DragonFly On-Line Manual Pages


FCLOSE(3)	      DragonFly Library Functions Manual	     FCLOSE(3)

NAME

fclose, fcloseall -- close a stream

LIBRARY

Standard C Library (libc, -lc)

SYNOPSIS

#include <stdio.h> int fclose(FILE *stream); void fcloseall(void);

DESCRIPTION

The fclose() function dissociates the named stream from its underlying file or set of functions. If the stream was being used for output, any buffered data is written first, using fflush(3). The fcloseall() function calls fclose() on all open streams.

RETURN VALUES

Upon successful completion 0 is returned. Otherwise, EOF is returned and the global variable errno is set to indicate the error. In either case no further access to the stream is possible.

ERRORS

The fclose() function may also fail and set errno for any of the errors specified for the routines close(2) or fflush(3).

NOTES

The fclose() function does not handle NULL arguments; they will result in a segmentation violation. This is intentional - it makes it easier to make sure programs written under DragonFly are bug free. This behaviour is an implementation detail, and programs should not rely upon it.

SEE ALSO

close(2), fflush(3), fopen(3), setbuf(3)

STANDARDS

The fclose() function conforms to ISO/IEC 9899:1990 (``ISO C90''). The fcloseall() function first appeared in DragonFly 2.3. DragonFly 3.7 April 22, 2006 DragonFly 3.7