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tty_ioctl.4: Document TIOCSPTLCK
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
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@ -361,6 +361,15 @@ locally \fB^S\fP/\fB^Q\fP flow-controlled remote login.
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Return the current packet mode setting in the integer pointed to by
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.IR argp
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(since Linux 3.8).
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.TP
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.BI "TIOCSPTLCK int *" argp
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Set (if
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.IR *argp
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is nonzero) or remove (if
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.IR *argp
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is zero) the pseudoterminal slave device.
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(See also
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.BR unlockpt (3).)
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.PP
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The BSD ioctls
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.BR TIOCSTOP ,
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