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NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | ERRORS | ATTRIBUTES | CONFORMING TO | NOTES | SEE ALSO | COLOPHON |
FCLOSE(3) Linux Programmer's Manual FCLOSE(3)
fclose - close a stream
#include <stdio.h>
int fclose(FILE *stream);
The fclose() function flushes the stream pointed to by stream
(writing any buffered output data using fflush(3)) and closes the
underlying file descriptor.
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.
EBADF The file descriptor underlying stream 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).
For an explanation of the terms used in this section, see
attributes(7).
┌──────────┬───────────────┬─────────┐
│Interface │ Attribute │ Value │
├──────────┼───────────────┼─────────┤
│fclose() │ Thread safety │ MT-Safe │
└──────────┴───────────────┴─────────┘
POSIX.1-2001, POSIX.1-2008, C89, C99.
Note that fclose() flushes only 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).
close(2), fcloseall(3), fflush(3), fileno(3), fopen(3), setbuf(3)
This page is part of release 4.12 of the Linux man-pages project. A
description of the project, information about reporting bugs, and the
latest version of this page, can be found at
https://www.kernel.org/doc/man-pages/.
GNU 2016-12-12 FCLOSE(3)
Pages that refer to this page: gawk(1), close(2), fcloseall(3), fflush(3), fmemopen(3), fopen(3), fopencookie(3), open_memstream(3), popen(3), setbuf(3), xdr(3)