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* Add Linux 4.13 constants to bits/fcntl-linux.h
@ 2017-09-07 21:06 Joseph Myers
  2017-09-08 11:45 ` Dmitry V. Levin
  0 siblings, 1 reply; 2+ messages in thread
From: Joseph Myers @ 2017-09-07 21:06 UTC (permalink / raw)
  To: libc-alpha

This patch, relative to a tree with
<https://sourceware.org/ml/libc-alpha/2017-09/msg00266.html> (pending
review) applied (but with only trivial dependence on that patch by
virtue of changing adjacent code), adds new interfaces (F_GET_RW_HINT
etc., and associated RW[FH]_WRITE_LIFE_*) from Linux 4.13 to
bits/fcntl-linux.h (conditional on __USE_GNU).

Tested for x86_64.

2017-09-07  Joseph Myers  <joseph@codesourcery.com>

	* sysdeps/unix/sysv/linux/bits/fcntl-linux.h [__USE_GNU]
	(F_GET_RW_HINT): New macro.
	[__USE_GNU] (F_SET_RW_HINT): Likewise.
	[__USE_GNU] (F_GET_FILE_RW_HINT): Likewise.
	[__USE_GNU] (F_SET_FILE_RW_HINT): Likewise.
	[__USE_GNU] (RWF_WRITE_LIFE_NOT_SET): Likewise.
	[__USE_GNU] (RWH_WRITE_LIFE_NONE): Likewise.
	[__USE_GNU] (RWH_WRITE_LIFE_SHORT): Likewise.
	[__USE_GNU] (RWH_WRITE_LIFE_MEDIUM): Likewise.
	[__USE_GNU] (RWH_WRITE_LIFE_LONG): Likewise.
	[__USE_GNU] (RWH_WRITE_LIFE_EXTREME): Likewise.

diff --git a/sysdeps/unix/sysv/linux/bits/fcntl-linux.h b/sysdeps/unix/sysv/linux/bits/fcntl-linux.h
index fc65fc2..0c1a303 100644
--- a/sysdeps/unix/sysv/linux/bits/fcntl-linux.h
+++ b/sysdeps/unix/sysv/linux/bits/fcntl-linux.h
@@ -204,6 +204,11 @@
 # define F_GETPIPE_SZ	1032	/* Set pipe page size array.  */
 # define F_ADD_SEALS	1033	/* Add seals to file.  */
 # define F_GET_SEALS	1034	/* Get seals for file.  */
+/* Set / get write life time hints.  */
+# define F_GET_RW_HINT	1035
+# define F_SET_RW_HINT	1036
+# define F_GET_FILE_RW_HINT	1037
+# define F_SET_FILE_RW_HINT	1038
 #endif
 #ifdef __USE_XOPEN2K8
 # define F_DUPFD_CLOEXEC 1030	/* Duplicate file descriptor with
@@ -281,6 +286,16 @@ struct f_owner_ex
 # define F_SEAL_WRITE	0x0008	/* Prevent writes.  */
 #endif
 
+#ifdef __USE_GNU
+/* Hint values for F_{GET,SET}_RW_HINT.  */
+# define RWF_WRITE_LIFE_NOT_SET	0
+# define RWH_WRITE_LIFE_NONE	1
+# define RWH_WRITE_LIFE_SHORT	2
+# define RWH_WRITE_LIFE_MEDIUM	3
+# define RWH_WRITE_LIFE_LONG	4
+# define RWH_WRITE_LIFE_EXTREME	5
+#endif
+
 /* Define some more compatibility macros to be backward compatible with
    BSD systems which did not managed to hide these kernel macros.  */
 #ifdef	__USE_MISC

-- 
Joseph S. Myers
joseph@codesourcery.com

^ permalink raw reply	[flat|nested] 2+ messages in thread

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2017-09-07 21:06 Add Linux 4.13 constants to bits/fcntl-linux.h Joseph Myers
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