CRED: Pass credentials through dentry_open()

[linux-2.6-omap-h63xx.git] / fs / open.c

diff --git a/fs/open.c b/fs/open.c
index b1238e195e7e83e6fd3dd9c3080fe26c44ba022b..f96eaab280a35a973ef917753840a32d82a7e7ca 100644 (file)
--- a/fs/open.c
+++ b/fs/open.c
@@ -783,7 +783,8 @@ static inline int __get_file_write_access(struct inode *inode,
 
 static struct file *__dentry_open(struct dentry *dentry, struct vfsmount *mnt,
                                        int flags, struct file *f,
-                                       int (*open)(struct inode *, struct file *))
+                                       int (*open)(struct inode *, struct file *),
+                                       const struct cred *cred)
 {
        struct inode *inode;
        int error;
@@ -807,7 +808,7 @@ static struct file *__dentry_open(struct dentry *dentry, struct vfsmount *mnt,
        f->f_op = fops_get(inode->i_fop);
        file_move(f, &inode->i_sb->s_files);
 
-       error = security_dentry_open(f);
+       error = security_dentry_open(f, cred);
        if (error)
                goto cleanup_all;
 
@@ -882,6 +883,8 @@ cleanup_file:
 struct file *lookup_instantiate_filp(struct nameidata *nd, struct dentry *dentry,
                int (*open)(struct inode *, struct file *))
 {
+       const struct cred *cred = current_cred();
+
        if (IS_ERR(nd->intent.open.file))
                goto out;
        if (IS_ERR(dentry))
@@ -889,7 +892,7 @@ struct file *lookup_instantiate_filp(struct nameidata *nd, struct dentry *dentry
        nd->intent.open.file = __dentry_open(dget(dentry), mntget(nd->path.mnt),
                                             nd->intent.open.flags - 1,
                                             nd->intent.open.file,
-                                            open);
+                                            open, cred);
 out:
        return nd->intent.open.file;
 out_err:
@@ -908,6 +911,7 @@ EXPORT_SYMBOL_GPL(lookup_instantiate_filp);
  */
 struct file *nameidata_to_filp(struct nameidata *nd, int flags)
 {
+       const struct cred *cred = current_cred();
        struct file *filp;
 
        /* Pick up the filp from the open intent */
@@ -915,7 +919,7 @@ struct file *nameidata_to_filp(struct nameidata *nd, int flags)
        /* Has the filesystem initialised the file for us? */
        if (filp->f_path.dentry == NULL)
                filp = __dentry_open(nd->path.dentry, nd->path.mnt, flags, filp,
-                                    NULL);
+                                    NULL, cred);
        else
                path_put(&nd->path);
        return filp;
@@ -925,7 +929,8 @@ struct file *nameidata_to_filp(struct nameidata *nd, int flags)
  * dentry_open() will have done dput(dentry) and mntput(mnt) if it returns an
  * error.
  */
-struct file *dentry_open(struct dentry *dentry, struct vfsmount *mnt, int flags)
+struct file *dentry_open(struct dentry *dentry, struct vfsmount *mnt, int flags,
+                        const struct cred *cred)
 {
        int error;
        struct file *f;
@@ -950,7 +955,7 @@ struct file *dentry_open(struct dentry *dentry, struct vfsmount *mnt, int flags)
                return ERR_PTR(error);
        }
 
-       return __dentry_open(dentry, mnt, flags, f, NULL);
+       return __dentry_open(dentry, mnt, flags, f, NULL, cred);
 }
 EXPORT_SYMBOL(dentry_open);