vhangup(2) System Calls Manual vhangup(2) vhangup - C (libc, -lc) #include int vhangup(void); glibc (. feature_test_macros(7)): vhangup(): glibc 2.21: _DEFAULT_SOURCE glibc 2.19 2.20: _DEFAULT_SOURCE || (_XOPEN_SOURCE && _XOPEN_SOURCE < 500) glibc 2.19, : _BSD_SOURCE || (_XOPEN_SOURCE && _XOPEN_SOURCE < 500) vhangup() . , . 0. -1, errno . EPERM vhangup(); CAP_SYS_TTY_CONFIG. Linux. init(1), capabilities(7) () Azamat Hackimov , Dmitriy Ovchinnikov , Dmitry Bolkhovskikh , Katrin Kutepova , Yuri Kozlov , Kirill Rekhov ; GNU (GNU General Public License - GPL, 3 ) , - . - , , () () () <>. Linux 6.15 17 2025 . vhangup(2)