tcflush - flush non-transmitted output data, non-read input data or both
#include <termios.h> int tcflush(int fildes, int queue_selector);
Upon successful completion, tcflush() discards data written to the object referred to by fildes (an open file descriptor associated with a terminal) but not transmitted, or data received but not read, depending on the value of queue_selector:
Attempts to use tcflush() from a process which is a member of a background process group on a fildes associated with its controlling terminal, will cause the process group to be sent a SIGTTOU signal. If the calling process is blocking or ignoring SIGTTOU signals, the process is allowed to perform the operation, and no signal is sent.
Upon successful completion, 0 is returned. Otherwise, -1 is returned and errno is set to indicate the error.
The tcflush() function will fail if:
The tcflush() function may fail if:
See attributes(5) for descriptions of the following attributes:
tcdrain(3C), attributes(5), standards(5), termio(7I)
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Created 1996-2022 by Maxim Chirkov
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