/*****************************************************************************************
 Copyright (c) 2002-2004 The UbixOS Project
 All rights reserved.

 Redistribution and use in source and binary forms, with or without modification, are
 permitted provided that the following conditions are met:

 Redistributions of source code must retain the above copyright notice, this list of
 conditions, the following disclaimer and the list of authors.  Redistributions in binary
 form must reproduce the above copyright notice, this list of conditions, the following
 disclaimer and the list of authors in the documentation and/or other materials provided
 with the distribution. Neither the name of the UbixOS Project 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 COPYRIGHT HOLDERS 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 COPYRIGHT OWNER 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.

 $Id$

*****************************************************************************************/

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>

#include "ubixfs.h"
#include "superblock.h"
#include "inode.h"
#include "btreeheader.h"

static void usage() {
  fprintf(stderr, "usage: format [-q] disk [slice]\n");
  exit (1);
  }
  
int main(int argc,char **argv) {
  FILE *fd;
  struct ubixDiskLabel *d = (struct ubixDiskLabel *)malloc(512);
  ubixfs_superBlock    *sb = (ubixfs_superBlock *)malloc(sizeof(ubixfs_superBlock));
  int ch            = 0x0;
  int i             = 0x0;
  int x             = 0x0;
  short batSize     = 0x0;
  u_int32_t blocks  = 0x0;
  u_int32_t batSect = 0x0;
  bTreeHeader * bth = (bTreeHeader *)malloc(4096);
  char sector[512];
  char q = 0x0;

  while ((ch = getopt(argc, argv, "q")) != -1) {
    switch (ch) {
      case 'q':
        q = 0x1;
        break;
      default:
        usage();
      }
    }

  argc -= optind;
  argv += optind;

  if (argc < 1)
    usage();

  printf("Ubix Disk Format Utility Version 1.0\n");
  printf("(c) 2004 Ubix Corp                \n\n");
 
  fd = fopen(argv[0],"wb+");

  if (fd == NULL) {
    fprintf(stderr,"Error: unable to open disk: %s\n",argv[0]);
    exit(1);
    }

  fseek(fd,512,0);
  fread(d,512,1,fd);
  if (d->magicNum != UBIX_LABEL_MAGIC || d->magicNum2 != UBIX_LABEL_MAGIC) {
    fprintf(stderr, "Error: invalid disk label\n");
    exit(1);
    }

  i = atoi(argv[1]) - 1;
  if (i < 0) {
    fprintf(stderr, "Error: invalid partition: %s\n",argv[1]);
    exit(1);
    }

  if (d->partitions[i].p_fstype != UBIX_UBIXFS_MAGIC) {
    fprintf(stderr, "Error: not an ubix parition\n");
    exit(1);
    }

  if (q == 0x0) {
    memset(sector,0x0,512);
    if (fseek(fd,d->partitions[i].p_offset * 512,SEEK_SET) != 0x0) {
      fprintf(stderr, "Error: fseek failed\n");
      exit(0x1);
      }

    for (x = 1;x < d->partitions[i].p_size;x++) {
      if (fwrite(sector,512,1,fd) != 1) { 
        printf("Error: %i\n",x);
        exit(0x1);
        }
      }
    }


  blocks  = (d->partitions[i].p_size - 1) / 8;
  batSize = (d->partitions[i].p_size - 1) % 8;

  while ((batSize * 4096) < blocks) {
    batSize += 0x4;
    blocks--;
    }

  batSect = (d->partitions[i].p_offset + (blocks * 8));

  /* write super block here */
  rewind(fd);
  if (fseek(fd,((d->partitions[i].p_offset + d->partitions[i].p_size - 1) * 512),SEEK_SET) != 0x0) {
    fprintf(stderr, "Error: fseek failed for super block\n");
    exit(0x1);
    }
  // fill in superblock here
  
  memset(sb, 0, sizeof(ubixfs_superBlock));
  strcpy(sb->name, "UbixFS");
  sb->magic1 = UBIX_MAGIC1;
  sb->fsByteOrder = 0;
  sb->blockSize = 4096;
  sb->blockShift = 12;
  sb->numBlocks = blocks;
  sb->usedBlocks = 1;  // superblock counts as a used block
  sb->inodeCount = 0;
  sb->inodeSize = 4096;
  sb->magic2 = UBIX_MAGIC2;
  sb->blocksPerAG = 2048;
  sb->AGShift = 11;
  sb->numAGs = (sb->numBlocks+2047) / 2048;
  sb->lastUsedAG = 0;
  sb->flags = 0x434C454E; // CLEN
  sb->logBlocks.allocationGroup = 0;
  sb->logBlocks.start = 0;
  sb->logBlocks.len = 0;
  sb->logStart = 0;
  sb->logEnd = 0;
  sb->magic3 = UBIX_MAGIC3;
  sb->indicies.allocationGroup = 0;
  sb->indicies.start = 0;
  sb->indicies.len = 0;

  sb->rootDir.allocationGroup = 2;
  sb->rootDir.start = 0;
  sb->rootDir.len = 1;

  if (fwrite(sb, 512, 1, fd) != 0x1) {
    fprintf(stderr, "Error: Could not write out super block\n");
    exit(0x1);
    }

// write out the root dir

  memset(bth, sb->blockSize, 0);
  bth->firstDeleted = -1;
  rewind(fd);
  fseek(fd,  
        sb->rootDir.allocationGroup * sb->blockSize * sb->blocksPerAG, 
        SEEK_SET);
  fwrite(bth, 4096, 1, fd);


  /* Write BAT */
  rewind(fd);
  if (fseek(fd,batSect * 512,SEEK_SET) != 0x0) {
    fprintf(stderr, "Error: fseek failed for bat\n");
    exit(0x1);
    }

  memset(sector, 0x0 ,512);
  sector[0] = 0x80;
  if (fwrite(sector,512,1,fd) != 1) {
    fprintf(stderr, "Error: %i\n",x);
    exit(0x1);
    }
  
  sector[0] = 0x0; 
  for (x = 1;x < batSize;x++) {
    if (fwrite(sector,512,1,fd) != 1) {
      fprintf(stderr, "Error: %i\n",x);
      exit(0x1);
      }
    }

  /* Print debug info */
  printf("blocks:  [%i]\n",blocks);
  printf("batSect: [%i]\n",batSect);
  printf("batSize: [%i]\n",batSize);
  printf("d->partitions[%i].p_offset = %i\n",i,d->partitions[i].p_offset);
  printf("d->partitions[%i].p_size   = %i\n",i,d->partitions[i].p_size);
  printf("d->partitions[%i].p_bsize  = 0x%X\n",i,d->partitions[i].p_bsize);

  fclose(fd);
  printf("Format Complete\n");

  free(d);
  free(sb);

  return(0);
  }

/***
 $Log$
 Revision 1.10  2004/09/06 17:52:49  flameshadow
 add: UBIX_MAGIC numbers for the superblock

 Revision 1.9  2004/09/06 16:44:21  flameshadow
 chg: changed the pointers in include/inode.h to be void *
 add: wrote out root dir in the format utility

 Revision 1.8  2004/09/06 10:24:56  flameshadow
 chg: sync

 Revision 1.7  2004/09/03 14:05:41  reddawg
 Fixed format to move super block

 Revision 1.6  2004/09/03 13:33:00  flameshadow
 chg: BAT should be empty before allocating space for the root dir,
      indicies, and journal

 Revision 1.5  2004/09/03 12:30:56  flameshadow
 chg: used original/new superblock definition
 add: most of the superblock info filled in for format

 Revision 1.4  2004/09/03 11:22:54  flameshadow
 Note: beat ubu over the head because his internet connection is terrible

 Revision 1.3  2004/09/03 09:24:27  reddawg
 Disk Tools Work

 Revision 1.2  2004/09/03 08:15:09  reddawg
 ok

 Revision 1.1  2004/09/01 09:26:13  reddawg
 frame works are laid out

 END
 ***/