#include "project.h"

int clone_ea (ext2_filsys src_fs, ext2_filsys dst_fs, ext2_ino_t i_num, struct ext2_inode *src_i, struct ext2_inode *dst_i)
{
  int ret;
  blk64_t src_blk = src_i->i_file_acl;
  blk64_t goal, dst_blk, len;
  dgrp_t                  group;

  struct ext2_ext_attr_header *h;

  if (!src_blk) return 0;

  if (!ea_map_lookup (src_blk, &dst_blk, &len)) {
    /* Easy case */

    EXT2_MOAN_FAIL (ret, ext2fs_adjust_ea_refcount2 (dst_fs, dst_blk, buf, +1, NULL));

    if (ret) return ret;

    dst_i->i_file_acl = dst_blk;
    dst_i->i_blocks += len * (dst_fs->blocksize / 512);
    return 0;
  }

  EXT2_MOAN_FAIL (ret, io_channel_read_blk64 (src_fs->io, src_blk, 1, buf));

  if (ret) return ret;

  h = (struct ext2_ext_attr_header *) buf;
  len = h->h_blocks;

  if (len > 1) {
    EXT2_MOAN_FAIL (ret, io_channel_read_blk64 (src_fs->io, src_blk + 1, len - 1, buf + src_fs->blocksize));

    if (ret) return ret;
  }

  h->h_refcount = 0;

  group = ext2fs_group_of_ino (dst_fs, i_num);
  goal = ext2fs_group_first_block2 (dst_fs, group);

  EXT2_MOAN_FAIL (ret, ext2fs_alloc_range (dst_fs, 0, goal, len, &dst_blk));

  if (ret) return ret;

  //printf ("EA block %d mapped to block %d len %d\n", (int)src_blk, (int) dst_blk, (int)len);
  stats_ea_blocks++;

  if (ea_map_set (src_blk, dst_blk, len))
    return -1;


  EXT2_MOAN_FAIL (ret, io_channel_write_blk64 (dst_fs->io, dst_blk, len, buf));

  if (ret) return ret;

  dst_i->i_file_acl = dst_blk & 0xffffffff;
  dst_i->osd2.linux2.l_i_file_acl_high = dst_blk >> 32;
  dst_i->i_blocks += len * (dst_fs->blocksize / 512);
  EXT2_MOAN_FAIL (ret, ext2fs_adjust_ea_refcount2 (dst_fs, dst_blk, buf, +1, NULL));

  if (ret) return ret;


  return 0;
}