vhangup(2) - Linux man page

Name

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(): _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.

Conforming To

This call is Linux-specific, and should not be used in programs intended to be portable.

See Also

capabilities(7), init(8)