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Update RWF_SUPPORTED for Linux kernel 4.16 [BZ #22947]

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Add RWF_APPEND to RWF_SUPPORTED to support Linux kernel 4.16.

	[BZ #22947]
	* bits/uio-ext.h (RWF_APPEND): New.
	* sysdeps/unix/sysv/linux/bits/uio-ext.h (RWF_APPEND): Likewise.
	* manual/llio.texi: Document RWF_APPEND.
	* misc/tst-preadvwritev2-common.c (RWF_APPEND): New.
	(RWF_SUPPORTED): Add RWF_APPEND.
This commit is contained in:
H.J. Lu 2018-04-03 12:19:20 -07:00
parent d2dc5467c6
commit f2652643d7
5 changed files with 19 additions and 1 deletions
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9
ChangeLog
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@ -1,3 +1,12 @@
2018-04-03 H.J. Lu <hongjiu.lu@intel.com>
[BZ #22947]
* bits/uio-ext.h (RWF_APPEND): New.
* sysdeps/unix/sysv/linux/bits/uio-ext.h (RWF_APPEND): Likewise.
* manual/llio.texi: Document RWF_APPEND.
* misc/tst-preadvwritev2-common.c (RWF_APPEND): New.
(RWF_SUPPORTED): Add RWF_APPEND.
2018-04-03 Adhemerval Zanella <adhemerval.zanella@linaro.org>
[BZ #22391]

1
bits/uio-ext.h
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@ -28,5 +28,6 @@
#define RWF_DSYNC 0x00000002 /* per-IO O_DSYNC. */
#define RWF_SYNC 0x00000004 /* per-IO O_SYNC. */
#define RWF_NOWAIT 0x00000008 /* per-IO nonblocking mode. */
#define RWF_APPEND 0x00000010 /* per-IO O_APPEND. */
#endif /* sys/uio_ext.h */

3
manual/llio.texi
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@ -1275,6 +1275,9 @@ 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.
@item RWF_APPEND
Per-IO synchronization as 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

6
misc/tst-preadvwritev2-common.c
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@ -34,7 +34,11 @@ do_test_with_invalid_flags (void)
#ifndef RWF_NOWAIT
# define RWF_NOWAIT 0
#endif
#define RWF_SUPPORTED (RWF_HIPRI | RWF_DSYNC | RWF_SYNC | RWF_NOWAIT)
#ifndef RWF_APPEND
# define RWF_APPEND 0
#endif
#define RWF_SUPPORTED (RWF_HIPRI | RWF_DSYNC | RWF_SYNC | RWF_NOWAIT \
| RWF_APPEND)
/* Set the next bit from the mask of all supported flags. */
int invalid_flag = RWF_SUPPORTED != 0 ? __builtin_clz (RWF_SUPPORTED) : 2;
invalid_flag = 0x1 << ((sizeof (int) * CHAR_BIT) - invalid_flag);

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_DSYNC 0x00000002 /* per-IO O_DSYNC. */
#define RWF_SYNC 0x00000004 /* per-IO O_SYNC. */
#define RWF_NOWAIT 0x00000008 /* per-IO nonblocking mode. */
#define RWF_APPEND 0x00000010 /* per-IO O_APPEND. */
__END_DECLS