linux/fs/vboxsf/super.c

// SPDX-License-Identifier: MIT
/*
 * VirtualBox Guest Shared Folders support: Virtual File System.
 *
 * Module initialization/finalization
 * File system registration/deregistration
 * Superblock reading
 * Few utility functions
 *
 * Copyright (C) 2006-2018 Oracle Corporation
 */

#include <linux/idr.h>
#include <linux/fs_parser.h>
#include <linux/magic.h>
#include <linux/module.h>
#include <linux/nls.h>
#include <linux/statfs.h>
#include <linux/vbox_utils.h>
#include "vfsmod.h"

#define VBOXSF_SUPER_MAGIC …

static const unsigned char VBSF_MOUNT_SIGNATURE[4] = …;

static int follow_symlinks;
module_param(follow_symlinks, int, 0444);
MODULE_PARM_DESC(…) …;

static DEFINE_IDA(vboxsf_bdi_ida);
static DEFINE_MUTEX(vboxsf_setup_mutex);
static bool vboxsf_setup_done;
static struct super_operations vboxsf_super_ops; /* forward declaration */
static struct kmem_cache *vboxsf_inode_cachep;

static char * const vboxsf_default_nls = …;

enum  { … };

static const struct fs_parameter_spec vboxsf_fs_parameters[] = …;

static int vboxsf_parse_param(struct fs_context *fc, struct fs_parameter *param)
{ … }

static int vboxsf_fill_super(struct super_block *sb, struct fs_context *fc)
{ … }

static void vboxsf_inode_init_once(void *data)
{ … }

static struct inode *vboxsf_alloc_inode(struct super_block *sb)
{ … }

static void vboxsf_free_inode(struct inode *inode)
{ … }

static void vboxsf_put_super(struct super_block *sb)
{ … }

static int vboxsf_statfs(struct dentry *dentry, struct kstatfs *stat)
{ … }

static struct super_operations vboxsf_super_ops = …;

static int vboxsf_setup(void)
{ … }

static int vboxsf_parse_monolithic(struct fs_context *fc, void *data)
{ … }

static int vboxsf_get_tree(struct fs_context *fc)
{ … }

static int vboxsf_reconfigure(struct fs_context *fc)
{ … }

static void vboxsf_free_fc(struct fs_context *fc)
{ … }

static const struct fs_context_operations vboxsf_context_ops = …;

static int vboxsf_init_fs_context(struct fs_context *fc)
{ … }

static struct file_system_type vboxsf_fs_type = …;

/* Module initialization/finalization handlers */
static int __init vboxsf_init(void)
{ … }

static void __exit vboxsf_fini(void)
{ … }

module_init(…) …;
module_exit(vboxsf_fini);

MODULE_DESCRIPTION(…) …;
MODULE_AUTHOR(…) …;
MODULE_LICENSE(…) …;
MODULE_ALIAS_FS(…) …;