BSD 4_4 release

[unix-history] / usr / src / sbin / fsck / main.c

diff --git a/usr/src/sbin/fsck/main.c b/usr/src/sbin/fsck/main.c
index 4fd8998..e44a86d 100644 (file)
--- a/usr/src/sbin/fsck/main.c
+++ b/usr/src/sbin/fsck/main.c
@@ -1,23 +1,190 @@
+/*
+ * 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
 #ifndef lint

-static char version[] = "@(#)main.c    3.1 (Berkeley) %G%";
-#endif
+static char sccsid[] = "@(#)main.c     8.1 (Berkeley) 6/5/93";
+#endif /* not lint */

 
 #include <sys/param.h>
 
 #include <sys/param.h>

-#include <sys/inode.h>
-#include <sys/fs.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"
 
 #include "fsck.h"
 

-checkfilesys(filesys)
-       char *filesys;
+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;

 {
 
 {
 

-       devname = filesys;
+       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.");
        if (setup(filesys) == 0) {
                if (preen)
                        pfatal("CAN'T CHECK FILE SYSTEM.");

-               return;
+               return (0);

        }
        }

-/* 1: scan inodes tallying blocks used */
+       /*
+        * 1: scan inodes tallying blocks used
+        */

        if (preen == 0) {
                printf("** Last Mounted on %s\n", sblock.fs_fsmnt);
                if (hotroot)
        if (preen == 0) {
                printf("** Last Mounted on %s\n", sblock.fs_fsmnt);
                if (hotroot)


@@ -26,63 +193,126 @@ checkfilesys(filesys)
        }
        pass1();
 
        }
        pass1();
 

-/* 1b: locate first references to duplicates, if any */
-       if (enddup != &duplist[0]) {
+       /*
+        * 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();
        }
 
                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 */
+       /*
+        * 2: traverse directories from root to mark all connected directories
+        */

        if (preen == 0)
                printf("** Phase 2 - Check Pathnames\n");
        pass2();
 
        if (preen == 0)
                printf("** Phase 2 - Check Pathnames\n");
        pass2();
 

-/* 3: scan inodes looking for disconnected directories */
+       /*
+        * 3: scan inodes looking for disconnected directories
+        */

        if (preen == 0)
                printf("** Phase 3 - Check Connectivity\n");
        pass3();
 
        if (preen == 0)
                printf("** Phase 3 - Check Connectivity\n");
        pass3();
 

-/* 4: scan inodes looking for disconnected files; check reference counts */
+       /*
+        * 4: scan inodes looking for disconnected files; check reference counts
+        */

        if (preen == 0)
                printf("** Phase 4 - Check Reference Counts\n");
        pass4();
 
        if (preen == 0)
                printf("** Phase 4 - Check Reference Counts\n");
        pass4();
 

-/* 5: check resource counts in cylinder groups */
+       /*
+        * 5: check and repair resource counts in cylinder groups
+        */

        if (preen == 0)
                printf("** Phase 5 - Check Cyl groups\n");
        pass5();
 
        if (preen == 0)
                printf("** Phase 5 - Check Cyl groups\n");
        pass5();
 

-       if (fixcg) {
-               if (preen == 0)
-                       printf("** Phase 6 - Salvage Cylinder Groups\n");
-               makecg();
-               n_ffree = sblock.fs_cstotal.cs_nffree;
-               n_bfree = sblock.fs_cstotal.cs_nbfree;
+       /*
+        * 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");
+               }

        }
        }

-
-       pwarn("%d files, %d used, %d free (%d frags, %d blocks)\n",
-           n_files, n_blks - howmany(sblock.fs_cssize, sblock.fs_fsize),
-           n_ffree + sblock.fs_frag * n_bfree, n_ffree, n_bfree);
-       if (dfile.mod) {
+       zlnhead = (struct zlncnt *)0;
+       duplist = (struct dups *)0;
+       muldup = (struct dups *)0;
+       inocleanup();
+       if (fsmodified) {

                (void)time(&sblock.fs_time);
                sbdirty();
        }
                (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);
        ckfini();
        free(blockmap);

-       free(freemap);

        free(statemap);
        free((char *)lncntp);
        free(statemap);
        free((char *)lncntp);

-       if (!dfile.mod)
-               return;
-       if (!preen) {
+       if (!fsmodified)
+               return (0);
+       if (!preen)

                printf("\n***** FILE SYSTEM WAS MODIFIED *****\n");
                printf("\n***** FILE SYSTEM WAS MODIFIED *****\n");

-               if (hotroot)
-                       printf("\n***** REBOOT UNIX *****\n");
-       }

        if (hotroot) {
        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.exflags = 0;
+                               args.exroot = 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();
                sync();

-               exit(4);
+               return (4);

        }
        }

+       return (0);

 }
 }