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. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * @(#) Copyright (c) 1988, 1993 The Regents of the University of California. All rights reserved. 30 * @(#)fstat.c 8.3 (Berkeley) 5/2/95 31 * $FreeBSD: src/usr.bin/fstat/fstat.c,v 1.21.2.7 2001/11/21 10:49:37 dwmalone Exp $ 32 */ 33 34 #include <sys/user.h> 35 #include <sys/param.h> 36 #include <sys/time.h> 37 #include <sys/stat.h> 38 #include <sys/vnode.h> 39 #include <sys/socket.h> 40 #include <sys/socketvar.h> 41 #include <sys/domain.h> 42 #include <sys/protosw.h> 43 #include <sys/un.h> 44 #include <sys/unpcb.h> 45 #include <sys/sysctl.h> 46 #include <sys/filedesc.h> 47 #include <sys/queue.h> 48 #include <sys/pipe.h> 49 #include <sys/conf.h> 50 #include <sys/file.h> 51 #include <sys/ktrace.h> 52 #include <vfs/ufs/quota.h> 53 #include <vfs/ufs/inode.h> 54 #include <sys/mount.h> 55 #include <sys/namecache.h> 56 #include <nfs/nfsproto.h> 57 #include <nfs/rpcv2.h> 58 #include <nfs/nfs.h> 59 #include <nfs/nfsnode.h> 60 #include <sys/devfs.h> 61 62 #include <vm/vm.h> 63 #include <vm/vm_map.h> 64 #include <vm/vm_object.h> 65 66 #include <net/route.h> 67 #include <netinet/in.h> 68 #include <netinet/in_systm.h> 69 #include <netinet/ip.h> 70 #include <netinet/in_pcb.h> 71 72 #include <ctype.h> 73 #include <err.h> 74 #include <fcntl.h> 75 #include <kvm.h> 76 #include <limits.h> 77 #include <nlist.h> 78 #include <paths.h> 79 #include <pwd.h> 80 #include <stdio.h> 81 #include <stdlib.h> 82 #include <string.h> 83 #include <unistd.h> 84 #include <netdb.h> 85 86 #include "fstat.h" 87 88 #define TEXT -1 89 #define CDIR -2 90 #define RDIR -3 91 #define TRACE -4 92 #define MMAP -5 93 94 DEVS *devs; 95 96 static void make_printable(char *buf, int len); 97 98 #ifdef notdef 99 struct nlist nl[] = { 100 { "" }, 101 }; 102 #endif 103 104 int fsflg, /* show files on same filesystem as file(s) argument */ 105 pflg, /* show files open by a particular pid */ 106 uflg; /* show files open by a particular (effective) user */ 107 int checkfile; /* true if restricting to particular files or filesystems */ 108 int nflg; /* (numerical) display f.s. and rdev as dev_t */ 109 int vflg; /* display errors in locating kernel data objects etc... */ 110 int mflg; /* include memory-mapped files */ 111 int wflg_mnt = 16; 112 int wflg_cmd = 10; 113 int pid_width = 5; 114 int ino_width = 6; 115 116 const char *Uname; 117 char *Comm; 118 int Pid; 119 120 struct fdnode *ofiles; /* buffer of pointers to file structures */ 121 int maxfiles; 122 123 #define ALLOC_OFILES(d) \ 124 if ((d) > maxfiles) { \ 125 free(ofiles); \ 126 ofiles = malloc((d) * sizeof(struct fdnode)); \ 127 if (ofiles == NULL) { \ 128 err(1, NULL); \ 129 } \ 130 maxfiles = (d); \ 131 } 132 133 kvm_t *kd; 134 135 static void dofiles(struct kinfo_proc *, struct proc *); 136 static void dommap(struct proc *); 137 static void vtrans(struct vnode *, struct nchandle *, int, int, off_t); 138 static int ufs_filestat(struct vnode *, struct filestat *); 139 static int nfs_filestat(struct vnode *, struct filestat *); 140 static int devfs_filestat(struct vnode *, struct filestat *); 141 static char *getmnton(struct mount *, struct namecache_list *, struct nchandle *); 142 static void pipetrans(struct pipe *, int, int); 143 static void socktrans(struct socket *, int); 144 static void getinetproto(int); 145 static int getfname(const char *); 146 static void usage(void) __dead2; 147 148 149 int 150 main(int argc, char **argv) 151 { 152 struct passwd *passwd; 153 struct kinfo_proc *p, *plast; 154 struct proc proc; 155 int arg, ch, what; 156 char *memf, *nlistf; 157 char buf[_POSIX2_LINE_MAX]; 158 int cnt; 159 160 arg = 0; 161 what = KERN_PROC_ALL; 162 nlistf = memf = NULL; 163 while ((ch = getopt(argc, argv, "fmnp:u:vwN:M:")) != -1) 164 switch((char)ch) { 165 case 'f': 166 fsflg = 1; 167 break; 168 case 'M': 169 memf = optarg; 170 break; 171 case 'N': 172 nlistf = optarg; 173 break; 174 case 'm': 175 mflg = 1; 176 break; 177 case 'n': 178 nflg = 1; 179 break; 180 case 'p': 181 if (pflg++) 182 usage(); 183 if (!isdigit(*optarg)) { 184 warnx("-p requires a process id"); 185 usage(); 186 } 187 what = KERN_PROC_PID; 188 arg = atoi(optarg); 189 break; 190 case 'u': 191 if (uflg++) 192 usage(); 193 if (!(passwd = getpwnam(optarg))) 194 errx(1, "%s: unknown uid", optarg); 195 what = KERN_PROC_UID; 196 arg = passwd->pw_uid; 197 break; 198 case 'v': 199 vflg = 1; 200 break; 201 case 'w': 202 wflg_mnt = 40; 203 wflg_cmd = 16; 204 break; 205 case '?': 206 default: 207 usage(); 208 } 209 210 if (*(argv += optind)) { 211 for (; *argv; ++argv) { 212 if (getfname(*argv)) 213 checkfile = 1; 214 } 215 if (!checkfile) /* file(s) specified, but none accessable */ 216 exit(1); 217 } 218 219 ALLOC_OFILES(256); /* reserve space for file pointers */ 220 221 if (fsflg && !checkfile) { 222 /* -f with no files means use wd */ 223 if (getfname(".") == 0) 224 exit(1); 225 checkfile = 1; 226 } 227 228 /* 229 * Discard setgid privileges if not the running kernel so that bad 230 * guys can't print interesting stuff from kernel memory. 231 */ 232 if (nlistf != NULL || memf != NULL) 233 setgid(getgid()); 234 235 if ((kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, buf)) == NULL) 236 errx(1, "%s", buf); 237 #ifdef notdef 238 if (kvm_nlist(kd, nl) != 0) 239 errx(1, "no namelist: %s", kvm_geterr(kd)); 240 #endif 241 if ((p = kvm_getprocs(kd, what, arg, &cnt)) == NULL) 242 errx(1, "%s", kvm_geterr(kd)); 243 if (nflg) 244 printf("USER %-*.*s %*.*s FD DEV %*.*s MODE SZ|DV R/W", 245 wflg_cmd, wflg_cmd, "CMD", 246 pid_width, pid_width, "PID", 247 ino_width, ino_width, "INUM"); 248 else 249 printf("USER %-*.*s %*.*s FD %-*.*s %*.*s MODE SZ|DV R/W", 250 wflg_cmd, wflg_cmd, "CMD", 251 pid_width, pid_width, "PID", 252 wflg_mnt, wflg_mnt, "PATH", 253 ino_width, ino_width, "INUM"); 254 if (checkfile && fsflg == 0) 255 printf(" NAME\n"); 256 else 257 putchar('\n'); 258 259 for (plast = &p[cnt]; p < plast; ++p) { 260 if (p->kp_stat == SZOMB) 261 continue; 262 if (!kread((void *)p->kp_paddr, &proc, sizeof(proc))) { 263 dprintf(stderr, "can't read proc at %p for pid %d\n", 264 (void *)p->kp_paddr, Pid); 265 continue; 266 } 267 dofiles(p, &proc); 268 if (mflg) 269 dommap(&proc); 270 } 271 exit(0); 272 } 273 274 #define PREFIX(i) \ 275 printf("%-8.8s %-*s %*d", Uname, wflg_cmd, Comm, pid_width, Pid); \ 276 switch(i) { \ 277 case TEXT: \ 278 printf(" text"); \ 279 break; \ 280 case CDIR: \ 281 printf(" wd"); \ 282 break; \ 283 case RDIR: \ 284 printf(" root"); \ 285 break; \ 286 case TRACE: \ 287 printf(" tr"); \ 288 break; \ 289 case MMAP: \ 290 printf(" mmap"); \ 291 break; \ 292 default: \ 293 printf(" %4d", i); \ 294 break; \ 295 } 296 297 /* 298 * print open files attributed to this process 299 */ 300 static void 301 dofiles(struct kinfo_proc *kp, struct proc *p) 302 { 303 int i; 304 struct file file; 305 struct filedesc filed; 306 struct ktrace_node ktrace_node; 307 308 Uname = user_from_uid(kp->kp_uid, 0); 309 Pid = kp->kp_pid; 310 Comm = kp->kp_comm; 311 make_printable(Comm, strlen(Comm)); 312 313 if (p->p_fd == NULL) 314 return; 315 if (!kread(p->p_fd, &filed, sizeof (filed))) { 316 dprintf(stderr, "can't read filedesc at %p for pid %d\n", 317 (void *)p->p_fd, Pid); 318 return; 319 } 320 /* 321 * root directory vnode, if one 322 */ 323 if (filed.fd_rdir) 324 vtrans(filed.fd_rdir, &filed.fd_nrdir, RDIR, FREAD, 0); 325 /* 326 * current working directory vnode 327 */ 328 vtrans(filed.fd_cdir, &filed.fd_ncdir, CDIR, FREAD, 0); 329 /* 330 * ktrace vnode, if one 331 */ 332 if (p->p_tracenode) { 333 if (kread(p->p_tracenode, &ktrace_node, sizeof (ktrace_node))) 334 vtrans(ktrace_node.kn_vp, NULL, TRACE, FREAD|FWRITE, 0); 335 } 336 /* 337 * text vnode, if one 338 */ 339 if (p->p_textvp) 340 vtrans(p->p_textvp, NULL, TEXT, FREAD, 0); 341 /* 342 * open files 343 */ 344 ALLOC_OFILES(filed.fd_lastfile+1); 345 if (!kread(filed.fd_files, ofiles, 346 (filed.fd_lastfile+1) * sizeof(struct fdnode))) { 347 dprintf(stderr, 348 "can't read file structures at %p for pid %d\n", 349 (void *)filed.fd_files, Pid); 350 return; 351 } 352 for (i = 0; i <= filed.fd_lastfile; i++) { 353 if (ofiles[i].fp == NULL) 354 continue; 355 if (!kread(ofiles[i].fp, &file, sizeof (struct file))) { 356 dprintf(stderr, "can't read file %d at %p for pid %d\n", 357 i, (void *)ofiles[i].fp, Pid); 358 continue; 359 } 360 if (file.f_type == DTYPE_VNODE) { 361 vtrans((struct vnode *)file.f_data, &file.f_nchandle, 362 i, file.f_flag, file.f_offset); 363 } else if (file.f_type == DTYPE_SOCKET) { 364 if (checkfile == 0) 365 socktrans((struct socket *)file.f_data, i); 366 } 367 #ifdef DTYPE_PIPE 368 else if (file.f_type == DTYPE_PIPE) { 369 if (checkfile == 0) 370 pipetrans((struct pipe *)file.f_data, i, 371 file.f_flag); 372 } 373 #endif 374 #ifdef DTYPE_FIFO 375 else if (file.f_type == DTYPE_FIFO) { 376 if (checkfile == 0) 377 vtrans((struct vnode *)file.f_data, 378 &file.f_nchandle, 379 i, file.f_flag, file.f_offset); 380 } 381 #endif 382 else { 383 dprintf(stderr, 384 "unknown file type %d for file %d of pid %d\n", 385 file.f_type, i, Pid); 386 } 387 } 388 } 389 390 static void 391 dommap(struct proc *p) 392 { 393 struct vmspace vmspace; 394 vm_map_t map; 395 struct vm_map_entry entry; 396 vm_map_entry_t ken; 397 struct vm_object object; 398 vm_object_t objp; 399 int prot, fflags; 400 401 if (!kread(p->p_vmspace, &vmspace, sizeof(vmspace))) { 402 dprintf(stderr, "can't read vmspace at %p for pid %d\n", 403 (void *)p->p_vmspace, Pid); 404 return; 405 } 406 407 map = &vmspace.vm_map; 408 for (ken = kvm_vm_map_entry_first(kd, map, &entry); 409 ken; ken = kvm_vm_map_entry_next(kd, ken, &entry)) { 410 if (entry.maptype == VM_MAPTYPE_SUBMAP) 411 continue; 412 413 if ((objp = entry.object.vm_object) == NULL) 414 continue; 415 416 for (; objp; objp = object.backing_object) { 417 if (!kread(objp, &object, sizeof(object))) { 418 dprintf(stderr, 419 "can't read vm_object at %p for pid %d\n", 420 (void *)objp, Pid); 421 return; 422 } 423 } 424 425 prot = entry.protection; 426 fflags = (prot & VM_PROT_READ ? FREAD : 0) | 427 (prot & VM_PROT_WRITE ? FWRITE : 0); 428 429 switch (object.type) { 430 case OBJT_VNODE: 431 vtrans((struct vnode *)object.handle, NULL, 432 MMAP, fflags, 0); 433 break; 434 default: 435 break; 436 } 437 } 438 } 439 440 static void 441 vtrans(struct vnode *vp, struct nchandle *ncr, int i, int flag, off_t off) 442 { 443 struct vnode vn; 444 struct filestat fst; 445 char rw[3], mode[15]; 446 const char *badtype = NULL, *filename; 447 char *name; 448 449 fst.offset = off; 450 filename = badtype = NULL; 451 if (!kread(vp, &vn, sizeof (struct vnode))) { 452 dprintf(stderr, "can't read vnode at %p for pid %d\n", 453 (void *)vp, Pid); 454 return; 455 } 456 if (vn.v_type == VNON || vn.v_tag == VT_NON) 457 badtype = "none"; 458 else if (vn.v_type == VBAD) 459 badtype = "bad"; 460 else 461 switch (vn.v_tag) { 462 case VT_HAMMER: 463 if (!hammer_filestat(&vn, &fst)) 464 badtype = "error"; 465 break; 466 case VT_HAMMER2: 467 if (!hammer2_filestat(&vn, &fst)) 468 badtype = "error"; 469 break; 470 case VT_TMPFS: 471 if (!tmpfs_filestat(&vn, &fst)) 472 badtype = "error"; 473 break; 474 case VT_UFS: 475 if (!ufs_filestat(&vn, &fst)) 476 badtype = "error"; 477 break; 478 case VT_MFS: 479 if (!ufs_filestat(&vn, &fst)) 480 badtype = "error"; 481 break; 482 case VT_NFS: 483 if (!nfs_filestat(&vn, &fst)) 484 badtype = "error"; 485 break; 486 case VT_NTFS: 487 if (!ntfs_filestat(&vn, &fst)) 488 badtype = "error"; 489 break; 490 case VT_EXT2FS: 491 if (!ext2fs_filestat(&vn, &fst)) 492 badtype = "error"; 493 break; 494 495 case VT_MSDOSFS: 496 if (!msdosfs_filestat(&vn, &fst)) 497 badtype = "error"; 498 break; 499 500 case VT_ISOFS: 501 if (!isofs_filestat(&vn, &fst)) 502 badtype = "error"; 503 break; 504 505 case VT_DEVFS: 506 if (!devfs_filestat(&vn, &fst)) 507 badtype = "error"; 508 break; 509 510 default: { 511 static char unknown[10]; 512 sprintf(unknown, "?(%x)", vn.v_tag); 513 badtype=unknown; 514 break; 515 } 516 } 517 if (checkfile) { 518 int fsmatch = 0; 519 DEVS *d; 520 521 if (badtype) 522 return; 523 for (d = devs; d != NULL; d = d->next) 524 if (d->fsid == fst.fsid) { 525 fsmatch = 1; 526 if (d->ino == (ino_t)fst.fileid) { 527 filename = d->name; 528 break; 529 } 530 } 531 if (fsmatch == 0 || (filename == NULL && fsflg == 0)) 532 return; 533 } 534 PREFIX(i); 535 if (badtype) { 536 (void)printf(" %-*s %10s %jd\n", 537 wflg_mnt, 538 getmnton(vn.v_mount, &vn.v_namecache, ncr), 539 badtype, 540 (intmax_t)off); 541 return; 542 } 543 if (nflg) 544 printf(" %3u,%-9u ", 545 major(fst.fsid), minor(fst.fsid)); 546 else 547 printf(" %-*s", 548 wflg_mnt, getmnton(vn.v_mount, &vn.v_namecache, ncr)); 549 if (nflg) 550 sprintf(mode, "%o", fst.mode); 551 else 552 strmode(fst.mode, mode); 553 554 printf(" %*ld %10s", ino_width, fst.fileid, mode); 555 556 switch (vn.v_type) { 557 case VBLK: 558 case VCHR: 559 if (nflg || ((name = devname(fst.rdev, vn.v_type == VCHR ? 560 S_IFCHR : S_IFBLK)) == NULL)) 561 printf(" %3u,%-4u", major(fst.rdev), minor(fst.rdev)); 562 else 563 printf(" %8s", name); 564 break; 565 case VREG: 566 printf(" %jd", (intmax_t)fst.offset); 567 break; 568 default: 569 printf(" %8ju", (uintmax_t)fst.size); 570 } 571 rw[0] = '\0'; 572 if (flag & FREAD) 573 strcat(rw, "r"); 574 if (flag & FWRITE) 575 strcat(rw, "w"); 576 printf(" %2s", rw); 577 if (filename && !fsflg) 578 printf(" %s", filename); 579 putchar('\n'); 580 } 581 582 static int 583 ufs_filestat(struct vnode *vp, struct filestat *fsp) 584 { 585 struct inode inode; 586 587 if (!kread(VTOI(vp), &inode, sizeof (inode))) { 588 dprintf(stderr, "can't read inode at %p for pid %d\n", 589 (void *)VTOI(vp), Pid); 590 return 0; 591 } 592 /* 593 * The st_dev from stat(2) is a udev_t. These kernel structures 594 * contain dev_t structures. We need to convert to udev to make 595 * comparisons 596 */ 597 fsp->fsid = fstat_dev2udev(inode.i_dev); 598 fsp->fileid = (long)inode.i_number; 599 fsp->mode = (mode_t)inode.i_mode; 600 fsp->size = inode.i_size; 601 fsp->rdev = inode.i_rdev; 602 603 return 1; 604 } 605 606 static int 607 nfs_filestat(struct vnode *vp, struct filestat *fsp) 608 { 609 struct nfsnode nfsnode; 610 611 if (!kread(VTONFS(vp), &nfsnode, sizeof (nfsnode))) { 612 dprintf(stderr, "can't read nfsnode at %p for pid %d\n", 613 (void *)VTONFS(vp), Pid); 614 return 0; 615 } 616 fsp->fsid = nfsnode.n_vattr.va_fsid; 617 fsp->fileid = nfsnode.n_vattr.va_fileid; 618 fsp->size = nfsnode.n_size; 619 fsp->rdev = makeudev(nfsnode.n_vattr.va_rmajor, 620 nfsnode.n_vattr.va_rminor); 621 fsp->mode = nfsnode.n_vattr.va_mode | mtrans(vp->v_type); 622 623 return 1; 624 } 625 626 static int 627 devfs_filestat(struct vnode *vp, struct filestat *fsp) 628 { 629 struct devfs_node devfs_node; 630 631 if (!kread(vp->v_data, &devfs_node, sizeof (devfs_node))) { 632 dprintf(stderr, "can't read devfs_node at %p for pid %d\n", 633 (void *)vp->v_data, Pid); 634 return 0; 635 } 636 fsp->fsid = fsp->rdev = fstat_dev2udev(vp->v_rdev); 637 fsp->fileid = devfs_node.d_dir.d_ino; 638 fsp->mode = (devfs_node.mode & ~S_IFMT) | S_IFCHR; 639 fsp->size = 0; 640 641 return 1; 642 } 643 644 static char * 645 getmnton(struct mount *m, struct namecache_list *ncplist, struct nchandle *ncr) 646 { 647 static struct mount mount_l; 648 static struct mtab { 649 struct mtab *next; 650 struct mount *m; 651 char mntonname[MNAMELEN]; 652 } *mhead = NULL; 653 struct mtab *mt; 654 struct namecache *ncp; 655 struct namecache ncp_copy; 656 static char path[1024]; 657 int i; 658 659 /* 660 * If no ncp is passed try to find one via ncplist. Make sure 661 * we are using the correct mount pointer or the matching code 662 * will not know how to transition mount points properly. 663 */ 664 if (ncr == NULL || ncr->ncp == NULL) { 665 ncp = ncplist->tqh_first; 666 } else { 667 ncp = ncr->ncp; 668 if (ncr->mount) 669 m = ncr->mount; 670 } 671 672 /* 673 * If we have an ncp, traceback the path. This is a kvm pointer. 674 */ 675 if (ncp) { 676 if (!kread(m, &mount_l, sizeof(struct mount))) { 677 warnx("can't read mount table at %p", (void *)m); 678 return (NULL); 679 } 680 i = sizeof(path) - 1; 681 path[i] = 0; 682 while (ncp) { 683 /* 684 * If this is the root of the mount then traverse 685 * to the parent mount. 686 */ 687 if (ncp == mount_l.mnt_ncmountpt.ncp) { 688 ncp = mount_l.mnt_ncmounton.ncp; 689 if (ncp == NULL) 690 break; 691 m = mount_l.mnt_ncmounton.mount; 692 if (!kread(m, &mount_l, sizeof(struct mount))) { 693 warnx("can't read mount table at %p", (void *)m); 694 return (NULL); 695 } 696 } 697 698 /* 699 * Ok, pull out the ncp and extract the name 700 */ 701 if (!kread(ncp, &ncp_copy, sizeof(ncp_copy))) { 702 warnx("can't read ncp at %p", ncp); 703 return (NULL); 704 } 705 if (i <= ncp_copy.nc_nlen) 706 break; 707 i -= ncp_copy.nc_nlen; 708 if (!kread(ncp_copy.nc_name, path + i, ncp_copy.nc_nlen)) { 709 warnx("can't read ncp %p path component at %p", ncp, ncp_copy.nc_name); 710 return (NULL); 711 } 712 make_printable(path + i, ncp_copy.nc_nlen); 713 path[--i] = '/'; 714 ncp = ncp_copy.nc_parent; 715 } 716 if (i == sizeof(path) - 1) 717 path[--i] = '/'; 718 return(path + i); 719 } 720 721 /* 722 * If all else fails print out the mount point path 723 */ 724 for (mt = mhead; mt != NULL; mt = mt->next) { 725 if (m == mt->m) 726 return (mt->mntonname); 727 } 728 if (!kread(m, &mount_l, sizeof(struct mount))) { 729 warnx("can't read mount table at %p", (void *)m); 730 return (NULL); 731 } 732 if ((mt = malloc(sizeof (struct mtab))) == NULL) 733 err(1, NULL); 734 mt->m = m; 735 bcopy(&mount_l.mnt_stat.f_mntonname[0], &mt->mntonname[0], MNAMELEN); 736 mt->next = mhead; 737 mhead = mt; 738 return (mt->mntonname); 739 } 740 741 static void 742 pipetrans(struct pipe *pi, int i, int flag) 743 { 744 struct pipe pip; 745 struct pipebuf *b1; 746 struct pipebuf *b2; 747 char rw[3]; 748 char side1; 749 char side2; 750 751 PREFIX(i); 752 if ((intptr_t)pi & 1) { 753 side1 = 'B'; 754 side2 = 'A'; 755 b1 = &pip.bufferB; 756 b2 = &pip.bufferA; 757 } else { 758 side1 = 'A'; 759 side2 = 'B'; 760 b1 = &pip.bufferA; 761 b2 = &pip.bufferB; 762 } 763 pi = (void *)((intptr_t)pi & ~(intptr_t)1); 764 765 /* fill in socket */ 766 if (!kread(pi, &pip, sizeof(struct pipe))) { 767 dprintf(stderr, "can't read pipe at %p\n", (void *)pi); 768 goto bad; 769 } 770 771 printf("* pipe %8lx (%c<->%c)", (u_long)pi, side1, side2); 772 printf(" ravail %-zd wavail %-zd", 773 b1->windex - b1->rindex, 774 b2->windex - b2->rindex); 775 rw[0] = '\0'; 776 if (flag & FREAD) 777 strcat(rw, "r"); 778 if (flag & FWRITE) 779 strcat(rw, "w"); 780 printf(" %2s", rw); 781 putchar('\n'); 782 return; 783 784 bad: 785 printf("* error\n"); 786 } 787 788 static void 789 socktrans(struct socket *sock, int i) 790 { 791 static const char *stypename[] = { 792 "unused", /* 0 */ 793 "stream", /* 1 */ 794 "dgram", /* 2 */ 795 "raw", /* 3 */ 796 "rdm", /* 4 */ 797 "seqpak" /* 5 */ 798 }; 799 #define STYPEMAX 5 800 struct socket so; 801 struct protosw proto; 802 struct domain dom; 803 struct inpcb inpcb; 804 struct unpcb unpcb; 805 int len; 806 char dname[32]; 807 808 PREFIX(i); 809 810 /* fill in socket */ 811 if (!kread(sock, &so, sizeof(struct socket))) { 812 dprintf(stderr, "can't read sock at %p\n", (void *)sock); 813 goto bad; 814 } 815 816 /* fill in protosw entry */ 817 if (!kread(so.so_proto, &proto, sizeof(struct protosw))) { 818 dprintf(stderr, "can't read protosw at %p", 819 (void *)so.so_proto); 820 goto bad; 821 } 822 823 /* fill in domain */ 824 if (!kread(proto.pr_domain, &dom, sizeof(struct domain))) { 825 dprintf(stderr, "can't read domain at %p\n", 826 (const void *)proto.pr_domain); 827 goto bad; 828 } 829 830 if ((len = kvm_read(kd, (u_long)dom.dom_name, dname, 831 sizeof(dname) - 1)) < 0) { 832 dprintf(stderr, "can't read domain name at %p\n", 833 (void *)dom.dom_name); 834 dname[0] = '\0'; 835 } 836 else 837 dname[len] = '\0'; 838 839 if ((u_short)so.so_type > STYPEMAX) 840 printf("* %s ?%d", dname, so.so_type); 841 else 842 printf("* %s %s", dname, stypename[so.so_type]); 843 844 /* 845 * protocol specific formatting 846 * 847 * Try to find interesting things to print. For tcp, the interesting 848 * thing is the address of the tcpcb, for udp and others, just the 849 * inpcb (socket pcb). For unix domain, its the address of the socket 850 * pcb and the address of the connected pcb (if connected). Otherwise 851 * just print the protocol number and address of the socket itself. 852 * The idea is not to duplicate netstat, but to make available enough 853 * information for further analysis. 854 */ 855 switch(dom.dom_family) { 856 case AF_INET: 857 case AF_INET6: 858 getinetproto(proto.pr_protocol); 859 if (proto.pr_protocol == IPPROTO_TCP ) { 860 if (so.so_pcb) { 861 if (kvm_read(kd, (u_long)so.so_pcb, 862 (char *)&inpcb, sizeof(struct inpcb)) 863 != sizeof(struct inpcb)) { 864 dprintf(stderr, 865 "can't read inpcb at %p\n", 866 (void *)so.so_pcb); 867 goto bad; 868 } 869 printf(" %lx", (u_long)inpcb.inp_ppcb); 870 } 871 } 872 else if (so.so_pcb) 873 printf(" %lx", (u_long)so.so_pcb); 874 break; 875 case AF_UNIX: 876 /* print address of pcb and connected pcb */ 877 if (so.so_pcb) { 878 printf(" %lx", (u_long)so.so_pcb); 879 if (kvm_read(kd, (u_long)so.so_pcb, (char *)&unpcb, 880 sizeof(struct unpcb)) != sizeof(struct unpcb)){ 881 dprintf(stderr, "can't read unpcb at %p\n", 882 (void *)so.so_pcb); 883 goto bad; 884 } 885 if (unpcb.unp_conn) { 886 char shoconn[4], *cp; 887 888 cp = shoconn; 889 if (!(so.so_state & SS_CANTRCVMORE)) 890 *cp++ = '<'; 891 *cp++ = '-'; 892 if (!(so.so_state & SS_CANTSENDMORE)) 893 *cp++ = '>'; 894 *cp = '\0'; 895 printf(" %s %lx", shoconn, 896 (u_long)unpcb.unp_conn); 897 } 898 } 899 break; 900 default: 901 /* print protocol number and socket address */ 902 printf(" %d %lx", proto.pr_protocol, (u_long)sock); 903 } 904 printf("\n"); 905 return; 906 bad: 907 printf("* error\n"); 908 } 909 910 911 /* 912 * Read the cdev structure in the kernel (as pointed to by a dev_t) 913 * in order to work out the associated udev_t 914 */ 915 udev_t 916 fstat_dev2udev(void *dev) 917 { 918 struct cdev si; 919 920 if (kread(dev, &si, sizeof si)) { 921 if ((si.si_umajor & 0xffffff00) || 922 (si.si_uminor & 0x0000ff00)) { 923 return NOUDEV; 924 } 925 return((si.si_umajor << 8) | si.si_uminor); 926 } else { 927 dprintf(stderr, "can't convert dev_t %p to a udev_t\n", dev); 928 return NOUDEV; 929 } 930 } 931 932 udev_t 933 makeudev(int x, int y) 934 { 935 if ((x & 0xffffff00) || (y & 0x0000ff00)) 936 return NOUDEV; 937 return ((x << 8) | y); 938 } 939 940 /* 941 * getinetproto -- 942 * print name of protocol number 943 */ 944 static void 945 getinetproto(int number) 946 { 947 static int isopen; 948 struct protoent *pe; 949 950 if (!isopen) 951 setprotoent(++isopen); 952 if ((pe = getprotobynumber(number)) != NULL) 953 printf(" %s", pe->p_name); 954 else 955 printf(" %d", number); 956 } 957 958 static int 959 getfname(const char *filename) 960 { 961 struct stat statbuf; 962 DEVS *cur; 963 964 if (stat(filename, &statbuf)) { 965 warn("%s", filename); 966 return(0); 967 } 968 if ((cur = malloc(sizeof(DEVS))) == NULL) 969 err(1, NULL); 970 cur->next = devs; 971 devs = cur; 972 973 cur->ino = statbuf.st_ino; 974 cur->fsid = statbuf.st_dev; 975 cur->name = filename; 976 return(1); 977 } 978 979 static void 980 usage(void) 981 { 982 (void)fprintf(stderr, 983 "usage: fstat [-fmnv] [-p pid] [-u user] [-N system] [-M core] [file ...]\n"); 984 exit(1); 985 } 986 987 static 988 void 989 make_printable(char *buf, int len) 990 { 991 while (len > 0) { 992 if (!isprint(*buf)) 993 *buf = '?'; 994 ++buf; 995 --len; 996 } 997 } 998 999 ssize_t 1000 kread(const void *kaddr, void *uaddr, size_t nbytes) 1001 { 1002 if (nbytes > 0x10000000) 1003 return(0); 1004 1005 if (kvm_read(kd, (u_long)kaddr, (char *)uaddr, nbytes) == (ssize_t)nbytes) 1006 return(1); 1007 else 1008 return(0); 1009 } 1010