Ticket #170: DSS_test.c

#include <os2safe.h>
#define INCL_DOS
 #define INCL_DOSERRORS
 #include <os2.h>
 
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 
 int main(VOID) {
    STARTDATA sd       = {0};
    PSZ       exePath     = "CMD.EXE";
    PSZ       args        = "/K";
    APIRET    rc          = NO_ERROR;   /* Return code                  */
    PID       pid         = 0;          /* PID returned                 */
    ULONG     ulSessID    = 0;          /* Session ID returned          */
    PCHAR     env, pchEnvLast;
    LONG      lEnvSize, lNewEnvSize;
    PPIB      ppib;
 
    DosGetInfoBlocks( NULL, &ppib );
    pchEnvLast = ppib->pib_pchenv;
    while( *pchEnvLast )
        pchEnvLast += strlen( pchEnvLast ) + 1;
 
    lEnvSize = pchEnvLast - ppib->pib_pchenv;
    lNewEnvSize = lEnvSize + 100;
    env = malloc( lNewEnvSize );
    memset( env, 0, lNewEnvSize );
    memcpy( env, ppib->pib_pchenv, lEnvSize );
    strcpy( env + lEnvSize, "PETER=Weilbacher");
 
   sd.Length = 60; // fill everything
   sd.PgmName = exePath; // the executable
   sd.PgmInputs = args; // the arguments (without the program name)
   sd.Environment = env;
 
    rc = DosStartSession(&sd, &ulSessID, &pid);  /* Start the session */
 
    free( env );
 
    if (rc != NO_ERROR) {
       printf ("DosStartSession error : return code = %u\n", rc);
       return 1;
    }
 
    return NO_ERROR;
 }