1 /* $OpenBSD: kvm_file2.c,v 1.55 2019/01/25 00:19:25 millert Exp $ */ 2 3 /* 4 * Copyright (c) 2009 Todd C. Miller <millert@openbsd.org> 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 #undef _KERNEL 65 #include <sys/vnode.h> 66 #include <sys/socket.h> 67 #include <sys/socketvar.h> 68 #include <sys/domain.h> 69 #include <sys/protosw.h> 70 #include <sys/event.h> 71 #include <sys/eventvar.h> 72 #include <sys/un.h> 73 #include <sys/unpcb.h> 74 #include <sys/filedesc.h> 75 #include <sys/mbuf.h> 76 #include <sys/pipe.h> 77 #include <sys/stat.h> 78 #include <sys/sysctl.h> 79 #include <sys/specdev.h> 80 81 #define _KERNEL 82 #include <ufs/ufs/quota.h> 83 #include <ufs/ufs/inode.h> 84 #undef _KERNEL 85 86 #include <nfs/nfsproto.h> 87 #include <nfs/rpcv2.h> 88 #include <nfs/nfs.h> 89 #include <nfs/nfsnode.h> 90 91 #include <msdosfs/bpb.h> 92 #include <msdosfs/denode.h> 93 #include <msdosfs/msdosfsmount.h> 94 95 #include <net/route.h> 96 #include <netinet/in.h> 97 #include <netinet/ip.h> 98 #include <netinet/in_pcb.h> 99 #include <netinet/tcp.h> 100 #include <netinet/tcp_timer.h> 101 #include <netinet/tcp_var.h> 102 103 #ifdef INET6 104 #include <netinet/ip6.h> 105 #include <netinet6/ip6_var.h> 106 #endif 107 108 #include <fcntl.h> 109 #include <nlist.h> 110 #include <kvm.h> 111 #include <db.h> 112 #include <stddef.h> 113 #include <stdlib.h> 114 #include <string.h> 115 #include <unistd.h> 116 #include <limits.h> 117 #include <errno.h> 118 119 #include "kvm_private.h" 120 #include "kvm_file.h" 121 122 static struct kinfo_file *kvm_deadfile_byfile(kvm_t *, int, int, 123 size_t, int *); 124 static struct kinfo_file *kvm_deadfile_byid(kvm_t *, int, int, 125 size_t, int *); 126 static int fill_file(kvm_t *, struct kinfo_file *, struct file *, u_long, 127 struct vnode *, struct process *, int, pid_t); 128 static int filestat(kvm_t *, struct kinfo_file *, struct vnode *); 129 130 LIST_HEAD(processlist, process); 131 132 struct kinfo_file * 133 kvm_getfiles(kvm_t *kd, int op, int arg, size_t esize, int *cnt) 134 { 135 int mib[6], rv; 136 void *filebase; 137 size_t size; 138 139 if (ISALIVE(kd)) { 140 mib[0] = CTL_KERN; 141 mib[1] = KERN_FILE; 142 mib[2] = op; 143 mib[3] = arg; 144 mib[4] = esize; 145 146 do { 147 mib[5] = 0; 148 149 /* find size and alloc buffer */ 150 rv = sysctl(mib, 6, NULL, &size, NULL, 0); 151 if (rv == -1) { 152 if (errno != ESRCH && kd->vmfd != -1) 153 goto deadway; 154 _kvm_syserr(kd, kd->program, "kvm_getfiles"); 155 return (NULL); 156 } 157 158 size += size / 8; /* add ~10% */ 159 160 filebase = _kvm_realloc(kd, kd->filebase, size); 161 if (filebase == NULL) 162 return (NULL); 163 164 kd->filebase = filebase; 165 166 /* get actual data */ 167 mib[5] = size / esize; 168 rv = sysctl(mib, 6, kd->filebase, &size, NULL, 0); 169 if (rv == -1 && errno != ENOMEM) { 170 _kvm_syserr(kd, kd->program, 171 "kvm_getfiles"); 172 return (NULL); 173 } 174 } while (rv == -1); 175 176 *cnt = size / esize; 177 return (kd->filebase); 178 } else { 179 if (esize > sizeof(struct kinfo_file)) { 180 _kvm_syserr(kd, kd->program, 181 "kvm_getfiles: unknown fields requested: libkvm out of date?"); 182 return (NULL); 183 } 184 deadway: 185 switch (op) { 186 case KERN_FILE_BYFILE: 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 = "_numfiles"; 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 where = _kvm_reallocarray(kd, kd->filebase, nfiles, esize); 231 if (where == NULL) 232 return (NULL); 233 234 kd->filebase = (void *)where; 235 buflen = nfiles * esize; 236 237 for (fp = LIST_FIRST(&filehead); 238 fp != NULL && esize <= buflen; 239 fp = LIST_NEXT(&file, f_list)) { 240 if (KREAD(kd, (u_long)fp, &file)) { 241 _kvm_err(kd, kd->program, "can't read kfp"); 242 return (NULL); 243 } 244 if (file.f_count == 0) 245 continue; 246 if (arg != 0 && file.f_type != arg) 247 continue; 248 if (fill_file(kd, &kf, &file, (u_long)fp, NULL, NULL, 0, 0) 249 == -1) 250 return (NULL); 251 memcpy(where, &kf, esize); 252 where += esize; 253 buflen -= esize; 254 n++; 255 } 256 if (n != nfiles) { 257 _kvm_err(kd, kd->program, "inconsistent nfiles"); 258 return (NULL); 259 } 260 *cnt = n; 261 return (kd->filebase); 262 } 263 264 static struct kinfo_file * 265 kvm_deadfile_byid(kvm_t *kd, int op, int arg, size_t esize, int *cnt) 266 { 267 size_t buflen; 268 struct nlist nl[4], *np; 269 int n = 0, matched = 0; 270 char *where; 271 struct kinfo_file kf; 272 struct file *fp, file; 273 struct filelist filehead; 274 struct filedesc0 filed0; 275 #define filed filed0.fd_fd 276 struct processlist allprocess; 277 struct process *pr, process; 278 struct ucred ucred; 279 char *filebuf = NULL; 280 int i, nfiles; 281 282 nl[0].n_name = "_filehead"; 283 nl[1].n_name = "_numfiles"; 284 nl[2].n_name = "_allprocess"; 285 nl[3].n_name = 0; 286 287 if (kvm_nlist(kd, nl) != 0) { 288 for (np = nl; np->n_type != 0; ++np) 289 ; 290 _kvm_err(kd, kd->program, 291 "%s: no such symbol", np->n_name); 292 return (NULL); 293 } 294 if (KREAD(kd, nl[0].n_value, &filehead)) { 295 _kvm_err(kd, kd->program, "can't read filehead"); 296 return (NULL); 297 } 298 if (KREAD(kd, nl[1].n_value, &nfiles)) { 299 _kvm_err(kd, kd->program, "can't read nfiles"); 300 return (NULL); 301 } 302 if (KREAD(kd, nl[2].n_value, &allprocess)) { 303 _kvm_err(kd, kd->program, "can't read allprocess"); 304 return (NULL); 305 } 306 /* this may be more room than we need but counting is expensive */ 307 where = _kvm_reallocarray(kd, kd->filebase, nfiles + 10, esize); 308 if (where == NULL) 309 return (NULL); 310 311 kd->filebase = (void *)where; 312 buflen = (nfiles + 10) * esize; 313 314 if (op != KERN_FILE_BYPID || arg <= 0) 315 matched = 1; 316 317 for (pr = LIST_FIRST(&allprocess); 318 pr != NULL; 319 pr = LIST_NEXT(&process, ps_list)) { 320 if (KREAD(kd, (u_long)pr, &process)) { 321 _kvm_err(kd, kd->program, "can't read process at %lx", 322 (u_long)pr); 323 goto cleanup; 324 } 325 326 /* skip system, exiting, embryonic and undead processes */ 327 if (process.ps_flags & (PS_SYSTEM | PS_EMBRYO | PS_EXITING)) 328 continue; 329 330 if (op == KERN_FILE_BYPID) { 331 /* check if this is the pid we are looking for */ 332 if (arg > 0 && process.ps_pid != (pid_t)arg) 333 continue; 334 matched = 1; 335 } 336 337 if (KREAD(kd, (u_long)process.ps_ucred, &ucred)) { 338 _kvm_err(kd, kd->program, "can't read ucred at %lx", 339 (u_long)process.ps_ucred); 340 goto cleanup; 341 } 342 process.ps_ucred = &ucred; 343 344 if (op == KERN_FILE_BYUID && arg >= 0 && 345 process.ps_ucred->cr_uid != (uid_t)arg) { 346 /* not the uid we are looking for */ 347 continue; 348 } 349 350 if (KREAD(kd, (u_long)process.ps_fd, &filed0)) { 351 _kvm_err(kd, kd->program, "can't read filedesc at %lx", 352 (u_long)process.ps_fd); 353 goto cleanup; 354 } 355 if ((char *)process.ps_fd + offsetof(struct filedesc0,fd_dfiles) 356 == (char *)filed.fd_ofiles) { 357 filed.fd_ofiles = filed0.fd_dfiles; 358 filed.fd_ofileflags = filed0.fd_dfileflags; 359 } else { 360 size_t fsize; 361 char *tmp = reallocarray(filebuf, 362 filed.fd_nfiles, OFILESIZE); 363 364 fsize = filed.fd_nfiles * OFILESIZE; 365 if (tmp == NULL) { 366 _kvm_syserr(kd, kd->program, "realloc ofiles"); 367 goto cleanup; 368 } 369 filebuf = tmp; 370 if (kvm_read(kd, (u_long)filed.fd_ofiles, filebuf, 371 fsize) != fsize) { 372 _kvm_err(kd, kd->program, 373 "can't read fd_ofiles"); 374 goto cleanup; 375 } 376 filed.fd_ofiles = (void *)filebuf; 377 filed.fd_ofileflags = filebuf + 378 (filed.fd_nfiles * sizeof(struct file *)); 379 } 380 process.ps_fd = &filed; 381 382 if (process.ps_textvp) { 383 if (buflen < esize) 384 goto done; 385 if (fill_file(kd, &kf, NULL, 0, process.ps_textvp, 386 &process, KERN_FILE_TEXT, process.ps_pid) == -1) 387 goto cleanup; 388 memcpy(where, &kf, esize); 389 where += esize; 390 buflen -= esize; 391 n++; 392 } 393 if (filed.fd_cdir) { 394 if (buflen < esize) 395 goto done; 396 if (fill_file(kd, &kf, NULL, 0, filed.fd_cdir, 397 &process, KERN_FILE_CDIR, process.ps_pid) == -1) 398 goto cleanup; 399 memcpy(where, &kf, esize); 400 where += esize; 401 buflen -= esize; 402 n++; 403 } 404 if (filed.fd_rdir) { 405 if (buflen < esize) 406 goto done; 407 if (fill_file(kd, &kf, NULL, 0, filed.fd_rdir, 408 &process, KERN_FILE_RDIR, process.ps_pid) == -1) 409 goto cleanup; 410 memcpy(where, &kf, esize); 411 where += esize; 412 buflen -= esize; 413 n++; 414 } 415 if (process.ps_tracevp) { 416 if (buflen < esize) 417 goto done; 418 if (fill_file(kd, &kf, NULL, 0, process.ps_tracevp, 419 &process, KERN_FILE_TRACE, process.ps_pid) == -1) 420 goto cleanup; 421 memcpy(where, &kf, esize); 422 where += esize; 423 buflen -= esize; 424 n++; 425 } 426 427 if (filed.fd_nfiles < 0 || 428 filed.fd_lastfile >= filed.fd_nfiles || 429 filed.fd_freefile > filed.fd_lastfile + 1) { 430 _kvm_err(kd, kd->program, 431 "filedesc corrupted at %lx for pid %d", 432 (u_long)process.ps_fd, process.ps_pid); 433 goto cleanup; 434 } 435 436 for (i = 0; i < filed.fd_nfiles; i++) { 437 if (buflen < esize) 438 goto done; 439 if ((fp = filed.fd_ofiles[i]) == NULL) 440 continue; 441 if (KREAD(kd, (u_long)fp, &file)) { 442 _kvm_err(kd, kd->program, "can't read file"); 443 goto cleanup; 444 } 445 if (fill_file(kd, &kf, &file, (u_long)fp, NULL, 446 &process, i, process.ps_pid) == -1) 447 goto cleanup; 448 memcpy(where, &kf, esize); 449 where += esize; 450 buflen -= esize; 451 n++; 452 } 453 } 454 if (!matched) { 455 errno = ESRCH; 456 goto cleanup; 457 } 458 done: 459 *cnt = n; 460 free(filebuf); 461 return (kd->filebase); 462 cleanup: 463 free(filebuf); 464 return (NULL); 465 } 466 467 static int 468 fill_file(kvm_t *kd, struct kinfo_file *kf, struct file *fp, u_long fpaddr, 469 struct vnode *vp, struct process *pr, int fd, pid_t pid) 470 { 471 struct ucred f_cred; 472 473 memset(kf, 0, sizeof(*kf)); 474 475 kf->fd_fd = fd; /* might not really be an fd */ 476 477 if (fp != NULL) { 478 /* Fill in f_cred */ 479 if (KREAD(kd, (u_long)fp->f_cred, &f_cred)) { 480 _kvm_err(kd, kd->program, "can't read f_cred"); 481 return (-1); 482 } 483 484 kf->f_fileaddr = PTRTOINT64(fpaddr); 485 kf->f_flag = fp->f_flag; 486 kf->f_iflags = fp->f_iflags; 487 kf->f_type = fp->f_type; 488 kf->f_count = fp->f_count; 489 kf->f_ucred = PTRTOINT64(fp->f_cred); 490 kf->f_uid = f_cred.cr_uid; 491 kf->f_gid = f_cred.cr_gid; 492 kf->f_ops = PTRTOINT64(fp->f_ops); 493 kf->f_offset = fp->f_offset; 494 kf->f_data = PTRTOINT64(fp->f_data); 495 kf->f_usecount = 0; 496 497 kf->f_rxfer = fp->f_rxfer; 498 kf->f_rwfer = fp->f_wxfer; 499 kf->f_seek = fp->f_seek; 500 kf->f_rbytes = fp->f_rbytes; 501 kf->f_wbytes = fp->f_wbytes; 502 } else if (vp != NULL) { 503 /* fake it */ 504 kf->f_type = DTYPE_VNODE; 505 kf->f_flag = FREAD; 506 if (fd == KERN_FILE_TRACE) 507 kf->f_flag |= FWRITE; 508 kf->f_data = PTRTOINT64(vp); 509 } 510 511 /* information about the object associated with this file */ 512 switch (kf->f_type) { 513 case DTYPE_VNODE: { 514 struct vnode vbuf; 515 516 if (KREAD(kd, (u_long)(fp ? fp->f_data : vp), &vbuf)) { 517 _kvm_err(kd, kd->program, "can't read vnode"); 518 return (-1); 519 } 520 vp = &vbuf; 521 522 kf->v_un = PTRTOINT64(vp->v_un.vu_socket); 523 kf->v_type = vp->v_type; 524 kf->v_tag = vp->v_tag; 525 kf->v_flag = vp->v_flag; 526 kf->v_data = PTRTOINT64(vp->v_data); 527 kf->v_mount = PTRTOINT64(vp->v_mount); 528 529 if (vp->v_mount != NULL) { 530 struct mount mount; 531 532 if (KREAD(kd, (u_long)vp->v_mount, &mount)) { 533 _kvm_err(kd, kd->program, "can't read v_mount"); 534 return (-1); 535 } 536 537 strlcpy(kf->f_mntonname, mount.mnt_stat.f_mntonname, 538 sizeof(kf->f_mntonname)); 539 } 540 541 /* Fill in va_fsid, va_fileid, va_mode, va_size, va_rdev */ 542 filestat(kd, kf, vp); 543 break; 544 } 545 546 case DTYPE_SOCKET: { 547 struct socket sock; 548 struct sosplice ssp; 549 struct protosw protosw; 550 struct domain domain; 551 552 if (KREAD(kd, (u_long)fp->f_data, &sock)) { 553 _kvm_err(kd, kd->program, "can't read socket"); 554 return (-1); 555 } 556 557 kf->so_type = sock.so_type; 558 kf->so_state = sock.so_state; 559 kf->so_pcb = PTRTOINT64(sock.so_pcb); 560 if (KREAD(kd, (u_long)sock.so_proto, &protosw)) { 561 _kvm_err(kd, kd->program, "can't read protosw"); 562 return (-1); 563 } 564 kf->so_protocol = protosw.pr_protocol; 565 if (KREAD(kd, (u_long)protosw.pr_domain, &domain)) { 566 _kvm_err(kd, kd->program, "can't read domain"); 567 return (-1); 568 } 569 kf->so_family = domain.dom_family; 570 kf->so_rcv_cc = sock.so_rcv.sb_cc; 571 kf->so_snd_cc = sock.so_snd.sb_cc; 572 if (sock.so_sp) { 573 if (KREAD(kd, (u_long)sock.so_sp, &ssp)) { 574 _kvm_err(kd, kd->program, "can't read splice"); 575 return (-1); 576 } 577 if (ssp.ssp_socket) { 578 kf->so_splice = PTRTOINT64(ssp.ssp_socket); 579 kf->so_splicelen = ssp.ssp_len; 580 } else if (ssp.ssp_soback) { 581 kf->so_splicelen = -1; 582 } 583 } 584 if (!sock.so_pcb) 585 break; 586 switch (kf->so_family) { 587 case AF_INET: { 588 struct inpcb inpcb; 589 590 if (KREAD(kd, (u_long)sock.so_pcb, &inpcb)) { 591 _kvm_err(kd, kd->program, "can't read inpcb"); 592 return (-1); 593 } 594 kf->inp_ppcb = PTRTOINT64(inpcb.inp_ppcb); 595 kf->inp_lport = inpcb.inp_lport; 596 kf->inp_laddru[0] = inpcb.inp_laddr.s_addr; 597 kf->inp_fport = inpcb.inp_fport; 598 kf->inp_faddru[0] = inpcb.inp_faddr.s_addr; 599 kf->inp_rtableid = inpcb.inp_rtableid; 600 if (sock.so_type == SOCK_RAW) 601 kf->inp_proto = inpcb.inp_ip.ip_p; 602 if (protosw.pr_protocol == IPPROTO_TCP) { 603 struct tcpcb tcpcb; 604 if (KREAD(kd, (u_long)inpcb.inp_ppcb, &tcpcb)) { 605 _kvm_err(kd, kd->program, 606 "can't read tcpcb"); 607 return (-1); 608 } 609 kf->t_rcv_wnd = tcpcb.rcv_wnd; 610 kf->t_snd_wnd = tcpcb.snd_wnd; 611 kf->t_snd_cwnd = tcpcb.snd_cwnd; 612 kf->t_state = tcpcb.t_state; 613 } 614 break; 615 } 616 case AF_INET6: { 617 struct inpcb inpcb; 618 #define s6_addr32 __u6_addr.__u6_addr32 619 620 if (KREAD(kd, (u_long)sock.so_pcb, &inpcb)) { 621 _kvm_err(kd, kd->program, "can't read inpcb"); 622 return (-1); 623 } 624 kf->inp_ppcb = PTRTOINT64(inpcb.inp_ppcb); 625 kf->inp_lport = inpcb.inp_lport; 626 kf->inp_laddru[0] = inpcb.inp_laddr6.s6_addr32[0]; 627 kf->inp_laddru[1] = inpcb.inp_laddr6.s6_addr32[1]; 628 kf->inp_laddru[2] = inpcb.inp_laddr6.s6_addr32[2]; 629 kf->inp_laddru[3] = inpcb.inp_laddr6.s6_addr32[3]; 630 kf->inp_fport = inpcb.inp_fport; 631 kf->inp_faddru[0] = inpcb.inp_laddr6.s6_addr32[0]; 632 kf->inp_faddru[1] = inpcb.inp_faddr6.s6_addr32[1]; 633 kf->inp_faddru[2] = inpcb.inp_faddr6.s6_addr32[2]; 634 kf->inp_faddru[3] = inpcb.inp_faddr6.s6_addr32[3]; 635 kf->inp_rtableid = inpcb.inp_rtableid; 636 if (sock.so_type == SOCK_RAW) 637 kf->inp_proto = inpcb.inp_ipv6.ip6_nxt; 638 if (protosw.pr_protocol == IPPROTO_TCP) { 639 struct tcpcb tcpcb; 640 if (KREAD(kd, (u_long)inpcb.inp_ppcb, &tcpcb)) { 641 _kvm_err(kd, kd->program, 642 "can't read tcpcb"); 643 return (-1); 644 } 645 kf->t_rcv_wnd = tcpcb.rcv_wnd; 646 kf->t_snd_wnd = tcpcb.snd_wnd; 647 kf->t_snd_cwnd = tcpcb.snd_cwnd; 648 kf->t_state = tcpcb.t_state; 649 } 650 break; 651 } 652 case AF_UNIX: { 653 struct unpcb unpcb; 654 655 if (KREAD(kd, (u_long)sock.so_pcb, &unpcb)) { 656 _kvm_err(kd, kd->program, "can't read unpcb"); 657 return (-1); 658 } 659 kf->f_msgcount = unpcb.unp_msgcount; 660 kf->unp_conn = PTRTOINT64(unpcb.unp_conn); 661 kf->unp_refs = PTRTOINT64( 662 SLIST_FIRST(&unpcb.unp_refs)); 663 kf->unp_nextref = PTRTOINT64( 664 SLIST_NEXT(&unpcb, unp_nextref)); 665 kf->v_un = PTRTOINT64(unpcb.unp_vnode); 666 if (unpcb.unp_addr != NULL) { 667 struct mbuf mb; 668 struct sockaddr_un un; 669 670 if (KREAD(kd, (u_long)unpcb.unp_addr, &mb)) { 671 _kvm_err(kd, kd->program, 672 "can't read sockaddr_un mbuf"); 673 return (-1); 674 } 675 if (KREAD(kd, (u_long)mb.m_data, &un)) { 676 _kvm_err(kd, kd->program, 677 "can't read sockaddr_un"); 678 return (-1); 679 } 680 681 kf->unp_addr = PTRTOINT64(unpcb.unp_addr); 682 memcpy(kf->unp_path, un.sun_path, un.sun_len 683 - offsetof(struct sockaddr_un,sun_path)); 684 } 685 686 break; 687 } 688 } 689 break; 690 } 691 692 case DTYPE_PIPE: { 693 struct pipe pipe; 694 695 if (KREAD(kd, (u_long)fp->f_data, &pipe)) { 696 _kvm_err(kd, kd->program, "can't read pipe"); 697 return (-1); 698 } 699 kf->pipe_peer = PTRTOINT64(pipe.pipe_peer); 700 kf->pipe_state = pipe.pipe_state; 701 break; 702 } 703 704 case DTYPE_KQUEUE: { 705 struct kqueue kqi; 706 707 if (KREAD(kd, (u_long)fp->f_data, &kqi)) { 708 _kvm_err(kd, kd->program, "can't read kqi"); 709 return (-1); 710 } 711 kf->kq_count = kqi.kq_count; 712 kf->kq_state = kqi.kq_state; 713 break; 714 } 715 } 716 717 /* per-process information for KERN_FILE_BY[PU]ID */ 718 if (pr != NULL) { 719 kf->p_pid = pid; 720 kf->p_uid = pr->ps_ucred->cr_uid; 721 kf->p_gid = pr->ps_ucred->cr_gid; 722 kf->p_tid = -1; 723 strlcpy(kf->p_comm, pr->ps_comm, sizeof(kf->p_comm)); 724 if (pr->ps_fd != NULL) 725 kf->fd_ofileflags = pr->ps_fd->fd_ofileflags[fd]; 726 } 727 728 return (0); 729 } 730 731 mode_t 732 _kvm_getftype(enum vtype v_type) 733 { 734 mode_t ftype = 0; 735 736 switch (v_type) { 737 case VREG: 738 ftype = S_IFREG; 739 break; 740 case VDIR: 741 ftype = S_IFDIR; 742 break; 743 case VBLK: 744 ftype = S_IFBLK; 745 break; 746 case VCHR: 747 ftype = S_IFCHR; 748 break; 749 case VLNK: 750 ftype = S_IFLNK; 751 break; 752 case VSOCK: 753 ftype = S_IFSOCK; 754 break; 755 case VFIFO: 756 ftype = S_IFIFO; 757 break; 758 case VNON: 759 case VBAD: 760 break; 761 } 762 763 return (ftype); 764 } 765 766 static int 767 ufs_filestat(kvm_t *kd, struct kinfo_file *kf, struct vnode *vp) 768 { 769 struct inode inode; 770 struct ufs1_dinode di1; 771 772 if (KREAD(kd, (u_long)VTOI(vp), &inode)) { 773 _kvm_err(kd, kd->program, "can't read inode at %p", VTOI(vp)); 774 return (-1); 775 } 776 777 if (KREAD(kd, (u_long)inode.i_din1, &di1)) { 778 _kvm_err(kd, kd->program, "can't read dinode at %p", 779 inode.i_din1); 780 return (-1); 781 } 782 783 inode.i_din1 = &di1; 784 785 kf->va_fsid = inode.i_dev & 0xffff; 786 kf->va_fileid = (long)inode.i_number; 787 kf->va_mode = inode.i_ffs1_mode; 788 kf->va_size = inode.i_ffs1_size; 789 kf->va_rdev = inode.i_ffs1_rdev; 790 kf->va_nlink = inode.i_ffs1_nlink; 791 792 return (0); 793 } 794 795 static int 796 ext2fs_filestat(kvm_t *kd, struct kinfo_file *kf, struct vnode *vp) 797 { 798 struct inode inode; 799 struct ext2fs_dinode e2di; 800 801 if (KREAD(kd, (u_long)VTOI(vp), &inode)) { 802 _kvm_err(kd, kd->program, "can't read inode at %p", VTOI(vp)); 803 return (-1); 804 } 805 806 if (KREAD(kd, (u_long)inode.i_e2din, &e2di)) { 807 _kvm_err(kd, kd->program, "can't read dinode at %p", 808 inode.i_e2din); 809 return (-1); 810 } 811 812 inode.i_e2din = &e2di; 813 814 kf->va_fsid = inode.i_dev & 0xffff; 815 kf->va_fileid = (long)inode.i_number; 816 kf->va_mode = inode.i_e2fs_mode; 817 kf->va_size = inode.i_e2fs_size; 818 kf->va_rdev = 0; /* XXX */ 819 kf->va_nlink = inode.i_e2fs_nlink; 820 821 return (0); 822 } 823 824 static int 825 msdos_filestat(kvm_t *kd, struct kinfo_file *kf, struct vnode *vp) 826 { 827 struct denode de; 828 struct msdosfsmount mp; 829 830 if (KREAD(kd, (u_long)VTODE(vp), &de)) { 831 _kvm_err(kd, kd->program, "can't read denode at %p", VTODE(vp)); 832 return (-1); 833 } 834 if (KREAD(kd, (u_long)de.de_pmp, &mp)) { 835 _kvm_err(kd, kd->program, "can't read mount struct at %p", 836 de.de_pmp); 837 return (-1); 838 } 839 840 kf->va_fsid = de.de_dev & 0xffff; 841 kf->va_fileid = 0; /* XXX see msdosfs_vptofh() for more info */ 842 kf->va_mode = (mp.pm_mask & 0777) | _kvm_getftype(vp->v_type); 843 kf->va_size = de.de_FileSize; 844 kf->va_rdev = 0; /* msdosfs doesn't support device files */ 845 kf->va_nlink = 1; 846 847 return (0); 848 } 849 850 static int 851 nfs_filestat(kvm_t *kd, struct kinfo_file *kf, struct vnode *vp) 852 { 853 struct nfsnode nfsnode; 854 855 if (KREAD(kd, (u_long)VTONFS(vp), &nfsnode)) { 856 _kvm_err(kd, kd->program, "can't read nfsnode at %p", 857 VTONFS(vp)); 858 return (-1); 859 } 860 kf->va_fsid = nfsnode.n_vattr.va_fsid; 861 kf->va_fileid = nfsnode.n_vattr.va_fileid; 862 kf->va_size = nfsnode.n_size; 863 kf->va_rdev = nfsnode.n_vattr.va_rdev; 864 kf->va_mode = (mode_t)nfsnode.n_vattr.va_mode | _kvm_getftype(vp->v_type); 865 kf->va_nlink = nfsnode.n_vattr.va_nlink; 866 867 return (0); 868 } 869 870 static int 871 spec_filestat(kvm_t *kd, struct kinfo_file *kf, struct vnode *vp) 872 { 873 struct specinfo specinfo; 874 struct vnode parent; 875 876 if (KREAD(kd, (u_long)vp->v_specinfo, &specinfo)) { 877 _kvm_err(kd, kd->program, "can't read specinfo at %p", 878 vp->v_specinfo); 879 return (-1); 880 } 881 882 vp->v_specinfo = &specinfo; 883 884 if (KREAD(kd, (u_long)vp->v_specparent, &parent)) { 885 _kvm_err(kd, kd->program, "can't read parent vnode at %p", 886 vp->v_specparent); 887 return (-1); 888 } 889 890 if (ufs_filestat(kd, kf, vp)) 891 return (-1); 892 893 return (0); 894 } 895 896 static int 897 filestat(kvm_t *kd, struct kinfo_file *kf, struct vnode *vp) 898 { 899 int ret = 0; 900 901 if (vp->v_type != VNON && vp->v_type != VBAD) { 902 switch (vp->v_tag) { 903 case VT_UFS: 904 case VT_MFS: 905 ret = ufs_filestat(kd, kf, vp); 906 break; 907 case VT_NFS: 908 ret = nfs_filestat(kd, kf, vp); 909 break; 910 case VT_EXT2FS: 911 ret = ext2fs_filestat(kd, kf, vp); 912 break; 913 case VT_ISOFS: 914 ret = _kvm_stat_cd9660(kd, kf, vp); 915 break; 916 case VT_MSDOSFS: 917 ret = msdos_filestat(kd, kf, vp); 918 break; 919 case VT_UDF: 920 ret = _kvm_stat_udf(kd, kf, vp); 921 break; 922 case VT_NTFS: 923 ret = _kvm_stat_ntfs(kd, kf, vp); 924 break; 925 case VT_NON: 926 if (vp->v_flag & VCLONE) 927 ret = spec_filestat(kd, kf, vp); 928 break; 929 default: 930 ret = -1; 931 break; 932 } 933 } 934 return (ret); 935 } 936