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VHANGUP(2) Linux Programmer's Manual VHANGUP(2)

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():
         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 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

     init(1), capabilities(7)

COLOPHON

     This  page  is  part of release 4.16 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 2016-03-15 VHANGUP(2)