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authorAdhemerval Zanella <adhemerval.zanella@linaro.org>2017-07-10 15:53:32 -0300
committerAdhemerval Zanella <adhemerval.zanella@linaro.org>2017-07-11 11:06:44 -0300
commit94070f86c0c849c71ed2e7e2189bb4d1f7411a17 (patch)
treea7de3d544fc1d3cb5a2b211e0d80b6daf6e93800 /manual
parent2a91300176a5991d9825eba085e502196a3f47cd (diff)
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posix: Add p{read,write}v2 RWF_NOWAIT flag (BZ#21738)
Linux 4.12 (b745fafaf70c0a98a2e1e7ac8cb14542889ceb0e) adds a new p{read,write}v2 flag RWF_NOWAIT. This patch adds it for linux uio-ext.h header. Checked on x86_64-linux-gnu (on a 4.10 kernel). [BZ #21738] * manual/llio.texi (RWF_NOWAIT): New item. * misc/tst-preadvwritev2-common.c (do_test_with_invalid_flags): Add RWF_NOWAIT check. * sysdeps/unix/sysv/linux/bits/uio-ext.h (RWF_NOWAIT): New flag.
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 ba1f455dfd..e72c53c785 100644
--- a/manual/llio.texi
+++ b/manual/llio.texi
@@ -770,6 +770,10 @@ Per-IO synchronization as if the file was opened with @code{O_DSYNC} flag.
@item RWF_SYNC
Per-IO synchronization as if the file was opened with @code{O_SYNC} flag.
+
+@item RWF_NOWAIT
+Use nonblocking mode for this operation; that is, this call to @code{preadv2}
+will fail and set @code{errno} to @code{EAGAIN} if the operation would block.
@end vtable
When the source file is compiled with @code{_FILE_OFFSET_BITS == 64} the