vhangup(2)

1vhangup(2)                    System Calls Manual                   vhangup(2)
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NAME

6       vhangup - virtually hangup the current terminal
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LIBRARY

9       Standard C library (libc, -lc)
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SYNOPSIS

12       #include <unistd.h>
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14       int vhangup(void);
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16   Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
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18       vhangup():
19           Since glibc 2.21:
20               _DEFAULT_SOURCE
21           In glibc 2.19 and 2.20:
22               _DEFAULT_SOURCE || (_XOPEN_SOURCE && _XOPEN_SOURCE < 500)
23           Up to and including glibc 2.19:
24               _BSD_SOURCE || (_XOPEN_SOURCE && _XOPEN_SOURCE < 500)
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DESCRIPTION

27       vhangup()  simulates  a  hangup on the current terminal.  This call ar‐
28       ranges for other users to have a “clean” terminal at login time.
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RETURN VALUE

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

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

39       Linux.
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