make nameidata completely opaque outside of fs/namei.c (1f55a6ec) · Commits · e / devices / android_kernel_sony_msm8998

fs/namei.c

+24 −0

Original line number	Diff line number	Diff line
		@@ -487,6 +487,18 @@ void path_put(const struct path *path)
		}
		EXPORT_SYMBOL(path_put);

		struct nameidata {
		struct path path;
		struct qstr last;
		struct path root;
		struct inode inode; / path.dentry.d_inode */
		unsigned int flags;
		unsigned seq, m_seq;
		int last_type;
		unsigned depth;
		char *saved_names[MAX_NESTED_LINKS + 1];
		};

		/*
		* Path walking has 2 modes, rcu-walk and ref-walk (see
		* Documentation/filesystems/path-lookup.txt). In situations when we can't
		@@ -695,6 +707,18 @@ void nd_jump_link(struct nameidata nd, struct path path)
		nd->flags \|= LOOKUP_JUMPED;
		}

		void nd_set_link(struct nameidata nd, char path)
		{
		nd->saved_names[nd->depth] = path;
		}
		EXPORT_SYMBOL(nd_set_link);

		char nd_get_link(struct nameidata nd)
		{
		return nd->saved_names[nd->depth];
		}
		EXPORT_SYMBOL(nd_get_link);

		static inline void put_link(struct nameidata nd, struct path link, void *cookie)
		{
		struct inode *inode = link->dentry->d_inode;

+3 −22

Original line number	Diff line number	Diff line
		@@ -7,21 +7,10 @@
		#include <linux/path.h>

		struct vfsmount;
		struct nameidata;

		enum { MAX_NESTED_LINKS = 8 };

		struct nameidata {
		struct path path;
		struct qstr last;
		struct path root;
		struct inode inode; / path.dentry.d_inode */
		unsigned int flags;
		unsigned seq, m_seq;
		int last_type;
		unsigned depth;
		char *saved_names[MAX_NESTED_LINKS + 1];
		};

		/*
		* Type of the last component on LOOKUP_PARENT
		*/
		@@ -82,16 +71,8 @@ extern struct dentry lock_rename(struct dentry , struct dentry *);
		extern void unlock_rename(struct dentry , struct dentry );

		extern void nd_jump_link(struct nameidata nd, struct path path);

		static inline void nd_set_link(struct nameidata nd, char path)
		{
		nd->saved_names[nd->depth] = path;
		}

		static inline char nd_get_link(struct nameidata nd)
		{
		return nd->saved_names[nd->depth];
		}
		extern void nd_set_link(struct nameidata nd, char path);
		extern char nd_get_link(struct nameidata nd);

		static inline void nd_terminate_link(void *name, size_t len, size_t maxlen)
		{