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wdf_filter.c in windows_file_monitor

			
///
/// @file		wdf_filter.c 
///

//	以下的代码仅仅做示范用。你可以修改和使用，但仅仅限于非商业
//	的应用。本代码不做任何质量和安全上的保证。任何商业使用必须
//	得到作者的许可。可以以以下方式与作者联系:
//  MSN:	walled_river@hotmail.com
//	EMail:	mfc_tan_wen@163.com
//	QQ:		16191935

#include "wdf_filter.h"
#include "wdf_filter_disp.h"
#include "wdf_filter_fio.h"
#include "wdf_filter_fsctl.h"
#include "wdf/wd_syn.h"
#include "wdf/wd_dev.h"
#include "wdf/wd_sys.h"
#include "wdf/wd_fs.h"
#include "wdf/wd_shadow_io.h"

wd_drv			*g_drv = NULL;
wd_dev			*g_cdo = NULL;
wd_mutex		g_attach_lock;

wd_ustr			g_reg_path;
wd_wchar		g_reg_path_buf[512];

// All callback functions' pointers are recorded in 
// this structs.
wdff_callback	g_callback = {0};

wd_ustr			*g_cdo_name = NULL;
wd_ustr			*g_cdo_link = NULL;
wd_ustr			*g_cdo_name_2k = NULL;
wd_ustr			*g_cdo_link_2k = NULL;

// If any  file system is being activated or
// disactivated, this function will be called.
wd_void wdff_notify(
			in wd_dev *dev,
			in wd_bool active)
{
	wd_wchar name_buf[wd_dev_name_max_len];
	wd_ustr name;
	wd_ustr_init_em(&name,name_buf,wd_dev_name_max_len*sizeof(wd_wchar));
	wd_obj_get_name(dev,&name);
	if(active)
	{
		wdff_attach_fs_dev(dev);
		wdff_attach_fs_vols(wd_dev_drv(dev));
	}
	else
	{
		// I did nothing when a file system 
		// was being disactivated. 
	}
}

extern wd_void fsfe_exit();

wd_void wdff_unload(in wd_drv *driver)
{
	wd_ulong i,number;
	wd_stat status;
	wd_dev **devs = NULL; 
	wdff_dev_ext *ext = NULL;
	wd_dev *attached = NULL;

	// 以前在2k下,我认为无法动态卸载.现在我认为可以动态卸载. 
	devs = wd_drv_enum_devs(g_drv,&number,&status);
	if(devs == NULL)
	{
		wd_printf0("FSFE: To be unloaded... Get devices failed.\r\n");
		return;
	}

	wd_printf0("FSFE: To be unloaded.\r\n");

	fsfe_exit();

	for(i=0;i<number;i++)
	{
		if( (ext = wd_dev_ext(d			

			...
			...
			... to be continued.

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