fcloseall(3) — Linux manual page

fcloseall(3)            Library Functions Manual            fcloseall(3)

NAME         top

       fcloseall - close all open streams

LIBRARY         top

       Standard C library (libc, -lc)

SYNOPSIS         top

       #define _GNU_SOURCE         /* See feature_test_macros(7) */
       #include <stdio.h>

       int fcloseall(void);

DESCRIPTION         top

       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         top

       This function returns 0 if all files were successfully closed; on
       error, EOF is returned.

ATTRIBUTES         top

       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.

STANDARDS         top

       GNU.

SEE ALSO         top

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

Linux man-pages 6.04           2023-03-30                   fcloseall(3)

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