mirror of
https://github.com/reactos/reactos.git
synced 2024-08-29 22:58:34 +00:00
This is a simplified case of something cygwin does:
1) Create a shared memory are using CreateFileMapping with SEC_RESERVE set. 2) Make the handle inheritable. 3) Call CreateProcess with inherit = TRUE 4) Map the region using MapViewOfFile. 5) Commit pages using VirtualAlloc. See: MSDN's documentation on CreateFileMapping and VirtualAlloc. When the test runs correctly, "%d: starting" is printed twice, with no other output. svn path=/trunk/; revision=6481
This commit is contained in:
parent
15da259ba7
commit
1a752ef4ba
21
reactos/apps/tests/map_dup_inherit/makefile
Normal file
21
reactos/apps/tests/map_dup_inherit/makefile
Normal file
|
@ -0,0 +1,21 @@
|
|||
# $Id: makefile,v 1.1 2003/10/31 20:26:14 arty Exp $
|
||||
|
||||
PATH_TO_TOP = ../../..
|
||||
|
||||
TARGET_NORC = yes
|
||||
|
||||
TARGET_TYPE = program
|
||||
|
||||
TARGET_APPTYPE = console
|
||||
|
||||
TARGET_NAME = map_dup_inherit
|
||||
|
||||
TARGET_SDKLIBS = kernel32.a gdi32.a ntdll.a
|
||||
|
||||
TARGET_OBJECTS = $(TARGET_NAME).o
|
||||
|
||||
include $(PATH_TO_TOP)/rules.mak
|
||||
|
||||
include $(TOOLS_PATH)/helper.mk
|
||||
|
||||
# EOF
|
89
reactos/apps/tests/map_dup_inherit/map_dup_inherit.c
Normal file
89
reactos/apps/tests/map_dup_inherit/map_dup_inherit.c
Normal file
|
@ -0,0 +1,89 @@
|
|||
#include <stdio.h>
|
||||
#include <windows.h>
|
||||
|
||||
/* This tests the ability of the target win32 to create an anonymous file
|
||||
* mapping, create a mapping view with MapViewOfFile, and then realize the
|
||||
* pages with VirtualAlloc.
|
||||
*/
|
||||
|
||||
int main( int argc, char **argv ) {
|
||||
HANDLE file_view;
|
||||
void *file_map;
|
||||
int *x;
|
||||
|
||||
fprintf( stderr, "%d: Starting\n", GetCurrentProcessId() );
|
||||
|
||||
if( argc == 2 ) {
|
||||
file_map = atoi(argv[1]);
|
||||
} else {
|
||||
file_map = CreateFileMapping( INVALID_HANDLE_VALUE,
|
||||
NULL,
|
||||
PAGE_READWRITE | SEC_RESERVE,
|
||||
0, 0x1000, NULL );
|
||||
if( !SetHandleInformation( file_map,
|
||||
HANDLE_FLAG_INHERIT,
|
||||
HANDLE_FLAG_INHERIT ) ) {
|
||||
fprintf( stderr, "%d: Could not make handle inheritable.\n",
|
||||
GetCurrentProcessId() );
|
||||
return 100;
|
||||
}
|
||||
}
|
||||
|
||||
if( !file_map ) {
|
||||
fprintf( stderr, "%d: Could not create anonymous file map.\n",
|
||||
GetCurrentProcessId() );
|
||||
return 1;
|
||||
}
|
||||
|
||||
file_view = MapViewOfFile( file_map,
|
||||
FILE_MAP_WRITE,
|
||||
0,
|
||||
0,
|
||||
0x1000 );
|
||||
|
||||
if( !file_view ) {
|
||||
fprintf( stderr, "%d: Could not map view of file.\n",
|
||||
GetCurrentProcessId() );
|
||||
return 2;
|
||||
}
|
||||
|
||||
if( !VirtualAlloc( file_view, 0x1000, MEM_COMMIT, PAGE_READWRITE ) ) {
|
||||
fprintf( stderr, "%d: VirtualAlloc failed to realize the page.\n",
|
||||
GetCurrentProcessId() );
|
||||
return 3;
|
||||
}
|
||||
|
||||
x = (int *)file_view;
|
||||
x[0] = 0x12345678;
|
||||
|
||||
if( x[0] != 0x12345678 ) {
|
||||
fprintf( stderr, "%d: Can't write to the memory (%08x != 0x12345678)\n",
|
||||
GetCurrentProcessId() );
|
||||
return 4;
|
||||
}
|
||||
|
||||
if( argc == 1 ) {
|
||||
STARTUPINFO si;
|
||||
PROCESS_INFORMATION pi;
|
||||
char cmdline[1000];
|
||||
|
||||
memset( &si, 0, sizeof( si ) );
|
||||
memset( &pi, 0, sizeof( pi ) );
|
||||
|
||||
sprintf(cmdline,"%s %d", argv[0], (int)file_map);
|
||||
if( !CreateProcess(NULL, cmdline, NULL, NULL, TRUE, 0, NULL, NULL,
|
||||
&si, &pi ) ) {
|
||||
fprintf( stderr, "%d: Could not create child process.\n",
|
||||
GetCurrentProcessId() );
|
||||
return 5;
|
||||
}
|
||||
|
||||
if( WaitForSingleObject( pi.hThread, INFINITE ) != WAIT_OBJECT_0 ) {
|
||||
fprintf( stderr, "%d: Failed to wait for child process to terminate.\n",
|
||||
GetCurrentProcessId() );
|
||||
return 6;
|
||||
}
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
Loading…
Reference in a new issue