vhangup(2) — Linux manual page

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 to indicate the error.

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 5.11 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                          2021-03-22                     VHANGUP(2)

Pages that refer to this page: login(1)syscalls(2)capabilities(7)