,
97 (uintptr_t)sub.sp_evq_head);
98
99 } else {
100 if (DCMD_HDRSPEC(flags))
101 mdb_printf("%<u>%-?s %-24s %-13s %-5s %-?s"
102 "%</u>\n", "ADDR", "NAME",
103 "TYPE", "ID", "CLASS LIST ADDR");
104
105 mdb_printf("%-?p %-24s %-13s %-5lu %-?p\n",
106 addr, channel_name, "PUBLISHER", sysevent_hdl.sh_id,
107 (uintptr_t)sysevent_hdl.sh_priv_data +
108 offsetof(publisher_priv_t, pp_class_hash));
109 }
110
111 return (DCMD_OK);
112 }
113
114 static const mdb_dcmd_t dcmds[] = {
115 { "sysevent", "?[-v]", "print the contents of a sysevent queue",
116 sysevent},
117 { "sysevent_handle", ":", "print sysevent subscriber/publisher handle",
118 sysevent_handle},
119 { "sysevent_class_list", ":", "print sysevent class list",
120 sysevent_class_list },
121 { "sysevent_subclass_list", ":", "print sysevent subclass list",
122 sysevent_subclass_list },
123 { NULL }
124 };
125
126 int
sysevent_walk_init(mdb_walk_state_t * wsp)127 sysevent_walk_init(mdb_walk_state_t *wsp)
128 {
129 if (wsp->walk_addr == 0) {
130 mdb_warn("sysevent does not support global walks");
131 return (WALK_ERR);
132 }
133
134 return (WALK_NEXT);
135 }
136
137 int
sysevent_walk_step(mdb_walk_state_t * wsp)138 sysevent_walk_step(mdb_walk_state_t *wsp)
139 {
140 int status;
141 sysevent_queue_t se_q;
142
143 if (wsp->walk_addr == 0)
144 return (WALK_DONE);
145
146 if (mdb_vread(&se_q, sizeof (se_q), wsp->walk_addr) == -1) {
147 mdb_warn("failed to read sysevent queue at %p", wsp->walk_addr);
148 return (WALK_ERR);
149 }
150
151 status = wsp->walk_callback((uintptr_t)se_q.sq_ev, NULL,
152 wsp->walk_cbdata);
153
154 wsp->walk_addr = (uintptr_t)se_q.sq_next;
155
156 return (status);
157 }
158
159 static const mdb_walker_t walkers[] = {
160 { "sysevent", "walk sysevent buffer queue",
161 sysevent_walk_init, sysevent_walk_step,
162 NULL },
163 { "sysevent_class_list", "walk sysevent subsccription class list",
164 sysevent_class_list_walk_init, sysevent_class_list_walk_step,
165 sysevent_class_list_walk_fini },
166 { "sysevent_subclass_list", "walk sysevent subsccription subclass list",
167 sysevent_subclass_list_walk_init,
168 sysevent_subclass_list_walk_step, NULL },
169 { NULL }
170 };
171
172 static const mdb_modinfo_t modinfo = {
173 MDB_API_VERSION, dcmds, walkers
174 };
175
176 const mdb_modinfo_t *
_mdb_init(void)177 _mdb_init(void)
178 {
179 return (&modinfo);
180 }
181