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| EPERM | The calling process has insufficient privilege to call vhangup(); the CAP_SYS_TTY_CONFIG capability is required. |
NAME
vhangup - virtually hangup the current terminal
LIBRARY
Standard C library (libc, -lc)
SYNOPSIS
bash
#include <unistd.h>bash
int vhangup(void);vhangup():
bash
\n
Since glibc 2.21:
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_DEFAULT_SOURCE
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In glibc 2.19 and 2.20:
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_DEFAULT_SOURCE || (_XOPEN_SOURCE && _XOPEN_SOURCE < 500)
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Up to and including glibc 2.19:
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_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)