1 /* $NetBSD: fstat.c,v 1.89 2009/05/24 21:41:44 ad 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 1.89 2009/05/24 21:41:44 ad 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(struct file *); 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 struct fdtab dt; 317 318 Uname = user_from_uid(p->p_uid, 0); 319 Pid = p->p_pid; 320 Comm = p->p_comm; 321 322 if (p->p_fd == 0 || p->p_cwdi == 0) 323 return; 324 if (!KVM_READ(p->p_fd, &filed, sizeof (filed))) { 325 warnx("can't read filedesc at %p for pid %d", (void *)(uintptr_t)p->p_fd, Pid); 326 return; 327 } 328 if (!KVM_READ(p->p_cwdi, &cwdi, sizeof(cwdi))) { 329 warnx("can't read cwdinfo at %p for pid %d", (void *)(uintptr_t)p->p_cwdi, Pid); 330 return; 331 } 332 if (!KVM_READ(filed.fd_dt, &dt, sizeof(dt))) { 333 warnx("can't read dtab at %p for pid %d", filed.fd_dt, Pid); 334 return; 335 } 336 if ((unsigned)filed.fd_lastfile >= dt.dt_nfiles || 337 filed.fd_freefile > filed.fd_lastfile + 1) { 338 dprintf("filedesc corrupted at %p for pid %d", (void *)(uintptr_t)p->p_fd, Pid); 339 return; 340 } 341 /* 342 * root directory vnode, if one 343 */ 344 if (cwdi.cwdi_rdir) 345 vtrans(cwdi.cwdi_rdir, RDIR, FREAD); 346 /* 347 * current working directory vnode 348 */ 349 vtrans(cwdi.cwdi_cdir, CDIR, FREAD); 350 #if 0 351 /* 352 * Disable for now, since p->p_tracep appears to point to a ktr_desc * 353 * ktrace vnode, if one 354 */ 355 if (p->p_tracep) 356 ftrans((struct file *)(intptr_t)p->p_tracep, TRACE); 357 #endif 358 /* 359 * open files 360 */ 361 #define FPSIZE (sizeof (fdfile_t *)) 362 ALLOC_OFILES(filed.fd_lastfile+1); 363 if (!KVM_READ(&filed.fd_dt->dt_ff, ofiles, 364 (filed.fd_lastfile+1) * FPSIZE)) { 365 dprintf("can't read file structures at %p for pid %d", 366 &filed.fd_dt->dt_ff, Pid); 367 return; 368 } 369 for (i = 0; i <= filed.fd_lastfile; i++) { 370 if (ofiles[i] == NULL) 371 continue; 372 ftrans(ofiles[i], i); 373 } 374 } 375 376 static void 377 ftrans(fdfile_t *fp, int i) 378 { 379 struct file file; 380 fdfile_t fdfile; 381 382 if (!KVM_READ(fp, &fdfile, sizeof(fdfile))) { 383 dprintf("can't read file %d at %p for pid %d", 384 i, fp, Pid); 385 return; 386 } 387 if (fdfile.ff_file == NULL) 388 return; 389 if (!KVM_READ(fdfile.ff_file, &file, sizeof(file))) { 390 dprintf("can't read file %d at %p for pid %d", 391 i, fdfile.ff_file, Pid); 392 return; 393 } 394 switch (file.f_type) { 395 case DTYPE_VNODE: 396 vtrans((struct vnode *)file.f_data, i, file.f_flag); 397 break; 398 case DTYPE_SOCKET: 399 if (checkfile == 0) 400 socktrans((struct socket *)file.f_data, i); 401 break; 402 case DTYPE_PIPE: 403 if (checkfile == 0) 404 ptrans(&file, (struct pipe *)file.f_data, i); 405 break; 406 case DTYPE_MISC: 407 case DTYPE_KQUEUE: 408 case DTYPE_CRYPTO: 409 case DTYPE_MQUEUE: 410 if (checkfile == 0) 411 misctrans(&file); 412 break; 413 default: 414 dprintf("unknown file type %d for file %d of pid %d", 415 file.f_type, i, Pid); 416 break; 417 } 418 } 419 420 static const char * 421 vfilestat(struct vnode *vp, struct filestat *fsp) 422 { 423 const char *badtype = NULL; 424 425 if (vp->v_type == VNON || vp->v_tag == VT_NON) 426 badtype = "none"; 427 else if (vp->v_type == VBAD) 428 badtype = "bad"; 429 else 430 switch (vp->v_tag) { 431 case VT_UFS: 432 case VT_LFS: 433 case VT_MFS: 434 if (!ufs_filestat(vp, fsp)) 435 badtype = "error"; 436 break; 437 case VT_MSDOSFS: 438 if (!msdosfs_filestat(vp, fsp)) 439 badtype = "error"; 440 break; 441 case VT_NFS: 442 if (!nfs_filestat(vp, fsp)) 443 badtype = "error"; 444 break; 445 case VT_EXT2FS: 446 if (!ext2fs_filestat(vp, fsp)) 447 badtype = "error"; 448 break; 449 case VT_ISOFS: 450 if (!isofs_filestat(vp, fsp)) 451 badtype = "error"; 452 break; 453 case VT_NTFS: 454 if (!ntfs_filestat(vp, fsp)) 455 badtype = "error"; 456 break; 457 case VT_PTYFS: 458 if (!ptyfs_filestat(vp, fsp)) 459 badtype = "error"; 460 break; 461 case VT_TMPFS: 462 if (!tmpfs_filestat(vp, fsp)) 463 badtype = "error"; 464 break; 465 case VT_NULL: 466 case VT_OVERLAY: 467 case VT_UMAP: 468 badtype = layer_filestat(vp, fsp); 469 break; 470 default: { 471 static char unknown[10]; 472 (void)snprintf(unknown, sizeof unknown, 473 "?(%x)", vp->v_tag); 474 badtype = unknown; 475 break; 476 } 477 } 478 return (badtype); 479 } 480 481 static void 482 vtrans(struct vnode *vp, int i, int flag) 483 { 484 struct vnode vn; 485 struct filestat fst; 486 char mode[15], rw[3]; 487 const char *badtype, *filename; 488 489 filename = NULL; 490 if (!KVM_READ(vp, &vn, sizeof(struct vnode))) { 491 dprintf("can't read vnode at %p for pid %d", vp, Pid); 492 return; 493 } 494 badtype = vfilestat(&vn, &fst); 495 if (checkfile) { 496 int fsmatch = 0; 497 DEVS *d; 498 499 if (badtype) 500 return; 501 for (d = devs; d != NULL; d = d->next) 502 if (d->fsid == fst.fsid) { 503 fsmatch = 1; 504 if (d->ino == fst.fileid) { 505 filename = d->name; 506 break; 507 } 508 } 509 if (fsmatch == 0 || (filename == NULL && fsflg == 0)) 510 return; 511 } 512 PREFIX(i); 513 if (badtype) { 514 (void)printf(" - - %10s -\n", badtype); 515 return; 516 } 517 if (nflg) 518 (void)printf(" %2llu,%-2llu", 519 (unsigned long long)major(fst.fsid), 520 (unsigned long long)minor(fst.fsid)); 521 else 522 (void)printf(" %-8s", getmnton(vn.v_mount)); 523 if (nflg) 524 (void)snprintf(mode, sizeof mode, "%o", fst.mode); 525 else 526 strmode(fst.mode, mode); 527 (void)printf(" %7"PRIu64" %*s", fst.fileid, nflg ? 5 : 10, mode); 528 switch (vn.v_type) { 529 case VBLK: 530 case VCHR: { 531 char *name; 532 533 if (nflg || ((name = devname(fst.rdev, vn.v_type == VCHR ? 534 S_IFCHR : S_IFBLK)) == NULL)) 535 (void)printf(" %2llu,%-2llu", 536 (unsigned long long)major(fst.rdev), 537 (unsigned long long)minor(fst.rdev)); 538 else 539 (void)printf(" %6s", name); 540 break; 541 } 542 default: 543 (void)printf(" %6lld", (long long)fst.size); 544 } 545 rw[0] = '\0'; 546 if (flag & FREAD) 547 (void)strlcat(rw, "r", sizeof(rw)); 548 if (flag & FWRITE) 549 (void)strlcat(rw, "w", sizeof(rw)); 550 (void)printf(" %-2s", rw); 551 if (filename && !fsflg) 552 (void)printf(" %s", filename); 553 (void)putchar('\n'); 554 } 555 556 static int 557 ufs_filestat(struct vnode *vp, struct filestat *fsp) 558 { 559 struct inode inode; 560 union dinode { 561 struct ufs1_dinode dp1; 562 struct ufs2_dinode dp2; 563 } dip; 564 565 if (!KVM_READ(VTOI(vp), &inode, sizeof (inode))) { 566 dprintf("can't read inode at %p for pid %d", VTOI(vp), Pid); 567 return 0; 568 } 569 570 if (!KVM_READ(inode.i_din.ffs1_din, &dip, sizeof(struct ufs1_dinode))) { 571 dprintf("can't read dinode at %p for pid %d", 572 inode.i_din.ffs1_din, Pid); 573 return 0; 574 } 575 if (inode.i_size == dip.dp1.di_size) 576 fsp->rdev = dip.dp1.di_rdev; 577 else { 578 if (!KVM_READ(inode.i_din.ffs1_din, &dip, 579 sizeof(struct ufs2_dinode))) { 580 dprintf("can't read dinode at %p for pid %d", 581 inode.i_din.ffs1_din, Pid); 582 return 0; 583 } 584 fsp->rdev = dip.dp2.di_rdev; 585 } 586 587 fsp->fsid = inode.i_dev & 0xffff; 588 fsp->fileid = inode.i_number; 589 fsp->mode = (mode_t)inode.i_mode; 590 fsp->size = inode.i_size; 591 592 return 1; 593 } 594 595 static int 596 ext2fs_filestat(struct vnode *vp, struct filestat *fsp) 597 { 598 struct inode inode; 599 u_int16_t mode; 600 u_int32_t size; 601 602 if (!KVM_READ(VTOI(vp), &inode, sizeof (inode))) { 603 dprintf("can't read inode at %p for pid %d", VTOI(vp), Pid); 604 return 0; 605 } 606 fsp->fsid = inode.i_dev & 0xffff; 607 fsp->fileid = inode.i_number; 608 609 if (!KVM_READ(&inode.i_e2fs_mode, &mode, sizeof mode)) { 610 dprintf("can't read inode %p's mode at %p for pid %d", VTOI(vp), 611 &inode.i_e2fs_mode, Pid); 612 return 0; 613 } 614 fsp->mode = mode; 615 616 if (!KVM_READ(&inode.i_e2fs_size, &size, sizeof size)) { 617 dprintf("can't read inode %p's size at %p for pid %d", VTOI(vp), 618 &inode.i_e2fs_size, Pid); 619 return 0; 620 } 621 fsp->size = size; 622 fsp->rdev = 0; /* XXX */ 623 return 1; 624 } 625 626 static int 627 nfs_filestat(struct vnode *vp, struct filestat *fsp) 628 { 629 struct nfsnode nfsnode; 630 struct vattr va; 631 632 if (!KVM_READ(VTONFS(vp), &nfsnode, sizeof (nfsnode))) { 633 dprintf("can't read nfsnode at %p for pid %d", VTONFS(vp), 634 Pid); 635 return 0; 636 } 637 if (!KVM_READ(nfsnode.n_vattr, &va, sizeof(va))) { 638 dprintf("can't read vnode attributes at %p for pid %d", 639 nfsnode.n_vattr, Pid); 640 return 0; 641 } 642 fsp->fsid = va.va_fsid; 643 fsp->fileid = va.va_fileid; 644 fsp->size = nfsnode.n_size; 645 fsp->rdev = va.va_rdev; 646 fsp->mode = (mode_t)va.va_mode | getftype(vp->v_type); 647 648 return 1; 649 } 650 651 static int 652 msdosfs_filestat(struct vnode *vp, struct filestat *fsp) 653 { 654 struct denode de; 655 struct msdosfsmount mp; 656 657 if (!KVM_READ(VTONFS(vp), &de, sizeof(de))) { 658 dprintf("can't read denode at %p for pid %d", VTONFS(vp), 659 Pid); 660 return 0; 661 } 662 if (!KVM_READ(de.de_pmp, &mp, sizeof(mp))) { 663 dprintf("can't read mount struct at %p for pid %d", de.de_pmp, 664 Pid); 665 return 0; 666 } 667 668 fsp->fsid = de.de_dev & 0xffff; 669 fsp->fileid = 0; /* XXX see msdosfs_vptofh() for more info */ 670 fsp->size = de.de_FileSize; 671 fsp->rdev = 0; /* msdosfs doesn't support device files */ 672 fsp->mode = (0777 & mp.pm_mask) | getftype(vp->v_type); 673 return 1; 674 } 675 676 static const char * 677 layer_filestat(struct vnode *vp, struct filestat *fsp) 678 { 679 struct layer_node layer_node; 680 struct mount mount; 681 struct vnode vn; 682 const char *badtype; 683 684 if (!KVM_READ(VTOLAYER(vp), &layer_node, sizeof(layer_node))) { 685 dprintf("can't read layer_node at %p for pid %d", 686 VTOLAYER(vp), Pid); 687 return ("error"); 688 } 689 if (!KVM_READ(vp->v_mount, &mount, sizeof(struct mount))) { 690 dprintf("can't read mount struct at %p for pid %d", 691 vp->v_mount, Pid); 692 return ("error"); 693 } 694 vp = layer_node.layer_lowervp; 695 if (!KVM_READ(vp, &vn, sizeof(struct vnode))) { 696 dprintf("can't read vnode at %p for pid %d", vp, Pid); 697 return ("error"); 698 } 699 if ((badtype = vfilestat(&vn, fsp)) == NULL) 700 fsp->fsid = mount.mnt_stat.f_fsidx.__fsid_val[0]; 701 return (badtype); 702 } 703 704 static char * 705 getmnton(struct mount *m) 706 { 707 static struct mount mount; 708 static struct mtab { 709 struct mtab *next; 710 struct mount *m; 711 char mntonname[MNAMELEN]; 712 } *mhead = NULL; 713 struct mtab *mt; 714 715 for (mt = mhead; mt != NULL; mt = mt->next) 716 if (m == mt->m) 717 return (mt->mntonname); 718 if (!KVM_READ(m, &mount, sizeof(struct mount))) { 719 warnx("can't read mount table at %p", m); 720 return (NULL); 721 } 722 if ((mt = malloc(sizeof (struct mtab))) == NULL) { 723 err(1, "malloc(%u)", (unsigned int)sizeof(struct mtab)); 724 } 725 mt->m = m; 726 (void)memmove(&mt->mntonname[0], &mount.mnt_stat.f_mntonname[0], 727 MNAMELEN); 728 mt->next = mhead; 729 mhead = mt; 730 return (mt->mntonname); 731 } 732 733 #ifdef INET6 734 static const char * 735 inet6_addrstr(struct in6_addr *p) 736 { 737 struct sockaddr_in6 sin6; 738 static char hbuf[NI_MAXHOST]; 739 const int niflags = NI_NUMERICHOST; 740 741 (void)memset(&sin6, 0, sizeof(sin6)); 742 sin6.sin6_family = AF_INET6; 743 sin6.sin6_len = sizeof(struct sockaddr_in6); 744 sin6.sin6_addr = *p; 745 if (IN6_IS_ADDR_LINKLOCAL(p) && 746 *(u_int16_t *)&sin6.sin6_addr.s6_addr[2] != 0) { 747 sin6.sin6_scope_id = 748 ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]); 749 sin6.sin6_addr.s6_addr[2] = sin6.sin6_addr.s6_addr[3] = 0; 750 } 751 752 if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, 753 hbuf, sizeof(hbuf), NULL, 0, niflags)) 754 return "invalid"; 755 756 return hbuf; 757 } 758 #endif 759 760 static void 761 socktrans(struct socket *sock, int i) 762 { 763 static const char *stypename[] = { 764 "unused", /* 0 */ 765 "stream", /* 1 */ 766 "dgram", /* 2 */ 767 "raw", /* 3 */ 768 "rdm", /* 4 */ 769 "seqpak" /* 5 */ 770 }; 771 #define STYPEMAX 5 772 struct socket so; 773 struct protosw proto; 774 struct domain dom; 775 struct inpcb inpcb; 776 #ifdef INET6 777 struct in6pcb in6pcb; 778 #endif 779 struct unpcb unpcb; 780 int len; 781 char dname[32]; 782 #ifdef INET6 783 char xaddrbuf[NI_MAXHOST + 2]; 784 #endif 785 786 PREFIX(i); 787 788 /* fill in socket */ 789 if (!KVM_READ(sock, &so, sizeof(struct socket))) { 790 dprintf("can't read sock at %p", sock); 791 goto bad; 792 } 793 794 /* fill in protosw entry */ 795 if (!KVM_READ(so.so_proto, &proto, sizeof(struct protosw))) { 796 dprintf("can't read protosw at %p", so.so_proto); 797 goto bad; 798 } 799 800 /* fill in domain */ 801 if (!KVM_READ(proto.pr_domain, &dom, sizeof(struct domain))) { 802 dprintf("can't read domain at %p", proto.pr_domain); 803 goto bad; 804 } 805 806 if ((len = kvm_read(kd, (u_long)dom.dom_name, dname, 807 sizeof(dname) - 1)) != sizeof(dname) -1) { 808 dprintf("can't read domain name at %p", dom.dom_name); 809 dname[0] = '\0'; 810 } 811 else 812 dname[len] = '\0'; 813 814 if ((u_short)so.so_type > STYPEMAX) 815 (void)printf("* %s ?%d", dname, so.so_type); 816 else 817 (void)printf("* %s %s", dname, stypename[so.so_type]); 818 819 /* 820 * protocol specific formatting 821 * 822 * Try to find interesting things to print. For TCP, the interesting 823 * thing is the address of the tcpcb, for UDP and others, just the 824 * inpcb (socket pcb). For UNIX domain, its the address of the socket 825 * pcb and the address of the connected pcb (if connected). Otherwise 826 * just print the protocol number and address of the socket itself. 827 * The idea is not to duplicate netstat, but to make available enough 828 * information for further analysis. 829 */ 830 switch(dom.dom_family) { 831 case AF_INET: 832 getinetproto(proto.pr_protocol); 833 if (proto.pr_protocol == IPPROTO_TCP) { 834 if (so.so_pcb == NULL) 835 break; 836 if (kvm_read(kd, (u_long)so.so_pcb, (char *)&inpcb, 837 sizeof(struct inpcb)) != sizeof(struct inpcb)) { 838 dprintf("can't read inpcb at %p", so.so_pcb); 839 goto bad; 840 } 841 (void)printf(" %lx", (long)inpcb.inp_ppcb); 842 (void)printf(" %s:%d", 843 inpcb.inp_laddr.s_addr == INADDR_ANY ? "*" : 844 inet_ntoa(inpcb.inp_laddr), ntohs(inpcb.inp_lport)); 845 if (inpcb.inp_fport) { 846 (void)printf(" <-> %s:%d", 847 inpcb.inp_faddr.s_addr == INADDR_ANY ? "*" : 848 inet_ntoa(inpcb.inp_faddr), 849 ntohs(inpcb.inp_fport)); 850 } 851 } else if (proto.pr_protocol == IPPROTO_UDP) { 852 if (so.so_pcb == NULL) 853 break; 854 if (kvm_read(kd, (u_long)so.so_pcb, (char *)&inpcb, 855 sizeof(struct inpcb)) != sizeof(struct inpcb)) { 856 dprintf("can't read inpcb at %p", so.so_pcb); 857 goto bad; 858 } 859 (void)printf(" %lx", (long)so.so_pcb); 860 (void)printf(" %s:%d", 861 inpcb.inp_laddr.s_addr == INADDR_ANY ? "*" : 862 inet_ntoa(inpcb.inp_laddr), ntohs(inpcb.inp_lport)); 863 if (inpcb.inp_fport) 864 (void)printf(" <-> %s:%d", 865 inpcb.inp_faddr.s_addr == INADDR_ANY ? "*" : 866 inet_ntoa(inpcb.inp_faddr), 867 ntohs(inpcb.inp_fport)); 868 } else if (so.so_pcb) 869 (void)printf(" %lx", (long)so.so_pcb); 870 break; 871 #ifdef INET6 872 case AF_INET6: 873 getinetproto(proto.pr_protocol); 874 if (proto.pr_protocol == IPPROTO_TCP) { 875 if (so.so_pcb == NULL) 876 break; 877 if (kvm_read(kd, (u_long)so.so_pcb, (char *)&in6pcb, 878 sizeof(struct in6pcb)) != sizeof(struct in6pcb)) { 879 dprintf("can't read in6pcb at %p", so.so_pcb); 880 goto bad; 881 } 882 (void)printf(" %lx", (long)in6pcb.in6p_ppcb); 883 (void)snprintf(xaddrbuf, sizeof(xaddrbuf), "[%s]", 884 inet6_addrstr(&in6pcb.in6p_laddr)); 885 (void)printf(" %s:%d", 886 IN6_IS_ADDR_UNSPECIFIED(&in6pcb.in6p_laddr) ? "*" : 887 xaddrbuf, 888 ntohs(in6pcb.in6p_lport)); 889 if (in6pcb.in6p_fport) { 890 (void)snprintf(xaddrbuf, sizeof(xaddrbuf), 891 "[%s]", inet6_addrstr(&in6pcb.in6p_faddr)); 892 (void)printf(" <-> %s:%d", 893 IN6_IS_ADDR_UNSPECIFIED(&in6pcb.in6p_faddr) ? "*" : 894 xaddrbuf, 895 ntohs(in6pcb.in6p_fport)); 896 } 897 } else if (proto.pr_protocol == IPPROTO_UDP) { 898 if (so.so_pcb == NULL) 899 break; 900 if (kvm_read(kd, (u_long)so.so_pcb, (char *)&in6pcb, 901 sizeof(struct in6pcb)) != sizeof(struct in6pcb)) { 902 dprintf("can't read inpcb at %p", so.so_pcb); 903 goto bad; 904 } 905 (void)printf(" %lx", (long)so.so_pcb); 906 (void)snprintf(xaddrbuf, sizeof(xaddrbuf), "[%s]", 907 inet6_addrstr(&in6pcb.in6p_laddr)); 908 (void)printf(" %s:%d", 909 IN6_IS_ADDR_UNSPECIFIED(&in6pcb.in6p_laddr) ? "*" : 910 xaddrbuf, 911 ntohs(in6pcb.in6p_lport)); 912 if (in6pcb.in6p_fport) { 913 (void)snprintf(xaddrbuf, sizeof(xaddrbuf), "[%s]", 914 inet6_addrstr(&in6pcb.in6p_faddr)); 915 (void)printf(" <-> %s:%d", 916 IN6_IS_ADDR_UNSPECIFIED(&in6pcb.in6p_faddr) ? "*" : 917 xaddrbuf, 918 ntohs(in6pcb.in6p_fport)); 919 } 920 } else if (so.so_pcb) 921 (void)printf(" %lx", (long)so.so_pcb); 922 break; 923 #endif 924 case AF_LOCAL: 925 /* print address of pcb and connected pcb */ 926 if (so.so_pcb) { 927 (void)printf(" %lx", (long)so.so_pcb); 928 if (kvm_read(kd, (u_long)so.so_pcb, (char *)&unpcb, 929 sizeof(struct unpcb)) != sizeof(struct unpcb)){ 930 dprintf("can't read unpcb at %p", so.so_pcb); 931 goto bad; 932 } 933 if (unpcb.unp_conn) { 934 char shoconn[4], *cp; 935 936 cp = shoconn; 937 if (!(so.so_state & SS_CANTRCVMORE)) 938 *cp++ = '<'; 939 *cp++ = '-'; 940 if (!(so.so_state & SS_CANTSENDMORE)) 941 *cp++ = '>'; 942 *cp = '\0'; 943 (void)printf(" %s %lx", shoconn, 944 (long)unpcb.unp_conn); 945 } 946 } 947 break; 948 default: 949 /* print protocol number and socket address */ 950 (void)printf(" %d %lx", proto.pr_protocol, (long)sock); 951 } 952 (void)printf("\n"); 953 return; 954 bad: 955 (void)printf("* error\n"); 956 } 957 958 static void 959 ptrans(struct file *fp, struct pipe *cpipe, int i) 960 { 961 struct pipe cp; 962 963 PREFIX(i); 964 965 /* fill in pipe */ 966 if (!KVM_READ(cpipe, &cp, sizeof(struct pipe))) { 967 dprintf("can't read pipe at %p", cpipe); 968 goto bad; 969 } 970 971 /* pipe descriptor is either read or write, never both */ 972 (void)printf("* pipe %p %s %p %s%s%s", cpipe, 973 (fp->f_flag & FWRITE) ? "->" : "<-", 974 cp.pipe_peer, 975 (fp->f_flag & FWRITE) ? "w" : "r", 976 (fp->f_flag & FNONBLOCK) ? "n" : "", 977 (cp.pipe_state & PIPE_ASYNC) ? "a" : ""); 978 (void)printf("\n"); 979 return; 980 bad: 981 (void)printf("* error\n"); 982 } 983 984 static void 985 misctrans(struct file *file) 986 { 987 988 PREFIX((int)file->f_type); 989 pmisc(file, dtypes[file->f_type]); 990 } 991 992 /* 993 * getinetproto -- 994 * print name of protocol number 995 */ 996 static void 997 getinetproto(int number) 998 { 999 const char *cp; 1000 1001 switch (number) { 1002 case IPPROTO_IP: 1003 cp = "ip"; break; 1004 case IPPROTO_ICMP: 1005 cp ="icmp"; break; 1006 case IPPROTO_GGP: 1007 cp ="ggp"; break; 1008 case IPPROTO_TCP: 1009 cp ="tcp"; break; 1010 case IPPROTO_EGP: 1011 cp ="egp"; break; 1012 case IPPROTO_PUP: 1013 cp ="pup"; break; 1014 case IPPROTO_UDP: 1015 cp ="udp"; break; 1016 case IPPROTO_IDP: 1017 cp ="idp"; break; 1018 case IPPROTO_RAW: 1019 cp ="raw"; break; 1020 case IPPROTO_ICMPV6: 1021 cp ="icmp6"; break; 1022 default: 1023 (void)printf(" %d", number); 1024 return; 1025 } 1026 (void)printf(" %s", cp); 1027 } 1028 1029 static int 1030 getfname(const char *filename) 1031 { 1032 struct stat statbuf; 1033 DEVS *cur; 1034 1035 if (stat(filename, &statbuf)) { 1036 warn("stat(%s)", filename); 1037 return 0; 1038 } 1039 if ((cur = malloc(sizeof(DEVS))) == NULL) { 1040 err(1, "malloc(%u)", (unsigned int)sizeof(DEVS)); 1041 } 1042 cur->next = devs; 1043 devs = cur; 1044 1045 cur->ino = statbuf.st_ino; 1046 cur->fsid = statbuf.st_dev & 0xffff; 1047 cur->name = filename; 1048 return 1; 1049 } 1050 1051 mode_t 1052 getftype(enum vtype v_type) 1053 { 1054 mode_t ftype; 1055 1056 switch (v_type) { 1057 case VREG: 1058 ftype = S_IFREG; 1059 break; 1060 case VDIR: 1061 ftype = S_IFDIR; 1062 break; 1063 case VBLK: 1064 ftype = S_IFBLK; 1065 break; 1066 case VCHR: 1067 ftype = S_IFCHR; 1068 break; 1069 case VLNK: 1070 ftype = S_IFLNK; 1071 break; 1072 case VSOCK: 1073 ftype = S_IFSOCK; 1074 break; 1075 case VFIFO: 1076 ftype = S_IFIFO; 1077 break; 1078 default: 1079 ftype = 0; 1080 break; 1081 }; 1082 1083 return ftype; 1084 } 1085 1086 static void 1087 usage(void) 1088 { 1089 (void)fprintf(stderr, "Usage: %s [-fnv] [-p pid] [-u user] " 1090 "[-N system] [-M core] [file ...]\n", getprogname()); 1091 exit(1); 1092 } 1093