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2f0e3614ae
NetBSD/sbin/fsck_ffs/main.c
jmmv 2a3e5eeb7c Apply the NFS exports list rototill patch: 
- Remove all NFS related stuff from file system specific code.
- Drop the vfs_checkexp hook and generalize it in the new nfs_check_export
  function, thus removing redundancy from all file systems.
- Move all NFS export-related stuff from kern/vfs_subr.c to the new
  file sys/nfs/nfs_export.c.  The former was becoming large and its code
  is always compiled, regardless of the build options.  Using the latter,
  the code is only compiled in when NFSSERVER is enabled.  While doing this,
  also make some functions in nfs_subs.c conditional to NFSSERVER.
- Add a new command in nfssvc(2), called NFSSVC_SETEXPORTSLIST, that takes a
  path and a set of export entries.  At the moment it can only clear the
  exports list or append entries, one by one, but it is done in a way that
  allows setting the whole set of entries atomically in the future (see the
  comment in mountd_set_exports_list or in doc/TODO).
- Change mountd(8) to use the nfssvc(2) system call instead of mount(2) so
  that it becomes file system agnostic.  In fact, all this whole thing was
  done to remove a 'XXX' block from this utility!
- Change the mount*, newfs and fsck* userland utilities to not deal with NFS
  exports initialization; done internally by the kernel when initializing
  the NFS support for each file system.
- Implement an interface for VFS (called VFS hooks) so that several kernel
  subsystems can run arbitrary code upon receipt of specific VFS events.
  At the moment, this only provides support for unmount and is used to
  destroy NFS exports lists from the file systems being unmounted, though it
  has room for extension.

Thanks go to yamt@, chs@, thorpej@, wrstuden@ and others for their comments
and advice in the development of this patch.
2005-09-23 12:10:31 +00:00

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/* $NetBSD: main.c,v 1.60 2005/09/23 12:10:34 jmmv Exp $ */
/*
* Copyright (c) 1980, 1986, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
#ifndef lint
__COPYRIGHT("@(#) Copyright (c) 1980, 1986, 1993\n\
The Regents of the University of California. All rights reserved.\n");
#endif /* not lint */
#ifndef lint
#if 0
static char sccsid[] = "@(#)main.c 8.6 (Berkeley) 5/14/95";
#else
__RCSID("$NetBSD: main.c,v 1.60 2005/09/23 12:10:34 jmmv Exp $");
#endif
#endif /* not lint */
#include <sys/param.h>
#include <sys/time.h>
#include <sys/mount.h>
#include <sys/resource.h>
#include <ufs/ufs/dinode.h>
#include <ufs/ufs/ufsmount.h>
#include <ufs/ffs/fs.h>
#include <ufs/ffs/ffs_extern.h>
#include <ctype.h>
#include <err.h>
#include <fstab.h>
#include <string.h>
#include <time.h>
#include <ctype.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include "fsck.h"
#include "extern.h"
#include "fsutil.h"
int returntosingle;
int progress = 0;
static int argtoi(int, const char *, const char *, int);
static int checkfilesys(const char *, char *, long, int);
static void usage(void);
int
main(int argc, char *argv[])
{
struct rlimit r;
int ch;
int ret = 0;
if (getrlimit(RLIMIT_DATA, &r) == 0) {
r.rlim_cur = r.rlim_max;
(void) setrlimit(RLIMIT_DATA, &r);
}
sync();
skipclean = 1;
markclean = 1;
forceimage = 0;
endian = 0;
isappleufs = 0;
while ((ch = getopt(argc, argv, "aB:b:c:dFfm:npPqy")) != -1) {
switch (ch) {
case 'a':
isappleufs = 1;
break;
case 'B':
if (strcmp(optarg, "be") == 0)
endian = BIG_ENDIAN;
else if (strcmp(optarg, "le") == 0)
endian = LITTLE_ENDIAN;
else usage();
break;
case 'b':
skipclean = 0;
bflag = argtoi('b', "number", optarg, 10);
printf("Alternate super block location: %d\n", bflag);
break;
case 'c':
skipclean = 0;
cvtlevel = argtoi('c', "conversion level", optarg, 10);
if (cvtlevel > 4) {
cvtlevel = 4;
warnx("Using maximum conversion level of %d\n",cvtlevel);
}
break;
case 'd':
debug++;
break;
case 'F':
forceimage = 1;
break;
case 'f':
skipclean = 0;
break;
case 'm':
lfmode = argtoi('m', "mode", optarg, 8);
if (lfmode &~ 07777)
errx(EEXIT, "bad mode to -m: %o", lfmode);
printf("** lost+found creation mode %o\n", lfmode);
break;
case 'n':
nflag++;
yflag = 0;
break;
case 'p':
preen++;
break;
case 'P':
progress = 1;
break;
case 'q':
quiet++;
break;
case 'y':
yflag++;
nflag = 0;
break;
default:
usage();
}
}
argc -= optind;
argv += optind;
if (!argc)
usage();
if (debug)
progress = 0;
if (signal(SIGINT, SIG_IGN) != SIG_IGN)
(void)signal(SIGINT, catch);
if (preen)
(void)signal(SIGQUIT, catchquit);
#ifdef PROGRESS
if (progress) {
progress_ttywidth(0);
(void)signal(SIGWINCH, progress_ttywidth);
}
#endif /* ! PROGRESS */
signal(SIGINFO, infohandler);
while (argc-- > 0) {
const char *path = blockcheck(*argv);
if (path == NULL)
pfatal("Can't check %s\n", *argv);
else
(void)checkfilesys(blockcheck(*argv), 0, 0L, 0);
argv++;
}
if (returntosingle)
ret = 2;
exit(ret);
}
static int
argtoi(int flag, const char *req, const char *str, int base)
{
char *cp;
int ret;
ret = (int)strtol(str, &cp, base);
if (cp == str || *cp)
errx(EEXIT, "-%c flag requires a %s", flag, req);
return (ret);
}
/*
* Check the specified filesystem.
*/
/* ARGSUSED */
static int
checkfilesys(const char *filesys, char *mntpt, long auxdata, int child)
{
daddr_t n_ffree, n_bfree;
struct dups *dp;
struct zlncnt *zlnp;
int cylno;
#ifdef LITE2BORKEN
int flags;
#endif
#ifdef PROGRESS
off_t progress_total = 0;
#endif /* PROGRESS */
if (preen && child)
(void)signal(SIGQUIT, voidquit);
setcdevname(filesys, preen);
if (debug && preen)
pwarn("starting\n");
switch (setup(filesys)) {
case 0:
if (preen)
pfatal("CAN'T CHECK FILE SYSTEM.");
/* fall through */
case -1:
return (0);
}
/*
* Cleared if any questions answered no. Used to decide if
* the superblock should be marked clean.
*/
resolved = 1;
#ifdef PROGRESS
/*
* Pass 1, Pass 4, and Pass 5 all iterate over cylinder
* groups. Account for those now. We'll never need to
* add in Pass 1b, since that pass is never executed when
* preening.
*
* Pass 2 and Pass 3 iterate over directory inodes, but we
* don't know how many of those exist until after Pass 1.
* We'll add those in after Pass 1 has completed.
*/
if (preen)
progress_total += sblock->fs_ncg * 3;
#endif /* PROGRESS */
/*
* 1: scan inodes tallying blocks used
*/
if (preen == 0) {
pwarn("** Last Mounted on %s\n", sblock->fs_fsmnt);
if (hotroot())
pwarn("** Root file system\n");
pwarn("** Phase 1 - Check Blocks and Sizes\n");
}
pass1();
#ifdef PROGRESS
/* Account for number of directory inodes (used twice). */
if (preen)
progress_total += inplast * 2;
progress_switch(progress);
progress_init(progress_total);
#endif /* PROGRESS */
/*
* 1b: locate first references to duplicates, if any
*/
if (duplist) {
if (preen)
pfatal("INTERNAL ERROR: dups with -p\n");
if (usedsoftdep)
pfatal("INTERNAL ERROR: dups with softdep\n");
pwarn("** Phase 1b - Rescan For More DUPS\n");
pass1b();
}
/*
* 2: traverse directories from root to mark all connected directories
*/
if (preen == 0)
pwarn("** Phase 2 - Check Pathnames\n");
pass2();
/*
* 3: scan inodes looking for disconnected directories
*/
if (preen == 0)
pwarn("** Phase 3 - Check Connectivity\n");
pass3();
/*
* 4: scan inodes looking for disconnected files; check reference counts
*/
if (preen == 0)
pwarn("** Phase 4 - Check Reference Counts\n");
pass4();
/*
* 5: check and repair resource counts in cylinder groups
*/
if (preen == 0)
pwarn("** Phase 5 - Check Cyl groups\n");
pass5();
/*
* print out summary statistics
*/
n_ffree = sblock->fs_cstotal.cs_nffree;
n_bfree = sblock->fs_cstotal.cs_nbfree;
pwarn("%llu files, %lld used, %lld free ",
(unsigned long long)n_files, (long long)n_blks,
(long long)(n_ffree + sblock->fs_frag * n_bfree));
printf("(%lld frags, %lld blocks, %lld.%lld%% fragmentation)\n",
(long long)n_ffree, (long long)n_bfree,
(long long)(n_ffree * 100 / (daddr_t)sblock->fs_dsize),
(long long)(((n_ffree * 1000 + (daddr_t)sblock->fs_dsize / 2)
/ (daddr_t)sblock->fs_dsize) % 10));
if (debug &&
(n_files -= maxino - ROOTINO - sblock->fs_cstotal.cs_nifree))
printf("%llu files missing\n", (unsigned long long)n_files);
if (debug) {
n_blks += sblock->fs_ncg *
(cgdmin(sblock, 0) - cgsblock(sblock, 0));
n_blks += cgsblock(sblock, 0) - cgbase(sblock, 0);
n_blks += howmany(sblock->fs_cssize, sblock->fs_fsize);
if (n_blks -= maxfsblock - (n_ffree + sblock->fs_frag * n_bfree))
printf("%lld blocks missing\n", (long long)n_blks);
if (duplist != NULL) {
printf("The following duplicate blocks remain:");
for (dp = duplist; dp; dp = dp->next)
printf(" %lld,", (long long)dp->dup);
printf("\n");
}
if (zlnhead != NULL) {
printf("The following zero link count inodes remain:");
for (zlnp = zlnhead; zlnp; zlnp = zlnp->next)
printf(" %llu,",
(unsigned long long)zlnp->zlncnt);
printf("\n");
}
}
zlnhead = (struct zlncnt *)0;
duplist = (struct dups *)0;
muldup = (struct dups *)0;
inocleanup();
if (fsmodified) {
sblock->fs_time = time(NULL);
sbdirty();
}
if (rerun)
markclean = 0;
#if LITE2BORKEN
if (!hotroot()) {
ckfini();
} else {
struct statvfs stfs_buf;
/*
* Check to see if root is mounted read-write.
*/
if (statvfs("/", &stfs_buf) == 0)
flags = stfs_buf.f_flag;
else
flags = 0;
if (markclean)
markclean = flags & MNT_RDONLY;
ckfini();
}
#else
ckfini();
#endif
for (cylno = 0; cylno < sblock->fs_ncg; cylno++)
if (inostathead[cylno].il_stat != NULL)
free(inostathead[cylno].il_stat);
free(inostathead);
inostathead = NULL;
if (!resolved || rerun) {
pwarn("\n***** UNRESOLVED INCONSISTENCIES REMAIN *****\n");
returntosingle = 1;
}
if (!fsmodified)
return (0);
if (!preen)
pwarn("\n***** FILE SYSTEM WAS MODIFIED *****\n");
if (rerun)
pwarn("\n***** PLEASE RERUN FSCK *****\n");
if (hotroot()) {
struct statvfs stfs_buf;
/*
* We modified the root. Do a mount update on
* it, unless it is read-write, so we can continue.
*/
if (statvfs("/", &stfs_buf) == 0) {
long flags = stfs_buf.f_flag;
struct ufs_args args;
int ret;
if (flags & MNT_RDONLY) {
args.fspec = 0;
flags |= MNT_UPDATE | MNT_RELOAD;
ret = mount(MOUNT_FFS, "/", flags, &args);
if (ret == 0)
return(0);
}
}
if (!preen)
pwarn("\n***** REBOOT NOW *****\n");
sync();
return (4);
}
return (0);
}
static void
usage(void)
{
(void) fprintf(stderr,
"usage: %s [-adFfnPpqy] [-B be|le] [-b block] [-c level] [-m mode]"
" filesystem ...\n",
getprogname());
exit(1);
}
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