|TCFLOW(3C)||Standard C Library Functions||TCFLOW(3C)|
#include <termios.h> int tcflow(int fildes, int action);
The tcflow() function suspends transmission or reception of data on the object referred to by fildes, depending on the value of action. The fildes argument is an open file descriptor associated with a terminal.
The default on the opening of a terminal file is that neither its input nor its output are suspended.
Attempts to use tcflow() 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 tcflow() function will fail if:
The tcflow() function may fail if:
See attributes(7) for descriptions of the following attributes:
|ATTRIBUTE TYPE||ATTRIBUTE VALUE|
|MT-Level||MT-Safe, and Async-Signal-Safe|
|August 14, 2002||OmniOS|