1 /*- 2 * Copyright (c) 1988, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * @(#) Copyright (c) 1988, 1993 The Regents of the University of California. All rights reserved. 34 * @(#)fstat.c 8.3 (Berkeley) 5/2/95 35 * $FreeBSD: src/usr.bin/fstat/fstat.c,v 1.21.2.7 2001/11/21 10:49:37 dwmalone Exp $ 36 * $DragonFly: src/usr.bin/fstat/fstat.c,v 1.26 2008/05/03 04:13:12 dillon Exp $ 37 */ 38 39 #include <sys/user.h> 40 #include <sys/param.h> 41 #include <sys/time.h> 42 #include <sys/stat.h> 43 #include <sys/vnode.h> 44 #include <sys/socket.h> 45 #include <sys/socketvar.h> 46 #include <sys/domain.h> 47 #include <sys/protosw.h> 48 #include <sys/un.h> 49 #include <sys/unpcb.h> 50 #include <sys/sysctl.h> 51 #include <sys/filedesc.h> 52 #include <sys/queue.h> 53 #include <sys/pipe.h> 54 #include <sys/conf.h> 55 #include <sys/file.h> 56 #include <sys/ktrace.h> 57 #include <vfs/ufs/quota.h> 58 #include <vfs/ufs/inode.h> 59 #include <sys/mount.h> 60 #include <sys/namecache.h> 61 #include <nfs/nfsproto.h> 62 #include <nfs/rpcv2.h> 63 #include <nfs/nfs.h> 64 #include <nfs/nfsnode.h> 65 66 67 #include <vm/vm.h> 68 #include <vm/vm_map.h> 69 #include <vm/vm_object.h> 70 71 #include <net/route.h> 72 #include <netinet/in.h> 73 #include <netinet/in_systm.h> 74 #include <netinet/ip.h> 75 #include <netinet/in_pcb.h> 76 77 #include <ctype.h> 78 #include <err.h> 79 #include <fcntl.h> 80 #include <kvm.h> 81 #include <limits.h> 82 #include <nlist.h> 83 #include <paths.h> 84 #include <pwd.h> 85 #include <stdio.h> 86 #include <stdlib.h> 87 #include <string.h> 88 #include <unistd.h> 89 #include <netdb.h> 90 91 #include "fstat.h" 92 93 #define TEXT -1 94 #define CDIR -2 95 #define RDIR -3 96 #define TRACE -4 97 #define MMAP -5 98 99 DEVS *devs; 100 101 static void make_printable(char *buf, int len); 102 103 #ifdef notdef 104 struct nlist nl[] = { 105 { "" }, 106 }; 107 #endif 108 109 int fsflg, /* show files on same filesystem as file(s) argument */ 110 pflg, /* show files open by a particular pid */ 111 uflg; /* show files open by a particular (effective) user */ 112 int checkfile; /* true if restricting to particular files or filesystems */ 113 int nflg; /* (numerical) display f.s. and rdev as dev_t */ 114 int vflg; /* display errors in locating kernel data objects etc... */ 115 int mflg; /* include memory-mapped files */ 116 int wflg_mnt = 16; 117 int wflg_cmd = 10; 118 int pid_width = 5; 119 int ino_width = 6; 120 121 122 struct fdnode *ofiles; /* buffer of pointers to file structures */ 123 int maxfiles; 124 125 #define ALLOC_OFILES(d) \ 126 if ((d) > maxfiles) { \ 127 free(ofiles); \ 128 ofiles = malloc((d) * sizeof(struct fdnode)); \ 129 if (ofiles == NULL) { \ 130 err(1, NULL); \ 131 } \ 132 maxfiles = (d); \ 133 } 134 135 kvm_t *kd; 136 137 void dofiles(struct kinfo_proc *kp, struct proc *p); 138 void dommap(struct proc *p); 139 void vtrans(struct vnode *vp, struct nchandle *ncr, int i, int flag); 140 int ufs_filestat(struct vnode *vp, struct filestat *fsp); 141 int nfs_filestat(struct vnode *vp, struct filestat *fsp); 142 char *getmnton(struct mount *m, struct namecache_list *ncplist, struct nchandle *ncr); 143 void pipetrans(struct pipe *pi, int i, int flag); 144 void socktrans(struct socket *sock, int i); 145 void getinetproto(int number); 146 int getfname(const char *filename); 147 void usage(void); 148 149 150 int 151 main(int argc, char **argv) 152 { 153 struct passwd *passwd; 154 struct kinfo_proc *p, *plast; 155 struct proc proc; 156 int arg, ch, what; 157 char *memf, *nlistf; 158 char buf[_POSIX2_LINE_MAX]; 159 int cnt; 160 161 arg = 0; 162 what = KERN_PROC_ALL; 163 nlistf = memf = NULL; 164 while ((ch = getopt(argc, argv, "fmnp:u:vwN:M:")) != -1) 165 switch((char)ch) { 166 case 'f': 167 fsflg = 1; 168 break; 169 case 'M': 170 memf = optarg; 171 break; 172 case 'N': 173 nlistf = optarg; 174 break; 175 case 'm': 176 mflg = 1; 177 break; 178 case 'n': 179 nflg = 1; 180 break; 181 case 'p': 182 if (pflg++) 183 usage(); 184 if (!isdigit(*optarg)) { 185 warnx("-p requires a process id"); 186 usage(); 187 } 188 what = KERN_PROC_PID; 189 arg = atoi(optarg); 190 break; 191 case 'u': 192 if (uflg++) 193 usage(); 194 if (!(passwd = getpwnam(optarg))) 195 errx(1, "%s: unknown uid", optarg); 196 what = KERN_PROC_UID; 197 arg = passwd->pw_uid; 198 break; 199 case 'v': 200 vflg = 1; 201 break; 202 case 'w': 203 wflg_mnt = 40; 204 wflg_cmd = 16; 205 break; 206 case '?': 207 default: 208 usage(); 209 } 210 211 if (*(argv += optind)) { 212 for (; *argv; ++argv) { 213 if (getfname(*argv)) 214 checkfile = 1; 215 } 216 if (!checkfile) /* file(s) specified, but none accessable */ 217 exit(1); 218 } 219 220 ALLOC_OFILES(256); /* reserve space for file pointers */ 221 222 if (fsflg && !checkfile) { 223 /* -f with no files means use wd */ 224 if (getfname(".") == 0) 225 exit(1); 226 checkfile = 1; 227 } 228 229 /* 230 * Discard setgid privileges if not the running kernel so that bad 231 * guys can't print interesting stuff from kernel memory. 232 */ 233 if (nlistf != NULL || memf != NULL) 234 setgid(getgid()); 235 236 if ((kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, buf)) == NULL) 237 errx(1, "%s", buf); 238 #ifdef notdef 239 if (kvm_nlist(kd, nl) != 0) 240 errx(1, "no namelist: %s", kvm_geterr(kd)); 241 #endif 242 if ((p = kvm_getprocs(kd, what, arg, &cnt)) == NULL) 243 errx(1, "%s", kvm_geterr(kd)); 244 if (nflg) 245 printf("USER %-*.*s %*.*s FD DEV %*.*s MODE SZ|DV R/W", 246 wflg_cmd, wflg_cmd, "CMD", 247 pid_width, pid_width, "PID", 248 ino_width, ino_width, "INUM"); 249 else 250 printf("USER %-*.*s %*.*s FD %-*.*s %*.*s MODE SZ|DV R/W", 251 wflg_cmd, wflg_cmd, "CMD", 252 pid_width, pid_width, "PID", 253 wflg_mnt, wflg_mnt, "PATH", 254 ino_width, ino_width, "INUM"); 255 if (checkfile && fsflg == 0) 256 printf(" NAME\n"); 257 else 258 putchar('\n'); 259 260 for (plast = &p[cnt]; p < plast; ++p) { 261 if (p->kp_stat == SZOMB) 262 continue; 263 if (!kread((void *)p->kp_paddr, &proc, sizeof(proc))) { 264 dprintf(stderr, "can't read proc at %p for pid %d\n", 265 (void *)p->kp_paddr, Pid); 266 continue; 267 } 268 dofiles(p, &proc); 269 if (mflg) 270 dommap(&proc); 271 } 272 exit(0); 273 } 274 275 char *Uname, *Comm; 276 int Pid; 277 278 #define PREFIX(i) \ 279 printf("%-8.8s %-*s %*d", Uname, wflg_cmd, Comm, pid_width, Pid); \ 280 switch(i) { \ 281 case TEXT: \ 282 printf(" text"); \ 283 break; \ 284 case CDIR: \ 285 printf(" wd"); \ 286 break; \ 287 case RDIR: \ 288 printf(" root"); \ 289 break; \ 290 case TRACE: \ 291 printf(" tr"); \ 292 break; \ 293 case MMAP: \ 294 printf(" mmap"); \ 295 break; \ 296 default: \ 297 printf(" %4d", i); \ 298 break; \ 299 } 300 301 /* 302 * print open files attributed to this process 303 */ 304 void 305 dofiles(struct kinfo_proc *kp, struct proc *p) 306 { 307 int i; 308 struct file file; 309 struct filedesc filed; 310 struct ktrace_node ktrace_node; 311 312 Uname = user_from_uid(kp->kp_uid, 0); 313 Pid = kp->kp_pid; 314 Comm = kp->kp_comm; 315 make_printable(Comm, strlen(Comm)); 316 317 if (p->p_fd == NULL) 318 return; 319 if (!kread(p->p_fd, &filed, sizeof (filed))) { 320 dprintf(stderr, "can't read filedesc at %p for pid %d\n", 321 (void *)p->p_fd, Pid); 322 return; 323 } 324 /* 325 * root directory vnode, if one 326 */ 327 if (filed.fd_rdir) 328 vtrans(filed.fd_rdir, &filed.fd_nrdir, RDIR, FREAD); 329 /* 330 * current working directory vnode 331 */ 332 vtrans(filed.fd_cdir, &filed.fd_ncdir, CDIR, FREAD); 333 /* 334 * ktrace vnode, if one 335 */ 336 if (p->p_tracenode) { 337 if (kread(p->p_tracenode, &ktrace_node, sizeof (ktrace_node))) 338 vtrans(ktrace_node.kn_vp, NULL, TRACE, FREAD|FWRITE); 339 } 340 /* 341 * text vnode, if one 342 */ 343 if (p->p_textvp) 344 vtrans(p->p_textvp, NULL, TEXT, FREAD); 345 /* 346 * open files 347 */ 348 ALLOC_OFILES(filed.fd_lastfile+1); 349 if (!kread(filed.fd_files, ofiles, 350 (filed.fd_lastfile+1) * sizeof(struct fdnode))) { 351 dprintf(stderr, 352 "can't read file structures at %p for pid %d\n", 353 (void *)filed.fd_files, Pid); 354 return; 355 } 356 for (i = 0; i <= filed.fd_lastfile; i++) { 357 if (ofiles[i].fp == NULL) 358 continue; 359 if (!kread(ofiles[i].fp, &file, sizeof (struct file))) { 360 dprintf(stderr, "can't read file %d at %p for pid %d\n", 361 i, (void *)ofiles[i].fp, Pid); 362 continue; 363 } 364 if (file.f_type == DTYPE_VNODE) { 365 vtrans((struct vnode *)file.f_data, &file.f_nchandle, i, 366 file.f_flag); 367 } else if (file.f_type == DTYPE_SOCKET) { 368 if (checkfile == 0) 369 socktrans((struct socket *)file.f_data, i); 370 } 371 #ifdef DTYPE_PIPE 372 else if (file.f_type == DTYPE_PIPE) { 373 if (checkfile == 0) 374 pipetrans((struct pipe *)file.f_data, i, 375 file.f_flag); 376 } 377 #endif 378 #ifdef DTYPE_FIFO 379 else if (file.f_type == DTYPE_FIFO) { 380 if (checkfile == 0) 381 vtrans((struct vnode *)file.f_data, &file.f_nchandle, 382 i, file.f_flag); 383 } 384 #endif 385 else { 386 dprintf(stderr, 387 "unknown file type %d for file %d of pid %d\n", 388 file.f_type, i, Pid); 389 } 390 } 391 } 392 393 void 394 dommap(struct proc *p) 395 { 396 struct vmspace vmspace; 397 vm_map_t map; 398 struct vm_map_entry entry; 399 vm_map_entry_t entryp; 400 struct vm_object object; 401 vm_object_t objp; 402 int prot, fflags; 403 404 if (!kread(p->p_vmspace, &vmspace, sizeof(vmspace))) { 405 dprintf(stderr, "can't read vmspace at %p for pid %d\n", 406 (void *)p->p_vmspace, Pid); 407 return; 408 } 409 410 map = &vmspace.vm_map; 411 412 for (entryp = map->header.next; entryp != &p->p_vmspace->vm_map.header; 413 entryp = entry.next) { 414 if (!kread(entryp, &entry, sizeof(entry))) { 415 dprintf(stderr, 416 "can't read vm_map_entry at %p for pid %d\n", 417 (void *)entryp, Pid); 418 return; 419 } 420 421 if (entry.maptype == VM_MAPTYPE_SUBMAP) 422 continue; 423 424 if ((objp = entry.object.vm_object) == NULL) 425 continue; 426 427 for (; objp; objp = object.backing_object) { 428 if (!kread(objp, &object, sizeof(object))) { 429 dprintf(stderr, 430 "can't read vm_object at %p for pid %d\n", 431 (void *)objp, Pid); 432 return; 433 } 434 } 435 436 prot = entry.protection; 437 fflags = (prot & VM_PROT_READ ? FREAD : 0) | 438 (prot & VM_PROT_WRITE ? FWRITE : 0); 439 440 switch (object.type) { 441 case OBJT_VNODE: 442 vtrans((struct vnode *)object.handle, NULL, 443 MMAP, fflags); 444 break; 445 default: 446 break; 447 } 448 } 449 } 450 451 void 452 vtrans(struct vnode *vp, struct nchandle *ncr, int i, int flag) 453 { 454 struct vnode vn; 455 struct filestat fst; 456 char rw[3], mode[15]; 457 const char *badtype = NULL, *filename; 458 459 filename = badtype = NULL; 460 if (!kread(vp, &vn, sizeof (struct vnode))) { 461 dprintf(stderr, "can't read vnode at %p for pid %d\n", 462 (void *)vp, Pid); 463 return; 464 } 465 if (vn.v_type == VNON || vn.v_tag == VT_NON) 466 badtype = "none"; 467 else if (vn.v_type == VBAD) 468 badtype = "bad"; 469 else 470 switch (vn.v_tag) { 471 case VT_UFS: 472 if (!ufs_filestat(&vn, &fst)) 473 badtype = "error"; 474 break; 475 case VT_MFS: 476 if (!ufs_filestat(&vn, &fst)) 477 badtype = "error"; 478 break; 479 case VT_NFS: 480 if (!nfs_filestat(&vn, &fst)) 481 badtype = "error"; 482 break; 483 484 case VT_MSDOSFS: 485 if (!msdosfs_filestat(&vn, &fst)) 486 badtype = "error"; 487 break; 488 489 case VT_ISOFS: 490 if (!isofs_filestat(&vn, &fst)) 491 badtype = "error"; 492 break; 493 494 default: { 495 static char unknown[10]; 496 sprintf(unknown, "?(%x)", vn.v_tag); 497 badtype=unknown; 498 break; 499 } 500 } 501 if (checkfile) { 502 int fsmatch = 0; 503 DEVS *d; 504 505 if (badtype) 506 return; 507 for (d = devs; d != NULL; d = d->next) 508 if (d->fsid == fst.fsid) { 509 fsmatch = 1; 510 if (d->ino == (ino_t)fst.fileid) { 511 filename = d->name; 512 break; 513 } 514 } 515 if (fsmatch == 0 || (filename == NULL && fsflg == 0)) 516 return; 517 } 518 PREFIX(i); 519 if (badtype) { 520 (void)printf(" %-*s %10s -\n", 521 wflg_mnt, 522 getmnton(vn.v_mount, &vn.v_namecache, ncr), 523 badtype); 524 return; 525 } 526 if (nflg) 527 (void)printf(" %3d,%-9d ", major(fst.fsid), minor(fst.fsid)); 528 else 529 (void)printf(" %-*s", wflg_mnt, getmnton(vn.v_mount, &vn.v_namecache, ncr)); 530 if (nflg) 531 (void)sprintf(mode, "%o", fst.mode); 532 else 533 strmode(fst.mode, mode); 534 (void)printf(" %*ld %10s", ino_width, fst.fileid, mode); 535 switch (vn.v_type) { 536 case VBLK: 537 case VCHR: { 538 char *name; 539 540 if (nflg || ((name = devname(fst.rdev, vn.v_type == VCHR ? 541 S_IFCHR : S_IFBLK)) == NULL)) 542 printf(" %3d,%-4d", major(fst.rdev), minor(fst.rdev)); 543 else 544 printf(" %8s", name); 545 break; 546 } 547 default: 548 printf(" %8llu", fst.size); 549 } 550 rw[0] = '\0'; 551 if (flag & FREAD) 552 strcat(rw, "r"); 553 if (flag & FWRITE) 554 strcat(rw, "w"); 555 printf(" %2s", rw); 556 if (filename && !fsflg) 557 printf(" %s", filename); 558 putchar('\n'); 559 } 560 561 int 562 ufs_filestat(struct vnode *vp, struct filestat *fsp) 563 { 564 struct inode inode; 565 566 if (!kread(VTOI(vp), &inode, sizeof (inode))) { 567 dprintf(stderr, "can't read inode at %p for pid %d\n", 568 (void *)VTOI(vp), Pid); 569 return 0; 570 } 571 /* 572 * The st_dev from stat(2) is a udev_t. These kernel structures 573 * contain dev_t structures. We need to convert to udev to make 574 * comparisons 575 */ 576 fsp->fsid = dev2udev(inode.i_dev); 577 fsp->fileid = (long)inode.i_number; 578 fsp->mode = (mode_t)inode.i_mode; 579 fsp->size = inode.i_size; 580 fsp->rdev = inode.i_rdev; 581 582 return 1; 583 } 584 585 int 586 nfs_filestat(struct vnode *vp, struct filestat *fsp) 587 { 588 struct nfsnode nfsnode; 589 mode_t mode; 590 591 if (!kread(VTONFS(vp), &nfsnode, sizeof (nfsnode))) { 592 dprintf(stderr, "can't read nfsnode at %p for pid %d\n", 593 (void *)VTONFS(vp), Pid); 594 return 0; 595 } 596 fsp->fsid = nfsnode.n_vattr.va_fsid; 597 fsp->fileid = nfsnode.n_vattr.va_fileid; 598 fsp->size = nfsnode.n_size; 599 fsp->rdev = makeudev(nfsnode.n_vattr.va_rmajor, 600 nfsnode.n_vattr.va_rminor); 601 mode = (mode_t)nfsnode.n_vattr.va_mode; 602 switch (vp->v_type) { 603 case VREG: 604 mode |= S_IFREG; 605 break; 606 case VDIR: 607 mode |= S_IFDIR; 608 break; 609 case VBLK: 610 mode |= S_IFBLK; 611 break; 612 case VCHR: 613 mode |= S_IFCHR; 614 break; 615 case VLNK: 616 mode |= S_IFLNK; 617 break; 618 case VSOCK: 619 mode |= S_IFSOCK; 620 break; 621 case VFIFO: 622 mode |= S_IFIFO; 623 break; 624 case VDATABASE: 625 break; 626 case VNON: 627 case VBAD: 628 return 0; 629 }; 630 fsp->mode = mode; 631 632 return 1; 633 } 634 635 636 char * 637 getmnton(struct mount *m, struct namecache_list *ncplist, struct nchandle *ncr) 638 { 639 static struct mount mount_l; 640 static struct mtab { 641 struct mtab *next; 642 struct mount *m; 643 char mntonname[MNAMELEN]; 644 } *mhead = NULL; 645 struct mtab *mt; 646 struct namecache *ncp; 647 struct namecache ncp_copy; 648 static char path[1024]; 649 int i; 650 651 /* 652 * If no ncp is passed try to find one via ncplist. Make sure 653 * we are using the correct mount pointer or the matching code 654 * will not know how to transition mount points properly. 655 */ 656 if (ncr == NULL || ncr->ncp == NULL) { 657 ncp = ncplist->tqh_first; 658 } else { 659 ncp = ncr->ncp; 660 if (ncr->mount) 661 m = ncr->mount; 662 } 663 664 /* 665 * If we have an ncp, traceback the path. This is a kvm pointer. 666 */ 667 if (ncp) { 668 if (!kread(m, &mount_l, sizeof(struct mount))) { 669 warnx("can't read mount table at %p", (void *)m); 670 return (NULL); 671 } 672 i = sizeof(path) - 1; 673 path[i] = 0; 674 while (ncp) { 675 /* 676 * If this is the root of the mount then traverse 677 * to the parent mount. 678 */ 679 if (ncp == mount_l.mnt_ncmountpt.ncp) { 680 ncp = mount_l.mnt_ncmounton.ncp; 681 if (ncp == NULL) 682 break; 683 m = mount_l.mnt_ncmounton.mount; 684 if (!kread(m, &mount_l, sizeof(struct mount))) { 685 warnx("can't read mount table at %p", (void *)m); 686 return (NULL); 687 } 688 } 689 690 /* 691 * Ok, pull out the ncp and extract the name 692 */ 693 if (!kread(ncp, &ncp_copy, sizeof(ncp_copy))) { 694 warnx("can't read ncp at %p", ncp); 695 return (NULL); 696 } 697 if (i <= ncp_copy.nc_nlen) 698 break; 699 i -= ncp_copy.nc_nlen; 700 if (!kread(ncp_copy.nc_name, path + i, ncp_copy.nc_nlen)) { 701 warnx("can't read ncp %p path component at %p", ncp, ncp_copy.nc_name); 702 return (NULL); 703 } 704 make_printable(path + i, ncp_copy.nc_nlen); 705 path[--i] = '/'; 706 ncp = ncp_copy.nc_parent; 707 } 708 if (i == sizeof(path) - 1) 709 path[--i] = '/'; 710 return(path + i); 711 } 712 713 /* 714 * If all else fails print out the mount point path 715 */ 716 for (mt = mhead; mt != NULL; mt = mt->next) { 717 if (m == mt->m) 718 return (mt->mntonname); 719 } 720 if (!kread(m, &mount_l, sizeof(struct mount))) { 721 warnx("can't read mount table at %p", (void *)m); 722 return (NULL); 723 } 724 if ((mt = malloc(sizeof (struct mtab))) == NULL) 725 err(1, NULL); 726 mt->m = m; 727 bcopy(&mount_l.mnt_stat.f_mntonname[0], &mt->mntonname[0], MNAMELEN); 728 mt->next = mhead; 729 mhead = mt; 730 return (mt->mntonname); 731 } 732 733 void 734 pipetrans(struct pipe *pi, int i, int flag) 735 { 736 struct pipe pip; 737 char rw[3]; 738 739 PREFIX(i); 740 741 /* fill in socket */ 742 if (!kread(pi, &pip, sizeof(struct pipe))) { 743 dprintf(stderr, "can't read pipe at %p\n", (void *)pi); 744 goto bad; 745 } 746 747 printf("* pipe %8lx <-> %8lx", (u_long)pi, (u_long)pip.pipe_peer); 748 printf(" %6d", (int)(pip.pipe_buffer.windex - pip.pipe_buffer.rindex)); 749 rw[0] = '\0'; 750 if (flag & FREAD) 751 strcat(rw, "r"); 752 if (flag & FWRITE) 753 strcat(rw, "w"); 754 printf(" %2s", rw); 755 putchar('\n'); 756 return; 757 758 bad: 759 printf("* error\n"); 760 } 761 762 void 763 socktrans(struct socket *sock, int i) 764 { 765 static const char *stypename[] = { 766 "unused", /* 0 */ 767 "stream", /* 1 */ 768 "dgram", /* 2 */ 769 "raw", /* 3 */ 770 "rdm", /* 4 */ 771 "seqpak" /* 5 */ 772 }; 773 #define STYPEMAX 5 774 struct socket so; 775 struct protosw proto; 776 struct domain dom; 777 struct inpcb inpcb; 778 struct unpcb unpcb; 779 int len; 780 char dname[32]; 781 782 PREFIX(i); 783 784 /* fill in socket */ 785 if (!kread(sock, &so, sizeof(struct socket))) { 786 dprintf(stderr, "can't read sock at %p\n", (void *)sock); 787 goto bad; 788 } 789 790 /* fill in protosw entry */ 791 if (!kread(so.so_proto, &proto, sizeof(struct protosw))) { 792 dprintf(stderr, "can't read protosw at %p", 793 (void *)so.so_proto); 794 goto bad; 795 } 796 797 /* fill in domain */ 798 if (!kread(proto.pr_domain, &dom, sizeof(struct domain))) { 799 dprintf(stderr, "can't read domain at %p\n", 800 (const void *)proto.pr_domain); 801 goto bad; 802 } 803 804 if ((len = kvm_read(kd, (u_long)dom.dom_name, dname, 805 sizeof(dname) - 1)) < 0) { 806 dprintf(stderr, "can't read domain name at %p\n", 807 (void *)dom.dom_name); 808 dname[0] = '\0'; 809 } 810 else 811 dname[len] = '\0'; 812 813 if ((u_short)so.so_type > STYPEMAX) 814 printf("* %s ?%d", dname, so.so_type); 815 else 816 printf("* %s %s", dname, stypename[so.so_type]); 817 818 /* 819 * protocol specific formatting 820 * 821 * Try to find interesting things to print. For tcp, the interesting 822 * thing is the address of the tcpcb, for udp and others, just the 823 * inpcb (socket pcb). For unix domain, its the address of the socket 824 * pcb and the address of the connected pcb (if connected). Otherwise 825 * just print the protocol number and address of the socket itself. 826 * The idea is not to duplicate netstat, but to make available enough 827 * information for further analysis. 828 */ 829 switch(dom.dom_family) { 830 case AF_INET: 831 case AF_INET6: 832 getinetproto(proto.pr_protocol); 833 if (proto.pr_protocol == IPPROTO_TCP ) { 834 if (so.so_pcb) { 835 if (kvm_read(kd, (u_long)so.so_pcb, 836 (char *)&inpcb, sizeof(struct inpcb)) 837 != sizeof(struct inpcb)) { 838 dprintf(stderr, 839 "can't read inpcb at %p\n", 840 (void *)so.so_pcb); 841 goto bad; 842 } 843 printf(" %lx", (u_long)inpcb.inp_ppcb); 844 } 845 } 846 else if (so.so_pcb) 847 printf(" %lx", (u_long)so.so_pcb); 848 break; 849 case AF_UNIX: 850 /* print address of pcb and connected pcb */ 851 if (so.so_pcb) { 852 printf(" %lx", (u_long)so.so_pcb); 853 if (kvm_read(kd, (u_long)so.so_pcb, (char *)&unpcb, 854 sizeof(struct unpcb)) != sizeof(struct unpcb)){ 855 dprintf(stderr, "can't read unpcb at %p\n", 856 (void *)so.so_pcb); 857 goto bad; 858 } 859 if (unpcb.unp_conn) { 860 char shoconn[4], *cp; 861 862 cp = shoconn; 863 if (!(so.so_state & SS_CANTRCVMORE)) 864 *cp++ = '<'; 865 *cp++ = '-'; 866 if (!(so.so_state & SS_CANTSENDMORE)) 867 *cp++ = '>'; 868 *cp = '\0'; 869 printf(" %s %lx", shoconn, 870 (u_long)unpcb.unp_conn); 871 } 872 } 873 break; 874 default: 875 /* print protocol number and socket address */ 876 printf(" %d %lx", proto.pr_protocol, (u_long)sock); 877 } 878 printf("\n"); 879 return; 880 bad: 881 printf("* error\n"); 882 } 883 884 885 /* 886 * Read the cdev structure in the kernel (as pointed to by a dev_t) 887 * in order to work out the associated udev_t 888 */ 889 udev_t 890 dev2udev(void *dev) 891 { 892 struct cdev si; 893 894 if (kread(dev, &si, sizeof si)) { 895 if ((si.si_umajor & 0xffffff00) || 896 (si.si_uminor & 0x0000ff00)) { 897 return NOUDEV; 898 } 899 return((si.si_umajor << 8) | si.si_uminor); 900 } else { 901 dprintf(stderr, "can't convert dev_t %p to a udev_t\n", dev); 902 return NOUDEV; 903 } 904 } 905 906 udev_t 907 makeudev(int x, int y) 908 { 909 if ((x & 0xffffff00) || (y & 0x0000ff00)) 910 return NOUDEV; 911 return ((x << 8) | y); 912 } 913 914 /* 915 * getinetproto -- 916 * print name of protocol number 917 */ 918 void 919 getinetproto(int number) 920 { 921 static int isopen; 922 struct protoent *pe; 923 924 if (!isopen) 925 setprotoent(++isopen); 926 if ((pe = getprotobynumber(number)) != NULL) 927 printf(" %s", pe->p_name); 928 else 929 printf(" %d", number); 930 } 931 932 int 933 getfname(const char *filename) 934 { 935 struct stat statbuf; 936 DEVS *cur; 937 938 if (stat(filename, &statbuf)) { 939 warn("%s", filename); 940 return(0); 941 } 942 if ((cur = malloc(sizeof(DEVS))) == NULL) 943 err(1, NULL); 944 cur->next = devs; 945 devs = cur; 946 947 cur->ino = statbuf.st_ino; 948 cur->fsid = statbuf.st_dev; 949 cur->name = filename; 950 return(1); 951 } 952 953 void 954 usage(void) 955 { 956 (void)fprintf(stderr, 957 "usage: fstat [-fmnv] [-p pid] [-u user] [-N system] [-M core] [file ...]\n"); 958 exit(1); 959 } 960 961 static 962 void 963 make_printable(char *buf, int len) 964 { 965 while (len > 0) { 966 if (!isprint(*buf)) 967 *buf = '?'; 968 ++buf; 969 --len; 970 } 971 } 972 973 ssize_t 974 kread(const void *kaddr, void *uaddr, size_t nbytes) 975 { 976 if (nbytes > 0x10000000) 977 return(0); 978 979 if (kvm_read(kd, (u_long)kaddr, (char *)uaddr, nbytes) == (ssize_t)nbytes) 980 return(1); 981 else 982 return(0); 983 } 984 985