|
 |
dd89bb |
/********************************************************/
|
|
|
dd89bb |
/* ntapi: Native API core library */
|
|
|
dde53a |
/* Copyright (C) 2013--2017 Z. Gilboa */
|
|
|
dd89bb |
/* Released under GPLv2 and GPLv3; see COPYING.NTAPI. */
|
|
|
dd89bb |
/********************************************************/
|
|
|
dd89bb |
|
|
|
dd89bb |
#include <psxtypes/psxtypes.h>
|
|
|
dd89bb |
#include <pemagine/pemagine.h>
|
|
|
dd89bb |
#include <ntapi/nt_sysinfo.h>
|
|
|
dd89bb |
#include <ntapi/nt_memory.h>
|
|
|
dd89bb |
#include <ntapi/ntapi.h>
|
|
|
dd89bb |
#include "ntapi_impl.h"
|
|
|
dd89bb |
|
|
|
dd89bb |
int32_t __stdcall __ntapi_tt_get_system_info_snapshot(
|
|
|
dd89bb |
__in_out nt_system_information_snapshot * sys_info_snapshot)
|
|
|
dd89bb |
{
|
|
|
dd89bb |
int32_t status;
|
|
|
dd89bb |
|
|
|
dd89bb |
/* pre-allocated buffer? */
|
|
|
dd89bb |
if (sys_info_snapshot->buffer)
|
|
|
dd89bb |
status = __ntapi->zw_query_system_information(
|
|
|
dd89bb |
sys_info_snapshot->sys_info_class,
|
|
|
dd89bb |
sys_info_snapshot->buffer,
|
|
|
dd89bb |
sys_info_snapshot->max_len,
|
|
|
dd89bb |
&sys_info_snapshot->info_len);
|
|
|
dd89bb |
else {
|
|
|
dd89bb |
/* set initial buffer size */
|
|
|
dd89bb |
sys_info_snapshot->max_len = NT_ALLOCATION_GRANULARITY;
|
|
|
dd89bb |
|
|
|
dd89bb |
/* allocate initial buffer */
|
|
|
dd89bb |
status = __ntapi->zw_allocate_virtual_memory(
|
|
|
dd89bb |
NT_CURRENT_PROCESS_HANDLE,
|
|
|
dd89bb |
(void **)&sys_info_snapshot->buffer,
|
|
|
dd89bb |
0,
|
|
|
dd89bb |
&sys_info_snapshot->max_len,
|
|
|
dd89bb |
NT_MEM_COMMIT,
|
|
|
dd89bb |
NT_PAGE_READWRITE);
|
|
|
dd89bb |
|
|
|
dd89bb |
/* verification */
|
|
|
dd89bb |
if (status != NT_STATUS_SUCCESS)
|
|
|
dd89bb |
return status;
|
|
|
dd89bb |
|
|
|
dd89bb |
/* loop until buffer is large enough to satisfy the system */
|
|
|
dd89bb |
while ((status = __ntapi->zw_query_system_information(
|
|
|
dd89bb |
sys_info_snapshot->sys_info_class,
|
|
|
dd89bb |
sys_info_snapshot->buffer,
|
|
|
dd89bb |
sys_info_snapshot->max_len,
|
|
|
dd89bb |
&sys_info_snapshot->info_len))
|
|
|
dd89bb |
== NT_STATUS_INFO_LENGTH_MISMATCH) {
|
|
|
dd89bb |
|
|
|
dd89bb |
/* free previously allocated memory */
|
|
|
dd89bb |
status = __ntapi->zw_free_virtual_memory(
|
|
|
dd89bb |
NT_CURRENT_PROCESS_HANDLE,
|
|
|
dd89bb |
(void **)&sys_info_snapshot->buffer,
|
|
|
dd89bb |
&sys_info_snapshot->max_len,
|
|
|
dd89bb |
NT_MEM_RELEASE);
|
|
|
dd89bb |
|
|
|
dd89bb |
/* verification */
|
|
|
dd89bb |
if (status != NT_STATUS_SUCCESS)
|
|
|
dd89bb |
return status;
|
|
|
dd89bb |
|
|
|
dd89bb |
/* reset buffer and increase buffer size */
|
|
|
dd89bb |
sys_info_snapshot->buffer = (nt_system_information_buffer *)0;
|
|
|
dd89bb |
sys_info_snapshot->max_len += NT_ALLOCATION_GRANULARITY;
|
|
|
dd89bb |
|
|
|
dd89bb |
/* reallocate buffer memory */
|
|
|
dd89bb |
status = __ntapi->zw_allocate_virtual_memory(
|
|
|
dd89bb |
NT_CURRENT_PROCESS_HANDLE,
|
|
|
dd89bb |
(void **)&sys_info_snapshot->buffer,
|
|
|
dd89bb |
0,
|
|
|
dd89bb |
&sys_info_snapshot->max_len,
|
|
|
dd89bb |
NT_MEM_COMMIT,
|
|
|
dd89bb |
NT_PAGE_READWRITE);
|
|
|
dd89bb |
|
|
|
dd89bb |
/* verification */
|
|
|
dd89bb |
if (status != NT_STATUS_SUCCESS)
|
|
|
dd89bb |
return status;
|
|
|
dd89bb |
}
|
|
|
dd89bb |
}
|
|
|
dd89bb |
|
|
|
dd89bb |
/* verification */
|
|
|
dd89bb |
if (status == NT_STATUS_SUCCESS) {
|
|
|
dd89bb |
sys_info_snapshot->pcurrent = &sys_info_snapshot->buffer->mark;
|
|
|
dd89bb |
return NT_STATUS_SUCCESS;
|
|
|
dd89bb |
} else {
|
|
|
dd89bb |
sys_info_snapshot->pcurrent = (void *)0;
|
|
|
dd89bb |
return status;
|
|
|
dd89bb |
}
|
|
|
dd89bb |
}
|