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Message-ID: <20141206011802.19570.qmail@ns.horizon.com>
Date: 5 Dec 2014 20:18:02 -0500
From: "George Spelvin" <linux@...izon.com>
To: akpm@...ux-foundation.org
Cc: linux@...izon.com, linux-kernel@...r.kernel.org,
rdunlap@...radead.org, rusty@...tcorp.com.au
Subject: [PATCH] [PATCH] VERIFY_OCTAL_PERMISSIONS: Move to <linux/sysfs.h> where it belongs
> VERIFY_OCTAL_PERMISSIONS() sticks out like a sore thumb in kernel.h.
> How about we move it into sysfs.h?
Something like this, you mean?
The <linux/types.h> in moduleparam.h is needed for one function
prototype that passes s16 parameters. My first reaction is
to wonder if that can be gotten rid of, too.
-----
It's the only user of <linux/bug.h> in kernel.h, so that reduces
the compile-time cost of #include <linux/kernel.h>
One necessary consequent change in <linux/moduleparam.h>.
Suggested-by: Andrew Morton <akpm@...ux-foundation.org>
Signed-off-by: George Spelvin <linux@...izon.com>
---
include/linux/kernel.h | 10 ----------
include/linux/sysfs.h | 11 +++++++++++
include/linux/moduleparam.h | 4 ++--
3 files changed, 13 insertions(+), 12 deletions(-)
diff --git a/include/linux/kernel.h b/include/linux/kernel.h
index 3d770f55..07080aa2 100644
--- a/include/linux/kernel.h
+++ b/include/linux/kernel.h
@@ -804,14 +804,4 @@ static inline void ftrace_dump(enum ftrace_dump_mode oops_dump_mode) { }
# define REBUILD_DUE_TO_FTRACE_MCOUNT_RECORD
#endif
-/* Permissions on a sysfs file: you didn't miss the 0 prefix did you? */
-#define VERIFY_OCTAL_PERMISSIONS(perms) \
- (BUILD_BUG_ON_ZERO((perms) < 0) + \
- BUILD_BUG_ON_ZERO((perms) > 0777) + \
- /* User perms >= group perms >= other perms */ \
- BUILD_BUG_ON_ZERO(((perms) >> 6) < (((perms) >> 3) & 7)) + \
- BUILD_BUG_ON_ZERO((((perms) >> 3) & 7) < ((perms) & 7)) + \
- /* Other writable? Generally considered a bad idea. */ \
- BUILD_BUG_ON_ZERO((perms) & 2) + \
- (perms))
#endif
diff --git a/include/linux/sysfs.h b/include/linux/sysfs.h
index f97d0dbb..9f213542 100644
--- a/include/linux/sysfs.h
+++ b/include/linux/sysfs.h
@@ -70,6 +70,17 @@ struct attribute_group {
* for examples..
*/
+/* Permissions on a sysfs file: you didn't miss the 0 prefix did you? */
+#define VERIFY_OCTAL_PERMISSIONS(perms) \
+ (BUILD_BUG_ON_ZERO((perms) < 0) + \
+ BUILD_BUG_ON_ZERO((perms) > 0777) + \
+ /* User perms >= group perms >= other perms */ \
+ BUILD_BUG_ON_ZERO(((perms) >> 6) < (((perms) >> 3) & 7)) + \
+ BUILD_BUG_ON_ZERO((((perms) >> 3) & 7) < ((perms) & 7)) + \
+ /* Other writable? Generally considered a bad idea. */ \
+ BUILD_BUG_ON_ZERO((perms) & 2) + \
+ (perms))
+
#define __ATTR(_name, _mode, _show, _store) { \
.attr = {.name = __stringify(_name), \
.mode = VERIFY_OCTAL_PERMISSIONS(_mode) }, \
diff --git a/include/linux/moduleparam.h b/include/linux/moduleparam.h
index 1c9effa2..974097df 100644
--- a/include/linux/moduleparam.h
+++ b/include/linux/moduleparam.h
@@ -1,9 +1,9 @@
#ifndef _LINUX_MODULE_PARAMS_H
#define _LINUX_MODULE_PARAMS_H
/* (C) Copyright 2001, 2002 Rusty Russell IBM Corporation */
-#include <linux/init.h>
#include <linux/stringify.h>
-#include <linux/kernel.h>
+#include <linux/sysfs.h>
+#include <linux/types.h>
/* You can override this manually, but generally this should match the
module name. */
--
2.1.3
--
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