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 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 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 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 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 * 177 _mdb_init(void) 178 { 179 return (&modinfo); 180 } 181