fstat.c revision 1.87
1 /* $NetBSD: fstat.c,v 1.87 2008/12/29 00:59:08 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\ 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 1.87 2008/12/29 00:59:08 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(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; 316 317 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_MISC: 402 case DTYPE_KQUEUE: 403 case DTYPE_CRYPTO: 404 case DTYPE_MQUEUE: 405 if (checkfile == 0) 406 misctrans(&file); 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(" %2llu,%-2llu", 514 (unsigned long long)major(fst.fsid), 515 (unsigned long long)minor(fst.fsid)); 516 else 517 (void)printf(" %-8s", getmnton(vn.v_mount)); 518 if (nflg) 519 (void)snprintf(mode, sizeof mode, "%o", fst.mode); 520 else 521 strmode(fst.mode, mode); 522 (void)printf(" %7lu %*s", (unsigned long)fst.fileid, nflg ? 5 : 10, mode); 523 switch (vn.v_type) { 524 case VBLK: 525 case VCHR: { 526 char *name; 527 528 if (nflg || ((name = devname(fst.rdev, vn.v_type == VCHR ? 529 S_IFCHR : S_IFBLK)) == NULL)) 530 (void)printf(" %2llu,%-2llu", 531 (unsigned long long)major(fst.rdev), 532 (unsigned long long)minor(fst.rdev)); 533 else 534 (void)printf(" %6s", name); 535 break; 536 } 537 default: 538 (void)printf(" %6lld", (long long)fst.size); 539 } 540 rw[0] = '\0'; 541 if (flag & FREAD) 542 (void)strlcat(rw, "r", sizeof(rw)); 543 if (flag & FWRITE) 544 (void)strlcat(rw, "w", sizeof(rw)); 545 (void)printf(" %-2s", rw); 546 if (filename && !fsflg) 547 (void)printf(" %s", filename); 548 (void)putchar('\n'); 549 } 550 551 static int 552 ufs_filestat(struct vnode *vp, struct filestat *fsp) 553 { 554 struct inode inode; 555 union dinode { 556 struct ufs1_dinode dp1; 557 struct ufs2_dinode dp2; 558 } dip; 559 560 if (!KVM_READ(VTOI(vp), &inode, sizeof (inode))) { 561 dprintf("can't read inode at %p for pid %d", VTOI(vp), Pid); 562 return 0; 563 } 564 565 if (!KVM_READ(inode.i_din.ffs1_din, &dip, sizeof(struct ufs1_dinode))) { 566 dprintf("can't read dinode at %p for pid %d", 567 inode.i_din.ffs1_din, Pid); 568 return 0; 569 } 570 if (inode.i_size == dip.dp1.di_size) 571 fsp->rdev = dip.dp1.di_rdev; 572 else { 573 if (!KVM_READ(inode.i_din.ffs1_din, &dip, 574 sizeof(struct ufs2_dinode))) { 575 dprintf("can't read dinode at %p for pid %d", 576 inode.i_din.ffs1_din, Pid); 577 return 0; 578 } 579 fsp->rdev = dip.dp2.di_rdev; 580 } 581 582 fsp->fsid = inode.i_dev & 0xffff; 583 fsp->fileid = (long)inode.i_number; 584 fsp->mode = (mode_t)inode.i_mode; 585 fsp->size = inode.i_size; 586 587 return 1; 588 } 589 590 static int 591 ext2fs_filestat(struct vnode *vp, struct filestat *fsp) 592 { 593 struct inode inode; 594 u_int16_t mode; 595 u_int32_t size; 596 597 if (!KVM_READ(VTOI(vp), &inode, sizeof (inode))) { 598 dprintf("can't read inode at %p for pid %d", VTOI(vp), Pid); 599 return 0; 600 } 601 fsp->fsid = inode.i_dev & 0xffff; 602 fsp->fileid = (long)inode.i_number; 603 604 if (!KVM_READ(&inode.i_e2fs_mode, &mode, sizeof mode)) { 605 dprintf("can't read inode %p's mode at %p for pid %d", VTOI(vp), 606 &inode.i_e2fs_mode, Pid); 607 return 0; 608 } 609 fsp->mode = mode; 610 611 if (!KVM_READ(&inode.i_e2fs_size, &size, sizeof size)) { 612 dprintf("can't read inode %p's size at %p for pid %d", VTOI(vp), 613 &inode.i_e2fs_size, Pid); 614 return 0; 615 } 616 fsp->size = size; 617 fsp->rdev = 0; /* XXX */ 618 return 1; 619 } 620 621 static int 622 nfs_filestat(struct vnode *vp, struct filestat *fsp) 623 { 624 struct nfsnode nfsnode; 625 struct vattr va; 626 627 if (!KVM_READ(VTONFS(vp), &nfsnode, sizeof (nfsnode))) { 628 dprintf("can't read nfsnode at %p for pid %d", VTONFS(vp), 629 Pid); 630 return 0; 631 } 632 if (!KVM_READ(nfsnode.n_vattr, &va, sizeof(va))) { 633 dprintf("can't read vnode attributes at %p for pid %d", 634 nfsnode.n_vattr, Pid); 635 return 0; 636 } 637 fsp->fsid = va.va_fsid; 638 fsp->fileid = va.va_fileid; 639 fsp->size = nfsnode.n_size; 640 fsp->rdev = va.va_rdev; 641 fsp->mode = (mode_t)va.va_mode | getftype(vp->v_type); 642 643 return 1; 644 } 645 646 static int 647 msdosfs_filestat(struct vnode *vp, struct filestat *fsp) 648 { 649 struct denode de; 650 struct msdosfsmount mp; 651 652 if (!KVM_READ(VTONFS(vp), &de, sizeof(de))) { 653 dprintf("can't read denode at %p for pid %d", VTONFS(vp), 654 Pid); 655 return 0; 656 } 657 if (!KVM_READ(de.de_pmp, &mp, sizeof(mp))) { 658 dprintf("can't read mount struct at %p for pid %d", de.de_pmp, 659 Pid); 660 return 0; 661 } 662 663 fsp->fsid = de.de_dev & 0xffff; 664 fsp->fileid = 0; /* XXX see msdosfs_vptofh() for more info */ 665 fsp->size = de.de_FileSize; 666 fsp->rdev = 0; /* msdosfs doesn't support device files */ 667 fsp->mode = (0777 & mp.pm_mask) | getftype(vp->v_type); 668 return 1; 669 } 670 671 static const char * 672 layer_filestat(struct vnode *vp, struct filestat *fsp) 673 { 674 struct layer_node layer_node; 675 struct mount mount; 676 struct vnode vn; 677 const char *badtype; 678 679 if (!KVM_READ(VTOLAYER(vp), &layer_node, sizeof(layer_node))) { 680 dprintf("can't read layer_node at %p for pid %d", 681 VTOLAYER(vp), Pid); 682 return ("error"); 683 } 684 if (!KVM_READ(vp->v_mount, &mount, sizeof(struct mount))) { 685 dprintf("can't read mount struct at %p for pid %d", 686 vp->v_mount, Pid); 687 return ("error"); 688 } 689 vp = layer_node.layer_lowervp; 690 if (!KVM_READ(vp, &vn, sizeof(struct vnode))) { 691 dprintf("can't read vnode at %p for pid %d", vp, Pid); 692 return ("error"); 693 } 694 if ((badtype = vfilestat(&vn, fsp)) == NULL) 695 fsp->fsid = mount.mnt_stat.f_fsidx.__fsid_val[0]; 696 return (badtype); 697 } 698 699 static char * 700 getmnton(struct mount *m) 701 { 702 static struct mount mount; 703 static struct mtab { 704 struct mtab *next; 705 struct mount *m; 706 char mntonname[MNAMELEN]; 707 } *mhead = NULL; 708 struct mtab *mt; 709 710 for (mt = mhead; mt != NULL; mt = mt->next) 711 if (m == mt->m) 712 return (mt->mntonname); 713 if (!KVM_READ(m, &mount, sizeof(struct mount))) { 714 warnx("can't read mount table at %p", m); 715 return (NULL); 716 } 717 if ((mt = malloc(sizeof (struct mtab))) == NULL) { 718 err(1, "malloc(%u)", (unsigned int)sizeof(struct mtab)); 719 } 720 mt->m = m; 721 (void)memmove(&mt->mntonname[0], &mount.mnt_stat.f_mntonname[0], 722 MNAMELEN); 723 mt->next = mhead; 724 mhead = mt; 725 return (mt->mntonname); 726 } 727 728 #ifdef INET6 729 static const char * 730 inet6_addrstr(struct in6_addr *p) 731 { 732 struct sockaddr_in6 sin6; 733 static char hbuf[NI_MAXHOST]; 734 const int niflags = NI_NUMERICHOST; 735 736 (void)memset(&sin6, 0, sizeof(sin6)); 737 sin6.sin6_family = AF_INET6; 738 sin6.sin6_len = sizeof(struct sockaddr_in6); 739 sin6.sin6_addr = *p; 740 if (IN6_IS_ADDR_LINKLOCAL(p) && 741 *(u_int16_t *)&sin6.sin6_addr.s6_addr[2] != 0) { 742 sin6.sin6_scope_id = 743 ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]); 744 sin6.sin6_addr.s6_addr[2] = sin6.sin6_addr.s6_addr[3] = 0; 745 } 746 747 if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, 748 hbuf, sizeof(hbuf), NULL, 0, niflags)) 749 return "invalid"; 750 751 return hbuf; 752 } 753 #endif 754 755 static void 756 socktrans(struct socket *sock, int i) 757 { 758 static const char *stypename[] = { 759 "unused", /* 0 */ 760 "stream", /* 1 */ 761 "dgram", /* 2 */ 762 "raw", /* 3 */ 763 "rdm", /* 4 */ 764 "seqpak" /* 5 */ 765 }; 766 #define STYPEMAX 5 767 struct socket so; 768 struct protosw proto; 769 struct domain dom; 770 struct inpcb inpcb; 771 #ifdef INET6 772 struct in6pcb in6pcb; 773 #endif 774 struct unpcb unpcb; 775 int len; 776 char dname[32]; 777 #ifdef INET6 778 char xaddrbuf[NI_MAXHOST + 2]; 779 #endif 780 781 PREFIX(i); 782 783 /* fill in socket */ 784 if (!KVM_READ(sock, &so, sizeof(struct socket))) { 785 dprintf("can't read sock at %p", sock); 786 goto bad; 787 } 788 789 /* fill in protosw entry */ 790 if (!KVM_READ(so.so_proto, &proto, sizeof(struct protosw))) { 791 dprintf("can't read protosw at %p", so.so_proto); 792 goto bad; 793 } 794 795 /* fill in domain */ 796 if (!KVM_READ(proto.pr_domain, &dom, sizeof(struct domain))) { 797 dprintf("can't read domain at %p", proto.pr_domain); 798 goto bad; 799 } 800 801 if ((len = kvm_read(kd, (u_long)dom.dom_name, dname, 802 sizeof(dname) - 1)) != sizeof(dname) -1) { 803 dprintf("can't read domain name at %p", dom.dom_name); 804 dname[0] = '\0'; 805 } 806 else 807 dname[len] = '\0'; 808 809 if ((u_short)so.so_type > STYPEMAX) 810 (void)printf("* %s ?%d", dname, so.so_type); 811 else 812 (void)printf("* %s %s", dname, stypename[so.so_type]); 813 814 /* 815 * protocol specific formatting 816 * 817 * Try to find interesting things to print. For TCP, the interesting 818 * thing is the address of the tcpcb, for UDP and others, just the 819 * inpcb (socket pcb). For UNIX domain, its the address of the socket 820 * pcb and the address of the connected pcb (if connected). Otherwise 821 * just print the protocol number and address of the socket itself. 822 * The idea is not to duplicate netstat, but to make available enough 823 * information for further analysis. 824 */ 825 switch(dom.dom_family) { 826 case AF_INET: 827 getinetproto(proto.pr_protocol); 828 if (proto.pr_protocol == IPPROTO_TCP) { 829 if (so.so_pcb == NULL) 830 break; 831 if (kvm_read(kd, (u_long)so.so_pcb, (char *)&inpcb, 832 sizeof(struct inpcb)) != sizeof(struct inpcb)) { 833 dprintf("can't read inpcb at %p", so.so_pcb); 834 goto bad; 835 } 836 (void)printf(" %lx", (long)inpcb.inp_ppcb); 837 (void)printf(" %s:%d", 838 inpcb.inp_laddr.s_addr == INADDR_ANY ? "*" : 839 inet_ntoa(inpcb.inp_laddr), ntohs(inpcb.inp_lport)); 840 if (inpcb.inp_fport) { 841 (void)printf(" <-> %s:%d", 842 inpcb.inp_faddr.s_addr == INADDR_ANY ? "*" : 843 inet_ntoa(inpcb.inp_faddr), 844 ntohs(inpcb.inp_fport)); 845 } 846 } else if (proto.pr_protocol == IPPROTO_UDP) { 847 if (so.so_pcb == NULL) 848 break; 849 if (kvm_read(kd, (u_long)so.so_pcb, (char *)&inpcb, 850 sizeof(struct inpcb)) != sizeof(struct inpcb)) { 851 dprintf("can't read inpcb at %p", so.so_pcb); 852 goto bad; 853 } 854 (void)printf(" %lx", (long)so.so_pcb); 855 (void)printf(" %s:%d", 856 inpcb.inp_laddr.s_addr == INADDR_ANY ? "*" : 857 inet_ntoa(inpcb.inp_laddr), ntohs(inpcb.inp_lport)); 858 if (inpcb.inp_fport) 859 (void)printf(" <-> %s:%d", 860 inpcb.inp_faddr.s_addr == INADDR_ANY ? "*" : 861 inet_ntoa(inpcb.inp_faddr), 862 ntohs(inpcb.inp_fport)); 863 } else if (so.so_pcb) 864 (void)printf(" %lx", (long)so.so_pcb); 865 break; 866 #ifdef INET6 867 case AF_INET6: 868 getinetproto(proto.pr_protocol); 869 if (proto.pr_protocol == IPPROTO_TCP) { 870 if (so.so_pcb == NULL) 871 break; 872 if (kvm_read(kd, (u_long)so.so_pcb, (char *)&in6pcb, 873 sizeof(struct in6pcb)) != sizeof(struct in6pcb)) { 874 dprintf("can't read in6pcb at %p", so.so_pcb); 875 goto bad; 876 } 877 (void)printf(" %lx", (long)in6pcb.in6p_ppcb); 878 (void)snprintf(xaddrbuf, sizeof(xaddrbuf), "[%s]", 879 inet6_addrstr(&in6pcb.in6p_laddr)); 880 (void)printf(" %s:%d", 881 IN6_IS_ADDR_UNSPECIFIED(&in6pcb.in6p_laddr) ? "*" : 882 xaddrbuf, 883 ntohs(in6pcb.in6p_lport)); 884 if (in6pcb.in6p_fport) { 885 (void)snprintf(xaddrbuf, sizeof(xaddrbuf), 886 "[%s]", inet6_addrstr(&in6pcb.in6p_faddr)); 887 (void)printf(" <-> %s:%d", 888 IN6_IS_ADDR_UNSPECIFIED(&in6pcb.in6p_faddr) ? "*" : 889 xaddrbuf, 890 ntohs(in6pcb.in6p_fport)); 891 } 892 } else if (proto.pr_protocol == IPPROTO_UDP) { 893 if (so.so_pcb == NULL) 894 break; 895 if (kvm_read(kd, (u_long)so.so_pcb, (char *)&in6pcb, 896 sizeof(struct in6pcb)) != sizeof(struct in6pcb)) { 897 dprintf("can't read inpcb at %p", so.so_pcb); 898 goto bad; 899 } 900 (void)printf(" %lx", (long)so.so_pcb); 901 (void)snprintf(xaddrbuf, sizeof(xaddrbuf), "[%s]", 902 inet6_addrstr(&in6pcb.in6p_laddr)); 903 (void)printf(" %s:%d", 904 IN6_IS_ADDR_UNSPECIFIED(&in6pcb.in6p_laddr) ? "*" : 905 xaddrbuf, 906 ntohs(in6pcb.in6p_lport)); 907 if (in6pcb.in6p_fport) { 908 (void)snprintf(xaddrbuf, sizeof(xaddrbuf), "[%s]", 909 inet6_addrstr(&in6pcb.in6p_faddr)); 910 (void)printf(" <-> %s:%d", 911 IN6_IS_ADDR_UNSPECIFIED(&in6pcb.in6p_faddr) ? "*" : 912 xaddrbuf, 913 ntohs(in6pcb.in6p_fport)); 914 } 915 } else if (so.so_pcb) 916 (void)printf(" %lx", (long)so.so_pcb); 917 break; 918 #endif 919 case AF_LOCAL: 920 /* print address of pcb and connected pcb */ 921 if (so.so_pcb) { 922 (void)printf(" %lx", (long)so.so_pcb); 923 if (kvm_read(kd, (u_long)so.so_pcb, (char *)&unpcb, 924 sizeof(struct unpcb)) != sizeof(struct unpcb)){ 925 dprintf("can't read unpcb at %p", so.so_pcb); 926 goto bad; 927 } 928 if (unpcb.unp_conn) { 929 char shoconn[4], *cp; 930 931 cp = shoconn; 932 if (!(so.so_state & SS_CANTRCVMORE)) 933 *cp++ = '<'; 934 *cp++ = '-'; 935 if (!(so.so_state & SS_CANTSENDMORE)) 936 *cp++ = '>'; 937 *cp = '\0'; 938 (void)printf(" %s %lx", shoconn, 939 (long)unpcb.unp_conn); 940 } 941 } 942 break; 943 default: 944 /* print protocol number and socket address */ 945 (void)printf(" %d %lx", proto.pr_protocol, (long)sock); 946 } 947 (void)printf("\n"); 948 return; 949 bad: 950 (void)printf("* error\n"); 951 } 952 953 static void 954 ptrans(struct file *fp, struct pipe *cpipe, int i) 955 { 956 struct pipe cp; 957 958 PREFIX(i); 959 960 /* fill in pipe */ 961 if (!KVM_READ(cpipe, &cp, sizeof(struct pipe))) { 962 dprintf("can't read pipe at %p", cpipe); 963 goto bad; 964 } 965 966 /* pipe descriptor is either read or write, never both */ 967 (void)printf("* pipe %p %s %p %s%s%s", cpipe, 968 (fp->f_flag & FWRITE) ? "->" : "<-", 969 cp.pipe_peer, 970 (fp->f_flag & FWRITE) ? "w" : "r", 971 (fp->f_flag & FNONBLOCK) ? "n" : "", 972 (cp.pipe_state & PIPE_ASYNC) ? "a" : ""); 973 (void)printf("\n"); 974 return; 975 bad: 976 (void)printf("* error\n"); 977 } 978 979 static void 980 misctrans(struct file *file) 981 { 982 983 PREFIX((int)file->f_type); 984 pmisc(file, dtypes[file->f_type]); 985 } 986 987 /* 988 * getinetproto -- 989 * print name of protocol number 990 */ 991 static void 992 getinetproto(int number) 993 { 994 const char *cp; 995 996 switch (number) { 997 case IPPROTO_IP: 998 cp = "ip"; break; 999 case IPPROTO_ICMP: 1000 cp ="icmp"; break; 1001 case IPPROTO_GGP: 1002 cp ="ggp"; break; 1003 case IPPROTO_TCP: 1004 cp ="tcp"; break; 1005 case IPPROTO_EGP: 1006 cp ="egp"; break; 1007 case IPPROTO_PUP: 1008 cp ="pup"; break; 1009 case IPPROTO_UDP: 1010 cp ="udp"; break; 1011 case IPPROTO_IDP: 1012 cp ="idp"; break; 1013 case IPPROTO_RAW: 1014 cp ="raw"; break; 1015 case IPPROTO_ICMPV6: 1016 cp ="icmp6"; break; 1017 default: 1018 (void)printf(" %d", number); 1019 return; 1020 } 1021 (void)printf(" %s", cp); 1022 } 1023 1024 static int 1025 getfname(const char *filename) 1026 { 1027 struct stat statbuf; 1028 DEVS *cur; 1029 1030 if (stat(filename, &statbuf)) { 1031 warn("stat(%s)", filename); 1032 return 0; 1033 } 1034 if ((cur = malloc(sizeof(DEVS))) == NULL) { 1035 err(1, "malloc(%u)", (unsigned int)sizeof(DEVS)); 1036 } 1037 cur->next = devs; 1038 devs = cur; 1039 1040 cur->ino = statbuf.st_ino; 1041 cur->fsid = statbuf.st_dev & 0xffff; 1042 cur->name = filename; 1043 return 1; 1044 } 1045 1046 mode_t 1047 getftype(enum vtype v_type) 1048 { 1049 mode_t ftype; 1050 1051 switch (v_type) { 1052 case VREG: 1053 ftype = S_IFREG; 1054 break; 1055 case VDIR: 1056 ftype = S_IFDIR; 1057 break; 1058 case VBLK: 1059 ftype = S_IFBLK; 1060 break; 1061 case VCHR: 1062 ftype = S_IFCHR; 1063 break; 1064 case VLNK: 1065 ftype = S_IFLNK; 1066 break; 1067 case VSOCK: 1068 ftype = S_IFSOCK; 1069 break; 1070 case VFIFO: 1071 ftype = S_IFIFO; 1072 break; 1073 default: 1074 ftype = 0; 1075 break; 1076 }; 1077 1078 return ftype; 1079 } 1080 1081 static void 1082 usage(void) 1083 { 1084 (void)fprintf(stderr, "Usage: %s [-fnv] [-p pid] [-u user] " 1085 "[-N system] [-M core] [file ...]\n", getprogname()); 1086 exit(1); 1087 } 1088
Indexes created Mon Sep 22 13:09:51 GMT 2025