fs/efivarfs/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/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 */