.kill_sb = kill_litter_super,
};
+int securityfs_pin_fs(void)
+{
+ return simple_pin_fs(&fs_type, &mount, &mount_count);
+}
+
+int __securityfs_setup_d_inode(struct inode *dir, struct dentry *dentry,
+ umode_t mode, void *data,
+ const struct file_operations *fops,
+ const struct inode_operations *iops)
+{
+ bool is_dir = S_ISDIR(mode);
+ struct inode *inode = new_inode(dir->i_sb);
+ if (!inode)
+ return -ENOMEM;
+
+ inode->i_ino = get_next_ino();
+ inode->i_mode = mode;
+ inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME;
+ inode->i_private = data;
+ if (is_dir) {
+ inode->i_op = iops ? iops : &simple_dir_inode_operations;
+ inode->i_fop = &simple_dir_operations;
+ inc_nlink(inode);
+ inc_nlink(dir);
+ } else {
+ inode->i_fop = fops;
+ }
+ d_instantiate(dentry, inode);
+ dget(dentry);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(__securityfs_setup_d_inode);
+
/**
- * securityfs_create_file - create a file in the securityfs filesystem
+ * securityfs_create_dentry - create a file/dir in the securityfs filesystem
*
* @name: a pointer to a string containing the name of the file to create.
* @mode: the permission that the file should have
* the open() call.
* @fops: a pointer to a struct file_operations that should be used for
* this file.
+ * @iops: a point to a struct of inode_operations that should be used for
+ * this file/dir
*
- * This is the basic "create a file" function for securityfs. It allows for a
+ * This is the basic "create a xxx" function for securityfs. It allows for a
* wide range of flexibility in creating a file, or a directory (if you
* want to create a directory, the securityfs_create_dir() function is
* recommended to be used instead).
* If securityfs is not enabled in the kernel, the value %-ENODEV is
* returned.
*/
-struct dentry *securityfs_create_file(const char *name, umode_t mode,
- struct dentry *parent, void *data,
- const struct file_operations *fops)
+struct dentry *securityfs_create_dentry(const char *name, umode_t mode,
+ struct dentry *parent, void *data,
+ const struct file_operations *fops,
+ const struct inode_operations *iops)
{
struct dentry *dentry;
int is_dir = S_ISDIR(mode);
- struct inode *dir, *inode;
+ struct inode *dir;
int error;
if (!is_dir) {
goto out1;
}
- inode = new_inode(dir->i_sb);
- if (!inode) {
- error = -ENOMEM;
+ error = __securityfs_setup_d_inode(dir, dentry, mode, data, fops, iops);
+ if (error)
goto out1;
- }
-
- inode->i_ino = get_next_ino();
- inode->i_mode = mode;
- inode->i_atime = inode->i_mtime = inode->i_ctime = current_time(inode);
- inode->i_private = data;
- if (is_dir) {
- inode->i_op = &simple_dir_inode_operations;
- inode->i_fop = &simple_dir_operations;
- inc_nlink(inode);
- inc_nlink(dir);
- } else {
- inode->i_fop = fops;
- }
- d_instantiate(dentry, inode);
- dget(dentry);
inode_unlock(dir);
return dentry;
simple_release_fs(&mount, &mount_count);
return dentry;
}
+EXPORT_SYMBOL_GPL(securityfs_create_dentry);
+
+/**
+ * securityfs_create_file - create a file in the securityfs filesystem
+ *
+ * @name: a pointer to a string containing the name of the file to create.
+ * @mode: the permission that the file should have
+ * @parent: a pointer to the parent dentry for this file. This should be a
+ * directory dentry if set. If this parameter is %NULL, then the
+ * file will be created in the root of the securityfs filesystem.
+ * @data: a pointer to something that the caller will want to get to later
+ * on. The inode.i_private pointer will point to this value on
+ * the open() call.
+ * @fops: a pointer to a struct file_operations that should be used for
+ * this file.
+ *
+ * This function creates a file in securityfs with the given @name.
+ *
+ * This function returns a pointer to a dentry if it succeeds. This
+ * pointer must be passed to the securityfs_remove() function when the file is
+ * to be removed (no automatic cleanup happens if your module is unloaded,
+ * you are responsible here). If an error occurs, the function will return
+ * the error value (via ERR_PTR).
+ *
+ * If securityfs is not enabled in the kernel, the value %-ENODEV is
+ * returned.
+ */
+struct dentry *securityfs_create_file(const char *name, umode_t mode,
+ struct dentry *parent, void *data,
+ const struct file_operations *fops)
+{
+ return securityfs_create_dentry(name, mode, parent, data, fops, NULL);
+}
EXPORT_SYMBOL_GPL(securityfs_create_file);
/**