/* * Copyright (C) 2019-2020 Alibaba Group Holding Limited */ #include #include #include #include "kv_linux.h" #define TAG "NV" static kv_t g_kv; static aos_kv_mutex_t g_kv_lock; static int __kv_init(const char *pathname) { g_kv_lock.key_file = pathname; int ret = kv_init(&g_kv, pathname); /* shmkey ftok need real path, must call after kv_init */ aos_kv_mutex_new(&g_kv_lock); return ret; } static int __kv_setdata(char *key, char *buf, int bufsize) { if (g_kv.handle < 0) { return -1; } aos_kv_mutex_lock(&g_kv_lock, -1); int ret = kv_set(&g_kv, key, buf, bufsize) >= 0 ? 0 : -1; aos_kv_mutex_unlock(&g_kv_lock); return ret; } static int __kv_getdata(char *key, char *buf, int bufsize) { if (g_kv.handle < 0) { return -1; } if (key == NULL || buf == NULL || bufsize <= 0) return -1; aos_kv_mutex_lock(&g_kv_lock, -1); int ret = kv_get(&g_kv, key, buf, bufsize); aos_kv_mutex_unlock(&g_kv_lock); return ret; } static int __kv_del(char *key) { if (g_kv.handle < 0) { return -1; } aos_kv_mutex_lock(&g_kv_lock, -1); int ret = kv_rm(&g_kv, key); aos_kv_mutex_unlock(&g_kv_lock); return ret; } static int __kv_reset(void) { if (g_kv.handle < 0) { return -1; } aos_kv_mutex_lock(&g_kv_lock, -1); int ret = kv_reset(&g_kv); aos_kv_mutex_unlock(&g_kv_lock); return ret; } /************************* * Set Get API *************************/ int nvram_init(const char *pathname) { return __kv_init(pathname); } int nvram_get_val(const char *key, char *value, int len) { int ret; ret = __kv_getdata((char *)key, (char *)value, len - 1); if(ret > 0) { value[ret < len ? ret : len - 1] = '\0'; } return ret; } int nvram_set_val(const char *key, char *value) { return __kv_setdata((char *)key, (void *)value, strlen(value)); } int nvram_del(const char *key) { return __kv_del((char *)key); } int nvram_reset(void) { return __kv_reset(); }