Man page - vhangup(2)

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Manual

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.

SEE ALSO

init (1), capabilities (7)