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 terminal

SYNOPSIS         top

       #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         top

       vhangup() simulates a hangup on the current terminal.  This call
       arranges for other users to have a “clean” terminal 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

       init(1), capabilities(7)

COLOPHON         top

       This page is part of release 4.12 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)

Pages that refer to this page: syscalls(2),  capabilities(7)