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posix: Add p{read,write}v2 RWF_NOWAIT flag (BZ#21738)

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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.
This commit is contained in:
Adhemerval Zanella
2017-07-10 15:53:32 -03:00
parent 2a91300176
commit 94070f86c0
4 changed files with 18 additions and 10 deletions
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1
sysdeps/unix/sysv/linux/bits/uio-ext.h
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@ -46,6 +46,7 @@ extern ssize_t process_vm_writev (pid_t __pid, const struct iovec *__lvec,
#define RWF_HIPRI 0x00000001 /* High priority request. */
#define RWF_DSYNC 0x00000002 /* per-IO O_DSYNC. */
#define RWF_SYNC 0x00000004 /* per-IO O_SYNC. */
#define RWF_NOWAIT 0x00000008 /* per-IO nonblocking mode. */
__END_DECLS