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authorStafford Horne <shorne@gmail.com>2024-04-03 06:40:37 +0100
committerStafford Horne <shorne@gmail.com>2024-04-04 09:41:27 +0100
commit3db9d208dd5f30b12900989c6d2214782b8e2011 (patch)
tree46199f73b1733382ec2cae1ad00e4e640d119d8b /manual
parent95c70fd0d467450e75354316453824693f07c3cc (diff)
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misc: Add support for Linux uio.h RWF_NOAPPEND flag
In Linux 6.9 a new flag is added to allow for Per-io operations to
disable append mode even if a file was opened with the flag O_APPEND.
This is done with the new RWF_NOAPPEND flag.

This caused two test failures as these tests expected the flag 0x00000020
to be unused.  Adding the flag definition now fixes these tests on Linux
6.9 (v6.9-rc1).

  FAIL: misc/tst-preadvwritev2
  FAIL: misc/tst-preadvwritev64v2

This patch adds the flag, adjusts the test and adds details to
documentation.

Link: https://lore.kernel.org/all/20200831153207.GO3265@brightrain.aerifal.cx/
Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>
Diffstat (limited to 'manual')
-rw-r--r--manual/llio.texi4
1 files changed, 4 insertions, 0 deletions
diff --git a/manual/llio.texi b/manual/llio.texi
index 0b61d491f5..fae49d1433 100644
--- a/manual/llio.texi
+++ b/manual/llio.texi
@@ -1339,6 +1339,10 @@ will fail and set @code{errno} to @code{EAGAIN} if the operation would block.
 
 @item RWF_APPEND
 Per-IO synchronization as if the file was opened with @code{O_APPEND} flag.
+
+@item RWF_NOAPPEND
+This flag allows an offset to be honored, even if the file was opened with
+@code{O_APPEND} flag.
 @end vtable
 
 When the source file is compiled with @code{_FILE_OFFSET_BITS == 64} the