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85 lines
2.3 KiB
C
85 lines
2.3 KiB
C
/*
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* COPYRIGHT: See COPYING in the top level directory
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* PROJECT: ReactOS system libraries
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* FILE: lib/smlib/execpgm.c
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* PURPOSE: Call SM API SM_API_EXECPGM
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*/
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#include "precomp.h"
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#define NDEBUG
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#include <debug.h>
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/**********************************************************************
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* NAME EXPORTED
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* SmExecuteProgram/2
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*
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* DESCRIPTION
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* This function is used to make the SM start an environment
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* subsystem server process.
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*
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* ARGUMENTS
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* hSmApiPort: port handle returned by SmConnectApiPort;
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* Pgm : name of the subsystem (to be used by the SM to
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* lookup the image name from the registry).
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* Valid names are: DEBUG, WINDOWS, POSIX, OS2,
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* and VMS.
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*
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* RETURN VALUE
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* Success status as handed by the SM reply; otherwise a failure
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* status code.
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*/
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NTSTATUS WINAPI
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SmExecuteProgram (IN HANDLE hSmApiPort,
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IN PUNICODE_STRING Pgm)
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{
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NTSTATUS Status;
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SM_PORT_MESSAGE SmReqMsg;
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DPRINT("SMLIB: %s(%p,'%S') called\n",
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__FUNCTION__, hSmApiPort, Pgm->Buffer);
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/* Check Pgm's length */
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if (Pgm->Length > (sizeof (Pgm->Buffer[0]) * SM_EXEXPGM_MAX_LENGTH))
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{
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return STATUS_INVALID_PARAMETER;
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}
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/* Marshal Pgm in the LPC message */
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RtlZeroMemory (& SmReqMsg, sizeof SmReqMsg);
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SmReqMsg.Request.ExecPgm.NameLength = Pgm->Length;
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RtlCopyMemory (SmReqMsg.Request.ExecPgm.Name,
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Pgm->Buffer,
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Pgm->Length);
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/* SM API to invoke */
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SmReqMsg.SmHeader.ApiIndex = SM_API_EXECUTE_PROGRAMME;
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/* LPC message */
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SmReqMsg.Header.u2.s2.Type = LPC_NEW_MESSAGE;
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SmReqMsg.Header.u1.s1.DataLength = SM_PORT_DATA_SIZE(SmReqMsg.Request);
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SmReqMsg.Header.u1.s1.TotalLength = SM_PORT_MESSAGE_SIZE;
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DPRINT("SMLIB: %s:\n"
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" u2.s2.Type = %d\n"
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" u1.s1.DataLength = %d\n"
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" u1.s1.TotalLength = %d\n"
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" sizeof(PORT_MESSAGE)==%u\n",
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__FUNCTION__,
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SmReqMsg.Header.u2.s2.Type,
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SmReqMsg.Header.u1.s1.DataLength,
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SmReqMsg.Header.u1.s1.TotalLength,
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sizeof(PORT_MESSAGE));
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/* Call SM and wait for a reply */
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Status = NtRequestWaitReplyPort (hSmApiPort, (PPORT_MESSAGE) & SmReqMsg, (PPORT_MESSAGE) & SmReqMsg);
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if (NT_SUCCESS(Status))
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{
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return SmReqMsg.SmHeader.Status;
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}
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DPRINT("SMLIB: %s failed (Status=0x%08lx)\n", __FUNCTION__, Status);
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return Status;
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}
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/* EOF */
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