Updated AppArmor with a newer backported AppArmor release by UBports

security/apparmor/include/apparmor.h

@@ -4,7 +4,7 @@
  * This file contains AppArmor basic global and lib definitions
  *
  * Copyright (C) 1998-2008 Novell/SUSE
- * Copyright 2009-2010 Canonical Ltd.
+ * Copyright 2009-2013 Canonical Ltd.
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
@@ -15,10 +15,22 @@
 #ifndef __APPARMOR_H
 #define __APPARMOR_H
 
+#include <linux/slab.h>
 #include <linux/fs.h>
 
 #include "match.h"
 
+/* Provide our own test for whether a write lock is held for asserts
+ * this is because on none SMP systems write_can_lock will always
+ * resolve to true, which is what you want for code making decisions
+ * based on it, but wrong for asserts checking that the lock is held
+ */
+#ifdef CONFIG_SMP
+#define write_is_locked(X) !write_can_lock(X)
+#else
+#define write_is_locked(X) (1)
+#endif /* CONFIG_SMP */
+
 /*
  * Class of mediation types in the AppArmor policy db
  */
@@ -29,17 +41,23 @@
 #define AA_CLASS_NET		4
 #define AA_CLASS_RLIMITS	5
 #define AA_CLASS_DOMAIN		6
+#define AA_CLASS_MOUNT		7
+#define AA_CLASS_PTRACE		9
+#define AA_CLASS_SIGNAL		10
+#define AA_CLASS_LABEL		16
 
-#define AA_CLASS_LAST		AA_CLASS_DOMAIN
+#define AA_CLASS_LAST		AA_CLASS_LABEL
 
 /* Control parameters settable through module/boot flags */
 extern enum audit_mode aa_g_audit;
 extern bool aa_g_audit_header;
 extern bool aa_g_debug;
+extern bool aa_g_hash_policy;
 extern bool aa_g_lock_policy;
 extern bool aa_g_logsyscall;
 extern bool aa_g_paranoid_load;
 extern unsigned int aa_g_path_max;
+extern bool aa_g_unconfined_init;
 
 /*
  * DEBUG remains global (no per profile flag) since it is mostly used in sysctl
@@ -52,6 +70,12 @@ extern unsigned int aa_g_path_max;
 			printk(KERN_DEBUG "AppArmor: " fmt, ##args);	\
 	} while (0)
 
+#define AA_WARN(X) WARN((X), "APPARMOR WARN %s: %s\n", __FUNCTION__, #X)
+
+#define AA_BUG(X, args...) AA_BUG_FMT((X), "" args )
+#define AA_BUG_FMT(X, fmt, args...)					\
+	WARN((X), "AppArmor WARN %s: (" #X "): " fmt, __FUNCTION__ , ##args )
+
 #define AA_ERROR(fmt, args...)						\
 	do {								\
 		if (printk_ratelimit())					\
@@ -63,10 +87,25 @@ extern int apparmor_initialized __initdata;
 
 /* fn's in lib */
 char *aa_split_fqname(char *args, char **ns_name);
+char *aa_splitn_fqname(char *fqname, size_t n, char **ns_name, size_t *ns_len);
 void aa_info_message(const char *str);
-void *kvmalloc(size_t size);
-void kvfree(void *buffer);
+void *__aa_kvmalloc(size_t size, gfp_t flags);
 
+static inline void *kvmalloc(size_t size)
+{
+	return __aa_kvmalloc(size, 0);
+}
+
+static inline void *kvzalloc(size_t size)
+{
+	return __aa_kvmalloc(size, __GFP_ZERO);
+}
+
+/* returns 0 if kref not incremented */
+static inline int kref_get_not0(struct kref *kref)
+{
+	return atomic_inc_not_zero(&kref->refcount);
+}
 
 /**
  * aa_strneq - compare null terminated @str to a non null terminated substring
@@ -97,9 +136,40 @@ static inline unsigned int aa_dfa_null_transition(struct aa_dfa *dfa,
 	return aa_dfa_next(dfa, start, 0);
 }
 
-static inline bool mediated_filesystem(struct inode *inode)
+static inline bool path_mediated_fs(struct dentry *dentry)
 {
-	return !(inode->i_sb->s_flags & MS_NOUSER);
+	return !(dentry->d_sb->s_flags & MS_NOUSER);
 }
 
+
+struct counted_str {
+	struct kref count;
+	char name[];
+};
+
+#define str_to_counted(str) \
+	((struct counted_str *)(str - offsetof(struct counted_str,name)))
+
+#define __counted	/* atm just a notation */
+
+void aa_str_kref(struct kref *kref);
+char *aa_str_alloc(int size, gfp_t gfp);
+
+
+static inline __counted char *aa_get_str(__counted char *str)
+{
+	if (str)
+		kref_get(&(str_to_counted(str)->count));
+
+	return str;
+}
+
+static inline void aa_put_str(__counted char *str)
+{
+	if (str)
+		kref_put(&str_to_counted(str)->count, aa_str_kref);
+}
+
+const char *aa_imode_name(umode_t mode);
+
 #endif /* __APPARMOR_H */