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 unsigned long DataSize; 28 __u8 Data[1024]; 29 efi_status_t Status; 30 __u32 Attributes; 31 } __attribute__((packed)); 32 33 struct efivar_entry { 34 struct efi_variable var; 35 struct list_head list; 36 struct kobject kobj; 37 }; 38 39 int efivar_init(int (*func)(efi_char16_t *, efi_guid_t, unsigned long, void *, 40 struct list_head *), 41 void *data, struct list_head *head); 42 43 int efivar_entry_add(struct efivar_entry *entry, struct list_head *head); 44 void __efivar_entry_add(struct efivar_entry *entry, struct list_head *head); 45 void efivar_entry_remove(struct efivar_entry *entry); 46 int efivar_entry_delete(struct efivar_entry *entry); 47 48 int efivar_entry_size(struct efivar_entry *entry, unsigned long *size); 49 int __efivar_entry_get(struct efivar_entry *entry, u32 *attributes, 50 unsigned long *size, void *data); 51 int efivar_entry_get(struct efivar_entry *entry, u32 *attributes, 52 unsigned long *size, void *data); 53 int efivar_entry_set_get_size(struct efivar_entry *entry, u32 attributes, 54 unsigned long *size, void *data, bool *set); 55 56 int efivar_entry_iter(int (*func)(struct efivar_entry *, void *), 57 struct list_head *head, void *data); 58 59 bool efivar_validate(efi_guid_t vendor, efi_char16_t *var_name, u8 *data, 60 unsigned long data_size); 61 bool efivar_variable_is_removable(efi_guid_t vendor, const char *name, 62 size_t len); 63 64 extern const struct file_operations efivarfs_file_operations; 65 extern const struct inode_operations efivarfs_dir_inode_operations; 66 extern bool efivarfs_valid_name(const char *str, int len); 67 extern struct inode *efivarfs_get_inode(struct super_block *sb, 68 const struct inode *dir, int mode, dev_t dev, 69 bool is_removable); 70 71 #endif /* EFIVAR_FS_INTERNAL_H */ 72