Manpages - vhangup.2

vhangup - virtually hangup the current terminal

  #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)

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

On success, zero is returned. On error, -1 is returned, and errno is set to indicate the error.

EPERM

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

This call is Linux-specific, and should not be used in programs intended to be portable.

*init*(1), *capabilities*(7)

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