vhangup (2)

NAME

vhangup - virtually hangup the current terminal

SYNOPSIS

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

Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
vhangup():
 Since glibc 2.21: _DEFAULT_SOURCE In glibc 2.19 and 2.20: _DEFAULT_SOURCE || (_XOPEN_SOURCE && _XOPEN_SOURCE < 500) Up to and including glibc 2.19: _BSD_SOURCE || (_XOPEN_SOURCE && _XOPEN_SOURCE < 500)

DESCRIPTION

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

RETURN VALUE

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

ERRORS

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

CONFORMING TO

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

SEE ALSO

init(1), capabilities(7)

Information

Source
Linux kernel
OS/version
Linux
Source updated
March 15, 2016
Page created
February 9, 2018
Page generated
December 2, 2018