int get_page_size(void)
{
if (!page_mask) init_page_size();
return page_mask + 1;
}
// create or display environment variables or aliases
int set_cmd( int argc, char **argv )
{
char *arg;
long fSet;
PCH feptr, pchList;
char szBuffer[CMDBUFSIZ];
init_page_size();
// set the pointer to either the environment or the alias list
if ( _stricmp( gpInternalName, SET_COMMAND ) == 0 ) {
pchList = 0L;
} else
pchList = glpAliasList;
// strip leading switches
if (( GetSwitches( argv[1], "AMPR", &fSet, 1 ) != 0) || (( fSet & SET_READ ) && ( first_arg( argv[1] ) == NULL )))
return ( usage(( pchList == glpAliasList ) ? ALIAS_USAGE : SET_USAGE ));
// check for master environment set
if (( pchList == 0L ) && ( fSet & SET_MASTER ))
pchList = glpMasterEnvironment;
// read environment or alias file(s)
if ( fSet & SET_READ )
return ( SetFromFile( argv[1], pchList, 0 ));
// pause after each page
if ( fSet & SET_PAUSE ) {
gnPageLength = GetScrRows();
}
if ( first_arg( argv[1] ) == NULL ) {
if ( pchList == 0L )
pchList = glpEnvironment;
// print all the variables or aliases
for ( feptr = pchList; ( *feptr != '\0' ); feptr = next_env( feptr ) ) {
more_page( feptr, 0 );
}
if ( pchList == glpEnvironment ) {
if (( arg = get_list( BEGINLIBPATH, pchList )) != 0L ) {
sprintf( szBuffer, FMT_TWO_EQUAL_STR, BEGINLIBPATH, arg );
more_page( szBuffer, 0 );
}
if (( arg = get_list( ENDLIBPATH, pchList )) != 0L ) {
sprintf( szBuffer, FMT_TWO_EQUAL_STR, ENDLIBPATH, arg );
more_page( szBuffer, 0 );
}
}
// return an error message if no aliases exist
// just return if no environment variables exist
return (( feptr == glpAliasList ) ? error( ERROR_4DOS_NO_ALIASES, NULL ) : 0 );
}
if ( fSet & SET_EXPRESSION ) {
if (( arg = strchr( argv[1], '=' )) != NULL )
arg = skipspace( ++arg );
else
arg = argv[1];
evaluate( arg );
if ( cv.bn < 0 )
qputs( arg );
// create/modify/delete a variable
return (( arg == argv[1] ) ? 0 : add_list( argv[1], pchList ));
}
// display the current variable or alias argument?
// (setting environment vars requires a '='; it's optional with aliases)
if ((( arg = strchr( argv[1], '=' )) == NULL ) && (( pchList == 0L ) || ( ntharg( argv[1], 1 ) == NULL ))) {
if (( feptr = get_list( argv[1], pchList )) == 0L ) {
return ( error((( pchList == glpAliasList ) ? ERROR_4DOS_NOT_ALIAS : ERROR_4DOS_NOT_IN_ENVIRONMENT),argv[1]));
}
printf( FMT_FAR_STR_CRLF, feptr );
return 0;
}
// create/modify/delete a variable or alias
return ( add_list( argv[1], pchList ));
}
static struct object *create_mapping( struct directory *root, const struct unicode_str *name,
unsigned int attr, file_pos_t size, int protect,
obj_handle_t handle )
{
struct mapping *mapping;
int access = 0;
if (!page_mask) init_page_size();
if (!(mapping = create_named_object_dir( root, name, attr, &mapping_ops )))
return NULL;
if (get_error() == STATUS_OBJECT_NAME_EXISTS)
return &mapping->obj; /* Nothing else to do */
mapping->header_size = 0;
mapping->base = NULL;
mapping->shared_file = NULL;
mapping->shared_size = 0;
if (protect & VPROT_READ) access |= FILE_READ_DATA;
if (protect & VPROT_WRITE) access |= FILE_WRITE_DATA;
if (handle)
{
if (!(mapping->file = get_file_obj( current->process, handle, access ))) goto error;
if (protect & VPROT_IMAGE)
{
if (!get_image_params( mapping )) goto error;
return &mapping->obj;
}
if (!size)
{
if (!get_file_size( mapping->file, &size )) goto error;
if (!size)
{
set_error( STATUS_MAPPED_FILE_SIZE_ZERO );
goto error;
}
}
else
{
if (!grow_file( mapping->file, size )) goto error;
}
}
else /* Anonymous mapping (no associated file) */
{
if (!size || (protect & VPROT_IMAGE))
{
set_error( STATUS_INVALID_PARAMETER );
mapping->file = NULL;
goto error;
}
if (!(mapping->file = create_temp_file( access ))) goto error;
if (!grow_file( mapping->file, size )) goto error;
}
mapping->size = (size + page_mask) & ~((file_pos_t)page_mask);
mapping->protect = protect;
return &mapping->obj;
error:
release_object( mapping );
return NULL;
}
// create or display environment variables or aliases
static int _fastcall __Set( LPTSTR pszCmdLine, TCHAR _far * pchList )
{
LPTSTR pszArg;
long fSet = 0L;
TCHAR _far *lpszVars;
init_page_size();
// set the pointer to the environment, alias, or function list
// strip leading switches
if (( pszCmdLine != NULL ) && ( *pszCmdLine == gpIniptr->SwChr )) {
if ( GetSwitches( pszCmdLine, "AMPR", &fSet, 1 ) != 0 )
return USAGE_ERR;
}
// check for master environment set
if (( pchList == glpEnvironment ) && ( fSet & SET_MASTER ))
pchList = glpMasterEnvironment;
// read environment or alias file(s)
if ( fSet & SET_READ )
return ( SetFromFile( pszCmdLine, pchList, fSet & ( SET_DEFAULT | SET_SYSTEM | SET_USER | SET_VOLATILE )));
if ( setjmp( cv.env ) == -1 )
return CTRLC;
// pause after each page
if ( fSet & SET_PAUSE ) {
gnPageLength = GetScrRows();
}
if (( pszCmdLine == NULL ) || ( *(pszCmdLine = skipspace( pszCmdLine )) == _TEXT('\0'))) {
// print all the variables or aliases
for ( lpszVars = pchList; ( *lpszVars != _TEXT('\0') ); lpszVars = next_env( lpszVars ) ) {
more_page( lpszVars, 0 );
}
// return an error if no entries exist
return (( lpszVars == pchList ) ? ERROR_LIST_EMPTY : 0 );
}
if ( fSet & SET_EXPRESSION ) {
if (( pszArg = strchr( pszCmdLine, _TEXT('=') )) != NULL ) {
if (( pszArg > pszCmdLine ) && ( strchr( _TEXT("+-*/%&^|><"), pszArg[-1] ) != NULL )) {
TCHAR szBuf[256];
// it's an assignment operator ("set /a test+=2")
sscanf( pszCmdLine, _TEXT(" %[^ +-*/%&^|><=]"), szBuf );
strcpy( pszArg, pszArg+1 );
strins( pszCmdLine, _TEXT("=") );
strins( pszCmdLine, szBuf );
pszArg = pszCmdLine + strlen( szBuf ) + 1;
} else
pszArg = skipspace( pszArg+1 );
} else
pszArg = pszCmdLine;
StripQuotes( pszArg );
evaluate( pszArg );
if ( cv.bn < 0 ) {
qputs( pszArg );
crlf();
}
// create/modify/delete a variable
return (( pszArg == pszCmdLine ) ? 0 : add_list( pszCmdLine, pchList ));
}
// display the current variable or alias argument?
// (setting environment vars requires a '='; it's optional with aliases)
if ((( pszArg = strchr( pszCmdLine, _TEXT('=') )) == NULL ) && (( pchList == 0L ) || ( ntharg( pszCmdLine, 0x8001 ) == NULL ))) {
if (( lpszVars = get_list( pszCmdLine, pchList )) == 0L ) {
return ERROR_NOT_IN_LIST;
}
printf( FMT_FAR_STR_CRLF, lpszVars );
return 0;
}
// create/modify/delete a variable or alias
return ( add_list( pszCmdLine, pchList ));
}