fcloseall(3) Library Functions Manual fcloseall(3)
NAME
fcloseall - close all open streams
LIBRARY
Standard C library (libc, -lc)
SYNOPSIS
#define _GNU_SOURCE /* See feature_test_macros(7) */
#include <stdio.h>
int fcloseall(void);
DESCRIPTION
The fcloseall() function closes all of the calling process's open
streams. Buffered output for each stream is written before it is
closed (as for fflush(3)); buffered input is discarded.
The standard streams, stdin, stdout, and stderr are also closed.
RETURN VALUE
This function returns 0 if all files were successfully closed; on er-
ror, EOF is returned.
ATTRIBUTES
For an explanation of the terms used in this section, see at-
tributes(7).
┌─────────────────────────────┬───────────────┬────────────────────────┐
│Interface │ Attribute │ Value │
├─────────────────────────────┼───────────────┼────────────────────────┤
│fcloseall() │ Thread safety │ MT-Unsafe race:streams │
└─────────────────────────────┴───────────────┴────────────────────────┘
The fcloseall() function does not lock the streams, so it is not
thread-safe.
STANDARDS
This function is a GNU extension.
SEE ALSO
close(2), fclose(3), fflush(3), fopen(3), setbuf(3)
Linux man-pages 6.03 2022-12-15 fcloseall(3)
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