[PATCH] sysctl: remove the proc_dir_entry member for the sysctl tables

It isn't needed anymore, all of the users are gone, and all of the ctl_table
initializers have been converted to use explicit names of the fields they are
initializing.

[akpm@osdl.org: NTFS fix]
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Acked-by: Stephen Smalley <sds@tycho.nsa.gov>
Cc: James Morris <jmorris@namei.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 37 insertions, 2 deletions

diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
index 35eb8de892fc..118ddfb614ee 100644
--- a/security/selinux/hooks.c
+++ b/security/selinux/hooks.c
@@ -1423,6 +1423,41 @@ static int selinux_capable(struct task_struct *tsk, int cap)
 	return task_has_capability(tsk,cap);
 }
 
+static int selinux_sysctl_get_sid(ctl_table *table, u16 tclass, u32 *sid)
+{
+	int buflen, rc;
+	char *buffer, *path, *end;
+
+	rc = -ENOMEM;
+	buffer = (char*)__get_free_page(GFP_KERNEL);
+	if (!buffer)
+		goto out;
+
+	buflen = PAGE_SIZE;
+	end = buffer+buflen;
+	*--end = '\0';
+	buflen--;
+	path = end-1;
+	*path = '/';
+	while (table) {
+		const char *name = table->procname;
+		size_t namelen = strlen(name);
+		buflen -= namelen + 1;
+		if (buflen < 0)
+			goto out_free;
+		end -= namelen;
+		memcpy(end, name, namelen);
+		*--end = '/';
+		path = end;
+		table = table->parent;
+	}
+	rc = security_genfs_sid("proc", path, tclass, sid);
+out_free:
+	free_page((unsigned long)buffer);
+out:
+	return rc;
+}
+
 static int selinux_sysctl(ctl_table *table, int op)
 {
 	int error = 0;
@@ -1437,8 +1472,8 @@ static int selinux_sysctl(ctl_table *table, int op)
 
 	tsec = current->security;
 
-	rc = selinux_proc_get_sid(table->de, (op == 001) ?
-	                          SECCLASS_DIR : SECCLASS_FILE, &tsid);
+	rc = selinux_sysctl_get_sid(table, (op == 0001) ?
+				    SECCLASS_DIR : SECCLASS_FILE, &tsid);
 	if (rc) {
 		/* Default to the well-defined sysctl SID. */
 		tsid = SECINITSID_SYSCTL;