osdProcess.c File Reference

#include <stdlib.h>
#include <stdio.h>
#include <windows.h>
#include "osiProcess.h"

Include dependency graph for osdProcess.c:

Go to the source code of this file.

Macros
#define	STRICT

Functions
LIBCOM_API osiGetUserNameReturn epicsStdCall	osiGetUserName (char *pBuf, unsigned bufSizeIn)
LIBCOM_API osiSpawnDetachedProcessReturn epicsStdCall	osiSpawnDetachedProcess (const char *pProcessName, const char *pBaseExecutableName)

Macro Definition Documentation

#define STRICT

Definition at line 24 of file osdProcess.c.

Function Documentation

LIBCOM_API osiGetUserNameReturn epicsStdCall osiGetUserName	(	char *	pBuf,
		unsigned	bufSizeIn
	)

Definition at line 29 of file osdProcess.c.

{
    DWORD bufsize;

    if ( bufSizeIn > 0xffffffff ) {
        return osiGetUserNameFail;
    }

    bufsize = (DWORD) bufSizeIn;

    if ( ! GetUserName (pBuf, &bufsize) ) {
        return osiGetUserNameFail;
    }

    if ( *pBuf == '\0' ) {
        return osiGetUserNameFail;
    }

    return osiGetUserNameSuccess;
}

LIBCOM_API osiSpawnDetachedProcessReturn epicsStdCall osiSpawnDetachedProcess	(	const char *	pProcessName,
		const char *	pBaseExecutableName
	)

Definition at line 51 of file osdProcess.c.

{
    BOOL status;
    STARTUPINFO startupInfo;
    PROCESS_INFORMATION processInfo;

    GetStartupInfo ( &startupInfo );
    startupInfo.lpReserved = NULL;
    startupInfo.lpTitle = (char *) pProcessName;
    startupInfo.dwFlags = STARTF_USESHOWWINDOW;
    startupInfo.wShowWindow = SW_SHOWMINNOACTIVE;

    status =  CreateProcess (
        NULL, /* pointer to name of executable module (not required if command line is specified) */
        (char *) pBaseExecutableName, /* pointer to command line string */
        NULL, /* pointer to process security attributes */
        NULL, /* pointer to thread security attributes */
        FALSE, /* handle inheritance flag */
        CREATE_NEW_PROCESS_GROUP | DETACHED_PROCESS, /* creation flags */
        NULL, /* pointer to new environment block (defaults to caller's environement) */
        NULL, /* pointer to current directory name  (defaults to caller's current directory) */
        &startupInfo, /* pointer to STARTUPINFO */
        &processInfo /* pointer to PROCESS_INFORMATION */
    );
    if ( status == 0 ) {
        DWORD W32status;
        LPVOID errStrMsgBuf;
        LPVOID complteMsgBuf;

        W32status = FormatMessage (
            FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM,
            NULL,
            GetLastError (),
            MAKELANGID (LANG_NEUTRAL, SUBLANG_DEFAULT), /* Default language */
                (LPTSTR) &errStrMsgBuf,
            0,
            NULL
        );

        if ( W32status ) {
            char *pFmtArgs[6];
            pFmtArgs[0] = "Failed to start executable -";
            pFmtArgs[1] = (char *) pBaseExecutableName;
            pFmtArgs[2] = errStrMsgBuf;
            pFmtArgs[3] = "Changes may be required in your \"path\" environment variable.";

            W32status = FormatMessage(
                FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_STRING |
                    FORMAT_MESSAGE_ARGUMENT_ARRAY | 80,
                "%1 \"%2\". %3 %4",
                0,
                MAKELANGID (LANG_NEUTRAL, SUBLANG_DEFAULT), /* Default language */
                (LPTSTR) &complteMsgBuf,
                0,
                pFmtArgs
            );
            if (W32status) {
                fprintf (stderr, "%s\n", (char *) complteMsgBuf);
                LocalFree (complteMsgBuf);
            }
            else {
                fprintf (stderr, "%s\n", (char *) errStrMsgBuf);
            }

            /* Free the buffer. */
            LocalFree (errStrMsgBuf);
        }
        else {
            fprintf (stderr, "!!WARNING!!\n");
            fprintf (stderr, "Unable to locate executable \"%s\".\n", pBaseExecutableName);
            fprintf (stderr, "You may need to modify your \"path\" environment variable.\n");
        }
        return osiSpawnDetachedProcessFail;
    }

    return osiSpawnDetachedProcessSuccess;
}