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

       This  page  is  part of release 4.15 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/.