fstat.c revision 1.45
1 /* $NetBSD: fstat.c,v 1.45 2001/01/04 23:05:55 lukem 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 1.45 2001/01/04 23:05:55 lukem 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 char *layer_filestat __P((struct vnode *, struct filestat *)); 159 int main __P((int, char **)); 160 int msdosfs_filestat __P((struct vnode *, struct filestat *)); 161 int nfs_filestat __P((struct vnode *, struct filestat *)); 162 #ifdef INET6 163 static const char *inet6_addrstr __P((struct in6_addr *)); 164 #endif 165 void socktrans __P((struct socket *, int)); 166 int ufs_filestat __P((struct vnode *, struct filestat *)); 167 void usage __P((void)); 168 char *vfilestat __P((struct vnode *, struct filestat *)); 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 char * 403 vfilestat(vp, fsp) 404 struct vnode *vp; 405 struct filestat *fsp; 406 { 407 char *badtype = NULL; 408 409 if (vp->v_type == VNON || vp->v_tag == VT_NON) 410 badtype = "none"; 411 else if (vp->v_type == VBAD) 412 badtype = "bad"; 413 else 414 switch (vp->v_tag) { 415 case VT_UFS: 416 if (!ufs_filestat(vp, fsp)) 417 badtype = "error"; 418 break; 419 case VT_MFS: 420 if (!ufs_filestat(vp, fsp)) 421 badtype = "error"; 422 break; 423 case VT_MSDOSFS: 424 if (!msdosfs_filestat(vp, fsp)) 425 badtype = "error"; 426 break; 427 case VT_NFS: 428 if (!nfs_filestat(vp, fsp)) 429 badtype = "error"; 430 break; 431 case VT_EXT2FS: 432 if (!ext2fs_filestat(vp, fsp)) 433 badtype = "error"; 434 break; 435 case VT_ISOFS: 436 if (!isofs_filestat(vp, fsp)) 437 badtype = "error"; 438 break; 439 case VT_NTFS: 440 if (!ntfs_filestat(vp, fsp)) 441 badtype = "error"; 442 break; 443 case VT_NULL: 444 case VT_OVERLAY: 445 case VT_UMAP: 446 badtype = layer_filestat(vp, fsp); 447 break; 448 default: { 449 static char unknown[10]; 450 (void)snprintf(badtype = unknown, sizeof unknown, 451 "?(%x)", vp->v_tag); 452 break; 453 } 454 } 455 return (badtype); 456 } 457 458 void 459 vtrans(vp, i, flag) 460 struct vnode *vp; 461 int i; 462 int flag; 463 { 464 struct vnode vn; 465 struct filestat fst; 466 char mode[15], rw[3]; 467 char *badtype, *filename; 468 469 filename = NULL; 470 if (!KVM_READ(vp, &vn, sizeof(struct vnode))) { 471 dprintf("can't read vnode at %p for pid %d", vp, Pid); 472 return; 473 } 474 badtype = vfilestat(&vn, &fst); 475 if (checkfile) { 476 int fsmatch = 0; 477 DEVS *d; 478 479 if (badtype) 480 return; 481 for (d = devs; d != NULL; d = d->next) 482 if (d->fsid == fst.fsid) { 483 fsmatch = 1; 484 if (d->ino == fst.fileid) { 485 filename = d->name; 486 break; 487 } 488 } 489 if (fsmatch == 0 || (filename == NULL && fsflg == 0)) 490 return; 491 } 492 PREFIX(i); 493 if (badtype) { 494 (void)printf(" - - %10s -\n", badtype); 495 return; 496 } 497 if (nflg) 498 (void)printf(" %2d,%-2d", major(fst.fsid), minor(fst.fsid)); 499 else 500 (void)printf(" %-8s", getmnton(vn.v_mount)); 501 if (nflg) 502 (void)snprintf(mode, sizeof mode, "%o", fst.mode); 503 else 504 strmode(fst.mode, mode); 505 (void)printf(" %6ld %10s", (long)fst.fileid, mode); 506 switch (vn.v_type) { 507 case VBLK: 508 case VCHR: { 509 char *name; 510 511 if (nflg || ((name = devname(fst.rdev, vn.v_type == VCHR ? 512 S_IFCHR : S_IFBLK)) == NULL)) 513 printf(" %2d,%-2d", major(fst.rdev), minor(fst.rdev)); 514 else 515 printf(" %6s", name); 516 break; 517 } 518 default: 519 printf(" %6lld", (long long)fst.size); 520 } 521 rw[0] = '\0'; 522 if (flag & FREAD) 523 strcat(rw, "r"); 524 if (flag & FWRITE) 525 strcat(rw, "w"); 526 printf(" %-2s", rw); 527 if (filename && !fsflg) 528 printf(" %s", filename); 529 putchar('\n'); 530 } 531 532 int 533 ufs_filestat(vp, fsp) 534 struct vnode *vp; 535 struct filestat *fsp; 536 { 537 struct inode inode; 538 539 if (!KVM_READ(VTOI(vp), &inode, sizeof (inode))) { 540 dprintf("can't read inode at %p for pid %d", VTOI(vp), Pid); 541 return 0; 542 } 543 fsp->fsid = inode.i_dev & 0xffff; 544 fsp->fileid = (long)inode.i_number; 545 fsp->mode = (mode_t)inode.i_ffs_mode; 546 fsp->size = inode.i_ffs_size; 547 fsp->rdev = inode.i_ffs_rdev; 548 549 return 1; 550 } 551 552 int 553 ext2fs_filestat(vp, fsp) 554 struct vnode *vp; 555 struct filestat *fsp; 556 { 557 struct inode inode; 558 559 if (!KVM_READ(VTOI(vp), &inode, sizeof (inode))) { 560 dprintf("can't read inode at %p for pid %d", VTOI(vp), Pid); 561 return 0; 562 } 563 fsp->fsid = inode.i_dev & 0xffff; 564 fsp->fileid = (long)inode.i_number; 565 fsp->mode = (mode_t)inode.i_e2fs_mode; 566 fsp->size = inode.i_e2fs_size; 567 fsp->rdev = 0; /* XXX */ 568 return 1; 569 } 570 571 int 572 nfs_filestat(vp, fsp) 573 struct vnode *vp; 574 struct filestat *fsp; 575 { 576 struct nfsnode nfsnode; 577 struct vattr va; 578 579 if (!KVM_READ(VTONFS(vp), &nfsnode, sizeof (nfsnode))) { 580 dprintf("can't read nfsnode at %p for pid %d", VTONFS(vp), 581 Pid); 582 return 0; 583 } 584 if (!KVM_READ(nfsnode.n_vattr, &va, sizeof(va))) { 585 dprintf("can't read vnode attributes at %p for pid %d", 586 nfsnode.n_vattr, Pid); 587 return 0; 588 } 589 fsp->fsid = va.va_fsid; 590 fsp->fileid = va.va_fileid; 591 fsp->size = nfsnode.n_size; 592 fsp->rdev = va.va_rdev; 593 fsp->mode = (mode_t)va.va_mode | getftype(vp->v_type); 594 595 return 1; 596 } 597 598 int 599 msdosfs_filestat(vp, fsp) 600 struct vnode *vp; 601 struct filestat *fsp; 602 { 603 struct denode de; 604 struct msdosfsmount mp; 605 606 if (!KVM_READ(VTONFS(vp), &de, sizeof(de))) { 607 dprintf("can't read denode at %p for pid %d", VTONFS(vp), 608 Pid); 609 return 0; 610 } 611 if (!KVM_READ(de.de_pmp, &mp, sizeof(mp))) { 612 dprintf("can't read mount struct at %p for pid %d", de.de_pmp, 613 Pid); 614 return 0; 615 } 616 617 fsp->fsid = de.de_dev & 0xffff; 618 fsp->fileid = 0; /* XXX see msdosfs_vptofh() for more info */ 619 fsp->size = de.de_FileSize; 620 fsp->rdev = 0; /* msdosfs doesn't support device files */ 621 fsp->mode = (0777 & mp.pm_mask) | getftype(vp->v_type); 622 return 1; 623 } 624 625 char * 626 layer_filestat(vp, fsp) 627 struct vnode *vp; 628 struct filestat *fsp; 629 { 630 struct layer_node layer_node; 631 struct mount mount; 632 struct vnode vn; 633 char *badtype; 634 635 if (!KVM_READ(VTOLAYER(vp), &layer_node, sizeof(layer_node))) { 636 dprintf("can't read layer_node at %p for pid %d", 637 VTOLAYER(vp), Pid); 638 return ("error"); 639 } 640 if (!KVM_READ(vp->v_mount, &mount, sizeof(struct mount))) { 641 dprintf("can't read mount struct at %p for pid %d", 642 vp->v_mount, Pid); 643 return ("error"); 644 } 645 vp = layer_node.layer_lowervp; 646 if (!KVM_READ(vp, &vn, sizeof(struct vnode))) { 647 dprintf("can't read vnode at %p for pid %d", vp, Pid); 648 return ("error"); 649 } 650 if ((badtype = vfilestat(&vn, fsp)) == NULL) 651 fsp->fsid = mount.mnt_stat.f_fsid.val[0]; 652 return (badtype); 653 } 654 655 char * 656 getmnton(m) 657 struct mount *m; 658 { 659 static struct mount mount; 660 static struct mtab { 661 struct mtab *next; 662 struct mount *m; 663 char mntonname[MNAMELEN]; 664 } *mhead = NULL; 665 struct mtab *mt; 666 667 for (mt = mhead; mt != NULL; mt = mt->next) 668 if (m == mt->m) 669 return (mt->mntonname); 670 if (!KVM_READ(m, &mount, sizeof(struct mount))) { 671 warnx("can't read mount table at %p", m); 672 return (NULL); 673 } 674 if ((mt = malloc(sizeof (struct mtab))) == NULL) { 675 err(1, "malloc(%u)", (unsigned int)sizeof(struct mtab)); 676 } 677 mt->m = m; 678 memmove(&mt->mntonname[0], &mount.mnt_stat.f_mntonname[0], MNAMELEN); 679 mt->next = mhead; 680 mhead = mt; 681 return (mt->mntonname); 682 } 683 684 #ifdef INET6 685 static const char * 686 inet6_addrstr(p) 687 struct in6_addr *p; 688 { 689 struct sockaddr_in6 sin6; 690 static char hbuf[NI_MAXHOST]; 691 #ifdef NI_WITHSCOPEID 692 const int niflags = NI_NUMERICHOST | NI_WITHSCOPEID; 693 #else 694 const int niflags = NI_NUMERICHOST; 695 #endif 696 697 memset(&sin6, 0, sizeof(sin6)); 698 sin6.sin6_family = AF_INET6; 699 sin6.sin6_len = sizeof(struct sockaddr_in6); 700 sin6.sin6_addr = *p; 701 if (IN6_IS_ADDR_LINKLOCAL(p) && 702 *(u_int16_t *)&sin6.sin6_addr.s6_addr[2] != 0) { 703 sin6.sin6_scope_id = 704 ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]); 705 sin6.sin6_addr.s6_addr[2] = sin6.sin6_addr.s6_addr[3] = 0; 706 } 707 708 if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, 709 hbuf, sizeof(hbuf), NULL, 0, niflags)) 710 return "invalid"; 711 712 return hbuf; 713 } 714 #endif 715 716 void 717 socktrans(sock, i) 718 struct socket *sock; 719 int i; 720 { 721 static char *stypename[] = { 722 "unused", /* 0 */ 723 "stream", /* 1 */ 724 "dgram", /* 2 */ 725 "raw", /* 3 */ 726 "rdm", /* 4 */ 727 "seqpak" /* 5 */ 728 }; 729 #define STYPEMAX 5 730 struct socket so; 731 struct protosw proto; 732 struct domain dom; 733 struct inpcb inpcb; 734 #ifdef INET6 735 struct in6pcb in6pcb; 736 #endif 737 struct unpcb unpcb; 738 int len; 739 char dname[32]; 740 #ifdef INET6 741 char xaddrbuf[NI_MAXHOST + 2]; 742 #endif 743 744 PREFIX(i); 745 746 /* fill in socket */ 747 if (!KVM_READ(sock, &so, sizeof(struct socket))) { 748 dprintf("can't read sock at %p", sock); 749 goto bad; 750 } 751 752 /* fill in protosw entry */ 753 if (!KVM_READ(so.so_proto, &proto, sizeof(struct protosw))) { 754 dprintf("can't read protosw at %p", so.so_proto); 755 goto bad; 756 } 757 758 /* fill in domain */ 759 if (!KVM_READ(proto.pr_domain, &dom, sizeof(struct domain))) { 760 dprintf("can't read domain at %p", proto.pr_domain); 761 goto bad; 762 } 763 764 if ((len = kvm_read(kd, (u_long)dom.dom_name, dname, 765 sizeof(dname) - 1)) != sizeof(dname) -1) { 766 dprintf("can't read domain name at %p", dom.dom_name); 767 dname[0] = '\0'; 768 } 769 else 770 dname[len] = '\0'; 771 772 if ((u_short)so.so_type > STYPEMAX) 773 printf("* %s ?%d", dname, so.so_type); 774 else 775 printf("* %s %s", dname, stypename[so.so_type]); 776 777 /* 778 * protocol specific formatting 779 * 780 * Try to find interesting things to print. For TCP, the interesting 781 * thing is the address of the tcpcb, for UDP and others, just the 782 * inpcb (socket pcb). For UNIX domain, its the address of the socket 783 * pcb and the address of the connected pcb (if connected). Otherwise 784 * just print the protocol number and address of the socket itself. 785 * The idea is not to duplicate netstat, but to make available enough 786 * information for further analysis. 787 */ 788 switch(dom.dom_family) { 789 case AF_INET: 790 getinetproto(proto.pr_protocol); 791 if (proto.pr_protocol == IPPROTO_TCP) { 792 if (so.so_pcb == NULL) 793 break; 794 if (kvm_read(kd, (u_long)so.so_pcb, (char *)&inpcb, 795 sizeof(struct inpcb)) != sizeof(struct inpcb)) { 796 dprintf("can't read inpcb at %p", so.so_pcb); 797 goto bad; 798 } 799 printf(" %lx", (long)inpcb.inp_ppcb); 800 printf(" %s:%d", 801 inpcb.inp_laddr.s_addr == INADDR_ANY ? "*" : 802 inet_ntoa(inpcb.inp_laddr), ntohs(inpcb.inp_lport)); 803 if (inpcb.inp_fport) { 804 printf(" <-> %s:%d", 805 inpcb.inp_faddr.s_addr == INADDR_ANY ? "*" : 806 inet_ntoa(inpcb.inp_faddr), 807 ntohs(inpcb.inp_fport)); 808 } 809 } else if (proto.pr_protocol == IPPROTO_UDP) { 810 if (so.so_pcb == NULL) 811 break; 812 if (kvm_read(kd, (u_long)so.so_pcb, (char *)&inpcb, 813 sizeof(struct inpcb)) != sizeof(struct inpcb)) { 814 dprintf("can't read inpcb at %p", so.so_pcb); 815 goto bad; 816 } 817 printf(" %lx", (long)so.so_pcb); 818 printf(" %s:%d", 819 inpcb.inp_laddr.s_addr == INADDR_ANY ? "*" : 820 inet_ntoa(inpcb.inp_laddr), ntohs(inpcb.inp_lport)); 821 if (inpcb.inp_fport) 822 printf(" <-> %s:%d", 823 inpcb.inp_faddr.s_addr == INADDR_ANY ? "*" : 824 inet_ntoa(inpcb.inp_faddr), 825 ntohs(inpcb.inp_fport)); 826 } else if (so.so_pcb) 827 printf(" %lx", (long)so.so_pcb); 828 break; 829 #ifdef INET6 830 case AF_INET6: 831 getinetproto(proto.pr_protocol); 832 if (proto.pr_protocol == IPPROTO_TCP) { 833 if (so.so_pcb == NULL) 834 break; 835 if (kvm_read(kd, (u_long)so.so_pcb, (char *)&in6pcb, 836 sizeof(struct in6pcb)) != sizeof(struct in6pcb)) { 837 dprintf("can't read in6pcb at %p", so.so_pcb); 838 goto bad; 839 } 840 printf(" %lx", (long)in6pcb.in6p_ppcb); 841 sprintf(xaddrbuf, "[%s]", 842 inet6_addrstr(&in6pcb.in6p_laddr)); 843 printf(" %s:%d", 844 IN6_IS_ADDR_UNSPECIFIED(&in6pcb.in6p_laddr) ? "*" : 845 xaddrbuf, 846 ntohs(in6pcb.in6p_lport)); 847 if (in6pcb.in6p_fport) { 848 sprintf(xaddrbuf, "[%s]", 849 inet6_addrstr(&in6pcb.in6p_faddr)); 850 printf(" <-> %s:%d", 851 IN6_IS_ADDR_UNSPECIFIED(&in6pcb.in6p_faddr) ? "*" : 852 xaddrbuf, 853 ntohs(in6pcb.in6p_fport)); 854 } 855 } else if (proto.pr_protocol == IPPROTO_UDP) { 856 if (so.so_pcb == NULL) 857 break; 858 if (kvm_read(kd, (u_long)so.so_pcb, (char *)&in6pcb, 859 sizeof(struct in6pcb)) != sizeof(struct in6pcb)) { 860 dprintf("can't read inpcb at %p", so.so_pcb); 861 goto bad; 862 } 863 printf(" %lx", (long)so.so_pcb); 864 sprintf(xaddrbuf, "[%s]", 865 inet6_addrstr(&in6pcb.in6p_laddr)); 866 printf(" %s:%d", 867 IN6_IS_ADDR_UNSPECIFIED(&in6pcb.in6p_laddr) ? "*" : 868 xaddrbuf, 869 ntohs(in6pcb.in6p_lport)); 870 if (in6pcb.in6p_fport) { 871 sprintf(xaddrbuf, "[%s]", 872 inet6_addrstr(&in6pcb.in6p_faddr)); 873 printf(" <-> %s:%d", 874 IN6_IS_ADDR_UNSPECIFIED(&in6pcb.in6p_faddr) ? "*" : 875 xaddrbuf, 876 ntohs(in6pcb.in6p_fport)); 877 } 878 } else if (so.so_pcb) 879 printf(" %lx", (long)so.so_pcb); 880 break; 881 #endif 882 case AF_LOCAL: 883 /* print address of pcb and connected pcb */ 884 if (so.so_pcb) { 885 printf(" %lx", (long)so.so_pcb); 886 if (kvm_read(kd, (u_long)so.so_pcb, (char *)&unpcb, 887 sizeof(struct unpcb)) != sizeof(struct unpcb)){ 888 dprintf("can't read unpcb at %p", so.so_pcb); 889 goto bad; 890 } 891 if (unpcb.unp_conn) { 892 char shoconn[4], *cp; 893 894 cp = shoconn; 895 if (!(so.so_state & SS_CANTRCVMORE)) 896 *cp++ = '<'; 897 *cp++ = '-'; 898 if (!(so.so_state & SS_CANTSENDMORE)) 899 *cp++ = '>'; 900 *cp = '\0'; 901 printf(" %s %lx", shoconn, 902 (long)unpcb.unp_conn); 903 } 904 } 905 break; 906 default: 907 /* print protocol number and socket address */ 908 printf(" %d %lx", proto.pr_protocol, (long)sock); 909 } 910 printf("\n"); 911 return; 912 bad: 913 printf("* error\n"); 914 } 915 916 /* 917 * getinetproto -- 918 * print name of protocol number 919 */ 920 void 921 getinetproto(number) 922 int number; 923 { 924 char *cp; 925 926 switch (number) { 927 case IPPROTO_IP: 928 cp = "ip"; break; 929 case IPPROTO_ICMP: 930 cp ="icmp"; break; 931 case IPPROTO_GGP: 932 cp ="ggp"; break; 933 case IPPROTO_TCP: 934 cp ="tcp"; break; 935 case IPPROTO_EGP: 936 cp ="egp"; break; 937 case IPPROTO_PUP: 938 cp ="pup"; break; 939 case IPPROTO_UDP: 940 cp ="udp"; break; 941 case IPPROTO_IDP: 942 cp ="idp"; break; 943 case IPPROTO_RAW: 944 cp ="raw"; break; 945 case IPPROTO_ICMPV6: 946 cp ="icmp6"; break; 947 default: 948 printf(" %d", number); 949 return; 950 } 951 printf(" %s", cp); 952 } 953 954 int 955 getfname(filename) 956 char *filename; 957 { 958 struct stat statbuf; 959 DEVS *cur; 960 961 if (stat(filename, &statbuf)) { 962 warn("stat(%s)", filename); 963 return(0); 964 } 965 if ((cur = malloc(sizeof(DEVS))) == NULL) { 966 err(1, "malloc(%u)", (unsigned int)sizeof(DEVS)); 967 } 968 cur->next = devs; 969 devs = cur; 970 971 cur->ino = statbuf.st_ino; 972 cur->fsid = statbuf.st_dev & 0xffff; 973 cur->name = filename; 974 return(1); 975 } 976 977 mode_t 978 getftype(v_type) 979 enum vtype v_type; 980 { 981 mode_t ftype; 982 983 switch (v_type) { 984 case VREG: 985 ftype = S_IFREG; 986 break; 987 case VDIR: 988 ftype = S_IFDIR; 989 break; 990 case VBLK: 991 ftype = S_IFBLK; 992 break; 993 case VCHR: 994 ftype = S_IFCHR; 995 break; 996 case VLNK: 997 ftype = S_IFLNK; 998 break; 999 case VSOCK: 1000 ftype = S_IFSOCK; 1001 break; 1002 case VFIFO: 1003 ftype = S_IFIFO; 1004 break; 1005 default: 1006 ftype = 0; 1007 break; 1008 }; 1009 1010 return ftype; 1011 } 1012 1013 void 1014 usage() 1015 { 1016 errx(1, 1017 "usage: fstat [-fnv] [-p pid] [-u user] [-N system] [-M core] [file ...]\n"); 1018 } 1019
Indexes created Fri Sep 26 08:10:20 GMT 2025