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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 ,
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TALLOC_CTX * mem_ctx ,
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uint8_t * * _out_data ,
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uint32_t max_out_len ,
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uint32_t * _out_len )
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{
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DBG_DEBUG ( " Called on %s \n " , fsp_str_dbg ( fsp ) ) ;
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return NT_STATUS_NOT_A_REPARSE_POINT ;
}
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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 ;
}
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NTSTATUS fsctl_set_reparse_point ( struct files_struct * fsp ,
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TALLOC_CTX * mem_ctx ,
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const uint8_t * in_data ,
uint32_t in_len )
{
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NTSTATUS status ;
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DBG_DEBUG ( " Called on %s \n " , fsp_str_dbg ( fsp ) ) ;
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status = check_reparse_data_buffer ( in_data , in_len ) ;
if ( ! NT_STATUS_IS_OK ( status ) ) {
return status ;
}
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return NT_STATUS_NOT_A_REPARSE_POINT ;
}
NTSTATUS fsctl_del_reparse_point ( struct files_struct * fsp ,
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TALLOC_CTX * mem_ctx ,
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const uint8_t * in_data ,
uint32_t in_len )
{
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DBG_DEBUG ( " Called on %s \n " , fsp_str_dbg ( fsp ) ) ;
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return NT_STATUS_NOT_A_REPARSE_POINT ;
}