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-rw-r--r--sbin/fsck/main.c318
1 files changed, 318 insertions, 0 deletions
diff --git a/sbin/fsck/main.c b/sbin/fsck/main.c
new file mode 100644
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--- /dev/null
+++ b/sbin/fsck/main.c
@@ -0,0 +1,318 @@
+/*
+ * 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. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. 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.
+ */
+
+#ifndef lint
+static char copyright[] =
+"@(#) Copyright (c) 1980, 1986, 1993\n\
+ The Regents of the University of California. All rights reserved.\n";
+#endif /* not lint */
+
+#ifndef lint
+static char sccsid[] = "@(#)main.c 8.2 (Berkeley) 1/23/94";
+#endif /* not lint */
+
+#include <sys/param.h>
+#include <sys/time.h>
+#include <sys/mount.h>
+#include <ufs/ufs/dinode.h>
+#include <ufs/ffs/fs.h>
+#include <fstab.h>
+#include <stdlib.h>
+#include <string.h>
+#include <ctype.h>
+#include <stdio.h>
+#include "fsck.h"
+
+void catch(), catchquit(), voidquit();
+int returntosingle;
+
+main(argc, argv)
+ int argc;
+ char *argv[];
+{
+ int ch;
+ int ret, maxrun = 0;
+ extern int docheck(), checkfilesys();
+ extern char *optarg, *blockcheck();
+ extern int optind;
+
+ sync();
+ while ((ch = getopt(argc, argv, "dpnNyYb:c:l:m:")) != EOF) {
+ switch (ch) {
+ case 'p':
+ preen++;
+ break;
+
+ case 'b':
+ bflag = argtoi('b', "number", optarg, 10);
+ printf("Alternate super block location: %d\n", bflag);
+ break;
+
+ case 'c':
+ cvtlevel = argtoi('c', "conversion level", optarg, 10);
+ break;
+
+ case 'd':
+ debug++;
+ break;
+
+ case 'l':
+ maxrun = argtoi('l', "number", optarg, 10);
+ break;
+
+ case 'm':
+ lfmode = argtoi('m', "mode", optarg, 8);
+ if (lfmode &~ 07777)
+ errexit("bad mode to -m: %o\n", lfmode);
+ printf("** lost+found creation mode %o\n", lfmode);
+ break;
+
+ case 'n':
+ case 'N':
+ nflag++;
+ yflag = 0;
+ break;
+
+ case 'y':
+ case 'Y':
+ yflag++;
+ nflag = 0;
+ break;
+
+ default:
+ errexit("%c option?\n", ch);
+ }
+ }
+ argc -= optind;
+ argv += optind;
+ if (signal(SIGINT, SIG_IGN) != SIG_IGN)
+ (void)signal(SIGINT, catch);
+ if (preen)
+ (void)signal(SIGQUIT, catchquit);
+ if (argc) {
+ while (argc-- > 0)
+ (void)checkfilesys(blockcheck(*argv++), 0, 0L, 0);
+ exit(0);
+ }
+ ret = checkfstab(preen, maxrun, docheck, checkfilesys);
+ if (returntosingle)
+ exit(2);
+ exit(ret);
+}
+
+argtoi(flag, req, str, base)
+ int flag;
+ char *req, *str;
+ int base;
+{
+ char *cp;
+ int ret;
+
+ ret = (int)strtol(str, &cp, base);
+ if (cp == str || *cp)
+ errexit("-%c flag requires a %s\n", flag, req);
+ return (ret);
+}
+
+/*
+ * Determine whether a filesystem should be checked.
+ */
+docheck(fsp)
+ register struct fstab *fsp;
+{
+
+ if (strcmp(fsp->fs_vfstype, "ufs") ||
+ (strcmp(fsp->fs_type, FSTAB_RW) &&
+ strcmp(fsp->fs_type, FSTAB_RO)) ||
+ fsp->fs_passno == 0)
+ return (0);
+ return (1);
+}
+
+/*
+ * Check the specified filesystem.
+ */
+/* ARGSUSED */
+checkfilesys(filesys, mntpt, auxdata, child)
+ char *filesys, *mntpt;
+ long auxdata;
+{
+ daddr_t n_ffree, n_bfree;
+ struct dups *dp;
+ struct zlncnt *zlnp;
+ int cylno;
+
+ if (preen && child)
+ (void)signal(SIGQUIT, voidquit);
+ cdevname = filesys;
+ if (debug && preen)
+ pwarn("starting\n");
+ if (setup(filesys) == 0) {
+ if (preen)
+ pfatal("CAN'T CHECK FILE SYSTEM.");
+ return (0);
+ }
+ /*
+ * 1: scan inodes tallying blocks used
+ */
+ if (preen == 0) {
+ printf("** Last Mounted on %s\n", sblock.fs_fsmnt);
+ if (hotroot)
+ printf("** Root file system\n");
+ printf("** Phase 1 - Check Blocks and Sizes\n");
+ }
+ pass1();
+
+ /*
+ * 1b: locate first references to duplicates, if any
+ */
+ if (duplist) {
+ if (preen)
+ pfatal("INTERNAL ERROR: dups with -p");
+ printf("** Phase 1b - Rescan For More DUPS\n");
+ pass1b();
+ }
+
+ /*
+ * 2: traverse directories from root to mark all connected directories
+ */
+ if (preen == 0)
+ printf("** Phase 2 - Check Pathnames\n");
+ pass2();
+
+ /*
+ * 3: scan inodes looking for disconnected directories
+ */
+ if (preen == 0)
+ printf("** Phase 3 - Check Connectivity\n");
+ pass3();
+
+ /*
+ * 4: scan inodes looking for disconnected files; check reference counts
+ */
+ if (preen == 0)
+ printf("** Phase 4 - Check Reference Counts\n");
+ pass4();
+
+ /*
+ * 5: check and repair resource counts in cylinder groups
+ */
+ if (preen == 0)
+ printf("** 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("%ld files, %ld used, %ld free ",
+ n_files, n_blks, n_ffree + sblock.fs_frag * n_bfree);
+ printf("(%ld frags, %ld blocks, %d.%d%% fragmentation)\n",
+ n_ffree, n_bfree, (n_ffree * 100) / sblock.fs_dsize,
+ ((n_ffree * 1000 + sblock.fs_dsize / 2) / sblock.fs_dsize) % 10);
+ if (debug &&
+ (n_files -= maxino - ROOTINO - sblock.fs_cstotal.cs_nifree))
+ printf("%ld files missing\n", 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("%ld blocks missing\n", n_blks);
+ if (duplist != NULL) {
+ printf("The following duplicate blocks remain:");
+ for (dp = duplist; dp; dp = dp->next)
+ printf(" %ld,", dp->dup);
+ printf("\n");
+ }
+ if (zlnhead != NULL) {
+ printf("The following zero link count inodes remain:");
+ for (zlnp = zlnhead; zlnp; zlnp = zlnp->next)
+ printf(" %lu,", zlnp->zlncnt);
+ printf("\n");
+ }
+ }
+ zlnhead = (struct zlncnt *)0;
+ duplist = (struct dups *)0;
+ muldup = (struct dups *)0;
+ inocleanup();
+ if (fsmodified) {
+ (void)time(&sblock.fs_time);
+ sbdirty();
+ }
+ if (cvtlevel && sblk.b_dirty) {
+ /*
+ * Write out the duplicate super blocks
+ */
+ for (cylno = 0; cylno < sblock.fs_ncg; cylno++)
+ bwrite(fswritefd, (char *)&sblock,
+ fsbtodb(&sblock, cgsblock(&sblock, cylno)), SBSIZE);
+ }
+ ckfini();
+ free(blockmap);
+ free(statemap);
+ free((char *)lncntp);
+ if (!fsmodified)
+ return (0);
+ if (!preen)
+ printf("\n***** FILE SYSTEM WAS MODIFIED *****\n");
+ if (hotroot) {
+ struct statfs stfs_buf;
+ /*
+ * We modified the root. Do a mount update on
+ * it, unless it is read-write, so we can continue.
+ */
+ if (statfs("/", &stfs_buf) == 0) {
+ long flags = stfs_buf.f_flags;
+ struct ufs_args args;
+ int ret;
+
+ if (flags & MNT_RDONLY) {
+ args.fspec = 0;
+ args.export.ex_flags = 0;
+ args.export.ex_root = 0;
+ flags |= MNT_UPDATE | MNT_RELOAD;
+ ret = mount(MOUNT_UFS, "/", flags, &args);
+ if (ret == 0)
+ return(0);
+ }
+ }
+ if (!preen)
+ printf("\n***** REBOOT NOW *****\n");
+ sync();
+ return (4);
+ }
+ return (0);
+}
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