fstat.c revision 1.83
1 /* $NetBSD: fstat.c,v 1.83 2008/07/21 14:19:22 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. 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\ 35 The Regents of the University of California. All rights reserved."); 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 1.83 2008/07/21 14:19:22 lukem Exp $"); 43 #endif 44 #endif /* not lint */ 45 46 #include <sys/types.h> 47 #include <sys/param.h> 48 #include <sys/time.h> 49 #include <sys/proc.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 fdfile_t **ofiles; /* buffer of pointers to file structures */ 133 static int fstat_maxfiles; 134 #define ALLOC_OFILES(d) \ 135 if ((d) > fstat_maxfiles) { \ 136 size_t len = (d) * sizeof(fdfile_t *); \ 137 free(ofiles); \ 138 ofiles = malloc(len); \ 139 if (ofiles == NULL) { \ 140 err(1, "malloc(%zu)", len); \ 141 } \ 142 fstat_maxfiles = (d); \ 143 } 144 145 kvm_t *kd; 146 147 static const char *const dtypes[] = { 148 DTYPE_NAMES 149 }; 150 151 static void dofiles(struct kinfo_proc2 *); 152 static int ext2fs_filestat(struct vnode *, struct filestat *); 153 static int getfname(const char *); 154 static void getinetproto(int); 155 static char *getmnton(struct mount *); 156 static const char *layer_filestat(struct vnode *, struct filestat *); 157 static int msdosfs_filestat(struct vnode *, struct filestat *); 158 static int nfs_filestat(struct vnode *, struct filestat *); 159 #ifdef INET6 160 static const char *inet6_addrstr(struct in6_addr *); 161 #endif 162 static void socktrans(struct socket *, int); 163 static void misctrans(void *, int, const char *); 164 static int ufs_filestat(struct vnode *, struct filestat *); 165 static void usage(void) __dead; 166 static const char *vfilestat(struct vnode *, struct filestat *); 167 static void vtrans(struct vnode *, int, int); 168 static void ftrans(fdfile_t *, int); 169 static void ptrans(struct file *, struct pipe *, int); 170 171 int 172 main(int argc, char **argv) 173 { 174 struct passwd *passwd; 175 struct kinfo_proc2 *p, *plast; 176 int arg, ch, what; 177 char *memf, *nlistf; 178 char buf[_POSIX2_LINE_MAX]; 179 int cnt; 180 gid_t egid = getegid(); 181 182 (void)setegid(getgid()); 183 arg = 0; 184 what = KERN_PROC_ALL; 185 nlistf = memf = NULL; 186 while ((ch = getopt(argc, argv, "fnp:u:vN:M:")) != -1) 187 switch((char)ch) { 188 case 'f': 189 fsflg = 1; 190 break; 191 case 'M': 192 memf = optarg; 193 break; 194 case 'N': 195 nlistf = optarg; 196 break; 197 case 'n': 198 nflg = 1; 199 break; 200 case 'p': 201 if (pflg++) 202 usage(); 203 if (!isdigit((unsigned char)*optarg)) { 204 warnx("-p requires a process id"); 205 usage(); 206 } 207 what = KERN_PROC_PID; 208 arg = atoi(optarg); 209 break; 210 case 'u': 211 if (uflg++) 212 usage(); 213 if (!(passwd = getpwnam(optarg))) { 214 errx(1, "%s: unknown uid", optarg); 215 } 216 what = KERN_PROC_UID; 217 arg = passwd->pw_uid; 218 break; 219 case 'v': 220 vflg = 1; 221 break; 222 case '?': 223 default: 224 usage(); 225 } 226 227 if (*(argv += optind)) { 228 for (; *argv; ++argv) { 229 if (getfname(*argv)) 230 checkfile = 1; 231 } 232 if (!checkfile) /* file(s) specified, but none accessible */ 233 exit(1); 234 } 235 236 ALLOC_OFILES(256); /* reserve space for file pointers */ 237 238 if (fsflg && !checkfile) { 239 /* -f with no files means use wd */ 240 if (getfname(".") == 0) 241 exit(1); 242 checkfile = 1; 243 } 244 245 /* 246 * Discard setgid privileges. If not the running kernel, we toss 247 * them away totally so that bad guys can't print interesting stuff 248 * from kernel memory, otherwise switch back to kmem for the 249 * duration of the kvm_openfiles() call. 250 */ 251 if (nlistf != NULL || memf != NULL) 252 (void)setgid(getgid()); 253 else 254 (void)setegid(egid); 255 256 if ((kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, buf)) == NULL) 257 errx(1, "%s", buf); 258 259 /* get rid of it now anyway */ 260 if (nlistf == NULL && memf == NULL) 261 (void)setgid(getgid()); 262 263 if ((p = kvm_getproc2(kd, what, arg, sizeof *p, &cnt)) == NULL) { 264 errx(1, "%s", kvm_geterr(kd)); 265 } 266 if (nflg) 267 (void)printf("%s", 268 "USER CMD PID FD DEV INUM MODE SZ|DV R/W"); 269 else 270 (void)printf("%s", 271 "USER CMD PID FD MOUNT INUM MODE SZ|DV R/W"); 272 if (checkfile && fsflg == 0) 273 (void)printf(" NAME\n"); 274 else 275 (void)putchar('\n'); 276 277 for (plast = &p[cnt]; p < plast; ++p) { 278 if (p->p_stat == SZOMB) 279 continue; 280 dofiles(p); 281 } 282 return 0; 283 } 284 285 static const char *Uname, *Comm; 286 pid_t Pid; 287 288 #define PREFIX(i) (void)printf("%-8.8s %-10s %5d", Uname, Comm, Pid); \ 289 switch(i) { \ 290 case TEXT: \ 291 (void)printf(" text"); \ 292 break; \ 293 case CDIR: \ 294 (void)printf(" wd"); \ 295 break; \ 296 case RDIR: \ 297 (void)printf(" root"); \ 298 break; \ 299 case TRACE: \ 300 (void)printf(" tr"); \ 301 break; \ 302 default: \ 303 (void)printf(" %4d", i); \ 304 break; \ 305 } 306 307 /* 308 * print open files attributed to this process 309 */ 310 static void 311 dofiles(struct kinfo_proc2 *p) 312 { 313 int i; 314 struct filedesc filed; 315 struct cwdinfo cwdi; 316 317 Uname = user_from_uid(p->p_uid, 0); 318 Pid = p->p_pid; 319 Comm = p->p_comm; 320 321 if (p->p_fd == 0 || p->p_cwdi == 0) 322 return; 323 if (!KVM_READ(p->p_fd, &filed, sizeof (filed))) { 324 warnx("can't read filedesc at %#llx for pid %d", (unsigned long long)p->p_fd, Pid); 325 return; 326 } 327 if (!KVM_READ(p->p_cwdi, &cwdi, sizeof(cwdi))) { 328 warnx("can't read cwdinfo at %#llx for pid %d", (unsigned long long)p->p_cwdi, Pid); 329 return; 330 } 331 if (filed.fd_nfiles < 0 || filed.fd_lastfile >= filed.fd_nfiles || 332 filed.fd_freefile > filed.fd_lastfile + 1) { 333 dprintf("filedesc corrupted at %#llx for pid %d", (unsigned long long)p->p_fd, Pid); 334 return; 335 } 336 /* 337 * root directory vnode, if one 338 */ 339 if (cwdi.cwdi_rdir) 340 vtrans(cwdi.cwdi_rdir, RDIR, FREAD); 341 /* 342 * current working directory vnode 343 */ 344 vtrans(cwdi.cwdi_cdir, CDIR, FREAD); 345 #if 0 346 /* 347 * Disable for now, since p->p_tracep appears to point to a ktr_desc * 348 * ktrace vnode, if one 349 */ 350 if (p->p_tracep) 351 ftrans((struct file *)(intptr_t)p->p_tracep, TRACE); 352 #endif 353 /* 354 * open files 355 */ 356 #define FPSIZE (sizeof (fdfile_t *)) 357 ALLOC_OFILES(filed.fd_lastfile+1); 358 if (!KVM_READ(filed.fd_ofiles, ofiles, 359 (filed.fd_lastfile+1) * FPSIZE)) { 360 dprintf("can't read file structures at %p for pid %d", 361 filed.fd_ofiles, Pid); 362 return; 363 } 364 for (i = 0; i <= filed.fd_lastfile; i++) { 365 if (ofiles[i] == NULL) 366 continue; 367 ftrans(ofiles[i], i); 368 } 369 } 370 371 static void 372 ftrans(fdfile_t *fp, int i) 373 { 374 struct file file; 375 fdfile_t fdfile; 376 377 if (!KVM_READ(fp, &fdfile, sizeof(fdfile))) { 378 dprintf("can't read file %d at %p for pid %d", 379 i, fp, Pid); 380 return; 381 } 382 if (fdfile.ff_file == NULL) 383 return; 384 if (!KVM_READ(fdfile.ff_file, &file, sizeof(file))) { 385 dprintf("can't read file %d at %p for pid %d", 386 i, fdfile.ff_file, Pid); 387 return; 388 } 389 switch (file.f_type) { 390 case DTYPE_VNODE: 391 vtrans((struct vnode *)file.f_data, i, file.f_flag); 392 break; 393 case DTYPE_SOCKET: 394 if (checkfile == 0) 395 socktrans((struct socket *)file.f_data, i); 396 break; 397 case DTYPE_PIPE: 398 if (checkfile == 0) 399 ptrans(&file, (struct pipe *)file.f_data, i); 400 break; 401 case DTYPE_KQUEUE: 402 case DTYPE_MISC: 403 case DTYPE_CRYPTO: 404 case DTYPE_MQUEUE: 405 if (checkfile == 0) 406 misctrans((void *)file.f_data, i, dtypes[file.f_type]); 407 break; 408 default: 409 dprintf("unknown file type %d for file %d of pid %d", 410 file.f_type, i, Pid); 411 break; 412 } 413 } 414 415 static const char * 416 vfilestat(struct vnode *vp, struct filestat *fsp) 417 { 418 const char *badtype = NULL; 419 420 if (vp->v_type == VNON || vp->v_tag == VT_NON) 421 badtype = "none"; 422 else if (vp->v_type == VBAD) 423 badtype = "bad"; 424 else 425 switch (vp->v_tag) { 426 case VT_UFS: 427 case VT_LFS: 428 case VT_MFS: 429 if (!ufs_filestat(vp, fsp)) 430 badtype = "error"; 431 break; 432 case VT_MSDOSFS: 433 if (!msdosfs_filestat(vp, fsp)) 434 badtype = "error"; 435 break; 436 case VT_NFS: 437 if (!nfs_filestat(vp, fsp)) 438 badtype = "error"; 439 break; 440 case VT_EXT2FS: 441 if (!ext2fs_filestat(vp, fsp)) 442 badtype = "error"; 443 break; 444 case VT_ISOFS: 445 if (!isofs_filestat(vp, fsp)) 446 badtype = "error"; 447 break; 448 case VT_NTFS: 449 if (!ntfs_filestat(vp, fsp)) 450 badtype = "error"; 451 break; 452 case VT_PTYFS: 453 if (!ptyfs_filestat(vp, fsp)) 454 badtype = "error"; 455 break; 456 case VT_TMPFS: 457 if (!tmpfs_filestat(vp, fsp)) 458 badtype = "error"; 459 break; 460 case VT_NULL: 461 case VT_OVERLAY: 462 case VT_UMAP: 463 badtype = layer_filestat(vp, fsp); 464 break; 465 default: { 466 static char unknown[10]; 467 (void)snprintf(unknown, sizeof unknown, 468 "?(%x)", vp->v_tag); 469 badtype = unknown; 470 break; 471 } 472 } 473 return (badtype); 474 } 475 476 static void 477 vtrans(struct vnode *vp, int i, int flag) 478 { 479 struct vnode vn; 480 struct filestat fst; 481 char mode[15], rw[3]; 482 const char *badtype, *filename; 483 484 filename = NULL; 485 if (!KVM_READ(vp, &vn, sizeof(struct vnode))) { 486 dprintf("can't read vnode at %p for pid %d", vp, Pid); 487 return; 488 } 489 badtype = vfilestat(&vn, &fst); 490 if (checkfile) { 491 int fsmatch = 0; 492 DEVS *d; 493 494 if (badtype) 495 return; 496 for (d = devs; d != NULL; d = d->next) 497 if (d->fsid == fst.fsid) { 498 fsmatch = 1; 499 if (d->ino == fst.fileid) { 500 filename = d->name; 501 break; 502 } 503 } 504 if (fsmatch == 0 || (filename == NULL && fsflg == 0)) 505 return; 506 } 507 PREFIX(i); 508 if (badtype) { 509 (void)printf(" - - %10s -\n", badtype); 510 return; 511 } 512 if (nflg) 513 (void)printf(" %2d,%-2d", major(fst.fsid), minor(fst.fsid)); 514 else 515 (void)printf(" %-8s", getmnton(vn.v_mount)); 516 if (nflg) 517 (void)snprintf(mode, sizeof mode, "%o", fst.mode); 518 else 519 strmode(fst.mode, mode); 520 (void)printf(" %7lu %*s", (unsigned long)fst.fileid, nflg ? 5 : 10, mode); 521 switch (vn.v_type) { 522 case VBLK: 523 case VCHR: { 524 char *name; 525 526 if (nflg || ((name = devname(fst.rdev, vn.v_type == VCHR ? 527 S_IFCHR : S_IFBLK)) == NULL)) 528 (void)printf(" %2d,%-2d", major(fst.rdev), 529 minor(fst.rdev)); 530 else 531 (void)printf(" %6s", name); 532 break; 533 } 534 default: 535 (void)printf(" %6lld", (long long)fst.size); 536 } 537 rw[0] = '\0'; 538 if (flag & FREAD) 539 (void)strlcat(rw, "r", sizeof(rw)); 540 if (flag & FWRITE) 541 (void)strlcat(rw, "w", sizeof(rw)); 542 (void)printf(" %-2s", rw); 543 if (filename && !fsflg) 544 (void)printf(" %s", filename); 545 (void)putchar('\n'); 546 } 547 548 static int 549 ufs_filestat(struct vnode *vp, struct filestat *fsp) 550 { 551 struct inode inode; 552 union dinode { 553 struct ufs1_dinode dp1; 554 struct ufs2_dinode dp2; 555 } dip; 556 557 if (!KVM_READ(VTOI(vp), &inode, sizeof (inode))) { 558 dprintf("can't read inode at %p for pid %d", VTOI(vp), Pid); 559 return 0; 560 } 561 562 if (!KVM_READ(inode.i_din.ffs1_din, &dip, sizeof(struct ufs1_dinode))) { 563 dprintf("can't read dinode at %p for pid %d", 564 inode.i_din.ffs1_din, Pid); 565 return 0; 566 } 567 if (inode.i_size == dip.dp1.di_size) 568 fsp->rdev = dip.dp1.di_rdev; 569 else { 570 if (!KVM_READ(inode.i_din.ffs1_din, &dip, 571 sizeof(struct ufs2_dinode))) { 572 dprintf("can't read dinode at %p for pid %d", 573 inode.i_din.ffs1_din, Pid); 574 return 0; 575 } 576 fsp->rdev = dip.dp2.di_rdev; 577 } 578 579 fsp->fsid = inode.i_dev & 0xffff; 580 fsp->fileid = (long)inode.i_number; 581 fsp->mode = (mode_t)inode.i_mode; 582 fsp->size = inode.i_size; 583 584 return 1; 585 } 586 587 static int 588 ext2fs_filestat(struct vnode *vp, struct filestat *fsp) 589 { 590 struct inode inode; 591 u_int16_t mode; 592 u_int32_t size; 593 594 if (!KVM_READ(VTOI(vp), &inode, sizeof (inode))) { 595 dprintf("can't read inode at %p for pid %d", VTOI(vp), Pid); 596 return 0; 597 } 598 fsp->fsid = inode.i_dev & 0xffff; 599 fsp->fileid = (long)inode.i_number; 600 601 if (!KVM_READ(&inode.i_e2fs_mode, &mode, sizeof mode)) { 602 dprintf("can't read inode %p's mode at %p for pid %d", VTOI(vp), 603 &inode.i_e2fs_mode, Pid); 604 return 0; 605 } 606 fsp->mode = mode; 607 608 if (!KVM_READ(&inode.i_e2fs_size, &size, sizeof size)) { 609 dprintf("can't read inode %p's size at %p for pid %d", VTOI(vp), 610 &inode.i_e2fs_size, Pid); 611 return 0; 612 } 613 fsp->size = size; 614 fsp->rdev = 0; /* XXX */ 615 return 1; 616 } 617 618 static int 619 nfs_filestat(struct vnode *vp, struct filestat *fsp) 620 { 621 struct nfsnode nfsnode; 622 struct vattr va; 623 624 if (!KVM_READ(VTONFS(vp), &nfsnode, sizeof (nfsnode))) { 625 dprintf("can't read nfsnode at %p for pid %d", VTONFS(vp), 626 Pid); 627 return 0; 628 } 629 if (!KVM_READ(nfsnode.n_vattr, &va, sizeof(va))) { 630 dprintf("can't read vnode attributes at %p for pid %d", 631 nfsnode.n_vattr, Pid); 632 return 0; 633 } 634 fsp->fsid = va.va_fsid; 635 fsp->fileid = va.va_fileid; 636 fsp->size = nfsnode.n_size; 637 fsp->rdev = va.va_rdev; 638 fsp->mode = (mode_t)va.va_mode | getftype(vp->v_type); 639 640 return 1; 641 } 642 643 static int 644 msdosfs_filestat(struct vnode *vp, struct filestat *fsp) 645 { 646 struct denode de; 647 struct msdosfsmount mp; 648 649 if (!KVM_READ(VTONFS(vp), &de, sizeof(de))) { 650 dprintf("can't read denode at %p for pid %d", VTONFS(vp), 651 Pid); 652 return 0; 653 } 654 if (!KVM_READ(de.de_pmp, &mp, sizeof(mp))) { 655 dprintf("can't read mount struct at %p for pid %d", de.de_pmp, 656 Pid); 657 return 0; 658 } 659 660 fsp->fsid = de.de_dev & 0xffff; 661 fsp->fileid = 0; /* XXX see msdosfs_vptofh() for more info */ 662 fsp->size = de.de_FileSize; 663 fsp->rdev = 0; /* msdosfs doesn't support device files */ 664 fsp->mode = (0777 & mp.pm_mask) | getftype(vp->v_type); 665 return 1; 666 } 667 668 static const char * 669 layer_filestat(struct vnode *vp, struct filestat *fsp) 670 { 671 struct layer_node layer_node; 672 struct mount mount; 673 struct vnode vn; 674 const char *badtype; 675 676 if (!KVM_READ(VTOLAYER(vp), &layer_node, sizeof(layer_node))) { 677 dprintf("can't read layer_node at %p for pid %d", 678 VTOLAYER(vp), Pid); 679 return ("error"); 680 } 681 if (!KVM_READ(vp->v_mount, &mount, sizeof(struct mount))) { 682 dprintf("can't read mount struct at %p for pid %d", 683 vp->v_mount, Pid); 684 return ("error"); 685 } 686 vp = layer_node.layer_lowervp; 687 if (!KVM_READ(vp, &vn, sizeof(struct vnode))) { 688 dprintf("can't read vnode at %p for pid %d", vp, Pid); 689 return ("error"); 690 } 691 if ((badtype = vfilestat(&vn, fsp)) == NULL) 692 fsp->fsid = mount.mnt_stat.f_fsidx.__fsid_val[0]; 693 return (badtype); 694 } 695 696 static char * 697 getmnton(struct mount *m) 698 { 699 static struct mount mount; 700 static struct mtab { 701 struct mtab *next; 702 struct mount *m; 703 char mntonname[MNAMELEN]; 704 } *mhead = NULL; 705 struct mtab *mt; 706 707 for (mt = mhead; mt != NULL; mt = mt->next) 708 if (m == mt->m) 709 return (mt->mntonname); 710 if (!KVM_READ(m, &mount, sizeof(struct mount))) { 711 warnx("can't read mount table at %p", m); 712 return (NULL); 713 } 714 if ((mt = malloc(sizeof (struct mtab))) == NULL) { 715 err(1, "malloc(%u)", (unsigned int)sizeof(struct mtab)); 716 } 717 mt->m = m; 718 (void)memmove(&mt->mntonname[0], &mount.mnt_stat.f_mntonname[0], 719 MNAMELEN); 720 mt->next = mhead; 721 mhead = mt; 722 return (mt->mntonname); 723 } 724 725 #ifdef INET6 726 static const char * 727 inet6_addrstr(struct in6_addr *p) 728 { 729 struct sockaddr_in6 sin6; 730 static char hbuf[NI_MAXHOST]; 731 const int niflags = NI_NUMERICHOST; 732 733 (void)memset(&sin6, 0, sizeof(sin6)); 734 sin6.sin6_family = AF_INET6; 735 sin6.sin6_len = sizeof(struct sockaddr_in6); 736 sin6.sin6_addr = *p; 737 if (IN6_IS_ADDR_LINKLOCAL(p) && 738 *(u_int16_t *)&sin6.sin6_addr.s6_addr[2] != 0) { 739 sin6.sin6_scope_id = 740 ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]); 741 sin6.sin6_addr.s6_addr[2] = sin6.sin6_addr.s6_addr[3] = 0; 742 } 743 744 if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, 745 hbuf, sizeof(hbuf), NULL, 0, niflags)) 746 return "invalid"; 747 748 return hbuf; 749 } 750 #endif 751 752 static void 753 socktrans(struct socket *sock, int i) 754 { 755 static const char *stypename[] = { 756 "unused", /* 0 */ 757 "stream", /* 1 */ 758 "dgram", /* 2 */ 759 "raw", /* 3 */ 760 "rdm", /* 4 */ 761 "seqpak" /* 5 */ 762 }; 763 #define STYPEMAX 5 764 struct socket so; 765 struct protosw proto; 766 struct domain dom; 767 struct inpcb inpcb; 768 #ifdef INET6 769 struct in6pcb in6pcb; 770 #endif 771 struct unpcb unpcb; 772 int len; 773 char dname[32]; 774 #ifdef INET6 775 char xaddrbuf[NI_MAXHOST + 2]; 776 #endif 777 778 PREFIX(i); 779 780 /* fill in socket */ 781 if (!KVM_READ(sock, &so, sizeof(struct socket))) { 782 dprintf("can't read sock at %p", sock); 783 goto bad; 784 } 785 786 /* fill in protosw entry */ 787 if (!KVM_READ(so.so_proto, &proto, sizeof(struct protosw))) { 788 dprintf("can't read protosw at %p", so.so_proto); 789 goto bad; 790 } 791 792 /* fill in domain */ 793 if (!KVM_READ(proto.pr_domain, &dom, sizeof(struct domain))) { 794 dprintf("can't read domain at %p", proto.pr_domain); 795 goto bad; 796 } 797 798 if ((len = kvm_read(kd, (u_long)dom.dom_name, dname, 799 sizeof(dname) - 1)) != sizeof(dname) -1) { 800 dprintf("can't read domain name at %p", dom.dom_name); 801 dname[0] = '\0'; 802 } 803 else 804 dname[len] = '\0'; 805 806 if ((u_short)so.so_type > STYPEMAX) 807 (void)printf("* %s ?%d", dname, so.so_type); 808 else 809 (void)printf("* %s %s", dname, stypename[so.so_type]); 810 811 /* 812 * protocol specific formatting 813 * 814 * Try to find interesting things to print. For TCP, the interesting 815 * thing is the address of the tcpcb, for UDP and others, just the 816 * inpcb (socket pcb). For UNIX domain, its the address of the socket 817 * pcb and the address of the connected pcb (if connected). Otherwise 818 * just print the protocol number and address of the socket itself. 819 * The idea is not to duplicate netstat, but to make available enough 820 * information for further analysis. 821 */ 822 switch(dom.dom_family) { 823 case AF_INET: 824 getinetproto(proto.pr_protocol); 825 if (proto.pr_protocol == IPPROTO_TCP) { 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)inpcb.inp_ppcb); 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 } 843 } else if (proto.pr_protocol == IPPROTO_UDP) { 844 if (so.so_pcb == NULL) 845 break; 846 if (kvm_read(kd, (u_long)so.so_pcb, (char *)&inpcb, 847 sizeof(struct inpcb)) != sizeof(struct inpcb)) { 848 dprintf("can't read inpcb at %p", so.so_pcb); 849 goto bad; 850 } 851 (void)printf(" %lx", (long)so.so_pcb); 852 (void)printf(" %s:%d", 853 inpcb.inp_laddr.s_addr == INADDR_ANY ? "*" : 854 inet_ntoa(inpcb.inp_laddr), ntohs(inpcb.inp_lport)); 855 if (inpcb.inp_fport) 856 (void)printf(" <-> %s:%d", 857 inpcb.inp_faddr.s_addr == INADDR_ANY ? "*" : 858 inet_ntoa(inpcb.inp_faddr), 859 ntohs(inpcb.inp_fport)); 860 } else if (so.so_pcb) 861 (void)printf(" %lx", (long)so.so_pcb); 862 break; 863 #ifdef INET6 864 case AF_INET6: 865 getinetproto(proto.pr_protocol); 866 if (proto.pr_protocol == IPPROTO_TCP) { 867 if (so.so_pcb == NULL) 868 break; 869 if (kvm_read(kd, (u_long)so.so_pcb, (char *)&in6pcb, 870 sizeof(struct in6pcb)) != sizeof(struct in6pcb)) { 871 dprintf("can't read in6pcb at %p", so.so_pcb); 872 goto bad; 873 } 874 (void)printf(" %lx", (long)in6pcb.in6p_ppcb); 875 (void)snprintf(xaddrbuf, sizeof(xaddrbuf), "[%s]", 876 inet6_addrstr(&in6pcb.in6p_laddr)); 877 (void)printf(" %s:%d", 878 IN6_IS_ADDR_UNSPECIFIED(&in6pcb.in6p_laddr) ? "*" : 879 xaddrbuf, 880 ntohs(in6pcb.in6p_lport)); 881 if (in6pcb.in6p_fport) { 882 (void)snprintf(xaddrbuf, sizeof(xaddrbuf), 883 "[%s]", inet6_addrstr(&in6pcb.in6p_faddr)); 884 (void)printf(" <-> %s:%d", 885 IN6_IS_ADDR_UNSPECIFIED(&in6pcb.in6p_faddr) ? "*" : 886 xaddrbuf, 887 ntohs(in6pcb.in6p_fport)); 888 } 889 } else if (proto.pr_protocol == IPPROTO_UDP) { 890 if (so.so_pcb == NULL) 891 break; 892 if (kvm_read(kd, (u_long)so.so_pcb, (char *)&in6pcb, 893 sizeof(struct in6pcb)) != sizeof(struct in6pcb)) { 894 dprintf("can't read inpcb at %p", so.so_pcb); 895 goto bad; 896 } 897 (void)printf(" %lx", (long)so.so_pcb); 898 (void)snprintf(xaddrbuf, sizeof(xaddrbuf), "[%s]", 899 inet6_addrstr(&in6pcb.in6p_laddr)); 900 (void)printf(" %s:%d", 901 IN6_IS_ADDR_UNSPECIFIED(&in6pcb.in6p_laddr) ? "*" : 902 xaddrbuf, 903 ntohs(in6pcb.in6p_lport)); 904 if (in6pcb.in6p_fport) { 905 (void)snprintf(xaddrbuf, sizeof(xaddrbuf), "[%s]", 906 inet6_addrstr(&in6pcb.in6p_faddr)); 907 (void)printf(" <-> %s:%d", 908 IN6_IS_ADDR_UNSPECIFIED(&in6pcb.in6p_faddr) ? "*" : 909 xaddrbuf, 910 ntohs(in6pcb.in6p_fport)); 911 } 912 } else if (so.so_pcb) 913 (void)printf(" %lx", (long)so.so_pcb); 914 break; 915 #endif 916 case AF_LOCAL: 917 /* print address of pcb and connected pcb */ 918 if (so.so_pcb) { 919 (void)printf(" %lx", (long)so.so_pcb); 920 if (kvm_read(kd, (u_long)so.so_pcb, (char *)&unpcb, 921 sizeof(struct unpcb)) != sizeof(struct unpcb)){ 922 dprintf("can't read unpcb at %p", so.so_pcb); 923 goto bad; 924 } 925 if (unpcb.unp_conn) { 926 char shoconn[4], *cp; 927 928 cp = shoconn; 929 if (!(so.so_state & SS_CANTRCVMORE)) 930 *cp++ = '<'; 931 *cp++ = '-'; 932 if (!(so.so_state & SS_CANTSENDMORE)) 933 *cp++ = '>'; 934 *cp = '\0'; 935 (void)printf(" %s %lx", shoconn, 936 (long)unpcb.unp_conn); 937 } 938 } 939 break; 940 default: 941 /* print protocol number and socket address */ 942 (void)printf(" %d %lx", proto.pr_protocol, (long)sock); 943 } 944 (void)printf("\n"); 945 return; 946 bad: 947 (void)printf("* error\n"); 948 } 949 950 static void 951 ptrans(struct file *fp, struct pipe *cpipe, int i) 952 { 953 struct pipe cp; 954 955 PREFIX(i); 956 957 /* fill in pipe */ 958 if (!KVM_READ(cpipe, &cp, sizeof(struct pipe))) { 959 dprintf("can't read pipe at %p", cpipe); 960 goto bad; 961 } 962 963 /* pipe descriptor is either read or write, never both */ 964 (void)printf("* pipe %p %s %p %s%s%s", cpipe, 965 (fp->f_flag & FWRITE) ? "->" : "<-", 966 cp.pipe_peer, 967 (fp->f_flag & FWRITE) ? "w" : "r", 968 (fp->f_flag & FNONBLOCK) ? "n" : "", 969 (cp.pipe_state & PIPE_ASYNC) ? "a" : ""); 970 (void)printf("\n"); 971 return; 972 bad: 973 (void)printf("* error\n"); 974 } 975 976 static void 977 misctrans(void *kq, int i, const char *type) 978 { 979 980 PREFIX(i); 981 (void)printf("* %s %lx", type, (long)kq); 982 (void)printf("\n"); 983 } 984 985 /* 986 * getinetproto -- 987 * print name of protocol number 988 */ 989 static void 990 getinetproto(int number) 991 { 992 const char *cp; 993 994 switch (number) { 995 case IPPROTO_IP: 996 cp = "ip"; break; 997 case IPPROTO_ICMP: 998 cp ="icmp"; break; 999 case IPPROTO_GGP: 1000 cp ="ggp"; break; 1001 case IPPROTO_TCP: 1002 cp ="tcp"; break; 1003 case IPPROTO_EGP: 1004 cp ="egp"; break; 1005 case IPPROTO_PUP: 1006 cp ="pup"; break; 1007 case IPPROTO_UDP: 1008 cp ="udp"; break; 1009 case IPPROTO_IDP: 1010 cp ="idp"; break; 1011 case IPPROTO_RAW: 1012 cp ="raw"; break; 1013 case IPPROTO_ICMPV6: 1014 cp ="icmp6"; break; 1015 default: 1016 (void)printf(" %d", number); 1017 return; 1018 } 1019 (void)printf(" %s", cp); 1020 } 1021 1022 static int 1023 getfname(const char *filename) 1024 { 1025 struct stat statbuf; 1026 DEVS *cur; 1027 1028 if (stat(filename, &statbuf)) { 1029 warn("stat(%s)", filename); 1030 return 0; 1031 } 1032 if ((cur = malloc(sizeof(DEVS))) == NULL) { 1033 err(1, "malloc(%u)", (unsigned int)sizeof(DEVS)); 1034 } 1035 cur->next = devs; 1036 devs = cur; 1037 1038 cur->ino = statbuf.st_ino; 1039 cur->fsid = statbuf.st_dev & 0xffff; 1040 cur->name = filename; 1041 return 1; 1042 } 1043 1044 mode_t 1045 getftype(enum vtype v_type) 1046 { 1047 mode_t ftype; 1048 1049 switch (v_type) { 1050 case VREG: 1051 ftype = S_IFREG; 1052 break; 1053 case VDIR: 1054 ftype = S_IFDIR; 1055 break; 1056 case VBLK: 1057 ftype = S_IFBLK; 1058 break; 1059 case VCHR: 1060 ftype = S_IFCHR; 1061 break; 1062 case VLNK: 1063 ftype = S_IFLNK; 1064 break; 1065 case VSOCK: 1066 ftype = S_IFSOCK; 1067 break; 1068 case VFIFO: 1069 ftype = S_IFIFO; 1070 break; 1071 default: 1072 ftype = 0; 1073 break; 1074 }; 1075 1076 return ftype; 1077 } 1078 1079 static void 1080 usage(void) 1081 { 1082 (void)fprintf(stderr, "Usage: %s [-fnv] [-p pid] [-u user] " 1083 "[-N system] [-M core] [file ...]\n", getprogname()); 1084 exit(1); 1085 } 1086
Indexes created Wed Sep 24 05:09:52 GMT 2025