760 lines
18 KiB
C
760 lines
18 KiB
C
/* $NetBSD: quotacheck.c,v 1.28 2003/08/07 11:25:39 agc Exp $ */
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/*
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* Copyright (c) 1980, 1990, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Robert Elz at The University of Melbourne.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#ifndef lint
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__COPYRIGHT("@(#) Copyright (c) 1980, 1990, 1993\n\
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The Regents of the University of California. All rights reserved.\n");
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#endif /* not lint */
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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)quotacheck.c 8.6 (Berkeley) 4/28/95";
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#else
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__RCSID("$NetBSD: quotacheck.c,v 1.28 2003/08/07 11:25:39 agc Exp $");
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#endif
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#endif /* not lint */
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/*
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* Fix up / report on disk quotas & usage
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*/
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#include <sys/param.h>
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#include <sys/stat.h>
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#include <sys/queue.h>
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#include <ufs/ufs/dinode.h>
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#include <ufs/ufs/quota.h>
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#include <ufs/ufs/ufs_bswap.h>
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#include <ufs/ffs/fs.h>
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#include <ufs/ffs/ffs_extern.h>
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#include <err.h>
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#include <fcntl.h>
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#include <fstab.h>
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#include <pwd.h>
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#include <grp.h>
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#include <errno.h>
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#include <unistd.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "fsutil.h"
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static char *qfname = QUOTAFILENAME;
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static char *qfextension[] = INITQFNAMES;
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static char *quotagroup = QUOTAGROUP;
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static union {
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struct fs sblk;
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char dummy[MAXBSIZE];
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} un;
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#define sblock un.sblk
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static long dev_bsize;
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static long maxino;
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struct quotaname {
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long flags;
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char grpqfname[MAXPATHLEN + 1];
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char usrqfname[MAXPATHLEN + 1];
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};
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#define HASUSR 1
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#define HASGRP 2
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struct fileusage {
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struct fileusage *fu_next;
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u_long fu_curinodes;
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u_long fu_curblocks;
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u_long fu_id;
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char fu_name[1];
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/* actually bigger */
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};
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#define FUHASH 1024 /* must be power of two */
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static struct fileusage *fuhead[MAXQUOTAS][FUHASH];
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union dinode {
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struct ufs1_dinode dp1;
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struct ufs2_dinode dp2;
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};
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#define DIP(dp, field) \
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(is_ufs2 ? (dp)->dp2.di_##field : (dp)->dp1.di_##field)
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static int aflag; /* all file systems */
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static int gflag; /* check group quotas */
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static int uflag; /* check user quotas */
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static int vflag; /* verbose */
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static int fi; /* open disk file descriptor */
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static u_long highid[MAXQUOTAS];/* highest addid()'ed identifier per type */
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static int needswap; /* FS is in swapped order */
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static int got_siginfo = 0; /* got a siginfo signal */
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static int is_ufs2;
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int main __P((int, char *[]));
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static void usage __P((void));
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static void *needchk __P((struct fstab *));
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static int chkquota __P((const char *, const char *, const char *, void *,
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pid_t *));
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static int update __P((const char *, const char *, int));
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static int oneof __P((const char *, char *[], int));
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static int getquotagid __P((void));
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static int hasquota __P((struct fstab *, int, char **));
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static struct fileusage *lookup __P((u_long, int));
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static struct fileusage *addid __P((u_long, int, const char *));
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static union dinode *getnextinode __P((ino_t));
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static void setinodebuf __P((ino_t));
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static void freeinodebuf __P((void));
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static void bread __P((daddr_t, char *, long));
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static void infohandler __P((int sig));
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static void swap_dinode1(union dinode *, int);
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static void swap_dinode2(union dinode *, int);
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int
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main(argc, argv)
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int argc;
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char *argv[];
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{
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struct fstab *fs;
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struct passwd *pw;
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struct group *gr;
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struct quotaname *auxdata;
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int i, argnum, maxrun, errs;
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long done = 0;
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int flags = CHECK_PREEN;
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const char *name;
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int ch;
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errs = maxrun = 0;
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while ((ch = getopt(argc, argv, "aguvdl:")) != -1) {
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switch(ch) {
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case 'a':
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aflag++;
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break;
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case 'd':
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flags |= CHECK_DEBUG;
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break;
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case 'g':
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gflag++;
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break;
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case 'u':
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uflag++;
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break;
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case 'v':
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vflag++;
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break;
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case 'l':
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maxrun = atoi(optarg);
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break;
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default:
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usage();
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}
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}
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argc -= optind;
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argv += optind;
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if ((argc == 0 && !aflag) || (argc > 0 && aflag))
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usage();
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if (!gflag && !uflag) {
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gflag++;
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uflag++;
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}
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/* If -a, we do not want to pay the cost of processing every
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* group and password entry if there are no filesystems with quotas
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*/
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if (aflag) {
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i = 0;
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while ((fs = getfsent()) != NULL) {
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if (needchk(fs))
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i=1;
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}
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endfsent();
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if (!i) /* No filesystems with quotas */
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exit(0);
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}
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if (gflag) {
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setgrent();
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while ((gr = getgrent()) != 0)
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(void) addid((u_long)gr->gr_gid, GRPQUOTA, gr->gr_name);
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endgrent();
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}
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if (uflag) {
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setpwent();
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while ((pw = getpwent()) != 0)
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(void) addid((u_long)pw->pw_uid, USRQUOTA, pw->pw_name);
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endpwent();
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}
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if (aflag)
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exit(checkfstab(flags, maxrun, needchk, chkquota));
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if (setfsent() == 0)
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err(1, "%s: can't open", FSTAB);
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while ((fs = getfsent()) != NULL) {
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if (((argnum = oneof(fs->fs_file, argv, argc)) >= 0 ||
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(argnum = oneof(fs->fs_spec, argv, argc)) >= 0) &&
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(auxdata = needchk(fs)) &&
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(name = blockcheck(fs->fs_spec))) {
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done |= 1 << argnum;
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errs += chkquota(fs->fs_type, name, fs->fs_file,
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auxdata, NULL);
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}
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}
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endfsent();
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for (i = 0; i < argc; i++)
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if ((done & (1 << i)) == 0)
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fprintf(stderr, "%s not found in %s\n",
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argv[i], FSTAB);
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exit(errs);
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}
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static void
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usage()
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{
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(void)fprintf(stderr,
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"Usage:\t%s -a [-guv]\n\t%s [-guv] filesys ...\n", getprogname(),
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getprogname());
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exit(1);
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}
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static void *
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needchk(fs)
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struct fstab *fs;
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{
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struct quotaname *qnp;
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char *qfnp;
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if (strcmp(fs->fs_vfstype, "ffs") ||
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strcmp(fs->fs_type, FSTAB_RW))
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return (NULL);
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if ((qnp = malloc(sizeof(*qnp))) == NULL)
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err(1, "%s", strerror(errno));
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qnp->flags = 0;
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if (gflag && hasquota(fs, GRPQUOTA, &qfnp)) {
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strlcpy(qnp->grpqfname, qfnp, sizeof(qnp->grpqfname));
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qnp->flags |= HASGRP;
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}
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if (uflag && hasquota(fs, USRQUOTA, &qfnp)) {
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strlcpy(qnp->usrqfname, qfnp, sizeof(qnp->usrqfname));
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qnp->flags |= HASUSR;
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}
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if (qnp->flags)
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return (qnp);
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free(qnp);
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return (NULL);
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}
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off_t sblock_try[] = SBLOCKSEARCH;
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/*
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* Scan the specified filesystem to check quota(s) present on it.
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*/
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static int
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chkquota(type, fsname, mntpt, v, pid)
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const char *type, *fsname, *mntpt;
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void *v;
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pid_t *pid;
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{
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struct quotaname *qnp = v;
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struct fileusage *fup;
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union dinode *dp;
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int cg, i, mode, errs = 0, inosused;
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ino_t ino;
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struct cg *cgp;
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if (pid != NULL) {
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switch ((*pid = fork())) {
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default:
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break;
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case 0:
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return 0;
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case -1:
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err(1, "Cannot fork");
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}
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}
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if ((fi = open(fsname, O_RDONLY, 0)) < 0) {
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warn("Cannot open %s", fsname);
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return 1;
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}
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if (vflag) {
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(void)printf("*** Checking ");
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if (qnp->flags & HASUSR)
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(void)printf("%s%s", qfextension[USRQUOTA],
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(qnp->flags & HASGRP) ? " and " : "");
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if (qnp->flags & HASGRP)
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(void)printf("%s", qfextension[GRPQUOTA]);
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(void)printf(" quotas for %s (%s)\n", fsname, mntpt);
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}
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signal(SIGINFO, infohandler);
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sync();
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dev_bsize = 1;
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cgp = malloc(sblock.fs_cgsize);
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if (cgp == NULL) {
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warn("%s: can't allocate %d bytes of cg space", fsname,
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sblock.fs_cgsize);
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return 1;
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}
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for (i = 0; sblock_try[i] != -1; i++) {
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bread(sblock_try[i], (char *)&sblock, SBLOCKSIZE);
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switch (sblock.fs_magic) {
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case FS_UFS2_MAGIC:
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is_ufs2 = 1;
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/*FALLTHROUGH*/
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case FS_UFS1_MAGIC:
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goto found;
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case FS_UFS2_MAGIC_SWAPPED:
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is_ufs2 = 1;
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/*FALLTHROUGH*/
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case FS_UFS1_MAGIC_SWAPPED:
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needswap = 1;
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goto found;
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default:
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continue;
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}
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}
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warnx("%s: superblock not found", fsname);
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free(cgp);
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return 1;
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found:
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if (needswap)
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ffs_sb_swap(&sblock, &sblock);
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dev_bsize = sblock.fs_fsize / fsbtodb(&sblock, 1);
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maxino = sblock.fs_ncg * sblock.fs_ipg;
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for (ino = 0, cg = 0; cg < sblock.fs_ncg; cg++) {
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setinodebuf(cg * sblock.fs_ipg);
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if (sblock.fs_magic == FS_UFS2_MAGIC) {
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bread(fsbtodb(&sblock, cgtod(&sblock, cg)), (char *)cgp,
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sblock.fs_cgsize);
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if (needswap)
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ffs_cg_swap(cgp, cgp, &sblock);
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inosused = cgp->cg_initediblk;
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} else
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inosused = sblock.fs_ipg;
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for (i = 0; i < inosused; i++, ino++) {
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if (got_siginfo) {
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fprintf(stderr,
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"%s: cyl group %d of %d (%d%%)\n",
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fsname, cg, sblock.fs_ncg,
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cg * 100 / sblock.fs_ncg);
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got_siginfo = 0;
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}
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if (ino < ROOTINO)
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continue;
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if ((dp = getnextinode(ino)) == NULL)
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continue;
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if ((mode = DIP(dp, mode) & IFMT) == 0)
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continue;
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if (qnp->flags & HASGRP) {
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fup = addid((u_long)DIP(dp, gid), GRPQUOTA,
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(char *)0);
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fup->fu_curinodes++;
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if (mode == IFREG || mode == IFDIR ||
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mode == IFLNK)
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fup->fu_curblocks += DIP(dp, blocks);
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}
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if (qnp->flags & HASUSR) {
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fup = addid((u_long)DIP(dp, uid), USRQUOTA,
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(char *)0);
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fup->fu_curinodes++;
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if (mode == IFREG || mode == IFDIR ||
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mode == IFLNK)
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fup->fu_curblocks += DIP(dp, blocks);
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}
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}
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}
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freeinodebuf();
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free(cgp);
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if (qnp->flags & HASUSR)
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errs += update(mntpt, qnp->usrqfname, USRQUOTA);
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if (qnp->flags & HASGRP)
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errs += update(mntpt, qnp->grpqfname, GRPQUOTA);
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close(fi);
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return errs;
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}
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/*
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* Update a specified quota file.
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*/
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static int
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update(fsname, quotafile, type)
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const char *fsname, *quotafile;
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int type;
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{
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struct fileusage *fup;
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FILE *qfi, *qfo;
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u_long id, lastid;
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struct dqblk dqbuf;
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static int warned = 0;
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static struct dqblk zerodqbuf;
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static struct fileusage zerofileusage;
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if ((qfo = fopen(quotafile, "r+")) == NULL) {
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if (errno == ENOENT)
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qfo = fopen(quotafile, "w+");
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if (qfo) {
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(void) fprintf(stderr,
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"quotacheck: creating quota file %s\n", quotafile);
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#define MODE (S_IRUSR|S_IWUSR|S_IRGRP)
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(void) fchown(fileno(qfo), getuid(), getquotagid());
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(void) fchmod(fileno(qfo), MODE);
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} else {
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(void) fprintf(stderr,
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"quotacheck: %s: %s\n", quotafile, strerror(errno));
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return (1);
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}
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}
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if ((qfi = fopen(quotafile, "r")) == NULL) {
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(void) fprintf(stderr,
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"quotacheck: %s: %s\n", quotafile, strerror(errno));
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(void) fclose(qfo);
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return (1);
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}
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if (quotactl(fsname, QCMD(Q_SYNC, type), (u_long)0, (caddr_t)0) < 0 &&
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errno == EOPNOTSUPP && !warned && vflag) {
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warned++;
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(void)printf("*** Warning: %s\n",
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"Quotas are not compiled into this kernel");
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}
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for (lastid = highid[type], id = 0; id <= lastid; id++) {
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if (fread((char *)&dqbuf, sizeof(struct dqblk), 1, qfi) == 0)
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dqbuf = zerodqbuf;
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if ((fup = lookup(id, type)) == 0)
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fup = &zerofileusage;
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if (dqbuf.dqb_curinodes == fup->fu_curinodes &&
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dqbuf.dqb_curblocks == fup->fu_curblocks) {
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fup->fu_curinodes = 0;
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fup->fu_curblocks = 0;
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(void) fseek(qfo, (long)sizeof(struct dqblk), 1);
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continue;
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}
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if (vflag) {
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if (aflag)
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printf("%s: ", fsname);
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printf("%-8s fixed:", fup->fu_name);
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if (dqbuf.dqb_curinodes != fup->fu_curinodes)
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(void)printf("\tinodes %d -> %ld",
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dqbuf.dqb_curinodes, fup->fu_curinodes);
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if (dqbuf.dqb_curblocks != fup->fu_curblocks)
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(void)printf("\tblocks %d -> %ld",
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dqbuf.dqb_curblocks, fup->fu_curblocks);
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(void)printf("\n");
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}
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/*
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* Reset time limit if have a soft limit and were
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* previously under it, but are now over it.
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*/
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if (dqbuf.dqb_bsoftlimit &&
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dqbuf.dqb_curblocks < dqbuf.dqb_bsoftlimit &&
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fup->fu_curblocks >= dqbuf.dqb_bsoftlimit)
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dqbuf.dqb_btime = 0;
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if (dqbuf.dqb_isoftlimit &&
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dqbuf.dqb_curblocks < dqbuf.dqb_isoftlimit &&
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fup->fu_curblocks >= dqbuf.dqb_isoftlimit)
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dqbuf.dqb_itime = 0;
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dqbuf.dqb_curinodes = fup->fu_curinodes;
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dqbuf.dqb_curblocks = fup->fu_curblocks;
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(void) fwrite((char *)&dqbuf, sizeof(struct dqblk), 1, qfo);
|
|
(void) quotactl(fsname, QCMD(Q_SETUSE, type), id,
|
|
(caddr_t)&dqbuf);
|
|
fup->fu_curinodes = 0;
|
|
fup->fu_curblocks = 0;
|
|
}
|
|
(void) fclose(qfi);
|
|
(void) fflush(qfo);
|
|
(void) ftruncate(fileno(qfo),
|
|
(off_t)((highid[type] + 1) * sizeof(struct dqblk)));
|
|
(void) fclose(qfo);
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Check to see if target appears in list of size cnt.
|
|
*/
|
|
static int
|
|
oneof(target, list, cnt)
|
|
const char *target;
|
|
char *list[];
|
|
int cnt;
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < cnt; i++)
|
|
if (strcmp(target, list[i]) == 0)
|
|
return (i);
|
|
return (-1);
|
|
}
|
|
|
|
/*
|
|
* Determine the group identifier for quota files.
|
|
*/
|
|
static int
|
|
getquotagid()
|
|
{
|
|
struct group *gr;
|
|
|
|
if ((gr = getgrnam(quotagroup)) != NULL)
|
|
return (gr->gr_gid);
|
|
return (-1);
|
|
}
|
|
|
|
/*
|
|
* Check to see if a particular quota is to be enabled.
|
|
*/
|
|
static int
|
|
hasquota(fs, type, qfnamep)
|
|
struct fstab *fs;
|
|
int type;
|
|
char **qfnamep;
|
|
{
|
|
char *opt;
|
|
char *cp = NULL;
|
|
static char initname, usrname[100], grpname[100];
|
|
static char buf[BUFSIZ];
|
|
|
|
if (!initname) {
|
|
(void)snprintf(usrname, sizeof(usrname),
|
|
"%s%s", qfextension[USRQUOTA], qfname);
|
|
(void)snprintf(grpname, sizeof(grpname),
|
|
"%s%s", qfextension[GRPQUOTA], qfname);
|
|
initname = 1;
|
|
}
|
|
(void) strlcpy(buf, fs->fs_mntops, sizeof(buf));
|
|
for (opt = strtok(buf, ","); opt; opt = strtok(NULL, ",")) {
|
|
if ((cp = strchr(opt, '=')) != NULL)
|
|
*cp++ = '\0';
|
|
if (type == USRQUOTA && strcmp(opt, usrname) == 0)
|
|
break;
|
|
if (type == GRPQUOTA && strcmp(opt, grpname) == 0)
|
|
break;
|
|
}
|
|
if (!opt)
|
|
return (0);
|
|
if (cp)
|
|
*qfnamep = cp;
|
|
else {
|
|
(void)snprintf(buf, sizeof(buf),
|
|
"%s/%s.%s", fs->fs_file, qfname, qfextension[type]);
|
|
*qfnamep = buf;
|
|
}
|
|
return (1);
|
|
}
|
|
|
|
/*
|
|
* Routines to manage the file usage table.
|
|
*
|
|
* Lookup an id of a specific type.
|
|
*/
|
|
static struct fileusage *
|
|
lookup(id, type)
|
|
u_long id;
|
|
int type;
|
|
{
|
|
struct fileusage *fup;
|
|
|
|
for (fup = fuhead[type][id & (FUHASH-1)]; fup != 0; fup = fup->fu_next)
|
|
if (fup->fu_id == id)
|
|
return (fup);
|
|
return (NULL);
|
|
}
|
|
|
|
/*
|
|
* Add a new file usage id if it does not already exist.
|
|
*/
|
|
static struct fileusage *
|
|
addid(id, type, name)
|
|
u_long id;
|
|
int type;
|
|
const char *name;
|
|
{
|
|
struct fileusage *fup, **fhp;
|
|
int len;
|
|
|
|
if ((fup = lookup(id, type)) != NULL)
|
|
return (fup);
|
|
if (name)
|
|
len = strlen(name);
|
|
else
|
|
len = 10;
|
|
if ((fup = calloc(1, sizeof(*fup) + len)) == NULL)
|
|
err(1, "%s", strerror(errno));
|
|
fhp = &fuhead[type][id & (FUHASH - 1)];
|
|
fup->fu_next = *fhp;
|
|
*fhp = fup;
|
|
fup->fu_id = id;
|
|
if (id > highid[type])
|
|
highid[type] = id;
|
|
if (name)
|
|
memmove(fup->fu_name, name, len + 1);
|
|
else
|
|
(void)sprintf(fup->fu_name, "%lu", id);
|
|
return (fup);
|
|
}
|
|
|
|
/*
|
|
* Special purpose version of ginode used to optimize first pass
|
|
* over all the inodes in numerical order.
|
|
*/
|
|
static ino_t nextino, lastinum, lastvalidinum;
|
|
static long readcnt, readpercg, fullcnt, inobufsize, partialcnt, partialsize;
|
|
static union dinode *inodebuf;
|
|
#define INOBUFSIZE 56*1024 /* size of buffer to read inodes */
|
|
|
|
union dinode *
|
|
getnextinode(inumber)
|
|
ino_t inumber;
|
|
{
|
|
long size;
|
|
daddr_t dblk;
|
|
static union dinode *dp;
|
|
union dinode *ret;
|
|
|
|
if (inumber != nextino++ || inumber > lastvalidinum) {
|
|
errx(1, "bad inode number %d to nextinode", inumber);
|
|
}
|
|
|
|
if (inumber >= lastinum) {
|
|
readcnt++;
|
|
dblk = fsbtodb(&sblock, ino_to_fsba(&sblock, lastinum));
|
|
if (readcnt % readpercg == 0) {
|
|
size = partialsize;
|
|
lastinum += partialcnt;
|
|
} else {
|
|
size = inobufsize;
|
|
lastinum += fullcnt;
|
|
}
|
|
(void)bread(dblk, (caddr_t)inodebuf, size);
|
|
if (needswap) {
|
|
if (is_ufs2)
|
|
swap_dinode2(inodebuf, lastinum - inumber);
|
|
else
|
|
swap_dinode1(inodebuf, lastinum - inumber);
|
|
}
|
|
dp = (union dinode *)inodebuf;
|
|
}
|
|
ret = dp;
|
|
dp = (union dinode *)
|
|
((char *)dp + (is_ufs2 ? DINODE2_SIZE : DINODE1_SIZE));
|
|
return ret;
|
|
}
|
|
|
|
void
|
|
setinodebuf(inum)
|
|
ino_t inum;
|
|
{
|
|
|
|
if (inum % sblock.fs_ipg != 0)
|
|
errx(1, "bad inode number %d to setinodebuf", inum);
|
|
|
|
lastvalidinum = inum + sblock.fs_ipg - 1;
|
|
nextino = inum;
|
|
lastinum = inum;
|
|
readcnt = 0;
|
|
if (inodebuf != NULL)
|
|
return;
|
|
inobufsize = blkroundup(&sblock, INOBUFSIZE);
|
|
fullcnt = inobufsize / (is_ufs2 ? DINODE2_SIZE : DINODE1_SIZE);
|
|
readpercg = sblock.fs_ipg / fullcnt;
|
|
partialcnt = sblock.fs_ipg % fullcnt;
|
|
partialsize = partialcnt * (is_ufs2 ? DINODE2_SIZE : DINODE1_SIZE);
|
|
if (partialcnt != 0) {
|
|
readpercg++;
|
|
} else {
|
|
partialcnt = fullcnt;
|
|
partialsize = inobufsize;
|
|
}
|
|
if (inodebuf == NULL &&
|
|
(inodebuf = malloc((unsigned)inobufsize)) == NULL)
|
|
errx(1, "Cannot allocate space for inode buffer");
|
|
while (nextino < ROOTINO)
|
|
getnextinode(nextino);
|
|
}
|
|
|
|
void
|
|
freeinodebuf()
|
|
{
|
|
|
|
if (inodebuf != NULL)
|
|
free((char *)inodebuf);
|
|
inodebuf = NULL;
|
|
}
|
|
|
|
|
|
static void
|
|
swap_dinode1(union dinode *dp, int n)
|
|
{
|
|
int i;
|
|
struct ufs1_dinode *dp1;
|
|
|
|
dp1 = (struct ufs1_dinode *)&dp->dp1;
|
|
for (i = 0; i < n; i++, dp1++)
|
|
ffs_dinode1_swap(dp1, dp1);
|
|
}
|
|
|
|
static void
|
|
swap_dinode2(union dinode *dp, int n)
|
|
{
|
|
int i;
|
|
struct ufs2_dinode *dp2;
|
|
|
|
dp2 = (struct ufs2_dinode *)&dp->dp2;
|
|
for (i = 0; i < n; i++, dp2++)
|
|
ffs_dinode2_swap(dp2, dp2);
|
|
}
|
|
|
|
/*
|
|
* Read specified disk blocks.
|
|
*/
|
|
static void
|
|
bread(bno, buf, cnt)
|
|
daddr_t bno;
|
|
char *buf;
|
|
long cnt;
|
|
{
|
|
|
|
if (lseek(fi, (off_t)bno * dev_bsize, SEEK_SET) < 0 ||
|
|
read(fi, buf, cnt) != cnt)
|
|
err(1, "block %lld", (long long)bno);
|
|
}
|
|
|
|
void
|
|
infohandler(int sig)
|
|
{
|
|
got_siginfo = 1;
|
|
}
|
|
|