fstat.c revision 1.41
1 /* $NetBSD: fstat.c,v 1.41 2000/02/04 11:02:00 jdolecek 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 1.41 2000/02/04 11:02:00 jdolecek 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 85 #include <net/route.h> 86 #include <netinet/in.h> 87 #include <netinet/in_systm.h> 88 #include <netinet/ip.h> 89 #include <netinet/in_pcb.h> 90 91 #ifdef INET6 92 #include <netinet/ip6.h> 93 #include <netinet6/ip6_var.h> 94 #include <netinet6/in6_pcb.h> 95 #endif 96 97 #include <netdb.h> 98 #include <arpa/inet.h> 99 100 #include <ctype.h> 101 #include <errno.h> 102 #include <kvm.h> 103 #include <limits.h> 104 #include <nlist.h> 105 #include <paths.h> 106 #include <pwd.h> 107 #include <stdio.h> 108 #include <stdlib.h> 109 #include <string.h> 110 #include <unistd.h> 111 #include <err.h> 112 113 #include "fstat.h" 114 115 #define TEXT -1 116 #define CDIR -2 117 #define RDIR -3 118 #define TRACE -4 119 120 typedef struct devs { 121 struct devs *next; 122 long fsid; 123 ino_t ino; 124 char *name; 125 } DEVS; 126 DEVS *devs; 127 128 int fsflg, /* show files on same filesystem as file(s) argument */ 129 pflg, /* show files open by a particular pid */ 130 uflg; /* show files open by a particular (effective) user */ 131 int checkfile; /* true if restricting to particular files or filesystems */ 132 int nflg; /* (numerical) display f.s. and rdev as dev_t */ 133 int vflg; /* display errors in locating kernel data objects etc... */ 134 135 struct file **ofiles; /* buffer of pointers to file structures */ 136 int maxfiles; 137 #define ALLOC_OFILES(d) \ 138 if ((d) > maxfiles) { \ 139 free(ofiles); \ 140 ofiles = malloc((d) * sizeof(struct file *)); \ 141 if (ofiles == NULL) { \ 142 err(1, "malloc(%u)", (d) * \ 143 (unsigned int)sizeof(struct file *)); \ 144 } \ 145 maxfiles = (d); \ 146 } 147 148 kvm_t *kd; 149 150 void dofiles __P((struct kinfo_proc *)); 151 int ext2fs_filestat __P((struct vnode *, struct filestat *)); 152 int getfname __P((char *)); 153 void getinetproto __P((int)); 154 char *getmnton __P((struct mount *)); 155 int main __P((int, char **)); 156 int msdosfs_filestat __P((struct vnode *, struct filestat *)); 157 int nfs_filestat __P((struct vnode *, struct filestat *)); 158 #ifdef INET6 159 static const char *inet6_addrstr __P((struct in6_addr *)); 160 #endif 161 void socktrans __P((struct socket *, int)); 162 int ufs_filestat __P((struct vnode *, struct filestat *)); 163 void usage __P((void)); 164 void vtrans __P((struct vnode *, int, int)); 165 166 int 167 main(argc, argv) 168 int argc; 169 char **argv; 170 { 171 struct passwd *passwd; 172 struct kinfo_proc *p, *plast; 173 int arg, ch, what; 174 char *memf, *nlistf; 175 char buf[_POSIX2_LINE_MAX]; 176 int cnt; 177 gid_t egid = getegid(); 178 179 (void)setegid(getgid()); 180 arg = 0; 181 what = KERN_PROC_ALL; 182 nlistf = memf = NULL; 183 while ((ch = getopt(argc, argv, "fnp:u:vN:M:")) != -1) 184 switch((char)ch) { 185 case 'f': 186 fsflg = 1; 187 break; 188 case 'M': 189 memf = optarg; 190 break; 191 case 'N': 192 nlistf = optarg; 193 break; 194 case 'n': 195 nflg = 1; 196 break; 197 case 'p': 198 if (pflg++) 199 usage(); 200 if (!isdigit(*optarg)) { 201 warnx("-p requires a process id"); 202 usage(); 203 } 204 what = KERN_PROC_PID; 205 arg = atoi(optarg); 206 break; 207 case 'u': 208 if (uflg++) 209 usage(); 210 if (!(passwd = getpwnam(optarg))) { 211 errx(1, "%s: unknown uid", optarg); 212 } 213 what = KERN_PROC_UID; 214 arg = passwd->pw_uid; 215 break; 216 case 'v': 217 vflg = 1; 218 break; 219 case '?': 220 default: 221 usage(); 222 } 223 224 if (*(argv += optind)) { 225 for (; *argv; ++argv) { 226 if (getfname(*argv)) 227 checkfile = 1; 228 } 229 if (!checkfile) /* file(s) specified, but none accessable */ 230 exit(1); 231 } 232 233 ALLOC_OFILES(256); /* reserve space for file pointers */ 234 235 if (fsflg && !checkfile) { 236 /* -f with no files means use wd */ 237 if (getfname(".") == 0) 238 exit(1); 239 checkfile = 1; 240 } 241 242 /* 243 * Discard setgid privileges. If not the running kernel, we toss 244 * them away totally so that bad guys can't print interesting stuff 245 * from kernel memory, otherwise switch back to kmem for the 246 * duration of the kvm_openfiles() call. 247 */ 248 if (nlistf != NULL || memf != NULL) 249 (void)setgid(getgid()); 250 else 251 (void)setegid(egid); 252 253 if ((kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, buf)) == NULL) 254 errx(1, "%s", buf); 255 256 /* get rid of it now anyway */ 257 if (nlistf == NULL && memf == NULL) 258 (void)setgid(getgid()); 259 260 if ((p = kvm_getprocs(kd, what, arg, &cnt)) == NULL) { 261 errx(1, "%s", kvm_geterr(kd)); 262 } 263 if (nflg) 264 printf("%s", 265 "USER CMD PID FD DEV INUM MODE SZ|DV R/W"); 266 else 267 printf("%s", 268 "USER CMD PID FD MOUNT INUM MODE SZ|DV R/W"); 269 if (checkfile && fsflg == 0) 270 printf(" NAME\n"); 271 else 272 putchar('\n'); 273 274 for (plast = &p[cnt]; p < plast; ++p) { 275 if (p->kp_proc.p_stat == SZOMB) 276 continue; 277 dofiles(p); 278 } 279 exit(0); 280 } 281 282 const char *Uname, *Comm; 283 pid_t Pid; 284 285 #define PREFIX(i) printf("%-8.8s %-10s %5d", Uname, Comm, Pid); \ 286 switch(i) { \ 287 case TEXT: \ 288 printf(" text"); \ 289 break; \ 290 case CDIR: \ 291 printf(" wd"); \ 292 break; \ 293 case RDIR: \ 294 printf(" root"); \ 295 break; \ 296 case TRACE: \ 297 printf(" tr"); \ 298 break; \ 299 default: \ 300 printf(" %4d", i); \ 301 break; \ 302 } 303 304 /* 305 * print open files attributed to this process 306 */ 307 void 308 dofiles(kp) 309 struct kinfo_proc *kp; 310 { 311 int i; 312 struct file file; 313 struct filedesc0 filed0; 314 #define filed filed0.fd_fd 315 struct cwdinfo cwdi; 316 struct proc *p = &kp->kp_proc; 317 struct eproc *ep = &kp->kp_eproc; 318 319 Uname = user_from_uid(ep->e_ucred.cr_uid, 0); 320 Pid = p->p_pid; 321 Comm = p->p_comm; 322 323 if (p->p_fd == NULL || p->p_cwdi == NULL) 324 return; 325 if (!KVM_READ(p->p_fd, &filed0, sizeof (filed0))) { 326 warnx("can't read filedesc at %p for pid %d", p->p_fd, Pid); 327 return; 328 } 329 if (!KVM_READ(p->p_cwdi, &cwdi, sizeof(cwdi))) { 330 warnx("can't read cwdinfo at %p for pid %d", p->p_cwdi, Pid); 331 return; 332 } 333 if (filed.fd_nfiles < 0 || filed.fd_lastfile >= filed.fd_nfiles || 334 filed.fd_freefile > filed.fd_lastfile + 1) { 335 dprintf("filedesc corrupted at %p for pid %d", p->p_fd, Pid); 336 return; 337 } 338 /* 339 * root directory vnode, if one 340 */ 341 if (cwdi.cwdi_rdir) 342 vtrans(cwdi.cwdi_rdir, RDIR, FREAD); 343 /* 344 * current working directory vnode 345 */ 346 vtrans(cwdi.cwdi_cdir, CDIR, FREAD); 347 /* 348 * ktrace vnode, if one 349 */ 350 if (p->p_tracep) 351 vtrans(p->p_tracep, TRACE, FREAD|FWRITE); 352 /* 353 * open files 354 */ 355 #define FPSIZE (sizeof (struct file *)) 356 ALLOC_OFILES(filed.fd_lastfile+1); 357 if (filed.fd_nfiles > NDFILE) { 358 if (!KVM_READ(filed.fd_ofiles, ofiles, 359 (filed.fd_lastfile+1) * FPSIZE)) { 360 dprintf("can't read file structures at %p for pid %d", 361 filed.fd_ofiles, Pid); 362 return; 363 } 364 } else 365 memmove(ofiles, filed0.fd_dfiles, 366 (filed.fd_lastfile+1) * FPSIZE); 367 for (i = 0; i <= filed.fd_lastfile; i++) { 368 if (ofiles[i] == NULL) 369 continue; 370 if (!KVM_READ(ofiles[i], &file, sizeof (struct file))) { 371 dprintf("can't read file %d at %p for pid %d", 372 i, ofiles[i], Pid); 373 continue; 374 } 375 if (file.f_type == DTYPE_VNODE) 376 vtrans((struct vnode *)file.f_data, i, file.f_flag); 377 else if (file.f_type == DTYPE_SOCKET) { 378 if (checkfile == 0) 379 socktrans((struct socket *)file.f_data, i); 380 } 381 else { 382 dprintf("unknown file type %d for file %d of pid %d", 383 file.f_type, i, Pid); 384 } 385 } 386 } 387 388 void 389 vtrans(vp, i, flag) 390 struct vnode *vp; 391 int i; 392 int flag; 393 { 394 struct vnode vn; 395 struct filestat fst; 396 char mode[15], rw[3]; 397 char *badtype = NULL, *filename; 398 399 filename = badtype = NULL; 400 if (!KVM_READ(vp, &vn, sizeof (struct vnode))) { 401 dprintf("can't read vnode at %p for pid %d", vp, Pid); 402 return; 403 } 404 if (vn.v_type == VNON || vn.v_tag == VT_NON) 405 badtype = "none"; 406 else if (vn.v_type == VBAD) 407 badtype = "bad"; 408 else 409 switch (vn.v_tag) { 410 case VT_UFS: 411 if (!ufs_filestat(&vn, &fst)) 412 badtype = "error"; 413 break; 414 case VT_MFS: 415 if (!ufs_filestat(&vn, &fst)) 416 badtype = "error"; 417 break; 418 case VT_MSDOSFS: 419 if (!msdosfs_filestat(&vn, &fst)) 420 badtype = "error"; 421 break; 422 case VT_NFS: 423 if (!nfs_filestat(&vn, &fst)) 424 badtype = "error"; 425 break; 426 case VT_EXT2FS: 427 if (!ext2fs_filestat(&vn, &fst)) 428 badtype = "error"; 429 break; 430 case VT_ISOFS: 431 if (!isofs_filestat(&vn, &fst)) 432 badtype = "error"; 433 break; 434 case VT_NTFS: 435 if (!ntfs_filestat(&vn, &fst)) 436 badtype = "error"; 437 break; 438 default: { 439 static char unknown[10]; 440 (void)snprintf(badtype = unknown, sizeof unknown, 441 "?(%x)", vn.v_tag); 442 break;; 443 } 444 } 445 if (checkfile) { 446 int fsmatch = 0; 447 DEVS *d; 448 449 if (badtype) 450 return; 451 for (d = devs; d != NULL; d = d->next) 452 if (d->fsid == fst.fsid) { 453 fsmatch = 1; 454 if (d->ino == fst.fileid) { 455 filename = d->name; 456 break; 457 } 458 } 459 if (fsmatch == 0 || (filename == NULL && fsflg == 0)) 460 return; 461 } 462 PREFIX(i); 463 if (badtype) { 464 (void)printf(" - - %10s -\n", badtype); 465 return; 466 } 467 if (nflg) 468 (void)printf(" %2d,%-2d", major(fst.fsid), minor(fst.fsid)); 469 else 470 (void)printf(" %-8s", getmnton(vn.v_mount)); 471 if (nflg) 472 (void)snprintf(mode, sizeof mode, "%o", fst.mode); 473 else 474 strmode(fst.mode, mode); 475 (void)printf(" %6ld %10s", (long)fst.fileid, mode); 476 switch (vn.v_type) { 477 case VBLK: 478 case VCHR: { 479 char *name; 480 481 if (nflg || ((name = devname(fst.rdev, vn.v_type == VCHR ? 482 S_IFCHR : S_IFBLK)) == NULL)) 483 printf(" %2d,%-2d", major(fst.rdev), minor(fst.rdev)); 484 else 485 printf(" %6s", name); 486 break; 487 } 488 default: 489 printf(" %6qd", (long long)fst.size); 490 } 491 rw[0] = '\0'; 492 if (flag & FREAD) 493 strcat(rw, "r"); 494 if (flag & FWRITE) 495 strcat(rw, "w"); 496 printf(" %-2s", rw); 497 if (filename && !fsflg) 498 printf(" %s", filename); 499 putchar('\n'); 500 } 501 502 int 503 ufs_filestat(vp, fsp) 504 struct vnode *vp; 505 struct filestat *fsp; 506 { 507 struct inode inode; 508 509 if (!KVM_READ(VTOI(vp), &inode, sizeof (inode))) { 510 dprintf("can't read inode at %p for pid %d", VTOI(vp), Pid); 511 return 0; 512 } 513 fsp->fsid = inode.i_dev & 0xffff; 514 fsp->fileid = (long)inode.i_number; 515 fsp->mode = (mode_t)inode.i_ffs_mode; 516 fsp->size = inode.i_ffs_size; 517 fsp->rdev = inode.i_ffs_rdev; 518 519 return 1; 520 } 521 522 int 523 ext2fs_filestat(vp, fsp) 524 struct vnode *vp; 525 struct filestat *fsp; 526 { 527 struct inode inode; 528 529 if (!KVM_READ(VTOI(vp), &inode, sizeof (inode))) { 530 dprintf("can't read inode at %p for pid %d", VTOI(vp), Pid); 531 return 0; 532 } 533 fsp->fsid = inode.i_dev & 0xffff; 534 fsp->fileid = (long)inode.i_number; 535 fsp->mode = (mode_t)inode.i_e2fs_mode; 536 fsp->size = inode.i_e2fs_size; 537 fsp->rdev = 0; /* XXX */ 538 return 1; 539 } 540 541 int 542 nfs_filestat(vp, fsp) 543 struct vnode *vp; 544 struct filestat *fsp; 545 { 546 struct nfsnode nfsnode; 547 struct vattr va; 548 549 if (!KVM_READ(VTONFS(vp), &nfsnode, sizeof (nfsnode))) { 550 dprintf("can't read nfsnode at %p for pid %d", VTONFS(vp), 551 Pid); 552 return 0; 553 } 554 if (!KVM_READ(nfsnode.n_vattr, &va, sizeof(va))) { 555 dprintf("can't read vnode attributes at %p for pid %d", 556 nfsnode.n_vattr, Pid); 557 return 0; 558 } 559 fsp->fsid = va.va_fsid; 560 fsp->fileid = va.va_fileid; 561 fsp->size = nfsnode.n_size; 562 fsp->rdev = va.va_rdev; 563 fsp->mode = (mode_t)va.va_mode | getftype(vp->v_type); 564 565 return 1; 566 } 567 568 int 569 msdosfs_filestat(vp, fsp) 570 struct vnode *vp; 571 struct filestat *fsp; 572 { 573 struct denode de; 574 struct msdosfsmount mp; 575 576 if (!KVM_READ(VTONFS(vp), &de, sizeof(de))) { 577 dprintf("can't read denode at %p for pid %d", VTONFS(vp), 578 Pid); 579 return 0; 580 } 581 if (!KVM_READ(de.de_pmp, &mp, sizeof(mp))) { 582 dprintf("can't read mount struct at %p for pid %d", de.de_pmp, 583 Pid); 584 return 0; 585 } 586 587 fsp->fsid = de.de_dev & 0xffff; 588 fsp->fileid = 0; /* XXX see msdosfs_vptofh() for more info */ 589 fsp->size = de.de_FileSize; 590 fsp->rdev = 0; /* msdosfs doesn't support device files */ 591 fsp->mode = (0777 & mp.pm_mask) | getftype(vp->v_type); 592 return 1; 593 } 594 595 char * 596 getmnton(m) 597 struct mount *m; 598 { 599 static struct mount mount; 600 static struct mtab { 601 struct mtab *next; 602 struct mount *m; 603 char mntonname[MNAMELEN]; 604 } *mhead = NULL; 605 struct mtab *mt; 606 607 for (mt = mhead; mt != NULL; mt = mt->next) 608 if (m == mt->m) 609 return (mt->mntonname); 610 if (!KVM_READ(m, &mount, sizeof(struct mount))) { 611 warnx("can't read mount table at %p", m); 612 return (NULL); 613 } 614 if ((mt = malloc(sizeof (struct mtab))) == NULL) { 615 err(1, "malloc(%u)", (unsigned int)sizeof(struct mtab)); 616 } 617 mt->m = m; 618 memmove(&mt->mntonname[0], &mount.mnt_stat.f_mntonname[0], MNAMELEN); 619 mt->next = mhead; 620 mhead = mt; 621 return (mt->mntonname); 622 } 623 624 #ifdef INET6 625 static const char * 626 inet6_addrstr(p) 627 struct in6_addr *p; 628 { 629 struct sockaddr_in6 sin6; 630 static char hbuf[NI_MAXHOST]; 631 #ifdef NI_WITHSCOPEID 632 const int niflags = NI_NUMERICHOST | NI_WITHSCOPEID; 633 #else 634 const int niflags = NI_NUMERICHOST; 635 #endif 636 637 memset(&sin6, 0, sizeof(sin6)); 638 sin6.sin6_family = AF_INET6; 639 sin6.sin6_len = sizeof(struct sockaddr_in6); 640 sin6.sin6_addr = *p; 641 if (IN6_IS_ADDR_LINKLOCAL(p) && 642 *(u_int16_t *)&sin6.sin6_addr.s6_addr[2] != 0) { 643 sin6.sin6_scope_id = 644 ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]); 645 sin6.sin6_addr.s6_addr[2] = sin6.sin6_addr.s6_addr[3] = 0; 646 } 647 648 if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, 649 hbuf, sizeof(hbuf), NULL, 0, niflags)) 650 return "invalid"; 651 652 return hbuf; 653 } 654 #endif 655 656 void 657 socktrans(sock, i) 658 struct socket *sock; 659 int i; 660 { 661 static char *stypename[] = { 662 "unused", /* 0 */ 663 "stream", /* 1 */ 664 "dgram", /* 2 */ 665 "raw", /* 3 */ 666 "rdm", /* 4 */ 667 "seqpak" /* 5 */ 668 }; 669 #define STYPEMAX 5 670 struct socket so; 671 struct protosw proto; 672 struct domain dom; 673 struct inpcb inpcb; 674 #ifdef INET6 675 struct in6pcb in6pcb; 676 #endif 677 struct unpcb unpcb; 678 int len; 679 char dname[32]; 680 #ifdef INET6 681 char xaddrbuf[NI_MAXHOST + 2]; 682 #endif 683 684 PREFIX(i); 685 686 /* fill in socket */ 687 if (!KVM_READ(sock, &so, sizeof(struct socket))) { 688 dprintf("can't read sock at %p", sock); 689 goto bad; 690 } 691 692 /* fill in protosw entry */ 693 if (!KVM_READ(so.so_proto, &proto, sizeof(struct protosw))) { 694 dprintf("can't read protosw at %p", so.so_proto); 695 goto bad; 696 } 697 698 /* fill in domain */ 699 if (!KVM_READ(proto.pr_domain, &dom, sizeof(struct domain))) { 700 dprintf("can't read domain at %p", proto.pr_domain); 701 goto bad; 702 } 703 704 if ((len = kvm_read(kd, (u_long)dom.dom_name, dname, 705 sizeof(dname) - 1)) != sizeof(dname) -1) { 706 dprintf("can't read domain name at %p", dom.dom_name); 707 dname[0] = '\0'; 708 } 709 else 710 dname[len] = '\0'; 711 712 if ((u_short)so.so_type > STYPEMAX) 713 printf("* %s ?%d", dname, so.so_type); 714 else 715 printf("* %s %s", dname, stypename[so.so_type]); 716 717 /* 718 * protocol specific formatting 719 * 720 * Try to find interesting things to print. For TCP, the interesting 721 * thing is the address of the tcpcb, for UDP and others, just the 722 * inpcb (socket pcb). For UNIX domain, its the address of the socket 723 * pcb and the address of the connected pcb (if connected). Otherwise 724 * just print the protocol number and address of the socket itself. 725 * The idea is not to duplicate netstat, but to make available enough 726 * information for further analysis. 727 */ 728 switch(dom.dom_family) { 729 case AF_INET: 730 getinetproto(proto.pr_protocol); 731 if (proto.pr_protocol == IPPROTO_TCP) { 732 if (so.so_pcb == NULL) 733 break; 734 if (kvm_read(kd, (u_long)so.so_pcb, (char *)&inpcb, 735 sizeof(struct inpcb)) != sizeof(struct inpcb)) { 736 dprintf("can't read inpcb at %p", so.so_pcb); 737 goto bad; 738 } 739 printf(" %lx", (long)inpcb.inp_ppcb); 740 printf(" %s:%d", 741 inpcb.inp_laddr.s_addr == INADDR_ANY ? "*" : 742 inet_ntoa(inpcb.inp_laddr), ntohs(inpcb.inp_lport)); 743 if (inpcb.inp_fport) { 744 printf(" <-> %s:%d", 745 inpcb.inp_faddr.s_addr == INADDR_ANY ? "*" : 746 inet_ntoa(inpcb.inp_faddr), 747 ntohs(inpcb.inp_fport)); 748 } 749 } else if (proto.pr_protocol == IPPROTO_UDP) { 750 if (so.so_pcb == NULL) 751 break; 752 if (kvm_read(kd, (u_long)so.so_pcb, (char *)&inpcb, 753 sizeof(struct inpcb)) != sizeof(struct inpcb)) { 754 dprintf("can't read inpcb at %p", so.so_pcb); 755 goto bad; 756 } 757 printf(" %lx", (long)so.so_pcb); 758 printf(" %s:%d", 759 inpcb.inp_laddr.s_addr == INADDR_ANY ? "*" : 760 inet_ntoa(inpcb.inp_laddr), ntohs(inpcb.inp_lport)); 761 if (inpcb.inp_fport) 762 printf(" <-> %s:%d", 763 inpcb.inp_faddr.s_addr == INADDR_ANY ? "*" : 764 inet_ntoa(inpcb.inp_faddr), 765 ntohs(inpcb.inp_fport)); 766 } else if (so.so_pcb) 767 printf(" %lx", (long)so.so_pcb); 768 break; 769 #ifdef INET6 770 case AF_INET6: 771 getinetproto(proto.pr_protocol); 772 if (proto.pr_protocol == IPPROTO_TCP) { 773 if (so.so_pcb == NULL) 774 break; 775 if (kvm_read(kd, (u_long)so.so_pcb, (char *)&in6pcb, 776 sizeof(struct in6pcb)) != sizeof(struct in6pcb)) { 777 dprintf("can't read in6pcb at %p", so.so_pcb); 778 goto bad; 779 } 780 printf(" %lx", (long)in6pcb.in6p_ppcb); 781 sprintf(xaddrbuf, "[%s]", 782 inet6_addrstr(&in6pcb.in6p_laddr)); 783 printf(" %s:%d", 784 IN6_IS_ADDR_UNSPECIFIED(&in6pcb.in6p_laddr) ? "*" : 785 xaddrbuf, 786 ntohs(in6pcb.in6p_lport)); 787 if (in6pcb.in6p_fport) { 788 sprintf(xaddrbuf, "[%s]", 789 inet6_addrstr(&in6pcb.in6p_faddr)); 790 printf(" <-> %s:%d", 791 IN6_IS_ADDR_UNSPECIFIED(&in6pcb.in6p_faddr) ? "*" : 792 xaddrbuf, 793 ntohs(in6pcb.in6p_fport)); 794 } 795 } else if (proto.pr_protocol == IPPROTO_UDP) { 796 if (so.so_pcb == NULL) 797 break; 798 if (kvm_read(kd, (u_long)so.so_pcb, (char *)&in6pcb, 799 sizeof(struct in6pcb)) != sizeof(struct in6pcb)) { 800 dprintf("can't read inpcb at %p", so.so_pcb); 801 goto bad; 802 } 803 printf(" %lx", (long)so.so_pcb); 804 sprintf(xaddrbuf, "[%s]", 805 inet6_addrstr(&in6pcb.in6p_laddr)); 806 printf(" %s:%d", 807 IN6_IS_ADDR_UNSPECIFIED(&in6pcb.in6p_laddr) ? "*" : 808 xaddrbuf, 809 ntohs(in6pcb.in6p_lport)); 810 if (in6pcb.in6p_fport) { 811 sprintf(xaddrbuf, "[%s]", 812 inet6_addrstr(&in6pcb.in6p_faddr)); 813 printf(" <-> %s:%d", 814 IN6_IS_ADDR_UNSPECIFIED(&in6pcb.in6p_faddr) ? "*" : 815 xaddrbuf, 816 ntohs(in6pcb.in6p_fport)); 817 } 818 } else if (so.so_pcb) 819 printf(" %lx", (long)so.so_pcb); 820 break; 821 #endif 822 case AF_LOCAL: 823 /* print address of pcb and connected pcb */ 824 if (so.so_pcb) { 825 printf(" %lx", (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("can't read unpcb at %p", so.so_pcb); 829 goto bad; 830 } 831 if (unpcb.unp_conn) { 832 char shoconn[4], *cp; 833 834 cp = shoconn; 835 if (!(so.so_state & SS_CANTRCVMORE)) 836 *cp++ = '<'; 837 *cp++ = '-'; 838 if (!(so.so_state & SS_CANTSENDMORE)) 839 *cp++ = '>'; 840 *cp = '\0'; 841 printf(" %s %lx", shoconn, 842 (long)unpcb.unp_conn); 843 } 844 } 845 break; 846 default: 847 /* print protocol number and socket address */ 848 printf(" %d %lx", proto.pr_protocol, (long)sock); 849 } 850 printf("\n"); 851 return; 852 bad: 853 printf("* error\n"); 854 } 855 856 /* 857 * getinetproto -- 858 * print name of protocol number 859 */ 860 void 861 getinetproto(number) 862 int number; 863 { 864 char *cp; 865 866 switch (number) { 867 case IPPROTO_IP: 868 cp = "ip"; break; 869 case IPPROTO_ICMP: 870 cp ="icmp"; break; 871 case IPPROTO_GGP: 872 cp ="ggp"; break; 873 case IPPROTO_TCP: 874 cp ="tcp"; break; 875 case IPPROTO_EGP: 876 cp ="egp"; break; 877 case IPPROTO_PUP: 878 cp ="pup"; break; 879 case IPPROTO_UDP: 880 cp ="udp"; break; 881 case IPPROTO_IDP: 882 cp ="idp"; break; 883 case IPPROTO_RAW: 884 cp ="raw"; break; 885 case IPPROTO_ICMPV6: 886 cp ="icmp6"; break; 887 default: 888 printf(" %d", number); 889 return; 890 } 891 printf(" %s", cp); 892 } 893 894 int 895 getfname(filename) 896 char *filename; 897 { 898 struct stat statbuf; 899 DEVS *cur; 900 901 if (stat(filename, &statbuf)) { 902 warn("stat(%s)", filename); 903 return(0); 904 } 905 if ((cur = malloc(sizeof(DEVS))) == NULL) { 906 err(1, "malloc(%u)", (unsigned int)sizeof(DEVS)); 907 } 908 cur->next = devs; 909 devs = cur; 910 911 cur->ino = statbuf.st_ino; 912 cur->fsid = statbuf.st_dev & 0xffff; 913 cur->name = filename; 914 return(1); 915 } 916 917 mode_t 918 getftype(v_type) 919 enum vtype v_type; 920 { 921 mode_t ftype; 922 923 switch (v_type) { 924 case VREG: 925 ftype = S_IFREG; 926 break; 927 case VDIR: 928 ftype = S_IFDIR; 929 break; 930 case VBLK: 931 ftype = S_IFBLK; 932 break; 933 case VCHR: 934 ftype = S_IFCHR; 935 break; 936 case VLNK: 937 ftype = S_IFLNK; 938 break; 939 case VSOCK: 940 ftype = S_IFSOCK; 941 break; 942 case VFIFO: 943 ftype = S_IFIFO; 944 break; 945 default: 946 ftype = 0; 947 break; 948 }; 949 950 return ftype; 951 } 952 953 void 954 usage() 955 { 956 errx(1, 957 "usage: fstat [-fnv] [-p pid] [-u user] [-N system] [-M core] [file ...]\n"); 958 } 959
Indexes created Tue Sep 23 07:09:52 GMT 2025