VHANGUP(2) Linux Programmer's Manual VHANGUP(2)
vhangup - virtually hangup the current terminal
Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
Since glibc 2.21:
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)
vhangup() simulates a hangup on the current terminal. This call
arranges for other users to have a "clean" terminal at login time.
On success, zero is returned. On error, -1 is returned, and errno is
EPERM The calling process has insufficient privilege to call
vhangup(); the CAP_SYS_TTY_CONFIG capability is required.
This call is Linux-specific, and should not be used in programs
intended to be portable.
This page is part of release 4.15 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
Linux 2016-03-15 VHANGUP(2)
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