int env_save(void)
{
int size;
unsigned char *buffer;
unsigned char *buffer_end;
unsigned char *ptr;
queue_t *qb;
cfe_envvar_t *env;
int namelen;
int valuelen;
int flg;
flg = nvram_open();
if (flg < 0) return flg;
nvram_erase();
size = nvram_getsize();
buffer = KMALLOC(size,0);
if (buffer == NULL) return CFE_ERR_NOMEM;
buffer_end = buffer + size;
ptr = buffer;
for (qb = env_envvars.q_next; qb != &env_envvars; qb = qb->q_next) {
env = (cfe_envvar_t *) qb;
if (env->flags & (ENV_FLG_BUILTIN)) continue;
namelen = strlen(env->name);
valuelen = strlen(env->value);
if ((ptr + 2 + namelen + valuelen + 1 + 1 + 1) > buffer_end) break;
*ptr++ = ENV_TLV_TYPE_ENV; /* TLV record type */
*ptr++ = (namelen + valuelen + 1 + 1); /* TLV record length */
*ptr++ = (unsigned char)env->flags;
memcpy(ptr,env->name,namelen); /* TLV record data */
ptr += namelen;
*ptr++ = '=';
memcpy(ptr,env->value,valuelen);
ptr += valuelen;
}
*ptr++ = ENV_TLV_TYPE_END;
size = nvram_write(buffer,0,ptr-buffer);
KFREE(buffer);
nvram_close();
return (size == (ptr-buffer)) ? 0 : CFE_ERR_IOERR;
}
static retval_t cmd_nvram_erase_all(const subsystem_t *self, frame_t *iframe, frame_t *oframe)
{
uint32_t key;
if (RV_SUCCESS != frame_get_u32(iframe, &key)) return RV_ILLEGAL;
if (0x5ABEDA7A != key) return RV_PERM;
return nvram_erase();
}
