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
11 struct efivarfs_mount_opts {
12 kuid_t uid;
13 kgid_t gid;
14 };
15
16 struct efivarfs_fs_info {
17 struct efivarfs_mount_opts mount_opts;
18 struct super_block *sb;
19 struct notifier_block nb;
20 struct notifier_block pm_nb;
21 };
22
23 struct efi_variable {
24 efi_char16_t VariableName[EFI_VAR_NAME_LEN/sizeof(efi_char16_t)];
25 efi_guid_t VendorGuid;
26 };
27
28 struct efivar_entry {
29 struct efi_variable var;
30 struct inode vfs_inode;
31 unsigned long open_count;
32 bool removed;
33 };
34
efivar_entry(struct inode * inode)35 static inline struct efivar_entry *efivar_entry(struct inode *inode)
36 {
37 return container_of(inode, struct efivar_entry, vfs_inode);
38 }
39
40 int efivar_init(int (*func)(efi_char16_t *, efi_guid_t, unsigned long, void *),
41 void *data, bool duplicate_check);
42
43 int efivar_entry_delete(struct efivar_entry *entry);
44
45 int efivar_entry_size(struct efivar_entry *entry, unsigned long *size);
46 int __efivar_entry_get(struct efivar_entry *entry, u32 *attributes,
47 unsigned long *size, void *data);
48 int efivar_entry_get(struct efivar_entry *entry, u32 *attributes,
49 unsigned long *size, void *data);
50 int efivar_entry_set_get_size(struct efivar_entry *entry, u32 attributes,
51 unsigned long *size, void *data, bool *set);
52
53
54 bool efivar_validate(efi_guid_t vendor, efi_char16_t *var_name, u8 *data,
55 unsigned long data_size);
56 bool efivar_variable_is_removable(efi_guid_t vendor, const char *name,
57 size_t len);
58 char *efivar_get_utf8name(const efi_char16_t *name16, efi_guid_t *vendor);
59 bool efivarfs_variable_is_present(efi_char16_t *variable_name,
60 efi_guid_t *vendor, void *data);
61
62 extern const struct file_operations efivarfs_file_operations;
63 extern const struct inode_operations efivarfs_dir_inode_operations;
64 extern struct inode *efivarfs_get_inode(struct super_block *sb,
65 const struct inode *dir, int mode, dev_t dev,
66 bool is_removable);
67
68 #endif /* EFIVAR_FS_INTERNAL_H */
69