1 /* $OpenBSD: procmap.c,v 1.48 2013/04/24 14:29:00 deraadt Exp $ */ 2 /* $NetBSD: pmap.c,v 1.1 2002/09/01 20:32:44 atatat Exp $ */ 3 4 /* 5 * Copyright (c) 2002 The NetBSD Foundation, Inc. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to The NetBSD Foundation 9 * by Andrew Brown. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 #include <sys/types.h> 34 #include <sys/param.h> 35 #include <sys/time.h> 36 #include <sys/exec.h> 37 #include <sys/proc.h> 38 #include <sys/vnode.h> 39 #include <sys/mount.h> 40 #include <sys/uio.h> 41 #include <sys/namei.h> 42 #include <sys/sysctl.h> 43 44 #include <uvm/uvm.h> 45 #include <uvm/uvm_device.h> 46 #include <uvm/uvm_amap.h> 47 48 #include <ufs/ufs/quota.h> 49 #include <ufs/ufs/inode.h> 50 #undef doff_t 51 #undef IN_ACCESS 52 #undef i_size 53 #undef i_devvp 54 #include <isofs/cd9660/iso.h> 55 #include <isofs/cd9660/cd9660_node.h> 56 57 #include <kvm.h> 58 #include <fcntl.h> 59 #include <errno.h> 60 #include <err.h> 61 #include <stdlib.h> 62 #include <stddef.h> 63 #include <unistd.h> 64 #include <stdio.h> 65 #include <limits.h> 66 #include <string.h> 67 68 /* 69 * stolen (and munged) from #include <uvm/uvm_object.h> 70 */ 71 #define UVM_OBJ_IS_VNODE(uobj) ((uobj)->pgops == uvm_vnodeops) 72 #define UVM_OBJ_IS_AOBJ(uobj) ((uobj)->pgops == aobj_pager) 73 #define UVM_OBJ_IS_DEVICE(uobj) ((uobj)->pgops == uvm_deviceops) 74 75 #define PRINT_VMSPACE 0x00000001 76 #define PRINT_VM_MAP 0x00000002 77 #define PRINT_VM_MAP_HEADER 0x00000004 78 #define PRINT_VM_MAP_ENTRY 0x00000008 79 #define DUMP_NAMEI_CACHE 0x00000010 80 81 struct cache_entry { 82 LIST_ENTRY(cache_entry) ce_next; 83 struct vnode *ce_vp, *ce_pvp; 84 u_long ce_cid, ce_pcid; 85 unsigned int ce_nlen; 86 char ce_name[256]; 87 }; 88 89 LIST_HEAD(cache_head, cache_entry) lcache; 90 void *uvm_vnodeops, *uvm_deviceops, *aobj_pager; 91 u_long kernel_map_addr; 92 int debug, verbose; 93 int print_all, print_map, print_maps, print_solaris, print_ddb, print_amap; 94 int rwx = VM_PROT_READ | VM_PROT_WRITE | VM_PROT_EXECUTE; 95 rlim_t maxssiz; 96 97 struct sum { 98 unsigned long s_am_nslots; 99 unsigned long s_am_maxslots; 100 unsigned long s_am_nusedslots; 101 }; 102 103 struct kbit { 104 /* 105 * size of data chunk 106 */ 107 size_t k_size; 108 109 /* 110 * something for printf() and something for kvm_read() 111 */ 112 union { 113 void *k_addr_p; 114 u_long k_addr_ul; 115 } k_addr; 116 117 /* 118 * where we actually put the "stuff" 119 */ 120 union { 121 char data[1]; 122 struct vmspace vmspace; 123 struct vm_map vm_map; 124 struct vm_map_entry vm_map_entry; 125 struct vnode vnode; 126 struct uvm_object uvm_object; 127 struct mount mount; 128 struct namecache namecache; 129 struct inode inode; 130 struct iso_node iso_node; 131 struct uvm_device uvm_device; 132 struct vm_amap vm_amap; 133 } k_data; 134 }; 135 136 /* the size of the object in the kernel */ 137 #define S(x) ((x)->k_size) 138 /* the address of the object in kernel, two forms */ 139 #define A(x) ((x)->k_addr.k_addr_ul) 140 #define P(x) ((x)->k_addr.k_addr_p) 141 /* the data from the kernel */ 142 #define D(x,d) (&((x)->k_data.d)) 143 144 /* suck the data from the kernel */ 145 #define _KDEREF(kd, addr, dst, sz) do { \ 146 ssize_t len; \ 147 len = kvm_read((kd), (addr), (dst), (sz)); \ 148 if (len != (sz)) \ 149 errx(1, "%s == %ld vs. %lu @ %lx", \ 150 kvm_geterr(kd), (long)len, (unsigned long)(sz), (addr)); \ 151 } while (0/*CONSTCOND*/) 152 153 /* suck the data using the structure */ 154 #define KDEREF(kd, item) _KDEREF((kd), A(item), D(item, data), S(item)) 155 156 struct nlist nl[] = { 157 { "_maxsmap" }, 158 #define NL_MAXSSIZ 0 159 { "_uvm_vnodeops" }, 160 #define NL_UVM_VNODEOPS 1 161 { "_uvm_deviceops" }, 162 #define NL_UVM_DEVICEOPS 2 163 { "_aobj_pager" }, 164 #define NL_AOBJ_PAGER 3 165 { "_kernel_map" }, 166 #define NL_KERNEL_MAP 4 167 { NULL } 168 }; 169 170 void load_symbols(kvm_t *); 171 void process_map(kvm_t *, pid_t, struct kinfo_proc *, struct sum *); 172 struct vm_map_entry *load_vm_map_entries(kvm_t *, struct vm_map_entry *, 173 struct vm_map_entry *); 174 void unload_vm_map_entries(struct vm_map_entry *); 175 size_t dump_vm_map_entry(kvm_t *, struct kbit *, struct vm_map_entry *, 176 struct sum *); 177 char *findname(kvm_t *, struct kbit *, struct vm_map_entry *, struct kbit *, 178 struct kbit *, struct kbit *); 179 int search_cache(kvm_t *, struct kbit *, char **, char *, size_t); 180 static void __dead usage(void); 181 static pid_t strtopid(const char *); 182 void print_sum(struct sum *, struct sum *); 183 184 /* 185 * uvm_map address tree implementation. 186 */ 187 static int no_impl(void *, void *); 188 static int 189 no_impl(void *p, void *q) 190 { 191 errx(1, "uvm_map address comparison not implemented"); 192 return 0; 193 } 194 195 RB_GENERATE(uvm_map_addr, vm_map_entry, daddrs.addr_entry, no_impl); 196 197 int 198 main(int argc, char *argv[]) 199 { 200 char errbuf[_POSIX2_LINE_MAX], *kmem = NULL, *kernel = NULL; 201 struct kinfo_proc *kproc; 202 struct sum total_sum; 203 int many, ch, rc; 204 kvm_t *kd; 205 pid_t pid = -1; 206 gid_t gid; 207 208 while ((ch = getopt(argc, argv, "AaD:dlmM:N:p:Prsvx")) != -1) { 209 switch (ch) { 210 case 'A': 211 print_amap = 1; 212 break; 213 case 'a': 214 print_all = 1; 215 break; 216 case 'd': 217 print_ddb = 1; 218 break; 219 case 'D': 220 debug = atoi(optarg); 221 break; 222 case 'l': 223 print_maps = 1; 224 break; 225 case 'm': 226 print_map = 1; 227 break; 228 case 'M': 229 kmem = optarg; 230 break; 231 case 'N': 232 kernel = optarg; 233 break; 234 case 'p': 235 pid = strtopid(optarg); 236 break; 237 case 'P': 238 pid = getpid(); 239 break; 240 case 's': 241 print_solaris = 1; 242 break; 243 case 'v': 244 verbose = 1; 245 break; 246 case 'r': 247 case 'x': 248 errx(1, "-%c option not implemented, sorry", ch); 249 /*NOTREACHED*/ 250 default: 251 usage(); 252 } 253 } 254 255 /* 256 * Discard setgid privileges if not the running kernel so that bad 257 * guys can't print interesting stuff from kernel memory. 258 */ 259 gid = getgid(); 260 if (kernel != NULL || kmem != NULL) 261 if (setresgid(gid, gid, gid) == -1) 262 err(1, "setresgid"); 263 264 argc -= optind; 265 argv += optind; 266 267 /* more than one "process" to dump? */ 268 many = (argc > 1 - (pid == -1 ? 0 : 1)) ? 1 : 0; 269 270 /* apply default */ 271 if (print_all + print_map + print_maps + print_solaris + 272 print_ddb == 0) 273 print_solaris = 1; 274 275 /* start by opening libkvm */ 276 kd = kvm_openfiles(kernel, kmem, NULL, O_RDONLY, errbuf); 277 278 if (kernel == NULL && kmem == NULL) 279 if (setresgid(gid, gid, gid) == -1) 280 err(1, "setresgid"); 281 282 if (kd == NULL) 283 errx(1, "%s", errbuf); 284 285 /* get "bootstrap" addresses from kernel */ 286 load_symbols(kd); 287 288 memset(&total_sum, 0, sizeof(total_sum)); 289 290 do { 291 struct sum sum; 292 293 memset(&sum, 0, sizeof(sum)); 294 295 if (pid == -1) { 296 if (argc == 0) 297 pid = getppid(); 298 else { 299 pid = strtopid(argv[0]); 300 argv++; 301 argc--; 302 } 303 } 304 305 /* find the process id */ 306 if (pid == 0) 307 kproc = NULL; 308 else { 309 kproc = kvm_getprocs(kd, KERN_PROC_PID, pid, 310 sizeof(struct kinfo_proc), &rc); 311 if (kproc == NULL || rc == 0) { 312 errno = ESRCH; 313 warn("%d", pid); 314 pid = -1; 315 continue; 316 } 317 } 318 319 /* dump it */ 320 if (many) { 321 if (kproc) 322 printf("process %d:\n", pid); 323 else 324 printf("kernel:\n"); 325 } 326 327 process_map(kd, pid, kproc, &sum); 328 if (print_amap) 329 print_sum(&sum, &total_sum); 330 pid = -1; 331 } while (argc > 0); 332 333 if (print_amap) 334 print_sum(&total_sum, NULL); 335 336 /* done. go away. */ 337 rc = kvm_close(kd); 338 if (rc == -1) 339 err(1, "kvm_close"); 340 341 return (0); 342 } 343 344 void 345 print_sum(struct sum *sum, struct sum *total_sum) 346 { 347 const char *t = total_sum == NULL ? "total " : ""; 348 printf("%samap allocated slots: %lu\n", t, sum->s_am_maxslots); 349 printf("%samap mapped slots: %lu\n", t, sum->s_am_nslots); 350 printf("%samap used slots: %lu\n", t, sum->s_am_nusedslots); 351 352 if (total_sum) { 353 total_sum->s_am_maxslots += sum->s_am_maxslots; 354 total_sum->s_am_nslots += sum->s_am_nslots; 355 total_sum->s_am_nusedslots += sum->s_am_nusedslots; 356 } 357 } 358 359 void 360 process_map(kvm_t *kd, pid_t pid, struct kinfo_proc *proc, struct sum *sum) 361 { 362 struct kbit kbit[3], *vmspace, *vm_map; 363 struct vm_map_entry *vm_map_entry; 364 size_t total = 0; 365 char *thing; 366 uid_t uid; 367 int vmmap_flags; 368 369 if ((uid = getuid())) { 370 if (pid == 0) { 371 warnx("kernel map is restricted"); 372 return; 373 } 374 if (uid != proc->p_uid) { 375 warnx("other users' process maps are restricted"); 376 return; 377 } 378 } 379 380 vmspace = &kbit[0]; 381 vm_map = &kbit[1]; 382 383 A(vmspace) = 0; 384 A(vm_map) = 0; 385 386 if (pid > 0) { 387 A(vmspace) = (u_long)proc->p_vmspace; 388 S(vmspace) = sizeof(struct vmspace); 389 KDEREF(kd, vmspace); 390 thing = "proc->p_vmspace.vm_map"; 391 } else { 392 A(vmspace) = 0; 393 S(vmspace) = 0; 394 thing = "kernel_map"; 395 } 396 397 if (pid > 0 && (debug & PRINT_VMSPACE)) { 398 printf("proc->p_vmspace %p = {", P(vmspace)); 399 printf(" vm_refcnt = %d,", D(vmspace, vmspace)->vm_refcnt); 400 printf(" vm_shm = %p,\n", D(vmspace, vmspace)->vm_shm); 401 printf(" vm_rssize = %d,", D(vmspace, vmspace)->vm_rssize); 402 printf(" vm_swrss = %d,", D(vmspace, vmspace)->vm_swrss); 403 printf(" vm_tsize = %d,", D(vmspace, vmspace)->vm_tsize); 404 printf(" vm_dsize = %d,\n", D(vmspace, vmspace)->vm_dsize); 405 printf(" vm_ssize = %d,", D(vmspace, vmspace)->vm_ssize); 406 printf(" vm_taddr = %p,", D(vmspace, vmspace)->vm_taddr); 407 printf(" vm_daddr = %p,\n", D(vmspace, vmspace)->vm_daddr); 408 printf(" vm_maxsaddr = %p,", 409 D(vmspace, vmspace)->vm_maxsaddr); 410 printf(" vm_minsaddr = %p }\n", 411 D(vmspace, vmspace)->vm_minsaddr); 412 } 413 414 S(vm_map) = sizeof(struct vm_map); 415 if (pid > 0) { 416 A(vm_map) = A(vmspace); 417 memcpy(D(vm_map, vm_map), &D(vmspace, vmspace)->vm_map, 418 S(vm_map)); 419 } else { 420 A(vm_map) = kernel_map_addr; 421 KDEREF(kd, vm_map); 422 } 423 if (debug & PRINT_VM_MAP) { 424 printf("%s %p = {", thing, P(vm_map)); 425 426 printf(" pmap = %p,\n", D(vm_map, vm_map)->pmap); 427 printf(" lock = <struct lock>\n"); 428 printf(" size = %lx,", D(vm_map, vm_map)->size); 429 printf(" ref_count = %d,", D(vm_map, vm_map)->ref_count); 430 printf(" ref_lock = <struct simplelock>,\n"); 431 printf(" min_offset-max_offset = 0x%lx-0x%lx\n", 432 D(vm_map, vm_map)->min_offset, 433 D(vm_map, vm_map)->max_offset); 434 printf(" b_start-b_end = 0x%lx-0x%lx\n", 435 D(vm_map, vm_map)->b_start, 436 D(vm_map, vm_map)->b_end); 437 printf(" s_start-s_end = 0x%lx-0x%lx\n", 438 D(vm_map, vm_map)->s_start, 439 D(vm_map, vm_map)->s_end); 440 vmmap_flags = D(vm_map, vm_map)->flags; 441 printf(" flags = %x <%s%s%s%s%s%s >,\n", 442 vmmap_flags, 443 vmmap_flags & VM_MAP_PAGEABLE ? " PAGEABLE" : "", 444 vmmap_flags & VM_MAP_INTRSAFE ? " INTRSAFE" : "", 445 vmmap_flags & VM_MAP_WIREFUTURE ? " WIREFUTURE" : "", 446 vmmap_flags & VM_MAP_BUSY ? " BUSY" : "", 447 vmmap_flags & VM_MAP_WANTLOCK ? " WANTLOCK" : "", 448 #if VM_MAP_TOPDOWN > 0 449 vmmap_flags & VM_MAP_TOPDOWN ? " TOPDOWN" : 450 #endif 451 ""); 452 printf(" timestamp = %u }\n", D(vm_map, vm_map)->timestamp); 453 } 454 if (print_ddb) { 455 printf("MAP %p: [0x%lx->0x%lx]\n", P(vm_map), 456 D(vm_map, vm_map)->min_offset, 457 D(vm_map, vm_map)->max_offset); 458 printf("\tsz=%ld, ref=%d, version=%d, flags=0x%x\n", 459 D(vm_map, vm_map)->size, 460 D(vm_map, vm_map)->ref_count, 461 D(vm_map, vm_map)->timestamp, 462 D(vm_map, vm_map)->flags); 463 printf("\tpmap=%p(resident=<unknown>)\n", 464 D(vm_map, vm_map)->pmap); 465 } 466 467 /* headers */ 468 #ifdef DISABLED_HEADERS 469 if (print_map) 470 printf("%-*s %-*s rwx RWX CPY NCP I W A\n", 471 (int)sizeof(long) * 2 + 2, "Start", 472 (int)sizeof(long) * 2 + 2, "End"); 473 if (print_maps) 474 printf("%-*s %-*s rwxp %-*s Dev Inode File\n", 475 (int)sizeof(long) * 2 + 0, "Start", 476 (int)sizeof(long) * 2 + 0, "End", 477 (int)sizeof(long) * 2 + 0, "Offset"); 478 if (print_solaris) 479 printf("%-*s %*s Protection File\n", 480 (int)sizeof(long) * 2 + 0, "Start", 481 (int)sizeof(int) * 2 - 1, "Size "); 482 #endif 483 if (print_all) 484 printf("%-*s %-*s %*s %-*s rwxpc RWX I/W/A Dev %*s - File\n", 485 (int)sizeof(long) * 2, "Start", 486 (int)sizeof(long) * 2, "End", 487 (int)sizeof(int) * 2, "Size ", 488 (int)sizeof(long) * 2, "Offset", 489 (int)sizeof(int) * 2, "Inode"); 490 491 /* these are the "sub entries" */ 492 RB_ROOT(&D(vm_map, vm_map)->addr) = 493 load_vm_map_entries(kd, RB_ROOT(&D(vm_map, vm_map)->addr), NULL); 494 RB_FOREACH(vm_map_entry, uvm_map_addr, &D(vm_map, vm_map)->addr) 495 total += dump_vm_map_entry(kd, vmspace, vm_map_entry, sum); 496 unload_vm_map_entries(RB_ROOT(&D(vm_map, vm_map)->addr)); 497 498 if (print_solaris) 499 printf("%-*s %8luK\n", 500 (int)sizeof(void *) * 2 - 2, " total", 501 (unsigned long)total); 502 if (print_all) 503 printf("%-*s %9luk\n", 504 (int)sizeof(void *) * 4 - 1, " total", 505 (unsigned long)total); 506 } 507 508 void 509 load_symbols(kvm_t *kd) 510 { 511 int rc, i; 512 513 rc = kvm_nlist(kd, &nl[0]); 514 if (rc == -1) 515 errx(1, "%s == %d", kvm_geterr(kd), rc); 516 for (i = 0; i < sizeof(nl)/sizeof(nl[0]); i++) 517 if (nl[i].n_value == 0 && nl[i].n_name) 518 printf("%s not found\n", nl[i].n_name); 519 520 uvm_vnodeops = (void*)nl[NL_UVM_VNODEOPS].n_value; 521 uvm_deviceops = (void*)nl[NL_UVM_DEVICEOPS].n_value; 522 aobj_pager = (void*)nl[NL_AOBJ_PAGER].n_value; 523 524 _KDEREF(kd, nl[NL_MAXSSIZ].n_value, &maxssiz, 525 sizeof(maxssiz)); 526 _KDEREF(kd, nl[NL_KERNEL_MAP].n_value, &kernel_map_addr, 527 sizeof(kernel_map_addr)); 528 } 529 530 /* 531 * Recreate the addr tree of vm_map in local memory. 532 */ 533 struct vm_map_entry * 534 load_vm_map_entries(kvm_t *kd, struct vm_map_entry *kptr, 535 struct vm_map_entry *parent) 536 { 537 static struct kbit map_ent; 538 struct vm_map_entry *result; 539 540 if (kptr == NULL) 541 return NULL; 542 543 A(&map_ent) = (u_long)kptr; 544 S(&map_ent) = sizeof(struct vm_map_entry); 545 KDEREF(kd, &map_ent); 546 547 result = malloc(sizeof(*result)); 548 if (result == NULL) 549 err(1, "malloc"); 550 memcpy(result, D(&map_ent, vm_map_entry), sizeof(struct vm_map_entry)); 551 552 /* 553 * Recurse to download rest of the tree. 554 */ 555 RB_LEFT(result, daddrs.addr_entry) = load_vm_map_entries(kd, 556 RB_LEFT(result, daddrs.addr_entry), result); 557 RB_RIGHT(result, daddrs.addr_entry) = load_vm_map_entries(kd, 558 RB_RIGHT(result, daddrs.addr_entry), result); 559 RB_PARENT(result, daddrs.addr_entry) = parent; 560 return result; 561 } 562 563 /* 564 * Release the addr tree of vm_map. 565 */ 566 void 567 unload_vm_map_entries(struct vm_map_entry *ent) 568 { 569 if (ent == NULL) 570 return; 571 572 unload_vm_map_entries(RB_LEFT(ent, daddrs.addr_entry)); 573 unload_vm_map_entries(RB_RIGHT(ent, daddrs.addr_entry)); 574 free(ent); 575 } 576 577 size_t 578 dump_vm_map_entry(kvm_t *kd, struct kbit *vmspace, 579 struct vm_map_entry *vme, struct sum *sum) 580 { 581 struct kbit kbit[4], *uvm_obj, *vp, *vfs, *amap; 582 ino_t inode = 0; 583 dev_t dev = 0; 584 size_t sz = 0; 585 char *name; 586 587 uvm_obj = &kbit[0]; 588 vp = &kbit[1]; 589 vfs = &kbit[2]; 590 amap = &kbit[3]; 591 592 A(uvm_obj) = 0; 593 A(vp) = 0; 594 A(vfs) = 0; 595 596 if (debug & PRINT_VM_MAP_ENTRY) { 597 printf("%s = {", "vm_map_entry"); 598 printf(" start = %lx,", vme->start); 599 printf(" end = %lx,", vme->end); 600 printf(" object.uvm_obj/sub_map = %p,\n", vme->object.uvm_obj); 601 printf(" offset = %lx,", (unsigned long)vme->offset); 602 printf(" etype = %x <%s%s%s%s%s >,", vme->etype, 603 vme->etype & UVM_ET_OBJ ? " OBJ" : "", 604 vme->etype & UVM_ET_SUBMAP ? " SUBMAP" : "", 605 vme->etype & UVM_ET_COPYONWRITE ? " COW" : "", 606 vme->etype & UVM_ET_NEEDSCOPY ? " NEEDSCOPY" : "", 607 vme->etype & UVM_ET_HOLE ? " HOLE" : ""); 608 printf(" protection = %x,\n", vme->protection); 609 printf(" max_protection = %x,", vme->max_protection); 610 printf(" inheritance = %d,", vme->inheritance); 611 printf(" wired_count = %d,\n", vme->wired_count); 612 printf(" aref = <struct vm_aref>,"); 613 printf(" advice = %d,", vme->advice); 614 printf(" flags = %x <%s%s > }\n", vme->flags, 615 vme->flags & UVM_MAP_STATIC ? " STATIC" : "", 616 vme->flags & UVM_MAP_KMEM ? " KMEM" : ""); 617 } 618 619 A(vp) = 0; 620 A(uvm_obj) = 0; 621 622 if (vme->object.uvm_obj != NULL) { 623 P(uvm_obj) = vme->object.uvm_obj; 624 S(uvm_obj) = sizeof(struct uvm_object); 625 KDEREF(kd, uvm_obj); 626 if (UVM_ET_ISOBJ(vme) && 627 UVM_OBJ_IS_VNODE(D(uvm_obj, uvm_object))) { 628 P(vp) = P(uvm_obj); 629 S(vp) = sizeof(struct vnode); 630 KDEREF(kd, vp); 631 } 632 } 633 634 if (vme->aref.ar_amap != NULL) { 635 P(amap) = vme->aref.ar_amap; 636 S(amap) = sizeof(struct vm_amap); 637 KDEREF(kd, amap); 638 } 639 640 A(vfs) = 0; 641 642 if (P(vp) != NULL && D(vp, vnode)->v_mount != NULL) { 643 P(vfs) = D(vp, vnode)->v_mount; 644 S(vfs) = sizeof(struct mount); 645 KDEREF(kd, vfs); 646 D(vp, vnode)->v_mount = D(vfs, mount); 647 } 648 649 /* 650 * dig out the device number and inode number from certain 651 * file system types. 652 */ 653 #define V_DATA_IS(vp, type, d, i) do { \ 654 struct kbit data; \ 655 P(&data) = D(vp, vnode)->v_data; \ 656 S(&data) = sizeof(*D(&data, type)); \ 657 KDEREF(kd, &data); \ 658 dev = D(&data, type)->d; \ 659 inode = D(&data, type)->i; \ 660 } while (0/*CONSTCOND*/) 661 662 if (A(vp) && 663 D(vp, vnode)->v_type == VREG && 664 D(vp, vnode)->v_data != NULL) { 665 switch (D(vp, vnode)->v_tag) { 666 case VT_UFS: 667 case VT_EXT2FS: 668 V_DATA_IS(vp, inode, i_dev, i_number); 669 break; 670 case VT_ISOFS: 671 V_DATA_IS(vp, iso_node, i_dev, i_number); 672 break; 673 case VT_NON: 674 case VT_NFS: 675 case VT_MFS: 676 case VT_MSDOSFS: 677 case VT_PROCFS: 678 default: 679 break; 680 } 681 } 682 683 name = findname(kd, vmspace, vme, vp, vfs, uvm_obj); 684 685 if (print_map) { 686 printf("0x%lx 0x%lx %c%c%c %c%c%c %s %s %d %d %d", 687 vme->start, vme->end, 688 (vme->protection & VM_PROT_READ) ? 'r' : '-', 689 (vme->protection & VM_PROT_WRITE) ? 'w' : '-', 690 (vme->protection & VM_PROT_EXECUTE) ? 'x' : '-', 691 (vme->max_protection & VM_PROT_READ) ? 'r' : '-', 692 (vme->max_protection & VM_PROT_WRITE) ? 'w' : '-', 693 (vme->max_protection & VM_PROT_EXECUTE) ? 'x' : '-', 694 (vme->etype & UVM_ET_COPYONWRITE) ? "COW" : "NCOW", 695 (vme->etype & UVM_ET_NEEDSCOPY) ? "NC" : "NNC", 696 vme->inheritance, vme->wired_count, 697 vme->advice); 698 if (verbose) { 699 if (inode) 700 printf(" %d,%d %u", 701 major(dev), minor(dev), inode); 702 if (name[0]) 703 printf(" %s", name); 704 } 705 printf("\n"); 706 } 707 708 if (print_maps) 709 printf("%0*lx-%0*lx %c%c%c%c %0*lx %02x:%02x %llu %s\n", 710 (int)sizeof(void *) * 2, vme->start, 711 (int)sizeof(void *) * 2, vme->end, 712 (vme->protection & VM_PROT_READ) ? 'r' : '-', 713 (vme->protection & VM_PROT_WRITE) ? 'w' : '-', 714 (vme->protection & VM_PROT_EXECUTE) ? 'x' : '-', 715 (vme->etype & UVM_ET_COPYONWRITE) ? 'p' : 's', 716 (int)sizeof(void *) * 2, 717 (unsigned long)vme->offset, 718 major(dev), minor(dev), (unsigned long long)inode, 719 inode ? name : ""); 720 721 if (print_ddb) { 722 printf(" - <lost address>: 0x%lx->0x%lx: " 723 "obj=%p/0x%lx, amap=%p/%d\n", 724 vme->start, vme->end, 725 vme->object.uvm_obj, (unsigned long)vme->offset, 726 vme->aref.ar_amap, vme->aref.ar_pageoff); 727 printf("\tsubmap=%c, cow=%c, nc=%c, prot(max)=%d/%d, inh=%d, " 728 "wc=%d, adv=%d\n", 729 (vme->etype & UVM_ET_SUBMAP) ? 'T' : 'F', 730 (vme->etype & UVM_ET_COPYONWRITE) ? 'T' : 'F', 731 (vme->etype & UVM_ET_NEEDSCOPY) ? 'T' : 'F', 732 vme->protection, vme->max_protection, 733 vme->inheritance, vme->wired_count, vme->advice); 734 if (inode && verbose) 735 printf("\t(dev=%d,%d ino=%llu [%s] [%p])\n", 736 major(dev), minor(dev), (unsigned long long)inode, 737 inode ? name : "", P(vp)); 738 else if (name[0] == ' ' && verbose) 739 printf("\t(%s)\n", &name[2]); 740 } 741 742 if (print_solaris) { 743 char prot[30]; 744 745 prot[0] = '\0'; 746 prot[1] = '\0'; 747 if (vme->protection & VM_PROT_READ) 748 strlcat(prot, "/read", sizeof(prot)); 749 if (vme->protection & VM_PROT_WRITE) 750 strlcat(prot, "/write", sizeof(prot)); 751 if (vme->protection & VM_PROT_EXECUTE) 752 strlcat(prot, "/exec", sizeof(prot)); 753 754 sz = (size_t)((vme->end - vme->start) / 1024); 755 printf("%0*lX %6luK %-15s %s\n", 756 (int)sizeof(void *) * 2, (unsigned long)vme->start, 757 (unsigned long)sz, &prot[1], name); 758 } 759 760 if (print_all) { 761 sz = (size_t)((vme->end - vme->start) / 1024); 762 printf("%0*lx-%0*lx %7luk %0*lx %c%c%c%c%c (%c%c%c) %d/%d/%d %02d:%02d %7llu - %s", 763 (int)sizeof(void *) * 2, vme->start, (int)sizeof(void *) * 2, 764 vme->end - (vme->start != vme->end ? 1 : 0), (unsigned long)sz, 765 (int)sizeof(void *) * 2, (unsigned long)vme->offset, 766 (vme->protection & VM_PROT_READ) ? 'r' : '-', 767 (vme->protection & VM_PROT_WRITE) ? 'w' : '-', 768 (vme->protection & VM_PROT_EXECUTE) ? 'x' : '-', 769 (vme->etype & UVM_ET_COPYONWRITE) ? 'p' : 's', 770 (vme->etype & UVM_ET_NEEDSCOPY) ? '+' : '-', 771 (vme->max_protection & VM_PROT_READ) ? 'r' : '-', 772 (vme->max_protection & VM_PROT_WRITE) ? 'w' : '-', 773 (vme->max_protection & VM_PROT_EXECUTE) ? 'x' : '-', 774 vme->inheritance, vme->wired_count, vme->advice, 775 major(dev), minor(dev), (unsigned long long)inode, name); 776 if (A(vp)) 777 printf(" [%p]", P(vp)); 778 printf("\n"); 779 } 780 781 if (print_amap && vme->aref.ar_amap) { 782 printf(" amap - ref: %d fl: 0x%x maxsl: %d nsl: %d nuse: %d\n", 783 D(amap, vm_amap)->am_ref, 784 D(amap, vm_amap)->am_flags, 785 D(amap, vm_amap)->am_maxslot, 786 D(amap, vm_amap)->am_nslot, 787 D(amap, vm_amap)->am_nused); 788 if (sum) { 789 sum->s_am_nslots += D(amap, vm_amap)->am_nslot; 790 sum->s_am_maxslots += D(amap, vm_amap)->am_maxslot; 791 sum->s_am_nusedslots += D(amap, vm_amap)->am_nused; 792 } 793 } 794 795 /* no access allowed, don't count space */ 796 if ((vme->protection & rwx) == 0) 797 sz = 0; 798 799 return (sz); 800 } 801 802 char * 803 findname(kvm_t *kd, struct kbit *vmspace, 804 struct vm_map_entry *vme, struct kbit *vp, 805 struct kbit *vfs, struct kbit *uvm_obj) 806 { 807 static char buf[1024], *name; 808 size_t l; 809 810 if (UVM_ET_ISOBJ(vme)) { 811 if (A(vfs)) { 812 l = strlen(D(vfs, mount)->mnt_stat.f_mntonname); 813 switch (search_cache(kd, vp, &name, buf, sizeof(buf))) { 814 case 0: /* found something */ 815 if (name - (1 + 11 + l) < buf) 816 break; 817 name--; 818 *name = '/'; 819 /*FALLTHROUGH*/ 820 case 2: /* found nothing */ 821 name -= 11; 822 memcpy(name, " -unknown- ", (size_t)11); 823 name -= l; 824 memcpy(name, 825 D(vfs, mount)->mnt_stat.f_mntonname, l); 826 break; 827 case 1: /* all is well */ 828 if (name - (1 + l) < buf) 829 break; 830 name--; 831 *name = '/'; 832 if (l != 1) { 833 name -= l; 834 memcpy(name, 835 D(vfs, mount)->mnt_stat.f_mntonname, l); 836 } 837 break; 838 } 839 } else if (UVM_OBJ_IS_DEVICE(D(uvm_obj, uvm_object))) { 840 struct kbit kdev; 841 dev_t dev; 842 843 P(&kdev) = P(uvm_obj); 844 S(&kdev) = sizeof(struct uvm_device); 845 KDEREF(kd, &kdev); 846 dev = D(&kdev, uvm_device)->u_device; 847 name = devname(dev, S_IFCHR); 848 if (name != NULL) 849 snprintf(buf, sizeof(buf), "/dev/%s", name); 850 else 851 snprintf(buf, sizeof(buf), " [ device %d,%d ]", 852 major(dev), minor(dev)); 853 name = buf; 854 } else if (UVM_OBJ_IS_AOBJ(D(uvm_obj, uvm_object))) 855 name = " [ uvm_aobj ]"; 856 else if (UVM_OBJ_IS_VNODE(D(uvm_obj, uvm_object))) 857 name = " [ ?VNODE? ]"; 858 else { 859 snprintf(buf, sizeof(buf), " [ unknown (%p) ]", 860 D(uvm_obj, uvm_object)->pgops); 861 name = buf; 862 } 863 } else if (D(vmspace, vmspace)->vm_maxsaddr <= (caddr_t)vme->start && 864 (D(vmspace, vmspace)->vm_maxsaddr + (size_t)maxssiz) >= 865 (caddr_t)vme->end) { 866 name = " [ stack ]"; 867 } else if (D(vmspace, vmspace)->vm_daddr <= (caddr_t)vme->start && 868 D(vmspace, vmspace)->vm_daddr + BRKSIZ >= (caddr_t)vme->end) { 869 name = " [ heap ]"; 870 } else if (UVM_ET_ISHOLE(vme)) 871 name = " [ hole ]"; 872 else 873 name = " [ anon ]"; 874 875 return (name); 876 } 877 878 int 879 search_cache(kvm_t *kd, struct kbit *vp, char **name, char *buf, size_t blen) 880 { 881 struct cache_entry *ce; 882 struct kbit svp; 883 char *o, *e; 884 u_long cid; 885 886 P(&svp) = P(vp); 887 S(&svp) = sizeof(struct vnode); 888 cid = D(vp, vnode)->v_id; 889 890 e = &buf[blen - 1]; 891 o = e; 892 do { 893 LIST_FOREACH(ce, &lcache, ce_next) 894 if (ce->ce_vp == P(&svp) && ce->ce_cid == cid) 895 break; 896 if (ce && ce->ce_vp == P(&svp) && ce->ce_cid == cid) { 897 if (o != e) 898 *(--o) = '/'; 899 if (o - ce->ce_nlen <= buf) 900 break; 901 o -= ce->ce_nlen; 902 memcpy(o, ce->ce_name, ce->ce_nlen); 903 P(&svp) = ce->ce_pvp; 904 cid = ce->ce_pcid; 905 } else 906 break; 907 } while (1/*CONSTCOND*/); 908 *e = '\0'; 909 *name = o; 910 911 if (e == o) 912 return (2); 913 914 KDEREF(kd, &svp); 915 return (D(&svp, vnode)->v_flag & VROOT); 916 } 917 918 static void __dead 919 usage(void) 920 { 921 extern char *__progname; 922 fprintf(stderr, "usage: %s [-AadlmPsv] [-D number] " 923 "[-M core] [-N system] [-p pid] [pid ...]\n", 924 __progname); 925 exit(1); 926 } 927 928 static pid_t 929 strtopid(const char *str) 930 { 931 pid_t pid; 932 933 errno = 0; 934 pid = (pid_t)strtonum(str, 0, INT_MAX, NULL); 935 if (errno != 0) 936 usage(); 937 return (pid); 938 } 939