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/********************************************************/
/* ntapi: Native API core library */
/* Copyright (C) 2013--2016 Z. Gilboa */
/* Released under GPLv2 and GPLv3; see COPYING.NTAPI. */
/********************************************************/
#include <ntapi/ntapi.h>
#include <ntapi/nt_file.h>
#include <ntapi/nt_fsctl.h>
#include <ntapi/nt_mount.h>
#include <ntapi/nt_stat.h>
#include "ntapi_impl.h"
int32_t __stdcall __ntapi_tt_stat(
__in void * hfile,
__in void * hroot __optional,
__in nt_unicode_string * path,
__out nt_stat * stat,
__out uintptr_t * buffer,
__in uint32_t buffer_size,
__in uint32_t open_options,
__in uint32_t flags)
{
int32_t status;
nt_oa oa;
nt_iosb iosb;
nt_unicode_string * sdev;
nt_fai * fai;
/* validation */
if (!hfile && !path)
return NT_STATUS_INVALID_HANDLE;
/* hfile */
if (!hfile) {
/* oa */
oa.len = sizeof(nt_oa);
oa.root_dir = hroot;
oa.obj_name = path;
oa.obj_attr = 0;
oa.sec_desc = 0;
oa.sec_qos = 0;
/* open file/folder */
status = __ntapi->zw_open_file(
&hfile,
NT_SEC_SYNCHRONIZE | NT_FILE_READ_ATTRIBUTES | NT_FILE_READ_ACCESS,
&oa,
&iosb,
NT_FILE_SHARE_READ | NT_FILE_SHARE_WRITE,
open_options | NT_FILE_SYNCHRONOUS_IO_ALERT);
if (status != NT_STATUS_SUCCESS)
return status;
stat->flags_out = NT_STAT_NEW_HANDLE;
}
stat->hfile = hfile;
stat->flags_in = flags;
/* system-unique device name */
status = __ntapi->zw_query_information_file(
hfile,
&iosb,
buffer,
buffer_size,
NT_FILE_ALL_INFORMATION);
if (status != NT_STATUS_SUCCESS)
return status;
/* copy file info minus name */
fai = (nt_fai *)buffer;
__ntapi->tt_aligned_block_memcpy(
(uintptr_t *)stat,
(uintptr_t *)fai,
((size_t)(&((nt_fai *)0)->name_info)));
/* record the file name length, but do not hash */
stat->file_name_length = fai->name_info.file_name_length;
stat->file_name_hash = 0;
/* file system size information */
status = __ntapi->zw_query_volume_information_file(
hfile,
&iosb,
&(stat->fssi),
sizeof(stat->fssi),
NT_FILE_FS_SIZE_INFORMATION);
if (status != NT_STATUS_SUCCESS)
return status;
/* system-unique device name (simpler than statfs) */
iosb.info = 0;
status = __ntapi->zw_query_object(
hfile,
NT_OBJECT_NAME_INFORMATION,
buffer,
buffer_size,
(uint32_t *)&iosb.info);
if (status != NT_STATUS_SUCCESS)
return status;
sdev = (nt_unicode_string *)buffer;
stat->dev_name_strlen = sdev->strlen - (uint16_t)stat->file_name_length;
stat->dev_name_hash = __ntapi->tt_buffer_crc32(
0,
sdev->buffer,
stat->dev_name_strlen);
if (flags & NT_STAT_DEV_NAME_COPY) {
if (stat->dev_name_maxlen < sdev->strlen)
/* does not justify failure */
*stat->dev_name = 0;
else
__ntapi->tt_memcpy_utf16(
(wchar16_t *)stat->dev_name,
(wchar16_t *)sdev->buffer,
stat->dev_name_strlen);
} else
*stat->dev_name = 0;
return status;
}
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