Section 2 · System calls

vhangup.2

Package: man-pages

vhangup

NAME
LIBRARY
SYNOPSIS
DESCRIPTION
RETURN VALUE
ERRORS
STANDARDS
SEE ALSO

NAME

vhangup − virtually hangup the current terminal

LIBRARY

Standard C library (libc, −lc)

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 to indicate the error.

ERRORS


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

STANDARDS

Linux.