---

yaml --- r: 227783 b: refs/heads/master c: ce6ada3 h: refs/heads/master i: 227781: f56577a 227779: 67a31a6 227775: f64e3ae v: v3
git-mirror · Nov 28, 2010 · 69ff118 · 69ff118
1 parent bea5dfb
commit 69ff118
Show file tree

Hide file tree

Showing 4 changed files with 14 additions and 5 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 1d6d75684d869406e5bb2ac5d3ed9454f52d0cab
+refs/heads/master: ce6ada35bdf710d16582cc4869c26722547e6f11
diff --git a/trunk/include/linux/capability.h b/trunk/include/linux/capability.h
@@ -246,7 +246,6 @@ struct cpu_vfs_cap_data {
 /* Allow configuration of the secure attention key */
 /* Allow administration of the random device */
 /* Allow examination and configuration of disk quotas */
-/* Allow configuring the kernel's syslog (printk behaviour) */
 /* Allow setting the domainname */
 /* Allow setting the hostname */
 /* Allow calling bdflush() */
@@ -352,7 +351,11 @@ struct cpu_vfs_cap_data {
 
 #define CAP_MAC_ADMIN        33
 
-#define CAP_LAST_CAP         CAP_MAC_ADMIN
+/* Allow configuring the kernel's syslog (printk behaviour) */
+
+#define CAP_SYSLOG           34
+
+#define CAP_LAST_CAP         CAP_SYSLOG
 
 #define cap_valid(x) ((x) >= 0 && (x) <= CAP_LAST_CAP)
 

diff --git a/trunk/kernel/printk.c b/trunk/kernel/printk.c
@@ -283,8 +283,14 @@ int do_syslog(int type, char __user *buf, int len, bool from_file)
 			return -EPERM;
 		if ((type != SYSLOG_ACTION_READ_ALL &&
 		     type != SYSLOG_ACTION_SIZE_BUFFER) &&
-		    !capable(CAP_SYS_ADMIN))
+		    !capable(CAP_SYSLOG)) {
+			/* remove after 2.6.38 */
+			if (capable(CAP_SYS_ADMIN))
+				WARN_ONCE(1, "Attempt to access syslog with "
+				  "CAP_SYS_ADMIN but no CAP_SYSLOG "
+				  "(deprecated and denied).\n");
 			return -EPERM;
+		}
 	}
 
 	error = security_syslog(type);

diff --git a/trunk/security/selinux/include/classmap.h b/trunk/security/selinux/include/classmap.h
@@ -142,7 +142,7 @@ struct security_class_mapping secclass_map[] = {
 	    "node_bind", "name_connect", NULL } },
 	{ "memprotect", { "mmap_zero", NULL } },
 	{ "peer", { "recv", NULL } },
-	{ "capability2", { "mac_override", "mac_admin", NULL } },
+	{ "capability2", { "mac_override", "mac_admin", "syslog", NULL } },
 	{ "kernel_service", { "use_as_override", "create_files_as", NULL } },
 	{ "tun_socket",
 	  { COMMON_SOCK_PERMS, NULL } },