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 * @(#) Copyright (c) 1988, 1993 The Regents of the University of California. All rights reserved. 34 * @(#)fstat.c 8.3 (Berkeley) 5/2/95 35 * $FreeBSD: src/usr.bin/fstat/fstat.c,v 1.21.2.7 2001/11/21 10:49:37 dwmalone Exp $ 36 * $DragonFly: src/usr.bin/fstat/fstat.c,v 1.10 2005/01/31 18:05:09 dillon Exp $ 37 */ 38 39 #define _KERNEL_STRUCTURES 40 41 #include <sys/param.h> 42 #include <sys/time.h> 43 #include <sys/user.h> 44 #include <sys/stat.h> 45 #include <sys/vnode.h> 46 #include <sys/socket.h> 47 #include <sys/socketvar.h> 48 #include <sys/domain.h> 49 #include <sys/protosw.h> 50 #include <sys/un.h> 51 #include <sys/unpcb.h> 52 #include <sys/sysctl.h> 53 #include <sys/filedesc.h> 54 #include <sys/queue.h> 55 #include <sys/pipe.h> 56 #include <sys/conf.h> 57 #include <sys/file.h> 58 #include <vfs/ufs/quota.h> 59 #include <vfs/ufs/inode.h> 60 #include <sys/mount.h> 61 #include <sys/namecache.h> 62 #include <nfs/nfsproto.h> 63 #include <nfs/rpcv2.h> 64 #include <nfs/nfs.h> 65 #include <nfs/nfsnode.h> 66 67 68 #include <vm/vm.h> 69 #include <vm/vm_map.h> 70 #include <vm/vm_object.h> 71 72 #include <net/route.h> 73 #include <netinet/in.h> 74 #include <netinet/in_systm.h> 75 #include <netinet/ip.h> 76 #include <netinet/in_pcb.h> 77 78 #include <ctype.h> 79 #include <err.h> 80 #include <fcntl.h> 81 #include <kvm.h> 82 #include <limits.h> 83 #include <nlist.h> 84 #include <paths.h> 85 #include <pwd.h> 86 #include <stdio.h> 87 #include <stdlib.h> 88 #include <string.h> 89 #include <unistd.h> 90 #include <netdb.h> 91 92 #include "fstat.h" 93 94 #define TEXT -1 95 #define CDIR -2 96 #define RDIR -3 97 #define TRACE -4 98 #define MMAP -5 99 100 DEVS *devs; 101 102 #ifdef notdef 103 struct nlist nl[] = { 104 { "" }, 105 }; 106 #endif 107 108 int fsflg, /* show files on same filesystem as file(s) argument */ 109 pflg, /* show files open by a particular pid */ 110 uflg; /* show files open by a particular (effective) user */ 111 int checkfile; /* true if restricting to particular files or filesystems */ 112 int nflg; /* (numerical) display f.s. and rdev as dev_t */ 113 int vflg; /* display errors in locating kernel data objects etc... */ 114 int mflg; /* include memory-mapped files */ 115 int wflg_mnt = 16; 116 int wflg_cmd = 10; 117 int pid_width = 5; 118 int ino_width = 6; 119 120 121 struct file **ofiles; /* buffer of pointers to file structures */ 122 int maxfiles; 123 #define ALLOC_OFILES(d) \ 124 if ((d) > maxfiles) { \ 125 free(ofiles); \ 126 ofiles = malloc((d) * sizeof(struct file *)); \ 127 if (ofiles == NULL) { \ 128 err(1, NULL); \ 129 } \ 130 maxfiles = (d); \ 131 } 132 133 kvm_t *kd; 134 135 void dofiles(struct kinfo_proc *kp); 136 void dommap(struct kinfo_proc *kp); 137 void vtrans(struct vnode *vp, struct namecache *ncp, int i, int flag); 138 int ufs_filestat(struct vnode *vp, struct filestat *fsp); 139 int nfs_filestat(struct vnode *vp, struct filestat *fsp); 140 char *getmnton(struct mount *m, struct namecache_list *ncplist, struct namecache *ncp); 141 void pipetrans(struct pipe *pi, int i, int flag); 142 void socktrans(struct socket *sock, int i); 143 void getinetproto(int number); 144 int getfname(char *filename); 145 void usage(void); 146 147 148 int 149 main(int argc, char **argv) 150 { 151 register struct passwd *passwd; 152 struct kinfo_proc *p, *plast; 153 int arg, ch, what; 154 char *memf, *nlistf; 155 char buf[_POSIX2_LINE_MAX]; 156 int cnt; 157 158 arg = 0; 159 what = KERN_PROC_ALL; 160 nlistf = memf = NULL; 161 while ((ch = getopt(argc, argv, "fmnp:u:vwN:M:")) != -1) 162 switch((char)ch) { 163 case 'f': 164 fsflg = 1; 165 break; 166 case 'M': 167 memf = optarg; 168 break; 169 case 'N': 170 nlistf = optarg; 171 break; 172 case 'm': 173 mflg = 1; 174 break; 175 case 'n': 176 nflg = 1; 177 break; 178 case 'p': 179 if (pflg++) 180 usage(); 181 if (!isdigit(*optarg)) { 182 warnx("-p requires a process id"); 183 usage(); 184 } 185 what = KERN_PROC_PID; 186 arg = atoi(optarg); 187 break; 188 case 'u': 189 if (uflg++) 190 usage(); 191 if (!(passwd = getpwnam(optarg))) 192 errx(1, "%s: unknown uid", optarg); 193 what = KERN_PROC_UID; 194 arg = passwd->pw_uid; 195 break; 196 case 'v': 197 vflg = 1; 198 break; 199 case 'w': 200 wflg_mnt = 40; 201 wflg_cmd = 16; 202 break; 203 case '?': 204 default: 205 usage(); 206 } 207 208 if (*(argv += optind)) { 209 for (; *argv; ++argv) { 210 if (getfname(*argv)) 211 checkfile = 1; 212 } 213 if (!checkfile) /* file(s) specified, but none accessable */ 214 exit(1); 215 } 216 217 ALLOC_OFILES(256); /* reserve space for file pointers */ 218 219 if (fsflg && !checkfile) { 220 /* -f with no files means use wd */ 221 if (getfname(".") == 0) 222 exit(1); 223 checkfile = 1; 224 } 225 226 /* 227 * Discard setgid privileges if not the running kernel so that bad 228 * guys can't print interesting stuff from kernel memory. 229 */ 230 if (nlistf != NULL || memf != NULL) 231 setgid(getgid()); 232 233 if ((kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, buf)) == NULL) 234 errx(1, "%s", buf); 235 #ifdef notdef 236 if (kvm_nlist(kd, nl) != 0) 237 errx(1, "no namelist: %s", kvm_geterr(kd)); 238 #endif 239 if ((p = kvm_getprocs(kd, what, arg, &cnt)) == NULL) 240 errx(1, "%s", kvm_geterr(kd)); 241 if (nflg) 242 printf("USER %-*.*s %*.*s FD DEV %*.*s MODE SZ|DV R/W", 243 wflg_cmd, wflg_cmd, "CMD", 244 pid_width, pid_width, "PID", 245 ino_width, ino_width, "INUM"); 246 else 247 printf("USER %-*.*s %*.*s FD %-*.*s %*.*s MODE SZ|DV R/W", 248 wflg_cmd, wflg_cmd, "CMD", 249 pid_width, pid_width, "PID", 250 wflg_mnt, wflg_mnt, "PATH", 251 ino_width, ino_width, "INUM"); 252 if (checkfile && fsflg == 0) 253 printf(" NAME\n"); 254 else 255 putchar('\n'); 256 257 for (plast = &p[cnt]; p < plast; ++p) { 258 if (p->kp_proc.p_stat == SZOMB) 259 continue; 260 dofiles(p); 261 if (mflg) 262 dommap(p); 263 } 264 exit(0); 265 } 266 267 char *Uname, *Comm; 268 int Pid; 269 270 #define PREFIX(i) \ 271 printf("%-8.8s %-*s %*d", Uname, wflg_cmd, Comm, pid_width, 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 */ 296 void 297 dofiles(struct kinfo_proc *kp) 298 { 299 int i; 300 struct file file; 301 struct filedesc0 filed0; 302 #define filed filed0.fd_fd 303 struct proc *p = &kp->kp_proc; 304 struct eproc *ep = &kp->kp_eproc; 305 306 Uname = user_from_uid(ep->e_ucred.cr_uid, 0); 307 Pid = p->p_pid; 308 Comm = kp->kp_thread.td_comm; 309 310 if (p->p_fd == NULL) 311 return; 312 if (!KVM_READ(p->p_fd, &filed0, sizeof (filed0))) { 313 dprintf(stderr, "can't read filedesc at %p for pid %d\n", 314 (void *)p->p_fd, Pid); 315 return; 316 } 317 /* 318 * root directory vnode, if one 319 */ 320 if (filed.fd_rdir) 321 vtrans(filed.fd_rdir, filed.fd_nrdir, RDIR, FREAD); 322 /* 323 * current working directory vnode 324 */ 325 vtrans(filed.fd_cdir, filed.fd_ncdir, CDIR, FREAD); 326 /* 327 * ktrace vnode, if one 328 */ 329 if (p->p_tracep) 330 vtrans(p->p_tracep, NULL, TRACE, FREAD|FWRITE); 331 /* 332 * text vnode, if one 333 */ 334 if (p->p_textvp) 335 vtrans(p->p_textvp, NULL, TEXT, FREAD); 336 /* 337 * open files 338 */ 339 #define FPSIZE (sizeof (struct file *)) 340 ALLOC_OFILES(filed.fd_lastfile+1); 341 if (filed.fd_nfiles > NDFILE) { 342 if (!KVM_READ(filed.fd_ofiles, ofiles, 343 (filed.fd_lastfile+1) * FPSIZE)) { 344 dprintf(stderr, 345 "can't read file structures at %p for pid %d\n", 346 (void *)filed.fd_ofiles, Pid); 347 return; 348 } 349 } else 350 bcopy(filed0.fd_dfiles, ofiles, (filed.fd_lastfile+1) * FPSIZE); 351 for (i = 0; i <= filed.fd_lastfile; i++) { 352 if (ofiles[i] == NULL) 353 continue; 354 if (!KVM_READ(ofiles[i], &file, sizeof (struct file))) { 355 dprintf(stderr, "can't read file %d at %p for pid %d\n", 356 i, (void *)ofiles[i], Pid); 357 continue; 358 } 359 if (file.f_type == DTYPE_VNODE) { 360 vtrans((struct vnode *)file.f_data, file.f_ncp, i, 361 file.f_flag); 362 } else if (file.f_type == DTYPE_SOCKET) { 363 if (checkfile == 0) 364 socktrans((struct socket *)file.f_data, i); 365 } 366 #ifdef DTYPE_PIPE 367 else if (file.f_type == DTYPE_PIPE) { 368 if (checkfile == 0) 369 pipetrans((struct pipe *)file.f_data, i, 370 file.f_flag); 371 } 372 #endif 373 #ifdef DTYPE_FIFO 374 else if (file.f_type == DTYPE_FIFO) { 375 if (checkfile == 0) 376 vtrans((struct vnode *)file.f_data, file.f_ncp, 377 i, file.f_flag); 378 } 379 #endif 380 else { 381 dprintf(stderr, 382 "unknown file type %d for file %d of pid %d\n", 383 file.f_type, i, Pid); 384 } 385 } 386 } 387 388 void 389 dommap(struct kinfo_proc *kp) 390 { 391 struct proc *p = &kp->kp_proc; 392 struct vmspace vmspace; 393 vm_map_t map; 394 struct vm_map_entry entry; 395 vm_map_entry_t entryp; 396 struct vm_object object; 397 vm_object_t objp; 398 int prot, fflags; 399 400 if (!KVM_READ(p->p_vmspace, &vmspace, sizeof(vmspace))) { 401 dprintf(stderr, "can't read vmspace at %p for pid %d\n", 402 (void *)p->p_vmspace, Pid); 403 return; 404 } 405 406 map = &vmspace.vm_map; 407 408 for (entryp = map->header.next; entryp != &p->p_vmspace->vm_map.header; 409 entryp = entry.next) { 410 if (!KVM_READ(entryp, &entry, sizeof(entry))) { 411 dprintf(stderr, 412 "can't read vm_map_entry at %p for pid %d\n", 413 (void *)entryp, Pid); 414 return; 415 } 416 417 if (entry.eflags & MAP_ENTRY_IS_SUB_MAP) 418 continue; 419 420 if ((objp = entry.object.vm_object) == NULL) 421 continue; 422 423 for (; objp; objp = object.backing_object) { 424 if (!KVM_READ(objp, &object, sizeof(object))) { 425 dprintf(stderr, 426 "can't read vm_object at %p for pid %d\n", 427 (void *)objp, Pid); 428 return; 429 } 430 } 431 432 prot = entry.protection; 433 fflags = (prot & VM_PROT_READ ? FREAD : 0) | 434 (prot & VM_PROT_WRITE ? FWRITE : 0); 435 436 switch (object.type) { 437 case OBJT_VNODE: 438 vtrans((struct vnode *)object.handle, NULL, 439 MMAP, fflags); 440 break; 441 default: 442 break; 443 } 444 } 445 } 446 447 void 448 vtrans(struct vnode *vp, struct namecache *ncp, int i, int flag) 449 { 450 struct vnode vn; 451 struct filestat fst; 452 char rw[3], mode[15]; 453 char *badtype = NULL, *filename; 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 case VT_MFS: 472 if (!ufs_filestat(&vn, &fst)) 473 badtype = "error"; 474 break; 475 case VT_NFS: 476 if (!nfs_filestat(&vn, &fst)) 477 badtype = "error"; 478 break; 479 480 case VT_MSDOSFS: 481 if (!msdosfs_filestat(&vn, &fst)) 482 badtype = "error"; 483 break; 484 485 case VT_ISOFS: 486 if (!isofs_filestat(&vn, &fst)) 487 badtype = "error"; 488 break; 489 490 default: { 491 static char unknown[10]; 492 sprintf(badtype = unknown, "?(%x)", vn.v_tag); 493 break;; 494 } 495 } 496 if (checkfile) { 497 int fsmatch = 0; 498 register DEVS *d; 499 500 if (badtype) 501 return; 502 for (d = devs; d != NULL; d = d->next) 503 if (d->fsid == fst.fsid) { 504 fsmatch = 1; 505 if (d->ino == fst.fileid) { 506 filename = d->name; 507 break; 508 } 509 } 510 if (fsmatch == 0 || (filename == NULL && fsflg == 0)) 511 return; 512 } 513 PREFIX(i); 514 if (badtype) { 515 (void)printf(" - - %10s -\n", badtype); 516 return; 517 } 518 if (nflg) 519 (void)printf(" %3d,%-9d ", major(fst.fsid), minor(fst.fsid)); 520 else 521 (void)printf(" %-*s", wflg_mnt, getmnton(vn.v_mount, &vn.v_namecache, ncp)); 522 if (nflg) 523 (void)sprintf(mode, "%o", fst.mode); 524 else 525 strmode(fst.mode, mode); 526 (void)printf(" %*ld %10s", ino_width, fst.fileid, mode); 527 switch (vn.v_type) { 528 case VBLK: 529 case VCHR: { 530 char *name; 531 532 if (nflg || ((name = devname(fst.rdev, vn.v_type == VCHR ? 533 S_IFCHR : S_IFBLK)) == NULL)) 534 printf(" %3d,%-4d", major(fst.rdev), minor(fst.rdev)); 535 else 536 printf(" %8s", name); 537 break; 538 } 539 default: 540 printf(" %8llu", fst.size); 541 } 542 rw[0] = '\0'; 543 if (flag & FREAD) 544 strcat(rw, "r"); 545 if (flag & FWRITE) 546 strcat(rw, "w"); 547 printf(" %2s", rw); 548 if (filename && !fsflg) 549 printf(" %s", filename); 550 putchar('\n'); 551 } 552 553 int 554 ufs_filestat(struct vnode *vp, struct filestat *fsp) 555 { 556 struct inode inode; 557 558 if (!KVM_READ(VTOI(vp), &inode, sizeof (inode))) { 559 dprintf(stderr, "can't read inode at %p for pid %d\n", 560 (void *)VTOI(vp), Pid); 561 return 0; 562 } 563 /* 564 * The st_dev from stat(2) is a udev_t. These kernel structures 565 * contain dev_t structures. We need to convert to udev to make 566 * comparisons 567 */ 568 fsp->fsid = dev2udev(inode.i_dev); 569 fsp->fileid = (long)inode.i_number; 570 fsp->mode = (mode_t)inode.i_mode; 571 fsp->size = inode.i_size; 572 fsp->rdev = inode.i_rdev; 573 574 return 1; 575 } 576 577 int 578 nfs_filestat(struct vnode *vp, struct filestat *fsp) 579 { 580 struct nfsnode nfsnode; 581 register mode_t mode; 582 583 if (!KVM_READ(VTONFS(vp), &nfsnode, sizeof (nfsnode))) { 584 dprintf(stderr, "can't read nfsnode at %p for pid %d\n", 585 (void *)VTONFS(vp), Pid); 586 return 0; 587 } 588 fsp->fsid = nfsnode.n_vattr.va_fsid; 589 fsp->fileid = nfsnode.n_vattr.va_fileid; 590 fsp->size = nfsnode.n_size; 591 fsp->rdev = nfsnode.n_vattr.va_rdev; 592 mode = (mode_t)nfsnode.n_vattr.va_mode; 593 switch (vp->v_type) { 594 case VREG: 595 mode |= S_IFREG; 596 break; 597 case VDIR: 598 mode |= S_IFDIR; 599 break; 600 case VBLK: 601 mode |= S_IFBLK; 602 break; 603 case VCHR: 604 mode |= S_IFCHR; 605 break; 606 case VLNK: 607 mode |= S_IFLNK; 608 break; 609 case VSOCK: 610 mode |= S_IFSOCK; 611 break; 612 case VFIFO: 613 mode |= S_IFIFO; 614 break; 615 case VNON: 616 case VBAD: 617 return 0; 618 }; 619 fsp->mode = mode; 620 621 return 1; 622 } 623 624 625 char * 626 getmnton(struct mount *m, struct namecache_list *ncplist, struct namecache *ncp) 627 { 628 static struct mount mount; 629 static struct mtab { 630 struct mtab *next; 631 struct mount *m; 632 char mntonname[MNAMELEN]; 633 } *mhead = NULL; 634 struct mtab *mt; 635 struct namecache ncp_copy; 636 static char path[1024]; 637 int i; 638 639 /* 640 * If no ncp is passed try to find one via ncplist. 641 */ 642 if (ncp == NULL) { 643 ncp = ncplist->tqh_first; 644 } 645 646 /* 647 * If we have an ncp, traceback the path. This is a kvm pointer. 648 */ 649 if (ncp) { 650 i = sizeof(path) - 1; 651 path[i] = 0; 652 while (ncp) { 653 if (!KVM_READ(ncp, &ncp_copy, sizeof(ncp_copy))) { 654 warnx("can't read ncp at %p", ncp); 655 return (NULL); 656 } 657 if (ncp_copy.nc_flag & NCF_MOUNTPT) { 658 ncp = ncp_copy.nc_parent; 659 continue; 660 } 661 if (i <= ncp_copy.nc_nlen) 662 break; 663 i -= ncp_copy.nc_nlen; 664 if (!KVM_READ(ncp_copy.nc_name, path + i, ncp_copy.nc_nlen)) { 665 warnx("can't read ncp %p path component at %p", ncp, ncp_copy.nc_name); 666 return (NULL); 667 } 668 path[--i] = '/'; 669 ncp = ncp_copy.nc_parent; 670 } 671 if (i == sizeof(path) - 1) 672 path[--i] = '/'; 673 return(path + i); 674 } 675 676 /* 677 * If all else fails print out the mount point path 678 */ 679 for (mt = mhead; mt != NULL; mt = mt->next) { 680 if (m == mt->m) 681 return (mt->mntonname); 682 } 683 if (!KVM_READ(m, &mount, sizeof(struct mount))) { 684 warnx("can't read mount table at %p", (void *)m); 685 return (NULL); 686 } 687 if ((mt = malloc(sizeof (struct mtab))) == NULL) 688 err(1, NULL); 689 mt->m = m; 690 bcopy(&mount.mnt_stat.f_mntonname[0], &mt->mntonname[0], MNAMELEN); 691 mt->next = mhead; 692 mhead = mt; 693 return (mt->mntonname); 694 } 695 696 void 697 pipetrans(struct pipe *pi, int i, int flag) 698 { 699 struct pipe pip; 700 char rw[3]; 701 702 PREFIX(i); 703 704 /* fill in socket */ 705 if (!KVM_READ(pi, &pip, sizeof(struct pipe))) { 706 dprintf(stderr, "can't read pipe at %p\n", (void *)pi); 707 goto bad; 708 } 709 710 printf("* pipe %8lx <-> %8lx", (u_long)pi, (u_long)pip.pipe_peer); 711 printf(" %6d", (int)pip.pipe_buffer.cnt); 712 rw[0] = '\0'; 713 if (flag & FREAD) 714 strcat(rw, "r"); 715 if (flag & FWRITE) 716 strcat(rw, "w"); 717 printf(" %2s", rw); 718 putchar('\n'); 719 return; 720 721 bad: 722 printf("* error\n"); 723 } 724 725 void 726 socktrans(struct socket *sock, int i) 727 { 728 static char *stypename[] = { 729 "unused", /* 0 */ 730 "stream", /* 1 */ 731 "dgram", /* 2 */ 732 "raw", /* 3 */ 733 "rdm", /* 4 */ 734 "seqpak" /* 5 */ 735 }; 736 #define STYPEMAX 5 737 struct socket so; 738 struct protosw proto; 739 struct domain dom; 740 struct inpcb inpcb; 741 struct unpcb unpcb; 742 int len; 743 char dname[32]; 744 745 PREFIX(i); 746 747 /* fill in socket */ 748 if (!KVM_READ(sock, &so, sizeof(struct socket))) { 749 dprintf(stderr, "can't read sock at %p\n", (void *)sock); 750 goto bad; 751 } 752 753 /* fill in protosw entry */ 754 if (!KVM_READ(so.so_proto, &proto, sizeof(struct protosw))) { 755 dprintf(stderr, "can't read protosw at %p", 756 (void *)so.so_proto); 757 goto bad; 758 } 759 760 /* fill in domain */ 761 if (!KVM_READ(proto.pr_domain, &dom, sizeof(struct domain))) { 762 dprintf(stderr, "can't read domain at %p\n", 763 (void *)proto.pr_domain); 764 goto bad; 765 } 766 767 if ((len = kvm_read(kd, (u_long)dom.dom_name, dname, 768 sizeof(dname) - 1)) < 0) { 769 dprintf(stderr, "can't read domain name at %p\n", 770 (void *)dom.dom_name); 771 dname[0] = '\0'; 772 } 773 else 774 dname[len] = '\0'; 775 776 if ((u_short)so.so_type > STYPEMAX) 777 printf("* %s ?%d", dname, so.so_type); 778 else 779 printf("* %s %s", dname, stypename[so.so_type]); 780 781 /* 782 * protocol specific formatting 783 * 784 * Try to find interesting things to print. For tcp, the interesting 785 * thing is the address of the tcpcb, for udp and others, just the 786 * inpcb (socket pcb). For unix domain, its the address of the socket 787 * pcb and the address of the connected pcb (if connected). Otherwise 788 * just print the protocol number and address of the socket itself. 789 * The idea is not to duplicate netstat, but to make available enough 790 * information for further analysis. 791 */ 792 switch(dom.dom_family) { 793 case AF_INET: 794 case AF_INET6: 795 getinetproto(proto.pr_protocol); 796 if (proto.pr_protocol == IPPROTO_TCP ) { 797 if (so.so_pcb) { 798 if (kvm_read(kd, (u_long)so.so_pcb, 799 (char *)&inpcb, sizeof(struct inpcb)) 800 != sizeof(struct inpcb)) { 801 dprintf(stderr, 802 "can't read inpcb at %p\n", 803 (void *)so.so_pcb); 804 goto bad; 805 } 806 printf(" %lx", (u_long)inpcb.inp_ppcb); 807 } 808 } 809 else if (so.so_pcb) 810 printf(" %lx", (u_long)so.so_pcb); 811 break; 812 case AF_UNIX: 813 /* print address of pcb and connected pcb */ 814 if (so.so_pcb) { 815 printf(" %lx", (u_long)so.so_pcb); 816 if (kvm_read(kd, (u_long)so.so_pcb, (char *)&unpcb, 817 sizeof(struct unpcb)) != sizeof(struct unpcb)){ 818 dprintf(stderr, "can't read unpcb at %p\n", 819 (void *)so.so_pcb); 820 goto bad; 821 } 822 if (unpcb.unp_conn) { 823 char shoconn[4], *cp; 824 825 cp = shoconn; 826 if (!(so.so_state & SS_CANTRCVMORE)) 827 *cp++ = '<'; 828 *cp++ = '-'; 829 if (!(so.so_state & SS_CANTSENDMORE)) 830 *cp++ = '>'; 831 *cp = '\0'; 832 printf(" %s %lx", shoconn, 833 (u_long)unpcb.unp_conn); 834 } 835 } 836 break; 837 default: 838 /* print protocol number and socket address */ 839 printf(" %d %lx", proto.pr_protocol, (u_long)sock); 840 } 841 printf("\n"); 842 return; 843 bad: 844 printf("* error\n"); 845 } 846 847 848 /* 849 * Read the specinfo structure in the kernel (as pointed to by a dev_t) 850 * in order to work out the associated udev_t 851 */ 852 udev_t 853 dev2udev(dev_t dev) 854 { 855 struct specinfo si; 856 857 if (KVM_READ(dev, &si, sizeof si)) { 858 return si.si_udev; 859 } else { 860 dprintf(stderr, "can't convert dev_t %x to a udev_t\n", dev); 861 return -1; 862 } 863 } 864 865 /* 866 * getinetproto -- 867 * print name of protocol number 868 */ 869 void 870 getinetproto(int number) 871 { 872 static int isopen; 873 register struct protoent *pe; 874 875 if (!isopen) 876 setprotoent(++isopen); 877 if ((pe = getprotobynumber(number)) != NULL) 878 printf(" %s", pe->p_name); 879 else 880 printf(" %d", number); 881 } 882 883 int 884 getfname(char *filename) 885 { 886 struct stat statbuf; 887 DEVS *cur; 888 889 if (stat(filename, &statbuf)) { 890 warn("%s", filename); 891 return(0); 892 } 893 if ((cur = malloc(sizeof(DEVS))) == NULL) 894 err(1, NULL); 895 cur->next = devs; 896 devs = cur; 897 898 cur->ino = statbuf.st_ino; 899 cur->fsid = statbuf.st_dev; 900 cur->name = filename; 901 return(1); 902 } 903 904 void 905 usage(void) 906 { 907 (void)fprintf(stderr, 908 "usage: fstat [-fmnv] [-p pid] [-u user] [-N system] [-M core] [file ...]\n"); 909 exit(1); 910 } 911