1VHANGUP(2)                 Linux Programmer's Manual                VHANGUP(2)
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NAME

6       vhangup - virtually hangup the current tty
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SYNOPSIS

9       #include <unistd.h>
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11       int vhangup(void);
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DESCRIPTION

14       vhangup()  simulates  a  hangup  on  the  current  terminal.  This call
15       arranges for other users to have a “clean” tty at login time.
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RETURN VALUE

18       On success, zero is returned.  On error, -1 is returned, and  errno  is
19       set appropriately.
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ERRORS

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

26       This call is Linux  specific,  and  should  not  be  used  in  programs
27       intended to be portable.
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SEE ALSO

30       capabilities(7), init(8)
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34Linux 2.6.6                       2004-05-27                        VHANGUP(2)