fcloseall(3) - Linux manual page (original) (raw)

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)](../man3/fflush.3.html)); 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)](../man7/attributes.7.html).
   ┌───────────────────────┬───────────────┬────────────────────────┐
   │ **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)](../man2/close.2.html), [fclose(3)](../man3/fclose.3.html), [fflush(3)](../man3/fflush.3.html), [fopen(3)](../man3/fopen.3.html), [setbuf(3)](../man3/setbuf.3.html)

COLOPHON top

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Linux man-pages 6.10 2024-07-23 fcloseall(3)

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