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vhangup(2) — Linux manual page

NAME | LIBRARY | SYNOPSIS | DESCRIPTION | RETURN VALUE | ERRORS | STANDARDS | SEE ALSO | COLOPHON 

vhangup(2)                 System Calls Manual                vhangup(2)

NAME         top

       vhangup - virtually hangup the current terminal

LIBRARY         top

       Standard C library (libc, -lc)

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.

STANDARDS         top

       Linux.

SEE ALSO         top

       init(1), capabilities(7)

COLOPHON         top

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Linux man-pages 6.9.1          2024-05-02                     vhangup(2)

Pages that refer to this page: login(1),  syscalls(2),  capabilities(7),  agetty(8)

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