1 /* $OpenBSD: kvm_file2.c,v 1.51 2016/11/07 00:26:33 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 #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 <nlist.h> 109 #include <kvm.h> 110 #include <db.h> 111 #include <stddef.h> 112 #include <stdlib.h> 113 #include <string.h> 114 #include <unistd.h> 115 #include <limits.h> 116 #include <errno.h> 117 118 #include "kvm_private.h" 119 #include "kvm_file.h" 120 121 static struct kinfo_file *kvm_deadfile_byfile(kvm_t *, int, int, 122 size_t, int *); 123 static struct kinfo_file *kvm_deadfile_byid(kvm_t *, int, int, 124 size_t, int *); 125 static int fill_file(kvm_t *, struct kinfo_file *, struct file *, u_long, 126 struct vnode *, struct process *, int, pid_t); 127 static int filestat(kvm_t *, struct kinfo_file *, struct vnode *); 128 129 LIST_HEAD(processlist, process); 130 131 struct kinfo_file * 132 kvm_getfiles(kvm_t *kd, int op, int arg, size_t esize, int *cnt) 133 { 134 int mib[6], rv; 135 void *filebase; 136 size_t size; 137 138 if (ISALIVE(kd)) { 139 mib[0] = CTL_KERN; 140 mib[1] = KERN_FILE; 141 mib[2] = op; 142 mib[3] = arg; 143 mib[4] = esize; 144 145 do { 146 mib[5] = 0; 147 148 /* find size and alloc buffer */ 149 rv = sysctl(mib, 6, NULL, &size, NULL, 0); 150 if (rv == -1) { 151 if (errno != ESRCH && kd->vmfd != -1) 152 goto deadway; 153 _kvm_syserr(kd, kd->program, "kvm_getfiles"); 154 return (NULL); 155 } 156 157 size += size / 8; /* add ~10% */ 158 159 filebase = _kvm_realloc(kd, kd->filebase, size); 160 if (filebase == NULL) 161 return (NULL); 162 163 kd->filebase = filebase; 164 165 /* get actual data */ 166 mib[5] = size / esize; 167 rv = sysctl(mib, 6, kd->filebase, &size, NULL, 0); 168 if (rv == -1 && errno != ENOMEM) { 169 _kvm_syserr(kd, kd->program, 170 "kvm_getfiles"); 171 return (NULL); 172 } 173 } while (rv == -1); 174 175 *cnt = size / esize; 176 return (kd->filebase); 177 } else { 178 if (esize > sizeof(struct kinfo_file)) { 179 _kvm_syserr(kd, kd->program, 180 "kvm_getfiles: unknown fields requested: libkvm out of date?"); 181 return (NULL); 182 } 183 deadway: 184 switch (op) { 185 case KERN_FILE_BYFILE: 186 return (kvm_deadfile_byfile(kd, op, arg, esize, cnt)); 187 break; 188 case KERN_FILE_BYPID: 189 case KERN_FILE_BYUID: 190 return (kvm_deadfile_byid(kd, op, arg, esize, cnt)); 191 break; 192 default: 193 return (NULL); 194 } 195 } 196 } 197 198 static struct kinfo_file * 199 kvm_deadfile_byfile(kvm_t *kd, int op, int arg, size_t esize, int *cnt) 200 { 201 struct nlist nl[3], *p; 202 size_t buflen; 203 int n = 0; 204 char *where; 205 struct kinfo_file kf; 206 struct file *fp, file; 207 struct filelist filehead; 208 int nfiles; 209 210 nl[0].n_name = "_filehead"; 211 nl[1].n_name = "_nfiles"; 212 nl[2].n_name = 0; 213 214 if (kvm_nlist(kd, nl) != 0) { 215 for (p = nl; p->n_type != 0; ++p) 216 ; 217 _kvm_err(kd, kd->program, 218 "%s: no such symbol", p->n_name); 219 return (NULL); 220 } 221 if (KREAD(kd, nl[0].n_value, &filehead)) { 222 _kvm_err(kd, kd->program, "can't read filehead"); 223 return (NULL); 224 } 225 if (KREAD(kd, nl[1].n_value, &nfiles)) { 226 _kvm_err(kd, kd->program, "can't read nfiles"); 227 return (NULL); 228 } 229 where = _kvm_reallocarray(kd, kd->filebase, nfiles, esize); 230 if (where == NULL) 231 return (NULL); 232 233 kd->filebase = (void *)where; 234 buflen = nfiles * esize; 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 (file.f_count == 0) 244 continue; 245 if (arg != 0 && file.f_type != arg) 246 continue; 247 if (fill_file(kd, &kf, &file, (u_long)fp, NULL, NULL, 0, 0) 248 == -1) 249 return (NULL); 250 memcpy(where, &kf, esize); 251 where += esize; 252 buflen -= esize; 253 n++; 254 } 255 if (n != nfiles) { 256 _kvm_err(kd, kd->program, "inconsistent nfiles"); 257 return (NULL); 258 } 259 *cnt = n; 260 return (kd->filebase); 261 } 262 263 static struct kinfo_file * 264 kvm_deadfile_byid(kvm_t *kd, int op, int arg, size_t esize, int *cnt) 265 { 266 size_t buflen; 267 struct nlist nl[4], *np; 268 int n = 0, matched = 0; 269 char *where; 270 struct kinfo_file kf; 271 struct file *fp, file; 272 struct filelist filehead; 273 struct filedesc0 filed0; 274 #define filed filed0.fd_fd 275 struct processlist allprocess; 276 struct proc proc; 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 = "_nfiles"; 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 (process.ps_mainproc == NULL) 331 continue; 332 /* XXX only needed for p_comm now */ 333 if (KREAD(kd, (u_long)process.ps_mainproc, &proc)) { 334 _kvm_err(kd, kd->program, "can't read proc at %lx", 335 (u_long)process.ps_mainproc); 336 goto cleanup; 337 } 338 339 if (op == KERN_FILE_BYPID) { 340 /* check if this is the pid we are looking for */ 341 if (arg > 0 && process.ps_pid != (pid_t)arg) 342 continue; 343 matched = 1; 344 } 345 346 if (KREAD(kd, (u_long)process.ps_ucred, &ucred)) { 347 _kvm_err(kd, kd->program, "can't read ucred at %lx", 348 (u_long)process.ps_ucred); 349 goto cleanup; 350 } 351 process.ps_mainproc = &proc; 352 proc.p_p = &process; 353 process.ps_ucred = &ucred; 354 355 if (op == KERN_FILE_BYUID && arg >= 0 && 356 process.ps_ucred->cr_uid != (uid_t)arg) { 357 /* not the uid we are looking for */ 358 continue; 359 } 360 361 if (KREAD(kd, (u_long)process.ps_fd, &filed0)) { 362 _kvm_err(kd, kd->program, "can't read filedesc at %lx", 363 (u_long)process.ps_fd); 364 goto cleanup; 365 } 366 if ((char *)process.ps_fd + offsetof(struct filedesc0,fd_dfiles) 367 == (char *)filed.fd_ofiles) { 368 filed.fd_ofiles = filed0.fd_dfiles; 369 filed.fd_ofileflags = filed0.fd_dfileflags; 370 } else { 371 size_t fsize; 372 char *tmp = reallocarray(filebuf, 373 filed.fd_nfiles, OFILESIZE); 374 375 fsize = filed.fd_nfiles * OFILESIZE; 376 if (tmp == NULL) { 377 _kvm_syserr(kd, kd->program, "realloc ofiles"); 378 goto cleanup; 379 } 380 filebuf = tmp; 381 if (kvm_read(kd, (u_long)filed.fd_ofiles, filebuf, 382 fsize) != fsize) { 383 _kvm_err(kd, kd->program, 384 "can't read fd_ofiles"); 385 goto cleanup; 386 } 387 filed.fd_ofiles = (void *)filebuf; 388 filed.fd_ofileflags = filebuf + 389 (filed.fd_nfiles * sizeof(struct file *)); 390 } 391 process.ps_fd = &filed; 392 393 if (process.ps_textvp) { 394 if (buflen < esize) 395 goto done; 396 if (fill_file(kd, &kf, NULL, 0, process.ps_textvp, 397 &process, KERN_FILE_TEXT, 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_cdir) { 405 if (buflen < esize) 406 goto done; 407 if (fill_file(kd, &kf, NULL, 0, filed.fd_cdir, 408 &process, KERN_FILE_CDIR, process.ps_pid) == -1) 409 goto cleanup; 410 memcpy(where, &kf, esize); 411 where += esize; 412 buflen -= esize; 413 n++; 414 } 415 if (filed.fd_rdir) { 416 if (buflen < esize) 417 goto done; 418 if (fill_file(kd, &kf, NULL, 0, filed.fd_rdir, 419 &process, KERN_FILE_RDIR, process.ps_pid) == -1) 420 goto cleanup; 421 memcpy(where, &kf, esize); 422 where += esize; 423 buflen -= esize; 424 n++; 425 } 426 if (process.ps_tracevp) { 427 if (buflen < esize) 428 goto done; 429 if (fill_file(kd, &kf, NULL, 0, process.ps_tracevp, 430 &process, KERN_FILE_TRACE, process.ps_pid) == -1) 431 goto cleanup; 432 memcpy(where, &kf, esize); 433 where += esize; 434 buflen -= esize; 435 n++; 436 } 437 438 if (filed.fd_nfiles < 0 || 439 filed.fd_lastfile >= filed.fd_nfiles || 440 filed.fd_freefile > filed.fd_lastfile + 1) { 441 _kvm_err(kd, kd->program, 442 "filedesc corrupted at %lx for pid %d", 443 (u_long)process.ps_fd, process.ps_pid); 444 goto cleanup; 445 } 446 447 for (i = 0; i < filed.fd_nfiles; i++) { 448 if (buflen < esize) 449 goto done; 450 if ((fp = filed.fd_ofiles[i]) == NULL) 451 continue; 452 if (KREAD(kd, (u_long)fp, &file)) { 453 _kvm_err(kd, kd->program, "can't read file"); 454 goto cleanup; 455 } 456 if (fill_file(kd, &kf, &file, (u_long)fp, NULL, 457 &process, i, process.ps_pid) == -1) 458 goto cleanup; 459 memcpy(where, &kf, esize); 460 where += esize; 461 buflen -= esize; 462 n++; 463 } 464 } 465 if (!matched) { 466 errno = ESRCH; 467 goto cleanup; 468 } 469 done: 470 *cnt = n; 471 free(filebuf); 472 return (kd->filebase); 473 cleanup: 474 free(filebuf); 475 return (NULL); 476 } 477 478 static int 479 fill_file(kvm_t *kd, struct kinfo_file *kf, struct file *fp, u_long fpaddr, 480 struct vnode *vp, struct process *pr, int fd, pid_t pid) 481 { 482 struct ucred f_cred; 483 484 memset(kf, 0, sizeof(*kf)); 485 486 kf->fd_fd = fd; /* might not really be an fd */ 487 488 if (fp != NULL) { 489 /* Fill in f_cred */ 490 if (KREAD(kd, (u_long)fp->f_cred, &f_cred)) { 491 _kvm_err(kd, kd->program, "can't read f_cred"); 492 return (-1); 493 } 494 495 kf->f_fileaddr = PTRTOINT64(fpaddr); 496 kf->f_flag = fp->f_flag; 497 kf->f_iflags = fp->f_iflags; 498 kf->f_type = fp->f_type; 499 kf->f_count = fp->f_count; 500 kf->f_ucred = PTRTOINT64(fp->f_cred); 501 kf->f_uid = f_cred.cr_uid; 502 kf->f_gid = f_cred.cr_gid; 503 kf->f_ops = PTRTOINT64(fp->f_ops); 504 kf->f_offset = fp->f_offset; 505 kf->f_data = PTRTOINT64(fp->f_data); 506 kf->f_usecount = 0; 507 508 kf->f_rxfer = fp->f_rxfer; 509 kf->f_rwfer = fp->f_wxfer; 510 kf->f_seek = fp->f_seek; 511 kf->f_rbytes = fp->f_rbytes; 512 kf->f_wbytes = fp->f_wbytes; 513 } else if (vp != NULL) { 514 /* fake it */ 515 kf->f_type = DTYPE_VNODE; 516 kf->f_flag = FREAD; 517 if (fd == KERN_FILE_TRACE) 518 kf->f_flag |= FWRITE; 519 kf->f_data = PTRTOINT64(vp); 520 } 521 522 /* information about the object associated with this file */ 523 switch (kf->f_type) { 524 case DTYPE_VNODE: { 525 struct vnode vbuf; 526 527 if (KREAD(kd, (u_long)(fp ? fp->f_data : vp), &vbuf)) { 528 _kvm_err(kd, kd->program, "can't read vnode"); 529 return (-1); 530 } 531 vp = &vbuf; 532 533 kf->v_un = PTRTOINT64(vp->v_un.vu_socket); 534 kf->v_type = vp->v_type; 535 kf->v_tag = vp->v_tag; 536 kf->v_flag = vp->v_flag; 537 kf->v_data = PTRTOINT64(vp->v_data); 538 kf->v_mount = PTRTOINT64(vp->v_mount); 539 540 if (vp->v_mount != NULL) { 541 struct mount mount; 542 543 if (KREAD(kd, (u_long)vp->v_mount, &mount)) { 544 _kvm_err(kd, kd->program, "can't read v_mount"); 545 return (-1); 546 } 547 548 strlcpy(kf->f_mntonname, mount.mnt_stat.f_mntonname, 549 sizeof(kf->f_mntonname)); 550 } 551 552 /* Fill in va_fsid, va_fileid, va_mode, va_size, va_rdev */ 553 filestat(kd, kf, vp); 554 break; 555 } 556 557 case DTYPE_SOCKET: { 558 struct socket sock; 559 struct sosplice ssp; 560 struct protosw protosw; 561 struct domain domain; 562 563 if (KREAD(kd, (u_long)fp->f_data, &sock)) { 564 _kvm_err(kd, kd->program, "can't read socket"); 565 return (-1); 566 } 567 568 kf->so_type = sock.so_type; 569 kf->so_state = sock.so_state; 570 kf->so_pcb = PTRTOINT64(sock.so_pcb); 571 if (KREAD(kd, (u_long)sock.so_proto, &protosw)) { 572 _kvm_err(kd, kd->program, "can't read protosw"); 573 return (-1); 574 } 575 kf->so_protocol = protosw.pr_protocol; 576 if (KREAD(kd, (u_long)protosw.pr_domain, &domain)) { 577 _kvm_err(kd, kd->program, "can't read domain"); 578 return (-1); 579 } 580 kf->so_family = domain.dom_family; 581 kf->so_rcv_cc = sock.so_rcv.sb_cc; 582 kf->so_snd_cc = sock.so_snd.sb_cc; 583 if (sock.so_sp) { 584 if (KREAD(kd, (u_long)sock.so_sp, &ssp)) { 585 _kvm_err(kd, kd->program, "can't read splice"); 586 return (-1); 587 } 588 if (ssp.ssp_socket) { 589 kf->so_splice = PTRTOINT64(ssp.ssp_socket); 590 kf->so_splicelen = ssp.ssp_len; 591 } else if (ssp.ssp_soback) { 592 kf->so_splicelen = -1; 593 } 594 } 595 if (!sock.so_pcb) 596 break; 597 switch (kf->so_family) { 598 case AF_INET: { 599 struct inpcb inpcb; 600 601 if (KREAD(kd, (u_long)sock.so_pcb, &inpcb)) { 602 _kvm_err(kd, kd->program, "can't read inpcb"); 603 return (-1); 604 } 605 kf->inp_ppcb = PTRTOINT64(inpcb.inp_ppcb); 606 kf->inp_lport = inpcb.inp_lport; 607 kf->inp_laddru[0] = inpcb.inp_laddr.s_addr; 608 kf->inp_fport = inpcb.inp_fport; 609 kf->inp_faddru[0] = inpcb.inp_faddr.s_addr; 610 kf->inp_rtableid = inpcb.inp_rtableid; 611 if (sock.so_type == SOCK_RAW) 612 kf->inp_proto = inpcb.inp_ip.ip_p; 613 if (protosw.pr_protocol == IPPROTO_TCP) { 614 struct tcpcb tcpcb; 615 if (KREAD(kd, (u_long)inpcb.inp_ppcb, &tcpcb)) { 616 _kvm_err(kd, kd->program, 617 "can't read tcpcb"); 618 return (-1); 619 } 620 kf->t_rcv_wnd = tcpcb.rcv_wnd; 621 kf->t_snd_wnd = tcpcb.snd_wnd; 622 kf->t_snd_cwnd = tcpcb.snd_cwnd; 623 kf->t_state = tcpcb.t_state; 624 } 625 break; 626 } 627 case AF_INET6: { 628 struct inpcb inpcb; 629 #define s6_addr32 __u6_addr.__u6_addr32 630 631 if (KREAD(kd, (u_long)sock.so_pcb, &inpcb)) { 632 _kvm_err(kd, kd->program, "can't read inpcb"); 633 return (-1); 634 } 635 kf->inp_ppcb = PTRTOINT64(inpcb.inp_ppcb); 636 kf->inp_lport = inpcb.inp_lport; 637 kf->inp_laddru[0] = inpcb.inp_laddr6.s6_addr32[0]; 638 kf->inp_laddru[1] = inpcb.inp_laddr6.s6_addr32[1]; 639 kf->inp_laddru[2] = inpcb.inp_laddr6.s6_addr32[2]; 640 kf->inp_laddru[3] = inpcb.inp_laddr6.s6_addr32[3]; 641 kf->inp_fport = inpcb.inp_fport; 642 kf->inp_faddru[0] = inpcb.inp_laddr6.s6_addr32[0]; 643 kf->inp_faddru[1] = inpcb.inp_faddr6.s6_addr32[1]; 644 kf->inp_faddru[2] = inpcb.inp_faddr6.s6_addr32[2]; 645 kf->inp_faddru[3] = inpcb.inp_faddr6.s6_addr32[3]; 646 kf->inp_rtableid = inpcb.inp_rtableid; 647 if (sock.so_type == SOCK_RAW) 648 kf->inp_proto = inpcb.inp_ipv6.ip6_nxt; 649 if (protosw.pr_protocol == IPPROTO_TCP) { 650 struct tcpcb tcpcb; 651 if (KREAD(kd, (u_long)inpcb.inp_ppcb, &tcpcb)) { 652 _kvm_err(kd, kd->program, 653 "can't read tcpcb"); 654 return (-1); 655 } 656 kf->t_rcv_wnd = tcpcb.rcv_wnd; 657 kf->t_snd_wnd = tcpcb.snd_wnd; 658 kf->t_snd_cwnd = tcpcb.snd_cwnd; 659 kf->t_state = tcpcb.t_state; 660 } 661 break; 662 } 663 case AF_UNIX: { 664 struct unpcb unpcb; 665 666 if (KREAD(kd, (u_long)sock.so_pcb, &unpcb)) { 667 _kvm_err(kd, kd->program, "can't read unpcb"); 668 return (-1); 669 } 670 kf->f_msgcount = unpcb.unp_msgcount; 671 kf->unp_conn = PTRTOINT64(unpcb.unp_conn); 672 kf->unp_refs = PTRTOINT64( 673 SLIST_FIRST(&unpcb.unp_refs)); 674 kf->unp_nextref = PTRTOINT64( 675 SLIST_NEXT(&unpcb, unp_nextref)); 676 kf->v_un = PTRTOINT64(unpcb.unp_vnode); 677 if (unpcb.unp_addr != NULL) { 678 struct mbuf mb; 679 struct sockaddr_un un; 680 681 if (KREAD(kd, (u_long)unpcb.unp_addr, &mb)) { 682 _kvm_err(kd, kd->program, 683 "can't read sockaddr_un mbuf"); 684 return (-1); 685 } 686 if (KREAD(kd, (u_long)mb.m_data, &un)) { 687 _kvm_err(kd, kd->program, 688 "can't read sockaddr_un"); 689 return (-1); 690 } 691 692 kf->unp_addr = PTRTOINT64(unpcb.unp_addr); 693 memcpy(kf->unp_path, un.sun_path, un.sun_len 694 - offsetof(struct sockaddr_un,sun_path)); 695 } 696 697 break; 698 } 699 } 700 break; 701 } 702 703 case DTYPE_PIPE: { 704 struct pipe pipe; 705 706 if (KREAD(kd, (u_long)fp->f_data, &pipe)) { 707 _kvm_err(kd, kd->program, "can't read pipe"); 708 return (-1); 709 } 710 kf->pipe_peer = PTRTOINT64(pipe.pipe_peer); 711 kf->pipe_state = pipe.pipe_state; 712 break; 713 } 714 715 case DTYPE_KQUEUE: { 716 struct kqueue kqi; 717 718 if (KREAD(kd, (u_long)fp->f_data, &kqi)) { 719 _kvm_err(kd, kd->program, "can't read kqi"); 720 return (-1); 721 } 722 kf->kq_count = kqi.kq_count; 723 kf->kq_state = kqi.kq_state; 724 break; 725 } 726 } 727 728 /* per-process information for KERN_FILE_BY[PU]ID */ 729 if (pr != NULL) { 730 kf->p_pid = pid; 731 kf->p_uid = pr->ps_ucred->cr_uid; 732 kf->p_gid = pr->ps_ucred->cr_gid; 733 kf->p_tid = -1; 734 strlcpy(kf->p_comm, pr->ps_mainproc->p_comm, 735 sizeof(kf->p_comm)); 736 if (pr->ps_fd != NULL) 737 kf->fd_ofileflags = pr->ps_fd->fd_ofileflags[fd]; 738 } 739 740 return (0); 741 } 742 743 mode_t 744 _kvm_getftype(enum vtype v_type) 745 { 746 mode_t ftype = 0; 747 748 switch (v_type) { 749 case VREG: 750 ftype = S_IFREG; 751 break; 752 case VDIR: 753 ftype = S_IFDIR; 754 break; 755 case VBLK: 756 ftype = S_IFBLK; 757 break; 758 case VCHR: 759 ftype = S_IFCHR; 760 break; 761 case VLNK: 762 ftype = S_IFLNK; 763 break; 764 case VSOCK: 765 ftype = S_IFSOCK; 766 break; 767 case VFIFO: 768 ftype = S_IFIFO; 769 break; 770 case VNON: 771 case VBAD: 772 break; 773 } 774 775 return (ftype); 776 } 777 778 static int 779 ufs_filestat(kvm_t *kd, struct kinfo_file *kf, struct vnode *vp) 780 { 781 struct inode inode; 782 struct ufs1_dinode di1; 783 784 if (KREAD(kd, (u_long)VTOI(vp), &inode)) { 785 _kvm_err(kd, kd->program, "can't read inode at %p", VTOI(vp)); 786 return (-1); 787 } 788 789 if (KREAD(kd, (u_long)inode.i_din1, &di1)) { 790 _kvm_err(kd, kd->program, "can't read dinode at %p", 791 inode.i_din1); 792 return (-1); 793 } 794 795 inode.i_din1 = &di1; 796 797 kf->va_fsid = inode.i_dev & 0xffff; 798 kf->va_fileid = (long)inode.i_number; 799 kf->va_mode = inode.i_ffs1_mode; 800 kf->va_size = inode.i_ffs1_size; 801 kf->va_rdev = inode.i_ffs1_rdev; 802 kf->va_nlink = inode.i_ffs1_nlink; 803 804 return (0); 805 } 806 807 static int 808 ext2fs_filestat(kvm_t *kd, struct kinfo_file *kf, struct vnode *vp) 809 { 810 struct inode inode; 811 struct ext2fs_dinode e2di; 812 813 if (KREAD(kd, (u_long)VTOI(vp), &inode)) { 814 _kvm_err(kd, kd->program, "can't read inode at %p", VTOI(vp)); 815 return (-1); 816 } 817 818 if (KREAD(kd, (u_long)inode.i_e2din, &e2di)) { 819 _kvm_err(kd, kd->program, "can't read dinode at %p", 820 inode.i_e2din); 821 return (-1); 822 } 823 824 inode.i_e2din = &e2di; 825 826 kf->va_fsid = inode.i_dev & 0xffff; 827 kf->va_fileid = (long)inode.i_number; 828 kf->va_mode = inode.i_e2fs_mode; 829 kf->va_size = inode.i_e2fs_size; 830 kf->va_rdev = 0; /* XXX */ 831 kf->va_nlink = inode.i_e2fs_nlink; 832 833 return (0); 834 } 835 836 static int 837 msdos_filestat(kvm_t *kd, struct kinfo_file *kf, struct vnode *vp) 838 { 839 struct denode de; 840 struct msdosfsmount mp; 841 842 if (KREAD(kd, (u_long)VTODE(vp), &de)) { 843 _kvm_err(kd, kd->program, "can't read denode at %p", VTODE(vp)); 844 return (-1); 845 } 846 if (KREAD(kd, (u_long)de.de_pmp, &mp)) { 847 _kvm_err(kd, kd->program, "can't read mount struct at %p", 848 de.de_pmp); 849 return (-1); 850 } 851 852 kf->va_fsid = de.de_dev & 0xffff; 853 kf->va_fileid = 0; /* XXX see msdosfs_vptofh() for more info */ 854 kf->va_mode = (mp.pm_mask & 0777) | _kvm_getftype(vp->v_type); 855 kf->va_size = de.de_FileSize; 856 kf->va_rdev = 0; /* msdosfs doesn't support device files */ 857 kf->va_nlink = 1; 858 859 return (0); 860 } 861 862 static int 863 nfs_filestat(kvm_t *kd, struct kinfo_file *kf, struct vnode *vp) 864 { 865 struct nfsnode nfsnode; 866 867 if (KREAD(kd, (u_long)VTONFS(vp), &nfsnode)) { 868 _kvm_err(kd, kd->program, "can't read nfsnode at %p", 869 VTONFS(vp)); 870 return (-1); 871 } 872 kf->va_fsid = nfsnode.n_vattr.va_fsid; 873 kf->va_fileid = nfsnode.n_vattr.va_fileid; 874 kf->va_size = nfsnode.n_size; 875 kf->va_rdev = nfsnode.n_vattr.va_rdev; 876 kf->va_mode = (mode_t)nfsnode.n_vattr.va_mode | _kvm_getftype(vp->v_type); 877 kf->va_nlink = nfsnode.n_vattr.va_nlink; 878 879 return (0); 880 } 881 882 static int 883 spec_filestat(kvm_t *kd, struct kinfo_file *kf, struct vnode *vp) 884 { 885 struct specinfo specinfo; 886 struct vnode parent; 887 888 if (KREAD(kd, (u_long)vp->v_specinfo, &specinfo)) { 889 _kvm_err(kd, kd->program, "can't read specinfo at %p", 890 vp->v_specinfo); 891 return (-1); 892 } 893 894 vp->v_specinfo = &specinfo; 895 896 if (KREAD(kd, (u_long)vp->v_specparent, &parent)) { 897 _kvm_err(kd, kd->program, "can't read parent vnode at %p", 898 vp->v_specparent); 899 return (-1); 900 } 901 902 if (ufs_filestat(kd, kf, vp)) 903 return (-1); 904 905 return (0); 906 } 907 908 static int 909 filestat(kvm_t *kd, struct kinfo_file *kf, struct vnode *vp) 910 { 911 int ret = 0; 912 913 if (vp->v_type != VNON && vp->v_type != VBAD) { 914 switch (vp->v_tag) { 915 case VT_UFS: 916 case VT_MFS: 917 ret = ufs_filestat(kd, kf, vp); 918 break; 919 case VT_NFS: 920 ret = nfs_filestat(kd, kf, vp); 921 break; 922 case VT_EXT2FS: 923 ret = ext2fs_filestat(kd, kf, vp); 924 break; 925 case VT_ISOFS: 926 ret = _kvm_stat_cd9660(kd, kf, vp); 927 break; 928 case VT_MSDOSFS: 929 ret = msdos_filestat(kd, kf, vp); 930 break; 931 case VT_UDF: 932 ret = _kvm_stat_udf(kd, kf, vp); 933 break; 934 case VT_NTFS: 935 ret = _kvm_stat_ntfs(kd, kf, vp); 936 break; 937 case VT_NON: 938 if (vp->v_flag & VCLONE) 939 ret = spec_filestat(kd, kf, vp); 940 break; 941 default: 942 ret = -1; 943 break; 944 } 945 } 946 return (ret); 947 } 948