static int set_reparse_index(ntfs_inode *ni, ntfs_index_context *xr,
le32 reparse_tag)
{
struct REPARSE_INDEX indx;
u64 file_id_cpu;
le64 file_id;
le16 seqn;
seqn = ni->mrec->sequence_number;
file_id_cpu = MK_MREF(ni->mft_no,le16_to_cpu(seqn));
file_id = cpu_to_le64(file_id_cpu);
indx.header.data_offset = const_cpu_to_le16(
sizeof(INDEX_ENTRY_HEADER)
+ sizeof(REPARSE_INDEX_KEY));
indx.header.data_length = const_cpu_to_le16(0);
indx.header.reservedV = const_cpu_to_le32(0);
indx.header.length = const_cpu_to_le16(
sizeof(struct REPARSE_INDEX));
indx.header.key_length = const_cpu_to_le16(
sizeof(REPARSE_INDEX_KEY));
indx.header.flags = const_cpu_to_le16(0);
indx.header.reserved = const_cpu_to_le16(0);
indx.key.reparse_tag = reparse_tag;
/* danger on processors which require proper alignment ! */
memcpy(&indx.key.file_id, &file_id, 8);
indx.filling = const_cpu_to_le32(0);
ntfs_index_ctx_reinit(xr);
return (ntfs_ie_add(xr,(INDEX_ENTRY*)&indx));
}
static int remove_reparse_index(ntfs_attr *na, ntfs_index_context *xr,
le32 *preparse_tag)
{
REPARSE_INDEX_KEY key;
u64 file_id_cpu;
le64 file_id;
s64 size;
le16 seqn;
int ret;
ret = na->data_size;
if (ret) {
/* read the existing reparse_tag */
size = ntfs_attr_pread(na, 0, 4, preparse_tag);
if (size == 4) {
seqn = na->ni->mrec->sequence_number;
file_id_cpu = MK_MREF(na->ni->mft_no,le16_to_cpu(seqn));
file_id = cpu_to_le64(file_id_cpu);
key.reparse_tag = *preparse_tag;
/* danger on processors which require proper alignment ! */
memcpy(&key.file_id, &file_id, 8);
if (!ntfs_index_lookup(&key, sizeof(REPARSE_INDEX_KEY), xr)
&& ntfs_index_rm(xr))
ret = -1;
} else {
ret = -1;
errno = ENODATA;
}
}
return (ret);
}
static int set_object_id_index(ntfs_inode *ni, ntfs_index_context *xo,
const OBJECT_ID_ATTR *object_id)
{
struct OBJECT_ID_INDEX indx;
u64 file_id_cpu;
le64 file_id;
le16 seqn;
seqn = ni->mrec->sequence_number;
file_id_cpu = MK_MREF(ni->mft_no,le16_to_cpu(seqn));
file_id = cpu_to_le64(file_id_cpu);
indx.header.data_offset = const_cpu_to_le16(
sizeof(INDEX_ENTRY_HEADER)
+ sizeof(OBJECT_ID_INDEX_KEY));
indx.header.data_length = const_cpu_to_le16(
sizeof(OBJECT_ID_INDEX_DATA));
indx.header.reservedV = const_cpu_to_le32(0);
indx.header.length = const_cpu_to_le16(
sizeof(struct OBJECT_ID_INDEX));
indx.header.key_length = const_cpu_to_le16(
sizeof(OBJECT_ID_INDEX_KEY));
indx.header.flags = const_cpu_to_le16(0);
indx.header.reserved = const_cpu_to_le16(0);
memcpy(&indx.key.object_id,object_id,sizeof(GUID));
indx.data.file_id = file_id;
memcpy(&indx.data.birth_volume_id,
&object_id->birth_volume_id,sizeof(GUID));
memcpy(&indx.data.birth_object_id,
&object_id->birth_object_id,sizeof(GUID));
memcpy(&indx.data.domain_id,
&object_id->domain_id,sizeof(GUID));
ntfs_index_ctx_reinit(xo);
return (ntfs_ie_add(xo,(INDEX_ENTRY*)&indx));
}