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/*
* Unix SMB/CIFS implementation.
* Utility functions for reparse points.
*
* Copyright (C) Jeremy Allison 2018
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
#include "util_reparse.h"
NTSTATUS fsctl_get_reparse_point(struct files_struct *fsp,
TALLOC_CTX *mem_ctx,
char **out_data,
uint32_t max_out_len,
uint32_t *out_len)
{
DBG_DEBUG("Called on %s\n", fsp_str_dbg(fsp));
return NT_STATUS_NOT_A_REPARSE_POINT;
}
static NTSTATUS check_reparse_data_buffer(
const uint8_t *in_data, size_t in_len)
{
uint16_t reparse_data_length;
if (in_len == 0) {
DBG_DEBUG("in_len=0\n");
return NT_STATUS_INVALID_BUFFER_SIZE;
}
if (in_len < 8) {
DBG_DEBUG("in_len=%zu\n", in_len);
return NT_STATUS_IO_REPARSE_DATA_INVALID;
}
reparse_data_length = PULL_LE_U16(in_data, 4);
if (reparse_data_length != (in_len - 8)) {
DBG_DEBUG("in_len=%zu, reparse_data_length=%"PRIu16"\n",
in_len,
reparse_data_length);
return NT_STATUS_IO_REPARSE_DATA_INVALID;
}
return NT_STATUS_OK;
}
NTSTATUS fsctl_set_reparse_point(struct files_struct *fsp,
TALLOC_CTX *mem_ctx,
const uint8_t *in_data,
uint32_t in_len)
{
NTSTATUS status;
DBG_DEBUG("Called on %s\n", fsp_str_dbg(fsp));
status = check_reparse_data_buffer(in_data, in_len);
if (!NT_STATUS_IS_OK(status)) {
return status;
}
return NT_STATUS_NOT_A_REPARSE_POINT;
}
NTSTATUS fsctl_del_reparse_point(struct files_struct *fsp,
TALLOC_CTX *mem_ctx,
const uint8_t *in_data,
uint32_t in_len)
{
DBG_DEBUG("Called on %s\n", fsp_str_dbg(fsp));
return NT_STATUS_NOT_A_REPARSE_POINT;
}
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