fclose(3)
NAME
fclose - close a stream
SYNOPSIS
#include <stdio.h> int fclose(FILE *fp);
DESCRIPTION
The fclose() function flushes the stream pointed to by fp (writing any
buffered output data using fflush(3)) and closes the underlying file
descriptor.
The behaviour of fclose() is undefined if the stream parameter is an
illegal pointer, or is a descriptor already passed to a previous invocation of fclose().
RETURN VALUE
Upon successful completion 0 is returned. Otherwise, EOF is returned
and the global variable errno is set to indicate the error. In either
case any further access (including another call to fclose()) to the
stream results in undefined behavior.
ERRORS
EBADF The file descriptor underlying fp is not valid.
The fclose() function may also fail and set errno for any of the errors specified for the routines close(2), write(2) or fflush(3).
CONFORMING TO
C89, C99.
NOTES
Note that fclose() only flushes the user space buffers provided by the
C library. To ensure that the data is physically stored on disk the
kernel buffers must be flushed too, for example, with sync(2) or
fsync(2).
SEE ALSO
close(2), fcloseall(3), fflush(3), fopen(3), setbuf(3)
COLOPHON
- This page is part of release 3.25 of the Linux man-pages project. A
description of the project, and information about reporting bugs, can
be found at http://www.kernel.org/doc/man-pages/.