1 /* $OpenBSD: kvm_file2.c,v 1.52 2017/01/21 05:42:04 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 process *pr, process; 277 struct ucred ucred; 278 char *filebuf = NULL; 279 int i, nfiles; 280 281 nl[0].n_name = "_filehead"; 282 nl[1].n_name = "_nfiles"; 283 nl[2].n_name = "_allprocess"; 284 nl[3].n_name = 0; 285 286 if (kvm_nlist(kd, nl) != 0) { 287 for (np = nl; np->n_type != 0; ++np) 288 ; 289 _kvm_err(kd, kd->program, 290 "%s: no such symbol", np->n_name); 291 return (NULL); 292 } 293 if (KREAD(kd, nl[0].n_value, &filehead)) { 294 _kvm_err(kd, kd->program, "can't read filehead"); 295 return (NULL); 296 } 297 if (KREAD(kd, nl[1].n_value, &nfiles)) { 298 _kvm_err(kd, kd->program, "can't read nfiles"); 299 return (NULL); 300 } 301 if (KREAD(kd, nl[2].n_value, &allprocess)) { 302 _kvm_err(kd, kd->program, "can't read allprocess"); 303 return (NULL); 304 } 305 /* this may be more room than we need but counting is expensive */ 306 where = _kvm_reallocarray(kd, kd->filebase, nfiles + 10, esize); 307 if (where == NULL) 308 return (NULL); 309 310 kd->filebase = (void *)where; 311 buflen = (nfiles + 10) * esize; 312 313 if (op != KERN_FILE_BYPID || arg <= 0) 314 matched = 1; 315 316 for (pr = LIST_FIRST(&allprocess); 317 pr != NULL; 318 pr = LIST_NEXT(&process, ps_list)) { 319 if (KREAD(kd, (u_long)pr, &process)) { 320 _kvm_err(kd, kd->program, "can't read process at %lx", 321 (u_long)pr); 322 goto cleanup; 323 } 324 325 /* skip system, exiting, embryonic and undead processes */ 326 if (process.ps_flags & (PS_SYSTEM | PS_EMBRYO | PS_EXITING)) 327 continue; 328 329 if (op == KERN_FILE_BYPID) { 330 /* check if this is the pid we are looking for */ 331 if (arg > 0 && process.ps_pid != (pid_t)arg) 332 continue; 333 matched = 1; 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_ucred = &ucred; 342 343 if (op == KERN_FILE_BYUID && arg >= 0 && 344 process.ps_ucred->cr_uid != (uid_t)arg) { 345 /* not the uid we are looking for */ 346 continue; 347 } 348 349 if (KREAD(kd, (u_long)process.ps_fd, &filed0)) { 350 _kvm_err(kd, kd->program, "can't read filedesc at %lx", 351 (u_long)process.ps_fd); 352 goto cleanup; 353 } 354 if ((char *)process.ps_fd + offsetof(struct filedesc0,fd_dfiles) 355 == (char *)filed.fd_ofiles) { 356 filed.fd_ofiles = filed0.fd_dfiles; 357 filed.fd_ofileflags = filed0.fd_dfileflags; 358 } else { 359 size_t fsize; 360 char *tmp = reallocarray(filebuf, 361 filed.fd_nfiles, OFILESIZE); 362 363 fsize = filed.fd_nfiles * OFILESIZE; 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, process.ps_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, process.ps_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, process.ps_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, process.ps_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, process.ps_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, process.ps_pid) == -1) 446 goto cleanup; 447 memcpy(where, &kf, esize); 448 where += esize; 449 buflen -= esize; 450 n++; 451 } 452 } 453 if (!matched) { 454 errno = ESRCH; 455 goto cleanup; 456 } 457 done: 458 *cnt = n; 459 free(filebuf); 460 return (kd->filebase); 461 cleanup: 462 free(filebuf); 463 return (NULL); 464 } 465 466 static int 467 fill_file(kvm_t *kd, struct kinfo_file *kf, struct file *fp, u_long fpaddr, 468 struct vnode *vp, struct process *pr, int fd, pid_t pid) 469 { 470 struct ucred f_cred; 471 472 memset(kf, 0, sizeof(*kf)); 473 474 kf->fd_fd = fd; /* might not really be an fd */ 475 476 if (fp != NULL) { 477 /* Fill in f_cred */ 478 if (KREAD(kd, (u_long)fp->f_cred, &f_cred)) { 479 _kvm_err(kd, kd->program, "can't read f_cred"); 480 return (-1); 481 } 482 483 kf->f_fileaddr = PTRTOINT64(fpaddr); 484 kf->f_flag = fp->f_flag; 485 kf->f_iflags = fp->f_iflags; 486 kf->f_type = fp->f_type; 487 kf->f_count = fp->f_count; 488 kf->f_ucred = PTRTOINT64(fp->f_cred); 489 kf->f_uid = f_cred.cr_uid; 490 kf->f_gid = f_cred.cr_gid; 491 kf->f_ops = PTRTOINT64(fp->f_ops); 492 kf->f_offset = fp->f_offset; 493 kf->f_data = PTRTOINT64(fp->f_data); 494 kf->f_usecount = 0; 495 496 kf->f_rxfer = fp->f_rxfer; 497 kf->f_rwfer = fp->f_wxfer; 498 kf->f_seek = fp->f_seek; 499 kf->f_rbytes = fp->f_rbytes; 500 kf->f_wbytes = fp->f_wbytes; 501 } else if (vp != NULL) { 502 /* fake it */ 503 kf->f_type = DTYPE_VNODE; 504 kf->f_flag = FREAD; 505 if (fd == KERN_FILE_TRACE) 506 kf->f_flag |= FWRITE; 507 kf->f_data = PTRTOINT64(vp); 508 } 509 510 /* information about the object associated with this file */ 511 switch (kf->f_type) { 512 case DTYPE_VNODE: { 513 struct vnode vbuf; 514 515 if (KREAD(kd, (u_long)(fp ? fp->f_data : vp), &vbuf)) { 516 _kvm_err(kd, kd->program, "can't read vnode"); 517 return (-1); 518 } 519 vp = &vbuf; 520 521 kf->v_un = PTRTOINT64(vp->v_un.vu_socket); 522 kf->v_type = vp->v_type; 523 kf->v_tag = vp->v_tag; 524 kf->v_flag = vp->v_flag; 525 kf->v_data = PTRTOINT64(vp->v_data); 526 kf->v_mount = PTRTOINT64(vp->v_mount); 527 528 if (vp->v_mount != NULL) { 529 struct mount mount; 530 531 if (KREAD(kd, (u_long)vp->v_mount, &mount)) { 532 _kvm_err(kd, kd->program, "can't read v_mount"); 533 return (-1); 534 } 535 536 strlcpy(kf->f_mntonname, mount.mnt_stat.f_mntonname, 537 sizeof(kf->f_mntonname)); 538 } 539 540 /* Fill in va_fsid, va_fileid, va_mode, va_size, va_rdev */ 541 filestat(kd, kf, vp); 542 break; 543 } 544 545 case DTYPE_SOCKET: { 546 struct socket sock; 547 struct sosplice ssp; 548 struct protosw protosw; 549 struct domain domain; 550 551 if (KREAD(kd, (u_long)fp->f_data, &sock)) { 552 _kvm_err(kd, kd->program, "can't read socket"); 553 return (-1); 554 } 555 556 kf->so_type = sock.so_type; 557 kf->so_state = sock.so_state; 558 kf->so_pcb = PTRTOINT64(sock.so_pcb); 559 if (KREAD(kd, (u_long)sock.so_proto, &protosw)) { 560 _kvm_err(kd, kd->program, "can't read protosw"); 561 return (-1); 562 } 563 kf->so_protocol = protosw.pr_protocol; 564 if (KREAD(kd, (u_long)protosw.pr_domain, &domain)) { 565 _kvm_err(kd, kd->program, "can't read domain"); 566 return (-1); 567 } 568 kf->so_family = domain.dom_family; 569 kf->so_rcv_cc = sock.so_rcv.sb_cc; 570 kf->so_snd_cc = sock.so_snd.sb_cc; 571 if (sock.so_sp) { 572 if (KREAD(kd, (u_long)sock.so_sp, &ssp)) { 573 _kvm_err(kd, kd->program, "can't read splice"); 574 return (-1); 575 } 576 if (ssp.ssp_socket) { 577 kf->so_splice = PTRTOINT64(ssp.ssp_socket); 578 kf->so_splicelen = ssp.ssp_len; 579 } else if (ssp.ssp_soback) { 580 kf->so_splicelen = -1; 581 } 582 } 583 if (!sock.so_pcb) 584 break; 585 switch (kf->so_family) { 586 case AF_INET: { 587 struct inpcb inpcb; 588 589 if (KREAD(kd, (u_long)sock.so_pcb, &inpcb)) { 590 _kvm_err(kd, kd->program, "can't read inpcb"); 591 return (-1); 592 } 593 kf->inp_ppcb = PTRTOINT64(inpcb.inp_ppcb); 594 kf->inp_lport = inpcb.inp_lport; 595 kf->inp_laddru[0] = inpcb.inp_laddr.s_addr; 596 kf->inp_fport = inpcb.inp_fport; 597 kf->inp_faddru[0] = inpcb.inp_faddr.s_addr; 598 kf->inp_rtableid = inpcb.inp_rtableid; 599 if (sock.so_type == SOCK_RAW) 600 kf->inp_proto = inpcb.inp_ip.ip_p; 601 if (protosw.pr_protocol == IPPROTO_TCP) { 602 struct tcpcb tcpcb; 603 if (KREAD(kd, (u_long)inpcb.inp_ppcb, &tcpcb)) { 604 _kvm_err(kd, kd->program, 605 "can't read tcpcb"); 606 return (-1); 607 } 608 kf->t_rcv_wnd = tcpcb.rcv_wnd; 609 kf->t_snd_wnd = tcpcb.snd_wnd; 610 kf->t_snd_cwnd = tcpcb.snd_cwnd; 611 kf->t_state = tcpcb.t_state; 612 } 613 break; 614 } 615 case AF_INET6: { 616 struct inpcb inpcb; 617 #define s6_addr32 __u6_addr.__u6_addr32 618 619 if (KREAD(kd, (u_long)sock.so_pcb, &inpcb)) { 620 _kvm_err(kd, kd->program, "can't read inpcb"); 621 return (-1); 622 } 623 kf->inp_ppcb = PTRTOINT64(inpcb.inp_ppcb); 624 kf->inp_lport = inpcb.inp_lport; 625 kf->inp_laddru[0] = inpcb.inp_laddr6.s6_addr32[0]; 626 kf->inp_laddru[1] = inpcb.inp_laddr6.s6_addr32[1]; 627 kf->inp_laddru[2] = inpcb.inp_laddr6.s6_addr32[2]; 628 kf->inp_laddru[3] = inpcb.inp_laddr6.s6_addr32[3]; 629 kf->inp_fport = inpcb.inp_fport; 630 kf->inp_faddru[0] = inpcb.inp_laddr6.s6_addr32[0]; 631 kf->inp_faddru[1] = inpcb.inp_faddr6.s6_addr32[1]; 632 kf->inp_faddru[2] = inpcb.inp_faddr6.s6_addr32[2]; 633 kf->inp_faddru[3] = inpcb.inp_faddr6.s6_addr32[3]; 634 kf->inp_rtableid = inpcb.inp_rtableid; 635 if (sock.so_type == SOCK_RAW) 636 kf->inp_proto = inpcb.inp_ipv6.ip6_nxt; 637 if (protosw.pr_protocol == IPPROTO_TCP) { 638 struct tcpcb tcpcb; 639 if (KREAD(kd, (u_long)inpcb.inp_ppcb, &tcpcb)) { 640 _kvm_err(kd, kd->program, 641 "can't read tcpcb"); 642 return (-1); 643 } 644 kf->t_rcv_wnd = tcpcb.rcv_wnd; 645 kf->t_snd_wnd = tcpcb.snd_wnd; 646 kf->t_snd_cwnd = tcpcb.snd_cwnd; 647 kf->t_state = tcpcb.t_state; 648 } 649 break; 650 } 651 case AF_UNIX: { 652 struct unpcb unpcb; 653 654 if (KREAD(kd, (u_long)sock.so_pcb, &unpcb)) { 655 _kvm_err(kd, kd->program, "can't read unpcb"); 656 return (-1); 657 } 658 kf->f_msgcount = unpcb.unp_msgcount; 659 kf->unp_conn = PTRTOINT64(unpcb.unp_conn); 660 kf->unp_refs = PTRTOINT64( 661 SLIST_FIRST(&unpcb.unp_refs)); 662 kf->unp_nextref = PTRTOINT64( 663 SLIST_NEXT(&unpcb, unp_nextref)); 664 kf->v_un = PTRTOINT64(unpcb.unp_vnode); 665 if (unpcb.unp_addr != NULL) { 666 struct mbuf mb; 667 struct sockaddr_un un; 668 669 if (KREAD(kd, (u_long)unpcb.unp_addr, &mb)) { 670 _kvm_err(kd, kd->program, 671 "can't read sockaddr_un mbuf"); 672 return (-1); 673 } 674 if (KREAD(kd, (u_long)mb.m_data, &un)) { 675 _kvm_err(kd, kd->program, 676 "can't read sockaddr_un"); 677 return (-1); 678 } 679 680 kf->unp_addr = PTRTOINT64(unpcb.unp_addr); 681 memcpy(kf->unp_path, un.sun_path, un.sun_len 682 - offsetof(struct sockaddr_un,sun_path)); 683 } 684 685 break; 686 } 687 } 688 break; 689 } 690 691 case DTYPE_PIPE: { 692 struct pipe pipe; 693 694 if (KREAD(kd, (u_long)fp->f_data, &pipe)) { 695 _kvm_err(kd, kd->program, "can't read pipe"); 696 return (-1); 697 } 698 kf->pipe_peer = PTRTOINT64(pipe.pipe_peer); 699 kf->pipe_state = pipe.pipe_state; 700 break; 701 } 702 703 case DTYPE_KQUEUE: { 704 struct kqueue kqi; 705 706 if (KREAD(kd, (u_long)fp->f_data, &kqi)) { 707 _kvm_err(kd, kd->program, "can't read kqi"); 708 return (-1); 709 } 710 kf->kq_count = kqi.kq_count; 711 kf->kq_state = kqi.kq_state; 712 break; 713 } 714 } 715 716 /* per-process information for KERN_FILE_BY[PU]ID */ 717 if (pr != NULL) { 718 kf->p_pid = pid; 719 kf->p_uid = pr->ps_ucred->cr_uid; 720 kf->p_gid = pr->ps_ucred->cr_gid; 721 kf->p_tid = -1; 722 strlcpy(kf->p_comm, pr->ps_comm, sizeof(kf->p_comm)); 723 if (pr->ps_fd != NULL) 724 kf->fd_ofileflags = pr->ps_fd->fd_ofileflags[fd]; 725 } 726 727 return (0); 728 } 729 730 mode_t 731 _kvm_getftype(enum vtype v_type) 732 { 733 mode_t ftype = 0; 734 735 switch (v_type) { 736 case VREG: 737 ftype = S_IFREG; 738 break; 739 case VDIR: 740 ftype = S_IFDIR; 741 break; 742 case VBLK: 743 ftype = S_IFBLK; 744 break; 745 case VCHR: 746 ftype = S_IFCHR; 747 break; 748 case VLNK: 749 ftype = S_IFLNK; 750 break; 751 case VSOCK: 752 ftype = S_IFSOCK; 753 break; 754 case VFIFO: 755 ftype = S_IFIFO; 756 break; 757 case VNON: 758 case VBAD: 759 break; 760 } 761 762 return (ftype); 763 } 764 765 static int 766 ufs_filestat(kvm_t *kd, struct kinfo_file *kf, struct vnode *vp) 767 { 768 struct inode inode; 769 struct ufs1_dinode di1; 770 771 if (KREAD(kd, (u_long)VTOI(vp), &inode)) { 772 _kvm_err(kd, kd->program, "can't read inode at %p", VTOI(vp)); 773 return (-1); 774 } 775 776 if (KREAD(kd, (u_long)inode.i_din1, &di1)) { 777 _kvm_err(kd, kd->program, "can't read dinode at %p", 778 inode.i_din1); 779 return (-1); 780 } 781 782 inode.i_din1 = &di1; 783 784 kf->va_fsid = inode.i_dev & 0xffff; 785 kf->va_fileid = (long)inode.i_number; 786 kf->va_mode = inode.i_ffs1_mode; 787 kf->va_size = inode.i_ffs1_size; 788 kf->va_rdev = inode.i_ffs1_rdev; 789 kf->va_nlink = inode.i_ffs1_nlink; 790 791 return (0); 792 } 793 794 static int 795 ext2fs_filestat(kvm_t *kd, struct kinfo_file *kf, struct vnode *vp) 796 { 797 struct inode inode; 798 struct ext2fs_dinode e2di; 799 800 if (KREAD(kd, (u_long)VTOI(vp), &inode)) { 801 _kvm_err(kd, kd->program, "can't read inode at %p", VTOI(vp)); 802 return (-1); 803 } 804 805 if (KREAD(kd, (u_long)inode.i_e2din, &e2di)) { 806 _kvm_err(kd, kd->program, "can't read dinode at %p", 807 inode.i_e2din); 808 return (-1); 809 } 810 811 inode.i_e2din = &e2di; 812 813 kf->va_fsid = inode.i_dev & 0xffff; 814 kf->va_fileid = (long)inode.i_number; 815 kf->va_mode = inode.i_e2fs_mode; 816 kf->va_size = inode.i_e2fs_size; 817 kf->va_rdev = 0; /* XXX */ 818 kf->va_nlink = inode.i_e2fs_nlink; 819 820 return (0); 821 } 822 823 static int 824 msdos_filestat(kvm_t *kd, struct kinfo_file *kf, struct vnode *vp) 825 { 826 struct denode de; 827 struct msdosfsmount mp; 828 829 if (KREAD(kd, (u_long)VTODE(vp), &de)) { 830 _kvm_err(kd, kd->program, "can't read denode at %p", VTODE(vp)); 831 return (-1); 832 } 833 if (KREAD(kd, (u_long)de.de_pmp, &mp)) { 834 _kvm_err(kd, kd->program, "can't read mount struct at %p", 835 de.de_pmp); 836 return (-1); 837 } 838 839 kf->va_fsid = de.de_dev & 0xffff; 840 kf->va_fileid = 0; /* XXX see msdosfs_vptofh() for more info */ 841 kf->va_mode = (mp.pm_mask & 0777) | _kvm_getftype(vp->v_type); 842 kf->va_size = de.de_FileSize; 843 kf->va_rdev = 0; /* msdosfs doesn't support device files */ 844 kf->va_nlink = 1; 845 846 return (0); 847 } 848 849 static int 850 nfs_filestat(kvm_t *kd, struct kinfo_file *kf, struct vnode *vp) 851 { 852 struct nfsnode nfsnode; 853 854 if (KREAD(kd, (u_long)VTONFS(vp), &nfsnode)) { 855 _kvm_err(kd, kd->program, "can't read nfsnode at %p", 856 VTONFS(vp)); 857 return (-1); 858 } 859 kf->va_fsid = nfsnode.n_vattr.va_fsid; 860 kf->va_fileid = nfsnode.n_vattr.va_fileid; 861 kf->va_size = nfsnode.n_size; 862 kf->va_rdev = nfsnode.n_vattr.va_rdev; 863 kf->va_mode = (mode_t)nfsnode.n_vattr.va_mode | _kvm_getftype(vp->v_type); 864 kf->va_nlink = nfsnode.n_vattr.va_nlink; 865 866 return (0); 867 } 868 869 static int 870 spec_filestat(kvm_t *kd, struct kinfo_file *kf, struct vnode *vp) 871 { 872 struct specinfo specinfo; 873 struct vnode parent; 874 875 if (KREAD(kd, (u_long)vp->v_specinfo, &specinfo)) { 876 _kvm_err(kd, kd->program, "can't read specinfo at %p", 877 vp->v_specinfo); 878 return (-1); 879 } 880 881 vp->v_specinfo = &specinfo; 882 883 if (KREAD(kd, (u_long)vp->v_specparent, &parent)) { 884 _kvm_err(kd, kd->program, "can't read parent vnode at %p", 885 vp->v_specparent); 886 return (-1); 887 } 888 889 if (ufs_filestat(kd, kf, vp)) 890 return (-1); 891 892 return (0); 893 } 894 895 static int 896 filestat(kvm_t *kd, struct kinfo_file *kf, struct vnode *vp) 897 { 898 int ret = 0; 899 900 if (vp->v_type != VNON && vp->v_type != VBAD) { 901 switch (vp->v_tag) { 902 case VT_UFS: 903 case VT_MFS: 904 ret = ufs_filestat(kd, kf, vp); 905 break; 906 case VT_NFS: 907 ret = nfs_filestat(kd, kf, vp); 908 break; 909 case VT_EXT2FS: 910 ret = ext2fs_filestat(kd, kf, vp); 911 break; 912 case VT_ISOFS: 913 ret = _kvm_stat_cd9660(kd, kf, vp); 914 break; 915 case VT_MSDOSFS: 916 ret = msdos_filestat(kd, kf, vp); 917 break; 918 case VT_UDF: 919 ret = _kvm_stat_udf(kd, kf, vp); 920 break; 921 case VT_NTFS: 922 ret = _kvm_stat_ntfs(kd, kf, vp); 923 break; 924 case VT_NON: 925 if (vp->v_flag & VCLONE) 926 ret = spec_filestat(kd, kf, vp); 927 break; 928 default: 929 ret = -1; 930 break; 931 } 932 } 933 return (ret); 934 } 935