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attributes.7: Rewrite introduction
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
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@ -26,17 +26,15 @@ attributes \- POSIX safety concepts
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.SH DESCRIPTION
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.\"
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.\"
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.SS POSIX safety concepts
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This manual documents various safety properties of GNU C Library
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functions, in lines that follow their prototypes and look like:
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.IR Note :
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the text of this man page is based on the material taken from
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the "POSIX Safety Concepts" section of the GNU C Library manual.
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Further details on the topics described here can be found in that
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manual.
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@sampsafety{@prelim{}@mtsafe{}@assafe{}@acsafe{}}
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The properties are assessed according to the criteria set forth in the
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POSIX standard for such safety contexts as
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Thread-Safety, Async-Signal-Safety and Async-Cancel-Safety.
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Intuitive definitions of these properties,
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attempting to capture the meaning of the standard definitions, follow.
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Various function manual pages include a section ATTRIBUTES
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that describes the safety of calling the function in various contexts.
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This section annotates functions with the following safety markings:
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.TP
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.I MT-Safe
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.I MT-Safe
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