fstat.c revision 1.73
1 /* $NetBSD: fstat.c,v 1.73 2006/02/10 16:01:45 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 1.73 2006/02/10 16:01:45 christos Exp $"); 43 #endif 44 #endif /* not lint */ 45 46 #include <sys/param.h> 47 #include <sys/time.h> 48 #include <sys/proc.h> 49 #include <sys/user.h> 50 #include <sys/stat.h> 51 #include <sys/vnode.h> 52 #include <sys/socket.h> 53 #include <sys/socketvar.h> 54 #include <sys/domain.h> 55 #include <sys/protosw.h> 56 #include <sys/unpcb.h> 57 #include <sys/sysctl.h> 58 #include <sys/filedesc.h> 59 #include <sys/pipe.h> 60 #define _KERNEL 61 #include <sys/file.h> 62 #include <ufs/ufs/inode.h> 63 #undef _KERNEL 64 #define _KERNEL 65 #include <sys/mount.h> 66 #undef _KERNEL 67 #define NFS 68 #include <nfs/nfsproto.h> 69 #include <nfs/rpcv2.h> 70 #include <nfs/nfs.h> 71 #include <nfs/nfsnode.h> 72 #undef NFS 73 #include <msdosfs/denode.h> 74 #include <msdosfs/bpb.h> 75 #define _KERNEL 76 #include <msdosfs/msdosfsmount.h> 77 #undef _KERNEL 78 #define _KERNEL 79 #include <miscfs/genfs/layer.h> 80 #undef _KERNEL 81 82 #include <net/route.h> 83 #include <netinet/in.h> 84 #include <netinet/in_systm.h> 85 #include <netinet/ip.h> 86 #include <netinet/in_pcb.h> 87 88 #ifdef INET6 89 #include <netinet/ip6.h> 90 #include <netinet6/ip6_var.h> 91 #include <netinet6/in6_pcb.h> 92 #endif 93 94 #include <netdb.h> 95 #include <arpa/inet.h> 96 97 #include <ctype.h> 98 #include <errno.h> 99 #include <kvm.h> 100 #include <limits.h> 101 #include <nlist.h> 102 #include <paths.h> 103 #include <pwd.h> 104 #include <stdio.h> 105 #include <stdlib.h> 106 #include <string.h> 107 #include <unistd.h> 108 #include <err.h> 109 110 #include "fstat.h" 111 112 #define TEXT -1 113 #define CDIR -2 114 #define RDIR -3 115 #define TRACE -4 116 117 typedef struct devs { 118 struct devs *next; 119 long fsid; 120 ino_t ino; 121 const char *name; 122 } DEVS; 123 static DEVS *devs; 124 125 static int fsflg, /* show files on same filesystem as file(s) argument */ 126 pflg, /* show files open by a particular pid */ 127 uflg; /* show files open by a particular (effective) user */ 128 static int checkfile; /* true if restricting to particular files or filesystems */ 129 static int nflg; /* (numerical) display f.s. and rdev as dev_t */ 130 int vflg; /* display errors in locating kernel data objects etc... */ 131 132 static struct file **ofiles; /* buffer of pointers to file structures */ 133 static int maxfiles; 134 #define ALLOC_OFILES(d) \ 135 if ((d) > maxfiles) { \ 136 free(ofiles); \ 137 ofiles = malloc((d) * sizeof(struct file *)); \ 138 if (ofiles == NULL) { \ 139 err(1, "malloc(%u)", (d) * \ 140 (unsigned int)sizeof(struct file *)); \ 141 } \ 142 maxfiles = (d); \ 143 } 144 145 kvm_t *kd; 146 147 static void dofiles(struct kinfo_proc2 *); 148 static int ext2fs_filestat(struct vnode *, struct filestat *); 149 static int getfname(const char *); 150 static void getinetproto(int); 151 static char *getmnton(struct mount *); 152 static const char *layer_filestat(struct vnode *, struct filestat *); 153 static int msdosfs_filestat(struct vnode *, struct filestat *); 154 static int nfs_filestat(struct vnode *, struct filestat *); 155 #ifdef INET6 156 static const char *inet6_addrstr(struct in6_addr *); 157 #endif 158 static void socktrans(struct socket *, int); 159 static void kqueuetrans(void *, int); 160 static int ufs_filestat(struct vnode *, struct filestat *); 161 static void usage(void) __attribute__((__noreturn__)); 162 static const char *vfilestat(struct vnode *, struct filestat *); 163 static void vtrans(struct vnode *, int, int); 164 static void ftrans(struct file *, int); 165 static void ptrans(struct file *, struct pipe *, int); 166 167 int 168 main(int argc, char **argv) 169 { 170 struct passwd *passwd; 171 struct kinfo_proc2 *p, *plast; 172 int arg, ch, what; 173 char *memf, *nlistf; 174 char buf[_POSIX2_LINE_MAX]; 175 int cnt; 176 gid_t egid = getegid(); 177 178 (void)setegid(getgid()); 179 arg = 0; 180 what = KERN_PROC_ALL; 181 nlistf = memf = NULL; 182 while ((ch = getopt(argc, argv, "fnp:u:vN:M:")) != -1) 183 switch((char)ch) { 184 case 'f': 185 fsflg = 1; 186 break; 187 case 'M': 188 memf = optarg; 189 break; 190 case 'N': 191 nlistf = optarg; 192 break; 193 case 'n': 194 nflg = 1; 195 break; 196 case 'p': 197 if (pflg++) 198 usage(); 199 if (!isdigit((unsigned char)*optarg)) { 200 warnx("-p requires a process id"); 201 usage(); 202 } 203 what = KERN_PROC_PID; 204 arg = atoi(optarg); 205 break; 206 case 'u': 207 if (uflg++) 208 usage(); 209 if (!(passwd = getpwnam(optarg))) { 210 errx(1, "%s: unknown uid", optarg); 211 } 212 what = KERN_PROC_UID; 213 arg = passwd->pw_uid; 214 break; 215 case 'v': 216 vflg = 1; 217 break; 218 case '?': 219 default: 220 usage(); 221 } 222 223 if (*(argv += optind)) { 224 for (; *argv; ++argv) { 225 if (getfname(*argv)) 226 checkfile = 1; 227 } 228 if (!checkfile) /* file(s) specified, but none accessible */ 229 exit(1); 230 } 231 232 ALLOC_OFILES(256); /* reserve space for file pointers */ 233 234 if (fsflg && !checkfile) { 235 /* -f with no files means use wd */ 236 if (getfname(".") == 0) 237 exit(1); 238 checkfile = 1; 239 } 240 241 /* 242 * Discard setgid privileges. If not the running kernel, we toss 243 * them away totally so that bad guys can't print interesting stuff 244 * from kernel memory, otherwise switch back to kmem for the 245 * duration of the kvm_openfiles() call. 246 */ 247 if (nlistf != NULL || memf != NULL) 248 (void)setgid(getgid()); 249 else 250 (void)setegid(egid); 251 252 if ((kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, buf)) == NULL) 253 errx(1, "%s", buf); 254 255 /* get rid of it now anyway */ 256 if (nlistf == NULL && memf == NULL) 257 (void)setgid(getgid()); 258 259 if ((p = kvm_getproc2(kd, what, arg, sizeof *p, &cnt)) == NULL) { 260 errx(1, "%s", kvm_geterr(kd)); 261 } 262 if (nflg) 263 (void)printf("%s", 264 "USER CMD PID FD DEV INUM MODE SZ|DV R/W"); 265 else 266 (void)printf("%s", 267 "USER CMD PID FD MOUNT INUM MODE SZ|DV R/W"); 268 if (checkfile && fsflg == 0) 269 (void)printf(" NAME\n"); 270 else 271 (void)putchar('\n'); 272 273 for (plast = &p[cnt]; p < plast; ++p) { 274 if (p->p_stat == SZOMB) 275 continue; 276 dofiles(p); 277 } 278 return 0; 279 } 280 281 static const char *Uname, *Comm; 282 pid_t Pid; 283 284 #define PREFIX(i) (void)printf("%-8.8s %-10s %5d", Uname, Comm, Pid); \ 285 switch(i) { \ 286 case TEXT: \ 287 (void)printf(" text"); \ 288 break; \ 289 case CDIR: \ 290 (void)printf(" wd"); \ 291 break; \ 292 case RDIR: \ 293 (void)printf(" root"); \ 294 break; \ 295 case TRACE: \ 296 (void)printf(" tr"); \ 297 break; \ 298 default: \ 299 (void)printf(" %4d", i); \ 300 break; \ 301 } 302 303 /* 304 * print open files attributed to this process 305 */ 306 static void 307 dofiles(struct kinfo_proc2 *p) 308 { 309 int i; 310 struct filedesc0 filed0; 311 #define filed filed0.fd_fd 312 struct cwdinfo cwdi; 313 314 Uname = user_from_uid(p->p_uid, 0); 315 Pid = p->p_pid; 316 Comm = p->p_comm; 317 318 if (p->p_fd == 0 || p->p_cwdi == 0) 319 return; 320 if (!KVM_READ(p->p_fd, &filed0, sizeof (filed0))) { 321 warnx("can't read filedesc at %#llx for pid %d", (unsigned long long)p->p_fd, Pid); 322 return; 323 } 324 if (!KVM_READ(p->p_cwdi, &cwdi, sizeof(cwdi))) { 325 warnx("can't read cwdinfo at %#llx for pid %d", (unsigned long long)p->p_cwdi, Pid); 326 return; 327 } 328 if (filed.fd_nfiles < 0 || filed.fd_lastfile >= filed.fd_nfiles || 329 filed.fd_freefile > filed.fd_lastfile + 1) { 330 dprintf("filedesc corrupted at %#llx for pid %d", (unsigned long long)p->p_fd, Pid); 331 return; 332 } 333 /* 334 * root directory vnode, if one 335 */ 336 if (cwdi.cwdi_rdir) 337 vtrans(cwdi.cwdi_rdir, RDIR, FREAD); 338 /* 339 * current working directory vnode 340 */ 341 vtrans(cwdi.cwdi_cdir, CDIR, FREAD); 342 /* 343 * ktrace vnode, if one 344 */ 345 if (p->p_tracep) 346 ftrans((struct file *)(intptr_t)p->p_tracep, TRACE); 347 /* 348 * open files 349 */ 350 #define FPSIZE (sizeof (struct file *)) 351 ALLOC_OFILES(filed.fd_lastfile+1); 352 if (filed.fd_nfiles > NDFILE) { 353 if (!KVM_READ(filed.fd_ofiles, ofiles, 354 (filed.fd_lastfile+1) * FPSIZE)) { 355 dprintf("can't read file structures at %p for pid %d", 356 filed.fd_ofiles, Pid); 357 return; 358 } 359 } else 360 (void)memmove(ofiles, filed0.fd_dfiles, 361 (filed.fd_lastfile+1) * FPSIZE); 362 for (i = 0; i <= filed.fd_lastfile; i++) { 363 if (ofiles[i] == NULL) 364 continue; 365 ftrans(ofiles[i], i); 366 } 367 } 368 369 static void 370 ftrans(struct file *fp, int i) 371 { 372 struct file file; 373 374 if (!KVM_READ(fp, &file, sizeof (struct file))) { 375 dprintf("can't read file %d at %p for pid %d", 376 i, fp, Pid); 377 return; 378 } 379 switch (file.f_type) { 380 case DTYPE_VNODE: 381 vtrans((struct vnode *)file.f_data, i, file.f_flag); 382 break; 383 case DTYPE_SOCKET: 384 if (checkfile == 0) 385 socktrans((struct socket *)file.f_data, i); 386 break; 387 case DTYPE_PIPE: 388 if (checkfile == 0) 389 ptrans(&file, (struct pipe *)file.f_data, i); 390 break; 391 case DTYPE_KQUEUE: 392 if (checkfile == 0) 393 kqueuetrans((void *)file.f_data, i); 394 break; 395 default: 396 dprintf("unknown file type %d for file %d of pid %d", 397 file.f_type, i, Pid); 398 break; 399 } 400 } 401 402 static const char * 403 vfilestat(struct vnode *vp, struct filestat *fsp) 404 { 405 const char *badtype = NULL; 406 407 if (vp->v_type == VNON || vp->v_tag == VT_NON) 408 badtype = "none"; 409 else if (vp->v_type == VBAD) 410 badtype = "bad"; 411 else 412 switch (vp->v_tag) { 413 case VT_UFS: 414 case VT_LFS: 415 case VT_MFS: 416 if (!ufs_filestat(vp, fsp)) 417 badtype = "error"; 418 break; 419 case VT_MSDOSFS: 420 if (!msdosfs_filestat(vp, fsp)) 421 badtype = "error"; 422 break; 423 case VT_NFS: 424 if (!nfs_filestat(vp, fsp)) 425 badtype = "error"; 426 break; 427 case VT_EXT2FS: 428 if (!ext2fs_filestat(vp, fsp)) 429 badtype = "error"; 430 break; 431 case VT_ISOFS: 432 if (!isofs_filestat(vp, fsp)) 433 badtype = "error"; 434 break; 435 case VT_NTFS: 436 if (!ntfs_filestat(vp, fsp)) 437 badtype = "error"; 438 break; 439 case VT_PTYFS: 440 if (!ptyfs_filestat(vp, fsp)) 441 badtype = "error"; 442 break; 443 case VT_TMPFS: 444 if (!tmpfs_filestat(vp, fsp)) 445 badtype = "error"; 446 break; 447 case VT_NULL: 448 case VT_OVERLAY: 449 case VT_UMAP: 450 badtype = layer_filestat(vp, fsp); 451 break; 452 default: { 453 static char unknown[10]; 454 (void)snprintf(unknown, sizeof unknown, 455 "?(%x)", vp->v_tag); 456 badtype = unknown; 457 break; 458 } 459 } 460 return (badtype); 461 } 462 463 static void 464 vtrans(struct vnode *vp, int i, int flag) 465 { 466 struct vnode vn; 467 struct filestat fst; 468 char mode[15], rw[3]; 469 const char *badtype, *filename; 470 471 filename = NULL; 472 if (!KVM_READ(vp, &vn, sizeof(struct vnode))) { 473 dprintf("can't read vnode at %p for pid %d", vp, Pid); 474 return; 475 } 476 badtype = vfilestat(&vn, &fst); 477 if (checkfile) { 478 int fsmatch = 0; 479 DEVS *d; 480 481 if (badtype) 482 return; 483 for (d = devs; d != NULL; d = d->next) 484 if (d->fsid == fst.fsid) { 485 fsmatch = 1; 486 if (d->ino == fst.fileid) { 487 filename = d->name; 488 break; 489 } 490 } 491 if (fsmatch == 0 || (filename == NULL && fsflg == 0)) 492 return; 493 } 494 PREFIX(i); 495 if (badtype) { 496 (void)printf(" - - %10s -\n", badtype); 497 return; 498 } 499 if (nflg) 500 (void)printf(" %2d,%-2d", major(fst.fsid), minor(fst.fsid)); 501 else 502 (void)printf(" %-8s", getmnton(vn.v_mount)); 503 if (nflg) 504 (void)snprintf(mode, sizeof mode, "%o", fst.mode); 505 else 506 strmode(fst.mode, mode); 507 (void)printf(" %7lu %*s", (unsigned long)fst.fileid, nflg ? 5 : 10, mode); 508 switch (vn.v_type) { 509 case VBLK: 510 case VCHR: { 511 char *name; 512 513 if (nflg || ((name = devname(fst.rdev, vn.v_type == VCHR ? 514 S_IFCHR : S_IFBLK)) == NULL)) 515 (void)printf(" %2d,%-2d", major(fst.rdev), 516 minor(fst.rdev)); 517 else 518 (void)printf(" %6s", name); 519 break; 520 } 521 default: 522 (void)printf(" %6lld", (long long)fst.size); 523 } 524 rw[0] = '\0'; 525 if (flag & FREAD) 526 (void)strlcat(rw, "r", sizeof(rw)); 527 if (flag & FWRITE) 528 (void)strlcat(rw, "w", sizeof(rw)); 529 (void)printf(" %-2s", rw); 530 if (filename && !fsflg) 531 (void)printf(" %s", filename); 532 (void)putchar('\n'); 533 } 534 535 static int 536 ufs_filestat(struct vnode *vp, struct filestat *fsp) 537 { 538 struct inode inode; 539 union dinode { 540 struct ufs1_dinode dp1; 541 struct ufs2_dinode dp2; 542 } dip; 543 544 if (!KVM_READ(VTOI(vp), &inode, sizeof (inode))) { 545 dprintf("can't read inode at %p for pid %d", VTOI(vp), Pid); 546 return 0; 547 } 548 549 if (!KVM_READ(inode.i_din.ffs1_din, &dip, sizeof(struct ufs1_dinode))) { 550 dprintf("can't read dinode at %p for pid %d", 551 inode.i_din.ffs1_din, Pid); 552 return 0; 553 } 554 if (inode.i_size == dip.dp1.di_size) 555 fsp->rdev = dip.dp1.di_rdev; 556 else { 557 if (!KVM_READ(inode.i_din.ffs1_din, &dip, 558 sizeof(struct ufs2_dinode))) { 559 dprintf("can't read dinode at %p for pid %d", 560 inode.i_din.ffs1_din, Pid); 561 return 0; 562 } 563 fsp->rdev = dip.dp2.di_rdev; 564 } 565 566 fsp->fsid = inode.i_dev & 0xffff; 567 fsp->fileid = (long)inode.i_number; 568 fsp->mode = (mode_t)inode.i_mode; 569 fsp->size = inode.i_size; 570 571 return 1; 572 } 573 574 static int 575 ext2fs_filestat(struct vnode *vp, struct filestat *fsp) 576 { 577 struct inode inode; 578 u_int16_t mode; 579 u_int32_t size; 580 581 if (!KVM_READ(VTOI(vp), &inode, sizeof (inode))) { 582 dprintf("can't read inode at %p for pid %d", VTOI(vp), Pid); 583 return 0; 584 } 585 fsp->fsid = inode.i_dev & 0xffff; 586 fsp->fileid = (long)inode.i_number; 587 588 if (!KVM_READ(&inode.i_e2fs_mode, &mode, sizeof mode)) { 589 dprintf("can't read inode %p's mode at %p for pid %d", VTOI(vp), 590 &inode.i_e2fs_mode, Pid); 591 return 0; 592 } 593 fsp->mode = mode; 594 595 if (!KVM_READ(&inode.i_e2fs_size, &size, sizeof size)) { 596 dprintf("can't read inode %p's size at %p for pid %d", VTOI(vp), 597 &inode.i_e2fs_size, Pid); 598 return 0; 599 } 600 fsp->size = size; 601 fsp->rdev = 0; /* XXX */ 602 return 1; 603 } 604 605 static int 606 nfs_filestat(struct vnode *vp, struct filestat *fsp) 607 { 608 struct nfsnode nfsnode; 609 struct vattr va; 610 611 if (!KVM_READ(VTONFS(vp), &nfsnode, sizeof (nfsnode))) { 612 dprintf("can't read nfsnode at %p for pid %d", VTONFS(vp), 613 Pid); 614 return 0; 615 } 616 if (!KVM_READ(nfsnode.n_vattr, &va, sizeof(va))) { 617 dprintf("can't read vnode attributes at %p for pid %d", 618 nfsnode.n_vattr, Pid); 619 return 0; 620 } 621 fsp->fsid = va.va_fsid; 622 fsp->fileid = va.va_fileid; 623 fsp->size = nfsnode.n_size; 624 fsp->rdev = va.va_rdev; 625 fsp->mode = (mode_t)va.va_mode | getftype(vp->v_type); 626 627 return 1; 628 } 629 630 static int 631 msdosfs_filestat(struct vnode *vp, struct filestat *fsp) 632 { 633 struct denode de; 634 struct msdosfsmount mp; 635 636 if (!KVM_READ(VTONFS(vp), &de, sizeof(de))) { 637 dprintf("can't read denode at %p for pid %d", VTONFS(vp), 638 Pid); 639 return 0; 640 } 641 if (!KVM_READ(de.de_pmp, &mp, sizeof(mp))) { 642 dprintf("can't read mount struct at %p for pid %d", de.de_pmp, 643 Pid); 644 return 0; 645 } 646 647 fsp->fsid = de.de_dev & 0xffff; 648 fsp->fileid = 0; /* XXX see msdosfs_vptofh() for more info */ 649 fsp->size = de.de_FileSize; 650 fsp->rdev = 0; /* msdosfs doesn't support device files */ 651 fsp->mode = (0777 & mp.pm_mask) | getftype(vp->v_type); 652 return 1; 653 } 654 655 static const char * 656 layer_filestat(struct vnode *vp, struct filestat *fsp) 657 { 658 struct layer_node layer_node; 659 struct mount mount; 660 struct vnode vn; 661 const char *badtype; 662 663 if (!KVM_READ(VTOLAYER(vp), &layer_node, sizeof(layer_node))) { 664 dprintf("can't read layer_node at %p for pid %d", 665 VTOLAYER(vp), Pid); 666 return ("error"); 667 } 668 if (!KVM_READ(vp->v_mount, &mount, sizeof(struct mount))) { 669 dprintf("can't read mount struct at %p for pid %d", 670 vp->v_mount, Pid); 671 return ("error"); 672 } 673 vp = layer_node.layer_lowervp; 674 if (!KVM_READ(vp, &vn, sizeof(struct vnode))) { 675 dprintf("can't read vnode at %p for pid %d", vp, Pid); 676 return ("error"); 677 } 678 if ((badtype = vfilestat(&vn, fsp)) == NULL) 679 fsp->fsid = mount.mnt_stat.f_fsidx.__fsid_val[0]; 680 return (badtype); 681 } 682 683 static char * 684 getmnton(struct mount *m) 685 { 686 static struct mount mount; 687 static struct mtab { 688 struct mtab *next; 689 struct mount *m; 690 char mntonname[MNAMELEN]; 691 } *mhead = NULL; 692 struct mtab *mt; 693 694 for (mt = mhead; mt != NULL; mt = mt->next) 695 if (m == mt->m) 696 return (mt->mntonname); 697 if (!KVM_READ(m, &mount, sizeof(struct mount))) { 698 warnx("can't read mount table at %p", m); 699 return (NULL); 700 } 701 if ((mt = malloc(sizeof (struct mtab))) == NULL) { 702 err(1, "malloc(%u)", (unsigned int)sizeof(struct mtab)); 703 } 704 mt->m = m; 705 (void)memmove(&mt->mntonname[0], &mount.mnt_stat.f_mntonname[0], 706 MNAMELEN); 707 mt->next = mhead; 708 mhead = mt; 709 return (mt->mntonname); 710 } 711 712 #ifdef INET6 713 static const char * 714 inet6_addrstr(struct in6_addr *p) 715 { 716 struct sockaddr_in6 sin6; 717 static char hbuf[NI_MAXHOST]; 718 const int niflags = NI_NUMERICHOST; 719 720 (void)memset(&sin6, 0, sizeof(sin6)); 721 sin6.sin6_family = AF_INET6; 722 sin6.sin6_len = sizeof(struct sockaddr_in6); 723 sin6.sin6_addr = *p; 724 if (IN6_IS_ADDR_LINKLOCAL(p) && 725 *(u_int16_t *)&sin6.sin6_addr.s6_addr[2] != 0) { 726 sin6.sin6_scope_id = 727 ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]); 728 sin6.sin6_addr.s6_addr[2] = sin6.sin6_addr.s6_addr[3] = 0; 729 } 730 731 if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, 732 hbuf, sizeof(hbuf), NULL, 0, niflags)) 733 return "invalid"; 734 735 return hbuf; 736 } 737 #endif 738 739 static void 740 socktrans(struct socket *sock, int i) 741 { 742 static const char *stypename[] = { 743 "unused", /* 0 */ 744 "stream", /* 1 */ 745 "dgram", /* 2 */ 746 "raw", /* 3 */ 747 "rdm", /* 4 */ 748 "seqpak" /* 5 */ 749 }; 750 #define STYPEMAX 5 751 struct socket so; 752 struct protosw proto; 753 struct domain dom; 754 struct inpcb inpcb; 755 #ifdef INET6 756 struct in6pcb in6pcb; 757 #endif 758 struct unpcb unpcb; 759 int len; 760 char dname[32]; 761 #ifdef INET6 762 char xaddrbuf[NI_MAXHOST + 2]; 763 #endif 764 765 PREFIX(i); 766 767 /* fill in socket */ 768 if (!KVM_READ(sock, &so, sizeof(struct socket))) { 769 dprintf("can't read sock at %p", sock); 770 goto bad; 771 } 772 773 /* fill in protosw entry */ 774 if (!KVM_READ(so.so_proto, &proto, sizeof(struct protosw))) { 775 dprintf("can't read protosw at %p", so.so_proto); 776 goto bad; 777 } 778 779 /* fill in domain */ 780 if (!KVM_READ(proto.pr_domain, &dom, sizeof(struct domain))) { 781 dprintf("can't read domain at %p", proto.pr_domain); 782 goto bad; 783 } 784 785 if ((len = kvm_read(kd, (u_long)dom.dom_name, dname, 786 sizeof(dname) - 1)) != sizeof(dname) -1) { 787 dprintf("can't read domain name at %p", dom.dom_name); 788 dname[0] = '\0'; 789 } 790 else 791 dname[len] = '\0'; 792 793 if ((u_short)so.so_type > STYPEMAX) 794 (void)printf("* %s ?%d", dname, so.so_type); 795 else 796 (void)printf("* %s %s", dname, stypename[so.so_type]); 797 798 /* 799 * protocol specific formatting 800 * 801 * Try to find interesting things to print. For TCP, the interesting 802 * thing is the address of the tcpcb, for UDP and others, just the 803 * inpcb (socket pcb). For UNIX domain, its the address of the socket 804 * pcb and the address of the connected pcb (if connected). Otherwise 805 * just print the protocol number and address of the socket itself. 806 * The idea is not to duplicate netstat, but to make available enough 807 * information for further analysis. 808 */ 809 switch(dom.dom_family) { 810 case AF_INET: 811 getinetproto(proto.pr_protocol); 812 if (proto.pr_protocol == IPPROTO_TCP) { 813 if (so.so_pcb == NULL) 814 break; 815 if (kvm_read(kd, (u_long)so.so_pcb, (char *)&inpcb, 816 sizeof(struct inpcb)) != sizeof(struct inpcb)) { 817 dprintf("can't read inpcb at %p", so.so_pcb); 818 goto bad; 819 } 820 (void)printf(" %lx", (long)inpcb.inp_ppcb); 821 (void)printf(" %s:%d", 822 inpcb.inp_laddr.s_addr == INADDR_ANY ? "*" : 823 inet_ntoa(inpcb.inp_laddr), ntohs(inpcb.inp_lport)); 824 if (inpcb.inp_fport) { 825 (void)printf(" <-> %s:%d", 826 inpcb.inp_faddr.s_addr == INADDR_ANY ? "*" : 827 inet_ntoa(inpcb.inp_faddr), 828 ntohs(inpcb.inp_fport)); 829 } 830 } else if (proto.pr_protocol == IPPROTO_UDP) { 831 if (so.so_pcb == NULL) 832 break; 833 if (kvm_read(kd, (u_long)so.so_pcb, (char *)&inpcb, 834 sizeof(struct inpcb)) != sizeof(struct inpcb)) { 835 dprintf("can't read inpcb at %p", so.so_pcb); 836 goto bad; 837 } 838 (void)printf(" %lx", (long)so.so_pcb); 839 (void)printf(" %s:%d", 840 inpcb.inp_laddr.s_addr == INADDR_ANY ? "*" : 841 inet_ntoa(inpcb.inp_laddr), ntohs(inpcb.inp_lport)); 842 if (inpcb.inp_fport) 843 (void)printf(" <-> %s:%d", 844 inpcb.inp_faddr.s_addr == INADDR_ANY ? "*" : 845 inet_ntoa(inpcb.inp_faddr), 846 ntohs(inpcb.inp_fport)); 847 } else if (so.so_pcb) 848 (void)printf(" %lx", (long)so.so_pcb); 849 break; 850 #ifdef INET6 851 case AF_INET6: 852 getinetproto(proto.pr_protocol); 853 if (proto.pr_protocol == IPPROTO_TCP) { 854 if (so.so_pcb == NULL) 855 break; 856 if (kvm_read(kd, (u_long)so.so_pcb, (char *)&in6pcb, 857 sizeof(struct in6pcb)) != sizeof(struct in6pcb)) { 858 dprintf("can't read in6pcb at %p", so.so_pcb); 859 goto bad; 860 } 861 (void)printf(" %lx", (long)in6pcb.in6p_ppcb); 862 (void)snprintf(xaddrbuf, sizeof(xaddrbuf), "[%s]", 863 inet6_addrstr(&in6pcb.in6p_laddr)); 864 (void)printf(" %s:%d", 865 IN6_IS_ADDR_UNSPECIFIED(&in6pcb.in6p_laddr) ? "*" : 866 xaddrbuf, 867 ntohs(in6pcb.in6p_lport)); 868 if (in6pcb.in6p_fport) { 869 (void)snprintf(xaddrbuf, sizeof(xaddrbuf), 870 "[%s]", inet6_addrstr(&in6pcb.in6p_faddr)); 871 (void)printf(" <-> %s:%d", 872 IN6_IS_ADDR_UNSPECIFIED(&in6pcb.in6p_faddr) ? "*" : 873 xaddrbuf, 874 ntohs(in6pcb.in6p_fport)); 875 } 876 } else if (proto.pr_protocol == IPPROTO_UDP) { 877 if (so.so_pcb == NULL) 878 break; 879 if (kvm_read(kd, (u_long)so.so_pcb, (char *)&in6pcb, 880 sizeof(struct in6pcb)) != sizeof(struct in6pcb)) { 881 dprintf("can't read inpcb at %p", so.so_pcb); 882 goto bad; 883 } 884 (void)printf(" %lx", (long)so.so_pcb); 885 (void)snprintf(xaddrbuf, sizeof(xaddrbuf), "[%s]", 886 inet6_addrstr(&in6pcb.in6p_laddr)); 887 (void)printf(" %s:%d", 888 IN6_IS_ADDR_UNSPECIFIED(&in6pcb.in6p_laddr) ? "*" : 889 xaddrbuf, 890 ntohs(in6pcb.in6p_lport)); 891 if (in6pcb.in6p_fport) { 892 (void)snprintf(xaddrbuf, sizeof(xaddrbuf), "[%s]", 893 inet6_addrstr(&in6pcb.in6p_faddr)); 894 (void)printf(" <-> %s:%d", 895 IN6_IS_ADDR_UNSPECIFIED(&in6pcb.in6p_faddr) ? "*" : 896 xaddrbuf, 897 ntohs(in6pcb.in6p_fport)); 898 } 899 } else if (so.so_pcb) 900 (void)printf(" %lx", (long)so.so_pcb); 901 break; 902 #endif 903 case AF_LOCAL: 904 /* print address of pcb and connected pcb */ 905 if (so.so_pcb) { 906 (void)printf(" %lx", (long)so.so_pcb); 907 if (kvm_read(kd, (u_long)so.so_pcb, (char *)&unpcb, 908 sizeof(struct unpcb)) != sizeof(struct unpcb)){ 909 dprintf("can't read unpcb at %p", so.so_pcb); 910 goto bad; 911 } 912 if (unpcb.unp_conn) { 913 char shoconn[4], *cp; 914 915 cp = shoconn; 916 if (!(so.so_state & SS_CANTRCVMORE)) 917 *cp++ = '<'; 918 *cp++ = '-'; 919 if (!(so.so_state & SS_CANTSENDMORE)) 920 *cp++ = '>'; 921 *cp = '\0'; 922 (void)printf(" %s %lx", shoconn, 923 (long)unpcb.unp_conn); 924 } 925 } 926 break; 927 default: 928 /* print protocol number and socket address */ 929 (void)printf(" %d %lx", proto.pr_protocol, (long)sock); 930 } 931 (void)printf("\n"); 932 return; 933 bad: 934 (void)printf("* error\n"); 935 } 936 937 static void 938 ptrans(struct file *fp, struct pipe *cpipe, int i) 939 { 940 struct pipe cp; 941 942 PREFIX(i); 943 944 /* fill in pipe */ 945 if (!KVM_READ(cpipe, &cp, sizeof(struct pipe))) { 946 dprintf("can't read pipe at %p", cpipe); 947 goto bad; 948 } 949 950 /* pipe descriptor is either read or write, never both */ 951 (void)printf("* pipe %p %s %p %s%s%s", cpipe, 952 (fp->f_flag & FWRITE) ? "->" : "<-", 953 cp.pipe_peer, 954 (fp->f_flag & FWRITE) ? "w" : "r", 955 (fp->f_flag & FNONBLOCK) ? "n" : "", 956 (cp.pipe_state & PIPE_ASYNC) ? "a" : ""); 957 (void)printf("\n"); 958 return; 959 bad: 960 (void)printf("* error\n"); 961 } 962 963 static void 964 kqueuetrans(void *kq, int i) 965 { 966 967 PREFIX(i); 968 (void)printf("* kqueue %lx", (long)kq); 969 (void)printf("\n"); 970 } 971 972 /* 973 * getinetproto -- 974 * print name of protocol number 975 */ 976 static void 977 getinetproto(int number) 978 { 979 const char *cp; 980 981 switch (number) { 982 case IPPROTO_IP: 983 cp = "ip"; break; 984 case IPPROTO_ICMP: 985 cp ="icmp"; break; 986 case IPPROTO_GGP: 987 cp ="ggp"; break; 988 case IPPROTO_TCP: 989 cp ="tcp"; break; 990 case IPPROTO_EGP: 991 cp ="egp"; break; 992 case IPPROTO_PUP: 993 cp ="pup"; break; 994 case IPPROTO_UDP: 995 cp ="udp"; break; 996 case IPPROTO_IDP: 997 cp ="idp"; break; 998 case IPPROTO_RAW: 999 cp ="raw"; break; 1000 case IPPROTO_ICMPV6: 1001 cp ="icmp6"; break; 1002 default: 1003 (void)printf(" %d", number); 1004 return; 1005 } 1006 (void)printf(" %s", cp); 1007 } 1008 1009 static int 1010 getfname(const char *filename) 1011 { 1012 struct stat statbuf; 1013 DEVS *cur; 1014 1015 if (stat(filename, &statbuf)) { 1016 warn("stat(%s)", filename); 1017 return 0; 1018 } 1019 if ((cur = malloc(sizeof(DEVS))) == NULL) { 1020 err(1, "malloc(%u)", (unsigned int)sizeof(DEVS)); 1021 } 1022 cur->next = devs; 1023 devs = cur; 1024 1025 cur->ino = statbuf.st_ino; 1026 cur->fsid = statbuf.st_dev & 0xffff; 1027 cur->name = filename; 1028 return 1; 1029 } 1030 1031 mode_t 1032 getftype(enum vtype v_type) 1033 { 1034 mode_t ftype; 1035 1036 switch (v_type) { 1037 case VREG: 1038 ftype = S_IFREG; 1039 break; 1040 case VDIR: 1041 ftype = S_IFDIR; 1042 break; 1043 case VBLK: 1044 ftype = S_IFBLK; 1045 break; 1046 case VCHR: 1047 ftype = S_IFCHR; 1048 break; 1049 case VLNK: 1050 ftype = S_IFLNK; 1051 break; 1052 case VSOCK: 1053 ftype = S_IFSOCK; 1054 break; 1055 case VFIFO: 1056 ftype = S_IFIFO; 1057 break; 1058 default: 1059 ftype = 0; 1060 break; 1061 }; 1062 1063 return ftype; 1064 } 1065 1066 static void 1067 usage(void) 1068 { 1069 (void)fprintf(stderr, "Usage: %s [-fnv] [-p pid] [-u user] " 1070 "[-N system] [-M core] [file ...]\n", getprogname()); 1071 exit(1); 1072 } 1073
Indexes created Sun Sep 21 20:09:37 GMT 2025