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 #define _KERNEL 64 #include <sys/pipe.h> 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(int argc, char **argv) 160 { 161 struct passwd *passwd; 162 int arg, ch, what; 163 164 arg = 0; 165 what = KERN_PROC_ALL; 166 nlistf = memf = NULL; 167 while ((ch = getopt(argc, argv, "fmnp:u:vN:M:")) != -1) 168 switch((char)ch) { 169 case 'f': 170 fsflg = 1; 171 break; 172 case 'M': 173 memf = optarg; 174 break; 175 case 'N': 176 nlistf = optarg; 177 break; 178 case 'm': 179 mflg = 1; 180 break; 181 case 'n': 182 nflg = 1; 183 break; 184 case 'p': 185 if (pflg++) 186 usage(); 187 if (!isdigit(*optarg)) { 188 warnx("-p requires a process id"); 189 usage(); 190 } 191 what = KERN_PROC_PID; 192 arg = atoi(optarg); 193 break; 194 case 'u': 195 if (uflg++) 196 usage(); 197 if (!(passwd = getpwnam(optarg))) 198 errx(1, "%s: unknown uid", optarg); 199 what = KERN_PROC_UID; 200 arg = passwd->pw_uid; 201 break; 202 case 'v': 203 vflg = 1; 204 break; 205 case '?': 206 default: 207 usage(); 208 } 209 210 if (*(argv += optind)) { 211 for (; *argv; ++argv) { 212 if (getfname(*argv)) 213 checkfile = 1; 214 } 215 if (!checkfile) /* file(s) specified, but none accessable */ 216 exit(1); 217 } 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 if (memf != NULL) 227 fstat_kvm(what, arg); 228 else 229 fstat_sysctl(what, arg); 230 exit(0); 231 } 232 233 static void 234 print_header(void) 235 { 236 237 if (nflg) 238 printf("%s", 239 "USER CMD PID FD DEV INUM MODE SZ|DV R/W"); 240 else 241 printf("%s", 242 "USER CMD PID FD MOUNT INUM MODE SZ|DV R/W"); 243 if (checkfile && fsflg == 0) 244 printf(" NAME\n"); 245 else 246 putchar('\n'); 247 } 248 249 static void 250 fstat_kvm(int what, int arg) 251 { 252 struct kinfo_proc *p, *plast; 253 char buf[_POSIX2_LINE_MAX]; 254 int cnt; 255 256 ALLOC_OFILES(256); /* reserve space for file pointers */ 257 258 /* 259 * Discard setgid privileges if not the running kernel so that bad 260 * guys can't print interesting stuff from kernel memory. 261 */ 262 if (nlistf != NULL || memf != NULL) 263 setgid(getgid()); 264 265 if ((kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, buf)) == NULL) 266 errx(1, "%s", buf); 267 setgid(getgid()); 268 #ifdef notdef 269 if (kvm_nlist(kd, nl) != 0) 270 errx(1, "no namelist: %s", kvm_geterr(kd)); 271 #endif 272 if ((p = kvm_getprocs(kd, what, arg, &cnt)) == NULL) 273 errx(1, "%s", kvm_geterr(kd)); 274 print_header(); 275 for (plast = &p[cnt]; p < plast; ++p) { 276 if (p->ki_stat == SZOMB) 277 continue; 278 dofiles(p); 279 if (mflg) 280 dommap(p); 281 } 282 } 283 284 static void 285 fstat_sysctl(int what, int arg) 286 { 287 288 /* not yet implemented */ 289 fstat_kvm(what, arg); 290 } 291 292 const char *Uname, *Comm; 293 int Pid; 294 295 #define PREFIX(i) printf("%-8.8s %-10s %5d", Uname, Comm, Pid); \ 296 switch(i) { \ 297 case TEXT: \ 298 printf(" text"); \ 299 break; \ 300 case CDIR: \ 301 printf(" wd"); \ 302 break; \ 303 case RDIR: \ 304 printf(" root"); \ 305 break; \ 306 case TRACE: \ 307 printf(" tr"); \ 308 break; \ 309 case MMAP: \ 310 printf(" mmap"); \ 311 break; \ 312 default: \ 313 printf(" %4d", i); \ 314 break; \ 315 } 316 317 /* 318 * print open files attributed to this process 319 */ 320 void 321 dofiles(struct kinfo_proc *kp) 322 { 323 int i; 324 struct file file; 325 struct filedesc0 filed0; 326 #define filed filed0.fd_fd 327 328 Uname = user_from_uid(kp->ki_uid, 0); 329 Pid = kp->ki_pid; 330 Comm = kp->ki_comm; 331 332 if (kp->ki_fd == NULL) 333 return; 334 if (!KVM_READ(kp->ki_fd, &filed0, sizeof (filed0))) { 335 dprintf(stderr, "can't read filedesc at %p for pid %d\n", 336 (void *)kp->ki_fd, Pid); 337 return; 338 } 339 /* 340 * root directory vnode, if one 341 */ 342 if (filed.fd_rdir) 343 vtrans(filed.fd_rdir, RDIR, FREAD); 344 /* 345 * current working directory vnode 346 */ 347 vtrans(filed.fd_cdir, CDIR, FREAD); 348 /* 349 * ktrace vnode, if one 350 */ 351 if (kp->ki_tracep) 352 vtrans(kp->ki_tracep, TRACE, FREAD|FWRITE); 353 /* 354 * text vnode, if one 355 */ 356 if (kp->ki_textvp) 357 vtrans(kp->ki_textvp, TEXT, FREAD); 358 /* 359 * open files 360 */ 361 #define FPSIZE (sizeof (struct file *)) 362 ALLOC_OFILES(filed.fd_lastfile+1); 363 if (filed.fd_nfiles > NDFILE) { 364 if (!KVM_READ(filed.fd_ofiles, ofiles, 365 (filed.fd_lastfile+1) * FPSIZE)) { 366 dprintf(stderr, 367 "can't read file structures at %p for pid %d\n", 368 (void *)filed.fd_ofiles, Pid); 369 return; 370 } 371 } else 372 bcopy(filed0.fd_dfiles, ofiles, (filed.fd_lastfile+1) * FPSIZE); 373 for (i = 0; i <= filed.fd_lastfile; i++) { 374 if (ofiles[i] == NULL) 375 continue; 376 if (!KVM_READ(ofiles[i], &file, sizeof (struct file))) { 377 dprintf(stderr, "can't read file %d at %p for pid %d\n", 378 i, (void *)ofiles[i], Pid); 379 continue; 380 } 381 if (file.f_type == DTYPE_VNODE) 382 vtrans(file.f_data, i, file.f_flag); 383 else if (file.f_type == DTYPE_SOCKET) { 384 if (checkfile == 0) 385 socktrans(file.f_data, i); 386 } 387 #ifdef DTYPE_PIPE 388 else if (file.f_type == DTYPE_PIPE) { 389 if (checkfile == 0) 390 pipetrans(file.f_data, i, file.f_flag); 391 } 392 #endif 393 #ifdef DTYPE_FIFO 394 else if (file.f_type == DTYPE_FIFO) { 395 if (checkfile == 0) 396 vtrans(file.f_data, i, file.f_flag); 397 } 398 #endif 399 else { 400 dprintf(stderr, 401 "unknown file type %d for file %d of pid %d\n", 402 file.f_type, i, Pid); 403 } 404 } 405 } 406 407 void 408 dommap(struct kinfo_proc *kp) 409 { 410 vm_map_t map; 411 struct vmspace vmspace; 412 struct vm_map_entry entry; 413 vm_map_entry_t entryp; 414 struct vm_object object; 415 vm_object_t objp; 416 int prot, fflags; 417 418 if (!KVM_READ(kp->ki_vmspace, &vmspace, sizeof(vmspace))) { 419 dprintf(stderr, 420 "can't read vmspace at %p for pid %d\n", 421 (void *)kp->ki_vmspace, Pid); 422 return; 423 } 424 map = &vmspace.vm_map; 425 426 for (entryp = map->header.next; 427 entryp != &kp->ki_vmspace->vm_map.header; entryp = entry.next) { 428 if (!KVM_READ(entryp, &entry, sizeof(entry))) { 429 dprintf(stderr, 430 "can't read vm_map_entry at %p for pid %d\n", 431 (void *)entryp, Pid); 432 return; 433 } 434 435 if (entry.eflags & MAP_ENTRY_IS_SUB_MAP) 436 continue; 437 438 if ((objp = entry.object.vm_object) == NULL) 439 continue; 440 441 for (; objp; objp = object.backing_object) { 442 if (!KVM_READ(objp, &object, sizeof(object))) { 443 dprintf(stderr, 444 "can't read vm_object at %p for pid %d\n", 445 (void *)objp, Pid); 446 return; 447 } 448 } 449 450 prot = entry.protection; 451 fflags = (prot & VM_PROT_READ ? FREAD : 0) | 452 (prot & VM_PROT_WRITE ? FWRITE : 0); 453 454 switch (object.type) { 455 case OBJT_VNODE: 456 vtrans((struct vnode *)object.handle, MMAP, fflags); 457 break; 458 default: 459 break; 460 } 461 } 462 } 463 464 void 465 vtrans(struct vnode *vp, int i, int flag) 466 { 467 struct vnode vn; 468 struct filestat fst; 469 char rw[3], mode[15], tagstr[12], *tagptr; 470 const char *badtype, *filename; 471 472 filename = badtype = NULL; 473 if (!KVM_READ(vp, &vn, sizeof (struct vnode))) { 474 dprintf(stderr, "can't read vnode at %p for pid %d\n", 475 (void *)vp, Pid); 476 return; 477 } 478 if (!KVM_READ(&vp->v_tag, &tagptr, sizeof tagptr) || 479 !KVM_READ(tagptr, tagstr, sizeof tagstr)) { 480 dprintf(stderr, "can't read v_tag at %p for pid %d\n", 481 (void *)vp, Pid); 482 return; 483 } 484 tagstr[sizeof(tagstr) - 1] = '\0'; 485 if (vn.v_type == VNON) 486 badtype = "none"; 487 else if (vn.v_type == VBAD) 488 badtype = "bad"; 489 else { 490 if (!strcmp("ufs", tagstr)) { 491 if (!ufs_filestat(&vn, &fst)) 492 badtype = "error"; 493 } else if (!strcmp("devfs", tagstr)) { 494 if (!devfs_filestat(&vn, &fst)) 495 badtype = "error"; 496 } else if (!strcmp("nfs", tagstr)) { 497 if (!nfs_filestat(&vn, &fst)) 498 badtype = "error"; 499 } else if (!strcmp("msdosfs", tagstr)) { 500 if (!msdosfs_filestat(&vn, &fst)) 501 badtype = "error"; 502 } else if (!strcmp("isofs", tagstr)) { 503 if (!isofs_filestat(&vn, &fst)) 504 badtype = "error"; 505 } else { 506 static char unknown[32]; 507 snprintf(unknown, sizeof unknown, "?(%s)", tagstr); 508 badtype = unknown; 509 } 510 } 511 if (checkfile) { 512 int fsmatch = 0; 513 DEVS *d; 514 515 if (badtype) 516 return; 517 for (d = devs; d != NULL; d = d->next) 518 if (d->fsid == fst.fsid) { 519 fsmatch = 1; 520 if (d->ino == fst.fileid) { 521 filename = d->name; 522 break; 523 } 524 } 525 if (fsmatch == 0 || (filename == NULL && fsflg == 0)) 526 return; 527 } 528 PREFIX(i); 529 if (badtype) { 530 (void)printf(" - - %10s -\n", badtype); 531 return; 532 } 533 if (nflg) 534 (void)printf(" %2d,%-2d", major(fst.fsid), minor(fst.fsid)); 535 else 536 (void)printf(" %-8s", getmnton(vn.v_mount)); 537 if (nflg) 538 (void)sprintf(mode, "%o", fst.mode); 539 else 540 strmode(fst.mode, mode); 541 (void)printf(" %6ld %10s", fst.fileid, mode); 542 switch (vn.v_type) { 543 case VBLK: 544 case VCHR: { 545 char *name; 546 547 if (nflg || ((name = devname(fst.rdev, vn.v_type == VCHR ? 548 S_IFCHR : S_IFBLK)) == NULL)) 549 printf(" %2d,%-2d", major(fst.rdev), minor(fst.rdev)); 550 else 551 printf(" %6s", name); 552 break; 553 } 554 default: 555 printf(" %6lu", fst.size); 556 } 557 rw[0] = '\0'; 558 if (flag & FREAD) 559 strcat(rw, "r"); 560 if (flag & FWRITE) 561 strcat(rw, "w"); 562 printf(" %2s", rw); 563 if (filename && !fsflg) 564 printf(" %s", filename); 565 putchar('\n'); 566 } 567 568 int 569 ufs_filestat(struct vnode *vp, struct filestat *fsp) 570 { 571 struct inode inode; 572 573 if (!KVM_READ(VTOI(vp), &inode, sizeof (inode))) { 574 dprintf(stderr, "can't read inode at %p for pid %d\n", 575 (void *)VTOI(vp), Pid); 576 return 0; 577 } 578 /* 579 * The st_dev from stat(2) is a dev_t. These kernel structures 580 * contain cdev pointers. We need to convert to dev_t to make 581 * comparisons 582 */ 583 fsp->fsid = dev2udev(inode.i_dev); 584 fsp->fileid = (long)inode.i_number; 585 fsp->mode = (mode_t)inode.i_mode; 586 fsp->size = (u_long)inode.i_size; 587 #if should_be_but_is_hard 588 /* XXX - need to load i_ump and i_din[12] from kernel memory */ 589 if (inode.i_ump->um_fstype == UFS1) 590 fsp->rdev = inode.i_din1->di_rdev; 591 else 592 fsp->rdev = inode.i_din2->di_rdev; 593 #else 594 fsp->rdev = 0; 595 #endif 596 597 return 1; 598 } 599 600 int 601 devfs_filestat(struct vnode *vp, struct filestat *fsp) 602 { 603 struct devfs_dirent devfs_dirent; 604 struct mount mount; 605 struct vnode vnode; 606 607 if (!KVM_READ(vp->v_data, &devfs_dirent, sizeof (devfs_dirent))) { 608 dprintf(stderr, "can't read devfs_dirent at %p for pid %d\n", 609 (void *)vp->v_data, Pid); 610 return 0; 611 } 612 if (!KVM_READ(vp->v_mount, &mount, sizeof (mount))) { 613 dprintf(stderr, "can't read mount at %p for pid %d\n", 614 (void *)vp->v_mount, Pid); 615 return 0; 616 } 617 if (!KVM_READ(devfs_dirent.de_vnode, &vnode, sizeof (vnode))) { 618 dprintf(stderr, "can't read vnode at %p for pid %d\n", 619 (void *)devfs_dirent.de_vnode, Pid); 620 return 0; 621 } 622 fsp->fsid = (long)mount.mnt_stat.f_fsid.val[0]; 623 fsp->fileid = devfs_dirent.de_inode; 624 fsp->mode = (devfs_dirent.de_mode & ~S_IFMT) | S_IFCHR; 625 fsp->size = 0; 626 fsp->rdev = dev2udev(vnode.v_rdev); 627 628 return 1; 629 } 630 631 int 632 nfs_filestat(struct vnode *vp, struct filestat *fsp) 633 { 634 struct nfsnode nfsnode; 635 mode_t mode; 636 637 if (!KVM_READ(VTONFS(vp), &nfsnode, sizeof (nfsnode))) { 638 dprintf(stderr, "can't read nfsnode at %p for pid %d\n", 639 (void *)VTONFS(vp), Pid); 640 return 0; 641 } 642 fsp->fsid = nfsnode.n_vattr.va_fsid; 643 fsp->fileid = nfsnode.n_vattr.va_fileid; 644 fsp->size = nfsnode.n_size; 645 fsp->rdev = nfsnode.n_vattr.va_rdev; 646 mode = (mode_t)nfsnode.n_vattr.va_mode; 647 switch (vp->v_type) { 648 case VREG: 649 mode |= S_IFREG; 650 break; 651 case VDIR: 652 mode |= S_IFDIR; 653 break; 654 case VBLK: 655 mode |= S_IFBLK; 656 break; 657 case VCHR: 658 mode |= S_IFCHR; 659 break; 660 case VLNK: 661 mode |= S_IFLNK; 662 break; 663 case VSOCK: 664 mode |= S_IFSOCK; 665 break; 666 case VFIFO: 667 mode |= S_IFIFO; 668 break; 669 case VNON: 670 case VBAD: 671 return 0; 672 }; 673 fsp->mode = mode; 674 675 return 1; 676 } 677 678 679 char * 680 getmnton(struct mount *m) 681 { 682 static struct mount mount; 683 static struct mtab { 684 struct mtab *next; 685 struct mount *m; 686 char mntonname[MNAMELEN]; 687 } *mhead = NULL; 688 struct mtab *mt; 689 690 for (mt = mhead; mt != NULL; mt = mt->next) 691 if (m == mt->m) 692 return (mt->mntonname); 693 if (!KVM_READ(m, &mount, sizeof(struct mount))) { 694 warnx("can't read mount table at %p", (void *)m); 695 return (NULL); 696 } 697 if ((mt = malloc(sizeof (struct mtab))) == NULL) 698 err(1, NULL); 699 mt->m = m; 700 bcopy(&mount.mnt_stat.f_mntonname[0], &mt->mntonname[0], MNAMELEN); 701 mt->next = mhead; 702 mhead = mt; 703 return (mt->mntonname); 704 } 705 706 void 707 pipetrans(struct pipe *pi, int i, int flag) 708 { 709 struct pipe pip; 710 char rw[3]; 711 712 PREFIX(i); 713 714 /* fill in socket */ 715 if (!KVM_READ(pi, &pip, sizeof(struct pipe))) { 716 dprintf(stderr, "can't read pipe at %p\n", (void *)pi); 717 goto bad; 718 } 719 720 printf("* pipe %8lx <-> %8lx", (u_long)pi, (u_long)pip.pipe_peer); 721 printf(" %6d", (int)pip.pipe_buffer.cnt); 722 rw[0] = '\0'; 723 if (flag & FREAD) 724 strcat(rw, "r"); 725 if (flag & FWRITE) 726 strcat(rw, "w"); 727 printf(" %2s", rw); 728 putchar('\n'); 729 return; 730 731 bad: 732 printf("* error\n"); 733 } 734 735 void 736 socktrans(struct socket *sock, int i) 737 { 738 static const char *stypename[] = { 739 "unused", /* 0 */ 740 "stream", /* 1 */ 741 "dgram", /* 2 */ 742 "raw", /* 3 */ 743 "rdm", /* 4 */ 744 "seqpak" /* 5 */ 745 }; 746 #define STYPEMAX 5 747 struct socket so; 748 struct protosw proto; 749 struct domain dom; 750 struct inpcb inpcb; 751 struct unpcb unpcb; 752 int len; 753 char dname[32]; 754 755 PREFIX(i); 756 757 /* fill in socket */ 758 if (!KVM_READ(sock, &so, sizeof(struct socket))) { 759 dprintf(stderr, "can't read sock at %p\n", (void *)sock); 760 goto bad; 761 } 762 763 /* fill in protosw entry */ 764 if (!KVM_READ(so.so_proto, &proto, sizeof(struct protosw))) { 765 dprintf(stderr, "can't read protosw at %p", 766 (void *)so.so_proto); 767 goto bad; 768 } 769 770 /* fill in domain */ 771 if (!KVM_READ(proto.pr_domain, &dom, sizeof(struct domain))) { 772 dprintf(stderr, "can't read domain at %p\n", 773 (void *)proto.pr_domain); 774 goto bad; 775 } 776 777 if ((len = kvm_read(kd, (u_long)dom.dom_name, dname, 778 sizeof(dname) - 1)) < 0) { 779 dprintf(stderr, "can't read domain name at %p\n", 780 (void *)dom.dom_name); 781 dname[0] = '\0'; 782 } 783 else 784 dname[len] = '\0'; 785 786 if ((u_short)so.so_type > STYPEMAX) 787 printf("* %s ?%d", dname, so.so_type); 788 else 789 printf("* %s %s", dname, stypename[so.so_type]); 790 791 /* 792 * protocol specific formatting 793 * 794 * Try to find interesting things to print. For tcp, the interesting 795 * thing is the address of the tcpcb, for udp and others, just the 796 * inpcb (socket pcb). For unix domain, its the address of the socket 797 * pcb and the address of the connected pcb (if connected). Otherwise 798 * just print the protocol number and address of the socket itself. 799 * The idea is not to duplicate netstat, but to make available enough 800 * information for further analysis. 801 */ 802 switch(dom.dom_family) { 803 case AF_INET: 804 case AF_INET6: 805 getinetproto(proto.pr_protocol); 806 if (proto.pr_protocol == IPPROTO_TCP ) { 807 if (so.so_pcb) { 808 if (kvm_read(kd, (u_long)so.so_pcb, 809 (char *)&inpcb, sizeof(struct inpcb)) 810 != sizeof(struct inpcb)) { 811 dprintf(stderr, 812 "can't read inpcb at %p\n", 813 (void *)so.so_pcb); 814 goto bad; 815 } 816 printf(" %lx", (u_long)inpcb.inp_ppcb); 817 } 818 } 819 else if (so.so_pcb) 820 printf(" %lx", (u_long)so.so_pcb); 821 break; 822 case AF_UNIX: 823 /* print address of pcb and connected pcb */ 824 if (so.so_pcb) { 825 printf(" %lx", (u_long)so.so_pcb); 826 if (kvm_read(kd, (u_long)so.so_pcb, (char *)&unpcb, 827 sizeof(struct unpcb)) != sizeof(struct unpcb)){ 828 dprintf(stderr, "can't read unpcb at %p\n", 829 (void *)so.so_pcb); 830 goto bad; 831 } 832 if (unpcb.unp_conn) { 833 char shoconn[4], *cp; 834 835 cp = shoconn; 836 if (!(so.so_rcv.sb_state & SBS_CANTRCVMORE)) 837 *cp++ = '<'; 838 *cp++ = '-'; 839 if (!(so.so_snd.sb_state & SBS_CANTSENDMORE)) 840 *cp++ = '>'; 841 *cp = '\0'; 842 printf(" %s %lx", shoconn, 843 (u_long)unpcb.unp_conn); 844 } 845 } 846 break; 847 default: 848 /* print protocol number and socket address */ 849 printf(" %d %lx", proto.pr_protocol, (u_long)sock); 850 } 851 printf("\n"); 852 return; 853 bad: 854 printf("* error\n"); 855 } 856 857 858 /* 859 * Read the cdev structure in the kernel in order to work out the 860 * associated dev_t 861 */ 862 dev_t 863 dev2udev(struct cdev *dev) 864 { 865 struct cdev si; 866 867 if (KVM_READ(dev, &si, sizeof si)) { 868 return si.si_udev; 869 } else { 870 dprintf(stderr, "can't convert cdev *%p to a dev_t\n", dev); 871 return -1; 872 } 873 } 874 875 /* 876 * getinetproto -- 877 * print name of protocol number 878 */ 879 void 880 getinetproto(int number) 881 { 882 static int isopen; 883 struct protoent *pe; 884 885 if (!isopen) 886 setprotoent(++isopen); 887 if ((pe = getprotobynumber(number)) != NULL) 888 printf(" %s", pe->p_name); 889 else 890 printf(" %d", number); 891 } 892 893 int 894 getfname(const char *filename) 895 { 896 struct stat statbuf; 897 DEVS *cur; 898 899 if (stat(filename, &statbuf)) { 900 warn("%s", filename); 901 return(0); 902 } 903 if ((cur = malloc(sizeof(DEVS))) == NULL) 904 err(1, NULL); 905 cur->next = devs; 906 devs = cur; 907 908 cur->ino = statbuf.st_ino; 909 cur->fsid = statbuf.st_dev; 910 cur->name = filename; 911 return(1); 912 } 913 914 void 915 usage(void) 916 { 917 (void)fprintf(stderr, 918 "usage: fstat [-fmnv] [-p pid] [-u user] [-N system] [-M core] [file ...]\n"); 919 exit(1); 920 } 921