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 #pragma ident "%Z%%M% %I% %E% SMI" 28 29 #include <sys/sysevent.h> 30 #include <sys/sysevent_impl.h> 31 #include <libsysevent.h> 32 #include <libsysevent_impl.h> 33 #include "../genunix/sysevent.h" 34 35 int 36 sysevent(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv) 37 { 38 if ((flags & DCMD_ADDRSPEC) == 0) 39 return (DCMD_USAGE); 40 41 if ((flags & DCMD_LOOP) == 0) { 42 if (mdb_pwalk_dcmd("sysevent", "sysevent", argc, argv, 43 addr) == -1) { 44 mdb_warn("can't walk sysevent queue"); 45 return (DCMD_ERR); 46 } 47 return (DCMD_OK); 48 } 49 50 return (sysevent_buf(addr, flags, 0)); 51 } 52 53 /*ARGSUSED*/ 54 int 55 sysevent_handle(uintptr_t addr, uint_t flags, int argc, 56 const mdb_arg_t *argv) 57 { 58 ssize_t channel_name_sz; 59 char channel_name[CLASS_LIST_FIELD_MAX]; 60 subscriber_priv_t sub; 61 sysevent_impl_hdl_t sysevent_hdl; 62 63 if ((flags & DCMD_ADDRSPEC) == 0) 64 return (DCMD_USAGE); 65 66 67 if (argc != 0) 68 return (DCMD_USAGE); 69 70 71 if (mdb_vread(&sysevent_hdl, sizeof (sysevent_hdl), 72 (uintptr_t)addr) == -1) { 73 mdb_warn("failed to read sysevent handle at %p", addr); 74 return (DCMD_ERR); 75 } 76 if ((channel_name_sz = mdb_readstr(channel_name, CLASS_LIST_FIELD_MAX, 77 (uintptr_t)sysevent_hdl.sh_channel_name)) == -1) { 78 mdb_warn("failed to read channel name at %p", 79 sysevent_hdl.sh_channel_name); 80 return (DCMD_ERR); 81 } 82 if (channel_name_sz >= CLASS_LIST_FIELD_MAX - 1) 83 (void) strcpy(&channel_name[CLASS_LIST_FIELD_MAX - 4], "..."); 84 85 if (sysevent_hdl.sh_type == SUBSCRIBER) { 86 if (mdb_vread(&sub, sizeof (sub), 87 (uintptr_t)sysevent_hdl.sh_priv_data) == -1) { 88 mdb_warn("failed to read sysevent handle at %p", addr); 89 return (DCMD_ERR); 90 } 91 92 if (DCMD_HDRSPEC(flags)) 93 mdb_printf("%<u>%-?s %-24s %-13s %-5s %-?s" 94 "%</u>\n", "ADDR", "NAME", "TYPE", "ID", 95 "EVENT QUEUE ADDR"); 96 97 mdb_printf("%-?p %-24s %-13s %-5lu %-?p\n", 98 addr, channel_name, "SUBSCRIBER", sysevent_hdl.sh_id, 99 (uintptr_t)sub.sp_evq_head); 100 101 } else { 102 if (DCMD_HDRSPEC(flags)) 103 mdb_printf("%<u>%-?s %-24s %-13s %-5s %-?s" 104 "%</u>\n", "ADDR", "NAME", 105 "TYPE", "ID", "CLASS LIST ADDR"); 106 107 mdb_printf("%-?p %-24s %-13s %-5lu %-?p\n", 108 addr, channel_name, "PUBLISHER", sysevent_hdl.sh_id, 109 (uintptr_t)sysevent_hdl.sh_priv_data + 110 offsetof(publisher_priv_t, pp_class_hash)); 111 } 112 113 return (DCMD_OK); 114 } 115 116 static const mdb_dcmd_t dcmds[] = { 117 { "sysevent", "?[-v]", "print the contents of a sysevent queue", 118 sysevent}, 119 { "sysevent_handle", ":", "print sysevent subscriber/publisher handle", 120 sysevent_handle}, 121 { "sysevent_class_list", ":", "print sysevent class list", 122 sysevent_class_list }, 123 { "sysevent_subclass_list", ":", "print sysevent subclass list", 124 sysevent_subclass_list }, 125 { NULL } 126 }; 127 128 int 129 sysevent_walk_init(mdb_walk_state_t *wsp) 130 { 131 if (wsp->walk_addr == NULL) { 132 mdb_warn("sysevent does not support global walks"); 133 return (WALK_ERR); 134 } 135 136 return (WALK_NEXT); 137 } 138 139 int 140 sysevent_walk_step(mdb_walk_state_t *wsp) 141 { 142 int status; 143 sysevent_queue_t se_q; 144 145 if (wsp->walk_addr == NULL) 146 return (WALK_DONE); 147 148 if (mdb_vread(&se_q, sizeof (se_q), wsp->walk_addr) == -1) { 149 mdb_warn("failed to read sysevent queue at %p", wsp->walk_addr); 150 return (WALK_ERR); 151 } 152 153 status = wsp->walk_callback((uintptr_t)se_q.sq_ev, NULL, 154 wsp->walk_cbdata); 155 156 wsp->walk_addr = (uintptr_t)se_q.sq_next; 157 158 return (status); 159 } 160 161 static const mdb_walker_t walkers[] = { 162 { "sysevent", "walk sysevent buffer queue", 163 sysevent_walk_init, sysevent_walk_step, 164 NULL }, 165 { "sysevent_class_list", "walk sysevent subsccription class list", 166 sysevent_class_list_walk_init, sysevent_class_list_walk_step, 167 sysevent_class_list_walk_fini }, 168 { "sysevent_subclass_list", "walk sysevent subsccription subclass list", 169 sysevent_subclass_list_walk_init, 170 sysevent_subclass_list_walk_step, NULL }, 171 { NULL } 172 }; 173 174 static const mdb_modinfo_t modinfo = { 175 MDB_API_VERSION, dcmds, walkers 176 }; 177 178 const mdb_modinfo_t * 179 _mdb_init(void) 180 { 181 return (&modinfo); 182 } 183