centos man page for fclose

Query: fclose

OS: centos

Section: 3

Format: Original Unix Latex Style Formatted with HTML and a Horizontal Scroll Bar

FCLOSE(3)						     Linux Programmer's Manual							 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.
RETURN VALUE
Upon successful completion 0 is returned. Otherwise, EOF is returned and 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 3.53 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/.
GNU
2009-02-23 FCLOSE(3)
Related Man Pages
fclose_unlocked(3) - osf1
fflush(3) - osf1
fclose(3) - xfree86
fflush(3) - plan9
fclose(3) - plan9
Similar Topics in the Unix Linux Community
Precaution to access user mode buffers from kernel