[PATCH] pass dentry to audit_inode()/audit_inode_child()

makes caller simpler *and* allows to scan ancestors

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

fs/debugfs/inode.c

@@ -413,7 +413,7 @@ struct dentry *debugfs_rename(struct dentry *old_dir, struct dentry *old_dentry,
 	d_move(old_dentry, dentry);
 	fsnotify_move(old_dir->d_inode, new_dir->d_inode, old_name,
 		old_dentry->d_name.name, S_ISDIR(old_dentry->d_inode->i_mode),
-		NULL, old_dentry->d_inode);
+		NULL, old_dentry);
 	fsnotify_oldname_free(old_name);
 	unlock_rename(new_dir, old_dir);
 	dput(dentry);

fs/namei.c

@@ -1174,7 +1174,7 @@ static int fastcall do_path_lookup(int dfd, const char *name,
 out:
 	if (unlikely(!retval && !audit_dummy_context() && nd->dentry &&
 				nd->dentry->d_inode))
-		audit_inode(name, nd->dentry->d_inode);
+		audit_inode(name, nd->dentry);
 out_fail:
 	return retval;
 
@@ -1214,7 +1214,7 @@ int vfs_path_lookup(struct dentry *dentry, struct vfsmount *mnt,
 	retval = path_walk(name, nd);
 	if (unlikely(!retval && !audit_dummy_context() && nd->dentry &&
 				nd->dentry->d_inode))
-		audit_inode(name, nd->dentry->d_inode);
+		audit_inode(name, nd->dentry);
 
 	return retval;
 
@@ -1469,7 +1469,7 @@ static int may_delete(struct inode *dir,struct dentry *victim,int isdir)
 		return -ENOENT;
 
 	BUG_ON(victim->d_parent->d_inode != dir);
-	audit_inode_child(victim->d_name.name, victim->d_inode, dir);
+	audit_inode_child(victim->d_name.name, victim, dir);
 
 	error = permission(dir,MAY_WRITE | MAY_EXEC, NULL);
 	if (error)
@@ -1783,7 +1783,7 @@ int open_namei(int dfd, const char *pathname, int flag,
 	 * It already exists.
 	 */
 	mutex_unlock(&dir->d_inode->i_mutex);
-	audit_inode(pathname, path.dentry->d_inode);
+	audit_inode(pathname, path.dentry);
 
 	error = -EEXIST;
 	if (flag & O_EXCL)
@@ -2562,7 +2562,7 @@ int vfs_rename(struct inode *old_dir, struct dentry *old_dentry,
 	if (!error) {
 		const char *new_name = old_dentry->d_name.name;
 		fsnotify_move(old_dir, new_dir, old_name, new_name, is_dir,
-			      new_dentry->d_inode, old_dentry->d_inode);
+			      new_dentry->d_inode, old_dentry);
 	}
 	fsnotify_oldname_free(old_name);
 

fs/open.c

@@ -569,7 +569,7 @@ asmlinkage long sys_fchmod(unsigned int fd, mode_t mode)
 	dentry = file->f_path.dentry;
 	inode = dentry->d_inode;
 
-	audit_inode(NULL, inode);
+	audit_inode(NULL, dentry);
 
 	err = -EROFS;
 	if (IS_RDONLY(inode))
@@ -727,7 +727,7 @@ asmlinkage long sys_fchown(unsigned int fd, uid_t user, gid_t group)
 		goto out;
 
 	dentry = file->f_path.dentry;
-	audit_inode(NULL, dentry->d_inode);
+	audit_inode(NULL, dentry);
 	error = chown_common(dentry, user, group);
 	fput(file);
 out:

fs/xattr.c

@@ -267,7 +267,7 @@ sys_fsetxattr(int fd, char __user *name, void __user *value,
 	if (!f)
 		return error;
 	dentry = f->f_path.dentry;
-	audit_inode(NULL, dentry->d_inode);
+	audit_inode(NULL, dentry);
 	error = setxattr(dentry, name, value, size, flags);
 	fput(f);
 	return error;
@@ -349,7 +349,7 @@ sys_fgetxattr(int fd, char __user *name, void __user *value, size_t size)
 	f = fget(fd);
 	if (!f)
 		return error;
-	audit_inode(NULL, f->f_path.dentry->d_inode);
+	audit_inode(NULL, f->f_path.dentry);
 	error = getxattr(f->f_path.dentry, name, value, size);
 	fput(f);
 	return error;
@@ -422,7 +422,7 @@ sys_flistxattr(int fd, char __user *list, size_t size)
 	f = fget(fd);
 	if (!f)
 		return error;
-	audit_inode(NULL, f->f_path.dentry->d_inode);
+	audit_inode(NULL, f->f_path.dentry);
 	error = listxattr(f->f_path.dentry, list, size);
 	fput(f);
 	return error;
@@ -485,7 +485,7 @@ sys_fremovexattr(int fd, char __user *name)
 	if (!f)
 		return error;
 	dentry = f->f_path.dentry;
-	audit_inode(NULL, dentry->d_inode);
+	audit_inode(NULL, dentry);
 	error = removexattr(dentry, name);
 	fput(f);
 	return error;

include/linux/audit.h

@@ -366,8 +366,8 @@ extern void audit_syscall_entry(int arch,
 extern void audit_syscall_exit(int failed, long return_code);
 extern void __audit_getname(const char *name);
 extern void audit_putname(const char *name);
-extern void __audit_inode(const char *name, const struct inode *inode);
-extern void __audit_inode_child(const char *dname, const struct inode *inode,
+extern void __audit_inode(const char *name, const struct dentry *dentry);
+extern void __audit_inode_child(const char *dname, const struct dentry *dentry,
 				const struct inode *parent);
 extern void __audit_ptrace(struct task_struct *t);
 
@@ -381,15 +381,15 @@ static inline void audit_getname(const char *name)
 	if (unlikely(!audit_dummy_context()))
 		__audit_getname(name);
 }
-static inline void audit_inode(const char *name, const struct inode *inode) {
+static inline void audit_inode(const char *name, const struct dentry *dentry) {
 	if (unlikely(!audit_dummy_context()))
-		__audit_inode(name, inode);
+		__audit_inode(name, dentry);
 }
 static inline void audit_inode_child(const char *dname, 
-				     const struct inode *inode,
+				     const struct dentry *dentry,
 				     const struct inode *parent) {
 	if (unlikely(!audit_dummy_context()))
-		__audit_inode_child(dname, inode, parent);
+		__audit_inode_child(dname, dentry, parent);
 }
 void audit_core_dumps(long signr);
 
@@ -477,9 +477,9 @@ extern int audit_signals;
 #define audit_dummy_context() 1
 #define audit_getname(n) do { ; } while (0)
 #define audit_putname(n) do { ; } while (0)
-#define __audit_inode(n,i) do { ; } while (0)
+#define __audit_inode(n,d) do { ; } while (0)
 #define __audit_inode_child(d,i,p) do { ; } while (0)
-#define audit_inode(n,i) do { ; } while (0)
+#define audit_inode(n,d) do { ; } while (0)
 #define audit_inode_child(d,i,p) do { ; } while (0)
 #define audit_core_dumps(i) do { ; } while (0)
 #define auditsc_get_stamp(c,t,s) do { BUG(); } while (0)

include/linux/fsnotify.h

@@ -41,8 +41,9 @@ static inline void fsnotify_d_move(struct dentry *entry)
  */
 static inline void fsnotify_move(struct inode *old_dir, struct inode *new_dir,
 				 const char *old_name, const char *new_name,
-				 int isdir, struct inode *target, struct inode *source)
+				 int isdir, struct inode *target, struct dentry *moved)
 {
+	struct inode *source = moved->d_inode;
 	u32 cookie = inotify_get_cookie();
 
 	if (old_dir == new_dir)
@@ -67,7 +68,7 @@ static inline void fsnotify_move(struct inode *old_dir, struct inode *new_dir,
 	if (source) {
 		inotify_inode_queue_event(source, IN_MOVE_SELF, 0, NULL, NULL);
 	}
-	audit_inode_child(new_name, source, new_dir);
+	audit_inode_child(new_name, moved, new_dir);
 }
 
 /*
@@ -98,7 +99,7 @@ static inline void fsnotify_create(struct inode *inode, struct dentry *dentry)
 	inode_dir_notify(inode, DN_CREATE);
 	inotify_inode_queue_event(inode, IN_CREATE, 0, dentry->d_name.name,
 				  dentry->d_inode);
-	audit_inode_child(dentry->d_name.name, dentry->d_inode, inode);
+	audit_inode_child(dentry->d_name.name, dentry, inode);
 }
 
 /*
@@ -109,7 +110,7 @@ static inline void fsnotify_mkdir(struct inode *inode, struct dentry *dentry)
 	inode_dir_notify(inode, DN_CREATE);
 	inotify_inode_queue_event(inode, IN_CREATE | IN_ISDIR, 0, 
 				  dentry->d_name.name, dentry->d_inode);
-	audit_inode_child(dentry->d_name.name, dentry->d_inode, inode);
+	audit_inode_child(dentry->d_name.name, dentry, inode);
 }
 
 /*

ipc/mqueue.c

@@ -676,7 +676,7 @@ asmlinkage long sys_mq_open(const char __user *u_name, int oflag, mode_t mode,
 
 	if (oflag & O_CREAT) {
 		if (dentry->d_inode) {	/* entry already exists */
-			audit_inode(name, dentry->d_inode);
+			audit_inode(name, dentry);
 			error = -EEXIST;
 			if (oflag & O_EXCL)
 				goto out;
@@ -689,7 +689,7 @@ asmlinkage long sys_mq_open(const char __user *u_name, int oflag, mode_t mode,
 		error = -ENOENT;
 		if (!dentry->d_inode)
 			goto out;
-		audit_inode(name, dentry->d_inode);
+		audit_inode(name, dentry);
 		filp = do_open(dentry, oflag);
 	}
 
@@ -837,7 +837,7 @@ asmlinkage long sys_mq_timedsend(mqd_t mqdes, const char __user *u_msg_ptr,
 	if (unlikely(filp->f_op != &mqueue_file_operations))
 		goto out_fput;
 	info = MQUEUE_I(inode);
-	audit_inode(NULL, inode);
+	audit_inode(NULL, filp->f_path.dentry);
 
 	if (unlikely(!(filp->f_mode & FMODE_WRITE)))
 		goto out_fput;
@@ -921,7 +921,7 @@ asmlinkage ssize_t sys_mq_timedreceive(mqd_t mqdes, char __user *u_msg_ptr,
 	if (unlikely(filp->f_op != &mqueue_file_operations))
 		goto out_fput;
 	info = MQUEUE_I(inode);
-	audit_inode(NULL, inode);
+	audit_inode(NULL, filp->f_path.dentry);
 
 	if (unlikely(!(filp->f_mode & FMODE_READ)))
 		goto out_fput;

kernel/auditsc.c

@@ -1403,10 +1403,11 @@ static void audit_copy_inode(struct audit_names *name, const struct inode *inode
  *
  * Called from fs/namei.c:path_lookup().
  */
-void __audit_inode(const char *name, const struct inode *inode)
+void __audit_inode(const char *name, const struct dentry *dentry)
 {
 	int idx;
 	struct audit_context *context = current->audit_context;
+	const struct inode *inode = inode = dentry->d_inode;
 
 	if (!context->in_syscall)
 		return;
@@ -1443,12 +1444,13 @@ void __audit_inode(const char *name, const struct inode *inode)
  * must be hooked prior, in order to capture the target inode during
  * unsuccessful attempts.
  */
-void __audit_inode_child(const char *dname, const struct inode *inode,
+void __audit_inode_child(const char *dname, const struct dentry *dentry,
 			 const struct inode *parent)
 {
 	int idx;
 	struct audit_context *context = current->audit_context;
 	const char *found_parent = NULL, *found_child = NULL;
+	const struct inode *inode = dentry->d_inode;
 	int dirlen = 0;
 
 	if (!context->in_syscall)