reactos/lib/kernel32/mem/virtual.c

   1 /* $Id: virtual.c,v 1.11 2003/07/10 18:50:51 chorns Exp $
   2  *
   3  * COPYRIGHT:            See COPYING in the top level directory
   4  * PROJECT:              ReactOS kernel
   5  * FILE:                 lib/kernel32/mem/virtual.c
   6  * PURPOSE:              Passing the Virtualxxx functions onto the kernel
   7  * PROGRAMMER:           David Welch (welch@mcmail.com)
   8  */
   9
  10 /* INCLUDES ******************************************************************/
  11
  12 #include <k32.h>
  13
  14 /* FUNCTIONS *****************************************************************/
  15
  16 /*
  17  * @implemented
  18  */
  19 LPVOID STDCALL
  20 VirtualAllocEx(HANDLE hProcess,
  21                LPVOID lpAddress,
  22                DWORD dwSize,
  23                DWORD flAllocationType,
  24                DWORD flProtect)
  25 {
  26   NTSTATUS Status;
  27
  28   Status = NtAllocateVirtualMemory(hProcess,
  29                                    (PVOID *)&lpAddress,
  30                                    0,
  31                                    (PULONG)&dwSize,
  32                                    flAllocationType,
  33                                    flProtect);
  34   if (!NT_SUCCESS(Status))
  35     {
  36       SetLastErrorByStatus(Status);
  37       return(NULL);
  38     }
  39   return(lpAddress);
  40 }
  41
  42
  43 /*
  44  * @implemented
  45  */
  46 LPVOID STDCALL
  47 VirtualAlloc(LPVOID lpAddress,
  48              DWORD dwSize,
  49              DWORD flAllocationType,
  50              DWORD flProtect)
  51 {
  52   return(VirtualAllocEx(GetCurrentProcess(),
  53                         lpAddress,
  54                         dwSize,
  55                         flAllocationType,
  56                         flProtect));
  57 }
  58
  59
  60 /*
  61  * @implemented
  62  */
  63 WINBOOL STDCALL
  64 VirtualFreeEx(HANDLE hProcess,
  65               LPVOID lpAddress,
  66               DWORD dwSize,
  67               DWORD dwFreeType)
  68 {
  69   NTSTATUS Status;
  70
  71   Status = NtFreeVirtualMemory(hProcess,
  72                                (PVOID *)&lpAddress,
  73                                (PULONG)&dwSize,
  74                                dwFreeType);
  75   if (!NT_SUCCESS(Status))
  76     {
  77       SetLastErrorByStatus(Status);
  78       return(FALSE);
  79     }
  80   return(TRUE);
  81 }
  82
  83
  84 /*
  85  * @implemented
  86  */
  87 WINBOOL STDCALL
  88 VirtualFree(LPVOID lpAddress,
  89             DWORD dwSize,
  90             DWORD dwFreeType)
  91 {
  92   return(VirtualFreeEx(GetCurrentProcess(),
  93                        lpAddress,
  94                        dwSize,
  95                        dwFreeType));
  96 }
  97
  98
  99 /*
 100  * @implemented
 101  */
 102 WINBOOL STDCALL
 103 VirtualProtect(LPVOID lpAddress,
 104                DWORD dwSize,
 105                DWORD flNewProtect,
 106                PDWORD lpflOldProtect)
 107 {
 108   return(VirtualProtectEx(GetCurrentProcess(),
 109                           lpAddress,
 110                           dwSize,
 111                           flNewProtect,
 112                           lpflOldProtect));
 113 }
 114
 115
 116 /*
 117  * @implemented
 118  */
 119 WINBOOL STDCALL
 120 VirtualProtectEx(HANDLE hProcess,
 121                  LPVOID lpAddress,
 122                  DWORD dwSize,
 123                  DWORD flNewProtect,
 124                  PDWORD lpflOldProtect)
 125 {
 126   NTSTATUS Status;
 127
 128   Status = NtProtectVirtualMemory(hProcess,
 129                                   (PVOID)lpAddress,
 130                                   dwSize,
 131                                   flNewProtect,
 132                                   (PULONG)lpflOldProtect);
 133   if (!NT_SUCCESS(Status))
 134     {
 135       SetLastErrorByStatus(Status);
 136       return(FALSE);
 137     }
 138   return(TRUE);
 139 }
 140
 141
 142 /*
 143  * @implemented
 144  */
 145 WINBOOL STDCALL
 146 VirtualLock(LPVOID lpAddress,
 147             DWORD dwSize)
 148 {
 149   ULONG BytesLocked;
 150   NTSTATUS Status;
 151
 152   Status = NtLockVirtualMemory(NtCurrentProcess(),
 153                                lpAddress,
 154                                dwSize,
 155                                &BytesLocked);
 156   if (!NT_SUCCESS(Status))
 157     {
 158       SetLastErrorByStatus(Status);
 159       return(FALSE);
 160     }
 161   return(TRUE);
 162 }
 163
 164
 165 /*
 166  * @implemented
 167  */
 168 DWORD STDCALL
 169 VirtualQuery(LPCVOID lpAddress,
 170              PMEMORY_BASIC_INFORMATION lpBuffer,
 171              DWORD dwLength)
 172 {
 173   return(VirtualQueryEx(NtCurrentProcess(),
 174                         lpAddress,
 175                         lpBuffer,
 176                         dwLength));
 177 }
 178
 179
 180 /*
 181  * @implemented
 182  */
 183 DWORD STDCALL
 184 VirtualQueryEx(HANDLE hProcess,
 185                LPCVOID lpAddress,
 186                PMEMORY_BASIC_INFORMATION lpBuffer,
 187                DWORD dwLength)
 188 {
 189   NTSTATUS Status;
 190   ULONG ResultLength;
 191
 192   Status = NtQueryVirtualMemory(hProcess,
 193                                 (LPVOID)lpAddress,
 194                                 MemoryBasicInformation,
 195                                 lpBuffer,
 196                                 sizeof(MEMORY_BASIC_INFORMATION),
 197                                 &ResultLength );
 198   if (!NT_SUCCESS(Status))
 199     {
 200       SetLastErrorByStatus(Status);
 201       return(ResultLength);
 202     }
 203   return(ResultLength);
 204 }
 205
 206
 207 /*
 208  * @implemented
 209  */
 210 WINBOOL STDCALL
 211 VirtualUnlock(LPVOID lpAddress,
 212               DWORD dwSize)
 213 {
 214   ULONG BytesLocked;
 215   NTSTATUS Status;
 216
 217   Status = NtUnlockVirtualMemory(NtCurrentProcess(),
 218                                  lpAddress,
 219                                  dwSize,
 220                                  &BytesLocked);
 221   if (!NT_SUCCESS(Status))
 222     {
 223       SetLastErrorByStatus(Status);
 224       return(FALSE);
 225     }
 226   return(TRUE);
 227 }
 228
 229 /* EOF */