fstat.c revision 1.56
1 /* $NetBSD: fstat.c,v 1.56 2002/10/23 22:37:11 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 1.56 2002/10/23 22:37:11 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 #include <sys/pipe.h> 64 #define _KERNEL 65 #include <sys/file.h> 66 #include <ufs/ufs/inode.h> 67 #undef _KERNEL 68 #define _KERNEL 69 #include <sys/mount.h> 70 #undef _KERNEL 71 #define NFS 72 #include <nfs/nfsproto.h> 73 #include <nfs/rpcv2.h> 74 #include <nfs/nfs.h> 75 #include <nfs/nfsnode.h> 76 #undef NFS 77 #include <msdosfs/denode.h> 78 #include <msdosfs/bpb.h> 79 #define _KERNEL 80 #include <msdosfs/msdosfsmount.h> 81 #undef _KERNEL 82 #define _KERNEL 83 #include <miscfs/genfs/layer.h> 84 #undef _KERNEL 85 86 #include <net/route.h> 87 #include <netinet/in.h> 88 #include <netinet/in_systm.h> 89 #include <netinet/ip.h> 90 #include <netinet/in_pcb.h> 91 92 #ifdef INET6 93 #include <netinet/ip6.h> 94 #include <netinet6/ip6_var.h> 95 #include <netinet6/in6_pcb.h> 96 #endif 97 98 #include <netdb.h> 99 #include <arpa/inet.h> 100 101 #include <ctype.h> 102 #include <errno.h> 103 #include <kvm.h> 104 #include <limits.h> 105 #include <nlist.h> 106 #include <paths.h> 107 #include <pwd.h> 108 #include <stdio.h> 109 #include <stdlib.h> 110 #include <string.h> 111 #include <unistd.h> 112 #include <err.h> 113 114 #include "fstat.h" 115 116 #define TEXT -1 117 #define CDIR -2 118 #define RDIR -3 119 #define TRACE -4 120 121 typedef struct devs { 122 struct devs *next; 123 long fsid; 124 ino_t ino; 125 char *name; 126 } DEVS; 127 DEVS *devs; 128 129 int fsflg, /* show files on same filesystem as file(s) argument */ 130 pflg, /* show files open by a particular pid */ 131 uflg; /* show files open by a particular (effective) user */ 132 int checkfile; /* true if restricting to particular files or filesystems */ 133 int nflg; /* (numerical) display f.s. and rdev as dev_t */ 134 int vflg; /* display errors in locating kernel data objects etc... */ 135 136 struct file **ofiles; /* buffer of pointers to file structures */ 137 int maxfiles; 138 #define ALLOC_OFILES(d) \ 139 if ((d) > maxfiles) { \ 140 free(ofiles); \ 141 ofiles = malloc((d) * sizeof(struct file *)); \ 142 if (ofiles == NULL) { \ 143 err(1, "malloc(%u)", (d) * \ 144 (unsigned int)sizeof(struct file *)); \ 145 } \ 146 maxfiles = (d); \ 147 } 148 149 kvm_t *kd; 150 151 void dofiles __P((struct kinfo_proc *)); 152 int ext2fs_filestat __P((struct vnode *, struct filestat *)); 153 int getfname __P((char *)); 154 void getinetproto __P((int)); 155 char *getmnton __P((struct mount *)); 156 char *layer_filestat __P((struct vnode *, struct filestat *)); 157 int main __P((int, char **)); 158 int msdosfs_filestat __P((struct vnode *, struct filestat *)); 159 int nfs_filestat __P((struct vnode *, struct filestat *)); 160 #ifdef INET6 161 static const char *inet6_addrstr __P((struct in6_addr *)); 162 #endif 163 void socktrans __P((struct socket *, int)); 164 void kqueuetrans __P((void *, int)); 165 int ufs_filestat __P((struct vnode *, struct filestat *)); 166 void usage __P((void)); 167 char *vfilestat __P((struct vnode *, struct filestat *)); 168 void vtrans __P((struct vnode *, int, int)); 169 void ftrans __P((struct file *, int)); 170 void ptrans __P((struct file *, struct pipe *, 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 accessible */ 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 switch (file.f_type) { 392 case DTYPE_VNODE: 393 vtrans((struct vnode *)file.f_data, i, file.f_flag); 394 break; 395 case DTYPE_SOCKET: 396 if (checkfile == 0) 397 socktrans((struct socket *)file.f_data, i); 398 break; 399 case DTYPE_PIPE: 400 if (checkfile == 0) 401 ptrans(&file, (struct pipe *)file.f_data, i); 402 break; 403 case DTYPE_KQUEUE: 404 if (checkfile == 0) 405 kqueuetrans((void *)file.f_data, i); 406 break; 407 default: 408 dprintf("unknown file type %d for file %d of pid %d", 409 file.f_type, i, Pid); 410 break; 411 } 412 } 413 414 char * 415 vfilestat(vp, fsp) 416 struct vnode *vp; 417 struct filestat *fsp; 418 { 419 char *badtype = NULL; 420 421 if (vp->v_type == VNON || vp->v_tag == VT_NON) 422 badtype = "none"; 423 else if (vp->v_type == VBAD) 424 badtype = "bad"; 425 else 426 switch (vp->v_tag) { 427 case VT_UFS: 428 if (!ufs_filestat(vp, fsp)) 429 badtype = "error"; 430 break; 431 case VT_MFS: 432 if (!ufs_filestat(vp, fsp)) 433 badtype = "error"; 434 break; 435 case VT_MSDOSFS: 436 if (!msdosfs_filestat(vp, fsp)) 437 badtype = "error"; 438 break; 439 case VT_NFS: 440 if (!nfs_filestat(vp, fsp)) 441 badtype = "error"; 442 break; 443 case VT_EXT2FS: 444 if (!ext2fs_filestat(vp, fsp)) 445 badtype = "error"; 446 break; 447 case VT_ISOFS: 448 if (!isofs_filestat(vp, fsp)) 449 badtype = "error"; 450 break; 451 case VT_NTFS: 452 if (!ntfs_filestat(vp, fsp)) 453 badtype = "error"; 454 break; 455 case VT_NULL: 456 case VT_OVERLAY: 457 case VT_UMAP: 458 badtype = layer_filestat(vp, fsp); 459 break; 460 default: { 461 static char unknown[10]; 462 (void)snprintf(badtype = unknown, sizeof unknown, 463 "?(%x)", vp->v_tag); 464 break; 465 } 466 } 467 return (badtype); 468 } 469 470 void 471 vtrans(vp, i, flag) 472 struct vnode *vp; 473 int i; 474 int flag; 475 { 476 struct vnode vn; 477 struct filestat fst; 478 char mode[15], rw[3]; 479 char *badtype, *filename; 480 481 filename = NULL; 482 if (!KVM_READ(vp, &vn, sizeof(struct vnode))) { 483 dprintf("can't read vnode at %p for pid %d", vp, Pid); 484 return; 485 } 486 badtype = vfilestat(&vn, &fst); 487 if (checkfile) { 488 int fsmatch = 0; 489 DEVS *d; 490 491 if (badtype) 492 return; 493 for (d = devs; d != NULL; d = d->next) 494 if (d->fsid == fst.fsid) { 495 fsmatch = 1; 496 if (d->ino == fst.fileid) { 497 filename = d->name; 498 break; 499 } 500 } 501 if (fsmatch == 0 || (filename == NULL && fsflg == 0)) 502 return; 503 } 504 PREFIX(i); 505 if (badtype) { 506 (void)printf(" - - %10s -\n", badtype); 507 return; 508 } 509 if (nflg) 510 (void)printf(" %2d,%-2d", major(fst.fsid), minor(fst.fsid)); 511 else 512 (void)printf(" %-8s", getmnton(vn.v_mount)); 513 if (nflg) 514 (void)snprintf(mode, sizeof mode, "%o", fst.mode); 515 else 516 strmode(fst.mode, mode); 517 (void)printf(" %7ld %*s", (long)fst.fileid, nflg ? 5 : 10, mode); 518 switch (vn.v_type) { 519 case VBLK: 520 case VCHR: { 521 char *name; 522 523 if (nflg || ((name = devname(fst.rdev, vn.v_type == VCHR ? 524 S_IFCHR : S_IFBLK)) == NULL)) 525 printf(" %2d,%-2d", major(fst.rdev), minor(fst.rdev)); 526 else 527 printf(" %6s", name); 528 break; 529 } 530 default: 531 printf(" %6lld", (long long)fst.size); 532 } 533 rw[0] = '\0'; 534 if (flag & FREAD) 535 strcat(rw, "r"); 536 if (flag & FWRITE) 537 strcat(rw, "w"); 538 printf(" %-2s", rw); 539 if (filename && !fsflg) 540 printf(" %s", filename); 541 putchar('\n'); 542 } 543 544 int 545 ufs_filestat(vp, fsp) 546 struct vnode *vp; 547 struct filestat *fsp; 548 { 549 struct inode inode; 550 551 if (!KVM_READ(VTOI(vp), &inode, sizeof (inode))) { 552 dprintf("can't read inode at %p for pid %d", VTOI(vp), Pid); 553 return 0; 554 } 555 fsp->fsid = inode.i_dev & 0xffff; 556 fsp->fileid = (long)inode.i_number; 557 fsp->mode = (mode_t)inode.i_ffs_mode; 558 fsp->size = inode.i_ffs_size; 559 fsp->rdev = inode.i_ffs_rdev; 560 561 return 1; 562 } 563 564 int 565 ext2fs_filestat(vp, fsp) 566 struct vnode *vp; 567 struct filestat *fsp; 568 { 569 struct inode inode; 570 571 if (!KVM_READ(VTOI(vp), &inode, sizeof (inode))) { 572 dprintf("can't read inode at %p for pid %d", VTOI(vp), Pid); 573 return 0; 574 } 575 fsp->fsid = inode.i_dev & 0xffff; 576 fsp->fileid = (long)inode.i_number; 577 fsp->mode = (mode_t)inode.i_e2fs_mode; 578 fsp->size = inode.i_e2fs_size; 579 fsp->rdev = 0; /* XXX */ 580 return 1; 581 } 582 583 int 584 nfs_filestat(vp, fsp) 585 struct vnode *vp; 586 struct filestat *fsp; 587 { 588 struct nfsnode nfsnode; 589 struct vattr va; 590 591 if (!KVM_READ(VTONFS(vp), &nfsnode, sizeof (nfsnode))) { 592 dprintf("can't read nfsnode at %p for pid %d", VTONFS(vp), 593 Pid); 594 return 0; 595 } 596 if (!KVM_READ(nfsnode.n_vattr, &va, sizeof(va))) { 597 dprintf("can't read vnode attributes at %p for pid %d", 598 nfsnode.n_vattr, Pid); 599 return 0; 600 } 601 fsp->fsid = va.va_fsid; 602 fsp->fileid = va.va_fileid; 603 fsp->size = nfsnode.n_size; 604 fsp->rdev = va.va_rdev; 605 fsp->mode = (mode_t)va.va_mode | getftype(vp->v_type); 606 607 return 1; 608 } 609 610 int 611 msdosfs_filestat(vp, fsp) 612 struct vnode *vp; 613 struct filestat *fsp; 614 { 615 struct denode de; 616 struct msdosfsmount mp; 617 618 if (!KVM_READ(VTONFS(vp), &de, sizeof(de))) { 619 dprintf("can't read denode at %p for pid %d", VTONFS(vp), 620 Pid); 621 return 0; 622 } 623 if (!KVM_READ(de.de_pmp, &mp, sizeof(mp))) { 624 dprintf("can't read mount struct at %p for pid %d", de.de_pmp, 625 Pid); 626 return 0; 627 } 628 629 fsp->fsid = de.de_dev & 0xffff; 630 fsp->fileid = 0; /* XXX see msdosfs_vptofh() for more info */ 631 fsp->size = de.de_FileSize; 632 fsp->rdev = 0; /* msdosfs doesn't support device files */ 633 fsp->mode = (0777 & mp.pm_mask) | getftype(vp->v_type); 634 return 1; 635 } 636 637 char * 638 layer_filestat(vp, fsp) 639 struct vnode *vp; 640 struct filestat *fsp; 641 { 642 struct layer_node layer_node; 643 struct mount mount; 644 struct vnode vn; 645 char *badtype; 646 647 if (!KVM_READ(VTOLAYER(vp), &layer_node, sizeof(layer_node))) { 648 dprintf("can't read layer_node at %p for pid %d", 649 VTOLAYER(vp), Pid); 650 return ("error"); 651 } 652 if (!KVM_READ(vp->v_mount, &mount, sizeof(struct mount))) { 653 dprintf("can't read mount struct at %p for pid %d", 654 vp->v_mount, Pid); 655 return ("error"); 656 } 657 vp = layer_node.layer_lowervp; 658 if (!KVM_READ(vp, &vn, sizeof(struct vnode))) { 659 dprintf("can't read vnode at %p for pid %d", vp, Pid); 660 return ("error"); 661 } 662 if ((badtype = vfilestat(&vn, fsp)) == NULL) 663 fsp->fsid = mount.mnt_stat.f_fsid.val[0]; 664 return (badtype); 665 } 666 667 char * 668 getmnton(m) 669 struct mount *m; 670 { 671 static struct mount mount; 672 static struct mtab { 673 struct mtab *next; 674 struct mount *m; 675 char mntonname[MNAMELEN]; 676 } *mhead = NULL; 677 struct mtab *mt; 678 679 for (mt = mhead; mt != NULL; mt = mt->next) 680 if (m == mt->m) 681 return (mt->mntonname); 682 if (!KVM_READ(m, &mount, sizeof(struct mount))) { 683 warnx("can't read mount table at %p", m); 684 return (NULL); 685 } 686 if ((mt = malloc(sizeof (struct mtab))) == NULL) { 687 err(1, "malloc(%u)", (unsigned int)sizeof(struct mtab)); 688 } 689 mt->m = m; 690 memmove(&mt->mntonname[0], &mount.mnt_stat.f_mntonname[0], MNAMELEN); 691 mt->next = mhead; 692 mhead = mt; 693 return (mt->mntonname); 694 } 695 696 #ifdef INET6 697 static const char * 698 inet6_addrstr(p) 699 struct in6_addr *p; 700 { 701 struct sockaddr_in6 sin6; 702 static char hbuf[NI_MAXHOST]; 703 #ifdef NI_WITHSCOPEID 704 const int niflags = NI_NUMERICHOST | NI_WITHSCOPEID; 705 #else 706 const int niflags = NI_NUMERICHOST; 707 #endif 708 709 memset(&sin6, 0, sizeof(sin6)); 710 sin6.sin6_family = AF_INET6; 711 sin6.sin6_len = sizeof(struct sockaddr_in6); 712 sin6.sin6_addr = *p; 713 if (IN6_IS_ADDR_LINKLOCAL(p) && 714 *(u_int16_t *)&sin6.sin6_addr.s6_addr[2] != 0) { 715 sin6.sin6_scope_id = 716 ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]); 717 sin6.sin6_addr.s6_addr[2] = sin6.sin6_addr.s6_addr[3] = 0; 718 } 719 720 if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, 721 hbuf, sizeof(hbuf), NULL, 0, niflags)) 722 return "invalid"; 723 724 return hbuf; 725 } 726 #endif 727 728 void 729 socktrans(sock, i) 730 struct socket *sock; 731 int i; 732 { 733 static 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 #ifdef INET6 747 struct in6pcb in6pcb; 748 #endif 749 struct unpcb unpcb; 750 int len; 751 char dname[32]; 752 #ifdef INET6 753 char xaddrbuf[NI_MAXHOST + 2]; 754 #endif 755 756 PREFIX(i); 757 758 /* fill in socket */ 759 if (!KVM_READ(sock, &so, sizeof(struct socket))) { 760 dprintf("can't read sock at %p", sock); 761 goto bad; 762 } 763 764 /* fill in protosw entry */ 765 if (!KVM_READ(so.so_proto, &proto, sizeof(struct protosw))) { 766 dprintf("can't read protosw at %p", 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("can't read domain at %p", proto.pr_domain); 773 goto bad; 774 } 775 776 if ((len = kvm_read(kd, (u_long)dom.dom_name, dname, 777 sizeof(dname) - 1)) != sizeof(dname) -1) { 778 dprintf("can't read domain name at %p", dom.dom_name); 779 dname[0] = '\0'; 780 } 781 else 782 dname[len] = '\0'; 783 784 if ((u_short)so.so_type > STYPEMAX) 785 printf("* %s ?%d", dname, so.so_type); 786 else 787 printf("* %s %s", dname, stypename[so.so_type]); 788 789 /* 790 * protocol specific formatting 791 * 792 * Try to find interesting things to print. For TCP, the interesting 793 * thing is the address of the tcpcb, for UDP and others, just the 794 * inpcb (socket pcb). For UNIX domain, its the address of the socket 795 * pcb and the address of the connected pcb (if connected). Otherwise 796 * just print the protocol number and address of the socket itself. 797 * The idea is not to duplicate netstat, but to make available enough 798 * information for further analysis. 799 */ 800 switch(dom.dom_family) { 801 case AF_INET: 802 getinetproto(proto.pr_protocol); 803 if (proto.pr_protocol == IPPROTO_TCP) { 804 if (so.so_pcb == NULL) 805 break; 806 if (kvm_read(kd, (u_long)so.so_pcb, (char *)&inpcb, 807 sizeof(struct inpcb)) != sizeof(struct inpcb)) { 808 dprintf("can't read inpcb at %p", so.so_pcb); 809 goto bad; 810 } 811 printf(" %lx", (long)inpcb.inp_ppcb); 812 printf(" %s:%d", 813 inpcb.inp_laddr.s_addr == INADDR_ANY ? "*" : 814 inet_ntoa(inpcb.inp_laddr), ntohs(inpcb.inp_lport)); 815 if (inpcb.inp_fport) { 816 printf(" <-> %s:%d", 817 inpcb.inp_faddr.s_addr == INADDR_ANY ? "*" : 818 inet_ntoa(inpcb.inp_faddr), 819 ntohs(inpcb.inp_fport)); 820 } 821 } else if (proto.pr_protocol == IPPROTO_UDP) { 822 if (so.so_pcb == NULL) 823 break; 824 if (kvm_read(kd, (u_long)so.so_pcb, (char *)&inpcb, 825 sizeof(struct inpcb)) != sizeof(struct inpcb)) { 826 dprintf("can't read inpcb at %p", so.so_pcb); 827 goto bad; 828 } 829 printf(" %lx", (long)so.so_pcb); 830 printf(" %s:%d", 831 inpcb.inp_laddr.s_addr == INADDR_ANY ? "*" : 832 inet_ntoa(inpcb.inp_laddr), ntohs(inpcb.inp_lport)); 833 if (inpcb.inp_fport) 834 printf(" <-> %s:%d", 835 inpcb.inp_faddr.s_addr == INADDR_ANY ? "*" : 836 inet_ntoa(inpcb.inp_faddr), 837 ntohs(inpcb.inp_fport)); 838 } else if (so.so_pcb) 839 printf(" %lx", (long)so.so_pcb); 840 break; 841 #ifdef INET6 842 case AF_INET6: 843 getinetproto(proto.pr_protocol); 844 if (proto.pr_protocol == IPPROTO_TCP) { 845 if (so.so_pcb == NULL) 846 break; 847 if (kvm_read(kd, (u_long)so.so_pcb, (char *)&in6pcb, 848 sizeof(struct in6pcb)) != sizeof(struct in6pcb)) { 849 dprintf("can't read in6pcb at %p", so.so_pcb); 850 goto bad; 851 } 852 printf(" %lx", (long)in6pcb.in6p_ppcb); 853 sprintf(xaddrbuf, "[%s]", 854 inet6_addrstr(&in6pcb.in6p_laddr)); 855 printf(" %s:%d", 856 IN6_IS_ADDR_UNSPECIFIED(&in6pcb.in6p_laddr) ? "*" : 857 xaddrbuf, 858 ntohs(in6pcb.in6p_lport)); 859 if (in6pcb.in6p_fport) { 860 sprintf(xaddrbuf, "[%s]", 861 inet6_addrstr(&in6pcb.in6p_faddr)); 862 printf(" <-> %s:%d", 863 IN6_IS_ADDR_UNSPECIFIED(&in6pcb.in6p_faddr) ? "*" : 864 xaddrbuf, 865 ntohs(in6pcb.in6p_fport)); 866 } 867 } else if (proto.pr_protocol == IPPROTO_UDP) { 868 if (so.so_pcb == NULL) 869 break; 870 if (kvm_read(kd, (u_long)so.so_pcb, (char *)&in6pcb, 871 sizeof(struct in6pcb)) != sizeof(struct in6pcb)) { 872 dprintf("can't read inpcb at %p", so.so_pcb); 873 goto bad; 874 } 875 printf(" %lx", (long)so.so_pcb); 876 sprintf(xaddrbuf, "[%s]", 877 inet6_addrstr(&in6pcb.in6p_laddr)); 878 printf(" %s:%d", 879 IN6_IS_ADDR_UNSPECIFIED(&in6pcb.in6p_laddr) ? "*" : 880 xaddrbuf, 881 ntohs(in6pcb.in6p_lport)); 882 if (in6pcb.in6p_fport) { 883 sprintf(xaddrbuf, "[%s]", 884 inet6_addrstr(&in6pcb.in6p_faddr)); 885 printf(" <-> %s:%d", 886 IN6_IS_ADDR_UNSPECIFIED(&in6pcb.in6p_faddr) ? "*" : 887 xaddrbuf, 888 ntohs(in6pcb.in6p_fport)); 889 } 890 } else if (so.so_pcb) 891 printf(" %lx", (long)so.so_pcb); 892 break; 893 #endif 894 case AF_LOCAL: 895 /* print address of pcb and connected pcb */ 896 if (so.so_pcb) { 897 printf(" %lx", (long)so.so_pcb); 898 if (kvm_read(kd, (u_long)so.so_pcb, (char *)&unpcb, 899 sizeof(struct unpcb)) != sizeof(struct unpcb)){ 900 dprintf("can't read unpcb at %p", so.so_pcb); 901 goto bad; 902 } 903 if (unpcb.unp_conn) { 904 char shoconn[4], *cp; 905 906 cp = shoconn; 907 if (!(so.so_state & SS_CANTRCVMORE)) 908 *cp++ = '<'; 909 *cp++ = '-'; 910 if (!(so.so_state & SS_CANTSENDMORE)) 911 *cp++ = '>'; 912 *cp = '\0'; 913 printf(" %s %lx", shoconn, 914 (long)unpcb.unp_conn); 915 } 916 } 917 break; 918 default: 919 /* print protocol number and socket address */ 920 printf(" %d %lx", proto.pr_protocol, (long)sock); 921 } 922 printf("\n"); 923 return; 924 bad: 925 printf("* error\n"); 926 } 927 928 void 929 ptrans(fp, cpipe, i) 930 struct file *fp; 931 struct pipe *cpipe; 932 int i; 933 { 934 struct pipe cp; 935 936 PREFIX(i); 937 938 /* fill in pipe */ 939 if (!KVM_READ(cpipe, &cp, sizeof(struct pipe))) { 940 dprintf("can't read pipe at %p", cpipe); 941 goto bad; 942 } 943 944 /* pipe descriptor is either read or write, never both */ 945 printf("* pipe %p %s %p %s%s%s", cpipe, 946 (fp->f_flag & FWRITE) ? "->" : "<-", 947 cp.pipe_peer, 948 (fp->f_flag & FWRITE) ? "w" : "r", 949 (fp->f_flag & FNONBLOCK) ? "n" : "", 950 (cp.pipe_state & PIPE_ASYNC) ? "a" : ""); 951 printf("\n"); 952 return; 953 bad: 954 printf("* error\n"); 955 } 956 957 void 958 kqueuetrans(kq, i) 959 void *kq; 960 int i; 961 { 962 963 PREFIX(i); 964 printf("* kqueue %lx", (long)kq); 965 printf("\n"); 966 } 967 968 /* 969 * getinetproto -- 970 * print name of protocol number 971 */ 972 void 973 getinetproto(number) 974 int number; 975 { 976 char *cp; 977 978 switch (number) { 979 case IPPROTO_IP: 980 cp = "ip"; break; 981 case IPPROTO_ICMP: 982 cp ="icmp"; break; 983 case IPPROTO_GGP: 984 cp ="ggp"; break; 985 case IPPROTO_TCP: 986 cp ="tcp"; break; 987 case IPPROTO_EGP: 988 cp ="egp"; break; 989 case IPPROTO_PUP: 990 cp ="pup"; break; 991 case IPPROTO_UDP: 992 cp ="udp"; break; 993 case IPPROTO_IDP: 994 cp ="idp"; break; 995 case IPPROTO_RAW: 996 cp ="raw"; break; 997 case IPPROTO_ICMPV6: 998 cp ="icmp6"; break; 999 default: 1000 printf(" %d", number); 1001 return; 1002 } 1003 printf(" %s", cp); 1004 } 1005 1006 int 1007 getfname(filename) 1008 char *filename; 1009 { 1010 struct stat statbuf; 1011 DEVS *cur; 1012 1013 if (stat(filename, &statbuf)) { 1014 warn("stat(%s)", filename); 1015 return(0); 1016 } 1017 if ((cur = malloc(sizeof(DEVS))) == NULL) { 1018 err(1, "malloc(%u)", (unsigned int)sizeof(DEVS)); 1019 } 1020 cur->next = devs; 1021 devs = cur; 1022 1023 cur->ino = statbuf.st_ino; 1024 cur->fsid = statbuf.st_dev & 0xffff; 1025 cur->name = filename; 1026 return(1); 1027 } 1028 1029 mode_t 1030 getftype(v_type) 1031 enum vtype v_type; 1032 { 1033 mode_t ftype; 1034 1035 switch (v_type) { 1036 case VREG: 1037 ftype = S_IFREG; 1038 break; 1039 case VDIR: 1040 ftype = S_IFDIR; 1041 break; 1042 case VBLK: 1043 ftype = S_IFBLK; 1044 break; 1045 case VCHR: 1046 ftype = S_IFCHR; 1047 break; 1048 case VLNK: 1049 ftype = S_IFLNK; 1050 break; 1051 case VSOCK: 1052 ftype = S_IFSOCK; 1053 break; 1054 case VFIFO: 1055 ftype = S_IFIFO; 1056 break; 1057 default: 1058 ftype = 0; 1059 break; 1060 }; 1061 1062 return ftype; 1063 } 1064 1065 void 1066 usage() 1067 { 1068 errx(1, 1069 "usage: fstat [-fnv] [-p pid] [-u user] [-N system] [-M core] [file ...]\n"); 1070 } 1071
Indexes created Tue Sep 23 23:09:58 GMT 2025