internal.h

 1/* SPDX-License-Identifier: GPL-2.0-only */
 2/*
 3 * Copyright (C) 2012 Red Hat, Inc.
 4 * Copyright (C) 2012 Jeremy Kerr <jeremy.kerr@canonical.com>
 5 */
 6#ifndef EFIVAR_FS_INTERNAL_H
 7#define EFIVAR_FS_INTERNAL_H
 8
 9#include <linux/efi.h>
10
11struct efivarfs_mount_opts {
12	kuid_t uid;
13	kgid_t gid;
14};
15
16struct efivarfs_fs_info {
17	struct efivarfs_mount_opts mount_opts;
18	struct super_block *sb;
19	struct notifier_block nb;
20};
21
22struct efi_variable {
23	efi_char16_t  VariableName[EFI_VAR_NAME_LEN/sizeof(efi_char16_t)];
24	efi_guid_t    VendorGuid;
25};
26
27struct efivar_entry {
28	struct efi_variable var;
29	struct inode vfs_inode;
30	unsigned long open_count;
31	bool removed;
32};
33
34static inline struct efivar_entry *efivar_entry(struct inode *inode)
35{
36	return container_of(inode, struct efivar_entry, vfs_inode);
37}
38
39int efivar_init(int (*func)(efi_char16_t *, efi_guid_t, unsigned long, void *),
40		void *data, bool duplicate_check);
41
42int efivar_entry_delete(struct efivar_entry *entry);
43
44int efivar_entry_size(struct efivar_entry *entry, unsigned long *size);
45int __efivar_entry_get(struct efivar_entry *entry, u32 *attributes,
46		       unsigned long *size, void *data);
47int efivar_entry_get(struct efivar_entry *entry, u32 *attributes,
48		     unsigned long *size, void *data);
49int efivar_entry_set_get_size(struct efivar_entry *entry, u32 attributes,
50			      unsigned long *size, void *data, bool *set);
51
52
53bool efivar_validate(efi_guid_t vendor, efi_char16_t *var_name, u8 *data,
54		     unsigned long data_size);
55bool efivar_variable_is_removable(efi_guid_t vendor, const char *name,
56				  size_t len);
57char *efivar_get_utf8name(const efi_char16_t *name16, efi_guid_t *vendor);
58bool efivarfs_variable_is_present(efi_char16_t *variable_name,
59				  efi_guid_t *vendor, void *data);
60
61extern const struct file_operations efivarfs_file_operations;
62extern const struct inode_operations efivarfs_dir_inode_operations;
63extern struct inode *efivarfs_get_inode(struct super_block *sb,
64			const struct inode *dir, int mode, dev_t dev,
65			bool is_removable);
66
67#endif /* EFIVAR_FS_INTERNAL_H */