fstat.c revision 1.43
1 /* $NetBSD: fstat.c,v 1.43 2000/08/14 06:03:21 enami Exp $ */ 2 3 /*- 4 * Copyright (c) 1988, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #include <sys/cdefs.h> 37 #ifndef lint 38 __COPYRIGHT("@(#) Copyright (c) 1988, 1993\n\ 39 The Regents of the University of California. All rights reserved.\n"); 40 #endif /* not lint */ 41 42 #ifndef lint 43 #if 0 44 static char sccsid[] = "@(#)fstat.c 8.3 (Berkeley) 5/2/95"; 45 #else 46 __RCSID("$NetBSD: fstat.c,v 1.43 2000/08/14 06:03:21 enami Exp $"); 47 #endif 48 #endif /* not lint */ 49 50 #include <sys/param.h> 51 #include <sys/time.h> 52 #include <sys/proc.h> 53 #include <sys/user.h> 54 #include <sys/stat.h> 55 #include <sys/vnode.h> 56 #include <sys/socket.h> 57 #include <sys/socketvar.h> 58 #include <sys/domain.h> 59 #include <sys/protosw.h> 60 #include <sys/unpcb.h> 61 #include <sys/sysctl.h> 62 #include <sys/filedesc.h> 63 #define _KERNEL 64 #define _LKM 65 #include <sys/file.h> 66 #include <ufs/ufs/quota.h> 67 #include <ufs/ufs/inode.h> 68 #undef _LKM 69 #undef _KERNEL 70 #define _KERNEL 71 #include <sys/mount.h> 72 #undef _KERNEL 73 #define NFS 74 #include <nfs/nfsproto.h> 75 #include <nfs/rpcv2.h> 76 #include <nfs/nfs.h> 77 #include <nfs/nfsnode.h> 78 #undef NFS 79 #include <msdosfs/denode.h> 80 #include <msdosfs/bpb.h> 81 #define _KERNEL 82 #include <msdosfs/msdosfsmount.h> 83 #undef _KERNEL 84 #define _KERNEL 85 #include <miscfs/genfs/layer.h> 86 #undef _KERNEL 87 88 #include <net/route.h> 89 #include <netinet/in.h> 90 #include <netinet/in_systm.h> 91 #include <netinet/ip.h> 92 #include <netinet/in_pcb.h> 93 94 #ifdef INET6 95 #include <netinet/ip6.h> 96 #include <netinet6/ip6_var.h> 97 #include <netinet6/in6_pcb.h> 98 #endif 99 100 #include <netdb.h> 101 #include <arpa/inet.h> 102 103 #include <ctype.h> 104 #include <errno.h> 105 #include <kvm.h> 106 #include <limits.h> 107 #include <nlist.h> 108 #include <paths.h> 109 #include <pwd.h> 110 #include <stdio.h> 111 #include <stdlib.h> 112 #include <string.h> 113 #include <unistd.h> 114 #include <err.h> 115 116 #include "fstat.h" 117 118 #define TEXT -1 119 #define CDIR -2 120 #define RDIR -3 121 #define TRACE -4 122 123 typedef struct devs { 124 struct devs *next; 125 long fsid; 126 ino_t ino; 127 char *name; 128 } DEVS; 129 DEVS *devs; 130 131 int fsflg, /* show files on same filesystem as file(s) argument */ 132 pflg, /* show files open by a particular pid */ 133 uflg; /* show files open by a particular (effective) user */ 134 int checkfile; /* true if restricting to particular files or filesystems */ 135 int nflg; /* (numerical) display f.s. and rdev as dev_t */ 136 int vflg; /* display errors in locating kernel data objects etc... */ 137 138 struct file **ofiles; /* buffer of pointers to file structures */ 139 int maxfiles; 140 #define ALLOC_OFILES(d) \ 141 if ((d) > maxfiles) { \ 142 free(ofiles); \ 143 ofiles = malloc((d) * sizeof(struct file *)); \ 144 if (ofiles == NULL) { \ 145 err(1, "malloc(%u)", (d) * \ 146 (unsigned int)sizeof(struct file *)); \ 147 } \ 148 maxfiles = (d); \ 149 } 150 151 kvm_t *kd; 152 153 void dofiles __P((struct kinfo_proc *)); 154 int ext2fs_filestat __P((struct vnode *, struct filestat *)); 155 int getfname __P((char *)); 156 void getinetproto __P((int)); 157 char *getmnton __P((struct mount *)); 158 int layer_filestat __P((struct vnode *, struct filestat *, 159 struct vnode **)); 160 int main __P((int, char **)); 161 int msdosfs_filestat __P((struct vnode *, struct filestat *)); 162 int nfs_filestat __P((struct vnode *, struct filestat *)); 163 #ifdef INET6 164 static const char *inet6_addrstr __P((struct in6_addr *)); 165 #endif 166 void socktrans __P((struct socket *, int)); 167 int ufs_filestat __P((struct vnode *, struct filestat *)); 168 void usage __P((void)); 169 void vtrans __P((struct vnode *, int, int)); 170 void ftrans __P((struct file *, int)); 171 172 int 173 main(argc, argv) 174 int argc; 175 char **argv; 176 { 177 struct passwd *passwd; 178 struct kinfo_proc *p, *plast; 179 int arg, ch, what; 180 char *memf, *nlistf; 181 char buf[_POSIX2_LINE_MAX]; 182 int cnt; 183 gid_t egid = getegid(); 184 185 (void)setegid(getgid()); 186 arg = 0; 187 what = KERN_PROC_ALL; 188 nlistf = memf = NULL; 189 while ((ch = getopt(argc, argv, "fnp:u:vN:M:")) != -1) 190 switch((char)ch) { 191 case 'f': 192 fsflg = 1; 193 break; 194 case 'M': 195 memf = optarg; 196 break; 197 case 'N': 198 nlistf = optarg; 199 break; 200 case 'n': 201 nflg = 1; 202 break; 203 case 'p': 204 if (pflg++) 205 usage(); 206 if (!isdigit(*optarg)) { 207 warnx("-p requires a process id"); 208 usage(); 209 } 210 what = KERN_PROC_PID; 211 arg = atoi(optarg); 212 break; 213 case 'u': 214 if (uflg++) 215 usage(); 216 if (!(passwd = getpwnam(optarg))) { 217 errx(1, "%s: unknown uid", optarg); 218 } 219 what = KERN_PROC_UID; 220 arg = passwd->pw_uid; 221 break; 222 case 'v': 223 vflg = 1; 224 break; 225 case '?': 226 default: 227 usage(); 228 } 229 230 if (*(argv += optind)) { 231 for (; *argv; ++argv) { 232 if (getfname(*argv)) 233 checkfile = 1; 234 } 235 if (!checkfile) /* file(s) specified, but none accessable */ 236 exit(1); 237 } 238 239 ALLOC_OFILES(256); /* reserve space for file pointers */ 240 241 if (fsflg && !checkfile) { 242 /* -f with no files means use wd */ 243 if (getfname(".") == 0) 244 exit(1); 245 checkfile = 1; 246 } 247 248 /* 249 * Discard setgid privileges. If not the running kernel, we toss 250 * them away totally so that bad guys can't print interesting stuff 251 * from kernel memory, otherwise switch back to kmem for the 252 * duration of the kvm_openfiles() call. 253 */ 254 if (nlistf != NULL || memf != NULL) 255 (void)setgid(getgid()); 256 else 257 (void)setegid(egid); 258 259 if ((kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, buf)) == NULL) 260 errx(1, "%s", buf); 261 262 /* get rid of it now anyway */ 263 if (nlistf == NULL && memf == NULL) 264 (void)setgid(getgid()); 265 266 if ((p = kvm_getprocs(kd, what, arg, &cnt)) == NULL) { 267 errx(1, "%s", kvm_geterr(kd)); 268 } 269 if (nflg) 270 printf("%s", 271 "USER CMD PID FD DEV INUM MODE SZ|DV R/W"); 272 else 273 printf("%s", 274 "USER CMD PID FD MOUNT INUM MODE SZ|DV R/W"); 275 if (checkfile && fsflg == 0) 276 printf(" NAME\n"); 277 else 278 putchar('\n'); 279 280 for (plast = &p[cnt]; p < plast; ++p) { 281 if (p->kp_proc.p_stat == SZOMB) 282 continue; 283 dofiles(p); 284 } 285 exit(0); 286 } 287 288 const char *Uname, *Comm; 289 pid_t Pid; 290 291 #define PREFIX(i) printf("%-8.8s %-10s %5d", Uname, Comm, Pid); \ 292 switch(i) { \ 293 case TEXT: \ 294 printf(" text"); \ 295 break; \ 296 case CDIR: \ 297 printf(" wd"); \ 298 break; \ 299 case RDIR: \ 300 printf(" root"); \ 301 break; \ 302 case TRACE: \ 303 printf(" tr"); \ 304 break; \ 305 default: \ 306 printf(" %4d", i); \ 307 break; \ 308 } 309 310 /* 311 * print open files attributed to this process 312 */ 313 void 314 dofiles(kp) 315 struct kinfo_proc *kp; 316 { 317 int i; 318 struct filedesc0 filed0; 319 #define filed filed0.fd_fd 320 struct cwdinfo cwdi; 321 struct proc *p = &kp->kp_proc; 322 struct eproc *ep = &kp->kp_eproc; 323 324 Uname = user_from_uid(ep->e_ucred.cr_uid, 0); 325 Pid = p->p_pid; 326 Comm = p->p_comm; 327 328 if (p->p_fd == NULL || p->p_cwdi == NULL) 329 return; 330 if (!KVM_READ(p->p_fd, &filed0, sizeof (filed0))) { 331 warnx("can't read filedesc at %p for pid %d", p->p_fd, Pid); 332 return; 333 } 334 if (!KVM_READ(p->p_cwdi, &cwdi, sizeof(cwdi))) { 335 warnx("can't read cwdinfo at %p for pid %d", p->p_cwdi, Pid); 336 return; 337 } 338 if (filed.fd_nfiles < 0 || filed.fd_lastfile >= filed.fd_nfiles || 339 filed.fd_freefile > filed.fd_lastfile + 1) { 340 dprintf("filedesc corrupted at %p for pid %d", p->p_fd, Pid); 341 return; 342 } 343 /* 344 * root directory vnode, if one 345 */ 346 if (cwdi.cwdi_rdir) 347 vtrans(cwdi.cwdi_rdir, RDIR, FREAD); 348 /* 349 * current working directory vnode 350 */ 351 vtrans(cwdi.cwdi_cdir, CDIR, FREAD); 352 /* 353 * ktrace vnode, if one 354 */ 355 if (p->p_tracep) 356 ftrans(p->p_tracep, TRACE); 357 /* 358 * open files 359 */ 360 #define FPSIZE (sizeof (struct file *)) 361 ALLOC_OFILES(filed.fd_lastfile+1); 362 if (filed.fd_nfiles > NDFILE) { 363 if (!KVM_READ(filed.fd_ofiles, ofiles, 364 (filed.fd_lastfile+1) * FPSIZE)) { 365 dprintf("can't read file structures at %p for pid %d", 366 filed.fd_ofiles, Pid); 367 return; 368 } 369 } else 370 memmove(ofiles, filed0.fd_dfiles, 371 (filed.fd_lastfile+1) * FPSIZE); 372 for (i = 0; i <= filed.fd_lastfile; i++) { 373 if (ofiles[i] == NULL) 374 continue; 375 ftrans(ofiles[i], i); 376 } 377 } 378 379 void 380 ftrans (fp, i) 381 struct file *fp; 382 int i; 383 { 384 struct file file; 385 386 if (!KVM_READ(fp, &file, sizeof (struct file))) { 387 dprintf("can't read file %d at %p for pid %d", 388 i, fp, Pid); 389 return; 390 } 391 if (file.f_type == DTYPE_VNODE) 392 vtrans((struct vnode *)file.f_data, i, file.f_flag); 393 else if (file.f_type == DTYPE_SOCKET) { 394 if (checkfile == 0) 395 socktrans((struct socket *)file.f_data, i); 396 } else { 397 dprintf("unknown file type %d for file %d of pid %d", 398 file.f_type, i, Pid); 399 } 400 } 401 402 void 403 vtrans(vp, i, flag) 404 struct vnode *vp; 405 int i; 406 int flag; 407 { 408 struct vnode vn; 409 struct filestat fst; 410 char mode[15], rw[3]; 411 char *badtype, *filename; 412 413 again: 414 filename = badtype = NULL; 415 if (!KVM_READ(vp, &vn, sizeof (struct vnode))) { 416 dprintf("can't read vnode at %p for pid %d", vp, Pid); 417 return; 418 } 419 if (vn.v_type == VNON || vn.v_tag == VT_NON) 420 badtype = "none"; 421 else if (vn.v_type == VBAD) 422 badtype = "bad"; 423 else 424 switch (vn.v_tag) { 425 case VT_UFS: 426 if (!ufs_filestat(&vn, &fst)) 427 badtype = "error"; 428 break; 429 case VT_MFS: 430 if (!ufs_filestat(&vn, &fst)) 431 badtype = "error"; 432 break; 433 case VT_MSDOSFS: 434 if (!msdosfs_filestat(&vn, &fst)) 435 badtype = "error"; 436 break; 437 case VT_NFS: 438 if (!nfs_filestat(&vn, &fst)) 439 badtype = "error"; 440 break; 441 case VT_EXT2FS: 442 if (!ext2fs_filestat(&vn, &fst)) 443 badtype = "error"; 444 break; 445 case VT_ISOFS: 446 if (!isofs_filestat(&vn, &fst)) 447 badtype = "error"; 448 break; 449 case VT_NTFS: 450 if (!ntfs_filestat(&vn, &fst)) 451 badtype = "error"; 452 break; 453 case VT_NULL: 454 case VT_OVERLAY: 455 case VT_UMAP: 456 if (!layer_filestat(&vn, &fst, &vp)) 457 badtype = "error"; 458 else 459 goto again; 460 break; 461 default: { 462 static char unknown[10]; 463 (void)snprintf(badtype = unknown, sizeof unknown, 464 "?(%x)", vn.v_tag); 465 break;; 466 } 467 } 468 if (checkfile) { 469 int fsmatch = 0; 470 DEVS *d; 471 472 if (badtype) 473 return; 474 for (d = devs; d != NULL; d = d->next) 475 if (d->fsid == fst.fsid) { 476 fsmatch = 1; 477 if (d->ino == fst.fileid) { 478 filename = d->name; 479 break; 480 } 481 } 482 if (fsmatch == 0 || (filename == NULL && fsflg == 0)) 483 return; 484 } 485 PREFIX(i); 486 if (badtype) { 487 (void)printf(" - - %10s -\n", badtype); 488 return; 489 } 490 if (nflg) 491 (void)printf(" %2d,%-2d", major(fst.fsid), minor(fst.fsid)); 492 else 493 (void)printf(" %-8s", getmnton(vn.v_mount)); 494 if (nflg) 495 (void)snprintf(mode, sizeof mode, "%o", fst.mode); 496 else 497 strmode(fst.mode, mode); 498 (void)printf(" %6ld %10s", (long)fst.fileid, mode); 499 switch (vn.v_type) { 500 case VBLK: 501 case VCHR: { 502 char *name; 503 504 if (nflg || ((name = devname(fst.rdev, vn.v_type == VCHR ? 505 S_IFCHR : S_IFBLK)) == NULL)) 506 printf(" %2d,%-2d", major(fst.rdev), minor(fst.rdev)); 507 else 508 printf(" %6s", name); 509 break; 510 } 511 default: 512 printf(" %6qd", (long long)fst.size); 513 } 514 rw[0] = '\0'; 515 if (flag & FREAD) 516 strcat(rw, "r"); 517 if (flag & FWRITE) 518 strcat(rw, "w"); 519 printf(" %-2s", rw); 520 if (filename && !fsflg) 521 printf(" %s", filename); 522 putchar('\n'); 523 } 524 525 int 526 ufs_filestat(vp, fsp) 527 struct vnode *vp; 528 struct filestat *fsp; 529 { 530 struct inode inode; 531 532 if (!KVM_READ(VTOI(vp), &inode, sizeof (inode))) { 533 dprintf("can't read inode at %p for pid %d", VTOI(vp), Pid); 534 return 0; 535 } 536 fsp->fsid = inode.i_dev & 0xffff; 537 fsp->fileid = (long)inode.i_number; 538 fsp->mode = (mode_t)inode.i_ffs_mode; 539 fsp->size = inode.i_ffs_size; 540 fsp->rdev = inode.i_ffs_rdev; 541 542 return 1; 543 } 544 545 int 546 ext2fs_filestat(vp, fsp) 547 struct vnode *vp; 548 struct filestat *fsp; 549 { 550 struct inode inode; 551 552 if (!KVM_READ(VTOI(vp), &inode, sizeof (inode))) { 553 dprintf("can't read inode at %p for pid %d", VTOI(vp), Pid); 554 return 0; 555 } 556 fsp->fsid = inode.i_dev & 0xffff; 557 fsp->fileid = (long)inode.i_number; 558 fsp->mode = (mode_t)inode.i_e2fs_mode; 559 fsp->size = inode.i_e2fs_size; 560 fsp->rdev = 0; /* XXX */ 561 return 1; 562 } 563 564 int 565 nfs_filestat(vp, fsp) 566 struct vnode *vp; 567 struct filestat *fsp; 568 { 569 struct nfsnode nfsnode; 570 struct vattr va; 571 572 if (!KVM_READ(VTONFS(vp), &nfsnode, sizeof (nfsnode))) { 573 dprintf("can't read nfsnode at %p for pid %d", VTONFS(vp), 574 Pid); 575 return 0; 576 } 577 if (!KVM_READ(nfsnode.n_vattr, &va, sizeof(va))) { 578 dprintf("can't read vnode attributes at %p for pid %d", 579 nfsnode.n_vattr, Pid); 580 return 0; 581 } 582 fsp->fsid = va.va_fsid; 583 fsp->fileid = va.va_fileid; 584 fsp->size = nfsnode.n_size; 585 fsp->rdev = va.va_rdev; 586 fsp->mode = (mode_t)va.va_mode | getftype(vp->v_type); 587 588 return 1; 589 } 590 591 int 592 msdosfs_filestat(vp, fsp) 593 struct vnode *vp; 594 struct filestat *fsp; 595 { 596 struct denode de; 597 struct msdosfsmount mp; 598 599 if (!KVM_READ(VTONFS(vp), &de, sizeof(de))) { 600 dprintf("can't read denode at %p for pid %d", VTONFS(vp), 601 Pid); 602 return 0; 603 } 604 if (!KVM_READ(de.de_pmp, &mp, sizeof(mp))) { 605 dprintf("can't read mount struct at %p for pid %d", de.de_pmp, 606 Pid); 607 return 0; 608 } 609 610 fsp->fsid = de.de_dev & 0xffff; 611 fsp->fileid = 0; /* XXX see msdosfs_vptofh() for more info */ 612 fsp->size = de.de_FileSize; 613 fsp->rdev = 0; /* msdosfs doesn't support device files */ 614 fsp->mode = (0777 & mp.pm_mask) | getftype(vp->v_type); 615 return 1; 616 } 617 618 int 619 layer_filestat(vp, fsp, nvp) 620 struct vnode *vp; 621 struct filestat *fsp; 622 struct vnode **nvp; 623 { 624 struct layer_node layer_node; 625 626 if (!KVM_READ(VTOLAYER(vp), &layer_node, sizeof(layer_node))) { 627 dprintf("can't read layer_node at %p for pid %d", 628 VTOLAYER(vp), Pid); 629 return (0); 630 } 631 *nvp = layer_node.layer_lowervp; 632 return (1); 633 } 634 635 char * 636 getmnton(m) 637 struct mount *m; 638 { 639 static struct mount mount; 640 static struct mtab { 641 struct mtab *next; 642 struct mount *m; 643 char mntonname[MNAMELEN]; 644 } *mhead = NULL; 645 struct mtab *mt; 646 647 for (mt = mhead; mt != NULL; mt = mt->next) 648 if (m == mt->m) 649 return (mt->mntonname); 650 if (!KVM_READ(m, &mount, sizeof(struct mount))) { 651 warnx("can't read mount table at %p", m); 652 return (NULL); 653 } 654 if ((mt = malloc(sizeof (struct mtab))) == NULL) { 655 err(1, "malloc(%u)", (unsigned int)sizeof(struct mtab)); 656 } 657 mt->m = m; 658 memmove(&mt->mntonname[0], &mount.mnt_stat.f_mntonname[0], MNAMELEN); 659 mt->next = mhead; 660 mhead = mt; 661 return (mt->mntonname); 662 } 663 664 #ifdef INET6 665 static const char * 666 inet6_addrstr(p) 667 struct in6_addr *p; 668 { 669 struct sockaddr_in6 sin6; 670 static char hbuf[NI_MAXHOST]; 671 #ifdef NI_WITHSCOPEID 672 const int niflags = NI_NUMERICHOST | NI_WITHSCOPEID; 673 #else 674 const int niflags = NI_NUMERICHOST; 675 #endif 676 677 memset(&sin6, 0, sizeof(sin6)); 678 sin6.sin6_family = AF_INET6; 679 sin6.sin6_len = sizeof(struct sockaddr_in6); 680 sin6.sin6_addr = *p; 681 if (IN6_IS_ADDR_LINKLOCAL(p) && 682 *(u_int16_t *)&sin6.sin6_addr.s6_addr[2] != 0) { 683 sin6.sin6_scope_id = 684 ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]); 685 sin6.sin6_addr.s6_addr[2] = sin6.sin6_addr.s6_addr[3] = 0; 686 } 687 688 if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, 689 hbuf, sizeof(hbuf), NULL, 0, niflags)) 690 return "invalid"; 691 692 return hbuf; 693 } 694 #endif 695 696 void 697 socktrans(sock, i) 698 struct socket *sock; 699 int i; 700 { 701 static char *stypename[] = { 702 "unused", /* 0 */ 703 "stream", /* 1 */ 704 "dgram", /* 2 */ 705 "raw", /* 3 */ 706 "rdm", /* 4 */ 707 "seqpak" /* 5 */ 708 }; 709 #define STYPEMAX 5 710 struct socket so; 711 struct protosw proto; 712 struct domain dom; 713 struct inpcb inpcb; 714 #ifdef INET6 715 struct in6pcb in6pcb; 716 #endif 717 struct unpcb unpcb; 718 int len; 719 char dname[32]; 720 #ifdef INET6 721 char xaddrbuf[NI_MAXHOST + 2]; 722 #endif 723 724 PREFIX(i); 725 726 /* fill in socket */ 727 if (!KVM_READ(sock, &so, sizeof(struct socket))) { 728 dprintf("can't read sock at %p", sock); 729 goto bad; 730 } 731 732 /* fill in protosw entry */ 733 if (!KVM_READ(so.so_proto, &proto, sizeof(struct protosw))) { 734 dprintf("can't read protosw at %p", so.so_proto); 735 goto bad; 736 } 737 738 /* fill in domain */ 739 if (!KVM_READ(proto.pr_domain, &dom, sizeof(struct domain))) { 740 dprintf("can't read domain at %p", proto.pr_domain); 741 goto bad; 742 } 743 744 if ((len = kvm_read(kd, (u_long)dom.dom_name, dname, 745 sizeof(dname) - 1)) != sizeof(dname) -1) { 746 dprintf("can't read domain name at %p", dom.dom_name); 747 dname[0] = '\0'; 748 } 749 else 750 dname[len] = '\0'; 751 752 if ((u_short)so.so_type > STYPEMAX) 753 printf("* %s ?%d", dname, so.so_type); 754 else 755 printf("* %s %s", dname, stypename[so.so_type]); 756 757 /* 758 * protocol specific formatting 759 * 760 * Try to find interesting things to print. For TCP, the interesting 761 * thing is the address of the tcpcb, for UDP and others, just the 762 * inpcb (socket pcb). For UNIX domain, its the address of the socket 763 * pcb and the address of the connected pcb (if connected). Otherwise 764 * just print the protocol number and address of the socket itself. 765 * The idea is not to duplicate netstat, but to make available enough 766 * information for further analysis. 767 */ 768 switch(dom.dom_family) { 769 case AF_INET: 770 getinetproto(proto.pr_protocol); 771 if (proto.pr_protocol == IPPROTO_TCP) { 772 if (so.so_pcb == NULL) 773 break; 774 if (kvm_read(kd, (u_long)so.so_pcb, (char *)&inpcb, 775 sizeof(struct inpcb)) != sizeof(struct inpcb)) { 776 dprintf("can't read inpcb at %p", so.so_pcb); 777 goto bad; 778 } 779 printf(" %lx", (long)inpcb.inp_ppcb); 780 printf(" %s:%d", 781 inpcb.inp_laddr.s_addr == INADDR_ANY ? "*" : 782 inet_ntoa(inpcb.inp_laddr), ntohs(inpcb.inp_lport)); 783 if (inpcb.inp_fport) { 784 printf(" <-> %s:%d", 785 inpcb.inp_faddr.s_addr == INADDR_ANY ? "*" : 786 inet_ntoa(inpcb.inp_faddr), 787 ntohs(inpcb.inp_fport)); 788 } 789 } else if (proto.pr_protocol == IPPROTO_UDP) { 790 if (so.so_pcb == NULL) 791 break; 792 if (kvm_read(kd, (u_long)so.so_pcb, (char *)&inpcb, 793 sizeof(struct inpcb)) != sizeof(struct inpcb)) { 794 dprintf("can't read inpcb at %p", so.so_pcb); 795 goto bad; 796 } 797 printf(" %lx", (long)so.so_pcb); 798 printf(" %s:%d", 799 inpcb.inp_laddr.s_addr == INADDR_ANY ? "*" : 800 inet_ntoa(inpcb.inp_laddr), ntohs(inpcb.inp_lport)); 801 if (inpcb.inp_fport) 802 printf(" <-> %s:%d", 803 inpcb.inp_faddr.s_addr == INADDR_ANY ? "*" : 804 inet_ntoa(inpcb.inp_faddr), 805 ntohs(inpcb.inp_fport)); 806 } else if (so.so_pcb) 807 printf(" %lx", (long)so.so_pcb); 808 break; 809 #ifdef INET6 810 case AF_INET6: 811 getinetproto(proto.pr_protocol); 812 if (proto.pr_protocol == IPPROTO_TCP) { 813 if (so.so_pcb == NULL) 814 break; 815 if (kvm_read(kd, (u_long)so.so_pcb, (char *)&in6pcb, 816 sizeof(struct in6pcb)) != sizeof(struct in6pcb)) { 817 dprintf("can't read in6pcb at %p", so.so_pcb); 818 goto bad; 819 } 820 printf(" %lx", (long)in6pcb.in6p_ppcb); 821 sprintf(xaddrbuf, "[%s]", 822 inet6_addrstr(&in6pcb.in6p_laddr)); 823 printf(" %s:%d", 824 IN6_IS_ADDR_UNSPECIFIED(&in6pcb.in6p_laddr) ? "*" : 825 xaddrbuf, 826 ntohs(in6pcb.in6p_lport)); 827 if (in6pcb.in6p_fport) { 828 sprintf(xaddrbuf, "[%s]", 829 inet6_addrstr(&in6pcb.in6p_faddr)); 830 printf(" <-> %s:%d", 831 IN6_IS_ADDR_UNSPECIFIED(&in6pcb.in6p_faddr) ? "*" : 832 xaddrbuf, 833 ntohs(in6pcb.in6p_fport)); 834 } 835 } else if (proto.pr_protocol == IPPROTO_UDP) { 836 if (so.so_pcb == NULL) 837 break; 838 if (kvm_read(kd, (u_long)so.so_pcb, (char *)&in6pcb, 839 sizeof(struct in6pcb)) != sizeof(struct in6pcb)) { 840 dprintf("can't read inpcb at %p", so.so_pcb); 841 goto bad; 842 } 843 printf(" %lx", (long)so.so_pcb); 844 sprintf(xaddrbuf, "[%s]", 845 inet6_addrstr(&in6pcb.in6p_laddr)); 846 printf(" %s:%d", 847 IN6_IS_ADDR_UNSPECIFIED(&in6pcb.in6p_laddr) ? "*" : 848 xaddrbuf, 849 ntohs(in6pcb.in6p_lport)); 850 if (in6pcb.in6p_fport) { 851 sprintf(xaddrbuf, "[%s]", 852 inet6_addrstr(&in6pcb.in6p_faddr)); 853 printf(" <-> %s:%d", 854 IN6_IS_ADDR_UNSPECIFIED(&in6pcb.in6p_faddr) ? "*" : 855 xaddrbuf, 856 ntohs(in6pcb.in6p_fport)); 857 } 858 } else if (so.so_pcb) 859 printf(" %lx", (long)so.so_pcb); 860 break; 861 #endif 862 case AF_LOCAL: 863 /* print address of pcb and connected pcb */ 864 if (so.so_pcb) { 865 printf(" %lx", (long)so.so_pcb); 866 if (kvm_read(kd, (u_long)so.so_pcb, (char *)&unpcb, 867 sizeof(struct unpcb)) != sizeof(struct unpcb)){ 868 dprintf("can't read unpcb at %p", so.so_pcb); 869 goto bad; 870 } 871 if (unpcb.unp_conn) { 872 char shoconn[4], *cp; 873 874 cp = shoconn; 875 if (!(so.so_state & SS_CANTRCVMORE)) 876 *cp++ = '<'; 877 *cp++ = '-'; 878 if (!(so.so_state & SS_CANTSENDMORE)) 879 *cp++ = '>'; 880 *cp = '\0'; 881 printf(" %s %lx", shoconn, 882 (long)unpcb.unp_conn); 883 } 884 } 885 break; 886 default: 887 /* print protocol number and socket address */ 888 printf(" %d %lx", proto.pr_protocol, (long)sock); 889 } 890 printf("\n"); 891 return; 892 bad: 893 printf("* error\n"); 894 } 895 896 /* 897 * getinetproto -- 898 * print name of protocol number 899 */ 900 void 901 getinetproto(number) 902 int number; 903 { 904 char *cp; 905 906 switch (number) { 907 case IPPROTO_IP: 908 cp = "ip"; break; 909 case IPPROTO_ICMP: 910 cp ="icmp"; break; 911 case IPPROTO_GGP: 912 cp ="ggp"; break; 913 case IPPROTO_TCP: 914 cp ="tcp"; break; 915 case IPPROTO_EGP: 916 cp ="egp"; break; 917 case IPPROTO_PUP: 918 cp ="pup"; break; 919 case IPPROTO_UDP: 920 cp ="udp"; break; 921 case IPPROTO_IDP: 922 cp ="idp"; break; 923 case IPPROTO_RAW: 924 cp ="raw"; break; 925 case IPPROTO_ICMPV6: 926 cp ="icmp6"; break; 927 default: 928 printf(" %d", number); 929 return; 930 } 931 printf(" %s", cp); 932 } 933 934 int 935 getfname(filename) 936 char *filename; 937 { 938 struct stat statbuf; 939 DEVS *cur; 940 941 if (stat(filename, &statbuf)) { 942 warn("stat(%s)", filename); 943 return(0); 944 } 945 if ((cur = malloc(sizeof(DEVS))) == NULL) { 946 err(1, "malloc(%u)", (unsigned int)sizeof(DEVS)); 947 } 948 cur->next = devs; 949 devs = cur; 950 951 cur->ino = statbuf.st_ino; 952 cur->fsid = statbuf.st_dev & 0xffff; 953 cur->name = filename; 954 return(1); 955 } 956 957 mode_t 958 getftype(v_type) 959 enum vtype v_type; 960 { 961 mode_t ftype; 962 963 switch (v_type) { 964 case VREG: 965 ftype = S_IFREG; 966 break; 967 case VDIR: 968 ftype = S_IFDIR; 969 break; 970 case VBLK: 971 ftype = S_IFBLK; 972 break; 973 case VCHR: 974 ftype = S_IFCHR; 975 break; 976 case VLNK: 977 ftype = S_IFLNK; 978 break; 979 case VSOCK: 980 ftype = S_IFSOCK; 981 break; 982 case VFIFO: 983 ftype = S_IFIFO; 984 break; 985 default: 986 ftype = 0; 987 break; 988 }; 989 990 return ftype; 991 } 992 993 void 994 usage() 995 { 996 errx(1, 997 "usage: fstat [-fnv] [-p pid] [-u user] [-N system] [-M core] [file ...]\n"); 998 } 999
Indexes created Sun Sep 21 16:09:51 GMT 2025