NAME

       fcloseall - close all open streams

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 error, EOF is returned.

ATTRIBUTES

       For an explanation of the terms used in this section, see attributes(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.

CONFORMING TO

       This function is a GNU extension.

SEE ALSO

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

COLOPHON

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       https://www.kernel.org/doc/man-pages/.

GNU                                                2017-09-15                                       FCLOSEALL(3)