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/list.h>
10 #include <linux/efi.h>
11
12 struct efivarfs_mount_opts {
13 kuid_t uid;
14 kgid_t gid;
15 };
16
17 struct efivarfs_fs_info {
18 struct efivarfs_mount_opts mount_opts;
19 struct list_head efivarfs_list;
20 struct super_block *sb;
21 struct notifier_block nb;
22 };
23
24 struct efi_variable {
25 efi_char16_t VariableName[EFI_VAR_NAME_LEN/sizeof(efi_char16_t)];
26 efi_guid_t VendorGuid;
27 __u32 Attributes;
28 };
29
30 struct efivar_entry {
31 struct efi_variable var;
32 struct list_head list;
33 struct kobject kobj;
34 };
35
36 int efivar_init(int (*func)(efi_char16_t *, efi_guid_t, unsigned long, void *,
37 struct list_head *),
38 void *data, struct list_head *head);
39
40 int efivar_entry_add(struct efivar_entry *entry, struct list_head *head);
41 void __efivar_entry_add(struct efivar_entry *entry, struct list_head *head);
42 void efivar_entry_remove(struct efivar_entry *entry);
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 int efivar_entry_iter(int (*func)(struct efivar_entry *, void *),
54 struct list_head *head, void *data);
55
56 bool efivar_validate(efi_guid_t vendor, efi_char16_t *var_name, u8 *data,
57 unsigned long data_size);
58 bool efivar_variable_is_removable(efi_guid_t vendor, const char *name,
59 size_t len);
60
61 extern const struct file_operations efivarfs_file_operations;
62 extern const struct inode_operations efivarfs_dir_inode_operations;
63 extern bool efivarfs_valid_name(const char *str, int len);
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
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