mirror of
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
synced 2025-04-13 09:59:31 +00:00
b5d1e6ee76
Hibernation allows other OSs to boot and thus the variable state might
be altered by the time the hibernation image is resumed. Resync the
variable state by looping over all the dentries and update the size
(in case of alteration) delete any which no-longer exist. Finally,
loop over all efi variables creating any which don't have
corresponding dentries.
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
[ardb: - apply error pointer fixup from Dan Carpenter
- rebase onto latest version of James's efivarfs rework]
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
68 lines
2 KiB
C
68 lines
2 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
|
|
/*
|
|
* Copyright (C) 2012 Red Hat, Inc.
|
|
* Copyright (C) 2012 Jeremy Kerr <jeremy.kerr@canonical.com>
|
|
*/
|
|
#ifndef EFIVAR_FS_INTERNAL_H
|
|
#define EFIVAR_FS_INTERNAL_H
|
|
|
|
#include <linux/efi.h>
|
|
|
|
struct efivarfs_mount_opts {
|
|
kuid_t uid;
|
|
kgid_t gid;
|
|
};
|
|
|
|
struct efivarfs_fs_info {
|
|
struct efivarfs_mount_opts mount_opts;
|
|
struct super_block *sb;
|
|
struct notifier_block nb;
|
|
struct notifier_block pm_nb;
|
|
};
|
|
|
|
struct efi_variable {
|
|
efi_char16_t VariableName[EFI_VAR_NAME_LEN/sizeof(efi_char16_t)];
|
|
efi_guid_t VendorGuid;
|
|
};
|
|
|
|
struct efivar_entry {
|
|
struct efi_variable var;
|
|
struct inode vfs_inode;
|
|
unsigned long open_count;
|
|
bool removed;
|
|
};
|
|
|
|
static inline struct efivar_entry *efivar_entry(struct inode *inode)
|
|
{
|
|
return container_of(inode, struct efivar_entry, vfs_inode);
|
|
}
|
|
|
|
int efivar_init(int (*func)(efi_char16_t *, efi_guid_t, unsigned long, void *),
|
|
void *data, bool duplicate_check);
|
|
|
|
int efivar_entry_delete(struct efivar_entry *entry);
|
|
|
|
int efivar_entry_size(struct efivar_entry *entry, unsigned long *size);
|
|
int __efivar_entry_get(struct efivar_entry *entry, u32 *attributes,
|
|
unsigned long *size, void *data);
|
|
int efivar_entry_get(struct efivar_entry *entry, u32 *attributes,
|
|
unsigned long *size, void *data);
|
|
int efivar_entry_set_get_size(struct efivar_entry *entry, u32 attributes,
|
|
unsigned long *size, void *data, bool *set);
|
|
|
|
|
|
bool efivar_validate(efi_guid_t vendor, efi_char16_t *var_name, u8 *data,
|
|
unsigned long data_size);
|
|
bool efivar_variable_is_removable(efi_guid_t vendor, const char *name,
|
|
size_t len);
|
|
char *efivar_get_utf8name(const efi_char16_t *name16, efi_guid_t *vendor);
|
|
bool efivarfs_variable_is_present(efi_char16_t *variable_name,
|
|
efi_guid_t *vendor, void *data);
|
|
|
|
extern const struct file_operations efivarfs_file_operations;
|
|
extern const struct inode_operations efivarfs_dir_inode_operations;
|
|
extern struct inode *efivarfs_get_inode(struct super_block *sb,
|
|
const struct inode *dir, int mode, dev_t dev,
|
|
bool is_removable);
|
|
|
|
#endif /* EFIVAR_FS_INTERNAL_H */
|