vhangup (2) Linux Manual 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.