mirror of https://github.com/mkerrisk/man-pages
lseek.2: Note which filesystems support SEEK_HOLE/SEEK_DATA
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
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man2/lseek.2
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man2/lseek.2
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.\" Modified 2003-08-21 by Andries Brouwer <aeb@cwi.nl>
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.\" Modified 2003-08-21 by Andries Brouwer <aeb@cwi.nl>
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.\" 2011-09-18, mtk, Added SEEK_DATA + SEEK_HOLE
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.\" 2011-09-18, mtk, Added SEEK_DATA + SEEK_HOLE
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.\"
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.\"
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.TH LSEEK 2 2013-03-27 "Linux" "Linux Programmer's Manual"
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.TH LSEEK 2 2014-01-22 "Linux" "Linux Programmer's Manual"
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.SH NAME
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.SH NAME
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lseek \- reposition read/write file offset
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lseek \- reposition read/write file offset
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.SH SYNOPSIS
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.SH SYNOPSIS
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@ -159,6 +159,23 @@ and
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.BR SEEK_HOLE
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.BR SEEK_HOLE
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from
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from
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.IR <unistd.h> .
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.IR <unistd.h> .
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The
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.BR SEEK_HOLE
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and
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.BR SEEK_DATA
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operations are supported for the following filesystems:
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.IP * 3
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Btrfs (since Linux 3.1)
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.IP * 3
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OCFS (since Linux 3.2)
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.IP *
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XFS (since Linux 3.5)
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.IP *
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ext4 (since Linux 3.8)
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.IP *
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tmpfs (since Linux 3.8)
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.SH RETURN VALUE
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.SH RETURN VALUE
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Upon successful completion,
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Upon successful completion,
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.BR lseek ()
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.BR lseek ()
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