pwrite(2): add a BUGS section
Add a BUGS section about using pwrite(2) when O_APPEND is set on the fd. MFC after: 3 days Submitted by: Ka Ho Ng <khng300@gmail.com> Reviewed by: gbe, yuripv Differential Revision: https://reviews.freebsd.org/D28372
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@ -28,7 +28,7 @@
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.\" @(#)write.2 8.5 (Berkeley) 4/2/94
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.\" $FreeBSD$
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.\"
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.Dd October 25, 2020
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.Dd February 11, 2021
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.Dt WRITE 2
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.Os
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.Sh NAME
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@ -298,3 +298,17 @@ The
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.Fn write
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function appeared in
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.At v1 .
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.Sh BUGS
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The
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.Fn pwrite
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system call appends the file without changing the file offset if
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.Dv O_APPEND
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is set, contrary to
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.St -p1003.1-2008
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where
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.Fn pwrite
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writes into
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.Fa offset
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regardless of whether
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.Dv O_APPEND
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is set.
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