NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | ERRORS | CONFORMING TO | SEE ALSO | COLOPHON

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

NAME         top

       vhangup - virtually hangup the current tty

SYNOPSIS         top

       #include <unistd.h>

       int vhangup(void);

   Feature Test Macro Requirements for glibc (see feature_test_macros(7)):

       vhangup(): _BSD_SOURCE || (_XOPEN_SOURCE && _XOPEN_SOURCE < 500)

DESCRIPTION         top

       vhangup() simulates a hangup on the current terminal.  This call arranges for
       other users to have a "clean" tty at login time.

RETURN VALUE         top

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

ERRORS         top

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

CONFORMING TO         top

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

SEE ALSO         top

       capabilities(7), init(8)

COLOPHON         top

       This page is part of release 3.23 of the Linux man-pages project.  A
       description of the project, and information about reporting bugs, can be found
       at http://www.kernel.org/doc/man-pages/.

Linux                                 2007-07-26                           VHANGUP(2)