fstat.c revision 1.65
1 /* $NetBSD: fstat.c,v 1.65 2003/10/21 02:16:59 fvdl 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. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 #ifndef lint 34 __COPYRIGHT("@(#) Copyright (c) 1988, 1993\n\ 35 The Regents of the University of California. All rights reserved.\n"); 36 #endif /* not lint */ 37 38 #ifndef lint 39 #if 0 40 static char sccsid[] = "@(#)fstat.c 8.3 (Berkeley) 5/2/95"; 41 #else 42 __RCSID("$NetBSD: fstat.c,v 1.65 2003/10/21 02:16:59 fvdl Exp $"); 43 #endif 44 #endif /* not lint */ 45 46 #include <sys/param.h> 47 #include <sys/time.h> 48 #include <sys/proc.h> 49 #include <sys/user.h> 50 #include <sys/stat.h> 51 #include <sys/vnode.h> 52 #include <sys/socket.h> 53 #include <sys/socketvar.h> 54 #include <sys/domain.h> 55 #include <sys/protosw.h> 56 #include <sys/unpcb.h> 57 #include <sys/sysctl.h> 58 #include <sys/filedesc.h> 59 #include <sys/pipe.h> 60 #define _KERNEL 61 #include <sys/file.h> 62 #include <ufs/ufs/inode.h> 63 #undef _KERNEL 64 #define _KERNEL 65 #include <sys/mount.h> 66 #undef _KERNEL 67 #define NFS 68 #include <nfs/nfsproto.h> 69 #include <nfs/rpcv2.h> 70 #include <nfs/nfs.h> 71 #include <nfs/nfsnode.h> 72 #undef NFS 73 #include <msdosfs/denode.h> 74 #include <msdosfs/bpb.h> 75 #define _KERNEL 76 #include <msdosfs/msdosfsmount.h> 77 #undef _KERNEL 78 #define _KERNEL 79 #include <miscfs/genfs/layer.h> 80 #undef _KERNEL 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 #ifdef INET6 89 #include <netinet/ip6.h> 90 #include <netinet6/ip6_var.h> 91 #include <netinet6/in6_pcb.h> 92 #endif 93 94 #include <netdb.h> 95 #include <arpa/inet.h> 96 97 #include <ctype.h> 98 #include <errno.h> 99 #include <kvm.h> 100 #include <limits.h> 101 #include <nlist.h> 102 #include <paths.h> 103 #include <pwd.h> 104 #include <stdio.h> 105 #include <stdlib.h> 106 #include <string.h> 107 #include <unistd.h> 108 #include <err.h> 109 110 #include "fstat.h" 111 112 #define TEXT -1 113 #define CDIR -2 114 #define RDIR -3 115 #define TRACE -4 116 117 typedef struct devs { 118 struct devs *next; 119 long fsid; 120 ino_t ino; 121 char *name; 122 } DEVS; 123 DEVS *devs; 124 125 int fsflg, /* show files on same filesystem as file(s) argument */ 126 pflg, /* show files open by a particular pid */ 127 uflg; /* show files open by a particular (effective) user */ 128 int checkfile; /* true if restricting to particular files or filesystems */ 129 int nflg; /* (numerical) display f.s. and rdev as dev_t */ 130 int vflg; /* display errors in locating kernel data objects etc... */ 131 132 struct file **ofiles; /* buffer of pointers to file structures */ 133 int maxfiles; 134 #define ALLOC_OFILES(d) \ 135 if ((d) > maxfiles) { \ 136 free(ofiles); \ 137 ofiles = malloc((d) * sizeof(struct file *)); \ 138 if (ofiles == NULL) { \ 139 err(1, "malloc(%u)", (d) * \ 140 (unsigned int)sizeof(struct file *)); \ 141 } \ 142 maxfiles = (d); \ 143 } 144 145 kvm_t *kd; 146 147 void dofiles __P((struct kinfo_proc2 *)); 148 int ext2fs_filestat __P((struct vnode *, struct filestat *)); 149 int getfname __P((char *)); 150 void getinetproto __P((int)); 151 char *getmnton __P((struct mount *)); 152 char *layer_filestat __P((struct vnode *, struct filestat *)); 153 int main __P((int, char **)); 154 int msdosfs_filestat __P((struct vnode *, struct filestat *)); 155 int nfs_filestat __P((struct vnode *, struct filestat *)); 156 #ifdef INET6 157 static const char *inet6_addrstr __P((struct in6_addr *)); 158 #endif 159 void socktrans __P((struct socket *, int)); 160 void kqueuetrans __P((void *, int)); 161 int ufs_filestat __P((struct vnode *, struct filestat *)); 162 void usage __P((void)); 163 char *vfilestat __P((struct vnode *, struct filestat *)); 164 void vtrans __P((struct vnode *, int, int)); 165 void ftrans __P((struct file *, int)); 166 void ptrans __P((struct file *, struct pipe *, int)); 167 168 int 169 main(argc, argv) 170 int argc; 171 char **argv; 172 { 173 struct passwd *passwd; 174 struct kinfo_proc2 *p, *plast; 175 int arg, ch, what; 176 char *memf, *nlistf; 177 char buf[_POSIX2_LINE_MAX]; 178 int cnt; 179 gid_t egid = getegid(); 180 181 (void)setegid(getgid()); 182 arg = 0; 183 what = KERN_PROC_ALL; 184 nlistf = memf = NULL; 185 while ((ch = getopt(argc, argv, "fnp:u:vN:M:")) != -1) 186 switch((char)ch) { 187 case 'f': 188 fsflg = 1; 189 break; 190 case 'M': 191 memf = optarg; 192 break; 193 case 'N': 194 nlistf = optarg; 195 break; 196 case 'n': 197 nflg = 1; 198 break; 199 case 'p': 200 if (pflg++) 201 usage(); 202 if (!isdigit(*optarg)) { 203 warnx("-p requires a process id"); 204 usage(); 205 } 206 what = KERN_PROC_PID; 207 arg = atoi(optarg); 208 break; 209 case 'u': 210 if (uflg++) 211 usage(); 212 if (!(passwd = getpwnam(optarg))) { 213 errx(1, "%s: unknown uid", optarg); 214 } 215 what = KERN_PROC_UID; 216 arg = passwd->pw_uid; 217 break; 218 case 'v': 219 vflg = 1; 220 break; 221 case '?': 222 default: 223 usage(); 224 } 225 226 if (*(argv += optind)) { 227 for (; *argv; ++argv) { 228 if (getfname(*argv)) 229 checkfile = 1; 230 } 231 if (!checkfile) /* file(s) specified, but none accessible */ 232 exit(1); 233 } 234 235 ALLOC_OFILES(256); /* reserve space for file pointers */ 236 237 if (fsflg && !checkfile) { 238 /* -f with no files means use wd */ 239 if (getfname(".") == 0) 240 exit(1); 241 checkfile = 1; 242 } 243 244 /* 245 * Discard setgid privileges. If not the running kernel, we toss 246 * them away totally so that bad guys can't print interesting stuff 247 * from kernel memory, otherwise switch back to kmem for the 248 * duration of the kvm_openfiles() call. 249 */ 250 if (nlistf != NULL || memf != NULL) 251 (void)setgid(getgid()); 252 else 253 (void)setegid(egid); 254 255 if ((kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, buf)) == NULL) 256 errx(1, "%s", buf); 257 258 /* get rid of it now anyway */ 259 if (nlistf == NULL && memf == NULL) 260 (void)setgid(getgid()); 261 262 if ((p = kvm_getproc2(kd, what, arg, sizeof *p, &cnt)) == NULL) { 263 errx(1, "%s", kvm_geterr(kd)); 264 } 265 if (nflg) 266 printf("%s", 267 "USER CMD PID FD DEV INUM MODE SZ|DV R/W"); 268 else 269 printf("%s", 270 "USER CMD PID FD MOUNT INUM MODE SZ|DV R/W"); 271 if (checkfile && fsflg == 0) 272 printf(" NAME\n"); 273 else 274 putchar('\n'); 275 276 for (plast = &p[cnt]; p < plast; ++p) { 277 if (p->p_stat == SZOMB) 278 continue; 279 dofiles(p); 280 } 281 exit(0); 282 } 283 284 const char *Uname, *Comm; 285 pid_t Pid; 286 287 #define PREFIX(i) printf("%-8.8s %-10s %5d", Uname, Comm, Pid); \ 288 switch(i) { \ 289 case TEXT: \ 290 printf(" text"); \ 291 break; \ 292 case CDIR: \ 293 printf(" wd"); \ 294 break; \ 295 case RDIR: \ 296 printf(" root"); \ 297 break; \ 298 case TRACE: \ 299 printf(" tr"); \ 300 break; \ 301 default: \ 302 printf(" %4d", i); \ 303 break; \ 304 } 305 306 /* 307 * print open files attributed to this process 308 */ 309 void 310 dofiles(p) 311 struct kinfo_proc2 *p; 312 { 313 int i; 314 struct filedesc0 filed0; 315 #define filed filed0.fd_fd 316 struct cwdinfo cwdi; 317 318 Uname = user_from_uid(p->p_uid, 0); 319 Pid = p->p_pid; 320 Comm = p->p_comm; 321 322 if (p->p_fd == 0 || p->p_cwdi == 0) 323 return; 324 if (!KVM_READ(p->p_fd, &filed0, sizeof (filed0))) { 325 warnx("can't read filedesc at %#llx for pid %d", (unsigned long long)p->p_fd, Pid); 326 return; 327 } 328 if (!KVM_READ(p->p_cwdi, &cwdi, sizeof(cwdi))) { 329 warnx("can't read cwdinfo at %#llx for pid %d", (unsigned long long)p->p_cwdi, Pid); 330 return; 331 } 332 if (filed.fd_nfiles < 0 || filed.fd_lastfile >= filed.fd_nfiles || 333 filed.fd_freefile > filed.fd_lastfile + 1) { 334 dprintf("filedesc corrupted at %#llx for pid %d", (unsigned long long)p->p_fd, Pid); 335 return; 336 } 337 /* 338 * root directory vnode, if one 339 */ 340 if (cwdi.cwdi_rdir) 341 vtrans(cwdi.cwdi_rdir, RDIR, FREAD); 342 /* 343 * current working directory vnode 344 */ 345 vtrans(cwdi.cwdi_cdir, CDIR, FREAD); 346 /* 347 * ktrace vnode, if one 348 */ 349 if (p->p_tracep) 350 ftrans((struct file *)(intptr_t)p->p_tracep, TRACE); 351 /* 352 * open files 353 */ 354 #define FPSIZE (sizeof (struct file *)) 355 ALLOC_OFILES(filed.fd_lastfile+1); 356 if (filed.fd_nfiles > NDFILE) { 357 if (!KVM_READ(filed.fd_ofiles, ofiles, 358 (filed.fd_lastfile+1) * FPSIZE)) { 359 dprintf("can't read file structures at %p for pid %d", 360 filed.fd_ofiles, Pid); 361 return; 362 } 363 } else 364 memmove(ofiles, filed0.fd_dfiles, 365 (filed.fd_lastfile+1) * FPSIZE); 366 for (i = 0; i <= filed.fd_lastfile; i++) { 367 if (ofiles[i] == NULL) 368 continue; 369 ftrans(ofiles[i], i); 370 } 371 } 372 373 void 374 ftrans (fp, i) 375 struct file *fp; 376 int i; 377 { 378 struct file file; 379 380 if (!KVM_READ(fp, &file, sizeof (struct file))) { 381 dprintf("can't read file %d at %p for pid %d", 382 i, fp, Pid); 383 return; 384 } 385 switch (file.f_type) { 386 case DTYPE_VNODE: 387 vtrans((struct vnode *)file.f_data, i, file.f_flag); 388 break; 389 case DTYPE_SOCKET: 390 if (checkfile == 0) 391 socktrans((struct socket *)file.f_data, i); 392 break; 393 case DTYPE_PIPE: 394 if (checkfile == 0) 395 ptrans(&file, (struct pipe *)file.f_data, i); 396 break; 397 case DTYPE_KQUEUE: 398 if (checkfile == 0) 399 kqueuetrans((void *)file.f_data, i); 400 break; 401 default: 402 dprintf("unknown file type %d for file %d of pid %d", 403 file.f_type, i, Pid); 404 break; 405 } 406 } 407 408 char * 409 vfilestat(vp, fsp) 410 struct vnode *vp; 411 struct filestat *fsp; 412 { 413 char *badtype = NULL; 414 415 if (vp->v_type == VNON || vp->v_tag == VT_NON) 416 badtype = "none"; 417 else if (vp->v_type == VBAD) 418 badtype = "bad"; 419 else 420 switch (vp->v_tag) { 421 case VT_UFS: 422 case VT_LFS: 423 case VT_MFS: 424 if (!ufs_filestat(vp, fsp)) 425 badtype = "error"; 426 break; 427 case VT_MSDOSFS: 428 if (!msdosfs_filestat(vp, fsp)) 429 badtype = "error"; 430 break; 431 case VT_NFS: 432 if (!nfs_filestat(vp, fsp)) 433 badtype = "error"; 434 break; 435 case VT_EXT2FS: 436 if (!ext2fs_filestat(vp, fsp)) 437 badtype = "error"; 438 break; 439 case VT_ISOFS: 440 if (!isofs_filestat(vp, fsp)) 441 badtype = "error"; 442 break; 443 case VT_NTFS: 444 if (!ntfs_filestat(vp, fsp)) 445 badtype = "error"; 446 break; 447 case VT_NULL: 448 case VT_OVERLAY: 449 case VT_UMAP: 450 badtype = layer_filestat(vp, fsp); 451 break; 452 default: { 453 static char unknown[10]; 454 (void)snprintf(badtype = unknown, sizeof unknown, 455 "?(%x)", vp->v_tag); 456 break; 457 } 458 } 459 return (badtype); 460 } 461 462 void 463 vtrans(vp, i, flag) 464 struct vnode *vp; 465 int i; 466 int flag; 467 { 468 struct vnode vn; 469 struct filestat fst; 470 char mode[15], rw[3]; 471 char *badtype, *filename; 472 473 filename = NULL; 474 if (!KVM_READ(vp, &vn, sizeof(struct vnode))) { 475 dprintf("can't read vnode at %p for pid %d", vp, Pid); 476 return; 477 } 478 badtype = vfilestat(&vn, &fst); 479 if (checkfile) { 480 int fsmatch = 0; 481 DEVS *d; 482 483 if (badtype) 484 return; 485 for (d = devs; d != NULL; d = d->next) 486 if (d->fsid == fst.fsid) { 487 fsmatch = 1; 488 if (d->ino == fst.fileid) { 489 filename = d->name; 490 break; 491 } 492 } 493 if (fsmatch == 0 || (filename == NULL && fsflg == 0)) 494 return; 495 } 496 PREFIX(i); 497 if (badtype) { 498 (void)printf(" - - %10s -\n", badtype); 499 return; 500 } 501 if (nflg) 502 (void)printf(" %2d,%-2d", major(fst.fsid), minor(fst.fsid)); 503 else 504 (void)printf(" %-8s", getmnton(vn.v_mount)); 505 if (nflg) 506 (void)snprintf(mode, sizeof mode, "%o", fst.mode); 507 else 508 strmode(fst.mode, mode); 509 (void)printf(" %7ld %*s", (long)fst.fileid, nflg ? 5 : 10, mode); 510 switch (vn.v_type) { 511 case VBLK: 512 case VCHR: { 513 char *name; 514 515 if (nflg || ((name = devname(fst.rdev, vn.v_type == VCHR ? 516 S_IFCHR : S_IFBLK)) == NULL)) 517 printf(" %2d,%-2d", major(fst.rdev), minor(fst.rdev)); 518 else 519 printf(" %6s", name); 520 break; 521 } 522 default: 523 printf(" %6lld", (long long)fst.size); 524 } 525 rw[0] = '\0'; 526 if (flag & FREAD) 527 strlcat(rw, "r", sizeof(rw)); 528 if (flag & FWRITE) 529 strlcat(rw, "w", sizeof(rw)); 530 printf(" %-2s", rw); 531 if (filename && !fsflg) 532 printf(" %s", filename); 533 putchar('\n'); 534 } 535 536 int 537 ufs_filestat(vp, fsp) 538 struct vnode *vp; 539 struct filestat *fsp; 540 { 541 struct inode inode; 542 union dinode { 543 struct ufs1_dinode dp1; 544 struct ufs2_dinode dp2; 545 } dip; 546 547 if (!KVM_READ(VTOI(vp), &inode, sizeof (inode))) { 548 dprintf("can't read inode at %p for pid %d", VTOI(vp), Pid); 549 return 0; 550 } 551 552 if (!KVM_READ(inode.i_din.ffs1_din, &dip, sizeof(struct ufs1_dinode))) { 553 dprintf("can't read dinode at %p for pid %d", 554 inode.i_din.ffs1_din, Pid); 555 return 0; 556 } 557 if (inode.i_size == dip.dp1.di_size) 558 fsp->rdev = dip.dp1.di_rdev; 559 else { 560 if (!KVM_READ(inode.i_din.ffs1_din, &dip, 561 sizeof(struct ufs2_dinode))) { 562 dprintf("can't read dinode at %p for pid %d", 563 inode.i_din.ffs1_din, Pid); 564 return 0; 565 } 566 fsp->rdev = dip.dp2.di_rdev; 567 } 568 569 fsp->fsid = inode.i_dev & 0xffff; 570 fsp->fileid = (long)inode.i_number; 571 fsp->mode = (mode_t)inode.i_mode; 572 fsp->size = inode.i_size; 573 574 return 1; 575 } 576 577 int 578 ext2fs_filestat(vp, fsp) 579 struct vnode *vp; 580 struct filestat *fsp; 581 { 582 struct inode inode; 583 584 if (!KVM_READ(VTOI(vp), &inode, sizeof (inode))) { 585 dprintf("can't read inode at %p for pid %d", VTOI(vp), Pid); 586 return 0; 587 } 588 fsp->fsid = inode.i_dev & 0xffff; 589 fsp->fileid = (long)inode.i_number; 590 fsp->mode = (mode_t)inode.i_e2fs_mode; 591 fsp->size = inode.i_e2fs_size; 592 fsp->rdev = 0; /* XXX */ 593 return 1; 594 } 595 596 int 597 nfs_filestat(vp, fsp) 598 struct vnode *vp; 599 struct filestat *fsp; 600 { 601 struct nfsnode nfsnode; 602 struct vattr va; 603 604 if (!KVM_READ(VTONFS(vp), &nfsnode, sizeof (nfsnode))) { 605 dprintf("can't read nfsnode at %p for pid %d", VTONFS(vp), 606 Pid); 607 return 0; 608 } 609 if (!KVM_READ(nfsnode.n_vattr, &va, sizeof(va))) { 610 dprintf("can't read vnode attributes at %p for pid %d", 611 nfsnode.n_vattr, Pid); 612 return 0; 613 } 614 fsp->fsid = va.va_fsid; 615 fsp->fileid = va.va_fileid; 616 fsp->size = nfsnode.n_size; 617 fsp->rdev = va.va_rdev; 618 fsp->mode = (mode_t)va.va_mode | getftype(vp->v_type); 619 620 return 1; 621 } 622 623 int 624 msdosfs_filestat(vp, fsp) 625 struct vnode *vp; 626 struct filestat *fsp; 627 { 628 struct denode de; 629 struct msdosfsmount mp; 630 631 if (!KVM_READ(VTONFS(vp), &de, sizeof(de))) { 632 dprintf("can't read denode at %p for pid %d", VTONFS(vp), 633 Pid); 634 return 0; 635 } 636 if (!KVM_READ(de.de_pmp, &mp, sizeof(mp))) { 637 dprintf("can't read mount struct at %p for pid %d", de.de_pmp, 638 Pid); 639 return 0; 640 } 641 642 fsp->fsid = de.de_dev & 0xffff; 643 fsp->fileid = 0; /* XXX see msdosfs_vptofh() for more info */ 644 fsp->size = de.de_FileSize; 645 fsp->rdev = 0; /* msdosfs doesn't support device files */ 646 fsp->mode = (0777 & mp.pm_mask) | getftype(vp->v_type); 647 return 1; 648 } 649 650 char * 651 layer_filestat(vp, fsp) 652 struct vnode *vp; 653 struct filestat *fsp; 654 { 655 struct layer_node layer_node; 656 struct mount mount; 657 struct vnode vn; 658 char *badtype; 659 660 if (!KVM_READ(VTOLAYER(vp), &layer_node, sizeof(layer_node))) { 661 dprintf("can't read layer_node at %p for pid %d", 662 VTOLAYER(vp), Pid); 663 return ("error"); 664 } 665 if (!KVM_READ(vp->v_mount, &mount, sizeof(struct mount))) { 666 dprintf("can't read mount struct at %p for pid %d", 667 vp->v_mount, Pid); 668 return ("error"); 669 } 670 vp = layer_node.layer_lowervp; 671 if (!KVM_READ(vp, &vn, sizeof(struct vnode))) { 672 dprintf("can't read vnode at %p for pid %d", vp, Pid); 673 return ("error"); 674 } 675 if ((badtype = vfilestat(&vn, fsp)) == NULL) 676 fsp->fsid = mount.mnt_stat.f_fsid.val[0]; 677 return (badtype); 678 } 679 680 char * 681 getmnton(m) 682 struct mount *m; 683 { 684 static struct mount mount; 685 static struct mtab { 686 struct mtab *next; 687 struct mount *m; 688 char mntonname[MNAMELEN]; 689 } *mhead = NULL; 690 struct mtab *mt; 691 692 for (mt = mhead; mt != NULL; mt = mt->next) 693 if (m == mt->m) 694 return (mt->mntonname); 695 if (!KVM_READ(m, &mount, sizeof(struct mount))) { 696 warnx("can't read mount table at %p", m); 697 return (NULL); 698 } 699 if ((mt = malloc(sizeof (struct mtab))) == NULL) { 700 err(1, "malloc(%u)", (unsigned int)sizeof(struct mtab)); 701 } 702 mt->m = m; 703 memmove(&mt->mntonname[0], &mount.mnt_stat.f_mntonname[0], MNAMELEN); 704 mt->next = mhead; 705 mhead = mt; 706 return (mt->mntonname); 707 } 708 709 #ifdef INET6 710 static const char * 711 inet6_addrstr(p) 712 struct in6_addr *p; 713 { 714 struct sockaddr_in6 sin6; 715 static char hbuf[NI_MAXHOST]; 716 #ifdef NI_WITHSCOPEID 717 const int niflags = NI_NUMERICHOST | NI_WITHSCOPEID; 718 #else 719 const int niflags = NI_NUMERICHOST; 720 #endif 721 722 memset(&sin6, 0, sizeof(sin6)); 723 sin6.sin6_family = AF_INET6; 724 sin6.sin6_len = sizeof(struct sockaddr_in6); 725 sin6.sin6_addr = *p; 726 if (IN6_IS_ADDR_LINKLOCAL(p) && 727 *(u_int16_t *)&sin6.sin6_addr.s6_addr[2] != 0) { 728 sin6.sin6_scope_id = 729 ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]); 730 sin6.sin6_addr.s6_addr[2] = sin6.sin6_addr.s6_addr[3] = 0; 731 } 732 733 if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, 734 hbuf, sizeof(hbuf), NULL, 0, niflags)) 735 return "invalid"; 736 737 return hbuf; 738 } 739 #endif 740 741 void 742 socktrans(sock, i) 743 struct socket *sock; 744 int i; 745 { 746 static char *stypename[] = { 747 "unused", /* 0 */ 748 "stream", /* 1 */ 749 "dgram", /* 2 */ 750 "raw", /* 3 */ 751 "rdm", /* 4 */ 752 "seqpak" /* 5 */ 753 }; 754 #define STYPEMAX 5 755 struct socket so; 756 struct protosw proto; 757 struct domain dom; 758 struct inpcb inpcb; 759 #ifdef INET6 760 struct in6pcb in6pcb; 761 #endif 762 struct unpcb unpcb; 763 int len; 764 char dname[32]; 765 #ifdef INET6 766 char xaddrbuf[NI_MAXHOST + 2]; 767 #endif 768 769 PREFIX(i); 770 771 /* fill in socket */ 772 if (!KVM_READ(sock, &so, sizeof(struct socket))) { 773 dprintf("can't read sock at %p", sock); 774 goto bad; 775 } 776 777 /* fill in protosw entry */ 778 if (!KVM_READ(so.so_proto, &proto, sizeof(struct protosw))) { 779 dprintf("can't read protosw at %p", so.so_proto); 780 goto bad; 781 } 782 783 /* fill in domain */ 784 if (!KVM_READ(proto.pr_domain, &dom, sizeof(struct domain))) { 785 dprintf("can't read domain at %p", proto.pr_domain); 786 goto bad; 787 } 788 789 if ((len = kvm_read(kd, (u_long)dom.dom_name, dname, 790 sizeof(dname) - 1)) != sizeof(dname) -1) { 791 dprintf("can't read domain name at %p", dom.dom_name); 792 dname[0] = '\0'; 793 } 794 else 795 dname[len] = '\0'; 796 797 if ((u_short)so.so_type > STYPEMAX) 798 printf("* %s ?%d", dname, so.so_type); 799 else 800 printf("* %s %s", dname, stypename[so.so_type]); 801 802 /* 803 * protocol specific formatting 804 * 805 * Try to find interesting things to print. For TCP, the interesting 806 * thing is the address of the tcpcb, for UDP and others, just the 807 * inpcb (socket pcb). For UNIX domain, its the address of the socket 808 * pcb and the address of the connected pcb (if connected). Otherwise 809 * just print the protocol number and address of the socket itself. 810 * The idea is not to duplicate netstat, but to make available enough 811 * information for further analysis. 812 */ 813 switch(dom.dom_family) { 814 case AF_INET: 815 getinetproto(proto.pr_protocol); 816 if (proto.pr_protocol == IPPROTO_TCP) { 817 if (so.so_pcb == NULL) 818 break; 819 if (kvm_read(kd, (u_long)so.so_pcb, (char *)&inpcb, 820 sizeof(struct inpcb)) != sizeof(struct inpcb)) { 821 dprintf("can't read inpcb at %p", so.so_pcb); 822 goto bad; 823 } 824 printf(" %lx", (long)inpcb.inp_ppcb); 825 printf(" %s:%d", 826 inpcb.inp_laddr.s_addr == INADDR_ANY ? "*" : 827 inet_ntoa(inpcb.inp_laddr), ntohs(inpcb.inp_lport)); 828 if (inpcb.inp_fport) { 829 printf(" <-> %s:%d", 830 inpcb.inp_faddr.s_addr == INADDR_ANY ? "*" : 831 inet_ntoa(inpcb.inp_faddr), 832 ntohs(inpcb.inp_fport)); 833 } 834 } else if (proto.pr_protocol == IPPROTO_UDP) { 835 if (so.so_pcb == NULL) 836 break; 837 if (kvm_read(kd, (u_long)so.so_pcb, (char *)&inpcb, 838 sizeof(struct inpcb)) != sizeof(struct inpcb)) { 839 dprintf("can't read inpcb at %p", so.so_pcb); 840 goto bad; 841 } 842 printf(" %lx", (long)so.so_pcb); 843 printf(" %s:%d", 844 inpcb.inp_laddr.s_addr == INADDR_ANY ? "*" : 845 inet_ntoa(inpcb.inp_laddr), ntohs(inpcb.inp_lport)); 846 if (inpcb.inp_fport) 847 printf(" <-> %s:%d", 848 inpcb.inp_faddr.s_addr == INADDR_ANY ? "*" : 849 inet_ntoa(inpcb.inp_faddr), 850 ntohs(inpcb.inp_fport)); 851 } else if (so.so_pcb) 852 printf(" %lx", (long)so.so_pcb); 853 break; 854 #ifdef INET6 855 case AF_INET6: 856 getinetproto(proto.pr_protocol); 857 if (proto.pr_protocol == IPPROTO_TCP) { 858 if (so.so_pcb == NULL) 859 break; 860 if (kvm_read(kd, (u_long)so.so_pcb, (char *)&in6pcb, 861 sizeof(struct in6pcb)) != sizeof(struct in6pcb)) { 862 dprintf("can't read in6pcb at %p", so.so_pcb); 863 goto bad; 864 } 865 printf(" %lx", (long)in6pcb.in6p_ppcb); 866 snprintf(xaddrbuf, sizeof(xaddrbuf), "[%s]", 867 inet6_addrstr(&in6pcb.in6p_laddr)); 868 printf(" %s:%d", 869 IN6_IS_ADDR_UNSPECIFIED(&in6pcb.in6p_laddr) ? "*" : 870 xaddrbuf, 871 ntohs(in6pcb.in6p_lport)); 872 if (in6pcb.in6p_fport) { 873 snprintf(xaddrbuf, sizeof(xaddrbuf), "[%s]", 874 inet6_addrstr(&in6pcb.in6p_faddr)); 875 printf(" <-> %s:%d", 876 IN6_IS_ADDR_UNSPECIFIED(&in6pcb.in6p_faddr) ? "*" : 877 xaddrbuf, 878 ntohs(in6pcb.in6p_fport)); 879 } 880 } else if (proto.pr_protocol == IPPROTO_UDP) { 881 if (so.so_pcb == NULL) 882 break; 883 if (kvm_read(kd, (u_long)so.so_pcb, (char *)&in6pcb, 884 sizeof(struct in6pcb)) != sizeof(struct in6pcb)) { 885 dprintf("can't read inpcb at %p", so.so_pcb); 886 goto bad; 887 } 888 printf(" %lx", (long)so.so_pcb); 889 snprintf(xaddrbuf, sizeof(xaddrbuf), "[%s]", 890 inet6_addrstr(&in6pcb.in6p_laddr)); 891 printf(" %s:%d", 892 IN6_IS_ADDR_UNSPECIFIED(&in6pcb.in6p_laddr) ? "*" : 893 xaddrbuf, 894 ntohs(in6pcb.in6p_lport)); 895 if (in6pcb.in6p_fport) { 896 snprintf(xaddrbuf, sizeof(xaddrbuf), "[%s]", 897 inet6_addrstr(&in6pcb.in6p_faddr)); 898 printf(" <-> %s:%d", 899 IN6_IS_ADDR_UNSPECIFIED(&in6pcb.in6p_faddr) ? "*" : 900 xaddrbuf, 901 ntohs(in6pcb.in6p_fport)); 902 } 903 } else if (so.so_pcb) 904 printf(" %lx", (long)so.so_pcb); 905 break; 906 #endif 907 case AF_LOCAL: 908 /* print address of pcb and connected pcb */ 909 if (so.so_pcb) { 910 printf(" %lx", (long)so.so_pcb); 911 if (kvm_read(kd, (u_long)so.so_pcb, (char *)&unpcb, 912 sizeof(struct unpcb)) != sizeof(struct unpcb)){ 913 dprintf("can't read unpcb at %p", so.so_pcb); 914 goto bad; 915 } 916 if (unpcb.unp_conn) { 917 char shoconn[4], *cp; 918 919 cp = shoconn; 920 if (!(so.so_state & SS_CANTRCVMORE)) 921 *cp++ = '<'; 922 *cp++ = '-'; 923 if (!(so.so_state & SS_CANTSENDMORE)) 924 *cp++ = '>'; 925 *cp = '\0'; 926 printf(" %s %lx", shoconn, 927 (long)unpcb.unp_conn); 928 } 929 } 930 break; 931 default: 932 /* print protocol number and socket address */ 933 printf(" %d %lx", proto.pr_protocol, (long)sock); 934 } 935 printf("\n"); 936 return; 937 bad: 938 printf("* error\n"); 939 } 940 941 void 942 ptrans(fp, cpipe, i) 943 struct file *fp; 944 struct pipe *cpipe; 945 int i; 946 { 947 struct pipe cp; 948 949 PREFIX(i); 950 951 /* fill in pipe */ 952 if (!KVM_READ(cpipe, &cp, sizeof(struct pipe))) { 953 dprintf("can't read pipe at %p", cpipe); 954 goto bad; 955 } 956 957 /* pipe descriptor is either read or write, never both */ 958 printf("* pipe %p %s %p %s%s%s", cpipe, 959 (fp->f_flag & FWRITE) ? "->" : "<-", 960 cp.pipe_peer, 961 (fp->f_flag & FWRITE) ? "w" : "r", 962 (fp->f_flag & FNONBLOCK) ? "n" : "", 963 (cp.pipe_state & PIPE_ASYNC) ? "a" : ""); 964 printf("\n"); 965 return; 966 bad: 967 printf("* error\n"); 968 } 969 970 void 971 kqueuetrans(kq, i) 972 void *kq; 973 int i; 974 { 975 976 PREFIX(i); 977 printf("* kqueue %lx", (long)kq); 978 printf("\n"); 979 } 980 981 /* 982 * getinetproto -- 983 * print name of protocol number 984 */ 985 void 986 getinetproto(number) 987 int number; 988 { 989 char *cp; 990 991 switch (number) { 992 case IPPROTO_IP: 993 cp = "ip"; break; 994 case IPPROTO_ICMP: 995 cp ="icmp"; break; 996 case IPPROTO_GGP: 997 cp ="ggp"; break; 998 case IPPROTO_TCP: 999 cp ="tcp"; break; 1000 case IPPROTO_EGP: 1001 cp ="egp"; break; 1002 case IPPROTO_PUP: 1003 cp ="pup"; break; 1004 case IPPROTO_UDP: 1005 cp ="udp"; break; 1006 case IPPROTO_IDP: 1007 cp ="idp"; break; 1008 case IPPROTO_RAW: 1009 cp ="raw"; break; 1010 case IPPROTO_ICMPV6: 1011 cp ="icmp6"; break; 1012 default: 1013 printf(" %d", number); 1014 return; 1015 } 1016 printf(" %s", cp); 1017 } 1018 1019 int 1020 getfname(filename) 1021 char *filename; 1022 { 1023 struct stat statbuf; 1024 DEVS *cur; 1025 1026 if (stat(filename, &statbuf)) { 1027 warn("stat(%s)", filename); 1028 return(0); 1029 } 1030 if ((cur = malloc(sizeof(DEVS))) == NULL) { 1031 err(1, "malloc(%u)", (unsigned int)sizeof(DEVS)); 1032 } 1033 cur->next = devs; 1034 devs = cur; 1035 1036 cur->ino = statbuf.st_ino; 1037 cur->fsid = statbuf.st_dev & 0xffff; 1038 cur->name = filename; 1039 return(1); 1040 } 1041 1042 mode_t 1043 getftype(v_type) 1044 enum vtype v_type; 1045 { 1046 mode_t ftype; 1047 1048 switch (v_type) { 1049 case VREG: 1050 ftype = S_IFREG; 1051 break; 1052 case VDIR: 1053 ftype = S_IFDIR; 1054 break; 1055 case VBLK: 1056 ftype = S_IFBLK; 1057 break; 1058 case VCHR: 1059 ftype = S_IFCHR; 1060 break; 1061 case VLNK: 1062 ftype = S_IFLNK; 1063 break; 1064 case VSOCK: 1065 ftype = S_IFSOCK; 1066 break; 1067 case VFIFO: 1068 ftype = S_IFIFO; 1069 break; 1070 default: 1071 ftype = 0; 1072 break; 1073 }; 1074 1075 return ftype; 1076 } 1077 1078 void 1079 usage() 1080 { 1081 errx(1, 1082 "usage: fstat [-fnv] [-p pid] [-u user] [-N system] [-M core] [file ...]\n"); 1083 } 1084
Indexes created Sat Sep 20 22:09:52 GMT 2025