1 /* 2 * Copyright (c) 2013, Google, Inc. All rights reserved 3 * 4 * Use of this source code is governed by a MIT-style 5 * license that can be found in the LICENSE file or at 6 * https://opensource.org/licenses/MIT 7 */ 8 #pragma once 9 10 #include <stdbool.h> 11 #include <sys/types.h> 12 #include <lib/bio.h> 13 14 #ifndef SYSPARAM_ALLOW_WRITE 15 #define SYSPARAM_ALLOW_WRITE 0 16 #endif 17 18 status_t sysparam_scan(bdev_t *bdev, off_t offset, size_t len); 19 status_t sysparam_reload(void); 20 21 void sysparam_dump(bool show_all); 22 23 ssize_t sysparam_length(const char *name); 24 ssize_t sysparam_read(const char *name, void *data, size_t len); 25 status_t sysparam_get_ptr(const char *name, const void **ptr, size_t *len); 26 27 #if SYSPARAM_ALLOW_WRITE 28 status_t sysparam_add(const char *name, const void *value, size_t len); 29 status_t sysparam_remove(const char *name); 30 status_t sysparam_lock(const char *name); 31 status_t sysparam_write(void); 32 #endif 33 34