mirror of https://github.com/mkerrisk/man-pages
fsync.2: Update feature test macro requirements for fsync()
Since glibc 2.8, the fsync() declaration is also exposed if _POSIX_C_SOURCE >= 200112L Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
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@ -34,7 +34,7 @@
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.\" Fix description to describe what it really does; add a few caveats.
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.\" Fix description to describe what it really does; add a few caveats.
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.\" 2006-04-28, mtk, substantial rewrite of various parts.
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.\" 2006-04-28, mtk, substantial rewrite of various parts.
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.\"
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.\"
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.TH FSYNC 2 2007-07-26 "Linux" "Linux Programmer's Manual"
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.TH FSYNC 2 2008-11-07 "Linux" "Linux Programmer's Manual"
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.SH NAME
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.SH NAME
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fsync, fdatasync \- synchronize a file's in-core state with storage device
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fsync, fdatasync \- synchronize a file's in-core state with storage device
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.SH SYNOPSIS
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.SH SYNOPSIS
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@ -51,6 +51,9 @@ Feature Test Macro Requirements for glibc (see
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.sp
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.sp
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.BR fsync ():
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.BR fsync ():
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_BSD_SOURCE || _XOPEN_SOURCE
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_BSD_SOURCE || _XOPEN_SOURCE
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.br
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|| /* since glibc 2.8: */ _POSIX_C_SOURCE\ >=\ 200112L
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.\" _POSIX_C_SOURCE\ >=\ 200112L only since glibc 2.8
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.br
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.br
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.BR fdatasync ():
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.BR fdatasync ():
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_POSIX_C_SOURCE\ >=\ 199309L || _XOPEN_SOURCE\ >=\ 500
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_POSIX_C_SOURCE\ >=\ 199309L || _XOPEN_SOURCE\ >=\ 500
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