Exemplo n.º 1
0
int smsa_vunmount( void )  {
    // Free cache
    smsa_close_cache();

    // Begin unmounting, log an error is unsucessful
    if( smsa_operation( UNMOUNT_DISK, NULL ) == -1 ) {
        logMessage( LOG_ERROR_LEVEL, "Unmounting disk failed...aborting\n" );
        return -1;
    }
    
    return 0;
}
Exemplo n.º 2
0
int smsa_vunmount( void )  {
	
	uint32_t command;     		 //holds the generated "unmount" command.	
	ERROR_SOURCE err = 0;		 //holds return values of function calls to checkForErrors	


	if ( DEBUG )
		printCache( cache_hits, disk_reads);		

	
	//save the contents of the memory to a file, so that
	//it can be restored when mount is called again, rather
	//than setting it to all zeros. If an error occurs in this 
	//function we will not return a 1 since it is not a catastrophic
	//error, and the virtual memory will still function properly 
	//once mount is called
//	err = saveDiskToFile();

	//generate the op command so that we can use it to call
	//the smsa_operation function to unmount the disk. Once 
	//again, DONT_CARE is defined as 0. After function call
	//command will contain the value neccessary to call
	//smsa_operation in order to unmount the disk
	err = generateOPCommand ( &command, SMSA_UNMOUNT, DONT_CARE, DONT_CARE, DONT_CARE );

	if ( DEBUG )
		logMessage ( LOG_INFO_LEVEL, "Sending UNMOUNT Command Across the Network");

	//call function with the "mount" op command,
	//and NULL set as the parameter for the char*,
	//since we will not use this char* in the mount
	//function
	if ( smsa_client_operation ( command, NULL ) ) {
		logMessage ( LOG_INFO_LEVEL, "_smsa_vunmount:Failed to send UNMOUNT command on the network");
		return 1;
	

	logMessage ( LOG_INFO_LEVEL, "Successfully Unmounted the Disk" );


	//free cache
	if ( smsa_close_cache() )
		logMessage ( LOG_INFO_LEVEL, "_smsa_vunmount:Failed to properly close cache in smsa_close_cache()" );
		return 1;
	}

	
	//if checkForErrors finds that err is non-zero, it will return 1. 
	//see smsa_driver.h for error enum definition
	return ( checkForErrors ( err, "_vumount", DONT_CARE, DONT_CARE, DONT_CARE, DONT_CARE, 
						DONT_CARE, DONT_CARE, DONT_CARE, DONT_CARE ) );
}