shutdown.c

使用于OS/2下的小工具的C源程序,使用于OS/2下的小工具的C源程序

/*
* SHUTDOWN.C - Prepare the system for power-down. 
*
* PROGRAMMER:	    Martti Ylikoski
* CREATED:	    23.8.1992
*/
static char *VERSION="Version  1.0. Copyright(c) Martti Ylikoski, 1992. " ;
/*
*/

#include <stdio.h>
#define INCL_DOS
#include <os2.h>
#include <param.h>
#include <paramstd.h>
ParamEntry pentry[12] = {
     "P", &ParamSetPause, 0,
     "F", &ParamSetFold, 0,
     "V", &ParamSetVerbose, 1,
     "R", &ParamSetReport, 0,
     "S", &ParamSetSubDirs, 0,
     "?", &ParamSetHelp, 1,
     "H", &ParamSetHelp, 1,
     "NOD", &ParamSetNoDefault, 0,
     "TEST", &ParamSetTest, 0,
     "Y", &ParamSetYes, 1,
     "N", &ParamSetTest, 1,
     "\0", NULL, 0
} ;

ParamBlock params = {
    "/-",   IGNORECASE | NOPRIORITY | NOTRIGGERSALLOWED ,
    pentry
} ;

static char *progname, *fname	;
extern unsigned long pflags ; /* needed because of paramstd */

int main(int argc, char *argv[])
{
ULONG Reserved ;
USHORT rc ;
int c ;

   progname = argv[0] ;

   ParamHandle(&params, &argc, argv) ;

   if (pflags & PA_HELP)
   { 
      printf("%s - Prepare the system for power-down.\n", progname) ;
      puts(VERSION) ;
      puts("SHUTDOWN flushes all buffers to the disk and closes") ;
      puts("down the file system.") ;
      puts("After this the system can be safely powered off.") ;
      puts("Usage: SHUTDOWN [/V] | [/? | /H]") ;
      puts("Where,") ;
      puts("     /V = Verbose     /Y = Yes (No confirm)");
      puts("     /H,/? = Help     /N = No (No action)") ;
      return( 0 ) ;
   }

   printf("SHUTDOWN - Prepare the system for power-down.\n", progname) ;
   puts(VERSION) ;
   if (pflags & PA_NO)
   {
      puts("No action taken (/N -option)")   ;
      return( 1 ) ;
   }

   if (pflags & PA_YES)
      ;
   else
   {  /* Confirm */
      puts("Want to proceed(Y/N)?" ) ;
      c = getchar()  ;

      if ( toupper( c)  != 'Y')
      {
         puts("SHUTDOWN cancelled.") ;
         return( 1 ) ;
      }
   }

   if (pflags & PA_VERBOSE)
      printf("DosShutdown()") ;
      
   Reserved = 0L ;
   rc = DosShutdown( Reserved ) ;

   if (rc = 0L)
   {
      puts("SHUTDOWN completed.") ;
      puts("It is now safe to power off the system or restart it") ;
      puts("by pressing CONTROL-ALT-DEL") ;
   }
   else
   {
      printf("SHUTDOWN reported error %d.", rc) ;
      return( rc ) ;
   }

   return( 0 ) ;

}