linux-kernel - Re: [PATCH 00/23] Removal of binary sysctl support

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Date:	Mon, 09 Nov 2009 09:12:15 +0900
From:	Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp>
To:	ebiederm@...ssion.com
Cc:	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 00/23] Removal of binary sysctl support

Eric W. Biederman wrote:
> There has been a gradual transition from the assumption that the table ends with
> !ctl_name to the assumption that procname == NULL.  There is no sysctl entry
> with a valid ctl_name without a valid procname.

I see. Then, please add below one to your patchset.

Regards.
----------
[PATCH] sysctl security/tomoyo: Don't look at ctl_name

ctl_name field was removed. Always use procname field.

Signed-off-by: Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp>
---
 security/tomoyo/tomoyo.c |   10 +---------
 1 file changed, 1 insertion(+), 9 deletions(-)

--- security-testing-2.6.orig/security/tomoyo/tomoyo.c
+++ security-testing-2.6/security/tomoyo/tomoyo.c
@@ -122,15 +122,7 @@ static char *tomoyo_sysctl_path(struct c
 	*--end = '\0';
 	buflen--;
 	while (table) {
-		char num[32];
-		const char *sp = table->procname;
-
-		if (!sp) {
-			memset(num, 0, sizeof(num));
-			snprintf(num, sizeof(num) - 1, "=%d=", table->ctl_name);
-			sp = num;
-		}
-		if (tomoyo_prepend(&end, &buflen, sp) ||
+		if (tomoyo_prepend(&end, &buflen, table->procname) ||
 		    tomoyo_prepend(&end, &buflen, "/"))
 			goto out;
 		table = table->parent;
--
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