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| .TH FCLOSEALL 3 2017-09-15 "GNU" "Linux Programmer's Manual" |
| .SH NAME |
| fcloseall \- close all open streams |
| .SH SYNOPSIS |
| .nf |
| .BR "#define _GNU_SOURCE" " /* See feature_test_macros(7) */" |
| .B #include <stdio.h> |
| .PP |
| .B int fcloseall(void); |
| .fi |
| .SH DESCRIPTION |
| The |
| .BR fcloseall () |
| function closes all of the calling process's open streams. |
| Buffered output for each stream is written before it is closed |
| (as for |
| .BR fflush (3)); |
| buffered input is discarded. |
| .PP |
| The standard streams, |
| .IR stdin , |
| .IR stdout , |
| and |
| .I stderr |
| are also closed. |
| .SH RETURN VALUE |
| This function returns 0 if all files were successfully closed; |
| on error, |
| .B EOF |
| is returned. |
| .SH ATTRIBUTES |
| For an explanation of the terms used in this section, see |
| .BR attributes (7). |
| .TS |
| allbox; |
| lb lb lb |
| l l l. |
| Interface Attribute Value |
| T{ |
| .BR fcloseall () |
| T} Thread safety MT-Unsafe race:streams |
| .TE |
| .PP |
| The |
| .BR fcloseall () |
| function does not lock the streams, so it is not thread-safe. |
| .SH CONFORMING TO |
| This function is a GNU extension. |
| .SH SEE ALSO |
| .BR close (2), |
| .BR fclose (3), |
| .BR fflush (3), |
| .BR fopen (3), |
| .BR setbuf (3) |