NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | ERRORS | CONFORMING TO | SEE ALSO | COLOPHON |
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 appropriately.
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.
init(1), capabilities(7)
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Linux 2016-03-15 VHANGUP(2)
Pages that refer to this page: syscalls(2), capabilities(7)