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vhangup(2) — Linux manual page

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

 This page is part of the man-pages (Linux kernel and C library
 user-space interface documentation) project. Information about
 the project can be found at 
 ⟨https://www.kernel.org/doc/man-pages/⟩. If you have a bug report
 for this manual page, see
 ⟨https://git.kernel.org/pub/scm/docs/man-pages/man-pages.git/tree/CONTRIBUTING⟩.
 This page was obtained from the tarball man-pages-6.10.tar.gz
 fetched from
 ⟨https://mirrors.edge.kernel.org/pub/linux/docs/man-pages/⟩ on
 2025年02月02日. If you discover any rendering problems in this HTML
 version of the page, or you believe there is a better or more up-
 to-date source for the page, or you have corrections or
 improvements to the information in this COLOPHON (which is not
 part of the original manual page), send a mail to
 man-pages@man7.org
Linux man-pages 6.10 2024年07月23日 vhangup(2)

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

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