7578c6ab98
affect current systems until fsck is modified to use these new facilities. To try out this change, set the fsck passno to zero in /etc/fstab to cause the filesystem to be mounted without running fsck, then run `fsck_ffs -p -B <filesystem>' after the system has been brought up multiuser to run a background cleanup on <filesystem>. Note that the <filesystem> in question must have soft updates enabled.
454 lines
11 KiB
C
454 lines
11 KiB
C
/*
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* Copyright (c) 1980, 1986, 1993
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* The Regents of the University of California. All rights reserved.
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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. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. 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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#ifndef lint
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static const char copyright[] =
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"@(#) Copyright (c) 1980, 1986, 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[] = "@(#)main.c 8.6 (Berkeley) 5/14/95";
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#endif
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static const char rcsid[] =
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"$FreeBSD$";
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#endif /* not lint */
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#include <sys/param.h>
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#include <sys/stat.h>
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#include <sys/time.h>
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#include <sys/mount.h>
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#include <sys/resource.h>
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#include <ufs/ufs/dinode.h>
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#include <ufs/ufs/ufsmount.h>
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#include <ufs/ffs/fs.h>
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#include <err.h>
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#include <errno.h>
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#include <fstab.h>
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#include <paths.h>
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#include "fsck.h"
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int returntosingle;
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static void usage __P((void));
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static int argtoi __P((int flag, char *req, char *str, int base));
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static int docheck __P((struct fstab *fsp));
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static int checkfilesys __P((char *filesys, char *mntpt, long auxdata,
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int child));
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static struct statfs *getmntpt __P((const char *));
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int main __P((int argc, char *argv[]));
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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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int ch;
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struct rlimit rlimit;
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int ret = 0;
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sync();
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skipclean = 1;
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while ((ch = getopt(argc, argv, "b:Bc:dfm:npy")) != -1) {
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switch (ch) {
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case 'b':
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skipclean = 0;
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bflag = argtoi('b', "number", optarg, 10);
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printf("Alternate super block location: %d\n", bflag);
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break;
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case 'B':
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bkgrdflag = 1;
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break;
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case 'c':
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skipclean = 0;
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cvtlevel = argtoi('c', "conversion level", optarg, 10);
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break;
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case 'd':
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debug++;
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break;
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case 'f':
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skipclean = 0;
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break;
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case 'm':
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lfmode = argtoi('m', "mode", optarg, 8);
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if (lfmode &~ 07777)
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errx(EEXIT, "bad mode to -m: %o", lfmode);
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printf("** lost+found creation mode %o\n", lfmode);
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break;
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case 'n':
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nflag++;
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yflag = 0;
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break;
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case 'p':
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preen++;
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break;
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case 'y':
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yflag++;
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nflag = 0;
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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)
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usage();
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if (signal(SIGINT, SIG_IGN) != SIG_IGN)
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(void)signal(SIGINT, catch);
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if (preen)
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(void)signal(SIGQUIT, catchquit);
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signal(SIGINFO, infohandler);
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/*
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* Push up our allowed memory limit so we can cope
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* with huge filesystems.
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*/
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if (getrlimit(RLIMIT_DATA, &rlimit) == 0) {
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rlimit.rlim_cur = rlimit.rlim_max;
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(void)setrlimit(RLIMIT_DATA, &rlimit);
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}
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while (argc-- > 0)
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(void)checkfilesys(blockcheck(*argv++), 0, 0L, 0);
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if (returntosingle)
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ret = 2;
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exit(ret);
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}
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static int
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argtoi(flag, req, str, base)
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int flag;
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char *req, *str;
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int base;
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{
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char *cp;
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int ret;
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ret = (int)strtol(str, &cp, base);
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if (cp == str || *cp)
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errx(EEXIT, "-%c flag requires a %s", flag, req);
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return (ret);
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}
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/*
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* Check the specified filesystem.
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*/
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/* ARGSUSED */
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static int
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checkfilesys(filesys, mntpt, auxdata, child)
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char *filesys, *mntpt;
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long auxdata;
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int child;
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{
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ufs_daddr_t n_ffree, n_bfree;
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struct ufs_args args;
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struct dups *dp;
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struct statfs *mntp;
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struct zlncnt *zlnp;
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ufs_daddr_t blks;
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ufs_daddr_t files;
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int cylno;
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if (preen && child)
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(void)signal(SIGQUIT, voidquit);
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cdevname = filesys;
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if (debug && preen)
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pwarn("starting\n");
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/*
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* If we are to do a background check:
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* Get the mount point information of the filesystem
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* create snapshot file
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* return created snapshot file
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* if not found, clear bkgrdflag and proceed with normal fsck
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*/
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mntp = getmntpt(filesys);
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if (bkgrdflag) {
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if (mntp == NULL) {
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bkgrdflag = 0;
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pwarn("NOT MOUNTED, CANNOT RUN IN BACKGROUND\n");
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} else if ((mntp->f_flags & MNT_SOFTDEP) == 0) {
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bkgrdflag = 0;
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pwarn("NOT USING SOFT UPDATES, CANNOT RUN IN BACKGROUND\n");
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} else if ((mntp->f_flags & MNT_RDONLY) != 0) {
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bkgrdflag = 0;
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pwarn("MOUNTED READ-ONLY, CANNOT RUN IN BACKGROUND\n");
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} else {
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snprintf(snapname, sizeof snapname, "%s/.fsck_snapshot",
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mntp->f_mntonname);
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args.fspec = snapname;
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while (mount("ffs", mntp->f_mntonname,
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mntp->f_flags | MNT_UPDATE | MNT_SNAPSHOT,
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&args) < 0) {
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if (errno == EEXIST && unlink(snapname) == 0)
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continue;
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bkgrdflag = 0;
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pwarn("CANNOT CREATE SNAPSHOT %s: %s\n",
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snapname, strerror(errno));
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break;
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}
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if (bkgrdflag != 0)
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filesys = snapname;
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}
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}
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switch (setup(filesys)) {
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case 0:
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if (preen)
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pfatal("CAN'T CHECK FILE SYSTEM.");
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return (0);
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case -1:
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pwarn("clean, %ld free ", sblock.fs_cstotal.cs_nffree +
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sblock.fs_frag * sblock.fs_cstotal.cs_nbfree);
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printf("(%d frags, %d blocks, %.1f%% fragmentation)\n",
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sblock.fs_cstotal.cs_nffree, sblock.fs_cstotal.cs_nbfree,
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sblock.fs_cstotal.cs_nffree * 100.0 / sblock.fs_dsize);
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return (0);
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}
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/*
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* Cleared if any questions answered no. Used to decide if
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* the superblock should be marked clean.
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*/
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resolved = 1;
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/*
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* 1: scan inodes tallying blocks used
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*/
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if (preen == 0) {
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printf("** Last Mounted on %s\n", sblock.fs_fsmnt);
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if (mntp != NULL && mntp->f_flags & MNT_ROOTFS)
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printf("** Root file system\n");
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printf("** Phase 1 - Check Blocks and Sizes\n");
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}
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pass1();
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/*
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* 1b: locate first references to duplicates, if any
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*/
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if (duplist) {
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if (preen || usedsoftdep)
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pfatal("INTERNAL ERROR: dups with -p");
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printf("** Phase 1b - Rescan For More DUPS\n");
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pass1b();
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}
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/*
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* 2: traverse directories from root to mark all connected directories
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*/
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if (preen == 0)
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printf("** Phase 2 - Check Pathnames\n");
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pass2();
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/*
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* 3: scan inodes looking for disconnected directories
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*/
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if (preen == 0)
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printf("** Phase 3 - Check Connectivity\n");
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pass3();
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/*
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* 4: scan inodes looking for disconnected files; check reference counts
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*/
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if (preen == 0)
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printf("** Phase 4 - Check Reference Counts\n");
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pass4();
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/*
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* 5: check and repair resource counts in cylinder groups
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*/
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if (preen == 0)
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printf("** Phase 5 - Check Cyl groups\n");
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pass5();
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/*
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* print out summary statistics
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*/
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n_ffree = sblock.fs_cstotal.cs_nffree;
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n_bfree = sblock.fs_cstotal.cs_nbfree;
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files = maxino - ROOTINO - sblock.fs_cstotal.cs_nifree - n_files;
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blks = n_blks +
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sblock.fs_ncg * (cgdmin(&sblock, 0) - cgsblock(&sblock, 0));
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blks += cgsblock(&sblock, 0) - cgbase(&sblock, 0);
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blks += howmany(sblock.fs_cssize, sblock.fs_fsize);
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blks = maxfsblock - (n_ffree + sblock.fs_frag * n_bfree) - blks;
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if (bkgrdflag && (files > 0 || blks > 0)) {
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countdirs = sblock.fs_cstotal.cs_ndir - countdirs;
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pwarn("Reclaimed: %d directories, %d files, %d fragments\n",
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countdirs, files - countdirs, blks);
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}
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pwarn("%ld files, %ld used, %ld free ",
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n_files, n_blks, n_ffree + sblock.fs_frag * n_bfree);
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printf("(%d frags, %d blocks, %.1f%% fragmentation)\n",
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n_ffree, n_bfree, n_ffree * 100.0 / sblock.fs_dsize);
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if (debug) {
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if (files < 0)
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printf("%d inodes missing\n", -files);
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if (blks < 0)
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printf("%d blocks missing\n", -blks);
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if (duplist != NULL) {
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printf("The following duplicate blocks remain:");
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for (dp = duplist; dp; dp = dp->next)
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printf(" %d,", dp->dup);
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printf("\n");
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}
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if (zlnhead != NULL) {
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printf("The following zero link count inodes remain:");
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for (zlnp = zlnhead; zlnp; zlnp = zlnp->next)
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printf(" %u,", zlnp->zlncnt);
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printf("\n");
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}
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}
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zlnhead = (struct zlncnt *)0;
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duplist = (struct dups *)0;
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muldup = (struct dups *)0;
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inocleanup();
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if (fsmodified) {
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sblock.fs_time = time(NULL);
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sbdirty();
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}
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if (cvtlevel && sblk.b_dirty) {
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/*
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* Write out the duplicate super blocks
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*/
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for (cylno = 0; cylno < sblock.fs_ncg; cylno++)
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bwrite(fswritefd, (char *)&sblock,
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fsbtodb(&sblock, cgsblock(&sblock, cylno)), SBSIZE);
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}
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if (rerun)
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resolved = 0;
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/*
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* Check to see if the filesystem is mounted read-write.
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*/
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if (bkgrdflag == 0 && mntp != NULL && (mntp->f_flags & MNT_RDONLY) == 0)
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resolved = 0;
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ckfini(resolved);
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for (cylno = 0; cylno < sblock.fs_ncg; cylno++)
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if (inostathead[cylno].il_stat != NULL)
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free((char *)inostathead[cylno].il_stat);
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free((char *)inostathead);
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inostathead = NULL;
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if (fsmodified && !preen)
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printf("\n***** FILE SYSTEM WAS MODIFIED *****\n");
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if (rerun)
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printf("\n***** PLEASE RERUN FSCK *****\n");
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if (mntp != NULL) {
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struct ufs_args args;
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int ret;
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/*
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* We modified a mounted filesystem. Do a mount update on
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* it unless it is read-write, so we can continue using it
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* as safely as possible.
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*/
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if (mntp->f_flags & MNT_RDONLY) {
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args.fspec = 0;
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args.export.ex_flags = 0;
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args.export.ex_root = 0;
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ret = mount("ufs", mntp->f_mntonname,
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mntp->f_flags | MNT_UPDATE | MNT_RELOAD, &args);
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if (ret == 0)
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return (0);
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pwarn("mount reload of '%s' failed: %s\n\n",
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mntp->f_mntonname, strerror(errno));
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}
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if (!fsmodified)
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return (0);
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if (!preen)
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printf("\n***** REBOOT NOW *****\n");
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sync();
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return (4);
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}
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return (0);
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}
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/*
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* Get the directory that the device is mounted on.
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*/
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static struct statfs *
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getmntpt(name)
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const char *name;
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{
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struct stat devstat, mntdevstat;
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char device[sizeof(_PATH_DEV) - 1 + MNAMELEN];
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char *devname;
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struct statfs *mntbuf;
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int i, mntsize;
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if (stat(name, &devstat) != 0 ||
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!(S_ISCHR(devstat.st_mode) || S_ISBLK(devstat.st_mode)))
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return (NULL);
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mntsize = getmntinfo(&mntbuf, MNT_NOWAIT);
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for (i = 0; i < mntsize; i++) {
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if (strcmp(mntbuf[i].f_fstypename, "ufs") != 0)
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continue;
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devname = mntbuf[i].f_mntfromname;
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if (*devname != '/') {
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strcpy(device, _PATH_DEV);
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strcat(device, devname);
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devname = device;
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}
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if (stat(devname, &mntdevstat) == 0 &&
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mntdevstat.st_rdev == devstat.st_rdev)
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return (&mntbuf[i]);
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}
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return (NULL);
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}
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static void
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usage()
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{
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extern char *__progname;
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(void) fprintf(stderr,
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"Usage: %s [-dfnpy] [-B be|le] [-b block] [-c level] [-m mode] "
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"filesystem ...\n",
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__progname);
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exit(1);
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}
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