plucky (2) vhangup.2.gz

NAME

       vhangup - virtually hangup the current terminal

LIBRARY

       Standard C library (libc, -lc)

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 to indicate the error.

ERRORS

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

STANDARDS

       Linux.

SEE ALSO

       init(1), capabilities(7)