vhangup man page

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)

Colophon

This page is part of release 4.08 of the Linux man-pages project. A description of the project, information about reporting bugs, and the latest version of this page, can be found at https://www.kernel.org/doc/man-pages/.

Referenced By

capabilities(7), syscalls(2).

2016-03-15 Linux Linux Programmer's Manual