vhangup

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 5.04 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)