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sendfile.2: Clarify behavior when offset is NULL 

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
This commit is contained in:
Michael Kerrisk 2010-02-15 05:26:45 +01:00
parent d6f53dcc30
commit 5227ef33b5
1 changed files with 8 additions and 1 deletions
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9
man2/sendfile.2
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@ -12,7 +12,7 @@
.\"
.\" 2005-03-31 Martin Pool <mbp@sourcefrog.net> mmap() improvements
.\"
.TH SENDFILE 2 2004-12-17 "Linux" "Linux Programmer's Manual"
.TH SENDFILE 2 2010-02-15 "Linux" "Linux Programmer's Manual"
.SH NAME
sendfile \- transfer data between file descriptors
.SH SYNOPSIS
@ -77,6 +77,13 @@ otherwise the current file offset is adjusted to reflect
the number of bytes read from
.IR in_fd .
If
.I offset
is NULL, then data will be read from
.IR in_fd
starting at the current file offset,
and the file offset will be updated by the call.
.I count
is the number of bytes to copy between the file descriptors.