diff options
| author | Guangyuan Yang <ygy@FreeBSD.org> | 2021-02-20 08:03:15 +0000 |
|---|---|---|
| committer | Guangyuan Yang <ygy@FreeBSD.org> | 2021-02-20 08:05:43 +0000 |
| commit | 504e64af32ba6c62fdcc894a3b1da76061c64796 (patch) | |
| tree | ef63040b247c4987d0971ce043a6e306c98e61db | |
| parent | 150fc89a12a7e41b8e7f5777d2ed762f7e40ea92 (diff) | |
| download | src-504e64af32ba6c62fdcc894a3b1da76061c64796.tar.gz src-504e64af32ba6c62fdcc894a3b1da76061c64796.zip | |
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
| -rw-r--r-- | lib/libc/sys/write.2 | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/lib/libc/sys/write.2 b/lib/libc/sys/write.2 index f05db0de81c4..937e95b53a14 100644 --- a/lib/libc/sys/write.2 +++ b/lib/libc/sys/write.2 @@ -28,7 +28,7 @@ .\" @(#)write.2 8.5 (Berkeley) 4/2/94 .\" $FreeBSD$ .\" -.Dd October 25, 2020 +.Dd February 11, 2021 .Dt WRITE 2 .Os .Sh NAME @@ -298,3 +298,17 @@ The .Fn write function appeared in .At v1 . +.Sh BUGS +The +.Fn pwrite +system call appends the file without changing the file offset if +.Dv O_APPEND +is set, contrary to +.St -p1003.1-2008 +where +.Fn pwrite +writes into +.Fa offset +regardless of whether +.Dv O_APPEND +is set. |