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 1.14 2005/06/22 01:50:03 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 static void make_printable(char *buf, int len); 103 104 #ifdef notdef 105 struct nlist nl[] = { 106 { "" }, 107 }; 108 #endif 109 110 int fsflg, /* show files on same filesystem as file(s) argument */ 111 pflg, /* show files open by a particular pid */ 112 uflg; /* show files open by a particular (effective) user */ 113 int checkfile; /* true if restricting to particular files or filesystems */ 114 int nflg; /* (numerical) display f.s. and rdev as dev_t */ 115 int vflg; /* display errors in locating kernel data objects etc... */ 116 int mflg; /* include memory-mapped files */ 117 int wflg_mnt = 16; 118 int wflg_cmd = 10; 119 int pid_width = 5; 120 int ino_width = 6; 121 122 123 struct fdnode *ofiles; /* buffer of pointers to file structures */ 124 int maxfiles; 125 126 #define ALLOC_OFILES(d) \ 127 if ((d) > maxfiles) { \ 128 free(ofiles); \ 129 ofiles = malloc((d) * sizeof(struct fdnode)); \ 130 if (ofiles == NULL) { \ 131 err(1, NULL); \ 132 } \ 133 maxfiles = (d); \ 134 } 135 136 kvm_t *kd; 137 138 void dofiles(struct kinfo_proc *kp); 139 void dommap(struct kinfo_proc *kp); 140 void vtrans(struct vnode *vp, struct namecache *ncp, int i, int flag); 141 int ufs_filestat(struct vnode *vp, struct filestat *fsp); 142 int nfs_filestat(struct vnode *vp, struct filestat *fsp); 143 char *getmnton(struct mount *m, struct namecache_list *ncplist, struct namecache *ncp); 144 void pipetrans(struct pipe *pi, int i, int flag); 145 void socktrans(struct socket *sock, int i); 146 void getinetproto(int number); 147 int getfname(const char *filename); 148 void usage(void); 149 150 151 int 152 main(int argc, char **argv) 153 { 154 struct passwd *passwd; 155 struct kinfo_proc *p, *plast; 156 int arg, ch, what; 157 char *memf, *nlistf; 158 char buf[_POSIX2_LINE_MAX]; 159 int cnt; 160 161 arg = 0; 162 what = KERN_PROC_ALL; 163 nlistf = memf = NULL; 164 while ((ch = getopt(argc, argv, "fmnp:u:vwN:M:")) != -1) 165 switch((char)ch) { 166 case 'f': 167 fsflg = 1; 168 break; 169 case 'M': 170 memf = optarg; 171 break; 172 case 'N': 173 nlistf = optarg; 174 break; 175 case 'm': 176 mflg = 1; 177 break; 178 case 'n': 179 nflg = 1; 180 break; 181 case 'p': 182 if (pflg++) 183 usage(); 184 if (!isdigit(*optarg)) { 185 warnx("-p requires a process id"); 186 usage(); 187 } 188 what = KERN_PROC_PID; 189 arg = atoi(optarg); 190 break; 191 case 'u': 192 if (uflg++) 193 usage(); 194 if (!(passwd = getpwnam(optarg))) 195 errx(1, "%s: unknown uid", optarg); 196 what = KERN_PROC_UID; 197 arg = passwd->pw_uid; 198 break; 199 case 'v': 200 vflg = 1; 201 break; 202 case 'w': 203 wflg_mnt = 40; 204 wflg_cmd = 16; 205 break; 206 case '?': 207 default: 208 usage(); 209 } 210 211 if (*(argv += optind)) { 212 for (; *argv; ++argv) { 213 if (getfname(*argv)) 214 checkfile = 1; 215 } 216 if (!checkfile) /* file(s) specified, but none accessable */ 217 exit(1); 218 } 219 220 ALLOC_OFILES(256); /* reserve space for file pointers */ 221 222 if (fsflg && !checkfile) { 223 /* -f with no files means use wd */ 224 if (getfname(".") == 0) 225 exit(1); 226 checkfile = 1; 227 } 228 229 /* 230 * Discard setgid privileges if not the running kernel so that bad 231 * guys can't print interesting stuff from kernel memory. 232 */ 233 if (nlistf != NULL || memf != NULL) 234 setgid(getgid()); 235 236 if ((kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, buf)) == NULL) 237 errx(1, "%s", buf); 238 #ifdef notdef 239 if (kvm_nlist(kd, nl) != 0) 240 errx(1, "no namelist: %s", kvm_geterr(kd)); 241 #endif 242 if ((p = kvm_getprocs(kd, what, arg, &cnt)) == NULL) 243 errx(1, "%s", kvm_geterr(kd)); 244 if (nflg) 245 printf("USER %-*.*s %*.*s FD DEV %*.*s MODE SZ|DV R/W", 246 wflg_cmd, wflg_cmd, "CMD", 247 pid_width, pid_width, "PID", 248 ino_width, ino_width, "INUM"); 249 else 250 printf("USER %-*.*s %*.*s FD %-*.*s %*.*s MODE SZ|DV R/W", 251 wflg_cmd, wflg_cmd, "CMD", 252 pid_width, pid_width, "PID", 253 wflg_mnt, wflg_mnt, "PATH", 254 ino_width, ino_width, "INUM"); 255 if (checkfile && fsflg == 0) 256 printf(" NAME\n"); 257 else 258 putchar('\n'); 259 260 for (plast = &p[cnt]; p < plast; ++p) { 261 if (p->kp_proc.p_stat == SZOMB) 262 continue; 263 dofiles(p); 264 if (mflg) 265 dommap(p); 266 } 267 exit(0); 268 } 269 270 char *Uname, *Comm; 271 int Pid; 272 273 #define PREFIX(i) \ 274 printf("%-8.8s %-*s %*d", Uname, wflg_cmd, Comm, pid_width, Pid); \ 275 switch(i) { \ 276 case TEXT: \ 277 printf(" text"); \ 278 break; \ 279 case CDIR: \ 280 printf(" wd"); \ 281 break; \ 282 case RDIR: \ 283 printf(" root"); \ 284 break; \ 285 case TRACE: \ 286 printf(" tr"); \ 287 break; \ 288 case MMAP: \ 289 printf(" mmap"); \ 290 break; \ 291 default: \ 292 printf(" %4d", i); \ 293 break; \ 294 } 295 296 /* 297 * print open files attributed to this process 298 */ 299 void 300 dofiles(struct kinfo_proc *kp) 301 { 302 int i; 303 struct file file; 304 struct filedesc filed; 305 struct proc *p = &kp->kp_proc; 306 struct eproc *ep = &kp->kp_eproc; 307 308 Uname = user_from_uid(ep->e_ucred.cr_uid, 0); 309 Pid = p->p_pid; 310 Comm = kp->kp_thread.td_comm; 311 make_printable(Comm, strlen(Comm)); 312 313 if (p->p_fd == NULL) 314 return; 315 if (!KVM_READ(p->p_fd, &filed, sizeof (filed))) { 316 dprintf(stderr, "can't read filedesc at %p for pid %d\n", 317 (void *)p->p_fd, Pid); 318 return; 319 } 320 /* 321 * root directory vnode, if one 322 */ 323 if (filed.fd_rdir) 324 vtrans(filed.fd_rdir, filed.fd_nrdir, RDIR, FREAD); 325 /* 326 * current working directory vnode 327 */ 328 vtrans(filed.fd_cdir, filed.fd_ncdir, CDIR, FREAD); 329 /* 330 * ktrace vnode, if one 331 */ 332 if (p->p_tracep) 333 vtrans(p->p_tracep, NULL, TRACE, FREAD|FWRITE); 334 /* 335 * text vnode, if one 336 */ 337 if (p->p_textvp) 338 vtrans(p->p_textvp, NULL, TEXT, FREAD); 339 /* 340 * open files 341 */ 342 ALLOC_OFILES(filed.fd_lastfile+1); 343 if (!KVM_READ(filed.fd_files, ofiles, 344 (filed.fd_lastfile+1) * sizeof(struct fdnode))) { 345 dprintf(stderr, 346 "can't read file structures at %p for pid %d\n", 347 (void *)filed.fd_files, Pid); 348 return; 349 } 350 for (i = 0; i <= filed.fd_lastfile; i++) { 351 if (ofiles[i].fp == NULL) 352 continue; 353 if (!KVM_READ(ofiles[i].fp, &file, sizeof (struct file))) { 354 dprintf(stderr, "can't read file %d at %p for pid %d\n", 355 i, (void *)ofiles[i].fp, Pid); 356 continue; 357 } 358 if (file.f_type == DTYPE_VNODE) { 359 vtrans((struct vnode *)file.f_data, file.f_ncp, i, 360 file.f_flag); 361 } else if (file.f_type == DTYPE_SOCKET) { 362 if (checkfile == 0) 363 socktrans((struct socket *)file.f_data, i); 364 } 365 #ifdef DTYPE_PIPE 366 else if (file.f_type == DTYPE_PIPE) { 367 if (checkfile == 0) 368 pipetrans((struct pipe *)file.f_data, i, 369 file.f_flag); 370 } 371 #endif 372 #ifdef DTYPE_FIFO 373 else if (file.f_type == DTYPE_FIFO) { 374 if (checkfile == 0) 375 vtrans((struct vnode *)file.f_data, file.f_ncp, 376 i, file.f_flag); 377 } 378 #endif 379 else { 380 dprintf(stderr, 381 "unknown file type %d for file %d of pid %d\n", 382 file.f_type, i, Pid); 383 } 384 } 385 } 386 387 void 388 dommap(struct kinfo_proc *kp) 389 { 390 struct proc *p = &kp->kp_proc; 391 struct vmspace vmspace; 392 vm_map_t map; 393 struct vm_map_entry entry; 394 vm_map_entry_t entryp; 395 struct vm_object object; 396 vm_object_t objp; 397 int prot, fflags; 398 399 if (!KVM_READ(p->p_vmspace, &vmspace, sizeof(vmspace))) { 400 dprintf(stderr, "can't read vmspace at %p for pid %d\n", 401 (void *)p->p_vmspace, Pid); 402 return; 403 } 404 405 map = &vmspace.vm_map; 406 407 for (entryp = map->header.next; entryp != &p->p_vmspace->vm_map.header; 408 entryp = entry.next) { 409 if (!KVM_READ(entryp, &entry, sizeof(entry))) { 410 dprintf(stderr, 411 "can't read vm_map_entry at %p for pid %d\n", 412 (void *)entryp, Pid); 413 return; 414 } 415 416 if (entry.eflags & MAP_ENTRY_IS_SUB_MAP) 417 continue; 418 419 if ((objp = entry.object.vm_object) == NULL) 420 continue; 421 422 for (; objp; objp = object.backing_object) { 423 if (!KVM_READ(objp, &object, sizeof(object))) { 424 dprintf(stderr, 425 "can't read vm_object at %p for pid %d\n", 426 (void *)objp, Pid); 427 return; 428 } 429 } 430 431 prot = entry.protection; 432 fflags = (prot & VM_PROT_READ ? FREAD : 0) | 433 (prot & VM_PROT_WRITE ? FWRITE : 0); 434 435 switch (object.type) { 436 case OBJT_VNODE: 437 vtrans((struct vnode *)object.handle, NULL, 438 MMAP, fflags); 439 break; 440 default: 441 break; 442 } 443 } 444 } 445 446 void 447 vtrans(struct vnode *vp, struct namecache *ncp, int i, int flag) 448 { 449 struct vnode vn; 450 struct filestat fst; 451 char rw[3], mode[15]; 452 const char *badtype = NULL, *filename; 453 454 filename = badtype = NULL; 455 if (!KVM_READ(vp, &vn, sizeof (struct vnode))) { 456 dprintf(stderr, "can't read vnode at %p for pid %d\n", 457 (void *)vp, Pid); 458 return; 459 } 460 if (vn.v_type == VNON || vn.v_tag == VT_NON) 461 badtype = "none"; 462 else if (vn.v_type == VBAD) 463 badtype = "bad"; 464 else 465 switch (vn.v_tag) { 466 case VT_UFS: 467 if (!ufs_filestat(&vn, &fst)) 468 badtype = "error"; 469 break; 470 case VT_MFS: 471 if (!ufs_filestat(&vn, &fst)) 472 badtype = "error"; 473 break; 474 case VT_NFS: 475 if (!nfs_filestat(&vn, &fst)) 476 badtype = "error"; 477 break; 478 479 case VT_MSDOSFS: 480 if (!msdosfs_filestat(&vn, &fst)) 481 badtype = "error"; 482 break; 483 484 case VT_ISOFS: 485 if (!isofs_filestat(&vn, &fst)) 486 badtype = "error"; 487 break; 488 489 default: { 490 static char unknown[10]; 491 sprintf(unknown, "?(%x)", vn.v_tag); 492 badtype=unknown; 493 break;; 494 } 495 } 496 if (checkfile) { 497 int fsmatch = 0; 498 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 == (ino_t)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 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_l; 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 make_printable(path + i, ncp_copy.nc_nlen); 669 path[--i] = '/'; 670 ncp = ncp_copy.nc_parent; 671 } 672 if (i == sizeof(path) - 1) 673 path[--i] = '/'; 674 return(path + i); 675 } 676 677 /* 678 * If all else fails print out the mount point path 679 */ 680 for (mt = mhead; mt != NULL; mt = mt->next) { 681 if (m == mt->m) 682 return (mt->mntonname); 683 } 684 if (!KVM_READ(m, &mount_l, sizeof(struct mount))) { 685 warnx("can't read mount table at %p", (void *)m); 686 return (NULL); 687 } 688 if ((mt = malloc(sizeof (struct mtab))) == NULL) 689 err(1, NULL); 690 mt->m = m; 691 bcopy(&mount_l.mnt_stat.f_mntonname[0], &mt->mntonname[0], MNAMELEN); 692 mt->next = mhead; 693 mhead = mt; 694 return (mt->mntonname); 695 } 696 697 void 698 pipetrans(struct pipe *pi, int i, int flag) 699 { 700 struct pipe pip; 701 char rw[3]; 702 703 PREFIX(i); 704 705 /* fill in socket */ 706 if (!KVM_READ(pi, &pip, sizeof(struct pipe))) { 707 dprintf(stderr, "can't read pipe at %p\n", (void *)pi); 708 goto bad; 709 } 710 711 printf("* pipe %8lx <-> %8lx", (u_long)pi, (u_long)pip.pipe_peer); 712 printf(" %6d", (int)pip.pipe_buffer.cnt); 713 rw[0] = '\0'; 714 if (flag & FREAD) 715 strcat(rw, "r"); 716 if (flag & FWRITE) 717 strcat(rw, "w"); 718 printf(" %2s", rw); 719 putchar('\n'); 720 return; 721 722 bad: 723 printf("* error\n"); 724 } 725 726 void 727 socktrans(struct socket *sock, int i) 728 { 729 static const 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]; 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 (const 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; 844 bad: 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 */ 853 udev_t 854 dev2udev(dev_t dev) 855 { 856 struct specinfo si; 857 858 if (KVM_READ(dev, &si, sizeof si)) { 859 return si.si_udev; 860 } else { 861 dprintf(stderr, "can't convert dev_t %x to a udev_t\n", dev); 862 return -1; 863 } 864 } 865 866 /* 867 * getinetproto -- 868 * print name of protocol number 869 */ 870 void 871 getinetproto(int number) 872 { 873 static int isopen; 874 struct protoent *pe; 875 876 if (!isopen) 877 setprotoent(++isopen); 878 if ((pe = getprotobynumber(number)) != NULL) 879 printf(" %s", pe->p_name); 880 else 881 printf(" %d", number); 882 } 883 884 int 885 getfname(const char *filename) 886 { 887 struct stat statbuf; 888 DEVS *cur; 889 890 if (stat(filename, &statbuf)) { 891 warn("%s", filename); 892 return(0); 893 } 894 if ((cur = malloc(sizeof(DEVS))) == NULL) 895 err(1, NULL); 896 cur->next = devs; 897 devs = cur; 898 899 cur->ino = statbuf.st_ino; 900 cur->fsid = statbuf.st_dev; 901 cur->name = filename; 902 return(1); 903 } 904 905 void 906 usage(void) 907 { 908 (void)fprintf(stderr, 909 "usage: fstat [-fmnv] [-p pid] [-u user] [-N system] [-M core] [file ...]\n"); 910 exit(1); 911 } 912 913 static 914 void 915 make_printable(char *buf, int len) 916 { 917 while (len > 0) { 918 if (!isprint(*buf)) 919 *buf = '?'; 920 ++buf; 921 --len; 922 } 923 } 924