fstat.c revision 92920
1/*- 2 * Copyright (c) 1988, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34#ifndef lint 35static const char copyright[] = 36"@(#) Copyright (c) 1988, 1993\n\ 37 The Regents of the University of California. All rights reserved.\n"; 38#endif /* not lint */ 39 40#ifndef lint 41#if 0 42static char sccsid[] = "@(#)fstat.c 8.3 (Berkeley) 5/2/95"; 43#endif 44static const char rcsid[] = 45 "$FreeBSD: head/usr.bin/fstat/fstat.c 92920 2002-03-22 01:22:50Z imp $"; 46#endif /* not lint */ 47 48#include <sys/param.h> 49#include <sys/time.h> 50#include <sys/proc.h> 51#include <sys/user.h> 52#include <sys/stat.h> 53#include <sys/vnode.h> 54#include <sys/socket.h> 55#include <sys/socketvar.h> 56#include <sys/domain.h> 57#include <sys/protosw.h> 58#include <sys/un.h> 59#include <sys/unpcb.h> 60#include <sys/sysctl.h> 61#include <sys/filedesc.h> 62#include <sys/queue.h> 63#include <sys/pipe.h> 64#define _KERNEL 65#include <sys/conf.h> 66#include <sys/file.h> 67#include <ufs/ufs/quota.h> 68#include <ufs/ufs/inode.h> 69#include <fs/devfs/devfs.h> 70#include <sys/mount.h> 71#undef _KERNEL 72#include <nfs/nfsproto.h> 73#include <nfs/rpcv2.h> 74#include <nfsclient/nfs.h> 75#include <nfsclient/nfsnode.h> 76 77 78#include <vm/vm.h> 79#include <vm/vm_map.h> 80#include <vm/vm_object.h> 81 82#include <net/route.h> 83#include <netinet/in.h> 84#include <netinet/in_systm.h> 85#include <netinet/ip.h> 86#include <netinet/in_pcb.h> 87 88#include <ctype.h> 89#include <err.h> 90#include <fcntl.h> 91#include <kvm.h> 92#include <limits.h> 93#include <nlist.h> 94#include <paths.h> 95#include <pwd.h> 96#include <stdio.h> 97#include <stdlib.h> 98#include <string.h> 99#include <unistd.h> 100#include <netdb.h> 101 102#include "fstat.h" 103 104#define TEXT -1 105#define CDIR -2 106#define RDIR -3 107#define TRACE -4 108#define MMAP -5 109 110DEVS *devs; 111 112#ifdef notdef 113struct nlist nl[] = { 114 { "" }, 115}; 116#endif 117 118int fsflg, /* show files on same filesystem as file(s) argument */ 119 pflg, /* show files open by a particular pid */ 120 uflg; /* show files open by a particular (effective) user */ 121int checkfile; /* true if restricting to particular files or filesystems */ 122int nflg; /* (numerical) display f.s. and rdev as dev_t */ 123int vflg; /* display errors in locating kernel data objects etc... */ 124int mflg; /* include memory-mapped files */ 125 126 127struct file **ofiles; /* buffer of pointers to file structures */ 128int maxfiles; 129#define ALLOC_OFILES(d) \ 130 if ((d) > maxfiles) { \ 131 free(ofiles); \ 132 ofiles = malloc((d) * sizeof(struct file *)); \ 133 if (ofiles == NULL) { \ 134 err(1, NULL); \ 135 } \ 136 maxfiles = (d); \ 137 } 138 139kvm_t *kd; 140 141void dofiles(struct kinfo_proc *kp); 142void dommap(struct kinfo_proc *kp); 143void vtrans(struct vnode *vp, int i, int flag); 144int ufs_filestat(struct vnode *vp, struct filestat *fsp); 145int nfs_filestat(struct vnode *vp, struct filestat *fsp); 146int devfs_filestat(struct vnode *vp, struct filestat *fsp); 147char *getmnton(struct mount *m); 148void pipetrans(struct pipe *pi, int i, int flag); 149void socktrans(struct socket *sock, int i); 150void getinetproto(int number); 151int getfname(char *filename); 152void usage(void); 153 154 155int 156main(argc, argv) 157 int argc; 158 char **argv; 159{ 160 register struct passwd *passwd; 161 struct kinfo_proc *p, *plast; 162 int arg, ch, what; 163 char *memf, *nlistf; 164 char buf[_POSIX2_LINE_MAX]; 165 int cnt; 166 167 arg = 0; 168 what = KERN_PROC_ALL; 169 nlistf = memf = NULL; 170 while ((ch = getopt(argc, argv, "fmnp:u:vN:M:")) != -1) 171 switch((char)ch) { 172 case 'f': 173 fsflg = 1; 174 break; 175 case 'M': 176 memf = optarg; 177 break; 178 case 'N': 179 nlistf = optarg; 180 break; 181 case 'm': 182 mflg = 1; 183 break; 184 case 'n': 185 nflg = 1; 186 break; 187 case 'p': 188 if (pflg++) 189 usage(); 190 if (!isdigit(*optarg)) { 191 warnx("-p requires a process id"); 192 usage(); 193 } 194 what = KERN_PROC_PID; 195 arg = atoi(optarg); 196 break; 197 case 'u': 198 if (uflg++) 199 usage(); 200 if (!(passwd = getpwnam(optarg))) 201 errx(1, "%s: unknown uid", optarg); 202 what = KERN_PROC_UID; 203 arg = passwd->pw_uid; 204 break; 205 case 'v': 206 vflg = 1; 207 break; 208 case '?': 209 default: 210 usage(); 211 } 212 213 if (*(argv += optind)) { 214 for (; *argv; ++argv) { 215 if (getfname(*argv)) 216 checkfile = 1; 217 } 218 if (!checkfile) /* file(s) specified, but none accessable */ 219 exit(1); 220 } 221 222 ALLOC_OFILES(256); /* reserve space for file pointers */ 223 224 if (fsflg && !checkfile) { 225 /* -f with no files means use wd */ 226 if (getfname(".") == 0) 227 exit(1); 228 checkfile = 1; 229 } 230 231 /* 232 * Discard setgid privileges if not the running kernel so that bad 233 * guys can't print interesting stuff from kernel memory. 234 */ 235 if (nlistf != NULL || memf != NULL) 236 setgid(getgid()); 237 238 if ((kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, buf)) == NULL) 239 errx(1, "%s", buf); 240 setgid(getgid()); 241#ifdef notdef 242 if (kvm_nlist(kd, nl) != 0) 243 errx(1, "no namelist: %s", kvm_geterr(kd)); 244#endif 245 if ((p = kvm_getprocs(kd, what, arg, &cnt)) == NULL) 246 errx(1, "%s", kvm_geterr(kd)); 247 if (nflg) 248 printf("%s", 249"USER CMD PID FD DEV INUM MODE SZ|DV R/W"); 250 else 251 printf("%s", 252"USER CMD PID FD MOUNT INUM MODE SZ|DV R/W"); 253 if (checkfile && fsflg == 0) 254 printf(" NAME\n"); 255 else 256 putchar('\n'); 257 258 for (plast = &p[cnt]; p < plast; ++p) { 259 if (p->ki_stat == SZOMB) 260 continue; 261 dofiles(p); 262 if (mflg) 263 dommap(p); 264 } 265 exit(0); 266} 267 268char *Uname, *Comm; 269int Pid; 270 271#define PREFIX(i) printf("%-8.8s %-10s %5d", Uname, Comm, Pid); \ 272 switch(i) { \ 273 case TEXT: \ 274 printf(" text"); \ 275 break; \ 276 case CDIR: \ 277 printf(" wd"); \ 278 break; \ 279 case RDIR: \ 280 printf(" root"); \ 281 break; \ 282 case TRACE: \ 283 printf(" tr"); \ 284 break; \ 285 case MMAP: \ 286 printf(" mmap"); \ 287 break; \ 288 default: \ 289 printf(" %4d", i); \ 290 break; \ 291 } 292 293/* 294 * print open files attributed to this process 295 */ 296void 297dofiles(kp) 298 struct kinfo_proc *kp; 299{ 300 int i; 301 struct file file; 302 struct filedesc0 filed0; 303#define filed filed0.fd_fd 304 305 Uname = user_from_uid(kp->ki_uid, 0); 306 Pid = kp->ki_pid; 307 Comm = kp->ki_comm; 308 309 if (kp->ki_fd == NULL) 310 return; 311 if (!KVM_READ(kp->ki_fd, &filed0, sizeof (filed0))) { 312 dprintf(stderr, "can't read filedesc at %p for pid %d\n", 313 (void *)kp->ki_fd, Pid); 314 return; 315 } 316 /* 317 * root directory vnode, if one 318 */ 319 if (filed.fd_rdir) 320 vtrans(filed.fd_rdir, RDIR, FREAD); 321 /* 322 * current working directory vnode 323 */ 324 vtrans(filed.fd_cdir, CDIR, FREAD); 325 /* 326 * ktrace vnode, if one 327 */ 328 if (kp->ki_tracep) 329 vtrans(kp->ki_tracep, TRACE, FREAD|FWRITE); 330 /* 331 * text vnode, if one 332 */ 333 if (kp->ki_textvp) 334 vtrans(kp->ki_textvp, TEXT, FREAD); 335 /* 336 * open files 337 */ 338#define FPSIZE (sizeof (struct file *)) 339 ALLOC_OFILES(filed.fd_lastfile+1); 340 if (filed.fd_nfiles > NDFILE) { 341 if (!KVM_READ(filed.fd_ofiles, ofiles, 342 (filed.fd_lastfile+1) * FPSIZE)) { 343 dprintf(stderr, 344 "can't read file structures at %p for pid %d\n", 345 (void *)filed.fd_ofiles, Pid); 346 return; 347 } 348 } else 349 bcopy(filed0.fd_dfiles, ofiles, (filed.fd_lastfile+1) * FPSIZE); 350 for (i = 0; i <= filed.fd_lastfile; i++) { 351 if (ofiles[i] == NULL) 352 continue; 353 if (!KVM_READ(ofiles[i], &file, sizeof (struct file))) { 354 dprintf(stderr, "can't read file %d at %p for pid %d\n", 355 i, (void *)ofiles[i], Pid); 356 continue; 357 } 358 if (file.f_type == DTYPE_VNODE) 359 vtrans((struct vnode *)file.f_data, i, file.f_flag); 360 else if (file.f_type == DTYPE_SOCKET) { 361 if (checkfile == 0) 362 socktrans((struct socket *)file.f_data, i); 363 } 364#ifdef DTYPE_PIPE 365 else if (file.f_type == DTYPE_PIPE) { 366 if (checkfile == 0) 367 pipetrans((struct pipe *)file.f_data, i, 368 file.f_flag); 369 } 370#endif 371#ifdef DTYPE_FIFO 372 else if (file.f_type == DTYPE_FIFO) { 373 if (checkfile == 0) 374 vtrans((struct vnode *)file.f_data, i, 375 file.f_flag); 376 } 377#endif 378 else { 379 dprintf(stderr, 380 "unknown file type %d for file %d of pid %d\n", 381 file.f_type, i, Pid); 382 } 383 } 384} 385 386void 387dommap(kp) 388 struct kinfo_proc *kp; 389{ 390 vm_map_t map; 391 struct vmspace vmspace; 392 struct vm_map_entry entry; 393 vm_map_entry_t entryp; 394 struct vm_object object; 395 vm_object_t objp; 396 int prot, fflags; 397 398 if (!KVM_READ(kp->ki_vmspace, &vmspace, sizeof(vmspace))) { 399 dprintf(stderr, 400 "can't read vmspace at %p for pid %d\n", 401 (void *)kp->ki_vmspace, Pid); 402 return; 403 } 404 map = &vmspace.vm_map; 405 406 for (entryp = map->header.next; 407 entryp != &kp->ki_vmspace->vm_map.header; entryp = entry.next) { 408 if (!KVM_READ(entryp, &entry, sizeof(entry))) { 409 dprintf(stderr, 410 "can't read vm_map_entry at %p for pid %d\n", 411 (void *)entryp, Pid); 412 return; 413 } 414 415 if (entry.eflags & MAP_ENTRY_IS_SUB_MAP) 416 continue; 417 418 if ((objp = entry.object.vm_object) == NULL) 419 continue; 420 421 for (; objp; objp = object.backing_object) { 422 if (!KVM_READ(objp, &object, sizeof(object))) { 423 dprintf(stderr, 424 "can't read vm_object at %p for pid %d\n", 425 (void *)objp, Pid); 426 return; 427 } 428 } 429 430 prot = entry.protection; 431 fflags = (prot & VM_PROT_READ ? FREAD : 0) | 432 (prot & VM_PROT_WRITE ? FWRITE : 0); 433 434 switch (object.type) { 435 case OBJT_VNODE: 436 vtrans((struct vnode *)object.handle, MMAP, fflags); 437 break; 438 default: 439 break; 440 } 441 } 442} 443 444void 445vtrans(vp, i, flag) 446 struct vnode *vp; 447 int i; 448 int flag; 449{ 450 struct vnode vn; 451 struct filestat fst; 452 char rw[3], mode[15]; 453 char *badtype = NULL, *filename, *getmnton(); 454 455 filename = badtype = NULL; 456 if (!KVM_READ(vp, &vn, sizeof (struct vnode))) { 457 dprintf(stderr, "can't read vnode at %p for pid %d\n", 458 (void *)vp, Pid); 459 return; 460 } 461 if (vn.v_type == VNON || vn.v_tag == VT_NON) 462 badtype = "none"; 463 else if (vn.v_type == VBAD) 464 badtype = "bad"; 465 else 466 switch (vn.v_tag) { 467 case VT_UFS: 468 if (!ufs_filestat(&vn, &fst)) 469 badtype = "error"; 470 break; 471 472 case VT_DEVFS: 473 if (!devfs_filestat(&vn, &fst)) 474 badtype = "error"; 475 break; 476 477 case VT_NFS: 478 if (!nfs_filestat(&vn, &fst)) 479 badtype = "error"; 480 break; 481 482 case VT_MSDOSFS: 483 if (!msdosfs_filestat(&vn, &fst)) 484 badtype = "error"; 485 break; 486 487 case VT_ISOFS: 488 if (!isofs_filestat(&vn, &fst)) 489 badtype = "error"; 490 break; 491 492 default: { 493 static char unknown[10]; 494 sprintf(badtype = unknown, "?(%x)", vn.v_tag); 495 break;; 496 } 497 } 498 if (checkfile) { 499 int fsmatch = 0; 500 register DEVS *d; 501 502 if (badtype) 503 return; 504 for (d = devs; d != NULL; d = d->next) 505 if (d->fsid == fst.fsid) { 506 fsmatch = 1; 507 if (d->ino == fst.fileid) { 508 filename = d->name; 509 break; 510 } 511 } 512 if (fsmatch == 0 || (filename == NULL && fsflg == 0)) 513 return; 514 } 515 PREFIX(i); 516 if (badtype) { 517 (void)printf(" - - %10s -\n", badtype); 518 return; 519 } 520 if (nflg) 521 (void)printf(" %2d,%-2d", major(fst.fsid), minor(fst.fsid)); 522 else 523 (void)printf(" %-8s", getmnton(vn.v_mount)); 524 if (nflg) 525 (void)sprintf(mode, "%o", fst.mode); 526 else 527 strmode(fst.mode, mode); 528 (void)printf(" %6ld %10s", fst.fileid, mode); 529 switch (vn.v_type) { 530 case VBLK: 531 case VCHR: { 532 char *name; 533 534 if (nflg || ((name = devname(fst.rdev, vn.v_type == VCHR ? 535 S_IFCHR : S_IFBLK)) == NULL)) 536 printf(" %2d,%-2d", major(fst.rdev), minor(fst.rdev)); 537 else 538 printf(" %6s", name); 539 break; 540 } 541 default: 542 printf(" %6lu", fst.size); 543 } 544 rw[0] = '\0'; 545 if (flag & FREAD) 546 strcat(rw, "r"); 547 if (flag & FWRITE) 548 strcat(rw, "w"); 549 printf(" %2s", rw); 550 if (filename && !fsflg) 551 printf(" %s", filename); 552 putchar('\n'); 553} 554 555int 556ufs_filestat(vp, fsp) 557 struct vnode *vp; 558 struct filestat *fsp; 559{ 560 struct inode inode; 561 562 if (!KVM_READ(VTOI(vp), &inode, sizeof (inode))) { 563 dprintf(stderr, "can't read inode at %p for pid %d\n", 564 (void *)VTOI(vp), Pid); 565 return 0; 566 } 567 /* 568 * The st_dev from stat(2) is a udev_t. These kernel structures 569 * contain dev_t structures. We need to convert to udev to make 570 * comparisons 571 */ 572 fsp->fsid = dev2udev(inode.i_dev); 573 fsp->fileid = (long)inode.i_number; 574 fsp->mode = (mode_t)inode.i_mode; 575 fsp->size = (u_long)inode.i_size; 576 fsp->rdev = inode.i_rdev; 577 578 return 1; 579} 580 581int 582devfs_filestat(vp, fsp) 583 struct vnode *vp; 584 struct filestat *fsp; 585{ 586 struct devfs_dirent devfs_dirent; 587 struct mount mount; 588 struct vnode vnode; 589 590 if (!KVM_READ(vp->v_data, &devfs_dirent, sizeof (devfs_dirent))) { 591 dprintf(stderr, "can't read devfs_dirent at %p for pid %d\n", 592 (void *)vp->v_data, Pid); 593 return 0; 594 } 595 if (!KVM_READ(vp->v_mount, &mount, sizeof (mount))) { 596 dprintf(stderr, "can't read mount at %p for pid %d\n", 597 (void *)vp->v_mount, Pid); 598 return 0; 599 } 600 if (!KVM_READ(devfs_dirent.de_vnode, &vnode, sizeof (vnode))) { 601 dprintf(stderr, "can't read vnode at %p for pid %d\n", 602 (void *)devfs_dirent.de_vnode, Pid); 603 return 0; 604 } 605 fsp->fsid = (long)mount.mnt_stat.f_fsid.val[0]; 606 fsp->fileid = devfs_dirent.de_inode; 607 fsp->mode = (devfs_dirent.de_mode & ~S_IFMT) | S_IFCHR; 608 fsp->size = 0; 609 fsp->rdev = dev2udev((dev_t)vnode.v_rdev); 610 611 return 1; 612} 613 614int 615nfs_filestat(vp, fsp) 616 struct vnode *vp; 617 struct filestat *fsp; 618{ 619 struct nfsnode nfsnode; 620 register mode_t mode; 621 622 if (!KVM_READ(VTONFS(vp), &nfsnode, sizeof (nfsnode))) { 623 dprintf(stderr, "can't read nfsnode at %p for pid %d\n", 624 (void *)VTONFS(vp), Pid); 625 return 0; 626 } 627 fsp->fsid = nfsnode.n_vattr.va_fsid; 628 fsp->fileid = nfsnode.n_vattr.va_fileid; 629 fsp->size = nfsnode.n_size; 630 fsp->rdev = nfsnode.n_vattr.va_rdev; 631 mode = (mode_t)nfsnode.n_vattr.va_mode; 632 switch (vp->v_type) { 633 case VREG: 634 mode |= S_IFREG; 635 break; 636 case VDIR: 637 mode |= S_IFDIR; 638 break; 639 case VBLK: 640 mode |= S_IFBLK; 641 break; 642 case VCHR: 643 mode |= S_IFCHR; 644 break; 645 case VLNK: 646 mode |= S_IFLNK; 647 break; 648 case VSOCK: 649 mode |= S_IFSOCK; 650 break; 651 case VFIFO: 652 mode |= S_IFIFO; 653 break; 654 case VNON: 655 case VBAD: 656 return 0; 657 }; 658 fsp->mode = mode; 659 660 return 1; 661} 662 663 664char * 665getmnton(m) 666 struct mount *m; 667{ 668 static struct mount mount; 669 static struct mtab { 670 struct mtab *next; 671 struct mount *m; 672 char mntonname[MNAMELEN]; 673 } *mhead = NULL; 674 register struct mtab *mt; 675 676 for (mt = mhead; mt != NULL; mt = mt->next) 677 if (m == mt->m) 678 return (mt->mntonname); 679 if (!KVM_READ(m, &mount, sizeof(struct mount))) { 680 warnx("can't read mount table at %p", (void *)m); 681 return (NULL); 682 } 683 if ((mt = malloc(sizeof (struct mtab))) == NULL) 684 err(1, NULL); 685 mt->m = m; 686 bcopy(&mount.mnt_stat.f_mntonname[0], &mt->mntonname[0], MNAMELEN); 687 mt->next = mhead; 688 mhead = mt; 689 return (mt->mntonname); 690} 691 692void 693pipetrans(pi, i, flag) 694 struct pipe *pi; 695 int i; 696 int flag; 697{ 698 struct pipe pip; 699 char rw[3]; 700 701 PREFIX(i); 702 703 /* fill in socket */ 704 if (!KVM_READ(pi, &pip, sizeof(struct pipe))) { 705 dprintf(stderr, "can't read pipe at %p\n", (void *)pi); 706 goto bad; 707 } 708 709 printf("* pipe %8lx <-> %8lx", (u_long)pi, (u_long)pip.pipe_peer); 710 printf(" %6d", (int)pip.pipe_buffer.cnt); 711 rw[0] = '\0'; 712 if (flag & FREAD) 713 strcat(rw, "r"); 714 if (flag & FWRITE) 715 strcat(rw, "w"); 716 printf(" %2s", rw); 717 putchar('\n'); 718 return; 719 720bad: 721 printf("* error\n"); 722} 723 724void 725socktrans(sock, i) 726 struct socket *sock; 727 int i; 728{ 729 static char *stypename[] = { 730 "unused", /* 0 */ 731 "stream", /* 1 */ 732 "dgram", /* 2 */ 733 "raw", /* 3 */ 734 "rdm", /* 4 */ 735 "seqpak" /* 5 */ 736 }; 737#define STYPEMAX 5 738 struct socket so; 739 struct protosw proto; 740 struct domain dom; 741 struct inpcb inpcb; 742 struct unpcb unpcb; 743 int len; 744 char dname[32], *strcpy(); 745 746 PREFIX(i); 747 748 /* fill in socket */ 749 if (!KVM_READ(sock, &so, sizeof(struct socket))) { 750 dprintf(stderr, "can't read sock at %p\n", (void *)sock); 751 goto bad; 752 } 753 754 /* fill in protosw entry */ 755 if (!KVM_READ(so.so_proto, &proto, sizeof(struct protosw))) { 756 dprintf(stderr, "can't read protosw at %p", 757 (void *)so.so_proto); 758 goto bad; 759 } 760 761 /* fill in domain */ 762 if (!KVM_READ(proto.pr_domain, &dom, sizeof(struct domain))) { 763 dprintf(stderr, "can't read domain at %p\n", 764 (void *)proto.pr_domain); 765 goto bad; 766 } 767 768 if ((len = kvm_read(kd, (u_long)dom.dom_name, dname, 769 sizeof(dname) - 1)) < 0) { 770 dprintf(stderr, "can't read domain name at %p\n", 771 (void *)dom.dom_name); 772 dname[0] = '\0'; 773 } 774 else 775 dname[len] = '\0'; 776 777 if ((u_short)so.so_type > STYPEMAX) 778 printf("* %s ?%d", dname, so.so_type); 779 else 780 printf("* %s %s", dname, stypename[so.so_type]); 781 782 /* 783 * protocol specific formatting 784 * 785 * Try to find interesting things to print. For tcp, the interesting 786 * thing is the address of the tcpcb, for udp and others, just the 787 * inpcb (socket pcb). For unix domain, its the address of the socket 788 * pcb and the address of the connected pcb (if connected). Otherwise 789 * just print the protocol number and address of the socket itself. 790 * The idea is not to duplicate netstat, but to make available enough 791 * information for further analysis. 792 */ 793 switch(dom.dom_family) { 794 case AF_INET: 795 case AF_INET6: 796 getinetproto(proto.pr_protocol); 797 if (proto.pr_protocol == IPPROTO_TCP ) { 798 if (so.so_pcb) { 799 if (kvm_read(kd, (u_long)so.so_pcb, 800 (char *)&inpcb, sizeof(struct inpcb)) 801 != sizeof(struct inpcb)) { 802 dprintf(stderr, 803 "can't read inpcb at %p\n", 804 (void *)so.so_pcb); 805 goto bad; 806 } 807 printf(" %lx", (u_long)inpcb.inp_ppcb); 808 } 809 } 810 else if (so.so_pcb) 811 printf(" %lx", (u_long)so.so_pcb); 812 break; 813 case AF_UNIX: 814 /* print address of pcb and connected pcb */ 815 if (so.so_pcb) { 816 printf(" %lx", (u_long)so.so_pcb); 817 if (kvm_read(kd, (u_long)so.so_pcb, (char *)&unpcb, 818 sizeof(struct unpcb)) != sizeof(struct unpcb)){ 819 dprintf(stderr, "can't read unpcb at %p\n", 820 (void *)so.so_pcb); 821 goto bad; 822 } 823 if (unpcb.unp_conn) { 824 char shoconn[4], *cp; 825 826 cp = shoconn; 827 if (!(so.so_state & SS_CANTRCVMORE)) 828 *cp++ = '<'; 829 *cp++ = '-'; 830 if (!(so.so_state & SS_CANTSENDMORE)) 831 *cp++ = '>'; 832 *cp = '\0'; 833 printf(" %s %lx", shoconn, 834 (u_long)unpcb.unp_conn); 835 } 836 } 837 break; 838 default: 839 /* print protocol number and socket address */ 840 printf(" %d %lx", proto.pr_protocol, (u_long)sock); 841 } 842 printf("\n"); 843 return; 844bad: 845 printf("* error\n"); 846} 847 848 849/* 850 * Read the specinfo structure in the kernel (as pointed to by a dev_t) 851 * in order to work out the associated udev_t 852 */ 853udev_t 854dev2udev(dev) 855 dev_t dev; 856{ 857 struct specinfo si; 858 859 if (KVM_READ(dev, &si, sizeof si)) { 860 return si.si_udev; 861 } else { 862 dprintf(stderr, "can't convert dev_t %x to a udev_t\n", dev); 863 return -1; 864 } 865} 866 867/* 868 * getinetproto -- 869 * print name of protocol number 870 */ 871void 872getinetproto(number) 873 int number; 874{ 875 static int isopen; 876 register struct protoent *pe; 877 878 if (!isopen) 879 setprotoent(++isopen); 880 if ((pe = getprotobynumber(number)) != NULL) 881 printf(" %s", pe->p_name); 882 else 883 printf(" %d", number); 884} 885 886int 887getfname(filename) 888 char *filename; 889{ 890 struct stat statbuf; 891 DEVS *cur; 892 893 if (stat(filename, &statbuf)) { 894 warn("%s", filename); 895 return(0); 896 } 897 if ((cur = malloc(sizeof(DEVS))) == NULL) 898 err(1, NULL); 899 cur->next = devs; 900 devs = cur; 901 902 cur->ino = statbuf.st_ino; 903 cur->fsid = statbuf.st_dev; 904 cur->name = filename; 905 return(1); 906} 907 908void 909usage() 910{ 911 (void)fprintf(stderr, 912 "usage: fstat [-fmnv] [-p pid] [-u user] [-N system] [-M core] [file ...]\n"); 913 exit(1); 914} 915