VHANGUP(2) Linux Programmer's Manual VHANGUP(2)

vhangup - virtually hangup the current terminal

#include <unistd.h>
int vhangup(void);

Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
    Since glibc 2.21:
    In glibc 2.19 and 2.20:
    Up to and including glibc 2.19:

vhangup() simulates a hangup on the current terminal. This call arranges for other users to have a “clean” terminal at login time.

On success, zero is returned. On error, -1 is returned, and errno is set appropriately.

The calling process has insufficient privilege to call vhangup(); the CAP_SYS_TTY_CONFIG capability is required.

This call is Linux-specific, and should not be used in programs intended to be portable.

init(1), capabilities(7)
2016-03-15 Linux