1 /* $OpenBSD: kvm_file2.c,v 1.36 2014/07/04 05:58:31 guenther Exp $ */ 2 3 /* 4 * Copyright (c) 2009 Todd C. Miller <Todd.Miller@courtesan.com> 5 * 6 * Permission to use, copy, modify, and distribute this software for any 7 * purpose with or without fee is hereby granted, provided that the above 8 * copyright notice and this permission notice appear in all copies. 9 * 10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 17 */ 18 19 /*- 20 * Copyright (c) 1989, 1992, 1993 21 * The Regents of the University of California. All rights reserved. 22 * 23 * Redistribution and use in source and binary forms, with or without 24 * modification, are permitted provided that the following conditions 25 * are met: 26 * 1. Redistributions of source code must retain the above copyright 27 * notice, this list of conditions and the following disclaimer. 28 * 2. Redistributions in binary form must reproduce the above copyright 29 * notice, this list of conditions and the following disclaimer in the 30 * documentation and/or other materials provided with the distribution. 31 * 3. Neither the name of the University nor the names of its contributors 32 * may be used to endorse or promote products derived from this software 33 * without specific prior written permission. 34 * 35 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 36 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 37 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 38 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 39 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 40 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 41 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 42 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 43 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 44 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 45 * SUCH DAMAGE. 46 */ 47 48 /* 49 * Extended file list interface for kvm. pstat, fstat and netstat are 50 * users of this code, so we've factored it out into a separate module. 51 * Thus, we keep this grunge out of the other kvm applications (i.e., 52 * most other applications are interested only in open/close/read/nlist). 53 */ 54 55 #define __need_process 56 57 #include <sys/param.h> 58 #include <sys/uio.h> 59 #include <sys/ucred.h> 60 #include <sys/proc.h> 61 #define _KERNEL 62 #include <sys/file.h> 63 #include <sys/mount.h> 64 #include <dev/systrace.h> 65 #undef _KERNEL 66 #include <sys/vnode.h> 67 #include <sys/socket.h> 68 #include <sys/socketvar.h> 69 #include <sys/domain.h> 70 #include <sys/protosw.h> 71 #include <sys/event.h> 72 #include <sys/eventvar.h> 73 #include <sys/un.h> 74 #include <sys/unpcb.h> 75 #include <sys/filedesc.h> 76 #include <sys/mbuf.h> 77 #include <sys/pipe.h> 78 #include <sys/stat.h> 79 #include <sys/sysctl.h> 80 #include <sys/specdev.h> 81 82 #define _KERNEL 83 #include <ufs/ufs/quota.h> 84 #include <ufs/ufs/inode.h> 85 #undef _KERNEL 86 87 #include <nfs/nfsproto.h> 88 #include <nfs/rpcv2.h> 89 #include <nfs/nfs.h> 90 #include <nfs/nfsnode.h> 91 92 #include <msdosfs/bpb.h> 93 #include <msdosfs/denode.h> 94 #include <msdosfs/msdosfsmount.h> 95 96 #include <net/route.h> 97 #include <netinet/in.h> 98 #include <netinet/in_systm.h> 99 #include <netinet/ip.h> 100 #include <netinet/in_pcb.h> 101 102 #ifdef INET6 103 #include <netinet/ip6.h> 104 #include <netinet6/ip6_var.h> 105 #endif 106 107 #include <nlist.h> 108 #include <kvm.h> 109 #include <db.h> 110 #include <stddef.h> 111 #include <stdlib.h> 112 #include <stddef.h> 113 #include <string.h> 114 #include <unistd.h> 115 116 #include "kvm_private.h" 117 #include "kvm_file.h" 118 119 static struct kinfo_file *kvm_deadfile_byfile(kvm_t *, int, int, 120 size_t, int *); 121 static struct kinfo_file *kvm_deadfile_byid(kvm_t *, int, int, 122 size_t, int *); 123 static int fill_file(kvm_t *, struct kinfo_file *, struct file *, u_long, 124 struct vnode *, struct process *, int, pid_t); 125 static int filestat(kvm_t *, struct kinfo_file *, struct vnode *); 126 127 LIST_HEAD(processlist, process); 128 129 struct kinfo_file * 130 kvm_getfiles(kvm_t *kd, int op, int arg, size_t esize, int *cnt) 131 { 132 int mib[6], rv; 133 size_t size; 134 135 if (kd->filebase != NULL) { 136 free(kd->filebase); 137 /* 138 * Clear this pointer in case this call fails. Otherwise, 139 * kvm_close() will free it again. 140 */ 141 kd->filebase = 0; 142 } 143 144 if (ISALIVE(kd)) { 145 mib[0] = CTL_KERN; 146 mib[1] = KERN_FILE; 147 mib[2] = op; 148 mib[3] = arg; 149 mib[4] = esize; 150 mib[5] = 0; 151 152 /* find size and alloc buffer */ 153 rv = sysctl(mib, 6, NULL, &size, NULL, 0); 154 if (rv == -1) { 155 if (kd->vmfd != -1) 156 goto deadway; 157 _kvm_syserr(kd, kd->program, "kvm_getfiles"); 158 return (NULL); 159 } 160 kd->filebase = _kvm_malloc(kd, size); 161 if (kd->filebase == NULL) 162 return (NULL); 163 164 /* get actual data */ 165 mib[5] = size / esize; 166 rv = sysctl(mib, 6, kd->filebase, &size, NULL, 0); 167 if (rv == -1) { 168 _kvm_syserr(kd, kd->program, "kvm_getfiles"); 169 return (NULL); 170 } 171 *cnt = size / esize; 172 return (kd->filebase); 173 } else { 174 if (esize > sizeof(struct kinfo_file)) { 175 _kvm_syserr(kd, kd->program, 176 "kvm_getfiles: unknown fields requested: libkvm out of date?"); 177 return (NULL); 178 } 179 deadway: 180 switch (op) { 181 case KERN_FILE_BYFILE: 182 if (arg != 0) { 183 _kvm_err(kd, kd->program, 184 "%d: invalid argument", arg); 185 return (NULL); 186 } 187 return (kvm_deadfile_byfile(kd, op, arg, esize, cnt)); 188 break; 189 case KERN_FILE_BYPID: 190 case KERN_FILE_BYUID: 191 return (kvm_deadfile_byid(kd, op, arg, esize, cnt)); 192 break; 193 default: 194 return (NULL); 195 } 196 } 197 } 198 199 static struct kinfo_file * 200 kvm_deadfile_byfile(kvm_t *kd, int op, int arg, size_t esize, int *cnt) 201 { 202 struct nlist nl[3], *p; 203 size_t buflen; 204 int n = 0; 205 char *where; 206 struct kinfo_file kf; 207 struct file *fp, file; 208 struct filelist filehead; 209 int nfiles; 210 211 nl[0].n_name = "_filehead"; 212 nl[1].n_name = "_nfiles"; 213 nl[2].n_name = 0; 214 215 if (kvm_nlist(kd, nl) != 0) { 216 for (p = nl; p->n_type != 0; ++p) 217 ; 218 _kvm_err(kd, kd->program, 219 "%s: no such symbol", p->n_name); 220 return (NULL); 221 } 222 if (KREAD(kd, nl[0].n_value, &filehead)) { 223 _kvm_err(kd, kd->program, "can't read filehead"); 224 return (NULL); 225 } 226 if (KREAD(kd, nl[1].n_value, &nfiles)) { 227 _kvm_err(kd, kd->program, "can't read nfiles"); 228 return (NULL); 229 } 230 buflen = nfiles * esize; 231 where = _kvm_malloc(kd, buflen); 232 kd->filebase = (void *)where; 233 if (kd->filebase == NULL) 234 return (NULL); 235 236 for (fp = LIST_FIRST(&filehead); 237 fp != NULL && esize <= buflen; 238 fp = LIST_NEXT(&file, f_list)) { 239 if (KREAD(kd, (u_long)fp, &file)) { 240 _kvm_err(kd, kd->program, "can't read kfp"); 241 return (NULL); 242 } 243 if (fill_file(kd, &kf, &file, (u_long)fp, NULL, NULL, 0, 0) 244 == -1) 245 return (NULL); 246 memcpy(where, &kf, esize); 247 where += esize; 248 buflen -= esize; 249 n++; 250 } 251 if (n != nfiles) { 252 _kvm_err(kd, kd->program, "inconsistent nfiles"); 253 return (NULL); 254 } 255 *cnt = n; 256 return (kd->filebase); 257 } 258 259 static struct kinfo_file * 260 kvm_deadfile_byid(kvm_t *kd, int op, int arg, size_t esize, int *cnt) 261 { 262 size_t buflen; 263 struct nlist nl[4], *np; 264 int n = 0; 265 char *where; 266 struct kinfo_file kf; 267 struct file *fp, file; 268 struct filelist filehead; 269 struct filedesc0 filed0; 270 #define filed filed0.fd_fd 271 struct processlist allprocess; 272 struct proc proc; 273 struct process *pr, process; 274 struct ucred ucred; 275 char *filebuf = NULL; 276 int i, nfiles; 277 278 nl[0].n_name = "_filehead"; 279 nl[1].n_name = "_nfiles"; 280 nl[2].n_name = "_allprocess"; 281 nl[3].n_name = 0; 282 283 if (kvm_nlist(kd, nl) != 0) { 284 for (np = nl; np->n_type != 0; ++np) 285 ; 286 _kvm_err(kd, kd->program, 287 "%s: no such symbol", np->n_name); 288 return (NULL); 289 } 290 if (KREAD(kd, nl[0].n_value, &filehead)) { 291 _kvm_err(kd, kd->program, "can't read filehead"); 292 return (NULL); 293 } 294 if (KREAD(kd, nl[1].n_value, &nfiles)) { 295 _kvm_err(kd, kd->program, "can't read nfiles"); 296 return (NULL); 297 } 298 if (KREAD(kd, nl[2].n_value, &allprocess)) { 299 _kvm_err(kd, kd->program, "can't read allprocess"); 300 return (NULL); 301 } 302 /* this may be more room than we need but counting is expensive */ 303 buflen = (nfiles + 10) * esize; 304 where = _kvm_malloc(kd, buflen); 305 kd->filebase = (void *)where; 306 if (kd->filebase == NULL) 307 return (NULL); 308 309 for (pr = LIST_FIRST(&allprocess); 310 pr != NULL; 311 pr = LIST_NEXT(&process, ps_list)) { 312 if (KREAD(kd, (u_long)pr, &process)) { 313 _kvm_err(kd, kd->program, "can't read process at %lx", 314 (u_long)pr); 315 goto cleanup; 316 } 317 318 /* skip system, exiting, embryonic and undead processes */ 319 if (process.ps_flags & (PS_SYSTEM | PS_EMBRYO | PS_EXITING)) 320 continue; 321 322 if (process.ps_mainproc == NULL) 323 continue; 324 if (KREAD(kd, (u_long)process.ps_mainproc, &proc)) { 325 _kvm_err(kd, kd->program, "can't read proc at %lx", 326 (u_long)process.ps_mainproc); 327 goto cleanup; 328 } 329 330 if (op == KERN_FILE_BYPID && arg > 0 && 331 proc.p_pid != (pid_t)arg) { 332 /* not the pid we are looking for */ 333 continue; 334 } 335 336 if (KREAD(kd, (u_long)process.ps_ucred, &ucred)) { 337 _kvm_err(kd, kd->program, "can't read ucred at %lx", 338 (u_long)process.ps_ucred); 339 goto cleanup; 340 } 341 process.ps_mainproc = &proc; 342 proc.p_p = &process; 343 process.ps_ucred = &ucred; 344 345 if (op == KERN_FILE_BYUID && arg >= 0 && 346 process.ps_ucred->cr_uid != (uid_t)arg) { 347 /* not the uid we are looking for */ 348 continue; 349 } 350 351 if (KREAD(kd, (u_long)process.ps_fd, &filed0)) { 352 _kvm_err(kd, kd->program, "can't read filedesc at %lx", 353 (u_long)process.ps_fd); 354 goto cleanup; 355 } 356 if ((char *)process.ps_fd + offsetof(struct filedesc0,fd_dfiles) 357 == (char *)filed.fd_ofiles) { 358 filed.fd_ofiles = filed0.fd_dfiles; 359 filed.fd_ofileflags = filed0.fd_dfileflags; 360 } else { 361 size_t fsize = filed.fd_nfiles * OFILESIZE; 362 char *tmp = realloc(filebuf, fsize); 363 364 if (tmp == NULL) { 365 _kvm_syserr(kd, kd->program, "realloc ofiles"); 366 goto cleanup; 367 } 368 filebuf = tmp; 369 if (kvm_read(kd, (u_long)filed.fd_ofiles, filebuf, 370 fsize) != fsize) { 371 _kvm_err(kd, kd->program, 372 "can't read fd_ofiles"); 373 goto cleanup; 374 } 375 filed.fd_ofiles = (void *)filebuf; 376 filed.fd_ofileflags = filebuf + 377 (filed.fd_nfiles * sizeof(struct file *)); 378 } 379 process.ps_fd = &filed; 380 381 if (process.ps_textvp) { 382 if (buflen < esize) 383 goto done; 384 if (fill_file(kd, &kf, NULL, 0, process.ps_textvp, 385 &process, KERN_FILE_TEXT, proc.p_pid) == -1) 386 goto cleanup; 387 memcpy(where, &kf, esize); 388 where += esize; 389 buflen -= esize; 390 n++; 391 } 392 if (filed.fd_cdir) { 393 if (buflen < esize) 394 goto done; 395 if (fill_file(kd, &kf, NULL, 0, filed.fd_cdir, 396 &process, KERN_FILE_CDIR, proc.p_pid) == -1) 397 goto cleanup; 398 memcpy(where, &kf, esize); 399 where += esize; 400 buflen -= esize; 401 n++; 402 } 403 if (filed.fd_rdir) { 404 if (buflen < esize) 405 goto done; 406 if (fill_file(kd, &kf, NULL, 0, filed.fd_rdir, 407 &process, KERN_FILE_RDIR, proc.p_pid) == -1) 408 goto cleanup; 409 memcpy(where, &kf, esize); 410 where += esize; 411 buflen -= esize; 412 n++; 413 } 414 if (process.ps_tracevp) { 415 if (buflen < esize) 416 goto done; 417 if (fill_file(kd, &kf, NULL, 0, process.ps_tracevp, 418 &process, KERN_FILE_TRACE, proc.p_pid) == -1) 419 goto cleanup; 420 memcpy(where, &kf, esize); 421 where += esize; 422 buflen -= esize; 423 n++; 424 } 425 426 if (filed.fd_nfiles < 0 || 427 filed.fd_lastfile >= filed.fd_nfiles || 428 filed.fd_freefile > filed.fd_lastfile + 1) { 429 _kvm_err(kd, kd->program, 430 "filedesc corrupted at %lx for pid %d", 431 (u_long)process.ps_fd, proc.p_pid); 432 goto cleanup; 433 } 434 435 for (i = 0; i < filed.fd_nfiles; i++) { 436 if (buflen < esize) 437 goto done; 438 if ((fp = filed.fd_ofiles[i]) == NULL) 439 continue; 440 if (KREAD(kd, (u_long)fp, &file)) { 441 _kvm_err(kd, kd->program, "can't read file"); 442 goto cleanup; 443 } 444 if (fill_file(kd, &kf, &file, (u_long)fp, NULL, 445 &process, i, proc.p_pid) == -1) 446 goto cleanup; 447 memcpy(where, &kf, esize); 448 where += esize; 449 buflen -= esize; 450 n++; 451 } 452 } 453 done: 454 *cnt = n; 455 free(filebuf); 456 return (kd->filebase); 457 cleanup: 458 free(filebuf); 459 return (NULL); 460 } 461 462 static int 463 fill_file(kvm_t *kd, struct kinfo_file *kf, struct file *fp, u_long fpaddr, 464 struct vnode *vp, struct process *pr, int fd, pid_t pid) 465 { 466 struct ucred f_cred; 467 468 memset(kf, 0, sizeof(*kf)); 469 470 kf->fd_fd = fd; /* might not really be an fd */ 471 472 if (fp != NULL) { 473 /* Fill in f_cred */ 474 if (KREAD(kd, (u_long)fp->f_cred, &f_cred)) { 475 _kvm_err(kd, kd->program, "can't read f_cred"); 476 return (-1); 477 } 478 479 kf->f_fileaddr = PTRTOINT64(fpaddr); 480 kf->f_flag = fp->f_flag; 481 kf->f_iflags = fp->f_iflags; 482 kf->f_type = fp->f_type; 483 kf->f_count = fp->f_count; 484 kf->f_msgcount = fp->f_msgcount; 485 kf->f_ucred = PTRTOINT64(fp->f_cred); 486 kf->f_uid = f_cred.cr_uid; 487 kf->f_gid = f_cred.cr_gid; 488 kf->f_ops = PTRTOINT64(fp->f_ops); 489 kf->f_offset = fp->f_offset; 490 kf->f_data = PTRTOINT64(fp->f_data); 491 kf->f_usecount = 0; 492 493 kf->f_rxfer = fp->f_rxfer; 494 kf->f_rwfer = fp->f_wxfer; 495 kf->f_seek = fp->f_seek; 496 kf->f_rbytes = fp->f_rbytes; 497 kf->f_wbytes = fp->f_wbytes; 498 } else if (vp != NULL) { 499 /* fake it */ 500 kf->f_type = DTYPE_VNODE; 501 kf->f_flag = FREAD; 502 if (fd == KERN_FILE_TRACE) 503 kf->f_flag |= FWRITE; 504 kf->f_data = PTRTOINT64(vp); 505 } 506 507 /* information about the object associated with this file */ 508 switch (kf->f_type) { 509 case DTYPE_VNODE: { 510 struct vnode vbuf; 511 512 if (KREAD(kd, (u_long)(fp ? fp->f_data : vp), &vbuf)) { 513 _kvm_err(kd, kd->program, "can't read vnode"); 514 return (-1); 515 } 516 vp = &vbuf; 517 518 kf->v_un = PTRTOINT64(vp->v_un.vu_socket); 519 kf->v_type = vp->v_type; 520 kf->v_tag = vp->v_tag; 521 kf->v_flag = vp->v_flag; 522 kf->v_data = PTRTOINT64(vp->v_data); 523 kf->v_mount = PTRTOINT64(vp->v_mount); 524 525 if (vp->v_mount != NULL) { 526 struct mount mount; 527 528 if (KREAD(kd, (u_long)vp->v_mount, &mount)) { 529 _kvm_err(kd, kd->program, "can't read v_mount"); 530 return (-1); 531 } 532 533 strlcpy(kf->f_mntonname, mount.mnt_stat.f_mntonname, 534 sizeof(kf->f_mntonname)); 535 } 536 537 /* Fill in va_fsid, va_fileid, va_mode, va_size, va_rdev */ 538 filestat(kd, kf, vp); 539 break; 540 } 541 542 case DTYPE_SOCKET: { 543 struct socket sock; 544 struct protosw protosw; 545 struct domain domain; 546 547 if (KREAD(kd, (u_long)fp->f_data, &sock)) { 548 _kvm_err(kd, kd->program, "can't read socket"); 549 return (-1); 550 } 551 552 kf->so_type = sock.so_type; 553 kf->so_state = sock.so_state; 554 kf->so_pcb = PTRTOINT64(sock.so_pcb); 555 if (KREAD(kd, (u_long)sock.so_proto, &protosw)) { 556 _kvm_err(kd, kd->program, "can't read protosw"); 557 return (-1); 558 } 559 kf->so_protocol = protosw.pr_protocol; 560 if (KREAD(kd, (u_long)protosw.pr_domain, &domain)) { 561 _kvm_err(kd, kd->program, "can't read domain"); 562 return (-1); 563 } 564 kf->so_family = domain.dom_family; 565 kf->so_rcv_cc = sock.so_rcv.sb_cc; 566 kf->so_snd_cc = sock.so_snd.sb_cc; 567 if (sock.so_splice) { 568 kf->so_splice = PTRTOINT64(sock.so_splice); 569 kf->so_splicelen = sock.so_splicelen; 570 } else if (sock.so_spliceback) 571 kf->so_splicelen = -1; 572 if (!sock.so_pcb) 573 break; 574 switch (kf->so_family) { 575 case AF_INET: { 576 struct inpcb inpcb; 577 578 if (KREAD(kd, (u_long)sock.so_pcb, &inpcb)) { 579 _kvm_err(kd, kd->program, "can't read inpcb"); 580 return (-1); 581 } 582 kf->inp_ppcb = PTRTOINT64(inpcb.inp_ppcb); 583 kf->inp_lport = inpcb.inp_lport; 584 kf->inp_laddru[0] = inpcb.inp_laddr.s_addr; 585 kf->inp_fport = inpcb.inp_fport; 586 kf->inp_faddru[0] = inpcb.inp_faddr.s_addr; 587 kf->inp_rtableid = inpcb.inp_rtableid; 588 break; 589 } 590 case AF_INET6: { 591 struct inpcb inpcb; 592 #define s6_addr32 __u6_addr.__u6_addr32 593 594 if (KREAD(kd, (u_long)sock.so_pcb, &inpcb)) { 595 _kvm_err(kd, kd->program, "can't read inpcb"); 596 return (-1); 597 } 598 kf->inp_ppcb = PTRTOINT64(inpcb.inp_ppcb); 599 kf->inp_lport = inpcb.inp_lport; 600 kf->inp_laddru[0] = inpcb.inp_laddr6.s6_addr32[0]; 601 kf->inp_laddru[1] = inpcb.inp_laddr6.s6_addr32[1]; 602 kf->inp_laddru[2] = inpcb.inp_laddr6.s6_addr32[2]; 603 kf->inp_laddru[3] = inpcb.inp_laddr6.s6_addr32[3]; 604 kf->inp_fport = inpcb.inp_fport; 605 kf->inp_faddru[0] = inpcb.inp_laddr6.s6_addr32[0]; 606 kf->inp_faddru[1] = inpcb.inp_faddr6.s6_addr32[1]; 607 kf->inp_faddru[2] = inpcb.inp_faddr6.s6_addr32[2]; 608 kf->inp_faddru[3] = inpcb.inp_faddr6.s6_addr32[3]; 609 kf->inp_rtableid = inpcb.inp_rtableid; 610 break; 611 } 612 case AF_UNIX: { 613 struct unpcb unpcb; 614 615 if (KREAD(kd, (u_long)sock.so_pcb, &unpcb)) { 616 _kvm_err(kd, kd->program, "can't read unpcb"); 617 return (-1); 618 } 619 kf->unp_conn = PTRTOINT64(unpcb.unp_conn); 620 kf->unp_refs = PTRTOINT64(unpcb.unp_refs); 621 kf->unp_nextref = PTRTOINT64(unpcb.unp_nextref); 622 kf->v_un = PTRTOINT64(unpcb.unp_vnode); 623 if (unpcb.unp_addr != NULL) { 624 struct mbuf mb; 625 struct sockaddr_un un; 626 627 if (KREAD(kd, (u_long)unpcb.unp_addr, &mb)) { 628 _kvm_err(kd, kd->program, 629 "can't read sockaddr_un mbuf"); 630 return (-1); 631 } 632 if (KREAD(kd, (u_long)mb.m_data, &un)) { 633 _kvm_err(kd, kd->program, 634 "can't read sockaddr_un"); 635 return (-1); 636 } 637 638 kf->unp_addr = PTRTOINT64(unpcb.unp_addr); 639 memcpy(kf->unp_path, un.sun_path, un.sun_len 640 - offsetof(struct sockaddr_un,sun_path)); 641 } 642 643 break; 644 } 645 } 646 break; 647 } 648 649 case DTYPE_PIPE: { 650 struct pipe pipe; 651 652 if (KREAD(kd, (u_long)fp->f_data, &pipe)) { 653 _kvm_err(kd, kd->program, "can't read pipe"); 654 return (-1); 655 } 656 kf->pipe_peer = PTRTOINT64(pipe.pipe_peer); 657 kf->pipe_state = pipe.pipe_state; 658 break; 659 } 660 661 case DTYPE_KQUEUE: { 662 struct kqueue kqi; 663 664 if (KREAD(kd, (u_long)fp->f_data, &kqi)) { 665 _kvm_err(kd, kd->program, "can't read kqi"); 666 return (-1); 667 } 668 kf->kq_count = kqi.kq_count; 669 kf->kq_state = kqi.kq_state; 670 break; 671 } 672 case DTYPE_SYSTRACE: { 673 struct fsystrace f; 674 675 if (KREAD(kd, (u_long)fp->f_data, &f)) { 676 _kvm_err(kd, kd->program, "can't read fsystrace"); 677 return (-1); 678 } 679 kf->str_npolicies = f.npolicies; 680 break; 681 } 682 } 683 684 /* per-process information for KERN_FILE_BY[PU]ID */ 685 if (pr != NULL) { 686 kf->p_pid = pid; 687 kf->p_uid = pr->ps_ucred->cr_uid; 688 kf->p_gid = pr->ps_ucred->cr_gid; 689 kf->p_tid = -1; 690 strlcpy(kf->p_comm, pr->ps_mainproc->p_comm, 691 sizeof(kf->p_comm)); 692 if (pr->ps_fd != NULL) 693 kf->fd_ofileflags = pr->ps_fd->fd_ofileflags[fd]; 694 } 695 696 return (0); 697 } 698 699 mode_t 700 _kvm_getftype(enum vtype v_type) 701 { 702 mode_t ftype = 0; 703 704 switch (v_type) { 705 case VREG: 706 ftype = S_IFREG; 707 break; 708 case VDIR: 709 ftype = S_IFDIR; 710 break; 711 case VBLK: 712 ftype = S_IFBLK; 713 break; 714 case VCHR: 715 ftype = S_IFCHR; 716 break; 717 case VLNK: 718 ftype = S_IFLNK; 719 break; 720 case VSOCK: 721 ftype = S_IFSOCK; 722 break; 723 case VFIFO: 724 ftype = S_IFIFO; 725 break; 726 case VNON: 727 case VBAD: 728 break; 729 } 730 731 return (ftype); 732 } 733 734 static int 735 ufs_filestat(kvm_t *kd, struct kinfo_file *kf, struct vnode *vp) 736 { 737 struct inode inode; 738 struct ufs1_dinode di1; 739 740 if (KREAD(kd, (u_long)VTOI(vp), &inode)) { 741 _kvm_err(kd, kd->program, "can't read inode at %p", VTOI(vp)); 742 return (-1); 743 } 744 745 if (KREAD(kd, (u_long)inode.i_din1, &di1)) { 746 _kvm_err(kd, kd->program, "can't read dinode at %p", 747 inode.i_din1); 748 return (-1); 749 } 750 751 inode.i_din1 = &di1; 752 753 kf->va_fsid = inode.i_dev & 0xffff; 754 kf->va_fileid = (long)inode.i_number; 755 kf->va_mode = inode.i_ffs1_mode; 756 kf->va_size = inode.i_ffs1_size; 757 kf->va_rdev = inode.i_ffs1_rdev; 758 759 return (0); 760 } 761 762 static int 763 ext2fs_filestat(kvm_t *kd, struct kinfo_file *kf, struct vnode *vp) 764 { 765 struct inode inode; 766 struct ext2fs_dinode e2di; 767 768 if (KREAD(kd, (u_long)VTOI(vp), &inode)) { 769 _kvm_err(kd, kd->program, "can't read inode at %p", VTOI(vp)); 770 return (-1); 771 } 772 773 if (KREAD(kd, (u_long)inode.i_e2din, &e2di)) { 774 _kvm_err(kd, kd->program, "can't read dinode at %p", 775 inode.i_e2din); 776 return (-1); 777 } 778 779 inode.i_e2din = &e2di; 780 781 kf->va_fsid = inode.i_dev & 0xffff; 782 kf->va_fileid = (long)inode.i_number; 783 kf->va_mode = inode.i_e2fs_mode; 784 kf->va_size = inode.i_e2fs_size; 785 kf->va_rdev = 0; /* XXX */ 786 787 return (0); 788 } 789 790 static int 791 msdos_filestat(kvm_t *kd, struct kinfo_file *kf, struct vnode *vp) 792 { 793 struct denode de; 794 struct msdosfsmount mp; 795 796 if (KREAD(kd, (u_long)VTODE(vp), &de)) { 797 _kvm_err(kd, kd->program, "can't read denode at %p", VTODE(vp)); 798 return (-1); 799 } 800 if (KREAD(kd, (u_long)de.de_pmp, &mp)) { 801 _kvm_err(kd, kd->program, "can't read mount struct at %p", 802 de.de_pmp); 803 return (-1); 804 } 805 806 kf->va_fsid = de.de_dev & 0xffff; 807 kf->va_fileid = 0; /* XXX see msdosfs_vptofh() for more info */ 808 kf->va_mode = (mp.pm_mask & 0777) | _kvm_getftype(vp->v_type); 809 kf->va_size = de.de_FileSize; 810 kf->va_rdev = 0; /* msdosfs doesn't support device files */ 811 812 return (0); 813 } 814 815 static int 816 nfs_filestat(kvm_t *kd, struct kinfo_file *kf, struct vnode *vp) 817 { 818 struct nfsnode nfsnode; 819 820 if (KREAD(kd, (u_long)VTONFS(vp), &nfsnode)) { 821 _kvm_err(kd, kd->program, "can't read nfsnode at %p", 822 VTONFS(vp)); 823 return (-1); 824 } 825 kf->va_fsid = nfsnode.n_vattr.va_fsid; 826 kf->va_fileid = nfsnode.n_vattr.va_fileid; 827 kf->va_size = nfsnode.n_size; 828 kf->va_rdev = nfsnode.n_vattr.va_rdev; 829 kf->va_mode = (mode_t)nfsnode.n_vattr.va_mode | _kvm_getftype(vp->v_type); 830 831 return (0); 832 } 833 834 static int 835 spec_filestat(kvm_t *kd, struct kinfo_file *kf, struct vnode *vp) 836 { 837 struct specinfo specinfo; 838 struct vnode parent; 839 840 if (KREAD(kd, (u_long)vp->v_specinfo, &specinfo)) { 841 _kvm_err(kd, kd->program, "can't read specinfo at %p", 842 vp->v_specinfo); 843 return (-1); 844 } 845 846 vp->v_specinfo = &specinfo; 847 848 if (KREAD(kd, (u_long)vp->v_specparent, &parent)) { 849 _kvm_err(kd, kd->program, "can't read parent vnode at %p", 850 vp->v_specparent); 851 return (-1); 852 } 853 854 if (ufs_filestat(kd, kf, vp)) 855 return (-1); 856 857 return (0); 858 } 859 860 static int 861 filestat(kvm_t *kd, struct kinfo_file *kf, struct vnode *vp) 862 { 863 int ret = 0; 864 865 if (vp->v_type != VNON && vp->v_type != VBAD) { 866 switch (vp->v_tag) { 867 case VT_UFS: 868 case VT_MFS: 869 ret = ufs_filestat(kd, kf, vp); 870 break; 871 case VT_NFS: 872 ret = nfs_filestat(kd, kf, vp); 873 break; 874 case VT_EXT2FS: 875 ret = ext2fs_filestat(kd, kf, vp); 876 break; 877 case VT_ISOFS: 878 ret = _kvm_stat_cd9660(kd, kf, vp); 879 break; 880 case VT_MSDOSFS: 881 ret = msdos_filestat(kd, kf, vp); 882 break; 883 case VT_UDF: 884 ret = _kvm_stat_udf(kd, kf, vp); 885 break; 886 case VT_NTFS: 887 ret = _kvm_stat_ntfs(kd, kf, vp); 888 break; 889 case VT_NON: 890 if (vp->v_flag & VCLONE) 891 ret = spec_filestat(kd, kf, vp); 892 break; 893 default: 894 ret = -1; 895 break; 896 } 897 } 898 return (ret); 899 } 900