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 1.17 2006/08/03 16:40:48 swildner 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 <sys/ktrace.h> 59 #include <vfs/ufs/quota.h> 60 #include <vfs/ufs/inode.h> 61 #include <sys/mount.h> 62 #include <sys/namecache.h> 63 #include <nfs/nfsproto.h> 64 #include <nfs/rpcv2.h> 65 #include <nfs/nfs.h> 66 #include <nfs/nfsnode.h> 67 68 69 #include <vm/vm.h> 70 #include <vm/vm_map.h> 71 #include <vm/vm_object.h> 72 73 #include <net/route.h> 74 #include <netinet/in.h> 75 #include <netinet/in_systm.h> 76 #include <netinet/ip.h> 77 #include <netinet/in_pcb.h> 78 79 #include <ctype.h> 80 #include <err.h> 81 #include <fcntl.h> 82 #include <kvm.h> 83 #include <limits.h> 84 #include <nlist.h> 85 #include <paths.h> 86 #include <pwd.h> 87 #include <stdio.h> 88 #include <stdlib.h> 89 #include <string.h> 90 #include <unistd.h> 91 #include <netdb.h> 92 93 #include "fstat.h" 94 95 #define TEXT -1 96 #define CDIR -2 97 #define RDIR -3 98 #define TRACE -4 99 #define MMAP -5 100 101 DEVS *devs; 102 103 static void make_printable(char *buf, int len); 104 105 #ifdef notdef 106 struct nlist nl[] = { 107 { "" }, 108 }; 109 #endif 110 111 int fsflg, /* show files on same filesystem as file(s) argument */ 112 pflg, /* show files open by a particular pid */ 113 uflg; /* show files open by a particular (effective) user */ 114 int checkfile; /* true if restricting to particular files or filesystems */ 115 int nflg; /* (numerical) display f.s. and rdev as dev_t */ 116 int vflg; /* display errors in locating kernel data objects etc... */ 117 int mflg; /* include memory-mapped files */ 118 int wflg_mnt = 16; 119 int wflg_cmd = 10; 120 int pid_width = 5; 121 int ino_width = 6; 122 123 124 struct fdnode *ofiles; /* buffer of pointers to file structures */ 125 int maxfiles; 126 127 #define ALLOC_OFILES(d) \ 128 if ((d) > maxfiles) { \ 129 free(ofiles); \ 130 ofiles = malloc((d) * sizeof(struct fdnode)); \ 131 if (ofiles == NULL) { \ 132 err(1, NULL); \ 133 } \ 134 maxfiles = (d); \ 135 } 136 137 kvm_t *kd; 138 139 void dofiles(struct kinfo_proc *kp); 140 void dommap(struct kinfo_proc *kp); 141 void vtrans(struct vnode *vp, struct namecache *ncp, int i, int flag); 142 int ufs_filestat(struct vnode *vp, struct filestat *fsp); 143 int nfs_filestat(struct vnode *vp, struct filestat *fsp); 144 char *getmnton(struct mount *m, struct namecache_list *ncplist, struct namecache *ncp); 145 void pipetrans(struct pipe *pi, int i, int flag); 146 void socktrans(struct socket *sock, int i); 147 void getinetproto(int number); 148 int getfname(const char *filename); 149 void usage(void); 150 151 152 int 153 main(int argc, char **argv) 154 { 155 struct passwd *passwd; 156 struct kinfo_proc *p, *plast; 157 int arg, ch, what; 158 char *memf, *nlistf; 159 char buf[_POSIX2_LINE_MAX]; 160 int cnt; 161 162 arg = 0; 163 what = KERN_PROC_ALL; 164 nlistf = memf = NULL; 165 while ((ch = getopt(argc, argv, "fmnp:u:vwN:M:")) != -1) 166 switch((char)ch) { 167 case 'f': 168 fsflg = 1; 169 break; 170 case 'M': 171 memf = optarg; 172 break; 173 case 'N': 174 nlistf = optarg; 175 break; 176 case 'm': 177 mflg = 1; 178 break; 179 case 'n': 180 nflg = 1; 181 break; 182 case 'p': 183 if (pflg++) 184 usage(); 185 if (!isdigit(*optarg)) { 186 warnx("-p requires a process id"); 187 usage(); 188 } 189 what = KERN_PROC_PID; 190 arg = atoi(optarg); 191 break; 192 case 'u': 193 if (uflg++) 194 usage(); 195 if (!(passwd = getpwnam(optarg))) 196 errx(1, "%s: unknown uid", optarg); 197 what = KERN_PROC_UID; 198 arg = passwd->pw_uid; 199 break; 200 case 'v': 201 vflg = 1; 202 break; 203 case 'w': 204 wflg_mnt = 40; 205 wflg_cmd = 16; 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 ALLOC_OFILES(256); /* reserve space for file pointers */ 222 223 if (fsflg && !checkfile) { 224 /* -f with no files means use wd */ 225 if (getfname(".") == 0) 226 exit(1); 227 checkfile = 1; 228 } 229 230 /* 231 * Discard setgid privileges if not the running kernel so that bad 232 * guys can't print interesting stuff from kernel memory. 233 */ 234 if (nlistf != NULL || memf != NULL) 235 setgid(getgid()); 236 237 if ((kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, buf)) == NULL) 238 errx(1, "%s", buf); 239 #ifdef notdef 240 if (kvm_nlist(kd, nl) != 0) 241 errx(1, "no namelist: %s", kvm_geterr(kd)); 242 #endif 243 if ((p = kvm_getprocs(kd, what, arg, &cnt)) == NULL) 244 errx(1, "%s", kvm_geterr(kd)); 245 if (nflg) 246 printf("USER %-*.*s %*.*s FD DEV %*.*s MODE SZ|DV R/W", 247 wflg_cmd, wflg_cmd, "CMD", 248 pid_width, pid_width, "PID", 249 ino_width, ino_width, "INUM"); 250 else 251 printf("USER %-*.*s %*.*s FD %-*.*s %*.*s MODE SZ|DV R/W", 252 wflg_cmd, wflg_cmd, "CMD", 253 pid_width, pid_width, "PID", 254 wflg_mnt, wflg_mnt, "PATH", 255 ino_width, ino_width, "INUM"); 256 if (checkfile && fsflg == 0) 257 printf(" NAME\n"); 258 else 259 putchar('\n'); 260 261 for (plast = &p[cnt]; p < plast; ++p) { 262 if (p->kp_proc.p_stat == SZOMB) 263 continue; 264 dofiles(p); 265 if (mflg) 266 dommap(p); 267 } 268 exit(0); 269 } 270 271 char *Uname, *Comm; 272 int Pid; 273 274 #define PREFIX(i) \ 275 printf("%-8.8s %-*s %*d", Uname, wflg_cmd, Comm, pid_width, Pid); \ 276 switch(i) { \ 277 case TEXT: \ 278 printf(" text"); \ 279 break; \ 280 case CDIR: \ 281 printf(" wd"); \ 282 break; \ 283 case RDIR: \ 284 printf(" root"); \ 285 break; \ 286 case TRACE: \ 287 printf(" tr"); \ 288 break; \ 289 case MMAP: \ 290 printf(" mmap"); \ 291 break; \ 292 default: \ 293 printf(" %4d", i); \ 294 break; \ 295 } 296 297 /* 298 * print open files attributed to this process 299 */ 300 void 301 dofiles(struct kinfo_proc *kp) 302 { 303 int i; 304 struct file file; 305 struct filedesc filed; 306 struct ktrace_node ktrace_node; 307 struct proc *p = &kp->kp_proc; 308 struct eproc *ep = &kp->kp_eproc; 309 310 Uname = user_from_uid(ep->e_ucred.cr_uid, 0); 311 Pid = p->p_pid; 312 Comm = kp->kp_thread.td_comm; 313 make_printable(Comm, strlen(Comm)); 314 315 if (p->p_fd == NULL) 316 return; 317 if (!kread(p->p_fd, &filed, sizeof (filed))) { 318 dprintf(stderr, "can't read filedesc at %p for pid %d\n", 319 (void *)p->p_fd, Pid); 320 return; 321 } 322 /* 323 * root directory vnode, if one 324 */ 325 if (filed.fd_rdir) 326 vtrans(filed.fd_rdir, filed.fd_nrdir, RDIR, FREAD); 327 /* 328 * current working directory vnode 329 */ 330 vtrans(filed.fd_cdir, filed.fd_ncdir, CDIR, FREAD); 331 /* 332 * ktrace vnode, if one 333 */ 334 if (p->p_tracenode) { 335 if (kread(p->p_tracenode, &ktrace_node, sizeof (ktrace_node))) 336 vtrans(ktrace_node.kn_vp, NULL, TRACE, FREAD|FWRITE); 337 } 338 /* 339 * text vnode, if one 340 */ 341 if (p->p_textvp) 342 vtrans(p->p_textvp, NULL, TEXT, FREAD); 343 /* 344 * open files 345 */ 346 ALLOC_OFILES(filed.fd_lastfile+1); 347 if (!kread(filed.fd_files, ofiles, 348 (filed.fd_lastfile+1) * sizeof(struct fdnode))) { 349 dprintf(stderr, 350 "can't read file structures at %p for pid %d\n", 351 (void *)filed.fd_files, Pid); 352 return; 353 } 354 for (i = 0; i <= filed.fd_lastfile; i++) { 355 if (ofiles[i].fp == NULL) 356 continue; 357 if (!kread(ofiles[i].fp, &file, sizeof (struct file))) { 358 dprintf(stderr, "can't read file %d at %p for pid %d\n", 359 i, (void *)ofiles[i].fp, Pid); 360 continue; 361 } 362 if (file.f_type == DTYPE_VNODE) { 363 vtrans((struct vnode *)file.f_data, file.f_ncp, i, 364 file.f_flag); 365 } else if (file.f_type == DTYPE_SOCKET) { 366 if (checkfile == 0) 367 socktrans((struct socket *)file.f_data, i); 368 } 369 #ifdef DTYPE_PIPE 370 else if (file.f_type == DTYPE_PIPE) { 371 if (checkfile == 0) 372 pipetrans((struct pipe *)file.f_data, i, 373 file.f_flag); 374 } 375 #endif 376 #ifdef DTYPE_FIFO 377 else if (file.f_type == DTYPE_FIFO) { 378 if (checkfile == 0) 379 vtrans((struct vnode *)file.f_data, file.f_ncp, 380 i, file.f_flag); 381 } 382 #endif 383 else { 384 dprintf(stderr, 385 "unknown file type %d for file %d of pid %d\n", 386 file.f_type, i, Pid); 387 } 388 } 389 } 390 391 void 392 dommap(struct kinfo_proc *kp) 393 { 394 struct proc *p = &kp->kp_proc; 395 struct vmspace vmspace; 396 vm_map_t map; 397 struct vm_map_entry entry; 398 vm_map_entry_t entryp; 399 struct vm_object object; 400 vm_object_t objp; 401 int prot, fflags; 402 403 if (!kread(p->p_vmspace, &vmspace, sizeof(vmspace))) { 404 dprintf(stderr, "can't read vmspace at %p for pid %d\n", 405 (void *)p->p_vmspace, Pid); 406 return; 407 } 408 409 map = &vmspace.vm_map; 410 411 for (entryp = map->header.next; entryp != &p->p_vmspace->vm_map.header; 412 entryp = entry.next) { 413 if (!kread(entryp, &entry, sizeof(entry))) { 414 dprintf(stderr, 415 "can't read vm_map_entry at %p for pid %d\n", 416 (void *)entryp, Pid); 417 return; 418 } 419 420 if (entry.eflags & MAP_ENTRY_IS_SUB_MAP) 421 continue; 422 423 if ((objp = entry.object.vm_object) == NULL) 424 continue; 425 426 for (; objp; objp = object.backing_object) { 427 if (!kread(objp, &object, sizeof(object))) { 428 dprintf(stderr, 429 "can't read vm_object at %p for pid %d\n", 430 (void *)objp, Pid); 431 return; 432 } 433 } 434 435 prot = entry.protection; 436 fflags = (prot & VM_PROT_READ ? FREAD : 0) | 437 (prot & VM_PROT_WRITE ? FWRITE : 0); 438 439 switch (object.type) { 440 case OBJT_VNODE: 441 vtrans((struct vnode *)object.handle, NULL, 442 MMAP, fflags); 443 break; 444 default: 445 break; 446 } 447 } 448 } 449 450 void 451 vtrans(struct vnode *vp, struct namecache *ncp, int i, int flag) 452 { 453 struct vnode vn; 454 struct filestat fst; 455 char rw[3], mode[15]; 456 const char *badtype = NULL, *filename; 457 458 filename = badtype = NULL; 459 if (!kread(vp, &vn, sizeof (struct vnode))) { 460 dprintf(stderr, "can't read vnode at %p for pid %d\n", 461 (void *)vp, Pid); 462 return; 463 } 464 if (vn.v_type == VNON || vn.v_tag == VT_NON) 465 badtype = "none"; 466 else if (vn.v_type == VBAD) 467 badtype = "bad"; 468 else 469 switch (vn.v_tag) { 470 case VT_UFS: 471 if (!ufs_filestat(&vn, &fst)) 472 badtype = "error"; 473 break; 474 case VT_MFS: 475 if (!ufs_filestat(&vn, &fst)) 476 badtype = "error"; 477 break; 478 case VT_NFS: 479 if (!nfs_filestat(&vn, &fst)) 480 badtype = "error"; 481 break; 482 483 case VT_MSDOSFS: 484 if (!msdosfs_filestat(&vn, &fst)) 485 badtype = "error"; 486 break; 487 488 case VT_ISOFS: 489 if (!isofs_filestat(&vn, &fst)) 490 badtype = "error"; 491 break; 492 493 default: { 494 static char unknown[10]; 495 sprintf(unknown, "?(%x)", vn.v_tag); 496 badtype=unknown; 497 break; 498 } 499 } 500 if (checkfile) { 501 int fsmatch = 0; 502 DEVS *d; 503 504 if (badtype) 505 return; 506 for (d = devs; d != NULL; d = d->next) 507 if (d->fsid == fst.fsid) { 508 fsmatch = 1; 509 if (d->ino == (ino_t)fst.fileid) { 510 filename = d->name; 511 break; 512 } 513 } 514 if (fsmatch == 0 || (filename == NULL && fsflg == 0)) 515 return; 516 } 517 PREFIX(i); 518 if (badtype) { 519 (void)printf(" - - %10s -\n", badtype); 520 return; 521 } 522 if (nflg) 523 (void)printf(" %3d,%-9d ", major(fst.fsid), minor(fst.fsid)); 524 else 525 (void)printf(" %-*s", wflg_mnt, getmnton(vn.v_mount, &vn.v_namecache, ncp)); 526 if (nflg) 527 (void)sprintf(mode, "%o", fst.mode); 528 else 529 strmode(fst.mode, mode); 530 (void)printf(" %*ld %10s", ino_width, fst.fileid, mode); 531 switch (vn.v_type) { 532 case VBLK: 533 case VCHR: { 534 char *name; 535 536 if (nflg || ((name = devname(fst.rdev, vn.v_type == VCHR ? 537 S_IFCHR : S_IFBLK)) == NULL)) 538 printf(" %3d,%-4d", major(fst.rdev), minor(fst.rdev)); 539 else 540 printf(" %8s", name); 541 break; 542 } 543 default: 544 printf(" %8llu", fst.size); 545 } 546 rw[0] = '\0'; 547 if (flag & FREAD) 548 strcat(rw, "r"); 549 if (flag & FWRITE) 550 strcat(rw, "w"); 551 printf(" %2s", rw); 552 if (filename && !fsflg) 553 printf(" %s", filename); 554 putchar('\n'); 555 } 556 557 int 558 ufs_filestat(struct vnode *vp, struct filestat *fsp) 559 { 560 struct inode inode; 561 562 if (!kread(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 = inode.i_size; 576 fsp->rdev = inode.i_rdev; 577 578 return 1; 579 } 580 581 int 582 nfs_filestat(struct vnode *vp, struct filestat *fsp) 583 { 584 struct nfsnode nfsnode; 585 mode_t mode; 586 587 if (!kread(VTONFS(vp), &nfsnode, sizeof (nfsnode))) { 588 dprintf(stderr, "can't read nfsnode at %p for pid %d\n", 589 (void *)VTONFS(vp), Pid); 590 return 0; 591 } 592 fsp->fsid = nfsnode.n_vattr.va_fsid; 593 fsp->fileid = nfsnode.n_vattr.va_fileid; 594 fsp->size = nfsnode.n_size; 595 fsp->rdev = nfsnode.n_vattr.va_rdev; 596 mode = (mode_t)nfsnode.n_vattr.va_mode; 597 switch (vp->v_type) { 598 case VREG: 599 mode |= S_IFREG; 600 break; 601 case VDIR: 602 mode |= S_IFDIR; 603 break; 604 case VBLK: 605 mode |= S_IFBLK; 606 break; 607 case VCHR: 608 mode |= S_IFCHR; 609 break; 610 case VLNK: 611 mode |= S_IFLNK; 612 break; 613 case VSOCK: 614 mode |= S_IFSOCK; 615 break; 616 case VFIFO: 617 mode |= S_IFIFO; 618 break; 619 case VNON: 620 case VBAD: 621 return 0; 622 }; 623 fsp->mode = mode; 624 625 return 1; 626 } 627 628 629 char * 630 getmnton(struct mount *m, struct namecache_list *ncplist, struct namecache *ncp) 631 { 632 static struct mount mount_l; 633 static struct mtab { 634 struct mtab *next; 635 struct mount *m; 636 char mntonname[MNAMELEN]; 637 } *mhead = NULL; 638 struct mtab *mt; 639 struct namecache ncp_copy; 640 static char path[1024]; 641 int i; 642 643 /* 644 * If no ncp is passed try to find one via ncplist. 645 */ 646 if (ncp == NULL) { 647 ncp = ncplist->tqh_first; 648 } 649 650 /* 651 * If we have an ncp, traceback the path. This is a kvm pointer. 652 */ 653 if (ncp) { 654 i = sizeof(path) - 1; 655 path[i] = 0; 656 while (ncp) { 657 if (!kread(ncp, &ncp_copy, sizeof(ncp_copy))) { 658 warnx("can't read ncp at %p", ncp); 659 return (NULL); 660 } 661 if (ncp_copy.nc_flag & NCF_MOUNTPT) { 662 ncp = ncp_copy.nc_parent; 663 continue; 664 } 665 if (i <= ncp_copy.nc_nlen) 666 break; 667 i -= ncp_copy.nc_nlen; 668 if (!kread(ncp_copy.nc_name, path + i, ncp_copy.nc_nlen)) { 669 warnx("can't read ncp %p path component at %p", ncp, ncp_copy.nc_name); 670 return (NULL); 671 } 672 make_printable(path + i, ncp_copy.nc_nlen); 673 path[--i] = '/'; 674 ncp = ncp_copy.nc_parent; 675 } 676 if (i == sizeof(path) - 1) 677 path[--i] = '/'; 678 return(path + i); 679 } 680 681 /* 682 * If all else fails print out the mount point path 683 */ 684 for (mt = mhead; mt != NULL; mt = mt->next) { 685 if (m == mt->m) 686 return (mt->mntonname); 687 } 688 if (!kread(m, &mount_l, sizeof(struct mount))) { 689 warnx("can't read mount table at %p", (void *)m); 690 return (NULL); 691 } 692 if ((mt = malloc(sizeof (struct mtab))) == NULL) 693 err(1, NULL); 694 mt->m = m; 695 bcopy(&mount_l.mnt_stat.f_mntonname[0], &mt->mntonname[0], MNAMELEN); 696 mt->next = mhead; 697 mhead = mt; 698 return (mt->mntonname); 699 } 700 701 void 702 pipetrans(struct pipe *pi, int i, int flag) 703 { 704 struct pipe pip; 705 char rw[3]; 706 707 PREFIX(i); 708 709 /* fill in socket */ 710 if (!kread(pi, &pip, sizeof(struct pipe))) { 711 dprintf(stderr, "can't read pipe at %p\n", (void *)pi); 712 goto bad; 713 } 714 715 printf("* pipe %8lx <-> %8lx", (u_long)pi, (u_long)pip.pipe_peer); 716 printf(" %6d", (int)pip.pipe_buffer.cnt); 717 rw[0] = '\0'; 718 if (flag & FREAD) 719 strcat(rw, "r"); 720 if (flag & FWRITE) 721 strcat(rw, "w"); 722 printf(" %2s", rw); 723 putchar('\n'); 724 return; 725 726 bad: 727 printf("* error\n"); 728 } 729 730 void 731 socktrans(struct socket *sock, int i) 732 { 733 static const char *stypename[] = { 734 "unused", /* 0 */ 735 "stream", /* 1 */ 736 "dgram", /* 2 */ 737 "raw", /* 3 */ 738 "rdm", /* 4 */ 739 "seqpak" /* 5 */ 740 }; 741 #define STYPEMAX 5 742 struct socket so; 743 struct protosw proto; 744 struct domain dom; 745 struct inpcb inpcb; 746 struct unpcb unpcb; 747 int len; 748 char dname[32]; 749 750 PREFIX(i); 751 752 /* fill in socket */ 753 if (!kread(sock, &so, sizeof(struct socket))) { 754 dprintf(stderr, "can't read sock at %p\n", (void *)sock); 755 goto bad; 756 } 757 758 /* fill in protosw entry */ 759 if (!kread(so.so_proto, &proto, sizeof(struct protosw))) { 760 dprintf(stderr, "can't read protosw at %p", 761 (void *)so.so_proto); 762 goto bad; 763 } 764 765 /* fill in domain */ 766 if (!kread(proto.pr_domain, &dom, sizeof(struct domain))) { 767 dprintf(stderr, "can't read domain at %p\n", 768 (const void *)proto.pr_domain); 769 goto bad; 770 } 771 772 if ((len = kvm_read(kd, (u_long)dom.dom_name, dname, 773 sizeof(dname) - 1)) < 0) { 774 dprintf(stderr, "can't read domain name at %p\n", 775 (void *)dom.dom_name); 776 dname[0] = '\0'; 777 } 778 else 779 dname[len] = '\0'; 780 781 if ((u_short)so.so_type > STYPEMAX) 782 printf("* %s ?%d", dname, so.so_type); 783 else 784 printf("* %s %s", dname, stypename[so.so_type]); 785 786 /* 787 * protocol specific formatting 788 * 789 * Try to find interesting things to print. For tcp, the interesting 790 * thing is the address of the tcpcb, for udp and others, just the 791 * inpcb (socket pcb). For unix domain, its the address of the socket 792 * pcb and the address of the connected pcb (if connected). Otherwise 793 * just print the protocol number and address of the socket itself. 794 * The idea is not to duplicate netstat, but to make available enough 795 * information for further analysis. 796 */ 797 switch(dom.dom_family) { 798 case AF_INET: 799 case AF_INET6: 800 getinetproto(proto.pr_protocol); 801 if (proto.pr_protocol == IPPROTO_TCP ) { 802 if (so.so_pcb) { 803 if (kvm_read(kd, (u_long)so.so_pcb, 804 (char *)&inpcb, sizeof(struct inpcb)) 805 != sizeof(struct inpcb)) { 806 dprintf(stderr, 807 "can't read inpcb at %p\n", 808 (void *)so.so_pcb); 809 goto bad; 810 } 811 printf(" %lx", (u_long)inpcb.inp_ppcb); 812 } 813 } 814 else if (so.so_pcb) 815 printf(" %lx", (u_long)so.so_pcb); 816 break; 817 case AF_UNIX: 818 /* print address of pcb and connected pcb */ 819 if (so.so_pcb) { 820 printf(" %lx", (u_long)so.so_pcb); 821 if (kvm_read(kd, (u_long)so.so_pcb, (char *)&unpcb, 822 sizeof(struct unpcb)) != sizeof(struct unpcb)){ 823 dprintf(stderr, "can't read unpcb at %p\n", 824 (void *)so.so_pcb); 825 goto bad; 826 } 827 if (unpcb.unp_conn) { 828 char shoconn[4], *cp; 829 830 cp = shoconn; 831 if (!(so.so_state & SS_CANTRCVMORE)) 832 *cp++ = '<'; 833 *cp++ = '-'; 834 if (!(so.so_state & SS_CANTSENDMORE)) 835 *cp++ = '>'; 836 *cp = '\0'; 837 printf(" %s %lx", shoconn, 838 (u_long)unpcb.unp_conn); 839 } 840 } 841 break; 842 default: 843 /* print protocol number and socket address */ 844 printf(" %d %lx", proto.pr_protocol, (u_long)sock); 845 } 846 printf("\n"); 847 return; 848 bad: 849 printf("* error\n"); 850 } 851 852 853 /* 854 * Read the specinfo structure in the kernel (as pointed to by a dev_t) 855 * in order to work out the associated udev_t 856 */ 857 udev_t 858 dev2udev(void *dev) 859 { 860 struct specinfo si; 861 862 if (kread(dev, &si, sizeof si)) { 863 return si.si_udev; 864 } else { 865 dprintf(stderr, "can't convert dev_t %p to a udev_t\n", dev); 866 return -1; 867 } 868 } 869 870 /* 871 * getinetproto -- 872 * print name of protocol number 873 */ 874 void 875 getinetproto(int number) 876 { 877 static int isopen; 878 struct protoent *pe; 879 880 if (!isopen) 881 setprotoent(++isopen); 882 if ((pe = getprotobynumber(number)) != NULL) 883 printf(" %s", pe->p_name); 884 else 885 printf(" %d", number); 886 } 887 888 int 889 getfname(const char *filename) 890 { 891 struct stat statbuf; 892 DEVS *cur; 893 894 if (stat(filename, &statbuf)) { 895 warn("%s", filename); 896 return(0); 897 } 898 if ((cur = malloc(sizeof(DEVS))) == NULL) 899 err(1, NULL); 900 cur->next = devs; 901 devs = cur; 902 903 cur->ino = statbuf.st_ino; 904 cur->fsid = statbuf.st_dev; 905 cur->name = filename; 906 return(1); 907 } 908 909 void 910 usage(void) 911 { 912 (void)fprintf(stderr, 913 "usage: fstat [-fmnv] [-p pid] [-u user] [-N system] [-M core] [file ...]\n"); 914 exit(1); 915 } 916 917 static 918 void 919 make_printable(char *buf, int len) 920 { 921 while (len > 0) { 922 if (!isprint(*buf)) 923 *buf = '?'; 924 ++buf; 925 --len; 926 } 927 } 928 929 ssize_t 930 kread(const void *kaddr, void *uaddr, size_t nbytes) 931 { 932 if (nbytes > 0x10000000) 933 return(0); 934 935 if (kvm_read(kd, (u_long)kaddr, (char *)uaddr, nbytes) == (ssize_t)nbytes) 936 return(1); 937 else 938 return(0); 939 } 940 941