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 35 static 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 42 static char sccsid[] = "@(#)fstat.c 8.3 (Berkeley) 5/2/95"; 43 #endif 44 #endif /* not lint */ 45 #include <sys/cdefs.h> 46 __FBSDID("$FreeBSD$"); 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 <sys/mount.h> 68 #include <ufs/ufs/quota.h> 69 #include <ufs/ufs/inode.h> 70 #include <fs/devfs/devfs.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 -5 109 110 DEVS *devs; 111 112 #ifdef notdef 113 struct nlist nl[] = { 114 { "" }, 115 }; 116 #endif 117 118 int 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 */ 121 int checkfile; /* true if restricting to particular files or filesystems */ 122 int nflg; /* (numerical) display f.s. and rdev as dev_t */ 123 int vflg; /* display errors in locating kernel data objects etc... */ 124 int mflg; /* include memory-mapped files */ 125 126 127 struct file **ofiles; /* buffer of pointers to file structures */ 128 int 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 } 138 139 char *memf, *nlistf; 140 kvm_t *kd; 141 142 static void fstat_kvm(int, int); 143 static void fstat_sysctl(int, int); 144 void dofiles(struct kinfo_proc *kp); 145 void dommap(struct kinfo_proc *kp); 146 void vtrans(struct vnode *vp, int i, int flag); 147 int ufs_filestat(struct vnode *vp, struct filestat *fsp); 148 int nfs_filestat(struct vnode *vp, struct filestat *fsp); 149 int devfs_filestat(struct vnode *vp, struct filestat *fsp); 150 char *getmnton(struct mount *m); 151 void pipetrans(struct pipe *pi, int i, int flag); 152 void socktrans(struct socket *sock, int i); 153 void getinetproto(int number); 154 int getfname(const char *filename); 155 void usage(void); 156 157 158 int 159 main(argc, argv) 160 int argc; 161 char **argv; 162 { 163 struct passwd *passwd; 164 int arg, ch, what; 165 166 arg = 0; 167 what = KERN_PROC_ALL; 168 nlistf = memf = NULL; 169 while ((ch = getopt(argc, argv, "fmnp:u:vN:M:")) != -1) 170 switch((char)ch) { 171 case 'f': 172 fsflg = 1; 173 break; 174 case 'M': 175 memf = optarg; 176 break; 177 case 'N': 178 nlistf = optarg; 179 break; 180 case 'm': 181 mflg = 1; 182 break; 183 case 'n': 184 nflg = 1; 185 break; 186 case 'p': 187 if (pflg++) 188 usage(); 189 if (!isdigit(*optarg)) { 190 warnx("-p requires a process id"); 191 usage(); 192 } 193 what = KERN_PROC_PID; 194 arg = atoi(optarg); 195 break; 196 case 'u': 197 if (uflg++) 198 usage(); 199 if (!(passwd = getpwnam(optarg))) 200 errx(1, "%s: unknown uid", optarg); 201 what = KERN_PROC_UID; 202 arg = passwd->pw_uid; 203 break; 204 case 'v': 205 vflg = 1; 206 break; 207 case '?': 208 default: 209 usage(); 210 } 211 212 if (*(argv += optind)) { 213 for (; *argv; ++argv) { 214 if (getfname(*argv)) 215 checkfile = 1; 216 } 217 if (!checkfile) /* file(s) specified, but none accessable */ 218 exit(1); 219 } 220 221 if (fsflg && !checkfile) { 222 /* -f with no files means use wd */ 223 if (getfname(".") == 0) 224 exit(1); 225 checkfile = 1; 226 } 227 228 if (memf != NULL) 229 fstat_kvm(what, arg); 230 else 231 fstat_sysctl(what, arg); 232 exit(0); 233 } 234 235 static void 236 print_header(void) 237 { 238 239 if (nflg) 240 printf("%s", 241 "USER CMD PID FD DEV INUM MODE SZ|DV R/W"); 242 else 243 printf("%s", 244 "USER CMD PID FD MOUNT INUM MODE SZ|DV R/W"); 245 if (checkfile && fsflg == 0) 246 printf(" NAME\n"); 247 else 248 putchar('\n'); 249 } 250 251 static void 252 fstat_kvm(int what, int arg) 253 { 254 struct kinfo_proc *p, *plast; 255 char buf[_POSIX2_LINE_MAX]; 256 int cnt; 257 258 ALLOC_OFILES(256); /* reserve space for file pointers */ 259 260 /* 261 * Discard setgid privileges if not the running kernel so that bad 262 * guys can't print interesting stuff from kernel memory. 263 */ 264 if (nlistf != NULL || memf != NULL) 265 setgid(getgid()); 266 267 if ((kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, buf)) == NULL) 268 errx(1, "%s", buf); 269 setgid(getgid()); 270 #ifdef notdef 271 if (kvm_nlist(kd, nl) != 0) 272 errx(1, "no namelist: %s", kvm_geterr(kd)); 273 #endif 274 if ((p = kvm_getprocs(kd, what, arg, &cnt)) == NULL) 275 errx(1, "%s", kvm_geterr(kd)); 276 for (plast = &p[cnt]; p < plast; ++p) { 277 if (p->ki_stat == SZOMB) 278 continue; 279 dofiles(p); 280 if (mflg) 281 dommap(p); 282 } 283 } 284 285 static void 286 fstat_sysctl(int what, int arg) 287 { 288 289 /* not yet implemented */ 290 fstat_kvm(what, arg); 291 } 292 293 const char *Uname, *Comm; 294 int Pid; 295 296 #define PREFIX(i) printf("%-8.8s %-10s %5d", Uname, Comm, Pid); \ 297 switch(i) { \ 298 case TEXT: \ 299 printf(" text"); \ 300 break; \ 301 case CDIR: \ 302 printf(" wd"); \ 303 break; \ 304 case RDIR: \ 305 printf(" root"); \ 306 break; \ 307 case TRACE: \ 308 printf(" tr"); \ 309 break; \ 310 case MMAP: \ 311 printf(" mmap"); \ 312 break; \ 313 default: \ 314 printf(" %4d", i); \ 315 break; \ 316 } 317 318 /* 319 * print open files attributed to this process 320 */ 321 void 322 dofiles(kp) 323 struct kinfo_proc *kp; 324 { 325 int i; 326 struct file file; 327 struct filedesc0 filed0; 328 #define filed filed0.fd_fd 329 330 Uname = user_from_uid(kp->ki_uid, 0); 331 Pid = kp->ki_pid; 332 Comm = kp->ki_comm; 333 334 if (kp->ki_fd == NULL) 335 return; 336 if (!KVM_READ(kp->ki_fd, &filed0, sizeof (filed0))) { 337 dprintf(stderr, "can't read filedesc at %p for pid %d\n", 338 (void *)kp->ki_fd, Pid); 339 return; 340 } 341 /* 342 * root directory vnode, if one 343 */ 344 if (filed.fd_rdir) 345 vtrans(filed.fd_rdir, RDIR, FREAD); 346 /* 347 * current working directory vnode 348 */ 349 vtrans(filed.fd_cdir, CDIR, FREAD); 350 /* 351 * ktrace vnode, if one 352 */ 353 if (kp->ki_tracep) 354 vtrans(kp->ki_tracep, TRACE, FREAD|FWRITE); 355 /* 356 * text vnode, if one 357 */ 358 if (kp->ki_textvp) 359 vtrans(kp->ki_textvp, TEXT, FREAD); 360 /* 361 * open files 362 */ 363 #define FPSIZE (sizeof (struct file *)) 364 ALLOC_OFILES(filed.fd_lastfile+1); 365 if (filed.fd_nfiles > NDFILE) { 366 if (!KVM_READ(filed.fd_ofiles, ofiles, 367 (filed.fd_lastfile+1) * FPSIZE)) { 368 dprintf(stderr, 369 "can't read file structures at %p for pid %d\n", 370 (void *)filed.fd_ofiles, Pid); 371 return; 372 } 373 } else 374 bcopy(filed0.fd_dfiles, ofiles, (filed.fd_lastfile+1) * FPSIZE); 375 for (i = 0; i <= filed.fd_lastfile; i++) { 376 if (ofiles[i] == NULL) 377 continue; 378 if (!KVM_READ(ofiles[i], &file, sizeof (struct file))) { 379 dprintf(stderr, "can't read file %d at %p for pid %d\n", 380 i, (void *)ofiles[i], Pid); 381 continue; 382 } 383 if (file.f_type == DTYPE_VNODE) 384 vtrans((struct vnode *)file.f_data, i, file.f_flag); 385 else if (file.f_type == DTYPE_SOCKET) { 386 if (checkfile == 0) 387 socktrans((struct socket *)file.f_data, i); 388 } 389 #ifdef DTYPE_PIPE 390 else if (file.f_type == DTYPE_PIPE) { 391 if (checkfile == 0) 392 pipetrans((struct pipe *)file.f_data, i, 393 file.f_flag); 394 } 395 #endif 396 #ifdef DTYPE_FIFO 397 else if (file.f_type == DTYPE_FIFO) { 398 if (checkfile == 0) 399 vtrans((struct vnode *)file.f_data, i, 400 file.f_flag); 401 } 402 #endif 403 else { 404 dprintf(stderr, 405 "unknown file type %d for file %d of pid %d\n", 406 file.f_type, i, Pid); 407 } 408 } 409 } 410 411 void 412 dommap(kp) 413 struct kinfo_proc *kp; 414 { 415 vm_map_t map; 416 struct vmspace vmspace; 417 struct vm_map_entry entry; 418 vm_map_entry_t entryp; 419 struct vm_object object; 420 vm_object_t objp; 421 int prot, fflags; 422 423 if (!KVM_READ(kp->ki_vmspace, &vmspace, sizeof(vmspace))) { 424 dprintf(stderr, 425 "can't read vmspace at %p for pid %d\n", 426 (void *)kp->ki_vmspace, Pid); 427 return; 428 } 429 map = &vmspace.vm_map; 430 431 for (entryp = map->header.next; 432 entryp != &kp->ki_vmspace->vm_map.header; entryp = entry.next) { 433 if (!KVM_READ(entryp, &entry, sizeof(entry))) { 434 dprintf(stderr, 435 "can't read vm_map_entry at %p for pid %d\n", 436 (void *)entryp, Pid); 437 return; 438 } 439 440 if (entry.eflags & MAP_ENTRY_IS_SUB_MAP) 441 continue; 442 443 if ((objp = entry.object.vm_object) == NULL) 444 continue; 445 446 for (; objp; objp = object.backing_object) { 447 if (!KVM_READ(objp, &object, sizeof(object))) { 448 dprintf(stderr, 449 "can't read vm_object at %p for pid %d\n", 450 (void *)objp, Pid); 451 return; 452 } 453 } 454 455 prot = entry.protection; 456 fflags = (prot & VM_PROT_READ ? FREAD : 0) | 457 (prot & VM_PROT_WRITE ? FWRITE : 0); 458 459 switch (object.type) { 460 case OBJT_VNODE: 461 vtrans((struct vnode *)object.handle, MMAP, fflags); 462 break; 463 default: 464 break; 465 } 466 } 467 } 468 469 void 470 vtrans(vp, i, flag) 471 struct vnode *vp; 472 int i; 473 int flag; 474 { 475 struct vnode vn; 476 struct filestat fst; 477 char rw[3], mode[15], tagstr[12], *tagptr; 478 const char *badtype, *filename; 479 480 filename = badtype = NULL; 481 if (!KVM_READ(vp, &vn, sizeof (struct vnode))) { 482 dprintf(stderr, "can't read vnode at %p for pid %d\n", 483 (void *)vp, Pid); 484 return; 485 } 486 if (!KVM_READ(&vp->v_tag, &tagptr, sizeof tagptr) || 487 !KVM_READ(tagptr, tagstr, sizeof tagstr)) { 488 dprintf(stderr, "can't read v_tag at %p for pid %d\n", 489 (void *)vp, Pid); 490 return; 491 } 492 tagstr[sizeof(tagstr) - 1] = '\0'; 493 if (vn.v_type == VNON) 494 badtype = "none"; 495 else if (vn.v_type == VBAD) 496 badtype = "bad"; 497 else { 498 if (!strcmp("ufs", tagstr)) { 499 if (!ufs_filestat(&vn, &fst)) 500 badtype = "error"; 501 } else if (!strcmp("devfs", tagstr)) { 502 if (!devfs_filestat(&vn, &fst)) 503 badtype = "error"; 504 } else if (!strcmp("nfs", tagstr)) { 505 if (!nfs_filestat(&vn, &fst)) 506 badtype = "error"; 507 } else if (!strcmp("msdosfs", tagstr)) { 508 if (!msdosfs_filestat(&vn, &fst)) 509 badtype = "error"; 510 } else if (!strcmp("isofs", tagstr)) { 511 if (!isofs_filestat(&vn, &fst)) 512 badtype = "error"; 513 } else { 514 static char unknown[32]; 515 snprintf(unknown, sizeof unknown, "?(%s)", tagstr); 516 badtype = unknown; 517 } 518 } 519 if (checkfile) { 520 int fsmatch = 0; 521 DEVS *d; 522 523 if (badtype) 524 return; 525 for (d = devs; d != NULL; d = d->next) 526 if (d->fsid == fst.fsid) { 527 fsmatch = 1; 528 if (d->ino == fst.fileid) { 529 filename = d->name; 530 break; 531 } 532 } 533 if (fsmatch == 0 || (filename == NULL && fsflg == 0)) 534 return; 535 } 536 PREFIX(i); 537 if (badtype) { 538 (void)printf(" - - %10s -\n", badtype); 539 return; 540 } 541 if (nflg) 542 (void)printf(" %2d,%-2d", major(fst.fsid), minor(fst.fsid)); 543 else 544 (void)printf(" %-8s", getmnton(vn.v_mount)); 545 if (nflg) 546 (void)sprintf(mode, "%o", fst.mode); 547 else 548 strmode(fst.mode, mode); 549 (void)printf(" %6ld %10s", fst.fileid, mode); 550 switch (vn.v_type) { 551 case VBLK: 552 case VCHR: { 553 char *name; 554 555 if (nflg || ((name = devname(fst.rdev, vn.v_type == VCHR ? 556 S_IFCHR : S_IFBLK)) == NULL)) 557 printf(" %2d,%-2d", major(fst.rdev), minor(fst.rdev)); 558 else 559 printf(" %6s", name); 560 break; 561 } 562 default: 563 printf(" %6lu", fst.size); 564 } 565 rw[0] = '\0'; 566 if (flag & FREAD) 567 strcat(rw, "r"); 568 if (flag & FWRITE) 569 strcat(rw, "w"); 570 printf(" %2s", rw); 571 if (filename && !fsflg) 572 printf(" %s", filename); 573 putchar('\n'); 574 } 575 576 int 577 ufs_filestat(vp, fsp) 578 struct vnode *vp; 579 struct filestat *fsp; 580 { 581 struct inode inode; 582 583 if (!KVM_READ(VTOI(vp), &inode, sizeof (inode))) { 584 dprintf(stderr, "can't read inode at %p for pid %d\n", 585 (void *)VTOI(vp), Pid); 586 return 0; 587 } 588 /* 589 * The st_dev from stat(2) is a udev_t. These kernel structures 590 * contain dev_t structures. We need to convert to udev to make 591 * comparisons 592 */ 593 fsp->fsid = dev2udev(inode.i_dev); 594 fsp->fileid = (long)inode.i_number; 595 fsp->mode = (mode_t)inode.i_mode; 596 fsp->size = (u_long)inode.i_size; 597 #if should_be_but_is_hard 598 fsp->rdev = inode.i_rdev; 599 #else 600 fsp->rdev = 0; 601 #endif 602 603 return 1; 604 } 605 606 int 607 devfs_filestat(vp, fsp) 608 struct vnode *vp; 609 struct filestat *fsp; 610 { 611 struct devfs_dirent devfs_dirent; 612 struct mount mount; 613 struct vnode vnode; 614 615 if (!KVM_READ(vp->v_data, &devfs_dirent, sizeof (devfs_dirent))) { 616 dprintf(stderr, "can't read devfs_dirent at %p for pid %d\n", 617 (void *)vp->v_data, Pid); 618 return 0; 619 } 620 if (!KVM_READ(vp->v_mount, &mount, sizeof (mount))) { 621 dprintf(stderr, "can't read mount at %p for pid %d\n", 622 (void *)vp->v_mount, Pid); 623 return 0; 624 } 625 if (!KVM_READ(devfs_dirent.de_vnode, &vnode, sizeof (vnode))) { 626 dprintf(stderr, "can't read vnode at %p for pid %d\n", 627 (void *)devfs_dirent.de_vnode, Pid); 628 return 0; 629 } 630 fsp->fsid = (long)mount.mnt_stat.f_fsid.val[0]; 631 fsp->fileid = devfs_dirent.de_inode; 632 fsp->mode = (devfs_dirent.de_mode & ~S_IFMT) | S_IFCHR; 633 fsp->size = 0; 634 fsp->rdev = dev2udev((dev_t)vnode.v_rdev); 635 636 return 1; 637 } 638 639 int 640 nfs_filestat(vp, fsp) 641 struct vnode *vp; 642 struct filestat *fsp; 643 { 644 struct nfsnode nfsnode; 645 mode_t mode; 646 647 if (!KVM_READ(VTONFS(vp), &nfsnode, sizeof (nfsnode))) { 648 dprintf(stderr, "can't read nfsnode at %p for pid %d\n", 649 (void *)VTONFS(vp), Pid); 650 return 0; 651 } 652 fsp->fsid = nfsnode.n_vattr.va_fsid; 653 fsp->fileid = nfsnode.n_vattr.va_fileid; 654 fsp->size = nfsnode.n_size; 655 fsp->rdev = nfsnode.n_vattr.va_rdev; 656 mode = (mode_t)nfsnode.n_vattr.va_mode; 657 switch (vp->v_type) { 658 case VREG: 659 mode |= S_IFREG; 660 break; 661 case VDIR: 662 mode |= S_IFDIR; 663 break; 664 case VBLK: 665 mode |= S_IFBLK; 666 break; 667 case VCHR: 668 mode |= S_IFCHR; 669 break; 670 case VLNK: 671 mode |= S_IFLNK; 672 break; 673 case VSOCK: 674 mode |= S_IFSOCK; 675 break; 676 case VFIFO: 677 mode |= S_IFIFO; 678 break; 679 case VNON: 680 case VBAD: 681 return 0; 682 }; 683 fsp->mode = mode; 684 685 return 1; 686 } 687 688 689 char * 690 getmnton(m) 691 struct mount *m; 692 { 693 static struct mount mount; 694 static struct mtab { 695 struct mtab *next; 696 struct mount *m; 697 char mntonname[MNAMELEN]; 698 } *mhead = NULL; 699 struct mtab *mt; 700 701 for (mt = mhead; mt != NULL; mt = mt->next) 702 if (m == mt->m) 703 return (mt->mntonname); 704 if (!KVM_READ(m, &mount, sizeof(struct mount))) { 705 warnx("can't read mount table at %p", (void *)m); 706 return (NULL); 707 } 708 if ((mt = malloc(sizeof (struct mtab))) == NULL) 709 err(1, NULL); 710 mt->m = m; 711 bcopy(&mount.mnt_stat.f_mntonname[0], &mt->mntonname[0], MNAMELEN); 712 mt->next = mhead; 713 mhead = mt; 714 return (mt->mntonname); 715 } 716 717 void 718 pipetrans(pi, i, flag) 719 struct pipe *pi; 720 int i; 721 int flag; 722 { 723 struct pipe pip; 724 char rw[3]; 725 726 PREFIX(i); 727 728 /* fill in socket */ 729 if (!KVM_READ(pi, &pip, sizeof(struct pipe))) { 730 dprintf(stderr, "can't read pipe at %p\n", (void *)pi); 731 goto bad; 732 } 733 734 printf("* pipe %8lx <-> %8lx", (u_long)pi, (u_long)pip.pipe_peer); 735 printf(" %6d", (int)pip.pipe_buffer.cnt); 736 rw[0] = '\0'; 737 if (flag & FREAD) 738 strcat(rw, "r"); 739 if (flag & FWRITE) 740 strcat(rw, "w"); 741 printf(" %2s", rw); 742 putchar('\n'); 743 return; 744 745 bad: 746 printf("* error\n"); 747 } 748 749 void 750 socktrans(sock, i) 751 struct socket *sock; 752 int i; 753 { 754 static const char *stypename[] = { 755 "unused", /* 0 */ 756 "stream", /* 1 */ 757 "dgram", /* 2 */ 758 "raw", /* 3 */ 759 "rdm", /* 4 */ 760 "seqpak" /* 5 */ 761 }; 762 #define STYPEMAX 5 763 struct socket so; 764 struct protosw proto; 765 struct domain dom; 766 struct inpcb inpcb; 767 struct unpcb unpcb; 768 int len; 769 char dname[32]; 770 771 PREFIX(i); 772 773 /* fill in socket */ 774 if (!KVM_READ(sock, &so, sizeof(struct socket))) { 775 dprintf(stderr, "can't read sock at %p\n", (void *)sock); 776 goto bad; 777 } 778 779 /* fill in protosw entry */ 780 if (!KVM_READ(so.so_proto, &proto, sizeof(struct protosw))) { 781 dprintf(stderr, "can't read protosw at %p", 782 (void *)so.so_proto); 783 goto bad; 784 } 785 786 /* fill in domain */ 787 if (!KVM_READ(proto.pr_domain, &dom, sizeof(struct domain))) { 788 dprintf(stderr, "can't read domain at %p\n", 789 (void *)proto.pr_domain); 790 goto bad; 791 } 792 793 if ((len = kvm_read(kd, (u_long)dom.dom_name, dname, 794 sizeof(dname) - 1)) < 0) { 795 dprintf(stderr, "can't read domain name at %p\n", 796 (void *)dom.dom_name); 797 dname[0] = '\0'; 798 } 799 else 800 dname[len] = '\0'; 801 802 if ((u_short)so.so_type > STYPEMAX) 803 printf("* %s ?%d", dname, so.so_type); 804 else 805 printf("* %s %s", dname, stypename[so.so_type]); 806 807 /* 808 * protocol specific formatting 809 * 810 * Try to find interesting things to print. For tcp, the interesting 811 * thing is the address of the tcpcb, for udp and others, just the 812 * inpcb (socket pcb). For unix domain, its the address of the socket 813 * pcb and the address of the connected pcb (if connected). Otherwise 814 * just print the protocol number and address of the socket itself. 815 * The idea is not to duplicate netstat, but to make available enough 816 * information for further analysis. 817 */ 818 switch(dom.dom_family) { 819 case AF_INET: 820 case AF_INET6: 821 getinetproto(proto.pr_protocol); 822 if (proto.pr_protocol == IPPROTO_TCP ) { 823 if (so.so_pcb) { 824 if (kvm_read(kd, (u_long)so.so_pcb, 825 (char *)&inpcb, sizeof(struct inpcb)) 826 != sizeof(struct inpcb)) { 827 dprintf(stderr, 828 "can't read inpcb at %p\n", 829 (void *)so.so_pcb); 830 goto bad; 831 } 832 printf(" %lx", (u_long)inpcb.inp_ppcb); 833 } 834 } 835 else if (so.so_pcb) 836 printf(" %lx", (u_long)so.so_pcb); 837 break; 838 case AF_UNIX: 839 /* print address of pcb and connected pcb */ 840 if (so.so_pcb) { 841 printf(" %lx", (u_long)so.so_pcb); 842 if (kvm_read(kd, (u_long)so.so_pcb, (char *)&unpcb, 843 sizeof(struct unpcb)) != sizeof(struct unpcb)){ 844 dprintf(stderr, "can't read unpcb at %p\n", 845 (void *)so.so_pcb); 846 goto bad; 847 } 848 if (unpcb.unp_conn) { 849 char shoconn[4], *cp; 850 851 cp = shoconn; 852 if (!(so.so_state & SS_CANTRCVMORE)) 853 *cp++ = '<'; 854 *cp++ = '-'; 855 if (!(so.so_state & SS_CANTSENDMORE)) 856 *cp++ = '>'; 857 *cp = '\0'; 858 printf(" %s %lx", shoconn, 859 (u_long)unpcb.unp_conn); 860 } 861 } 862 break; 863 default: 864 /* print protocol number and socket address */ 865 printf(" %d %lx", proto.pr_protocol, (u_long)sock); 866 } 867 printf("\n"); 868 return; 869 bad: 870 printf("* error\n"); 871 } 872 873 874 /* 875 * Read the cdev structure in the kernel (as pointed to by a dev_t) 876 * in order to work out the associated udev_t 877 */ 878 udev_t 879 dev2udev(dev) 880 dev_t dev; 881 { 882 struct cdev si; 883 884 if (KVM_READ(dev, &si, sizeof si)) { 885 return si.si_udev; 886 } else { 887 dprintf(stderr, "can't convert dev_t %x to a udev_t\n", dev); 888 return -1; 889 } 890 } 891 892 /* 893 * getinetproto -- 894 * print name of protocol number 895 */ 896 void 897 getinetproto(number) 898 int number; 899 { 900 static int isopen; 901 struct protoent *pe; 902 903 if (!isopen) 904 setprotoent(++isopen); 905 if ((pe = getprotobynumber(number)) != NULL) 906 printf(" %s", pe->p_name); 907 else 908 printf(" %d", number); 909 } 910 911 int 912 getfname(filename) 913 const char *filename; 914 { 915 struct stat statbuf; 916 DEVS *cur; 917 918 if (stat(filename, &statbuf)) { 919 warn("%s", filename); 920 return(0); 921 } 922 if ((cur = malloc(sizeof(DEVS))) == NULL) 923 err(1, NULL); 924 cur->next = devs; 925 devs = cur; 926 927 cur->ino = statbuf.st_ino; 928 cur->fsid = statbuf.st_dev; 929 cur->name = filename; 930 return(1); 931 } 932 933 void 934 usage() 935 { 936 (void)fprintf(stderr, 937 "usage: fstat [-fmnv] [-p pid] [-u user] [-N system] [-M core] [file ...]\n"); 938 exit(1); 939 } 940