reactos/lib/smlib/execpgm.c

   1 /* $Id$
   2  *
   3  * COPYRIGHT:       See COPYING in the top level directory
   4  * PROJECT:         ReactOS system libraries
   5  * FILE:            lib/smlib/execpgm.c
   6  * PURPOSE:         Call SM API SM_API_EXECPGM
   7  */
   8 #include "precomp.h"
   9
  10 #define NDEBUG
  11 #include <debug.h>
  12
  13 /**********************************************************************
  14  * NAME                                                 EXPORTED
  15  *      SmExecuteProgram/2
  16  *
  17  * DESCRIPTION
  18  *      This function is used to make the SM start an environment
  19  *      subsystem server process.
  20  *
  21  * ARGUMENTS
  22  *      hSmApiPort: port handle returned by SmConnectApiPort;
  23  *      Pgm       : name of the subsystem (to be used by the SM to
  24  *                  lookup the image name from the registry).
  25  *                  Valid names are: DEBUG, WINDOWS, POSIX, OS2,
  26  *                  and VMS.
  27  *
  28  * RETURN VALUE
  29  *      Success status as handed by the SM reply; otherwise a failure
  30  *      status code.
  31  */
  32 NTSTATUS STDCALL
  33 SmExecuteProgram (IN HANDLE          hSmApiPort,
  34                   IN PUNICODE_STRING Pgm)
  35 {
  36   NTSTATUS         Status;
  37   SM_PORT_MESSAGE  SmReqMsg;
  38
  39
  40   DPRINT("SMLIB: %s(%08lx,'%S') called\n",
  41         __FUNCTION__, hSmApiPort, Pgm->Buffer);
  42
  43   /* Check Pgm's length */
  44   if (Pgm->Length > (sizeof (Pgm->Buffer[0]) * SM_EXEXPGM_MAX_LENGTH))
  45   {
  46     return STATUS_INVALID_PARAMETER;
  47   }
  48   /* Marshal Pgm in the LPC message */
  49   RtlZeroMemory (& SmReqMsg, sizeof SmReqMsg);
  50   SmReqMsg.Request.ExecPgm.NameLength = Pgm->Length;
  51   RtlCopyMemory (SmReqMsg.Request.ExecPgm.Name,
  52                  Pgm->Buffer,
  53                  Pgm->Length);
  54
  55   /* SM API to invoke */
  56   SmReqMsg.SmHeader.ApiIndex = SM_API_EXECUTE_PROGRAMME;
  57
  58   /* LPC message */
  59   SmReqMsg.Header.u2.s2.Type = LPC_NEW_MESSAGE;
  60   SmReqMsg.Header.u1.s1.DataLength    = SM_PORT_DATA_SIZE(SmReqMsg.Request);
  61   SmReqMsg.Header.u1.s1.TotalLength = SM_PORT_MESSAGE_SIZE;
  62
  63   DPRINT("SMLIB: %s:\n"
  64           "  u2.s2.Type = %d\n"
  65           "  u1.s1.DataLength    = %d\n"
  66           "  u1.s1.TotalLength = %d\n"
  67           "  sizeof(PORT_MESSAGE)==%d\n",
  68           __FUNCTION__,
  69           SmReqMsg.Header.u2.s2.Type,
  70           SmReqMsg.Header.u1.s1.DataLength,
  71           SmReqMsg.Header.u1.s1.TotalLength,
  72           sizeof(PORT_MESSAGE));
  73
  74   /* Call SM and wait for a reply */
  75   Status = NtRequestWaitReplyPort (hSmApiPort, (PPORT_MESSAGE) & SmReqMsg, (PPORT_MESSAGE) & SmReqMsg);
  76   if (NT_SUCCESS(Status))
  77   {
  78     return SmReqMsg.SmHeader.Status;
  79   }
  80   DPRINT("SMLIB: %s failed (Status=0x%08lx)\n", __FUNCTION__, Status);
  81   return Status;
  82 }
  83
  84 /* EOF */