---

yaml
---
r: 71936
b: refs/heads/master
c: 74c3cbe
h: refs/heads/master
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 455434d450a358ac5bcf3fc58f8913d13c544622
+refs/heads/master: 74c3cbe33bc077ac1159cadfea608b501e100344

trunk/fs/dcache.c

@@ -38,7 +38,7 @@ int sysctl_vfs_cache_pressure __read_mostly = 100;
 EXPORT_SYMBOL_GPL(sysctl_vfs_cache_pressure);
 
  __cacheline_aligned_in_smp DEFINE_SPINLOCK(dcache_lock);
-static __cacheline_aligned_in_smp DEFINE_SEQLOCK(rename_lock);
+__cacheline_aligned_in_smp DEFINE_SEQLOCK(rename_lock);
 
 EXPORT_SYMBOL(dcache_lock);
 

trunk/include/linux/audit.h

@@ -63,6 +63,8 @@
 #define AUDIT_ADD_RULE		1011	/* Add syscall filtering rule */
 #define AUDIT_DEL_RULE		1012	/* Delete syscall filtering rule */
 #define AUDIT_LIST_RULES	1013	/* List syscall filtering rules */
+#define AUDIT_TRIM		1014	/* Trim junk from watched tree */
+#define AUDIT_MAKE_EQUIV	1015	/* Append to watched tree */
 #define AUDIT_TTY_GET		1016	/* Get TTY auditing status */
 #define AUDIT_TTY_SET		1017	/* Set TTY auditing status */
 
@@ -203,6 +205,7 @@
 #define AUDIT_SUCCESS   104	/* exit >= 0; value ignored */
 #define AUDIT_WATCH	105
 #define AUDIT_PERM	106
+#define AUDIT_DIR	107
 
 #define AUDIT_ARG0      200
 #define AUDIT_ARG1      (AUDIT_ARG0+1)

trunk/include/linux/dcache.h

@@ -178,6 +178,7 @@ d_iput:		no		no		no       yes
 #define DCACHE_INOTIFY_PARENT_WATCHED	0x0020 /* Parent inode is watched */
 
 extern spinlock_t dcache_lock;
+extern seqlock_t rename_lock;
 
 /**
  * d_drop - drop a dentry

trunk/init/Kconfig

@@ -234,6 +234,10 @@ config AUDITSYSCALL
 	  such as SELinux.  To use audit's filesystem watch feature, please
 	  ensure that INOTIFY is configured.
 
+config AUDIT_TREE
+	def_bool y
+	depends on AUDITSYSCALL && INOTIFY
+
 config IKCONFIG
 	tristate "Kernel .config support"
 	---help---

trunk/kernel/Makefile

@@ -46,6 +46,7 @@ obj-$(CONFIG_IKCONFIG) += configs.o
 obj-$(CONFIG_STOP_MACHINE) += stop_machine.o
 obj-$(CONFIG_AUDIT) += audit.o auditfilter.o
 obj-$(CONFIG_AUDITSYSCALL) += auditsc.o
+obj-$(CONFIG_AUDIT_TREE) += audit_tree.o
 obj-$(CONFIG_KPROBES) += kprobes.o
 obj-$(CONFIG_SYSFS) += ksysfs.o
 obj-$(CONFIG_DETECT_SOFTLOCKUP) += softlockup.o

trunk/kernel/audit.c

@@ -468,6 +468,21 @@ int audit_send_list(void *_dest)
 	return 0;
 }
 
+#ifdef CONFIG_AUDIT_TREE
+static int prune_tree_thread(void *unused)
+{
+	mutex_lock(&audit_cmd_mutex);
+	audit_prune_trees();
+	mutex_unlock(&audit_cmd_mutex);
+	return 0;
+}
+
+void audit_schedule_prune(void)
+{
+	kthread_run(prune_tree_thread, NULL, "audit_prune_tree");
+}
+#endif
+
 struct sk_buff *audit_make_reply(int pid, int seq, int type, int done,
 				 int multi, void *payload, int size)
 {
@@ -540,6 +555,8 @@ static int audit_netlink_ok(struct sk_buff *skb, u16 msg_type)
 	case AUDIT_SIGNAL_INFO:
 	case AUDIT_TTY_GET:
 	case AUDIT_TTY_SET:
+	case AUDIT_TRIM:
+	case AUDIT_MAKE_EQUIV:
 		if (security_netlink_recv(skb, CAP_AUDIT_CONTROL))
 			err = -EPERM;
 		break;
@@ -756,6 +773,76 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
 					   uid, seq, data, nlmsg_len(nlh),
 					   loginuid, sid);
 		break;
+	case AUDIT_TRIM:
+		audit_trim_trees();
+		ab = audit_log_start(NULL, GFP_KERNEL, AUDIT_CONFIG_CHANGE);
+		if (!ab)
+			break;
+		audit_log_format(ab, "auid=%u", loginuid);
+		if (sid) {
+			u32 len;
+			ctx = NULL;
+			if (selinux_sid_to_string(sid, &ctx, &len))
+				audit_log_format(ab, " ssid=%u", sid);
+			else
+				audit_log_format(ab, " subj=%s", ctx);
+			kfree(ctx);
+		}
+		audit_log_format(ab, " op=trim res=1");
+		audit_log_end(ab);
+		break;
+	case AUDIT_MAKE_EQUIV: {
+		void *bufp = data;
+		u32 sizes[2];
+		size_t len = nlmsg_len(nlh);
+		char *old, *new;
+
+		err = -EINVAL;
+		if (len < 2 * sizeof(u32))
+			break;
+		memcpy(sizes, bufp, 2 * sizeof(u32));
+		bufp += 2 * sizeof(u32);
+		len -= 2 * sizeof(u32);
+		old = audit_unpack_string(&bufp, &len, sizes[0]);
+		if (IS_ERR(old)) {
+			err = PTR_ERR(old);
+			break;
+		}
+		new = audit_unpack_string(&bufp, &len, sizes[1]);
+		if (IS_ERR(new)) {
+			err = PTR_ERR(new);
+			kfree(old);
+			break;
+		}
+		/* OK, here comes... */
+		err = audit_tag_tree(old, new);
+
+		ab = audit_log_start(NULL, GFP_KERNEL, AUDIT_CONFIG_CHANGE);
+		if (!ab) {
+			kfree(old);
+			kfree(new);
+			break;
+		}
+		audit_log_format(ab, "auid=%u", loginuid);
+		if (sid) {
+			u32 len;
+			ctx = NULL;
+			if (selinux_sid_to_string(sid, &ctx, &len))
+				audit_log_format(ab, " ssid=%u", sid);
+			else
+				audit_log_format(ab, " subj=%s", ctx);
+			kfree(ctx);
+		}
+		audit_log_format(ab, " op=make_equiv old=");
+		audit_log_untrustedstring(ab, old);
+		audit_log_format(ab, " new=");
+		audit_log_untrustedstring(ab, new);
+		audit_log_format(ab, " res=%d", !err);
+		audit_log_end(ab);
+		kfree(old);
+		kfree(new);
+		break;
+	}
 	case AUDIT_SIGNAL_INFO:
 		err = selinux_sid_to_string(audit_sig_sid, &ctx, &len);
 		if (err)

trunk/kernel/audit.h

@@ -73,6 +73,9 @@ struct audit_field {
 	struct selinux_audit_rule	*se_rule;
 };
 
+struct audit_tree;
+struct audit_chunk;
+
 struct audit_krule {
 	int			vers_ops;
 	u32			flags;
@@ -86,7 +89,8 @@ struct audit_krule {
 	struct audit_field	*arch_f; /* quick access to arch field */
 	struct audit_field	*inode_f; /* quick access to an inode field */
 	struct audit_watch	*watch;	/* associated watch */
-	struct list_head	rlist;	/* entry in audit_watch.rules list */
+	struct audit_tree	*tree;	/* associated watched tree */
+	struct list_head	rlist;	/* entry in audit_{watch,tree}.rules list */
 };
 
 struct audit_entry {
@@ -130,6 +134,34 @@ extern void audit_handle_ievent(struct inotify_watch *, u32, u32, u32,
 				const char *, struct inode *);
 extern int selinux_audit_rule_update(void);
 
+extern struct mutex audit_filter_mutex;
+extern void audit_free_rule_rcu(struct rcu_head *);
+
+#ifdef CONFIG_AUDIT_TREE
+extern struct audit_chunk *audit_tree_lookup(const struct inode *);
+extern void audit_put_chunk(struct audit_chunk *);
+extern int audit_tree_match(struct audit_chunk *, struct audit_tree *);
+extern int audit_make_tree(struct audit_krule *, char *, u32);
+extern int audit_add_tree_rule(struct audit_krule *);
+extern int audit_remove_tree_rule(struct audit_krule *);
+extern void audit_trim_trees(void);
+extern int audit_tag_tree(char *old, char *new);
+extern void audit_schedule_prune(void);
+extern void audit_prune_trees(void);
+extern const char *audit_tree_path(struct audit_tree *);
+extern void audit_put_tree(struct audit_tree *);
+#else
+#define audit_remove_tree_rule(rule) BUG()
+#define audit_add_tree_rule(rule) -EINVAL
+#define audit_make_tree(rule, str, op) -EINVAL
+#define audit_trim_trees() (void)0
+#define audit_put_tree(tree) (void)0
+#define audit_tag_tree(old, new) -EINVAL
+#define audit_tree_path(rule) ""	/* never called */
+#endif
+
+extern char *audit_unpack_string(void **, size_t *, size_t);
+
 #ifdef CONFIG_AUDITSYSCALL
 extern int __audit_signal_info(int sig, struct task_struct *t);
 static inline int audit_signal_info(int sig, struct task_struct *t)