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Add Linux 4.13 constants to bits/fcntl-linux.h
- From: Joseph Myers <joseph at codesourcery dot com>
- To: <libc-alpha at sourceware dot org>
- Date: Thu, 7 Sep 2017 21:06:18 +0000
- Subject: Add Linux 4.13 constants to bits/fcntl-linux.h
- Authentication-results: sourceware.org; auth=none
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