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Fix the man page to correctly describe the use of the "len" argument.

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The man page incorrectly described the use of the"len" argument, which
is updated to the number of bytes copied and not reduced by the number
of bytes copied.

This is a content change.
This commit is contained in:
Rick Macklem 2019-11-08 06:40:17 +00:00
parent 55073c7837
commit b2ea509012
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=354528
1 changed files with 6 additions and 6 deletions
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12
share/man/man9/VOP_COPY_FILE_RANGE.9
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@ -25,7 +25,7 @@
.\"
.\" $FreeBSD$
.\"
.Dd July 24, 2019
.Dd November 7, 2019
.Dt VOP_COPY_FILE_RANGE 9
.Os
.Sh NAME
@ -60,7 +60,7 @@ The vnode of the output file.
.It Fa outoff
A pointer to the file offset for the output file.
.It Fa len
A pointer to the number of bytes to be copied.
A pointer to the byte count for the copy.
.It Fa flags
Flags, should be set to 0 for now.
.It Fa incred
@ -89,11 +89,11 @@ The
.Fa len
argument points to the location that stores the number of bytes
to be copied.
It should be reduced by the number of bytes copied, which implies that
the value pointed to by
Upon a successful return
.Fa len
will normally be zero for a non-error return.
However, a copy of fewer bytes than requested is permitted.
will be updated to the number of bytes actually copied.
Normally, this will be the number of bytes requested to be copied,
however a copy of fewer bytes than requested is permitted.
.Sh LOCKS
The vnode are unlocked on entry and must be unlocked on return.
The byte ranges for both