fstat.c revision 48463
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 44static const char rcsid[] = 45 "$Id: fstat.c,v 1.16 1998/07/06 21:01:16 bde Exp $"; 46#endif /* not lint */ 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/filedesc.h> 62#include <sys/queue.h> 63#include <sys/pipe.h> 64#define KERNEL 65#include <sys/file.h> 66#include <ufs/ufs/quota.h> 67#include <ufs/ufs/inode.h> 68#undef KERNEL 69#include <sys/mount.h> 70#include <nfs/nfsproto.h> 71#include <nfs/rpcv2.h> 72#include <nfs/nfs.h> 73#include <nfs/nfsnode.h> 74 75#include <net/route.h> 76#include <netinet/in.h> 77#include <netinet/in_systm.h> 78#include <netinet/ip.h> 79#include <netinet/in_pcb.h> 80 81#include <ctype.h> 82#include <err.h> 83#include <fcntl.h> 84#include <kvm.h> 85#include <limits.h> 86#include <nlist.h> 87#include <paths.h> 88#include <pwd.h> 89#include <stdio.h> 90#include <stdlib.h> 91#include <string.h> 92#include <unistd.h> 93#include <netdb.h> 94 95#define TEXT -1 96#define CDIR -2 97#define RDIR -3 98#define TRACE -4 99 100typedef struct devs { 101 struct devs *next; 102 long fsid; 103 ino_t ino; 104 char *name; 105} DEVS; 106DEVS *devs; 107 108struct filestat { 109 long fsid; 110 long fileid; 111 mode_t mode; 112 u_long size; 113 dev_t rdev; 114}; 115 116#ifdef notdef 117struct nlist nl[] = { 118 { "" }, 119}; 120#endif 121 122int fsflg, /* show files on same filesystem as file(s) argument */ 123 pflg, /* show files open by a particular pid */ 124 uflg; /* show files open by a particular (effective) user */ 125int checkfile; /* true if restricting to particular files or filesystems */ 126int nflg; /* (numerical) display f.s. and rdev as dev_t */ 127int vflg; /* display errors in locating kernel data objects etc... */ 128 129#define dprintf if (vflg) fprintf 130 131struct file **ofiles; /* buffer of pointers to file structures */ 132int maxfiles; 133#define ALLOC_OFILES(d) \ 134 if ((d) > maxfiles) { \ 135 free(ofiles); \ 136 ofiles = malloc((d) * sizeof(struct file *)); \ 137 if (ofiles == NULL) { \ 138 err(1, NULL); \ 139 } \ 140 maxfiles = (d); \ 141 } 142 143/* 144 * a kvm_read that returns true if everything is read 145 */ 146#define KVM_READ(kaddr, paddr, len) \ 147 (kvm_read(kd, (u_long)(kaddr), (char *)(paddr), (len)) == (len)) 148 149kvm_t *kd; 150 151void dofiles __P((struct kinfo_proc *kp)); 152void vtrans __P((struct vnode *vp, int i, int flag)); 153int ufs_filestat __P((struct vnode *vp, struct filestat *fsp)); 154int nfs_filestat __P((struct vnode *vp, struct filestat *fsp)); 155char *getmnton __P((struct mount *m)); 156void pipetrans __P((struct pipe *pi, int i, int flag)); 157void socktrans __P((struct socket *sock, int i)); 158void getinetproto __P((int number)); 159int getfname __P((char *filename)); 160void usage __P((void)); 161 162 163int 164main(argc, argv) 165 int argc; 166 char **argv; 167{ 168 register struct passwd *passwd; 169 struct kinfo_proc *p, *plast; 170 int arg, ch, what; 171 char *memf, *nlistf; 172 char buf[_POSIX2_LINE_MAX]; 173 int cnt; 174 175 arg = 0; 176 what = KERN_PROC_ALL; 177 nlistf = memf = NULL; 178 while ((ch = getopt(argc, argv, "fnp:u:vN:M:")) != -1) 179 switch((char)ch) { 180 case 'f': 181 fsflg = 1; 182 break; 183 case 'M': 184 memf = optarg; 185 break; 186 case 'N': 187 nlistf = optarg; 188 break; 189 case 'n': 190 nflg = 1; 191 break; 192 case 'p': 193 if (pflg++) 194 usage(); 195 if (!isdigit(*optarg)) { 196 warnx("-p requires a process id"); 197 usage(); 198 } 199 what = KERN_PROC_PID; 200 arg = atoi(optarg); 201 break; 202 case 'u': 203 if (uflg++) 204 usage(); 205 if (!(passwd = getpwnam(optarg))) 206 errx(1, "%s: unknown uid", optarg); 207 what = KERN_PROC_UID; 208 arg = passwd->pw_uid; 209 break; 210 case 'v': 211 vflg = 1; 212 break; 213 case '?': 214 default: 215 usage(); 216 } 217 218 if (*(argv += optind)) { 219 for (; *argv; ++argv) { 220 if (getfname(*argv)) 221 checkfile = 1; 222 } 223 if (!checkfile) /* file(s) specified, but none accessable */ 224 exit(1); 225 } 226 227 ALLOC_OFILES(256); /* reserve space for file pointers */ 228 229 if (fsflg && !checkfile) { 230 /* -f with no files means use wd */ 231 if (getfname(".") == 0) 232 exit(1); 233 checkfile = 1; 234 } 235 236 /* 237 * Discard setgid privileges if not the running kernel so that bad 238 * guys can't print interesting stuff from kernel memory. 239 */ 240 if (nlistf != NULL || memf != NULL) 241 setgid(getgid()); 242 243 if ((kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, buf)) == NULL) 244 errx(1, "%s", buf); 245#ifdef notdef 246 if (kvm_nlist(kd, nl) != 0) 247 errx(1, "no namelist: %s", kvm_geterr(kd)); 248#endif 249 if ((p = kvm_getprocs(kd, what, arg, &cnt)) == NULL) 250 errx(1, "%s", kvm_geterr(kd)); 251 if (nflg) 252 printf("%s", 253"USER CMD PID FD DEV INUM MODE SZ|DV R/W"); 254 else 255 printf("%s", 256"USER CMD PID FD MOUNT INUM MODE SZ|DV R/W"); 257 if (checkfile && fsflg == 0) 258 printf(" NAME\n"); 259 else 260 putchar('\n'); 261 262 for (plast = &p[cnt]; p < plast; ++p) { 263 if (p->kp_proc.p_stat == SZOMB) 264 continue; 265 dofiles(p); 266 } 267 exit(0); 268} 269 270char *Uname, *Comm; 271int Pid; 272 273#define PREFIX(i) printf("%-8.8s %-10s %5d", Uname, Comm, Pid); \ 274 switch(i) { \ 275 case TEXT: \ 276 printf(" text"); \ 277 break; \ 278 case CDIR: \ 279 printf(" wd"); \ 280 break; \ 281 case RDIR: \ 282 printf(" root"); \ 283 break; \ 284 case TRACE: \ 285 printf(" tr"); \ 286 break; \ 287 default: \ 288 printf(" %4d", i); \ 289 break; \ 290 } 291 292/* 293 * print open files attributed to this process 294 */ 295void 296dofiles(kp) 297 struct kinfo_proc *kp; 298{ 299 int i; 300 struct file file; 301 struct filedesc0 filed0; 302#define filed filed0.fd_fd 303 struct proc *p = &kp->kp_proc; 304 struct eproc *ep = &kp->kp_eproc; 305 306 Uname = user_from_uid(ep->e_ucred.cr_uid, 0); 307 Pid = p->p_pid; 308 Comm = p->p_comm; 309 310 if (p->p_fd == NULL) 311 return; 312 if (!KVM_READ(p->p_fd, &filed0, sizeof (filed0))) { 313 dprintf(stderr, "can't read filedesc at %p for pid %d\n", 314 (void *)p->p_fd, Pid); 315 return; 316 } 317 /* 318 * root directory vnode, if one 319 */ 320 if (filed.fd_rdir) 321 vtrans(filed.fd_rdir, RDIR, FREAD); 322 /* 323 * current working directory vnode 324 */ 325 vtrans(filed.fd_cdir, CDIR, FREAD); 326 /* 327 * ktrace vnode, if one 328 */ 329 if (p->p_tracep) 330 vtrans(p->p_tracep, TRACE, FREAD|FWRITE); 331 /* 332 * text vnode, if one 333 */ 334 if (p->p_textvp) 335 vtrans(p->p_textvp, TEXT, FREAD); 336 /* 337 * open files 338 */ 339#define FPSIZE (sizeof (struct file *)) 340 ALLOC_OFILES(filed.fd_lastfile+1); 341 if (filed.fd_nfiles > NDFILE) { 342 if (!KVM_READ(filed.fd_ofiles, ofiles, 343 (filed.fd_lastfile+1) * FPSIZE)) { 344 dprintf(stderr, 345 "can't read file structures at %p for pid %d\n", 346 (void *)filed.fd_ofiles, Pid); 347 return; 348 } 349 } else 350 bcopy(filed0.fd_dfiles, ofiles, (filed.fd_lastfile+1) * FPSIZE); 351 for (i = 0; i <= filed.fd_lastfile; i++) { 352 if (ofiles[i] == NULL) 353 continue; 354 if (!KVM_READ(ofiles[i], &file, sizeof (struct file))) { 355 dprintf(stderr, "can't read file %d at %p for pid %d\n", 356 i, (void *)ofiles[i], Pid); 357 continue; 358 } 359 if (file.f_type == DTYPE_VNODE) 360 vtrans((struct vnode *)file.f_data, i, file.f_flag); 361 else if (file.f_type == DTYPE_SOCKET) { 362 if (checkfile == 0) 363 socktrans((struct socket *)file.f_data, i); 364 } 365#ifdef DTYPE_PIPE 366 else if (file.f_type == DTYPE_PIPE) { 367 if (checkfile == 0) 368 pipetrans((struct pipe *)file.f_data, i, 369 file.f_flag); 370 } 371#endif 372 else { 373 dprintf(stderr, 374 "unknown file type %d for file %d of pid %d\n", 375 file.f_type, i, Pid); 376 } 377 } 378} 379 380void 381vtrans(vp, i, flag) 382 struct vnode *vp; 383 int i; 384 int flag; 385{ 386 struct vnode vn; 387 struct filestat fst; 388 char rw[3], mode[15]; 389 char *badtype = NULL, *filename, *getmnton(); 390 391 filename = badtype = NULL; 392 if (!KVM_READ(vp, &vn, sizeof (struct vnode))) { 393 dprintf(stderr, "can't read vnode at %p for pid %d\n", 394 (void *)vp, Pid); 395 return; 396 } 397 if (vn.v_type == VNON || vn.v_tag == VT_NON) 398 badtype = "none"; 399 else if (vn.v_type == VBAD) 400 badtype = "bad"; 401 else 402 switch (vn.v_tag) { 403 case VT_UFS: 404 if (!ufs_filestat(&vn, &fst)) 405 badtype = "error"; 406 break; 407 case VT_MFS: 408 if (!ufs_filestat(&vn, &fst)) 409 badtype = "error"; 410 break; 411 case VT_NFS: 412 if (!nfs_filestat(&vn, &fst)) 413 badtype = "error"; 414 break; 415 default: { 416 static char unknown[10]; 417 sprintf(badtype = unknown, "?(%x)", vn.v_tag); 418 break;; 419 } 420 } 421 if (checkfile) { 422 int fsmatch = 0; 423 register DEVS *d; 424 425 if (badtype) 426 return; 427 for (d = devs; d != NULL; d = d->next) 428 if (d->fsid == fst.fsid) { 429 fsmatch = 1; 430 if (d->ino == fst.fileid) { 431 filename = d->name; 432 break; 433 } 434 } 435 if (fsmatch == 0 || (filename == NULL && fsflg == 0)) 436 return; 437 } 438 PREFIX(i); 439 if (badtype) { 440 (void)printf(" - - %10s -\n", badtype); 441 return; 442 } 443 if (nflg) 444 (void)printf(" %2d,%-2d", major(fst.fsid), minor(fst.fsid)); 445 else 446 (void)printf(" %-8s", getmnton(vn.v_mount)); 447 if (nflg) 448 (void)sprintf(mode, "%o", fst.mode); 449 else 450 strmode(fst.mode, mode); 451 (void)printf(" %6ld %10s", fst.fileid, mode); 452 switch (vn.v_type) { 453 case VBLK: 454 case VCHR: { 455 char *name; 456 457 if (nflg || ((name = devname(fst.rdev, vn.v_type == VCHR ? 458 S_IFCHR : S_IFBLK)) == NULL)) 459 printf(" %2d,%-2d", major(fst.rdev), minor(fst.rdev)); 460 else 461 printf(" %6s", name); 462 break; 463 } 464 default: 465 printf(" %6lu", fst.size); 466 } 467 rw[0] = '\0'; 468 if (flag & FREAD) 469 strcat(rw, "r"); 470 if (flag & FWRITE) 471 strcat(rw, "w"); 472 printf(" %2s", rw); 473 if (filename && !fsflg) 474 printf(" %s", filename); 475 putchar('\n'); 476} 477 478int 479ufs_filestat(vp, fsp) 480 struct vnode *vp; 481 struct filestat *fsp; 482{ 483 struct inode inode; 484 485 if (!KVM_READ(VTOI(vp), &inode, sizeof (inode))) { 486 dprintf(stderr, "can't read inode at %p for pid %d\n", 487 (void *)VTOI(vp), Pid); 488 return 0; 489 } 490 fsp->fsid = inode.i_dev & 0xffff; 491 fsp->fileid = (long)inode.i_number; 492 fsp->mode = (mode_t)inode.i_mode; 493 fsp->size = (u_long)inode.i_size; 494 fsp->rdev = inode.i_rdev; 495 496 return 1; 497} 498 499int 500nfs_filestat(vp, fsp) 501 struct vnode *vp; 502 struct filestat *fsp; 503{ 504 struct nfsnode nfsnode; 505 register mode_t mode; 506 507 if (!KVM_READ(VTONFS(vp), &nfsnode, sizeof (nfsnode))) { 508 dprintf(stderr, "can't read nfsnode at %p for pid %d\n", 509 (void *)VTONFS(vp), Pid); 510 return 0; 511 } 512 fsp->fsid = nfsnode.n_vattr.va_fsid; 513 fsp->fileid = nfsnode.n_vattr.va_fileid; 514 fsp->size = nfsnode.n_size; 515 fsp->rdev = nfsnode.n_vattr.va_rdev; 516 mode = (mode_t)nfsnode.n_vattr.va_mode; 517 switch (vp->v_type) { 518 case VREG: 519 mode |= S_IFREG; 520 break; 521 case VDIR: 522 mode |= S_IFDIR; 523 break; 524 case VBLK: 525 mode |= S_IFBLK; 526 break; 527 case VCHR: 528 mode |= S_IFCHR; 529 break; 530 case VLNK: 531 mode |= S_IFLNK; 532 break; 533 case VSOCK: 534 mode |= S_IFSOCK; 535 break; 536 case VFIFO: 537 mode |= S_IFIFO; 538 break; 539 case VNON: 540 case VBAD: 541 return 0; 542 }; 543 fsp->mode = mode; 544 545 return 1; 546} 547 548 549char * 550getmnton(m) 551 struct mount *m; 552{ 553 static struct mount mount; 554 static struct mtab { 555 struct mtab *next; 556 struct mount *m; 557 char mntonname[MNAMELEN]; 558 } *mhead = NULL; 559 register struct mtab *mt; 560 561 for (mt = mhead; mt != NULL; mt = mt->next) 562 if (m == mt->m) 563 return (mt->mntonname); 564 if (!KVM_READ(m, &mount, sizeof(struct mount))) { 565 warnx("can't read mount table at %p", (void *)m); 566 return (NULL); 567 } 568 if ((mt = malloc(sizeof (struct mtab))) == NULL) 569 err(1, NULL); 570 mt->m = m; 571 bcopy(&mount.mnt_stat.f_mntonname[0], &mt->mntonname[0], MNAMELEN); 572 mt->next = mhead; 573 mhead = mt; 574 return (mt->mntonname); 575} 576 577void 578pipetrans(pi, i, flag) 579 struct pipe *pi; 580 int i; 581 int flag; 582{ 583 struct pipe pip; 584 char rw[3]; 585 586 PREFIX(i); 587 588 /* fill in socket */ 589 if (!KVM_READ(pi, &pip, sizeof(struct pipe))) { 590 dprintf(stderr, "can't read pipe at %p\n", (void *)pi); 591 goto bad; 592 } 593 594 printf("* pipe %8x <-> %8x", (int)pi, (int)pip.pipe_peer); 595 printf(" %6d", (int)pip.pipe_buffer.cnt); 596 rw[0] = '\0'; 597 if (flag & FREAD) 598 strcat(rw, "r"); 599 if (flag & FWRITE) 600 strcat(rw, "w"); 601 printf(" %2s", rw); 602 putchar('\n'); 603 return; 604 605bad: 606 printf("* error\n"); 607} 608 609void 610socktrans(sock, i) 611 struct socket *sock; 612 int i; 613{ 614 static char *stypename[] = { 615 "unused", /* 0 */ 616 "stream", /* 1 */ 617 "dgram", /* 2 */ 618 "raw", /* 3 */ 619 "rdm", /* 4 */ 620 "seqpak" /* 5 */ 621 }; 622#define STYPEMAX 5 623 struct socket so; 624 struct protosw proto; 625 struct domain dom; 626 struct inpcb inpcb; 627 struct unpcb unpcb; 628 int len; 629 char dname[32], *strcpy(); 630 631 PREFIX(i); 632 633 /* fill in socket */ 634 if (!KVM_READ(sock, &so, sizeof(struct socket))) { 635 dprintf(stderr, "can't read sock at %p\n", (void *)sock); 636 goto bad; 637 } 638 639 /* fill in protosw entry */ 640 if (!KVM_READ(so.so_proto, &proto, sizeof(struct protosw))) { 641 dprintf(stderr, "can't read protosw at %p", 642 (void *)so.so_proto); 643 goto bad; 644 } 645 646 /* fill in domain */ 647 if (!KVM_READ(proto.pr_domain, &dom, sizeof(struct domain))) { 648 dprintf(stderr, "can't read domain at %p\n", 649 (void *)proto.pr_domain); 650 goto bad; 651 } 652 653 if ((len = kvm_read(kd, (u_long)dom.dom_name, dname, 654 sizeof(dname) - 1)) < 0) { 655 dprintf(stderr, "can't read domain name at %p\n", 656 (void *)dom.dom_name); 657 dname[0] = '\0'; 658 } 659 else 660 dname[len] = '\0'; 661 662 if ((u_short)so.so_type > STYPEMAX) 663 printf("* %s ?%d", dname, so.so_type); 664 else 665 printf("* %s %s", dname, stypename[so.so_type]); 666 667 /* 668 * protocol specific formatting 669 * 670 * Try to find interesting things to print. For tcp, the interesting 671 * thing is the address of the tcpcb, for udp and others, just the 672 * inpcb (socket pcb). For unix domain, its the address of the socket 673 * pcb and the address of the connected pcb (if connected). Otherwise 674 * just print the protocol number and address of the socket itself. 675 * The idea is not to duplicate netstat, but to make available enough 676 * information for further analysis. 677 */ 678 switch(dom.dom_family) { 679 case AF_INET: 680 getinetproto(proto.pr_protocol); 681 if (proto.pr_protocol == IPPROTO_TCP ) { 682 if (so.so_pcb) { 683 if (kvm_read(kd, (u_long)so.so_pcb, 684 (char *)&inpcb, sizeof(struct inpcb)) 685 != sizeof(struct inpcb)) { 686 dprintf(stderr, 687 "can't read inpcb at %p\n", 688 (void *)so.so_pcb); 689 goto bad; 690 } 691 printf(" %x", (int)inpcb.inp_ppcb); 692 } 693 } 694 else if (so.so_pcb) 695 printf(" %x", (int)so.so_pcb); 696 break; 697 case AF_UNIX: 698 /* print address of pcb and connected pcb */ 699 if (so.so_pcb) { 700 printf(" %x", (int)so.so_pcb); 701 if (kvm_read(kd, (u_long)so.so_pcb, (char *)&unpcb, 702 sizeof(struct unpcb)) != sizeof(struct unpcb)){ 703 dprintf(stderr, "can't read unpcb at %p\n", 704 (void *)so.so_pcb); 705 goto bad; 706 } 707 if (unpcb.unp_conn) { 708 char shoconn[4], *cp; 709 710 cp = shoconn; 711 if (!(so.so_state & SS_CANTRCVMORE)) 712 *cp++ = '<'; 713 *cp++ = '-'; 714 if (!(so.so_state & SS_CANTSENDMORE)) 715 *cp++ = '>'; 716 *cp = '\0'; 717 printf(" %s %x", shoconn, 718 (int)unpcb.unp_conn); 719 } 720 } 721 break; 722 default: 723 /* print protocol number and socket address */ 724 printf(" %d %x", proto.pr_protocol, (int)sock); 725 } 726 printf("\n"); 727 return; 728bad: 729 printf("* error\n"); 730} 731 732/* 733 * getinetproto -- 734 * print name of protocol number 735 */ 736void 737getinetproto(number) 738 int number; 739{ 740 static int isopen; 741 register struct protoent *pe; 742 743 if (!isopen) 744 setprotoent(++isopen); 745 if ((pe = getprotobynumber(number)) != NULL) 746 printf(" %s", pe->p_name); 747 else 748 printf(" %d", number); 749} 750 751int 752getfname(filename) 753 char *filename; 754{ 755 struct stat statbuf; 756 DEVS *cur; 757 758 if (stat(filename, &statbuf)) { 759 warn("%s", filename); 760 return(0); 761 } 762 if ((cur = malloc(sizeof(DEVS))) == NULL) 763 err(1, NULL); 764 cur->next = devs; 765 devs = cur; 766 767 cur->ino = statbuf.st_ino; 768 cur->fsid = statbuf.st_dev & 0xffff; 769 cur->name = filename; 770 return(1); 771} 772 773void 774usage() 775{ 776 (void)fprintf(stderr, 777 "usage: fstat [-fnv] [-p pid] [-u user] [-N system] [-M core] [file ...]\n"); 778 exit(1); 779} 780