vhangup - virtually hangup the current terminal
Feature Test Macro Requirements for glibc (see feature_test_macros
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)
() 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
- 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