Annotation of src/sys/ddb/db_xxx.c, Revision 1.64.2.1
1.64.2.1! yamt 1: /* $NetBSD: db_xxx.c,v 1.64 2011/06/12 03:35:51 rmind Exp $ */
1.1 gwr 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.
1.26 agc 15: * 3. Neither the name of the University nor the names of its contributors
1.1 gwr 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: */
1.15 lukem 38:
1.46 dsl 39: #include <sys/cdefs.h>
1.64.2.1! yamt 40: __KERNEL_RCSID(0, "$NetBSD: db_xxx.c,v 1.64 2011/06/12 03:35:51 rmind Exp $");
1.46 dsl 41:
1.57 ad 42: #ifdef _KERNEL_OPT
1.21 briggs 43: #include "opt_kgdb.h"
1.53 ad 44: #include "opt_aio.h"
1.62 rmind 45: #include "opt_mqueue.h"
1.57 ad 46: #endif
47:
1.59 mrg 48: #ifndef _KERNEL
49: #include <stdbool.h>
50: #endif
51:
1.1 gwr 52: #include <sys/param.h>
53: #include <sys/systm.h>
54: #include <sys/kernel.h>
55: #include <sys/proc.h>
1.12 atatat 56: #include <sys/msgbuf.h>
1.1 gwr 57: #include <sys/callout.h>
1.49 blymn 58: #include <sys/file.h>
59: #include <sys/filedesc.h>
60: #include <sys/lockdebug.h>
1.1 gwr 61: #include <sys/signalvar.h>
1.3 ross 62: #include <sys/resourcevar.h>
1.34 he 63: #include <sys/pool.h>
1.57 ad 64: #include <sys/uio.h>
1.38 elad 65: #include <sys/kauth.h>
1.47 rmind 66: #include <sys/mqueue.h>
1.49 blymn 67: #include <sys/vnode.h>
1.54 ad 68: #include <sys/module.h>
1.55 ad 69: #include <sys/cpu.h>
1.56 yamt 70: #include <sys/vmem.h>
1.1 gwr 71:
1.57 ad 72: #include <ddb/ddb.h>
1.58 mrg 73: #include <ddb/db_user.h>
1.1 gwr 74:
1.21 briggs 75: #ifdef KGDB
76: #include <sys/kgdb.h>
77: #endif
1.1 gwr 78:
79: void
1.42 matt 80: db_kill_proc(db_expr_t addr, bool haddr,
1.40 christos 81: db_expr_t count, const char *modif)
1.1 gwr 82: {
1.63 christos 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: }
1.64.2.1! yamt 109: /* We might stop when the mutex is held or when not */
! 110: t = mutex_tryenter(proc_lock);
! 111: #ifdef DIAGNOSTIC
! 112: if (!t) {
! 113: db_error("could not acquire proc_lock mutex\n");
! 114: /*NOTREACHED*/
! 115: }
! 116: #endif
1.63 christos 117: p = proc_find((pid_t)pid);
118: if (p == NULL) {
1.64.2.1! yamt 119: if (t)
! 120: mutex_exit(proc_lock);
! 121: db_error("no such proc\n");
! 122: /*NOTREACHED*/
1.63 christos 123: }
124: KSI_INIT(&ksi);
125: ksi.ksi_signo = sig;
126: ksi.ksi_code = SI_USER;
127: ksi.ksi_pid = 0;
128: ksi.ksi_uid = 0;
1.64.2.1! yamt 129: mutex_enter(p->p_lock);
1.63 christos 130: kpsignal2(p, &ksi);
1.64.2.1! yamt 131: mutex_exit(p->p_lock);
! 132: if (t)
! 133: mutex_exit(proc_lock);
1.63 christos 134: #else
1.57 ad 135: db_printf("This command is not currently supported.\n");
1.63 christos 136: #endif
1.1 gwr 137: }
1.21 briggs 138:
139: #ifdef KGDB
140: void
1.42 matt 141: db_kgdb_cmd(db_expr_t addr, bool haddr,
1.40 christos 142: db_expr_t count, const char *modif)
1.21 briggs 143: {
144: kgdb_active++;
145: kgdb_trap(db_trap_type, DDB_REGS);
146: kgdb_active--;
147: }
148: #endif
1.1 gwr 149:
150: void
1.49 blymn 151: db_show_files_cmd(db_expr_t addr, bool haddr,
152: db_expr_t count, const char *modif)
153: {
1.57 ad 154: #ifdef _KERNEL /* XXX CRASH(8) */
1.49 blymn 155: struct proc *p;
156: int i;
1.50 blymn 157: filedesc_t *fdp;
158: fdfile_t *ff;
159: file_t *fp;
1.49 blymn 160: struct vnode *vn;
161: bool full = false;
1.61 ad 162: fdtab_t *dt;
1.49 blymn 163:
164: if (modif[0] == 'f')
165: full = true;
166:
1.52 rmind 167: p = (struct proc *) (uintptr_t) addr;
1.49 blymn 168:
1.50 blymn 169: fdp = p->p_fd;
1.61 ad 170: dt = fdp->fd_dt;
171: for (i = 0; i < dt->dt_nfiles; i++) {
172: if ((ff = dt->dt_ff[i]) == NULL)
1.49 blymn 173: continue;
174:
175: fp = ff->ff_file;
176:
177: /* Only look at vnodes... */
1.51 blymn 178: if ((fp != NULL) && (fp->f_type == DTYPE_VNODE)) {
179: if (fp->f_data != NULL) {
180: vn = (struct vnode *) fp->f_data;
181: vfs_vnode_print(vn, full, db_printf);
1.49 blymn 182:
183: #ifdef LOCKDEBUG
1.51 blymn 184: db_printf("\nv_uobj.vmobjlock lock details:\n");
1.64 rmind 185: lockdebug_lock_print(vn->v_uobj.vmobjlock,
1.51 blymn 186: db_printf);
187: db_printf("\n");
1.49 blymn 188: #endif
1.51 blymn 189: }
1.49 blymn 190: }
191: }
1.57 ad 192: #endif
1.49 blymn 193: }
194:
1.53 ad 195: #ifdef AIO
1.49 blymn 196: void
1.43 rmind 197: db_show_aio_jobs(db_expr_t addr, bool haddr,
198: db_expr_t count, const char *modif)
199: {
1.57 ad 200:
1.43 rmind 201: aio_print_jobs(db_printf);
202: }
1.53 ad 203: #endif
1.43 rmind 204:
1.62 rmind 205: #ifdef MQUEUE
1.43 rmind 206: void
1.47 rmind 207: db_show_mqueue_cmd(db_expr_t addr, bool haddr,
208: db_expr_t count, const char *modif)
209: {
1.57 ad 210:
211: #ifdef _KERNEL /* XXX CRASH(8) */
1.47 rmind 212: mqueue_print_list(db_printf);
1.57 ad 213: #endif
1.47 rmind 214: }
1.62 rmind 215: #endif
1.47 rmind 216:
217: void
1.54 ad 218: db_show_module_cmd(db_expr_t addr, bool haddr,
219: db_expr_t count, const char *modif)
220: {
1.57 ad 221:
222: #ifdef _KERNEL /* XXX CRASH(8) */
1.54 ad 223: module_print_list(db_printf);
1.57 ad 224: #endif
1.12 atatat 225: }
226:
227: void
1.42 matt 228: db_show_all_pools(db_expr_t addr, bool haddr,
1.40 christos 229: db_expr_t count, const char *modif)
1.33 yamt 230: {
231:
1.57 ad 232: #ifdef _KERNEL /* XXX CRASH(8) */
1.33 yamt 233: pool_printall(modif, db_printf);
1.57 ad 234: #endif
1.33 yamt 235: }
236:
237: void
1.56 yamt 238: db_show_all_vmems(db_expr_t addr, bool have_addr,
239: db_expr_t count, const char *modif)
240: {
241:
1.57 ad 242: #ifdef _KERNEL /* XXX CRASH(8) */
1.56 yamt 243: vmem_printall(modif, db_printf);
1.57 ad 244: #endif
1.56 yamt 245: }
246:
247: void
1.60 ad 248: db_dmesg(db_expr_t addr, bool haddr, db_expr_t count, const char *modif)
1.12 atatat 249: {
1.60 ad 250: struct kern_msgbuf mb, *mbp;
1.25 simonb 251: db_expr_t print;
1.60 ad 252: int newl, skip, i;
253: char *p, *bufdata, ch;
1.22 atatat 254:
1.60 ad 255: if (!db_read_int("msgbufenabled")) {
256: db_printf("message buffer not available\n");
257: return;
258: }
259: mbp = (struct kern_msgbuf *)db_read_ptr("msgbufp");
260: db_read_bytes((db_addr_t)mbp, sizeof(mb), (char *)&mb);
261: if (mb.msg_magic != MSG_MAGIC) {
1.22 atatat 262: db_printf("message buffer not available\n");
263: return;
264: }
1.12 atatat 265:
266: bufdata = &mbp->msg_bufc[0];
267:
1.60 ad 268: if (haddr && addr < mb.msg_bufs)
1.25 simonb 269: print = addr;
270: else
1.60 ad 271: print = mb.msg_bufs;
1.25 simonb 272:
1.60 ad 273: for (newl = skip = i = 0, p = bufdata + mb.msg_bufx;
274: i < mb.msg_bufs; i++, p++) {
275: if (p == bufdata + mb.msg_bufs)
1.12 atatat 276: p = bufdata;
1.60 ad 277: if (i < mb.msg_bufs - print) {
1.25 simonb 278: continue;
1.60 ad 279: }
280: db_read_bytes((db_addr_t)p, sizeof(ch), &ch);
1.12 atatat 281: /* Skip "\n<.*>" syslog sequences. */
282: if (skip) {
283: if (ch == '>')
284: newl = skip = 0;
285: continue;
286: }
287: if (newl && ch == '<') {
288: skip = 1;
289: continue;
290: }
291: if (ch == '\0')
292: continue;
293: newl = ch == '\n';
294: db_printf("%c", ch);
295: }
296: if (!newl)
297: db_printf("\n");
1.28 thorpej 298: }
299:
300: void
1.42 matt 301: db_show_sched_qs(db_expr_t addr, bool haddr,
1.40 christos 302: db_expr_t count, const char *modif)
1.28 thorpej 303: {
1.44 yamt 304:
1.57 ad 305: #ifdef _KERNEL /* XXX CRASH(8) */
1.44 yamt 306: sched_print_runqueue(db_printf);
1.57 ad 307: #endif
1.1 gwr 308: }
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