1 /* $NetBSD: db_xxx.c,v 1.62 2009/07/19 02:37:33 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 1.62 2009/07/19 02:37:33 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 84 db_printf("This command is not currently supported.\n"); 85 } 86 87 #ifdef KGDB 88 void 89 db_kgdb_cmd(db_expr_t addr, bool haddr, 90 db_expr_t count, const char *modif) 91 { 92 kgdb_active++; 93 kgdb_trap(db_trap_type, DDB_REGS); 94 kgdb_active--; 95 } 96 #endif 97 98 void 99 db_show_files_cmd(db_expr_t addr, bool haddr, 100 db_expr_t count, const char *modif) 101 { 102 #ifdef _KERNEL /* XXX CRASH(8) */ 103 struct proc *p; 104 int i; 105 filedesc_t *fdp; 106 fdfile_t *ff; 107 file_t *fp; 108 struct vnode *vn; 109 bool full = false; 110 fdtab_t *dt; 111 112 if (modif[0] == 'f') 113 full = true; 114 115 p = (struct proc *) (uintptr_t) addr; 116 117 fdp = p->p_fd; 118 dt = fdp->fd_dt; 119 for (i = 0; i < dt->dt_nfiles; i++) { 120 if ((ff = dt->dt_ff[i]) == NULL) 121 continue; 122 123 fp = ff->ff_file; 124 125 /* Only look at vnodes... */ 126 if ((fp != NULL) && (fp->f_type == DTYPE_VNODE)) { 127 if (fp->f_data != NULL) { 128 vn = (struct vnode *) fp->f_data; 129 vfs_vnode_print(vn, full, db_printf); 130 131 #ifdef LOCKDEBUG 132 db_printf("\nv_uobj.vmobjlock lock details:\n"); 133 lockdebug_lock_print(&(vn->v_uobj.vmobjlock), 134 db_printf); 135 db_printf("\n"); 136 #endif 137 } 138 } 139 } 140 #endif 141 } 142 143 #ifdef AIO 144 void 145 db_show_aio_jobs(db_expr_t addr, bool haddr, 146 db_expr_t count, const char *modif) 147 { 148 149 aio_print_jobs(db_printf); 150 } 151 #endif 152 153 #ifdef MQUEUE 154 void 155 db_show_mqueue_cmd(db_expr_t addr, bool haddr, 156 db_expr_t count, const char *modif) 157 { 158 159 #ifdef _KERNEL /* XXX CRASH(8) */ 160 mqueue_print_list(db_printf); 161 #endif 162 } 163 #endif 164 165 void 166 db_show_module_cmd(db_expr_t addr, bool haddr, 167 db_expr_t count, const char *modif) 168 { 169 170 #ifdef _KERNEL /* XXX CRASH(8) */ 171 module_print_list(db_printf); 172 #endif 173 } 174 175 void 176 db_show_all_pools(db_expr_t addr, bool haddr, 177 db_expr_t count, const char *modif) 178 { 179 180 #ifdef _KERNEL /* XXX CRASH(8) */ 181 pool_printall(modif, db_printf); 182 #endif 183 } 184 185 void 186 db_show_all_vmems(db_expr_t addr, bool have_addr, 187 db_expr_t count, const char *modif) 188 { 189 190 #ifdef _KERNEL /* XXX CRASH(8) */ 191 vmem_printall(modif, db_printf); 192 #endif 193 } 194 195 void 196 db_dmesg(db_expr_t addr, bool haddr, db_expr_t count, const char *modif) 197 { 198 struct kern_msgbuf mb, *mbp; 199 db_expr_t print; 200 int newl, skip, i; 201 char *p, *bufdata, ch; 202 203 if (!db_read_int("msgbufenabled")) { 204 db_printf("message buffer not available\n"); 205 return; 206 } 207 mbp = (struct kern_msgbuf *)db_read_ptr("msgbufp"); 208 db_read_bytes((db_addr_t)mbp, sizeof(mb), (char *)&mb); 209 if (mb.msg_magic != MSG_MAGIC) { 210 db_printf("message buffer not available\n"); 211 return; 212 } 213 214 bufdata = &mbp->msg_bufc[0]; 215 216 if (haddr && addr < mb.msg_bufs) 217 print = addr; 218 else 219 print = mb.msg_bufs; 220 221 for (newl = skip = i = 0, p = bufdata + mb.msg_bufx; 222 i < mb.msg_bufs; i++, p++) { 223 if (p == bufdata + mb.msg_bufs) 224 p = bufdata; 225 if (i < mb.msg_bufs - print) { 226 continue; 227 } 228 db_read_bytes((db_addr_t)p, sizeof(ch), &ch); 229 /* Skip "\n<.*>" syslog sequences. */ 230 if (skip) { 231 if (ch == '>') 232 newl = skip = 0; 233 continue; 234 } 235 if (newl && ch == '<') { 236 skip = 1; 237 continue; 238 } 239 if (ch == '\0') 240 continue; 241 newl = ch == '\n'; 242 db_printf("%c", ch); 243 } 244 if (!newl) 245 db_printf("\n"); 246 } 247 248 void 249 db_show_sched_qs(db_expr_t addr, bool haddr, 250 db_expr_t count, const char *modif) 251 { 252 253 #ifdef _KERNEL /* XXX CRASH(8) */ 254 sched_print_runqueue(db_printf); 255 #endif 256 } 257