static int efi_pstore_erase(enum pstore_type_id type, u64 id, int count, struct timespec time, struct pstore_info *psi) { struct pstore_erase_data edata; struct efivar_entry *entry = NULL; char name[DUMP_NAME_LEN]; efi_char16_t efi_name[DUMP_NAME_LEN]; int found, i; unsigned int part; do_div(id, 1000); part = do_div(id, 100); sprintf(name, "dump-type%u-%u-%d-%lu", type, part, count, time.tv_sec); for (i = 0; i < DUMP_NAME_LEN; i++) efi_name[i] = name[i]; edata.id = part; edata.type = type; edata.count = count; edata.time = time; edata.name = efi_name; efivar_entry_iter_begin(); found = __efivar_entry_iter(efi_pstore_erase_func, &efivar_sysfs_list, &edata, &entry); efivar_entry_iter_end(); if (found) efivar_unregister(entry); return 0; }
static int efivarfs_fill_super(struct super_block *sb, void *data, int silent) { struct inode *inode = NULL; struct dentry *root; int err; efivarfs_sb = sb; sb->s_maxbytes = MAX_LFS_FILESIZE; sb->s_blocksize = PAGE_CACHE_SIZE; sb->s_blocksize_bits = PAGE_CACHE_SHIFT; sb->s_magic = EFIVARFS_MAGIC; sb->s_op = &efivarfs_ops; sb->s_d_op = &efivarfs_d_ops; sb->s_time_gran = 1; inode = efivarfs_get_inode(sb, NULL, S_IFDIR | 0755, 0, true); if (!inode) return -ENOMEM; inode->i_op = &efivarfs_dir_inode_operations; root = d_make_root(inode); sb->s_root = root; if (!root) return -ENOMEM; INIT_LIST_HEAD(&efivarfs_list); err = efivar_init(efivarfs_callback, (void *)sb, false, true, &efivarfs_list); if (err) __efivar_entry_iter(efivarfs_destroy, &efivarfs_list, NULL, NULL); return err; }
static void efivarfs_kill_sb(struct super_block *sb) { kill_litter_super(sb); efivarfs_sb = NULL; /* Remove all entries and destroy */ __efivar_entry_iter(efivarfs_destroy, &efivarfs_list, NULL, NULL); }
static void efivars_sysfs_exit(void) { /* Remove all entries and destroy */ __efivar_entry_iter(efivar_sysfs_destroy, &efivar_sysfs_list, NULL, NULL); if (efivars_new_var) sysfs_remove_bin_file(&efivars_kset->kobj, efivars_new_var); if (efivars_del_var) sysfs_remove_bin_file(&efivars_kset->kobj, efivars_del_var); kfree(efivars_new_var); kfree(efivars_del_var); kset_unregister(efivars_kset); }
static ssize_t efi_pstore_read(u64 *id, enum pstore_type_id *type, int *count, struct timespec *timespec, char **buf, struct pstore_info *psi) { struct pstore_read_data data; data.id = id; data.type = type; data.count = count; data.timespec = timespec; data.buf = buf; return __efivar_entry_iter(efi_pstore_read_func, &efivar_sysfs_list, &data, (struct efivar_entry **)&psi->data); }