db_xxx.c revision 1.64
1 /* $NetBSD: db_xxx.c,v 1.64 2011/06/12 03:35:51 rmind 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. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * 31 * from: kern_proc.c 8.4 (Berkeley) 1/4/94 32 */ 33 34 /* 35 * Miscellaneous DDB functions that are intimate (xxx) with various 36 * data structures and functions used by the kernel (proc, callout). 37 */ 38 39 #include <sys/cdefs.h> 40 __KERNEL_RCSID(0, "$NetBSD: db_xxx.c,v 1.64 2011/06/12 03:35:51 rmind Exp $"); 41 42 #ifdef _KERNEL_OPT 43 #include "opt_kgdb.h" 44 #include "opt_aio.h" 45 #include "opt_mqueue.h" 46 #endif 47 48 #ifndef _KERNEL 49 #include <stdbool.h> 50 #endif 51 52 #include <sys/param.h> 53 #include <sys/systm.h> 54 #include <sys/kernel.h> 55 #include <sys/proc.h> 56 #include <sys/msgbuf.h> 57 #include <sys/callout.h> 58 #include <sys/file.h> 59 #include <sys/filedesc.h> 60 #include <sys/lockdebug.h> 61 #include <sys/signalvar.h> 62 #include <sys/resourcevar.h> 63 #include <sys/pool.h> 64 #include <sys/uio.h> 65 #include <sys/kauth.h> 66 #include <sys/mqueue.h> 67 #include <sys/vnode.h> 68 #include <sys/module.h> 69 #include <sys/cpu.h> 70 #include <sys/vmem.h> 71 72 #include <ddb/ddb.h> 73 #include <ddb/db_user.h> 74 75 #ifdef KGDB 76 #include <sys/kgdb.h> 77 #endif 78 79 void 80 db_kill_proc(db_expr_t addr, bool haddr, 81 db_expr_t count, const char *modif) 82 { 83 #ifdef _KERNEL /* XXX CRASH(8) */ 84 struct proc *p; 85 ksiginfo_t ksi; 86 db_expr_t pid, sig; 87 int t; 88 89 /* What pid? */ 90 if (!db_expression(&pid)) { 91 db_error("pid?\n"); 92 /*NOTREACHED*/ 93 } 94 /* What sig? */ 95 t = db_read_token(); 96 if (t == tCOMMA) { 97 if (!db_expression(&sig)) { 98 db_error("sig?\n"); 99 /*NOTREACHED*/ 100 } 101 } else { 102 db_unread_token(t); 103 sig = 15; 104 } 105 if (db_read_token() != tEOL) { 106 db_error("?\n"); 107 /*NOTREACHED*/ 108 } 109 110 p = proc_find((pid_t)pid); 111 if (p == NULL) { 112 db_error("no such proc\n"); 113 /*NOTREACHED*/ 114 } 115 KSI_INIT(&ksi); 116 ksi.ksi_signo = sig; 117 ksi.ksi_code = SI_USER; 118 ksi.ksi_pid = 0; 119 ksi.ksi_uid = 0; 120 kpsignal2(p, &ksi); 121 #else 122 db_printf("This command is not currently supported.\n"); 123 #endif 124 } 125 126 #ifdef KGDB 127 void 128 db_kgdb_cmd(db_expr_t addr, bool haddr, 129 db_expr_t count, const char *modif) 130 { 131 kgdb_active++; 132 kgdb_trap(db_trap_type, DDB_REGS); 133 kgdb_active--; 134 } 135 #endif 136 137 void 138 db_show_files_cmd(db_expr_t addr, bool haddr, 139 db_expr_t count, const char *modif) 140 { 141 #ifdef _KERNEL /* XXX CRASH(8) */ 142 struct proc *p; 143 int i; 144 filedesc_t *fdp; 145 fdfile_t *ff; 146 file_t *fp; 147 struct vnode *vn; 148 bool full = false; 149 fdtab_t *dt; 150 151 if (modif[0] == 'f') 152 full = true; 153 154 p = (struct proc *) (uintptr_t) addr; 155 156 fdp = p->p_fd; 157 dt = fdp->fd_dt; 158 for (i = 0; i < dt->dt_nfiles; i++) { 159 if ((ff = dt->dt_ff[i]) == NULL) 160 continue; 161 162 fp = ff->ff_file; 163 164 /* Only look at vnodes... */ 165 if ((fp != NULL) && (fp->f_type == DTYPE_VNODE)) { 166 if (fp->f_data != NULL) { 167 vn = (struct vnode *) fp->f_data; 168 vfs_vnode_print(vn, full, db_printf); 169 170 #ifdef LOCKDEBUG 171 db_printf("\nv_uobj.vmobjlock lock details:\n"); 172 lockdebug_lock_print(vn->v_uobj.vmobjlock, 173 db_printf); 174 db_printf("\n"); 175 #endif 176 } 177 } 178 } 179 #endif 180 } 181 182 #ifdef AIO 183 void 184 db_show_aio_jobs(db_expr_t addr, bool haddr, 185 db_expr_t count, const char *modif) 186 { 187 188 aio_print_jobs(db_printf); 189 } 190 #endif 191 192 #ifdef MQUEUE 193 void 194 db_show_mqueue_cmd(db_expr_t addr, bool haddr, 195 db_expr_t count, const char *modif) 196 { 197 198 #ifdef _KERNEL /* XXX CRASH(8) */ 199 mqueue_print_list(db_printf); 200 #endif 201 } 202 #endif 203 204 void 205 db_show_module_cmd(db_expr_t addr, bool haddr, 206 db_expr_t count, const char *modif) 207 { 208 209 #ifdef _KERNEL /* XXX CRASH(8) */ 210 module_print_list(db_printf); 211 #endif 212 } 213 214 void 215 db_show_all_pools(db_expr_t addr, bool haddr, 216 db_expr_t count, const char *modif) 217 { 218 219 #ifdef _KERNEL /* XXX CRASH(8) */ 220 pool_printall(modif, db_printf); 221 #endif 222 } 223 224 void 225 db_show_all_vmems(db_expr_t addr, bool have_addr, 226 db_expr_t count, const char *modif) 227 { 228 229 #ifdef _KERNEL /* XXX CRASH(8) */ 230 vmem_printall(modif, db_printf); 231 #endif 232 } 233 234 void 235 db_dmesg(db_expr_t addr, bool haddr, db_expr_t count, const char *modif) 236 { 237 struct kern_msgbuf mb, *mbp; 238 db_expr_t print; 239 int newl, skip, i; 240 char *p, *bufdata, ch; 241 242 if (!db_read_int("msgbufenabled")) { 243 db_printf("message buffer not available\n"); 244 return; 245 } 246 mbp = (struct kern_msgbuf *)db_read_ptr("msgbufp"); 247 db_read_bytes((db_addr_t)mbp, sizeof(mb), (char *)&mb); 248 if (mb.msg_magic != MSG_MAGIC) { 249 db_printf("message buffer not available\n"); 250 return; 251 } 252 253 bufdata = &mbp->msg_bufc[0]; 254 255 if (haddr && addr < mb.msg_bufs) 256 print = addr; 257 else 258 print = mb.msg_bufs; 259 260 for (newl = skip = i = 0, p = bufdata + mb.msg_bufx; 261 i < mb.msg_bufs; i++, p++) { 262 if (p == bufdata + mb.msg_bufs) 263 p = bufdata; 264 if (i < mb.msg_bufs - print) { 265 continue; 266 } 267 db_read_bytes((db_addr_t)p, sizeof(ch), &ch); 268 /* Skip "\n<.*>" syslog sequences. */ 269 if (skip) { 270 if (ch == '>') 271 newl = skip = 0; 272 continue; 273 } 274 if (newl && ch == '<') { 275 skip = 1; 276 continue; 277 } 278 if (ch == '\0') 279 continue; 280 newl = ch == '\n'; 281 db_printf("%c", ch); 282 } 283 if (!newl) 284 db_printf("\n"); 285 } 286 287 void 288 db_show_sched_qs(db_expr_t addr, bool haddr, 289 db_expr_t count, const char *modif) 290 { 291 292 #ifdef _KERNEL /* XXX CRASH(8) */ 293 sched_print_runqueue(db_printf); 294 #endif 295 } 296
Indexes created Tue Sep 30 20:09:53 GMT 2025