NAME

       vhangup - virtually hangup the current terminal

LIBRARY

       Standard C library (libc, -lc)

SYNOPSIS

       #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)

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 to indicate  the
       error.

ERRORS

       EPERM  The   calling   process   has   insufficient   privilege  to  call  vhangup();  the
              CAP_SYS_TTY_CONFIG capability is required.

STANDARDS

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

SEE ALSO

       init(1), capabilities(7)