db_xxx.c revision 1.23
1 /* $NetBSD: db_xxx.c,v 1.23 2003/06/28 14:21:29 darrenr Exp $ */ 2 3 /* 4 * Copyright (c) 1982, 1986, 1989, 1991, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 * 35 * from: kern_proc.c 8.4 (Berkeley) 1/4/94 36 */ 37 38 /* 39 * Miscellaneous DDB functions that are intimate (xxx) with various 40 * data structures and functions used by the kernel (proc, callout). 41 */ 42 43 #include "opt_kgdb.h" 44 45 #include <sys/cdefs.h> 46 __KERNEL_RCSID(0, "$NetBSD: db_xxx.c,v 1.23 2003/06/28 14:21:29 darrenr Exp $"); 47 48 #include <sys/param.h> 49 #include <sys/systm.h> 50 #include <sys/kernel.h> 51 #include <sys/proc.h> 52 #include <sys/msgbuf.h> 53 54 #include <sys/callout.h> 55 #include <sys/signalvar.h> 56 #include <sys/resourcevar.h> 57 58 #include <machine/db_machdep.h> 59 60 #include <ddb/db_access.h> 61 #include <ddb/db_command.h> 62 #include <ddb/db_interface.h> 63 #include <ddb/db_lex.h> 64 #include <ddb/db_output.h> 65 #include <ddb/db_sym.h> 66 #include <ddb/db_extern.h> 67 #ifdef KGDB 68 #include <sys/kgdb.h> 69 #endif 70 71 void 72 db_kill_proc(db_expr_t addr, int haddr, db_expr_t count, char *modif) 73 { 74 struct proc *p; 75 db_expr_t pid, sig; 76 int t; 77 78 /* What pid? */ 79 if (!db_expression(&pid)) { 80 db_error("pid?\n"); 81 /*NOTREACHED*/ 82 } 83 /* What sig? */ 84 t = db_read_token(); 85 if (t == tCOMMA) { 86 if (!db_expression(&sig)) { 87 db_error("sig?\n"); 88 /*NOTREACHED*/ 89 } 90 } else { 91 db_unread_token(t); 92 sig = 15; 93 } 94 if (db_read_token() != tEOL) { 95 db_error("?\n"); 96 /*NOTREACHED*/ 97 } 98 99 p = pfind((pid_t)pid); 100 if (p == NULL) { 101 db_error("no such proc\n"); 102 /*NOTREACHED*/ 103 } 104 psignal(p, (int)sig); 105 } 106 107 #ifdef KGDB 108 void 109 db_kgdb_cmd(db_expr_t addr, int haddr, db_expr_t count, char *modif) 110 { 111 kgdb_active++; 112 kgdb_trap(db_trap_type, DDB_REGS); 113 kgdb_active--; 114 } 115 #endif 116 117 void 118 db_show_all_procs(db_expr_t addr, int haddr, db_expr_t count, char *modif) 119 { 120 int i; 121 122 char *mode; 123 struct proc *p, *pp, *cp; 124 struct lwp *l, *cl; 125 struct timeval tv[2]; 126 const struct proclist_desc *pd; 127 128 if (modif[0] == 0) 129 modif[0] = 'n'; /* default == normal mode */ 130 131 mode = strchr("mawln", modif[0]); 132 if (mode == NULL || *mode == 'm') { 133 db_printf("usage: show all procs [/a] [/n] [/w]\n"); 134 db_printf("\t/a == show process address info\n"); 135 db_printf("\t/l == show LWP info\n"); 136 db_printf("\t/n == show normal process info [default]\n"); 137 db_printf("\t/w == show process wait/emul info\n"); 138 return; 139 } 140 141 switch (*mode) { 142 case 'a': 143 db_printf(" PID %10s %18s %18s %18s\n", 144 "COMMAND", "STRUCT PROC *", "UAREA *", "VMSPACE/VM_MAP"); 145 break; 146 case 'l': 147 db_printf(" PID %4s S %7s %18s %18s %-12s\n", 148 "LID", "FLAGS", "STRUCT LWP *", "UAREA *", "WAIT"); 149 break; 150 case 'n': 151 db_printf(" PID %8s %8s %10s S %7s %4s %16s %7s\n", 152 "PPID", "PGRP", "UID", "FLAGS", "LWPS", "COMMAND", "WAIT"); 153 break; 154 case 'w': 155 db_printf(" PID %10s %8s %4s %5s %5s %-12s%s\n", 156 "COMMAND", "EMUL", "PRI", "UTIME", "STIME", 157 "WAIT-MSG", "WAIT-CHANNEL"); 158 break; 159 } 160 161 /* XXX LOCKING XXX */ 162 pd = proclists; 163 cp = curproc; 164 cl = curlwp; 165 for (pd = proclists; pd->pd_list != NULL; pd++) { 166 LIST_FOREACH(p, pd->pd_list, p_list) { 167 pp = p->p_pptr; 168 if (p->p_stat == 0) { 169 continue; 170 } 171 l = proc_representative_lwp(p); 172 db_printf("%c%-10d", " >"[cp == p], p->p_pid); 173 174 switch (*mode) { 175 176 case 'a': 177 db_printf("%10.10s %18p %18p %18p\n", 178 p->p_comm, p, 179 l != NULL ? l->l_addr : 0, 180 p->p_vmspace); 181 break; 182 case 'l': 183 l = LIST_FIRST(&p->p_lwps); 184 while (l != NULL) { 185 db_printf("%c%4d %d %#7x %18p %18p %s\n", 186 " >"[cl == l], l->l_lid, 187 l->l_stat, l->l_flag, l, 188 l->l_addr, 189 (l->l_wchan && l->l_wmesg) ? 190 l->l_wmesg : ""); 191 192 l = LIST_NEXT(l, l_sibling); 193 if (l) 194 db_printf("%11s",""); 195 } 196 break; 197 case 'n': 198 db_printf("%8d %8d %10d %d %#7x %4d %16s %7.7s\n", 199 pp ? pp->p_pid : -1, p->p_pgrp->pg_id, 200 p->p_cred->p_ruid, p->p_stat, p->p_flag, 201 p->p_nlwps, p->p_comm, 202 (p->p_nlwps != 1) ? "*" : ( 203 (l->l_wchan && l->l_wmesg) ? 204 l->l_wmesg : "")); 205 break; 206 207 case 'w': 208 db_printf("%10s %8s %4d", p->p_comm, 209 p->p_emul->e_name, 210 (l != NULL) ? l->l_priority : -1); 211 calcru(p, &tv[0], &tv[1], NULL); 212 for (i = 0; i < 2; ++i) { 213 db_printf("%4ld.%1ld", 214 (long)tv[i].tv_sec, 215 (long)tv[i].tv_usec/100000); 216 } 217 if (p->p_nlwps == 1) { 218 if (l->l_wchan && l->l_wmesg) { 219 db_printf(" %-12s", l->l_wmesg); 220 db_printsym( 221 (db_expr_t)(intptr_t)l->l_wchan, 222 DB_STGY_XTRN, db_printf); 223 } } else { 224 db_printf(" * "); 225 } 226 db_printf("\n"); 227 break; 228 229 } 230 } 231 } 232 } 233 234 void 235 db_dmesg(db_expr_t addr, int haddr, db_expr_t count, char *modif) 236 { 237 struct kern_msgbuf *mbp; 238 int ch, newl, skip, i; 239 char *p, *bufdata; 240 241 if (!msgbufenabled || msgbufp->msg_magic != MSG_MAGIC) { 242 db_printf("message buffer not available\n"); 243 return; 244 } 245 246 mbp = msgbufp; 247 bufdata = &mbp->msg_bufc[0]; 248 249 for (newl = skip = i = 0, p = bufdata + mbp->msg_bufx; 250 i < mbp->msg_bufs; i++, p++) { 251 if (p == bufdata + mbp->msg_bufs) 252 p = bufdata; 253 ch = *p; 254 /* Skip "\n<.*>" syslog sequences. */ 255 if (skip) { 256 if (ch == '>') 257 newl = skip = 0; 258 continue; 259 } 260 if (newl && ch == '<') { 261 skip = 1; 262 continue; 263 } 264 if (ch == '\0') 265 continue; 266 newl = ch == '\n'; 267 db_printf("%c", ch); 268 } 269 if (!newl) 270 db_printf("\n"); 271 } 272
Indexes created Tue Sep 30 20:09:53 GMT 2025