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25 .TH FCLOSEALL 3 2021-03-22 "GNU" "Linux Programmer's Manual"
27 fcloseall \- close all open streams
30 .BR "#define _GNU_SOURCE" " /* See feature_test_macros(7) */"
33 .B int fcloseall(void);
38 function closes all of the calling process's open streams.
39 Buffered output for each stream is written before it is closed
42 buffered input is discarded.
51 This function returns 0 if all files were successfully closed;
56 For an explanation of the terms used in this section, see
64 Interface Attribute Value
67 T} Thread safety MT-Unsafe race:streams
75 function does not lock the streams, so it is not thread-safe.
77 This function is a GNU extension.