fstat.c revision 1.81
1 /* $NetBSD: fstat.c,v 1.81 2008/04/04 21:14:08 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 1.81 2008/04/04 21:14:08 christos 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 (!KVM_READ(fdfile.ff_file, &file, sizeof(file))) { 383 dprintf("can't read file %d at %p for pid %d", 384 i, fdfile.ff_file, Pid); 385 return; 386 } 387 switch (file.f_type) { 388 case DTYPE_VNODE: 389 vtrans((struct vnode *)file.f_data, i, file.f_flag); 390 break; 391 case DTYPE_SOCKET: 392 if (checkfile == 0) 393 socktrans((struct socket *)file.f_data, i); 394 break; 395 case DTYPE_PIPE: 396 if (checkfile == 0) 397 ptrans(&file, (struct pipe *)file.f_data, i); 398 break; 399 case DTYPE_KQUEUE: 400 case DTYPE_MISC: 401 case DTYPE_CRYPTO: 402 case DTYPE_MQUEUE: 403 if (checkfile == 0) 404 misctrans((void *)file.f_data, i, dtypes[file.f_type]); 405 break; 406 default: 407 dprintf("unknown file type %d for file %d of pid %d", 408 file.f_type, i, Pid); 409 break; 410 } 411 } 412 413 static const char * 414 vfilestat(struct vnode *vp, struct filestat *fsp) 415 { 416 const char *badtype = NULL; 417 418 if (vp->v_type == VNON || vp->v_tag == VT_NON) 419 badtype = "none"; 420 else if (vp->v_type == VBAD) 421 badtype = "bad"; 422 else 423 switch (vp->v_tag) { 424 case VT_UFS: 425 case VT_LFS: 426 case VT_MFS: 427 if (!ufs_filestat(vp, fsp)) 428 badtype = "error"; 429 break; 430 case VT_MSDOSFS: 431 if (!msdosfs_filestat(vp, fsp)) 432 badtype = "error"; 433 break; 434 case VT_NFS: 435 if (!nfs_filestat(vp, fsp)) 436 badtype = "error"; 437 break; 438 case VT_EXT2FS: 439 if (!ext2fs_filestat(vp, fsp)) 440 badtype = "error"; 441 break; 442 case VT_ISOFS: 443 if (!isofs_filestat(vp, fsp)) 444 badtype = "error"; 445 break; 446 case VT_NTFS: 447 if (!ntfs_filestat(vp, fsp)) 448 badtype = "error"; 449 break; 450 case VT_PTYFS: 451 if (!ptyfs_filestat(vp, fsp)) 452 badtype = "error"; 453 break; 454 case VT_TMPFS: 455 if (!tmpfs_filestat(vp, fsp)) 456 badtype = "error"; 457 break; 458 case VT_NULL: 459 case VT_OVERLAY: 460 case VT_UMAP: 461 badtype = layer_filestat(vp, fsp); 462 break; 463 default: { 464 static char unknown[10]; 465 (void)snprintf(unknown, sizeof unknown, 466 "?(%x)", vp->v_tag); 467 badtype = unknown; 468 break; 469 } 470 } 471 return (badtype); 472 } 473 474 static void 475 vtrans(struct vnode *vp, int i, int flag) 476 { 477 struct vnode vn; 478 struct filestat fst; 479 char mode[15], rw[3]; 480 const char *badtype, *filename; 481 482 filename = NULL; 483 if (!KVM_READ(vp, &vn, sizeof(struct vnode))) { 484 dprintf("can't read vnode at %p for pid %d", vp, Pid); 485 return; 486 } 487 badtype = vfilestat(&vn, &fst); 488 if (checkfile) { 489 int fsmatch = 0; 490 DEVS *d; 491 492 if (badtype) 493 return; 494 for (d = devs; d != NULL; d = d->next) 495 if (d->fsid == fst.fsid) { 496 fsmatch = 1; 497 if (d->ino == fst.fileid) { 498 filename = d->name; 499 break; 500 } 501 } 502 if (fsmatch == 0 || (filename == NULL && fsflg == 0)) 503 return; 504 } 505 PREFIX(i); 506 if (badtype) { 507 (void)printf(" - - %10s -\n", badtype); 508 return; 509 } 510 if (nflg) 511 (void)printf(" %2d,%-2d", major(fst.fsid), minor(fst.fsid)); 512 else 513 (void)printf(" %-8s", getmnton(vn.v_mount)); 514 if (nflg) 515 (void)snprintf(mode, sizeof mode, "%o", fst.mode); 516 else 517 strmode(fst.mode, mode); 518 (void)printf(" %7lu %*s", (unsigned long)fst.fileid, nflg ? 5 : 10, mode); 519 switch (vn.v_type) { 520 case VBLK: 521 case VCHR: { 522 char *name; 523 524 if (nflg || ((name = devname(fst.rdev, vn.v_type == VCHR ? 525 S_IFCHR : S_IFBLK)) == NULL)) 526 (void)printf(" %2d,%-2d", major(fst.rdev), 527 minor(fst.rdev)); 528 else 529 (void)printf(" %6s", name); 530 break; 531 } 532 default: 533 (void)printf(" %6lld", (long long)fst.size); 534 } 535 rw[0] = '\0'; 536 if (flag & FREAD) 537 (void)strlcat(rw, "r", sizeof(rw)); 538 if (flag & FWRITE) 539 (void)strlcat(rw, "w", sizeof(rw)); 540 (void)printf(" %-2s", rw); 541 if (filename && !fsflg) 542 (void)printf(" %s", filename); 543 (void)putchar('\n'); 544 } 545 546 static int 547 ufs_filestat(struct vnode *vp, struct filestat *fsp) 548 { 549 struct inode inode; 550 union dinode { 551 struct ufs1_dinode dp1; 552 struct ufs2_dinode dp2; 553 } dip; 554 555 if (!KVM_READ(VTOI(vp), &inode, sizeof (inode))) { 556 dprintf("can't read inode at %p for pid %d", VTOI(vp), Pid); 557 return 0; 558 } 559 560 if (!KVM_READ(inode.i_din.ffs1_din, &dip, sizeof(struct ufs1_dinode))) { 561 dprintf("can't read dinode at %p for pid %d", 562 inode.i_din.ffs1_din, Pid); 563 return 0; 564 } 565 if (inode.i_size == dip.dp1.di_size) 566 fsp->rdev = dip.dp1.di_rdev; 567 else { 568 if (!KVM_READ(inode.i_din.ffs1_din, &dip, 569 sizeof(struct ufs2_dinode))) { 570 dprintf("can't read dinode at %p for pid %d", 571 inode.i_din.ffs1_din, Pid); 572 return 0; 573 } 574 fsp->rdev = dip.dp2.di_rdev; 575 } 576 577 fsp->fsid = inode.i_dev & 0xffff; 578 fsp->fileid = (long)inode.i_number; 579 fsp->mode = (mode_t)inode.i_mode; 580 fsp->size = inode.i_size; 581 582 return 1; 583 } 584 585 static int 586 ext2fs_filestat(struct vnode *vp, struct filestat *fsp) 587 { 588 struct inode inode; 589 u_int16_t mode; 590 u_int32_t size; 591 592 if (!KVM_READ(VTOI(vp), &inode, sizeof (inode))) { 593 dprintf("can't read inode at %p for pid %d", VTOI(vp), Pid); 594 return 0; 595 } 596 fsp->fsid = inode.i_dev & 0xffff; 597 fsp->fileid = (long)inode.i_number; 598 599 if (!KVM_READ(&inode.i_e2fs_mode, &mode, sizeof mode)) { 600 dprintf("can't read inode %p's mode at %p for pid %d", VTOI(vp), 601 &inode.i_e2fs_mode, Pid); 602 return 0; 603 } 604 fsp->mode = mode; 605 606 if (!KVM_READ(&inode.i_e2fs_size, &size, sizeof size)) { 607 dprintf("can't read inode %p's size at %p for pid %d", VTOI(vp), 608 &inode.i_e2fs_size, Pid); 609 return 0; 610 } 611 fsp->size = size; 612 fsp->rdev = 0; /* XXX */ 613 return 1; 614 } 615 616 static int 617 nfs_filestat(struct vnode *vp, struct filestat *fsp) 618 { 619 struct nfsnode nfsnode; 620 struct vattr va; 621 622 if (!KVM_READ(VTONFS(vp), &nfsnode, sizeof (nfsnode))) { 623 dprintf("can't read nfsnode at %p for pid %d", VTONFS(vp), 624 Pid); 625 return 0; 626 } 627 if (!KVM_READ(nfsnode.n_vattr, &va, sizeof(va))) { 628 dprintf("can't read vnode attributes at %p for pid %d", 629 nfsnode.n_vattr, Pid); 630 return 0; 631 } 632 fsp->fsid = va.va_fsid; 633 fsp->fileid = va.va_fileid; 634 fsp->size = nfsnode.n_size; 635 fsp->rdev = va.va_rdev; 636 fsp->mode = (mode_t)va.va_mode | getftype(vp->v_type); 637 638 return 1; 639 } 640 641 static int 642 msdosfs_filestat(struct vnode *vp, struct filestat *fsp) 643 { 644 struct denode de; 645 struct msdosfsmount mp; 646 647 if (!KVM_READ(VTONFS(vp), &de, sizeof(de))) { 648 dprintf("can't read denode at %p for pid %d", VTONFS(vp), 649 Pid); 650 return 0; 651 } 652 if (!KVM_READ(de.de_pmp, &mp, sizeof(mp))) { 653 dprintf("can't read mount struct at %p for pid %d", de.de_pmp, 654 Pid); 655 return 0; 656 } 657 658 fsp->fsid = de.de_dev & 0xffff; 659 fsp->fileid = 0; /* XXX see msdosfs_vptofh() for more info */ 660 fsp->size = de.de_FileSize; 661 fsp->rdev = 0; /* msdosfs doesn't support device files */ 662 fsp->mode = (0777 & mp.pm_mask) | getftype(vp->v_type); 663 return 1; 664 } 665 666 static const char * 667 layer_filestat(struct vnode *vp, struct filestat *fsp) 668 { 669 struct layer_node layer_node; 670 struct mount mount; 671 struct vnode vn; 672 const char *badtype; 673 674 if (!KVM_READ(VTOLAYER(vp), &layer_node, sizeof(layer_node))) { 675 dprintf("can't read layer_node at %p for pid %d", 676 VTOLAYER(vp), Pid); 677 return ("error"); 678 } 679 if (!KVM_READ(vp->v_mount, &mount, sizeof(struct mount))) { 680 dprintf("can't read mount struct at %p for pid %d", 681 vp->v_mount, Pid); 682 return ("error"); 683 } 684 vp = layer_node.layer_lowervp; 685 if (!KVM_READ(vp, &vn, sizeof(struct vnode))) { 686 dprintf("can't read vnode at %p for pid %d", vp, Pid); 687 return ("error"); 688 } 689 if ((badtype = vfilestat(&vn, fsp)) == NULL) 690 fsp->fsid = mount.mnt_stat.f_fsidx.__fsid_val[0]; 691 return (badtype); 692 } 693 694 static char * 695 getmnton(struct mount *m) 696 { 697 static struct mount mount; 698 static struct mtab { 699 struct mtab *next; 700 struct mount *m; 701 char mntonname[MNAMELEN]; 702 } *mhead = NULL; 703 struct mtab *mt; 704 705 for (mt = mhead; mt != NULL; mt = mt->next) 706 if (m == mt->m) 707 return (mt->mntonname); 708 if (!KVM_READ(m, &mount, sizeof(struct mount))) { 709 warnx("can't read mount table at %p", m); 710 return (NULL); 711 } 712 if ((mt = malloc(sizeof (struct mtab))) == NULL) { 713 err(1, "malloc(%u)", (unsigned int)sizeof(struct mtab)); 714 } 715 mt->m = m; 716 (void)memmove(&mt->mntonname[0], &mount.mnt_stat.f_mntonname[0], 717 MNAMELEN); 718 mt->next = mhead; 719 mhead = mt; 720 return (mt->mntonname); 721 } 722 723 #ifdef INET6 724 static const char * 725 inet6_addrstr(struct in6_addr *p) 726 { 727 struct sockaddr_in6 sin6; 728 static char hbuf[NI_MAXHOST]; 729 const int niflags = NI_NUMERICHOST; 730 731 (void)memset(&sin6, 0, sizeof(sin6)); 732 sin6.sin6_family = AF_INET6; 733 sin6.sin6_len = sizeof(struct sockaddr_in6); 734 sin6.sin6_addr = *p; 735 if (IN6_IS_ADDR_LINKLOCAL(p) && 736 *(u_int16_t *)&sin6.sin6_addr.s6_addr[2] != 0) { 737 sin6.sin6_scope_id = 738 ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]); 739 sin6.sin6_addr.s6_addr[2] = sin6.sin6_addr.s6_addr[3] = 0; 740 } 741 742 if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, 743 hbuf, sizeof(hbuf), NULL, 0, niflags)) 744 return "invalid"; 745 746 return hbuf; 747 } 748 #endif 749 750 static void 751 socktrans(struct socket *sock, int i) 752 { 753 static const char *stypename[] = { 754 "unused", /* 0 */ 755 "stream", /* 1 */ 756 "dgram", /* 2 */ 757 "raw", /* 3 */ 758 "rdm", /* 4 */ 759 "seqpak" /* 5 */ 760 }; 761 #define STYPEMAX 5 762 struct socket so; 763 struct protosw proto; 764 struct domain dom; 765 struct inpcb inpcb; 766 #ifdef INET6 767 struct in6pcb in6pcb; 768 #endif 769 struct unpcb unpcb; 770 int len; 771 char dname[32]; 772 #ifdef INET6 773 char xaddrbuf[NI_MAXHOST + 2]; 774 #endif 775 776 PREFIX(i); 777 778 /* fill in socket */ 779 if (!KVM_READ(sock, &so, sizeof(struct socket))) { 780 dprintf("can't read sock at %p", sock); 781 goto bad; 782 } 783 784 /* fill in protosw entry */ 785 if (!KVM_READ(so.so_proto, &proto, sizeof(struct protosw))) { 786 dprintf("can't read protosw at %p", so.so_proto); 787 goto bad; 788 } 789 790 /* fill in domain */ 791 if (!KVM_READ(proto.pr_domain, &dom, sizeof(struct domain))) { 792 dprintf("can't read domain at %p", proto.pr_domain); 793 goto bad; 794 } 795 796 if ((len = kvm_read(kd, (u_long)dom.dom_name, dname, 797 sizeof(dname) - 1)) != sizeof(dname) -1) { 798 dprintf("can't read domain name at %p", dom.dom_name); 799 dname[0] = '\0'; 800 } 801 else 802 dname[len] = '\0'; 803 804 if ((u_short)so.so_type > STYPEMAX) 805 (void)printf("* %s ?%d", dname, so.so_type); 806 else 807 (void)printf("* %s %s", dname, stypename[so.so_type]); 808 809 /* 810 * protocol specific formatting 811 * 812 * Try to find interesting things to print. For TCP, the interesting 813 * thing is the address of the tcpcb, for UDP and others, just the 814 * inpcb (socket pcb). For UNIX domain, its the address of the socket 815 * pcb and the address of the connected pcb (if connected). Otherwise 816 * just print the protocol number and address of the socket itself. 817 * The idea is not to duplicate netstat, but to make available enough 818 * information for further analysis. 819 */ 820 switch(dom.dom_family) { 821 case AF_INET: 822 getinetproto(proto.pr_protocol); 823 if (proto.pr_protocol == IPPROTO_TCP) { 824 if (so.so_pcb == NULL) 825 break; 826 if (kvm_read(kd, (u_long)so.so_pcb, (char *)&inpcb, 827 sizeof(struct inpcb)) != sizeof(struct inpcb)) { 828 dprintf("can't read inpcb at %p", so.so_pcb); 829 goto bad; 830 } 831 (void)printf(" %lx", (long)inpcb.inp_ppcb); 832 (void)printf(" %s:%d", 833 inpcb.inp_laddr.s_addr == INADDR_ANY ? "*" : 834 inet_ntoa(inpcb.inp_laddr), ntohs(inpcb.inp_lport)); 835 if (inpcb.inp_fport) { 836 (void)printf(" <-> %s:%d", 837 inpcb.inp_faddr.s_addr == INADDR_ANY ? "*" : 838 inet_ntoa(inpcb.inp_faddr), 839 ntohs(inpcb.inp_fport)); 840 } 841 } else if (proto.pr_protocol == IPPROTO_UDP) { 842 if (so.so_pcb == NULL) 843 break; 844 if (kvm_read(kd, (u_long)so.so_pcb, (char *)&inpcb, 845 sizeof(struct inpcb)) != sizeof(struct inpcb)) { 846 dprintf("can't read inpcb at %p", so.so_pcb); 847 goto bad; 848 } 849 (void)printf(" %lx", (long)so.so_pcb); 850 (void)printf(" %s:%d", 851 inpcb.inp_laddr.s_addr == INADDR_ANY ? "*" : 852 inet_ntoa(inpcb.inp_laddr), ntohs(inpcb.inp_lport)); 853 if (inpcb.inp_fport) 854 (void)printf(" <-> %s:%d", 855 inpcb.inp_faddr.s_addr == INADDR_ANY ? "*" : 856 inet_ntoa(inpcb.inp_faddr), 857 ntohs(inpcb.inp_fport)); 858 } else if (so.so_pcb) 859 (void)printf(" %lx", (long)so.so_pcb); 860 break; 861 #ifdef INET6 862 case AF_INET6: 863 getinetproto(proto.pr_protocol); 864 if (proto.pr_protocol == IPPROTO_TCP) { 865 if (so.so_pcb == NULL) 866 break; 867 if (kvm_read(kd, (u_long)so.so_pcb, (char *)&in6pcb, 868 sizeof(struct in6pcb)) != sizeof(struct in6pcb)) { 869 dprintf("can't read in6pcb at %p", so.so_pcb); 870 goto bad; 871 } 872 (void)printf(" %lx", (long)in6pcb.in6p_ppcb); 873 (void)snprintf(xaddrbuf, sizeof(xaddrbuf), "[%s]", 874 inet6_addrstr(&in6pcb.in6p_laddr)); 875 (void)printf(" %s:%d", 876 IN6_IS_ADDR_UNSPECIFIED(&in6pcb.in6p_laddr) ? "*" : 877 xaddrbuf, 878 ntohs(in6pcb.in6p_lport)); 879 if (in6pcb.in6p_fport) { 880 (void)snprintf(xaddrbuf, sizeof(xaddrbuf), 881 "[%s]", inet6_addrstr(&in6pcb.in6p_faddr)); 882 (void)printf(" <-> %s:%d", 883 IN6_IS_ADDR_UNSPECIFIED(&in6pcb.in6p_faddr) ? "*" : 884 xaddrbuf, 885 ntohs(in6pcb.in6p_fport)); 886 } 887 } else if (proto.pr_protocol == IPPROTO_UDP) { 888 if (so.so_pcb == NULL) 889 break; 890 if (kvm_read(kd, (u_long)so.so_pcb, (char *)&in6pcb, 891 sizeof(struct in6pcb)) != sizeof(struct in6pcb)) { 892 dprintf("can't read inpcb at %p", so.so_pcb); 893 goto bad; 894 } 895 (void)printf(" %lx", (long)so.so_pcb); 896 (void)snprintf(xaddrbuf, sizeof(xaddrbuf), "[%s]", 897 inet6_addrstr(&in6pcb.in6p_laddr)); 898 (void)printf(" %s:%d", 899 IN6_IS_ADDR_UNSPECIFIED(&in6pcb.in6p_laddr) ? "*" : 900 xaddrbuf, 901 ntohs(in6pcb.in6p_lport)); 902 if (in6pcb.in6p_fport) { 903 (void)snprintf(xaddrbuf, sizeof(xaddrbuf), "[%s]", 904 inet6_addrstr(&in6pcb.in6p_faddr)); 905 (void)printf(" <-> %s:%d", 906 IN6_IS_ADDR_UNSPECIFIED(&in6pcb.in6p_faddr) ? "*" : 907 xaddrbuf, 908 ntohs(in6pcb.in6p_fport)); 909 } 910 } else if (so.so_pcb) 911 (void)printf(" %lx", (long)so.so_pcb); 912 break; 913 #endif 914 case AF_LOCAL: 915 /* print address of pcb and connected pcb */ 916 if (so.so_pcb) { 917 (void)printf(" %lx", (long)so.so_pcb); 918 if (kvm_read(kd, (u_long)so.so_pcb, (char *)&unpcb, 919 sizeof(struct unpcb)) != sizeof(struct unpcb)){ 920 dprintf("can't read unpcb at %p", so.so_pcb); 921 goto bad; 922 } 923 if (unpcb.unp_conn) { 924 char shoconn[4], *cp; 925 926 cp = shoconn; 927 if (!(so.so_state & SS_CANTRCVMORE)) 928 *cp++ = '<'; 929 *cp++ = '-'; 930 if (!(so.so_state & SS_CANTSENDMORE)) 931 *cp++ = '>'; 932 *cp = '\0'; 933 (void)printf(" %s %lx", shoconn, 934 (long)unpcb.unp_conn); 935 } 936 } 937 break; 938 default: 939 /* print protocol number and socket address */ 940 (void)printf(" %d %lx", proto.pr_protocol, (long)sock); 941 } 942 (void)printf("\n"); 943 return; 944 bad: 945 (void)printf("* error\n"); 946 } 947 948 static void 949 ptrans(struct file *fp, struct pipe *cpipe, int i) 950 { 951 struct pipe cp; 952 953 PREFIX(i); 954 955 /* fill in pipe */ 956 if (!KVM_READ(cpipe, &cp, sizeof(struct pipe))) { 957 dprintf("can't read pipe at %p", cpipe); 958 goto bad; 959 } 960 961 /* pipe descriptor is either read or write, never both */ 962 (void)printf("* pipe %p %s %p %s%s%s", cpipe, 963 (fp->f_flag & FWRITE) ? "->" : "<-", 964 cp.pipe_peer, 965 (fp->f_flag & FWRITE) ? "w" : "r", 966 (fp->f_flag & FNONBLOCK) ? "n" : "", 967 (cp.pipe_state & PIPE_ASYNC) ? "a" : ""); 968 (void)printf("\n"); 969 return; 970 bad: 971 (void)printf("* error\n"); 972 } 973 974 static void 975 misctrans(void *kq, int i, const char *type) 976 { 977 978 PREFIX(i); 979 (void)printf("* %s %lx", type, (long)kq); 980 (void)printf("\n"); 981 } 982 983 /* 984 * getinetproto -- 985 * print name of protocol number 986 */ 987 static void 988 getinetproto(int number) 989 { 990 const char *cp; 991 992 switch (number) { 993 case IPPROTO_IP: 994 cp = "ip"; break; 995 case IPPROTO_ICMP: 996 cp ="icmp"; break; 997 case IPPROTO_GGP: 998 cp ="ggp"; break; 999 case IPPROTO_TCP: 1000 cp ="tcp"; break; 1001 case IPPROTO_EGP: 1002 cp ="egp"; break; 1003 case IPPROTO_PUP: 1004 cp ="pup"; break; 1005 case IPPROTO_UDP: 1006 cp ="udp"; break; 1007 case IPPROTO_IDP: 1008 cp ="idp"; break; 1009 case IPPROTO_RAW: 1010 cp ="raw"; break; 1011 case IPPROTO_ICMPV6: 1012 cp ="icmp6"; break; 1013 default: 1014 (void)printf(" %d", number); 1015 return; 1016 } 1017 (void)printf(" %s", cp); 1018 } 1019 1020 static int 1021 getfname(const char *filename) 1022 { 1023 struct stat statbuf; 1024 DEVS *cur; 1025 1026 if (stat(filename, &statbuf)) { 1027 warn("stat(%s)", filename); 1028 return 0; 1029 } 1030 if ((cur = malloc(sizeof(DEVS))) == NULL) { 1031 err(1, "malloc(%u)", (unsigned int)sizeof(DEVS)); 1032 } 1033 cur->next = devs; 1034 devs = cur; 1035 1036 cur->ino = statbuf.st_ino; 1037 cur->fsid = statbuf.st_dev & 0xffff; 1038 cur->name = filename; 1039 return 1; 1040 } 1041 1042 mode_t 1043 getftype(enum vtype v_type) 1044 { 1045 mode_t ftype; 1046 1047 switch (v_type) { 1048 case VREG: 1049 ftype = S_IFREG; 1050 break; 1051 case VDIR: 1052 ftype = S_IFDIR; 1053 break; 1054 case VBLK: 1055 ftype = S_IFBLK; 1056 break; 1057 case VCHR: 1058 ftype = S_IFCHR; 1059 break; 1060 case VLNK: 1061 ftype = S_IFLNK; 1062 break; 1063 case VSOCK: 1064 ftype = S_IFSOCK; 1065 break; 1066 case VFIFO: 1067 ftype = S_IFIFO; 1068 break; 1069 default: 1070 ftype = 0; 1071 break; 1072 }; 1073 1074 return ftype; 1075 } 1076 1077 static void 1078 usage(void) 1079 { 1080 (void)fprintf(stderr, "Usage: %s [-fnv] [-p pid] [-u user] " 1081 "[-N system] [-M core] [file ...]\n", getprogname()); 1082 exit(1); 1083 } 1084
Indexes created Thu Sep 25 02:09:54 GMT 2025