VHANGUP(2) Linux Programmer's Manual VHANGUP(2)
vhangup - virtually hangup the current terminal
#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)
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 set to indicate the error.
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 5.12 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 https://www.kernel.org/doc/man-pages/. Linux 2021-03-22 VHANGUP(2)
Pages that refer to this page: login(1), syscalls(2), capabilities(7), agetty(8)
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