fstat.c revision 1.72
1 /* $NetBSD: fstat.c,v 1.72 2005/07/17 07:36:26 christos 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 1.72 2005/07/17 07:36:26 christos 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 const char *name; 122 } DEVS; 123 static DEVS *devs; 124 125 static 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 static int checkfile; /* true if restricting to particular files or filesystems */ 129 static int nflg; /* (numerical) display f.s. and rdev as dev_t */ 130 int vflg; /* display errors in locating kernel data objects etc... */ 131 132 static struct file **ofiles; /* buffer of pointers to file structures */ 133 static 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 static void dofiles(struct kinfo_proc2 *); 148 static int ext2fs_filestat(struct vnode *, struct filestat *); 149 static int getfname(const char *); 150 static void getinetproto(int); 151 static char *getmnton(struct mount *); 152 static const char *layer_filestat(struct vnode *, struct filestat *); 153 static int msdosfs_filestat(struct vnode *, struct filestat *); 154 static int nfs_filestat(struct vnode *, struct filestat *); 155 #ifdef INET6 156 static const char *inet6_addrstr(struct in6_addr *); 157 #endif 158 static void socktrans(struct socket *, int); 159 static void kqueuetrans(void *, int); 160 static int ufs_filestat(struct vnode *, struct filestat *); 161 static void usage(void) __attribute__((__noreturn__)); 162 static const char *vfilestat(struct vnode *, struct filestat *); 163 static void vtrans(struct vnode *, int, int); 164 static void ftrans(struct file *, int); 165 static void ptrans(struct file *, struct pipe *, int); 166 167 int 168 main(int argc, char **argv) 169 { 170 struct passwd *passwd; 171 struct kinfo_proc2 *p, *plast; 172 int arg, ch, what; 173 char *memf, *nlistf; 174 char buf[_POSIX2_LINE_MAX]; 175 int cnt; 176 gid_t egid = getegid(); 177 178 (void)setegid(getgid()); 179 arg = 0; 180 what = KERN_PROC_ALL; 181 nlistf = memf = NULL; 182 while ((ch = getopt(argc, argv, "fnp:u:vN:M:")) != -1) 183 switch((char)ch) { 184 case 'f': 185 fsflg = 1; 186 break; 187 case 'M': 188 memf = optarg; 189 break; 190 case 'N': 191 nlistf = optarg; 192 break; 193 case 'n': 194 nflg = 1; 195 break; 196 case 'p': 197 if (pflg++) 198 usage(); 199 if (!isdigit((unsigned char)*optarg)) { 200 warnx("-p requires a process id"); 201 usage(); 202 } 203 what = KERN_PROC_PID; 204 arg = atoi(optarg); 205 break; 206 case 'u': 207 if (uflg++) 208 usage(); 209 if (!(passwd = getpwnam(optarg))) { 210 errx(1, "%s: unknown uid", optarg); 211 } 212 what = KERN_PROC_UID; 213 arg = passwd->pw_uid; 214 break; 215 case 'v': 216 vflg = 1; 217 break; 218 case '?': 219 default: 220 usage(); 221 } 222 223 if (*(argv += optind)) { 224 for (; *argv; ++argv) { 225 if (getfname(*argv)) 226 checkfile = 1; 227 } 228 if (!checkfile) /* file(s) specified, but none accessible */ 229 exit(1); 230 } 231 232 ALLOC_OFILES(256); /* reserve space for file pointers */ 233 234 if (fsflg && !checkfile) { 235 /* -f with no files means use wd */ 236 if (getfname(".") == 0) 237 exit(1); 238 checkfile = 1; 239 } 240 241 /* 242 * Discard setgid privileges. If not the running kernel, we toss 243 * them away totally so that bad guys can't print interesting stuff 244 * from kernel memory, otherwise switch back to kmem for the 245 * duration of the kvm_openfiles() call. 246 */ 247 if (nlistf != NULL || memf != NULL) 248 (void)setgid(getgid()); 249 else 250 (void)setegid(egid); 251 252 if ((kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, buf)) == NULL) 253 errx(1, "%s", buf); 254 255 /* get rid of it now anyway */ 256 if (nlistf == NULL && memf == NULL) 257 (void)setgid(getgid()); 258 259 if ((p = kvm_getproc2(kd, what, arg, sizeof *p, &cnt)) == NULL) { 260 errx(1, "%s", kvm_geterr(kd)); 261 } 262 if (nflg) 263 (void)printf("%s", 264 "USER CMD PID FD DEV INUM MODE SZ|DV R/W"); 265 else 266 (void)printf("%s", 267 "USER CMD PID FD MOUNT INUM MODE SZ|DV R/W"); 268 if (checkfile && fsflg == 0) 269 (void)printf(" NAME\n"); 270 else 271 (void)putchar('\n'); 272 273 for (plast = &p[cnt]; p < plast; ++p) { 274 if (p->p_stat == SZOMB) 275 continue; 276 dofiles(p); 277 } 278 return 0; 279 } 280 281 static const char *Uname, *Comm; 282 pid_t Pid; 283 284 #define PREFIX(i) (void)printf("%-8.8s %-10s %5d", Uname, Comm, Pid); \ 285 switch(i) { \ 286 case TEXT: \ 287 (void)printf(" text"); \ 288 break; \ 289 case CDIR: \ 290 (void)printf(" wd"); \ 291 break; \ 292 case RDIR: \ 293 (void)printf(" root"); \ 294 break; \ 295 case TRACE: \ 296 (void)printf(" tr"); \ 297 break; \ 298 default: \ 299 (void)printf(" %4d", i); \ 300 break; \ 301 } 302 303 /* 304 * print open files attributed to this process 305 */ 306 static void 307 dofiles(struct kinfo_proc2 *p) 308 { 309 int i; 310 struct filedesc0 filed0; 311 #define filed filed0.fd_fd 312 struct cwdinfo cwdi; 313 314 Uname = user_from_uid(p->p_uid, 0); 315 Pid = p->p_pid; 316 Comm = p->p_comm; 317 318 if (p->p_fd == 0 || p->p_cwdi == 0) 319 return; 320 if (!KVM_READ(p->p_fd, &filed0, sizeof (filed0))) { 321 warnx("can't read filedesc at %#llx for pid %d", (unsigned long long)p->p_fd, Pid); 322 return; 323 } 324 if (!KVM_READ(p->p_cwdi, &cwdi, sizeof(cwdi))) { 325 warnx("can't read cwdinfo at %#llx for pid %d", (unsigned long long)p->p_cwdi, Pid); 326 return; 327 } 328 if (filed.fd_nfiles < 0 || filed.fd_lastfile >= filed.fd_nfiles || 329 filed.fd_freefile > filed.fd_lastfile + 1) { 330 dprintf("filedesc corrupted at %#llx for pid %d", (unsigned long long)p->p_fd, Pid); 331 return; 332 } 333 /* 334 * root directory vnode, if one 335 */ 336 if (cwdi.cwdi_rdir) 337 vtrans(cwdi.cwdi_rdir, RDIR, FREAD); 338 /* 339 * current working directory vnode 340 */ 341 vtrans(cwdi.cwdi_cdir, CDIR, FREAD); 342 /* 343 * ktrace vnode, if one 344 */ 345 if (p->p_tracep) 346 ftrans((struct file *)(intptr_t)p->p_tracep, TRACE); 347 /* 348 * open files 349 */ 350 #define FPSIZE (sizeof (struct file *)) 351 ALLOC_OFILES(filed.fd_lastfile+1); 352 if (filed.fd_nfiles > NDFILE) { 353 if (!KVM_READ(filed.fd_ofiles, ofiles, 354 (filed.fd_lastfile+1) * FPSIZE)) { 355 dprintf("can't read file structures at %p for pid %d", 356 filed.fd_ofiles, Pid); 357 return; 358 } 359 } else 360 (void)memmove(ofiles, filed0.fd_dfiles, 361 (filed.fd_lastfile+1) * FPSIZE); 362 for (i = 0; i <= filed.fd_lastfile; i++) { 363 if (ofiles[i] == NULL) 364 continue; 365 ftrans(ofiles[i], i); 366 } 367 } 368 369 static void 370 ftrans(struct file *fp, int i) 371 { 372 struct file file; 373 374 if (!KVM_READ(fp, &file, sizeof (struct file))) { 375 dprintf("can't read file %d at %p for pid %d", 376 i, fp, Pid); 377 return; 378 } 379 switch (file.f_type) { 380 case DTYPE_VNODE: 381 vtrans((struct vnode *)file.f_data, i, file.f_flag); 382 break; 383 case DTYPE_SOCKET: 384 if (checkfile == 0) 385 socktrans((struct socket *)file.f_data, i); 386 break; 387 case DTYPE_PIPE: 388 if (checkfile == 0) 389 ptrans(&file, (struct pipe *)file.f_data, i); 390 break; 391 case DTYPE_KQUEUE: 392 if (checkfile == 0) 393 kqueuetrans((void *)file.f_data, i); 394 break; 395 default: 396 dprintf("unknown file type %d for file %d of pid %d", 397 file.f_type, i, Pid); 398 break; 399 } 400 } 401 402 static const char * 403 vfilestat(struct vnode *vp, struct filestat *fsp) 404 { 405 const char *badtype = NULL; 406 407 if (vp->v_type == VNON || vp->v_tag == VT_NON) 408 badtype = "none"; 409 else if (vp->v_type == VBAD) 410 badtype = "bad"; 411 else 412 switch (vp->v_tag) { 413 case VT_UFS: 414 case VT_LFS: 415 case VT_MFS: 416 if (!ufs_filestat(vp, fsp)) 417 badtype = "error"; 418 break; 419 case VT_MSDOSFS: 420 if (!msdosfs_filestat(vp, fsp)) 421 badtype = "error"; 422 break; 423 case VT_NFS: 424 if (!nfs_filestat(vp, fsp)) 425 badtype = "error"; 426 break; 427 case VT_EXT2FS: 428 if (!ext2fs_filestat(vp, fsp)) 429 badtype = "error"; 430 break; 431 case VT_ISOFS: 432 if (!isofs_filestat(vp, fsp)) 433 badtype = "error"; 434 break; 435 case VT_NTFS: 436 if (!ntfs_filestat(vp, fsp)) 437 badtype = "error"; 438 break; 439 case VT_PTYFS: 440 if (!ptyfs_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(unknown, sizeof unknown, 451 "?(%x)", vp->v_tag); 452 badtype = unknown; 453 break; 454 } 455 } 456 return (badtype); 457 } 458 459 static void 460 vtrans(struct vnode *vp, int i, int flag) 461 { 462 struct vnode vn; 463 struct filestat fst; 464 char mode[15], rw[3]; 465 const char *badtype, *filename; 466 467 filename = NULL; 468 if (!KVM_READ(vp, &vn, sizeof(struct vnode))) { 469 dprintf("can't read vnode at %p for pid %d", vp, Pid); 470 return; 471 } 472 badtype = vfilestat(&vn, &fst); 473 if (checkfile) { 474 int fsmatch = 0; 475 DEVS *d; 476 477 if (badtype) 478 return; 479 for (d = devs; d != NULL; d = d->next) 480 if (d->fsid == fst.fsid) { 481 fsmatch = 1; 482 if (d->ino == fst.fileid) { 483 filename = d->name; 484 break; 485 } 486 } 487 if (fsmatch == 0 || (filename == NULL && fsflg == 0)) 488 return; 489 } 490 PREFIX(i); 491 if (badtype) { 492 (void)printf(" - - %10s -\n", badtype); 493 return; 494 } 495 if (nflg) 496 (void)printf(" %2d,%-2d", major(fst.fsid), minor(fst.fsid)); 497 else 498 (void)printf(" %-8s", getmnton(vn.v_mount)); 499 if (nflg) 500 (void)snprintf(mode, sizeof mode, "%o", fst.mode); 501 else 502 strmode(fst.mode, mode); 503 (void)printf(" %7lu %*s", (unsigned long)fst.fileid, nflg ? 5 : 10, mode); 504 switch (vn.v_type) { 505 case VBLK: 506 case VCHR: { 507 char *name; 508 509 if (nflg || ((name = devname(fst.rdev, vn.v_type == VCHR ? 510 S_IFCHR : S_IFBLK)) == NULL)) 511 (void)printf(" %2d,%-2d", major(fst.rdev), 512 minor(fst.rdev)); 513 else 514 (void)printf(" %6s", name); 515 break; 516 } 517 default: 518 (void)printf(" %6lld", (long long)fst.size); 519 } 520 rw[0] = '\0'; 521 if (flag & FREAD) 522 (void)strlcat(rw, "r", sizeof(rw)); 523 if (flag & FWRITE) 524 (void)strlcat(rw, "w", sizeof(rw)); 525 (void)printf(" %-2s", rw); 526 if (filename && !fsflg) 527 (void)printf(" %s", filename); 528 (void)putchar('\n'); 529 } 530 531 static int 532 ufs_filestat(struct vnode *vp, struct filestat *fsp) 533 { 534 struct inode inode; 535 union dinode { 536 struct ufs1_dinode dp1; 537 struct ufs2_dinode dp2; 538 } dip; 539 540 if (!KVM_READ(VTOI(vp), &inode, sizeof (inode))) { 541 dprintf("can't read inode at %p for pid %d", VTOI(vp), Pid); 542 return 0; 543 } 544 545 if (!KVM_READ(inode.i_din.ffs1_din, &dip, sizeof(struct ufs1_dinode))) { 546 dprintf("can't read dinode at %p for pid %d", 547 inode.i_din.ffs1_din, Pid); 548 return 0; 549 } 550 if (inode.i_size == dip.dp1.di_size) 551 fsp->rdev = dip.dp1.di_rdev; 552 else { 553 if (!KVM_READ(inode.i_din.ffs1_din, &dip, 554 sizeof(struct ufs2_dinode))) { 555 dprintf("can't read dinode at %p for pid %d", 556 inode.i_din.ffs1_din, Pid); 557 return 0; 558 } 559 fsp->rdev = dip.dp2.di_rdev; 560 } 561 562 fsp->fsid = inode.i_dev & 0xffff; 563 fsp->fileid = (long)inode.i_number; 564 fsp->mode = (mode_t)inode.i_mode; 565 fsp->size = inode.i_size; 566 567 return 1; 568 } 569 570 static int 571 ext2fs_filestat(struct vnode *vp, struct filestat *fsp) 572 { 573 struct inode inode; 574 u_int16_t mode; 575 u_int32_t size; 576 577 if (!KVM_READ(VTOI(vp), &inode, sizeof (inode))) { 578 dprintf("can't read inode at %p for pid %d", VTOI(vp), Pid); 579 return 0; 580 } 581 fsp->fsid = inode.i_dev & 0xffff; 582 fsp->fileid = (long)inode.i_number; 583 584 if (!KVM_READ(&inode.i_e2fs_mode, &mode, sizeof mode)) { 585 dprintf("can't read inode %p's mode at %p for pid %d", VTOI(vp), 586 &inode.i_e2fs_mode, Pid); 587 return 0; 588 } 589 fsp->mode = mode; 590 591 if (!KVM_READ(&inode.i_e2fs_size, &size, sizeof size)) { 592 dprintf("can't read inode %p's size at %p for pid %d", VTOI(vp), 593 &inode.i_e2fs_size, Pid); 594 return 0; 595 } 596 fsp->size = size; 597 fsp->rdev = 0; /* XXX */ 598 return 1; 599 } 600 601 static int 602 nfs_filestat(struct vnode *vp, struct filestat *fsp) 603 { 604 struct nfsnode nfsnode; 605 struct vattr va; 606 607 if (!KVM_READ(VTONFS(vp), &nfsnode, sizeof (nfsnode))) { 608 dprintf("can't read nfsnode at %p for pid %d", VTONFS(vp), 609 Pid); 610 return 0; 611 } 612 if (!KVM_READ(nfsnode.n_vattr, &va, sizeof(va))) { 613 dprintf("can't read vnode attributes at %p for pid %d", 614 nfsnode.n_vattr, Pid); 615 return 0; 616 } 617 fsp->fsid = va.va_fsid; 618 fsp->fileid = va.va_fileid; 619 fsp->size = nfsnode.n_size; 620 fsp->rdev = va.va_rdev; 621 fsp->mode = (mode_t)va.va_mode | getftype(vp->v_type); 622 623 return 1; 624 } 625 626 static int 627 msdosfs_filestat(struct vnode *vp, struct filestat *fsp) 628 { 629 struct denode de; 630 struct msdosfsmount mp; 631 632 if (!KVM_READ(VTONFS(vp), &de, sizeof(de))) { 633 dprintf("can't read denode at %p for pid %d", VTONFS(vp), 634 Pid); 635 return 0; 636 } 637 if (!KVM_READ(de.de_pmp, &mp, sizeof(mp))) { 638 dprintf("can't read mount struct at %p for pid %d", de.de_pmp, 639 Pid); 640 return 0; 641 } 642 643 fsp->fsid = de.de_dev & 0xffff; 644 fsp->fileid = 0; /* XXX see msdosfs_vptofh() for more info */ 645 fsp->size = de.de_FileSize; 646 fsp->rdev = 0; /* msdosfs doesn't support device files */ 647 fsp->mode = (0777 & mp.pm_mask) | getftype(vp->v_type); 648 return 1; 649 } 650 651 static const char * 652 layer_filestat(struct vnode *vp, struct filestat *fsp) 653 { 654 struct layer_node layer_node; 655 struct mount mount; 656 struct vnode vn; 657 const char *badtype; 658 659 if (!KVM_READ(VTOLAYER(vp), &layer_node, sizeof(layer_node))) { 660 dprintf("can't read layer_node at %p for pid %d", 661 VTOLAYER(vp), Pid); 662 return ("error"); 663 } 664 if (!KVM_READ(vp->v_mount, &mount, sizeof(struct mount))) { 665 dprintf("can't read mount struct at %p for pid %d", 666 vp->v_mount, Pid); 667 return ("error"); 668 } 669 vp = layer_node.layer_lowervp; 670 if (!KVM_READ(vp, &vn, sizeof(struct vnode))) { 671 dprintf("can't read vnode at %p for pid %d", vp, Pid); 672 return ("error"); 673 } 674 if ((badtype = vfilestat(&vn, fsp)) == NULL) 675 fsp->fsid = mount.mnt_stat.f_fsidx.__fsid_val[0]; 676 return (badtype); 677 } 678 679 static char * 680 getmnton(struct mount *m) 681 { 682 static struct mount mount; 683 static struct mtab { 684 struct mtab *next; 685 struct mount *m; 686 char mntonname[MNAMELEN]; 687 } *mhead = NULL; 688 struct mtab *mt; 689 690 for (mt = mhead; mt != NULL; mt = mt->next) 691 if (m == mt->m) 692 return (mt->mntonname); 693 if (!KVM_READ(m, &mount, sizeof(struct mount))) { 694 warnx("can't read mount table at %p", m); 695 return (NULL); 696 } 697 if ((mt = malloc(sizeof (struct mtab))) == NULL) { 698 err(1, "malloc(%u)", (unsigned int)sizeof(struct mtab)); 699 } 700 mt->m = m; 701 (void)memmove(&mt->mntonname[0], &mount.mnt_stat.f_mntonname[0], 702 MNAMELEN); 703 mt->next = mhead; 704 mhead = mt; 705 return (mt->mntonname); 706 } 707 708 #ifdef INET6 709 static const char * 710 inet6_addrstr(struct in6_addr *p) 711 { 712 struct sockaddr_in6 sin6; 713 static char hbuf[NI_MAXHOST]; 714 const int niflags = NI_NUMERICHOST; 715 716 (void)memset(&sin6, 0, sizeof(sin6)); 717 sin6.sin6_family = AF_INET6; 718 sin6.sin6_len = sizeof(struct sockaddr_in6); 719 sin6.sin6_addr = *p; 720 if (IN6_IS_ADDR_LINKLOCAL(p) && 721 *(u_int16_t *)&sin6.sin6_addr.s6_addr[2] != 0) { 722 sin6.sin6_scope_id = 723 ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]); 724 sin6.sin6_addr.s6_addr[2] = sin6.sin6_addr.s6_addr[3] = 0; 725 } 726 727 if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, 728 hbuf, sizeof(hbuf), NULL, 0, niflags)) 729 return "invalid"; 730 731 return hbuf; 732 } 733 #endif 734 735 static void 736 socktrans(struct socket *sock, int i) 737 { 738 static const char *stypename[] = { 739 "unused", /* 0 */ 740 "stream", /* 1 */ 741 "dgram", /* 2 */ 742 "raw", /* 3 */ 743 "rdm", /* 4 */ 744 "seqpak" /* 5 */ 745 }; 746 #define STYPEMAX 5 747 struct socket so; 748 struct protosw proto; 749 struct domain dom; 750 struct inpcb inpcb; 751 #ifdef INET6 752 struct in6pcb in6pcb; 753 #endif 754 struct unpcb unpcb; 755 int len; 756 char dname[32]; 757 #ifdef INET6 758 char xaddrbuf[NI_MAXHOST + 2]; 759 #endif 760 761 PREFIX(i); 762 763 /* fill in socket */ 764 if (!KVM_READ(sock, &so, sizeof(struct socket))) { 765 dprintf("can't read sock at %p", sock); 766 goto bad; 767 } 768 769 /* fill in protosw entry */ 770 if (!KVM_READ(so.so_proto, &proto, sizeof(struct protosw))) { 771 dprintf("can't read protosw at %p", so.so_proto); 772 goto bad; 773 } 774 775 /* fill in domain */ 776 if (!KVM_READ(proto.pr_domain, &dom, sizeof(struct domain))) { 777 dprintf("can't read domain at %p", proto.pr_domain); 778 goto bad; 779 } 780 781 if ((len = kvm_read(kd, (u_long)dom.dom_name, dname, 782 sizeof(dname) - 1)) != sizeof(dname) -1) { 783 dprintf("can't read domain name at %p", dom.dom_name); 784 dname[0] = '\0'; 785 } 786 else 787 dname[len] = '\0'; 788 789 if ((u_short)so.so_type > STYPEMAX) 790 (void)printf("* %s ?%d", dname, so.so_type); 791 else 792 (void)printf("* %s %s", dname, stypename[so.so_type]); 793 794 /* 795 * protocol specific formatting 796 * 797 * Try to find interesting things to print. For TCP, the interesting 798 * thing is the address of the tcpcb, for UDP and others, just the 799 * inpcb (socket pcb). For UNIX domain, its the address of the socket 800 * pcb and the address of the connected pcb (if connected). Otherwise 801 * just print the protocol number and address of the socket itself. 802 * The idea is not to duplicate netstat, but to make available enough 803 * information for further analysis. 804 */ 805 switch(dom.dom_family) { 806 case AF_INET: 807 getinetproto(proto.pr_protocol); 808 if (proto.pr_protocol == IPPROTO_TCP) { 809 if (so.so_pcb == NULL) 810 break; 811 if (kvm_read(kd, (u_long)so.so_pcb, (char *)&inpcb, 812 sizeof(struct inpcb)) != sizeof(struct inpcb)) { 813 dprintf("can't read inpcb at %p", so.so_pcb); 814 goto bad; 815 } 816 (void)printf(" %lx", (long)inpcb.inp_ppcb); 817 (void)printf(" %s:%d", 818 inpcb.inp_laddr.s_addr == INADDR_ANY ? "*" : 819 inet_ntoa(inpcb.inp_laddr), ntohs(inpcb.inp_lport)); 820 if (inpcb.inp_fport) { 821 (void)printf(" <-> %s:%d", 822 inpcb.inp_faddr.s_addr == INADDR_ANY ? "*" : 823 inet_ntoa(inpcb.inp_faddr), 824 ntohs(inpcb.inp_fport)); 825 } 826 } else if (proto.pr_protocol == IPPROTO_UDP) { 827 if (so.so_pcb == NULL) 828 break; 829 if (kvm_read(kd, (u_long)so.so_pcb, (char *)&inpcb, 830 sizeof(struct inpcb)) != sizeof(struct inpcb)) { 831 dprintf("can't read inpcb at %p", so.so_pcb); 832 goto bad; 833 } 834 (void)printf(" %lx", (long)so.so_pcb); 835 (void)printf(" %s:%d", 836 inpcb.inp_laddr.s_addr == INADDR_ANY ? "*" : 837 inet_ntoa(inpcb.inp_laddr), ntohs(inpcb.inp_lport)); 838 if (inpcb.inp_fport) 839 (void)printf(" <-> %s:%d", 840 inpcb.inp_faddr.s_addr == INADDR_ANY ? "*" : 841 inet_ntoa(inpcb.inp_faddr), 842 ntohs(inpcb.inp_fport)); 843 } else if (so.so_pcb) 844 (void)printf(" %lx", (long)so.so_pcb); 845 break; 846 #ifdef INET6 847 case AF_INET6: 848 getinetproto(proto.pr_protocol); 849 if (proto.pr_protocol == IPPROTO_TCP) { 850 if (so.so_pcb == NULL) 851 break; 852 if (kvm_read(kd, (u_long)so.so_pcb, (char *)&in6pcb, 853 sizeof(struct in6pcb)) != sizeof(struct in6pcb)) { 854 dprintf("can't read in6pcb at %p", so.so_pcb); 855 goto bad; 856 } 857 (void)printf(" %lx", (long)in6pcb.in6p_ppcb); 858 (void)snprintf(xaddrbuf, sizeof(xaddrbuf), "[%s]", 859 inet6_addrstr(&in6pcb.in6p_laddr)); 860 (void)printf(" %s:%d", 861 IN6_IS_ADDR_UNSPECIFIED(&in6pcb.in6p_laddr) ? "*" : 862 xaddrbuf, 863 ntohs(in6pcb.in6p_lport)); 864 if (in6pcb.in6p_fport) { 865 (void)snprintf(xaddrbuf, sizeof(xaddrbuf), 866 "[%s]", inet6_addrstr(&in6pcb.in6p_faddr)); 867 (void)printf(" <-> %s:%d", 868 IN6_IS_ADDR_UNSPECIFIED(&in6pcb.in6p_faddr) ? "*" : 869 xaddrbuf, 870 ntohs(in6pcb.in6p_fport)); 871 } 872 } else if (proto.pr_protocol == IPPROTO_UDP) { 873 if (so.so_pcb == NULL) 874 break; 875 if (kvm_read(kd, (u_long)so.so_pcb, (char *)&in6pcb, 876 sizeof(struct in6pcb)) != sizeof(struct in6pcb)) { 877 dprintf("can't read inpcb at %p", so.so_pcb); 878 goto bad; 879 } 880 (void)printf(" %lx", (long)so.so_pcb); 881 (void)snprintf(xaddrbuf, sizeof(xaddrbuf), "[%s]", 882 inet6_addrstr(&in6pcb.in6p_laddr)); 883 (void)printf(" %s:%d", 884 IN6_IS_ADDR_UNSPECIFIED(&in6pcb.in6p_laddr) ? "*" : 885 xaddrbuf, 886 ntohs(in6pcb.in6p_lport)); 887 if (in6pcb.in6p_fport) { 888 (void)snprintf(xaddrbuf, sizeof(xaddrbuf), "[%s]", 889 inet6_addrstr(&in6pcb.in6p_faddr)); 890 (void)printf(" <-> %s:%d", 891 IN6_IS_ADDR_UNSPECIFIED(&in6pcb.in6p_faddr) ? "*" : 892 xaddrbuf, 893 ntohs(in6pcb.in6p_fport)); 894 } 895 } else if (so.so_pcb) 896 (void)printf(" %lx", (long)so.so_pcb); 897 break; 898 #endif 899 case AF_LOCAL: 900 /* print address of pcb and connected pcb */ 901 if (so.so_pcb) { 902 (void)printf(" %lx", (long)so.so_pcb); 903 if (kvm_read(kd, (u_long)so.so_pcb, (char *)&unpcb, 904 sizeof(struct unpcb)) != sizeof(struct unpcb)){ 905 dprintf("can't read unpcb at %p", so.so_pcb); 906 goto bad; 907 } 908 if (unpcb.unp_conn) { 909 char shoconn[4], *cp; 910 911 cp = shoconn; 912 if (!(so.so_state & SS_CANTRCVMORE)) 913 *cp++ = '<'; 914 *cp++ = '-'; 915 if (!(so.so_state & SS_CANTSENDMORE)) 916 *cp++ = '>'; 917 *cp = '\0'; 918 (void)printf(" %s %lx", shoconn, 919 (long)unpcb.unp_conn); 920 } 921 } 922 break; 923 default: 924 /* print protocol number and socket address */ 925 (void)printf(" %d %lx", proto.pr_protocol, (long)sock); 926 } 927 (void)printf("\n"); 928 return; 929 bad: 930 (void)printf("* error\n"); 931 } 932 933 static void 934 ptrans(struct file *fp, struct pipe *cpipe, int i) 935 { 936 struct pipe cp; 937 938 PREFIX(i); 939 940 /* fill in pipe */ 941 if (!KVM_READ(cpipe, &cp, sizeof(struct pipe))) { 942 dprintf("can't read pipe at %p", cpipe); 943 goto bad; 944 } 945 946 /* pipe descriptor is either read or write, never both */ 947 (void)printf("* pipe %p %s %p %s%s%s", cpipe, 948 (fp->f_flag & FWRITE) ? "->" : "<-", 949 cp.pipe_peer, 950 (fp->f_flag & FWRITE) ? "w" : "r", 951 (fp->f_flag & FNONBLOCK) ? "n" : "", 952 (cp.pipe_state & PIPE_ASYNC) ? "a" : ""); 953 (void)printf("\n"); 954 return; 955 bad: 956 (void)printf("* error\n"); 957 } 958 959 static void 960 kqueuetrans(void *kq, int i) 961 { 962 963 PREFIX(i); 964 (void)printf("* kqueue %lx", (long)kq); 965 (void)printf("\n"); 966 } 967 968 /* 969 * getinetproto -- 970 * print name of protocol number 971 */ 972 static void 973 getinetproto(int number) 974 { 975 const char *cp; 976 977 switch (number) { 978 case IPPROTO_IP: 979 cp = "ip"; break; 980 case IPPROTO_ICMP: 981 cp ="icmp"; break; 982 case IPPROTO_GGP: 983 cp ="ggp"; break; 984 case IPPROTO_TCP: 985 cp ="tcp"; break; 986 case IPPROTO_EGP: 987 cp ="egp"; break; 988 case IPPROTO_PUP: 989 cp ="pup"; break; 990 case IPPROTO_UDP: 991 cp ="udp"; break; 992 case IPPROTO_IDP: 993 cp ="idp"; break; 994 case IPPROTO_RAW: 995 cp ="raw"; break; 996 case IPPROTO_ICMPV6: 997 cp ="icmp6"; break; 998 default: 999 (void)printf(" %d", number); 1000 return; 1001 } 1002 (void)printf(" %s", cp); 1003 } 1004 1005 static int 1006 getfname(const char *filename) 1007 { 1008 struct stat statbuf; 1009 DEVS *cur; 1010 1011 if (stat(filename, &statbuf)) { 1012 warn("stat(%s)", filename); 1013 return 0; 1014 } 1015 if ((cur = malloc(sizeof(DEVS))) == NULL) { 1016 err(1, "malloc(%u)", (unsigned int)sizeof(DEVS)); 1017 } 1018 cur->next = devs; 1019 devs = cur; 1020 1021 cur->ino = statbuf.st_ino; 1022 cur->fsid = statbuf.st_dev & 0xffff; 1023 cur->name = filename; 1024 return 1; 1025 } 1026 1027 mode_t 1028 getftype(enum vtype v_type) 1029 { 1030 mode_t ftype; 1031 1032 switch (v_type) { 1033 case VREG: 1034 ftype = S_IFREG; 1035 break; 1036 case VDIR: 1037 ftype = S_IFDIR; 1038 break; 1039 case VBLK: 1040 ftype = S_IFBLK; 1041 break; 1042 case VCHR: 1043 ftype = S_IFCHR; 1044 break; 1045 case VLNK: 1046 ftype = S_IFLNK; 1047 break; 1048 case VSOCK: 1049 ftype = S_IFSOCK; 1050 break; 1051 case VFIFO: 1052 ftype = S_IFIFO; 1053 break; 1054 default: 1055 ftype = 0; 1056 break; 1057 }; 1058 1059 return ftype; 1060 } 1061 1062 static void 1063 usage(void) 1064 { 1065 (void)fprintf(stderr, "Usage: %s [-fnv] [-p pid] [-u user] " 1066 "[-N system] [-M core] [file ...]\n", getprogname()); 1067 exit(1); 1068 } 1069
Indexes created Tue Sep 23 23:09:58 GMT 2025