fstat.c revision 181905
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 34#ifndef lint 35static const char copyright[] = 36"@(#) Copyright (c) 1988, 1993\n\ 37 The Regents of the University of California. All rights reserved.\n"; 38#endif /* not lint */ 39 40#ifndef lint 41#if 0 42static char sccsid[] = "@(#)fstat.c 8.3 (Berkeley) 5/2/95"; 43#endif 44#endif /* not lint */ 45#include <sys/cdefs.h> 46__FBSDID("$FreeBSD: head/usr.bin/fstat/fstat.c 181905 2008-08-20 08:31:58Z ed $"); 47 48#include <sys/param.h> 49#include <sys/time.h> 50#include <sys/proc.h> 51#include <sys/user.h> 52#include <sys/stat.h> 53#include <sys/vnode.h> 54#include <sys/socket.h> 55#include <sys/socketvar.h> 56#include <sys/domain.h> 57#include <sys/protosw.h> 58#include <sys/un.h> 59#include <sys/unpcb.h> 60#include <sys/sysctl.h> 61#include <sys/tty.h> 62#include <sys/filedesc.h> 63#include <sys/queue.h> 64#define _WANT_FILE 65#include <sys/file.h> 66#include <sys/conf.h> 67#define _KERNEL 68#include <sys/pipe.h> 69#include <sys/mount.h> 70#include <ufs/ufs/quota.h> 71#include <ufs/ufs/inode.h> 72#include <fs/devfs/devfs.h> 73#include <fs/devfs/devfs_int.h> 74#undef _KERNEL 75#include <nfs/nfsproto.h> 76#include <nfs/rpcv2.h> 77#include <nfsclient/nfs.h> 78#include <nfsclient/nfsnode.h> 79 80 81#include <vm/vm.h> 82#include <vm/vm_map.h> 83#include <vm/vm_object.h> 84 85#include <net/route.h> 86#include <netinet/in.h> 87#include <netinet/in_systm.h> 88#include <netinet/ip.h> 89#include <netinet/in_pcb.h> 90 91#include <ctype.h> 92#include <err.h> 93#include <fcntl.h> 94#include <kvm.h> 95#include <limits.h> 96#include <nlist.h> 97#include <paths.h> 98#include <pwd.h> 99#include <stdio.h> 100#include <stdlib.h> 101#include <stddef.h> 102#include <string.h> 103#include <unistd.h> 104#include <netdb.h> 105 106#include "fstat.h" 107 108#define TEXT -1 109#define CDIR -2 110#define RDIR -3 111#define TRACE -4 112#define MMAP -5 113#define JDIR -6 114 115DEVS *devs; 116 117#ifdef notdef 118struct nlist nl[] = { 119 { "" }, 120}; 121#endif 122 123int fsflg, /* show files on same filesystem as file(s) argument */ 124 pflg, /* show files open by a particular pid */ 125 uflg; /* show files open by a particular (effective) user */ 126int checkfile; /* true if restricting to particular files or filesystems */ 127int nflg; /* (numerical) display f.s. and rdev as dev_t */ 128int vflg; /* display errors in locating kernel data objects etc... */ 129int mflg; /* include memory-mapped files */ 130 131 132struct file **ofiles; /* buffer of pointers to file structures */ 133int 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, NULL); \ 140 } \ 141 maxfiles = (d); \ 142 } 143 144char *memf, *nlistf; 145kvm_t *kd; 146 147static void fstat_kvm(int, int); 148static void fstat_sysctl(int, int); 149void dofiles(struct kinfo_proc *kp); 150void dommap(struct kinfo_proc *kp); 151void vtrans(struct vnode *vp, int i, int flag); 152int ufs_filestat(struct vnode *vp, struct filestat *fsp); 153int nfs_filestat(struct vnode *vp, struct filestat *fsp); 154int devfs_filestat(struct vnode *vp, struct filestat *fsp); 155char *getmnton(struct mount *m); 156void pipetrans(struct pipe *pi, int i, int flag); 157void socktrans(struct socket *sock, int i); 158void ptstrans(struct tty *tp, int i, int flag); 159void getinetproto(int number); 160int getfname(const char *filename); 161void usage(void); 162char *kdevtoname(struct cdev *dev); 163 164int 165main(int argc, char **argv) 166{ 167 struct passwd *passwd; 168 int arg, ch, what; 169 170 arg = 0; 171 what = KERN_PROC_PROC; 172 nlistf = memf = NULL; 173 while ((ch = getopt(argc, argv, "fmnp:u:vN:M:")) != -1) 174 switch((char)ch) { 175 case 'f': 176 fsflg = 1; 177 break; 178 case 'M': 179 memf = optarg; 180 break; 181 case 'N': 182 nlistf = optarg; 183 break; 184 case 'm': 185 mflg = 1; 186 break; 187 case 'n': 188 nflg = 1; 189 break; 190 case 'p': 191 if (pflg++) 192 usage(); 193 if (!isdigit(*optarg)) { 194 warnx("-p requires a process id"); 195 usage(); 196 } 197 what = KERN_PROC_PID; 198 arg = atoi(optarg); 199 break; 200 case 'u': 201 if (uflg++) 202 usage(); 203 if (!(passwd = getpwnam(optarg))) 204 errx(1, "%s: unknown uid", optarg); 205 what = KERN_PROC_UID; 206 arg = passwd->pw_uid; 207 break; 208 case 'v': 209 vflg = 1; 210 break; 211 case '?': 212 default: 213 usage(); 214 } 215 216 if (*(argv += optind)) { 217 for (; *argv; ++argv) { 218 if (getfname(*argv)) 219 checkfile = 1; 220 } 221 if (!checkfile) /* file(s) specified, but none accessable */ 222 exit(1); 223 } 224 225 if (fsflg && !checkfile) { 226 /* -f with no files means use wd */ 227 if (getfname(".") == 0) 228 exit(1); 229 checkfile = 1; 230 } 231 232 if (memf != NULL) 233 fstat_kvm(what, arg); 234 else 235 fstat_sysctl(what, arg); 236 exit(0); 237} 238 239static void 240print_header(void) 241{ 242 243 if (nflg) 244 printf("%s", 245"USER CMD PID FD DEV INUM MODE SZ|DV R/W"); 246 else 247 printf("%s", 248"USER CMD PID FD MOUNT INUM MODE SZ|DV R/W"); 249 if (checkfile && fsflg == 0) 250 printf(" NAME\n"); 251 else 252 putchar('\n'); 253} 254 255static void 256fstat_kvm(int what, int arg) 257{ 258 struct kinfo_proc *p, *plast; 259 char buf[_POSIX2_LINE_MAX]; 260 int cnt; 261 262 ALLOC_OFILES(256); /* reserve space for file pointers */ 263 264 /* 265 * Discard setgid privileges if not the running kernel so that bad 266 * guys can't print interesting stuff from kernel memory. 267 */ 268 if (nlistf != NULL || memf != NULL) 269 setgid(getgid()); 270 271 if ((kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, buf)) == NULL) 272 errx(1, "%s", buf); 273 setgid(getgid()); 274#ifdef notdef 275 if (kvm_nlist(kd, nl) != 0) 276 errx(1, "no namelist: %s", kvm_geterr(kd)); 277#endif 278 if ((p = kvm_getprocs(kd, what, arg, &cnt)) == NULL) 279 errx(1, "%s", kvm_geterr(kd)); 280 print_header(); 281 for (plast = &p[cnt]; p < plast; ++p) { 282 if (p->ki_stat == SZOMB) 283 continue; 284 dofiles(p); 285 if (mflg) 286 dommap(p); 287 } 288} 289 290static void 291fstat_sysctl(int what, int arg) 292{ 293 294 /* not yet implemented */ 295 fstat_kvm(what, arg); 296} 297 298const char *Uname, *Comm; 299int Pid; 300 301#define PREFIX(i) printf("%-8.8s %-10s %5d", Uname, Comm, Pid); \ 302 switch(i) { \ 303 case TEXT: \ 304 printf(" text"); \ 305 break; \ 306 case CDIR: \ 307 printf(" wd"); \ 308 break; \ 309 case RDIR: \ 310 printf(" root"); \ 311 break; \ 312 case TRACE: \ 313 printf(" tr"); \ 314 break; \ 315 case MMAP: \ 316 printf(" mmap"); \ 317 break; \ 318 case JDIR: \ 319 printf(" jail"); \ 320 break; \ 321 default: \ 322 printf(" %4d", i); \ 323 break; \ 324 } 325 326/* 327 * print open files attributed to this process 328 */ 329void 330dofiles(struct kinfo_proc *kp) 331{ 332 int i; 333 struct file file; 334 struct filedesc filed; 335 336 Uname = user_from_uid(kp->ki_uid, 0); 337 Pid = kp->ki_pid; 338 Comm = kp->ki_comm; 339 340 if (kp->ki_fd == NULL) 341 return; 342 if (!KVM_READ(kp->ki_fd, &filed, sizeof (filed))) { 343 dprintf(stderr, "can't read filedesc at %p for pid %d\n", 344 (void *)kp->ki_fd, Pid); 345 return; 346 } 347 /* 348 * root directory vnode, if one 349 */ 350 if (filed.fd_rdir) 351 vtrans(filed.fd_rdir, RDIR, FREAD); 352 /* 353 * current working directory vnode 354 */ 355 if (filed.fd_cdir) 356 vtrans(filed.fd_cdir, CDIR, FREAD); 357 /* 358 * jail root, if any. 359 */ 360 if (filed.fd_jdir) 361 vtrans(filed.fd_jdir, JDIR, FREAD); 362 /* 363 * ktrace vnode, if one 364 */ 365 if (kp->ki_tracep) 366 vtrans(kp->ki_tracep, TRACE, FREAD|FWRITE); 367 /* 368 * text vnode, if one 369 */ 370 if (kp->ki_textvp) 371 vtrans(kp->ki_textvp, TEXT, FREAD); 372 /* 373 * open files 374 */ 375#define FPSIZE (sizeof (struct file *)) 376#define MAX_LASTFILE (0x1000000) 377 378 /* Sanity check on filed.fd_lastfile */ 379 if (filed.fd_lastfile <= -1 || filed.fd_lastfile > MAX_LASTFILE) 380 return; 381 382 ALLOC_OFILES(filed.fd_lastfile+1); 383 if (!KVM_READ(filed.fd_ofiles, ofiles, 384 (filed.fd_lastfile+1) * FPSIZE)) { 385 dprintf(stderr, 386 "can't read file structures at %p for pid %d\n", 387 (void *)filed.fd_ofiles, Pid); 388 return; 389 } 390 for (i = 0; i <= filed.fd_lastfile; i++) { 391 if (ofiles[i] == NULL) 392 continue; 393 if (!KVM_READ(ofiles[i], &file, sizeof (struct file))) { 394 dprintf(stderr, "can't read file %d at %p for pid %d\n", 395 i, (void *)ofiles[i], Pid); 396 continue; 397 } 398 if (file.f_type == DTYPE_VNODE) 399 vtrans(file.f_vnode, i, file.f_flag); 400 else if (file.f_type == DTYPE_SOCKET) { 401 if (checkfile == 0) 402 socktrans(file.f_data, i); 403 } 404#ifdef DTYPE_PIPE 405 else if (file.f_type == DTYPE_PIPE) { 406 if (checkfile == 0) 407 pipetrans(file.f_data, i, file.f_flag); 408 } 409#endif 410#ifdef DTYPE_FIFO 411 else if (file.f_type == DTYPE_FIFO) { 412 if (checkfile == 0) 413 vtrans(file.f_vnode, i, file.f_flag); 414 } 415#endif 416#ifdef DTYPE_PTS 417 else if (file.f_type == DTYPE_PTS) { 418 if (checkfile == 0) 419 ptstrans(file.f_data, i, file.f_flag); 420 } 421#endif 422 else { 423 dprintf(stderr, 424 "unknown file type %d for file %d of pid %d\n", 425 file.f_type, i, Pid); 426 } 427 } 428} 429 430void 431dommap(struct kinfo_proc *kp) 432{ 433 vm_map_t map; 434 struct vmspace vmspace; 435 struct vm_map_entry entry; 436 vm_map_entry_t entryp; 437 struct vm_object object; 438 vm_object_t objp; 439 int prot, fflags; 440 441 if (!KVM_READ(kp->ki_vmspace, &vmspace, sizeof(vmspace))) { 442 dprintf(stderr, 443 "can't read vmspace at %p for pid %d\n", 444 (void *)kp->ki_vmspace, Pid); 445 return; 446 } 447 map = &vmspace.vm_map; 448 449 for (entryp = map->header.next; 450 entryp != &kp->ki_vmspace->vm_map.header; entryp = entry.next) { 451 if (!KVM_READ(entryp, &entry, sizeof(entry))) { 452 dprintf(stderr, 453 "can't read vm_map_entry at %p for pid %d\n", 454 (void *)entryp, Pid); 455 return; 456 } 457 458 if (entry.eflags & MAP_ENTRY_IS_SUB_MAP) 459 continue; 460 461 if ((objp = entry.object.vm_object) == NULL) 462 continue; 463 464 for (; objp; objp = object.backing_object) { 465 if (!KVM_READ(objp, &object, sizeof(object))) { 466 dprintf(stderr, 467 "can't read vm_object at %p for pid %d\n", 468 (void *)objp, Pid); 469 return; 470 } 471 } 472 473 prot = entry.protection; 474 fflags = (prot & VM_PROT_READ ? FREAD : 0) | 475 (prot & VM_PROT_WRITE ? FWRITE : 0); 476 477 switch (object.type) { 478 case OBJT_VNODE: 479 vtrans((struct vnode *)object.handle, MMAP, fflags); 480 break; 481 default: 482 break; 483 } 484 } 485} 486 487char * 488kdevtoname(struct cdev *dev) 489{ 490 struct cdev si; 491 492 if (!KVM_READ(dev, &si, sizeof si)) 493 return (NULL); 494 return (strdup(si.__si_namebuf)); 495} 496 497void 498vtrans(struct vnode *vp, int i, int flag) 499{ 500 struct vnode vn; 501 struct filestat fst; 502 char rw[3], mode[15], tagstr[12], *tagptr; 503 const char *badtype, *filename; 504 505 filename = badtype = NULL; 506 if (!KVM_READ(vp, &vn, sizeof (struct vnode))) { 507 dprintf(stderr, "can't read vnode at %p for pid %d\n", 508 (void *)vp, Pid); 509 return; 510 } 511 if (!KVM_READ(&vp->v_tag, &tagptr, sizeof tagptr) || 512 !KVM_READ(tagptr, tagstr, sizeof tagstr)) { 513 dprintf(stderr, "can't read v_tag at %p for pid %d\n", 514 (void *)vp, Pid); 515 return; 516 } 517 tagstr[sizeof(tagstr) - 1] = '\0'; 518 if (vn.v_type == VNON) 519 badtype = "none"; 520 else if (vn.v_type == VBAD) 521 badtype = "bad"; 522 else { 523 if (!strcmp("ufs", tagstr)) { 524 if (!ufs_filestat(&vn, &fst)) 525 badtype = "error"; 526 } else if (!strcmp("devfs", tagstr)) { 527 if (!devfs_filestat(&vn, &fst)) 528 badtype = "error"; 529 } else if (!strcmp("nfs", tagstr)) { 530 if (!nfs_filestat(&vn, &fst)) 531 badtype = "error"; 532 } else if (!strcmp("msdosfs", tagstr)) { 533 if (!msdosfs_filestat(&vn, &fst)) 534 badtype = "error"; 535 } else if (!strcmp("isofs", tagstr)) { 536 if (!isofs_filestat(&vn, &fst)) 537 badtype = "error"; 538#ifdef ZFS 539 } else if (!strcmp("zfs", tagstr)) { 540 if (!zfs_filestat(&vn, &fst)) 541 badtype = "error"; 542#endif 543 } else { 544 static char unknown[32]; 545 snprintf(unknown, sizeof unknown, "?(%s)", tagstr); 546 badtype = unknown; 547 } 548 } 549 if (checkfile) { 550 int fsmatch = 0; 551 DEVS *d; 552 553 if (badtype) 554 return; 555 for (d = devs; d != NULL; d = d->next) 556 if (d->fsid == fst.fsid) { 557 fsmatch = 1; 558 if (d->ino == fst.fileid) { 559 filename = d->name; 560 break; 561 } 562 } 563 if (fsmatch == 0 || (filename == NULL && fsflg == 0)) 564 return; 565 } 566 PREFIX(i); 567 if (badtype) { 568 (void)printf(" - - %10s -\n", badtype); 569 return; 570 } 571 if (nflg) 572 (void)printf(" %2d,%-2d", major(fst.fsid), minor(fst.fsid)); 573 else 574 (void)printf(" %-8s", getmnton(vn.v_mount)); 575 if (nflg) 576 (void)sprintf(mode, "%o", fst.mode); 577 else 578 strmode(fst.mode, mode); 579 (void)printf(" %6ld %10s", fst.fileid, mode); 580 switch (vn.v_type) { 581 case VBLK: 582 case VCHR: { 583 char *name; 584 585 name = kdevtoname(vn.v_rdev); 586 if (nflg || !name) 587 printf(" %2d,%-2d", major(fst.rdev), minor(fst.rdev)); 588 else { 589 printf(" %6s", name); 590 free(name); 591 } 592 break; 593 } 594 default: 595 printf(" %6lu", fst.size); 596 } 597 rw[0] = '\0'; 598 if (flag & FREAD) 599 strcat(rw, "r"); 600 if (flag & FWRITE) 601 strcat(rw, "w"); 602 printf(" %2s", rw); 603 if (filename && !fsflg) 604 printf(" %s", filename); 605 putchar('\n'); 606} 607 608int 609ufs_filestat(struct vnode *vp, struct filestat *fsp) 610{ 611 struct inode inode; 612 613 if (!KVM_READ(VTOI(vp), &inode, sizeof (inode))) { 614 dprintf(stderr, "can't read inode at %p for pid %d\n", 615 (void *)VTOI(vp), Pid); 616 return 0; 617 } 618 /* 619 * The st_dev from stat(2) is a dev_t. These kernel structures 620 * contain cdev pointers. We need to convert to dev_t to make 621 * comparisons 622 */ 623 fsp->fsid = dev2udev(inode.i_dev); 624 fsp->fileid = (long)inode.i_number; 625 fsp->mode = (mode_t)inode.i_mode; 626 fsp->size = (u_long)inode.i_size; 627#if should_be_but_is_hard 628 /* XXX - need to load i_ump and i_din[12] from kernel memory */ 629 if (inode.i_ump->um_fstype == UFS1) 630 fsp->rdev = inode.i_din1->di_rdev; 631 else 632 fsp->rdev = inode.i_din2->di_rdev; 633#else 634 fsp->rdev = 0; 635#endif 636 637 return 1; 638} 639 640int 641devfs_filestat(struct vnode *vp, struct filestat *fsp) 642{ 643 struct devfs_dirent devfs_dirent; 644 struct mount mount; 645 struct vnode vnode; 646 647 if (!KVM_READ(vp->v_data, &devfs_dirent, sizeof (devfs_dirent))) { 648 dprintf(stderr, "can't read devfs_dirent at %p for pid %d\n", 649 (void *)vp->v_data, Pid); 650 return 0; 651 } 652 if (!KVM_READ(vp->v_mount, &mount, sizeof (mount))) { 653 dprintf(stderr, "can't read mount at %p for pid %d\n", 654 (void *)vp->v_mount, Pid); 655 return 0; 656 } 657 if (!KVM_READ(devfs_dirent.de_vnode, &vnode, sizeof (vnode))) { 658 dprintf(stderr, "can't read vnode at %p for pid %d\n", 659 (void *)devfs_dirent.de_vnode, Pid); 660 return 0; 661 } 662 fsp->fsid = (long)mount.mnt_stat.f_fsid.val[0]; 663 fsp->fileid = devfs_dirent.de_inode; 664 fsp->mode = (devfs_dirent.de_mode & ~S_IFMT) | S_IFCHR; 665 fsp->size = 0; 666 fsp->rdev = dev2udev(vnode.v_rdev); 667 668 return 1; 669} 670 671int 672nfs_filestat(struct vnode *vp, struct filestat *fsp) 673{ 674 struct nfsnode nfsnode; 675 mode_t mode; 676 677 if (!KVM_READ(VTONFS(vp), &nfsnode, sizeof (nfsnode))) { 678 dprintf(stderr, "can't read nfsnode at %p for pid %d\n", 679 (void *)VTONFS(vp), Pid); 680 return 0; 681 } 682 fsp->fsid = nfsnode.n_vattr.va_fsid; 683 fsp->fileid = nfsnode.n_vattr.va_fileid; 684 fsp->size = nfsnode.n_size; 685 fsp->rdev = nfsnode.n_vattr.va_rdev; 686 mode = (mode_t)nfsnode.n_vattr.va_mode; 687 switch (vp->v_type) { 688 case VREG: 689 mode |= S_IFREG; 690 break; 691 case VDIR: 692 mode |= S_IFDIR; 693 break; 694 case VBLK: 695 mode |= S_IFBLK; 696 break; 697 case VCHR: 698 mode |= S_IFCHR; 699 break; 700 case VLNK: 701 mode |= S_IFLNK; 702 break; 703 case VSOCK: 704 mode |= S_IFSOCK; 705 break; 706 case VFIFO: 707 mode |= S_IFIFO; 708 break; 709 case VNON: 710 case VBAD: 711 case VMARKER: 712 return 0; 713 }; 714 fsp->mode = mode; 715 716 return 1; 717} 718 719 720char * 721getmnton(struct mount *m) 722{ 723 static struct mount mount; 724 static struct mtab { 725 struct mtab *next; 726 struct mount *m; 727 char mntonname[MNAMELEN]; 728 } *mhead = NULL; 729 struct mtab *mt; 730 731 for (mt = mhead; mt != NULL; mt = mt->next) 732 if (m == mt->m) 733 return (mt->mntonname); 734 if (!KVM_READ(m, &mount, sizeof(struct mount))) { 735 warnx("can't read mount table at %p", (void *)m); 736 return (NULL); 737 } 738 if ((mt = malloc(sizeof (struct mtab))) == NULL) 739 err(1, NULL); 740 mt->m = m; 741 bcopy(&mount.mnt_stat.f_mntonname[0], &mt->mntonname[0], MNAMELEN); 742 mt->next = mhead; 743 mhead = mt; 744 return (mt->mntonname); 745} 746 747void 748pipetrans(struct pipe *pi, int i, int flag) 749{ 750 struct pipe pip; 751 char rw[3]; 752 753 PREFIX(i); 754 755 /* fill in socket */ 756 if (!KVM_READ(pi, &pip, sizeof(struct pipe))) { 757 dprintf(stderr, "can't read pipe at %p\n", (void *)pi); 758 goto bad; 759 } 760 761 printf("* pipe %8lx <-> %8lx", (u_long)pi, (u_long)pip.pipe_peer); 762 printf(" %6d", (int)pip.pipe_buffer.cnt); 763 rw[0] = '\0'; 764 if (flag & FREAD) 765 strcat(rw, "r"); 766 if (flag & FWRITE) 767 strcat(rw, "w"); 768 printf(" %2s", rw); 769 putchar('\n'); 770 return; 771 772bad: 773 printf("* error\n"); 774} 775 776void 777socktrans(struct socket *sock, int i) 778{ 779 static const char *stypename[] = { 780 "unused", /* 0 */ 781 "stream", /* 1 */ 782 "dgram", /* 2 */ 783 "raw", /* 3 */ 784 "rdm", /* 4 */ 785 "seqpak" /* 5 */ 786 }; 787#define STYPEMAX 5 788 struct socket so; 789 struct protosw proto; 790 struct domain dom; 791 struct inpcb inpcb; 792 struct unpcb unpcb; 793 int len; 794 char dname[32]; 795 796 PREFIX(i); 797 798 /* fill in socket */ 799 if (!KVM_READ(sock, &so, sizeof(struct socket))) { 800 dprintf(stderr, "can't read sock at %p\n", (void *)sock); 801 goto bad; 802 } 803 804 /* fill in protosw entry */ 805 if (!KVM_READ(so.so_proto, &proto, sizeof(struct protosw))) { 806 dprintf(stderr, "can't read protosw at %p", 807 (void *)so.so_proto); 808 goto bad; 809 } 810 811 /* fill in domain */ 812 if (!KVM_READ(proto.pr_domain, &dom, sizeof(struct domain))) { 813 dprintf(stderr, "can't read domain at %p\n", 814 (void *)proto.pr_domain); 815 goto bad; 816 } 817 818 if ((len = kvm_read(kd, (u_long)dom.dom_name, dname, 819 sizeof(dname) - 1)) < 0) { 820 dprintf(stderr, "can't read domain name at %p\n", 821 (void *)dom.dom_name); 822 dname[0] = '\0'; 823 } 824 else 825 dname[len] = '\0'; 826 827 if ((u_short)so.so_type > STYPEMAX) 828 printf("* %s ?%d", dname, so.so_type); 829 else 830 printf("* %s %s", dname, stypename[so.so_type]); 831 832 /* 833 * protocol specific formatting 834 * 835 * Try to find interesting things to print. For tcp, the interesting 836 * thing is the address of the tcpcb, for udp and others, just the 837 * inpcb (socket pcb). For unix domain, its the address of the socket 838 * pcb and the address of the connected pcb (if connected). Otherwise 839 * just print the protocol number and address of the socket itself. 840 * The idea is not to duplicate netstat, but to make available enough 841 * information for further analysis. 842 */ 843 switch(dom.dom_family) { 844 case AF_INET: 845 case AF_INET6: 846 getinetproto(proto.pr_protocol); 847 if (proto.pr_protocol == IPPROTO_TCP ) { 848 if (so.so_pcb) { 849 if (kvm_read(kd, (u_long)so.so_pcb, 850 (char *)&inpcb, sizeof(struct inpcb)) 851 != sizeof(struct inpcb)) { 852 dprintf(stderr, 853 "can't read inpcb at %p\n", 854 (void *)so.so_pcb); 855 goto bad; 856 } 857 printf(" %lx", (u_long)inpcb.inp_ppcb); 858 } 859 } 860 else if (so.so_pcb) 861 printf(" %lx", (u_long)so.so_pcb); 862 break; 863 case AF_UNIX: 864 /* print address of pcb and connected pcb */ 865 if (so.so_pcb) { 866 printf(" %lx", (u_long)so.so_pcb); 867 if (kvm_read(kd, (u_long)so.so_pcb, (char *)&unpcb, 868 sizeof(struct unpcb)) != sizeof(struct unpcb)){ 869 dprintf(stderr, "can't read unpcb at %p\n", 870 (void *)so.so_pcb); 871 goto bad; 872 } 873 if (unpcb.unp_conn) { 874 char shoconn[4], *cp; 875 876 cp = shoconn; 877 if (!(so.so_rcv.sb_state & SBS_CANTRCVMORE)) 878 *cp++ = '<'; 879 *cp++ = '-'; 880 if (!(so.so_snd.sb_state & SBS_CANTSENDMORE)) 881 *cp++ = '>'; 882 *cp = '\0'; 883 printf(" %s %lx", shoconn, 884 (u_long)unpcb.unp_conn); 885 } 886 } 887 break; 888 default: 889 /* print protocol number and socket address */ 890 printf(" %d %lx", proto.pr_protocol, (u_long)sock); 891 } 892 printf("\n"); 893 return; 894bad: 895 printf("* error\n"); 896} 897 898void 899ptstrans(struct tty *tp, int i, int flag) 900{ 901 struct tty tty; 902 char *name; 903 char rw[3]; 904 dev_t rdev; 905 906 PREFIX(i); 907 908 /* Obtain struct tty. */ 909 if (!KVM_READ(tp, &tty, sizeof(struct tty))) { 910 dprintf(stderr, "can't read tty at %p\n", (void *)tp); 911 goto bad; 912 } 913 914 /* Figure out the device name. */ 915 name = kdevtoname(tty.t_dev); 916 if (name == NULL) { 917 dprintf(stderr, "can't determine tty name at %p\n", (void *)tp); 918 goto bad; 919 } 920 921 rw[0] = '\0'; 922 if (flag & FREAD) 923 strcat(rw, "r"); 924 if (flag & FWRITE) 925 strcat(rw, "w"); 926 927 printf("* pseudo-terminal master "); 928 if (nflg || !name) { 929 rdev = dev2udev(tty.t_dev); 930 printf("%10d,%-2d", major(rdev), minor(rdev)); 931 } else { 932 printf("%10s", name); 933 } 934 printf(" %2s\n", rw); 935 936 free(name); 937 938 return; 939bad: 940 printf("* error\n"); 941} 942 943/* 944 * Read the cdev structure in the kernel in order to work out the 945 * associated dev_t 946 */ 947dev_t 948dev2udev(struct cdev *dev) 949{ 950 struct cdev_priv priv; 951 952 if (KVM_READ(cdev2priv(dev), &priv, sizeof priv)) { 953 return ((dev_t)priv.cdp_inode); 954 } else { 955 dprintf(stderr, "can't convert cdev *%p to a dev_t\n", dev); 956 return -1; 957 } 958} 959 960/* 961 * getinetproto -- 962 * print name of protocol number 963 */ 964void 965getinetproto(int number) 966{ 967 static int isopen; 968 struct protoent *pe; 969 970 if (!isopen) 971 setprotoent(++isopen); 972 if ((pe = getprotobynumber(number)) != NULL) 973 printf(" %s", pe->p_name); 974 else 975 printf(" %d", number); 976} 977 978int 979getfname(const char *filename) 980{ 981 struct stat statbuf; 982 DEVS *cur; 983 984 if (stat(filename, &statbuf)) { 985 warn("%s", filename); 986 return(0); 987 } 988 if ((cur = malloc(sizeof(DEVS))) == NULL) 989 err(1, NULL); 990 cur->next = devs; 991 devs = cur; 992 993 cur->ino = statbuf.st_ino; 994 cur->fsid = statbuf.st_dev; 995 cur->name = filename; 996 return(1); 997} 998 999#ifdef ZFS 1000void * 1001getvnodedata(struct vnode *vp) 1002{ 1003 return (vp->v_data); 1004} 1005 1006struct mount * 1007getvnodemount(struct vnode *vp) 1008{ 1009 return (vp->v_mount); 1010} 1011#endif 1012 1013void 1014usage(void) 1015{ 1016 (void)fprintf(stderr, 1017 "usage: fstat [-fmnv] [-M core] [-N system] [-p pid] [-u user] [file ...]\n"); 1018 exit(1); 1019} 1020