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Commit d1811465 authored by Al Viro's avatar Al Viro
Browse files

[PATCH] new helper - kern_path() 



Analog of lookup_path(), takes struct path *.

Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
parent 2515ddc6

fs/namei.c

+10 −0
Original line number Original line Diff line number Diff line
@@ -1106,6 +1106,15 @@ int path_lookup(const char *name, unsigned int flags, 
	return do_path_lookup(AT_FDCWD, name, flags, nd);

	return do_path_lookup(AT_FDCWD, name, flags, nd);

}

}





int kern_path(const char *name, unsigned int flags, struct path *path)

{

	struct nameidata nd;

	int res = do_path_lookup(AT_FDCWD, name, flags, &nd);

	if (!res)

		*path = nd.path;

	return res;

}



/**

/**

 * vfs_path_lookup - lookup a file path relative to a dentry-vfsmount pair

 * vfs_path_lookup - lookup a file path relative to a dentry-vfsmount pair

 * @dentry:  pointer to dentry of the base directory

 * @dentry:  pointer to dentry of the base directory
@@ -2855,6 +2864,7 @@ EXPORT_SYMBOL(__page_symlink); 
EXPORT_SYMBOL(page_symlink);

EXPORT_SYMBOL(page_symlink);

EXPORT_SYMBOL(page_symlink_inode_operations);

EXPORT_SYMBOL(page_symlink_inode_operations);

EXPORT_SYMBOL(path_lookup);

EXPORT_SYMBOL(path_lookup);

EXPORT_SYMBOL(kern_path);

EXPORT_SYMBOL(vfs_path_lookup);

EXPORT_SYMBOL(vfs_path_lookup);

EXPORT_SYMBOL(inode_permission);

EXPORT_SYMBOL(inode_permission);

EXPORT_SYMBOL(vfs_permission);

EXPORT_SYMBOL(vfs_permission);

include/linux/namei.h

+2 −0
Original line number Original line Diff line number Diff line
@@ -61,6 +61,8 @@ extern int user_path_at(int, const char __user *, unsigned, struct path *); 
#define user_path_dir(name, path) \

#define user_path_dir(name, path) \

	user_path_at(AT_FDCWD, name, LOOKUP_FOLLOW | LOOKUP_DIRECTORY, path)

	user_path_at(AT_FDCWD, name, LOOKUP_FOLLOW | LOOKUP_DIRECTORY, path)





extern int kern_path(const char *, unsigned, struct path *);



extern int path_lookup(const char *, unsigned, struct nameidata *);

extern int path_lookup(const char *, unsigned, struct nameidata *);

extern int vfs_path_lookup(struct dentry *, struct vfsmount *,

extern int vfs_path_lookup(struct dentry *, struct vfsmount *,

			   const char *, unsigned int, struct nameidata *);

			   const char *, unsigned int, struct nameidata *);