fstat.c revision 1.77
1 /* $NetBSD: fstat.c,v 1.77 2007/12/15 19:44:50 perry 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 1.77 2007/12/15 19:44:50 perry 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/stat.h> 50 #include <sys/vnode.h> 51 #include <sys/socket.h> 52 #include <sys/socketvar.h> 53 #include <sys/domain.h> 54 #include <sys/protosw.h> 55 #include <sys/unpcb.h> 56 #include <sys/sysctl.h> 57 #include <sys/filedesc.h> 58 #include <sys/pipe.h> 59 #define _KERNEL 60 #include <sys/file.h> 61 #include <ufs/ufs/inode.h> 62 #undef _KERNEL 63 #define _KERNEL 64 #include <sys/mount.h> 65 #undef _KERNEL 66 #define NFS 67 #include <nfs/nfsproto.h> 68 #include <nfs/rpcv2.h> 69 #include <nfs/nfs.h> 70 #include <nfs/nfsnode.h> 71 #undef NFS 72 #include <msdosfs/denode.h> 73 #include <msdosfs/bpb.h> 74 #define _KERNEL 75 #include <msdosfs/msdosfsmount.h> 76 #undef _KERNEL 77 #define _KERNEL 78 #include <miscfs/genfs/layer.h> 79 #undef _KERNEL 80 81 #include <net/route.h> 82 #include <netinet/in.h> 83 #include <netinet/in_systm.h> 84 #include <netinet/ip.h> 85 #include <netinet/in_pcb.h> 86 87 #ifdef INET6 88 #include <netinet/ip6.h> 89 #include <netinet6/ip6_var.h> 90 #include <netinet6/in6_pcb.h> 91 #endif 92 93 #include <netdb.h> 94 #include <arpa/inet.h> 95 96 #include <ctype.h> 97 #include <errno.h> 98 #include <kvm.h> 99 #include <limits.h> 100 #include <nlist.h> 101 #include <paths.h> 102 #include <pwd.h> 103 #include <stdio.h> 104 #include <stdlib.h> 105 #include <string.h> 106 #include <unistd.h> 107 #include <err.h> 108 109 #include "fstat.h" 110 111 #define TEXT -1 112 #define CDIR -2 113 #define RDIR -3 114 #define TRACE -4 115 116 typedef struct devs { 117 struct devs *next; 118 long fsid; 119 ino_t ino; 120 const char *name; 121 } DEVS; 122 static DEVS *devs; 123 124 static int fsflg, /* show files on same filesystem as file(s) argument */ 125 pflg, /* show files open by a particular pid */ 126 uflg; /* show files open by a particular (effective) user */ 127 static int checkfile; /* true if restricting to particular files or filesystems */ 128 static int nflg; /* (numerical) display f.s. and rdev as dev_t */ 129 int vflg; /* display errors in locating kernel data objects etc... */ 130 131 static struct file **ofiles; /* buffer of pointers to file structures */ 132 static int fstat_maxfiles; 133 #define ALLOC_OFILES(d) \ 134 if ((d) > fstat_maxfiles) { \ 135 free(ofiles); \ 136 ofiles = malloc((d) * sizeof(struct file *)); \ 137 if (ofiles == NULL) { \ 138 err(1, "malloc(%u)", (d) * \ 139 (unsigned int)sizeof(struct file *)); \ 140 } \ 141 fstat_maxfiles = (d); \ 142 } 143 144 kvm_t *kd; 145 146 static void dofiles(struct kinfo_proc2 *); 147 static int ext2fs_filestat(struct vnode *, struct filestat *); 148 static int getfname(const char *); 149 static void getinetproto(int); 150 static char *getmnton(struct mount *); 151 static const char *layer_filestat(struct vnode *, struct filestat *); 152 static int msdosfs_filestat(struct vnode *, struct filestat *); 153 static int nfs_filestat(struct vnode *, struct filestat *); 154 #ifdef INET6 155 static const char *inet6_addrstr(struct in6_addr *); 156 #endif 157 static void socktrans(struct socket *, int); 158 static void kqueuetrans(void *, int); 159 static int ufs_filestat(struct vnode *, struct filestat *); 160 static void usage(void) __dead; 161 static const char *vfilestat(struct vnode *, struct filestat *); 162 static void vtrans(struct vnode *, int, int); 163 static void ftrans(struct file *, int); 164 static void ptrans(struct file *, struct pipe *, int); 165 166 int 167 main(int argc, char **argv) 168 { 169 struct passwd *passwd; 170 struct kinfo_proc2 *p, *plast; 171 int arg, ch, what; 172 char *memf, *nlistf; 173 char buf[_POSIX2_LINE_MAX]; 174 int cnt; 175 gid_t egid = getegid(); 176 177 (void)setegid(getgid()); 178 arg = 0; 179 what = KERN_PROC_ALL; 180 nlistf = memf = NULL; 181 while ((ch = getopt(argc, argv, "fnp:u:vN:M:")) != -1) 182 switch((char)ch) { 183 case 'f': 184 fsflg = 1; 185 break; 186 case 'M': 187 memf = optarg; 188 break; 189 case 'N': 190 nlistf = optarg; 191 break; 192 case 'n': 193 nflg = 1; 194 break; 195 case 'p': 196 if (pflg++) 197 usage(); 198 if (!isdigit((unsigned char)*optarg)) { 199 warnx("-p requires a process id"); 200 usage(); 201 } 202 what = KERN_PROC_PID; 203 arg = atoi(optarg); 204 break; 205 case 'u': 206 if (uflg++) 207 usage(); 208 if (!(passwd = getpwnam(optarg))) { 209 errx(1, "%s: unknown uid", optarg); 210 } 211 what = KERN_PROC_UID; 212 arg = passwd->pw_uid; 213 break; 214 case 'v': 215 vflg = 1; 216 break; 217 case '?': 218 default: 219 usage(); 220 } 221 222 if (*(argv += optind)) { 223 for (; *argv; ++argv) { 224 if (getfname(*argv)) 225 checkfile = 1; 226 } 227 if (!checkfile) /* file(s) specified, but none accessible */ 228 exit(1); 229 } 230 231 ALLOC_OFILES(256); /* reserve space for file pointers */ 232 233 if (fsflg && !checkfile) { 234 /* -f with no files means use wd */ 235 if (getfname(".") == 0) 236 exit(1); 237 checkfile = 1; 238 } 239 240 /* 241 * Discard setgid privileges. If not the running kernel, we toss 242 * them away totally so that bad guys can't print interesting stuff 243 * from kernel memory, otherwise switch back to kmem for the 244 * duration of the kvm_openfiles() call. 245 */ 246 if (nlistf != NULL || memf != NULL) 247 (void)setgid(getgid()); 248 else 249 (void)setegid(egid); 250 251 if ((kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, buf)) == NULL) 252 errx(1, "%s", buf); 253 254 /* get rid of it now anyway */ 255 if (nlistf == NULL && memf == NULL) 256 (void)setgid(getgid()); 257 258 if ((p = kvm_getproc2(kd, what, arg, sizeof *p, &cnt)) == NULL) { 259 errx(1, "%s", kvm_geterr(kd)); 260 } 261 if (nflg) 262 (void)printf("%s", 263 "USER CMD PID FD DEV INUM MODE SZ|DV R/W"); 264 else 265 (void)printf("%s", 266 "USER CMD PID FD MOUNT INUM MODE SZ|DV R/W"); 267 if (checkfile && fsflg == 0) 268 (void)printf(" NAME\n"); 269 else 270 (void)putchar('\n'); 271 272 for (plast = &p[cnt]; p < plast; ++p) { 273 if (p->p_stat == SZOMB) 274 continue; 275 dofiles(p); 276 } 277 return 0; 278 } 279 280 static const char *Uname, *Comm; 281 pid_t Pid; 282 283 #define PREFIX(i) (void)printf("%-8.8s %-10s %5d", Uname, Comm, Pid); \ 284 switch(i) { \ 285 case TEXT: \ 286 (void)printf(" text"); \ 287 break; \ 288 case CDIR: \ 289 (void)printf(" wd"); \ 290 break; \ 291 case RDIR: \ 292 (void)printf(" root"); \ 293 break; \ 294 case TRACE: \ 295 (void)printf(" tr"); \ 296 break; \ 297 default: \ 298 (void)printf(" %4d", i); \ 299 break; \ 300 } 301 302 /* 303 * print open files attributed to this process 304 */ 305 static void 306 dofiles(struct kinfo_proc2 *p) 307 { 308 int i; 309 struct filedesc0 filed0; 310 #define filed filed0.fd_fd 311 struct cwdinfo cwdi; 312 313 Uname = user_from_uid(p->p_uid, 0); 314 Pid = p->p_pid; 315 Comm = p->p_comm; 316 317 if (p->p_fd == 0 || p->p_cwdi == 0) 318 return; 319 if (!KVM_READ(p->p_fd, &filed0, sizeof (filed0))) { 320 warnx("can't read filedesc at %#llx for pid %d", (unsigned long long)p->p_fd, Pid); 321 return; 322 } 323 if (!KVM_READ(p->p_cwdi, &cwdi, sizeof(cwdi))) { 324 warnx("can't read cwdinfo at %#llx for pid %d", (unsigned long long)p->p_cwdi, Pid); 325 return; 326 } 327 if (filed.fd_nfiles < 0 || filed.fd_lastfile >= filed.fd_nfiles || 328 filed.fd_freefile > filed.fd_lastfile + 1) { 329 dprintf("filedesc corrupted at %#llx for pid %d", (unsigned long long)p->p_fd, Pid); 330 return; 331 } 332 /* 333 * root directory vnode, if one 334 */ 335 if (cwdi.cwdi_rdir) 336 vtrans(cwdi.cwdi_rdir, RDIR, FREAD); 337 /* 338 * current working directory vnode 339 */ 340 vtrans(cwdi.cwdi_cdir, CDIR, FREAD); 341 /* 342 * ktrace vnode, if one 343 */ 344 if (p->p_tracep) 345 ftrans((struct file *)(intptr_t)p->p_tracep, TRACE); 346 /* 347 * open files 348 */ 349 #define FPSIZE (sizeof (struct file *)) 350 ALLOC_OFILES(filed.fd_lastfile+1); 351 if (!KVM_READ(filed.fd_ofiles, ofiles, 352 (filed.fd_lastfile+1) * FPSIZE)) { 353 dprintf("can't read file structures at %p for pid %d", 354 filed.fd_ofiles, Pid); 355 return; 356 } 357 for (i = 0; i <= filed.fd_lastfile; i++) { 358 if (ofiles[i] == NULL) 359 continue; 360 ftrans(ofiles[i], i); 361 } 362 } 363 364 static void 365 ftrans(struct file *fp, int i) 366 { 367 struct file file; 368 369 if (!KVM_READ(fp, &file, sizeof (struct file))) { 370 dprintf("can't read file %d at %p for pid %d", 371 i, fp, Pid); 372 return; 373 } 374 switch (file.f_type) { 375 case DTYPE_VNODE: 376 vtrans((struct vnode *)file.f_data, i, file.f_flag); 377 break; 378 case DTYPE_SOCKET: 379 if (checkfile == 0) 380 socktrans((struct socket *)file.f_data, i); 381 break; 382 case DTYPE_PIPE: 383 if (checkfile == 0) 384 ptrans(&file, (struct pipe *)file.f_data, i); 385 break; 386 case DTYPE_KQUEUE: 387 if (checkfile == 0) 388 kqueuetrans((void *)file.f_data, i); 389 break; 390 default: 391 dprintf("unknown file type %d for file %d of pid %d", 392 file.f_type, i, Pid); 393 break; 394 } 395 } 396 397 static const char * 398 vfilestat(struct vnode *vp, struct filestat *fsp) 399 { 400 const char *badtype = NULL; 401 402 if (vp->v_type == VNON || vp->v_tag == VT_NON) 403 badtype = "none"; 404 else if (vp->v_type == VBAD) 405 badtype = "bad"; 406 else 407 switch (vp->v_tag) { 408 case VT_UFS: 409 case VT_LFS: 410 case VT_MFS: 411 if (!ufs_filestat(vp, fsp)) 412 badtype = "error"; 413 break; 414 case VT_MSDOSFS: 415 if (!msdosfs_filestat(vp, fsp)) 416 badtype = "error"; 417 break; 418 case VT_NFS: 419 if (!nfs_filestat(vp, fsp)) 420 badtype = "error"; 421 break; 422 case VT_EXT2FS: 423 if (!ext2fs_filestat(vp, fsp)) 424 badtype = "error"; 425 break; 426 case VT_ISOFS: 427 if (!isofs_filestat(vp, fsp)) 428 badtype = "error"; 429 break; 430 case VT_NTFS: 431 if (!ntfs_filestat(vp, fsp)) 432 badtype = "error"; 433 break; 434 case VT_PTYFS: 435 if (!ptyfs_filestat(vp, fsp)) 436 badtype = "error"; 437 break; 438 case VT_TMPFS: 439 if (!tmpfs_filestat(vp, fsp)) 440 badtype = "error"; 441 break; 442 case VT_NULL: 443 case VT_OVERLAY: 444 case VT_UMAP: 445 badtype = layer_filestat(vp, fsp); 446 break; 447 default: { 448 static char unknown[10]; 449 (void)snprintf(unknown, sizeof unknown, 450 "?(%x)", vp->v_tag); 451 badtype = unknown; 452 break; 453 } 454 } 455 return (badtype); 456 } 457 458 static void 459 vtrans(struct vnode *vp, int i, int flag) 460 { 461 struct vnode vn; 462 struct filestat fst; 463 char mode[15], rw[3]; 464 const char *badtype, *filename; 465 466 filename = NULL; 467 if (!KVM_READ(vp, &vn, sizeof(struct vnode))) { 468 dprintf("can't read vnode at %p for pid %d", vp, Pid); 469 return; 470 } 471 badtype = vfilestat(&vn, &fst); 472 if (checkfile) { 473 int fsmatch = 0; 474 DEVS *d; 475 476 if (badtype) 477 return; 478 for (d = devs; d != NULL; d = d->next) 479 if (d->fsid == fst.fsid) { 480 fsmatch = 1; 481 if (d->ino == fst.fileid) { 482 filename = d->name; 483 break; 484 } 485 } 486 if (fsmatch == 0 || (filename == NULL && fsflg == 0)) 487 return; 488 } 489 PREFIX(i); 490 if (badtype) { 491 (void)printf(" - - %10s -\n", badtype); 492 return; 493 } 494 if (nflg) 495 (void)printf(" %2d,%-2d", major(fst.fsid), minor(fst.fsid)); 496 else 497 (void)printf(" %-8s", getmnton(vn.v_mount)); 498 if (nflg) 499 (void)snprintf(mode, sizeof mode, "%o", fst.mode); 500 else 501 strmode(fst.mode, mode); 502 (void)printf(" %7lu %*s", (unsigned long)fst.fileid, nflg ? 5 : 10, mode); 503 switch (vn.v_type) { 504 case VBLK: 505 case VCHR: { 506 char *name; 507 508 if (nflg || ((name = devname(fst.rdev, vn.v_type == VCHR ? 509 S_IFCHR : S_IFBLK)) == NULL)) 510 (void)printf(" %2d,%-2d", major(fst.rdev), 511 minor(fst.rdev)); 512 else 513 (void)printf(" %6s", name); 514 break; 515 } 516 default: 517 (void)printf(" %6lld", (long long)fst.size); 518 } 519 rw[0] = '\0'; 520 if (flag & FREAD) 521 (void)strlcat(rw, "r", sizeof(rw)); 522 if (flag & FWRITE) 523 (void)strlcat(rw, "w", sizeof(rw)); 524 (void)printf(" %-2s", rw); 525 if (filename && !fsflg) 526 (void)printf(" %s", filename); 527 (void)putchar('\n'); 528 } 529 530 static int 531 ufs_filestat(struct vnode *vp, struct filestat *fsp) 532 { 533 struct inode inode; 534 union dinode { 535 struct ufs1_dinode dp1; 536 struct ufs2_dinode dp2; 537 } dip; 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 } 543 544 if (!KVM_READ(inode.i_din.ffs1_din, &dip, sizeof(struct ufs1_dinode))) { 545 dprintf("can't read dinode at %p for pid %d", 546 inode.i_din.ffs1_din, Pid); 547 return 0; 548 } 549 if (inode.i_size == dip.dp1.di_size) 550 fsp->rdev = dip.dp1.di_rdev; 551 else { 552 if (!KVM_READ(inode.i_din.ffs1_din, &dip, 553 sizeof(struct ufs2_dinode))) { 554 dprintf("can't read dinode at %p for pid %d", 555 inode.i_din.ffs1_din, Pid); 556 return 0; 557 } 558 fsp->rdev = dip.dp2.di_rdev; 559 } 560 561 fsp->fsid = inode.i_dev & 0xffff; 562 fsp->fileid = (long)inode.i_number; 563 fsp->mode = (mode_t)inode.i_mode; 564 fsp->size = inode.i_size; 565 566 return 1; 567 } 568 569 static int 570 ext2fs_filestat(struct vnode *vp, struct filestat *fsp) 571 { 572 struct inode inode; 573 u_int16_t mode; 574 u_int32_t size; 575 576 if (!KVM_READ(VTOI(vp), &inode, sizeof (inode))) { 577 dprintf("can't read inode at %p for pid %d", VTOI(vp), Pid); 578 return 0; 579 } 580 fsp->fsid = inode.i_dev & 0xffff; 581 fsp->fileid = (long)inode.i_number; 582 583 if (!KVM_READ(&inode.i_e2fs_mode, &mode, sizeof mode)) { 584 dprintf("can't read inode %p's mode at %p for pid %d", VTOI(vp), 585 &inode.i_e2fs_mode, Pid); 586 return 0; 587 } 588 fsp->mode = mode; 589 590 if (!KVM_READ(&inode.i_e2fs_size, &size, sizeof size)) { 591 dprintf("can't read inode %p's size at %p for pid %d", VTOI(vp), 592 &inode.i_e2fs_size, Pid); 593 return 0; 594 } 595 fsp->size = size; 596 fsp->rdev = 0; /* XXX */ 597 return 1; 598 } 599 600 static int 601 nfs_filestat(struct vnode *vp, struct filestat *fsp) 602 { 603 struct nfsnode nfsnode; 604 struct vattr va; 605 606 if (!KVM_READ(VTONFS(vp), &nfsnode, sizeof (nfsnode))) { 607 dprintf("can't read nfsnode at %p for pid %d", VTONFS(vp), 608 Pid); 609 return 0; 610 } 611 if (!KVM_READ(nfsnode.n_vattr, &va, sizeof(va))) { 612 dprintf("can't read vnode attributes at %p for pid %d", 613 nfsnode.n_vattr, Pid); 614 return 0; 615 } 616 fsp->fsid = va.va_fsid; 617 fsp->fileid = va.va_fileid; 618 fsp->size = nfsnode.n_size; 619 fsp->rdev = va.va_rdev; 620 fsp->mode = (mode_t)va.va_mode | getftype(vp->v_type); 621 622 return 1; 623 } 624 625 static int 626 msdosfs_filestat(struct vnode *vp, 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 static const char * 651 layer_filestat(struct vnode *vp, struct filestat *fsp) 652 { 653 struct layer_node layer_node; 654 struct mount mount; 655 struct vnode vn; 656 const char *badtype; 657 658 if (!KVM_READ(VTOLAYER(vp), &layer_node, sizeof(layer_node))) { 659 dprintf("can't read layer_node at %p for pid %d", 660 VTOLAYER(vp), Pid); 661 return ("error"); 662 } 663 if (!KVM_READ(vp->v_mount, &mount, sizeof(struct mount))) { 664 dprintf("can't read mount struct at %p for pid %d", 665 vp->v_mount, Pid); 666 return ("error"); 667 } 668 vp = layer_node.layer_lowervp; 669 if (!KVM_READ(vp, &vn, sizeof(struct vnode))) { 670 dprintf("can't read vnode at %p for pid %d", vp, Pid); 671 return ("error"); 672 } 673 if ((badtype = vfilestat(&vn, fsp)) == NULL) 674 fsp->fsid = mount.mnt_stat.f_fsidx.__fsid_val[0]; 675 return (badtype); 676 } 677 678 static char * 679 getmnton(struct mount *m) 680 { 681 static struct mount mount; 682 static struct mtab { 683 struct mtab *next; 684 struct mount *m; 685 char mntonname[MNAMELEN]; 686 } *mhead = NULL; 687 struct mtab *mt; 688 689 for (mt = mhead; mt != NULL; mt = mt->next) 690 if (m == mt->m) 691 return (mt->mntonname); 692 if (!KVM_READ(m, &mount, sizeof(struct mount))) { 693 warnx("can't read mount table at %p", m); 694 return (NULL); 695 } 696 if ((mt = malloc(sizeof (struct mtab))) == NULL) { 697 err(1, "malloc(%u)", (unsigned int)sizeof(struct mtab)); 698 } 699 mt->m = m; 700 (void)memmove(&mt->mntonname[0], &mount.mnt_stat.f_mntonname[0], 701 MNAMELEN); 702 mt->next = mhead; 703 mhead = mt; 704 return (mt->mntonname); 705 } 706 707 #ifdef INET6 708 static const char * 709 inet6_addrstr(struct in6_addr *p) 710 { 711 struct sockaddr_in6 sin6; 712 static char hbuf[NI_MAXHOST]; 713 const int niflags = NI_NUMERICHOST; 714 715 (void)memset(&sin6, 0, sizeof(sin6)); 716 sin6.sin6_family = AF_INET6; 717 sin6.sin6_len = sizeof(struct sockaddr_in6); 718 sin6.sin6_addr = *p; 719 if (IN6_IS_ADDR_LINKLOCAL(p) && 720 *(u_int16_t *)&sin6.sin6_addr.s6_addr[2] != 0) { 721 sin6.sin6_scope_id = 722 ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]); 723 sin6.sin6_addr.s6_addr[2] = sin6.sin6_addr.s6_addr[3] = 0; 724 } 725 726 if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, 727 hbuf, sizeof(hbuf), NULL, 0, niflags)) 728 return "invalid"; 729 730 return hbuf; 731 } 732 #endif 733 734 static void 735 socktrans(struct socket *sock, int i) 736 { 737 static const char *stypename[] = { 738 "unused", /* 0 */ 739 "stream", /* 1 */ 740 "dgram", /* 2 */ 741 "raw", /* 3 */ 742 "rdm", /* 4 */ 743 "seqpak" /* 5 */ 744 }; 745 #define STYPEMAX 5 746 struct socket so; 747 struct protosw proto; 748 struct domain dom; 749 struct inpcb inpcb; 750 #ifdef INET6 751 struct in6pcb in6pcb; 752 #endif 753 struct unpcb unpcb; 754 int len; 755 char dname[32]; 756 #ifdef INET6 757 char xaddrbuf[NI_MAXHOST + 2]; 758 #endif 759 760 PREFIX(i); 761 762 /* fill in socket */ 763 if (!KVM_READ(sock, &so, sizeof(struct socket))) { 764 dprintf("can't read sock at %p", sock); 765 goto bad; 766 } 767 768 /* fill in protosw entry */ 769 if (!KVM_READ(so.so_proto, &proto, sizeof(struct protosw))) { 770 dprintf("can't read protosw at %p", so.so_proto); 771 goto bad; 772 } 773 774 /* fill in domain */ 775 if (!KVM_READ(proto.pr_domain, &dom, sizeof(struct domain))) { 776 dprintf("can't read domain at %p", proto.pr_domain); 777 goto bad; 778 } 779 780 if ((len = kvm_read(kd, (u_long)dom.dom_name, dname, 781 sizeof(dname) - 1)) != sizeof(dname) -1) { 782 dprintf("can't read domain name at %p", dom.dom_name); 783 dname[0] = '\0'; 784 } 785 else 786 dname[len] = '\0'; 787 788 if ((u_short)so.so_type > STYPEMAX) 789 (void)printf("* %s ?%d", dname, so.so_type); 790 else 791 (void)printf("* %s %s", dname, stypename[so.so_type]); 792 793 /* 794 * protocol specific formatting 795 * 796 * Try to find interesting things to print. For TCP, the interesting 797 * thing is the address of the tcpcb, for UDP and others, just the 798 * inpcb (socket pcb). For UNIX domain, its the address of the socket 799 * pcb and the address of the connected pcb (if connected). Otherwise 800 * just print the protocol number and address of the socket itself. 801 * The idea is not to duplicate netstat, but to make available enough 802 * information for further analysis. 803 */ 804 switch(dom.dom_family) { 805 case AF_INET: 806 getinetproto(proto.pr_protocol); 807 if (proto.pr_protocol == IPPROTO_TCP) { 808 if (so.so_pcb == NULL) 809 break; 810 if (kvm_read(kd, (u_long)so.so_pcb, (char *)&inpcb, 811 sizeof(struct inpcb)) != sizeof(struct inpcb)) { 812 dprintf("can't read inpcb at %p", so.so_pcb); 813 goto bad; 814 } 815 (void)printf(" %lx", (long)inpcb.inp_ppcb); 816 (void)printf(" %s:%d", 817 inpcb.inp_laddr.s_addr == INADDR_ANY ? "*" : 818 inet_ntoa(inpcb.inp_laddr), ntohs(inpcb.inp_lport)); 819 if (inpcb.inp_fport) { 820 (void)printf(" <-> %s:%d", 821 inpcb.inp_faddr.s_addr == INADDR_ANY ? "*" : 822 inet_ntoa(inpcb.inp_faddr), 823 ntohs(inpcb.inp_fport)); 824 } 825 } else if (proto.pr_protocol == IPPROTO_UDP) { 826 if (so.so_pcb == NULL) 827 break; 828 if (kvm_read(kd, (u_long)so.so_pcb, (char *)&inpcb, 829 sizeof(struct inpcb)) != sizeof(struct inpcb)) { 830 dprintf("can't read inpcb at %p", so.so_pcb); 831 goto bad; 832 } 833 (void)printf(" %lx", (long)so.so_pcb); 834 (void)printf(" %s:%d", 835 inpcb.inp_laddr.s_addr == INADDR_ANY ? "*" : 836 inet_ntoa(inpcb.inp_laddr), ntohs(inpcb.inp_lport)); 837 if (inpcb.inp_fport) 838 (void)printf(" <-> %s:%d", 839 inpcb.inp_faddr.s_addr == INADDR_ANY ? "*" : 840 inet_ntoa(inpcb.inp_faddr), 841 ntohs(inpcb.inp_fport)); 842 } else if (so.so_pcb) 843 (void)printf(" %lx", (long)so.so_pcb); 844 break; 845 #ifdef INET6 846 case AF_INET6: 847 getinetproto(proto.pr_protocol); 848 if (proto.pr_protocol == IPPROTO_TCP) { 849 if (so.so_pcb == NULL) 850 break; 851 if (kvm_read(kd, (u_long)so.so_pcb, (char *)&in6pcb, 852 sizeof(struct in6pcb)) != sizeof(struct in6pcb)) { 853 dprintf("can't read in6pcb at %p", so.so_pcb); 854 goto bad; 855 } 856 (void)printf(" %lx", (long)in6pcb.in6p_ppcb); 857 (void)snprintf(xaddrbuf, sizeof(xaddrbuf), "[%s]", 858 inet6_addrstr(&in6pcb.in6p_laddr)); 859 (void)printf(" %s:%d", 860 IN6_IS_ADDR_UNSPECIFIED(&in6pcb.in6p_laddr) ? "*" : 861 xaddrbuf, 862 ntohs(in6pcb.in6p_lport)); 863 if (in6pcb.in6p_fport) { 864 (void)snprintf(xaddrbuf, sizeof(xaddrbuf), 865 "[%s]", inet6_addrstr(&in6pcb.in6p_faddr)); 866 (void)printf(" <-> %s:%d", 867 IN6_IS_ADDR_UNSPECIFIED(&in6pcb.in6p_faddr) ? "*" : 868 xaddrbuf, 869 ntohs(in6pcb.in6p_fport)); 870 } 871 } else if (proto.pr_protocol == IPPROTO_UDP) { 872 if (so.so_pcb == NULL) 873 break; 874 if (kvm_read(kd, (u_long)so.so_pcb, (char *)&in6pcb, 875 sizeof(struct in6pcb)) != sizeof(struct in6pcb)) { 876 dprintf("can't read inpcb at %p", so.so_pcb); 877 goto bad; 878 } 879 (void)printf(" %lx", (long)so.so_pcb); 880 (void)snprintf(xaddrbuf, sizeof(xaddrbuf), "[%s]", 881 inet6_addrstr(&in6pcb.in6p_laddr)); 882 (void)printf(" %s:%d", 883 IN6_IS_ADDR_UNSPECIFIED(&in6pcb.in6p_laddr) ? "*" : 884 xaddrbuf, 885 ntohs(in6pcb.in6p_lport)); 886 if (in6pcb.in6p_fport) { 887 (void)snprintf(xaddrbuf, sizeof(xaddrbuf), "[%s]", 888 inet6_addrstr(&in6pcb.in6p_faddr)); 889 (void)printf(" <-> %s:%d", 890 IN6_IS_ADDR_UNSPECIFIED(&in6pcb.in6p_faddr) ? "*" : 891 xaddrbuf, 892 ntohs(in6pcb.in6p_fport)); 893 } 894 } else if (so.so_pcb) 895 (void)printf(" %lx", (long)so.so_pcb); 896 break; 897 #endif 898 case AF_LOCAL: 899 /* print address of pcb and connected pcb */ 900 if (so.so_pcb) { 901 (void)printf(" %lx", (long)so.so_pcb); 902 if (kvm_read(kd, (u_long)so.so_pcb, (char *)&unpcb, 903 sizeof(struct unpcb)) != sizeof(struct unpcb)){ 904 dprintf("can't read unpcb at %p", so.so_pcb); 905 goto bad; 906 } 907 if (unpcb.unp_conn) { 908 char shoconn[4], *cp; 909 910 cp = shoconn; 911 if (!(so.so_state & SS_CANTRCVMORE)) 912 *cp++ = '<'; 913 *cp++ = '-'; 914 if (!(so.so_state & SS_CANTSENDMORE)) 915 *cp++ = '>'; 916 *cp = '\0'; 917 (void)printf(" %s %lx", shoconn, 918 (long)unpcb.unp_conn); 919 } 920 } 921 break; 922 default: 923 /* print protocol number and socket address */ 924 (void)printf(" %d %lx", proto.pr_protocol, (long)sock); 925 } 926 (void)printf("\n"); 927 return; 928 bad: 929 (void)printf("* error\n"); 930 } 931 932 static void 933 ptrans(struct file *fp, struct pipe *cpipe, int i) 934 { 935 struct pipe cp; 936 937 PREFIX(i); 938 939 /* fill in pipe */ 940 if (!KVM_READ(cpipe, &cp, sizeof(struct pipe))) { 941 dprintf("can't read pipe at %p", cpipe); 942 goto bad; 943 } 944 945 /* pipe descriptor is either read or write, never both */ 946 (void)printf("* pipe %p %s %p %s%s%s", cpipe, 947 (fp->f_flag & FWRITE) ? "->" : "<-", 948 cp.pipe_peer, 949 (fp->f_flag & FWRITE) ? "w" : "r", 950 (fp->f_flag & FNONBLOCK) ? "n" : "", 951 (cp.pipe_state & PIPE_ASYNC) ? "a" : ""); 952 (void)printf("\n"); 953 return; 954 bad: 955 (void)printf("* error\n"); 956 } 957 958 static void 959 kqueuetrans(void *kq, int i) 960 { 961 962 PREFIX(i); 963 (void)printf("* kqueue %lx", (long)kq); 964 (void)printf("\n"); 965 } 966 967 /* 968 * getinetproto -- 969 * print name of protocol number 970 */ 971 static void 972 getinetproto(int number) 973 { 974 const char *cp; 975 976 switch (number) { 977 case IPPROTO_IP: 978 cp = "ip"; break; 979 case IPPROTO_ICMP: 980 cp ="icmp"; break; 981 case IPPROTO_GGP: 982 cp ="ggp"; break; 983 case IPPROTO_TCP: 984 cp ="tcp"; break; 985 case IPPROTO_EGP: 986 cp ="egp"; break; 987 case IPPROTO_PUP: 988 cp ="pup"; break; 989 case IPPROTO_UDP: 990 cp ="udp"; break; 991 case IPPROTO_IDP: 992 cp ="idp"; break; 993 case IPPROTO_RAW: 994 cp ="raw"; break; 995 case IPPROTO_ICMPV6: 996 cp ="icmp6"; break; 997 default: 998 (void)printf(" %d", number); 999 return; 1000 } 1001 (void)printf(" %s", cp); 1002 } 1003 1004 static int 1005 getfname(const char *filename) 1006 { 1007 struct stat statbuf; 1008 DEVS *cur; 1009 1010 if (stat(filename, &statbuf)) { 1011 warn("stat(%s)", filename); 1012 return 0; 1013 } 1014 if ((cur = malloc(sizeof(DEVS))) == NULL) { 1015 err(1, "malloc(%u)", (unsigned int)sizeof(DEVS)); 1016 } 1017 cur->next = devs; 1018 devs = cur; 1019 1020 cur->ino = statbuf.st_ino; 1021 cur->fsid = statbuf.st_dev & 0xffff; 1022 cur->name = filename; 1023 return 1; 1024 } 1025 1026 mode_t 1027 getftype(enum vtype v_type) 1028 { 1029 mode_t ftype; 1030 1031 switch (v_type) { 1032 case VREG: 1033 ftype = S_IFREG; 1034 break; 1035 case VDIR: 1036 ftype = S_IFDIR; 1037 break; 1038 case VBLK: 1039 ftype = S_IFBLK; 1040 break; 1041 case VCHR: 1042 ftype = S_IFCHR; 1043 break; 1044 case VLNK: 1045 ftype = S_IFLNK; 1046 break; 1047 case VSOCK: 1048 ftype = S_IFSOCK; 1049 break; 1050 case VFIFO: 1051 ftype = S_IFIFO; 1052 break; 1053 default: 1054 ftype = 0; 1055 break; 1056 }; 1057 1058 return ftype; 1059 } 1060 1061 static void 1062 usage(void) 1063 { 1064 (void)fprintf(stderr, "Usage: %s [-fnv] [-p pid] [-u user] " 1065 "[-N system] [-M core] [file ...]\n", getprogname()); 1066 exit(1); 1067 } 1068
Indexes created Sun Sep 21 15:09:59 GMT 2025