mirror of https://github.com/mkerrisk/man-pages
ioperm.2: Clarify meaning of 'turn_on' argument
Plus form formatting fixes. Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
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@ -45,9 +45,16 @@ ioperm \- set port input/output permissions
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.SH DESCRIPTION
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.BR ioperm ()
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sets the port access permission bits for the calling thread for
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\fInum\fP bits starting from port address \fIfrom\fP to the value
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\fIturn_on\fP.
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If \fIturn_on\fP is nonzero, the calling thread must be privileged
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.I num
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bits starting from port address
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.IR from .
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If
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.I turn_on
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is nonzero, then permission for the specified bits is enabled;
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otherwise it is disabled.
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If
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.I turn_on
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is nonzero, the calling thread must be privileged
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.RB ( CAP_SYS_RAWIO ).
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Before Linux 2.6.8,
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