break up into managable pieces

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

#ifndef lint
static char version[] = "@(#)main.c     3.1 (Berkeley) %G%";
#endif

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

checkfilesys(filesys)
       char *filesys;
{

       devname = filesys;
       if (setup(filesys) == 0) {
               if (preen)
                       pfatal("CAN'T CHECK FILE SYSTEM.");
               return;
       }
/* 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 (enddup != &duplist[0]) {
               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 resource counts in cylinder groups */
       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;
       }

       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) {
               (void)time(&sblock.fs_time);
               sbdirty();
       }
       ckfini();
       free(blockmap);
       free(freemap);
       free(statemap);
       free((char *)lncntp);
       if (!dfile.mod)
               return;
       if (!preen) {
               printf("\n***** FILE SYSTEM WAS MODIFIED *****\n");
               if (hotroot)
                       printf("\n***** REBOOT UNIX *****\n");
       }
       if (hotroot) {
               sync();
               exit(4);
       }
}