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#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;
}
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