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 & nbsp; < &nbsp; 500)
        Up to and including glibc 2.19 : _BSD_SOURCE
                                         ||
                                         (_XOPEN_SOURCE && _XOPEN_SOURCE & nbsp; < &nbsp; 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)

COLOPHON

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