commit 07b79c239d6adb95e495859307f2032014b810b4
Author: Erez Zadok <[EMAIL PROTECTED]>
Date: Mon Jul 28 03:33:49 2008 -0400
VFS: introduce vfs_path_lookup() from newer kernels
Signed-off-by: Erez Zadok <[EMAIL PROTECTED]>
diff --git a/fs/namei.c b/fs/namei.c
index 0a7647e..53fd065 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -960,6 +960,39 @@ int fastcall path_lookup(const char *name, unsigned int
flags, struct nameidata
return retval;
}
+/**
+ * vfs_path_lookup - lookup a file path relative to a dentry-vfsmount pair
+ * @dentry: pointer to dentry of the base directory
+ * @mnt: pointer to vfs mount of the base directory
+ * @name: pointer to file name
+ * @flags: lookup flags
+ * @nd: pointer to nameidata
+ */
+int vfs_path_lookup(struct dentry *dentry, struct vfsmount *mnt,
+ const char *name, unsigned int flags,
+ struct nameidata *nd)
+{
+ int retval;
+
+ /* same as do_path_lookup */
+ nd->last_type = LAST_ROOT;
+ nd->flags = flags;
+ nd->depth = 0;
+
+ nd->mnt = mntget(mnt);
+ nd->dentry = dget(dentry);
+
+ retval = path_walk(name, nd);
+ if (unlikely(!retval && current->audit_context && nd->dentry &&
+ nd->dentry->d_inode))
+ audit_inode(name,
+ nd->dentry->d_inode->i_ino,
+ nd->dentry->d_inode->i_rdev);
+
+ return retval;
+
+}
+
/*
* Restricted form of lookup. Doesn't follow links, single-component only,
* needs parent already locked. Doesn't follow mounts.
@@ -2395,6 +2428,7 @@ EXPORT_SYMBOL(page_readlink);
EXPORT_SYMBOL(page_symlink);
EXPORT_SYMBOL(page_symlink_inode_operations);
EXPORT_SYMBOL(path_lookup);
+EXPORT_SYMBOL(vfs_path_lookup);
EXPORT_SYMBOL(path_release);
EXPORT_SYMBOL(path_walk);
EXPORT_SYMBOL(permission);
diff --git a/include/linux/namei.h b/include/linux/namei.h
index 1bbfa29..dcb7f41 100644
--- a/include/linux/namei.h
+++ b/include/linux/namei.h
@@ -60,6 +60,8 @@ extern int FASTCALL(__user_walk(const char __user *,
unsigned, struct nameidata
extern int FASTCALL(path_lookup(const char *, unsigned, struct nameidata *));
extern int FASTCALL(path_walk(const char *, struct nameidata *));
extern int FASTCALL(link_path_walk(const char *, struct nameidata *));
+extern int vfs_path_lookup(struct dentry *, struct vfsmount *,
+ const char *, unsigned int, struct nameidata *);
extern void path_release(struct nameidata *);
extern void path_release_on_umount(struct nameidata *);
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