+#ifdef V3_CONFIG_FILE
+#include <interfaces/vmm_file.h>
+
+
+struct file_ctx {
+ v3_file_t file;
+ uint64_t offset;
+ char * filename;
+};
+
+
+static void * dir_open_chkpt(char * url, chkpt_mode_t mode) {
+ if (mode == SAVE) {
+ if (v3_mkdir(url, 0755, 1) != 0) {
+ return NULL;
+ }
+ }
+
+ return url;
+}
+
+
+
+static int dir_close_chkpt(void * store_data) {
+ return 0;
+}
+
+static void * dir_open_ctx(void * store_data,
+ void * parent_ctx,
+ char * name) {
+
+ char * url = store_data;
+ struct file_ctx * ctx = NULL;
+
+
+ ctx = V3_Malloc(sizeof(struct file_ctx));
+ memset(ctx, 0, sizeof(struct file_ctx));
+
+ ctx->filename = V3_Malloc(strlen(url) + strlen(name) + 5);
+ memset(ctx->filename, 0, strlen(url) + strlen(name) + 5);
+
+ snprintf(ctx->filename, strlen(url) + strlen(name) + 5, "%s/%s", url, name);
+
+
+ ctx->file = v3_file_open(NULL, ctx->filename, FILE_OPEN_MODE_READ | FILE_OPEN_MODE_WRITE | FILE_OPEN_MODE_CREATE);
+
+ return ctx;
+}
+
+static int dir_close_ctx(void * store_data, void * ctx) {
+ struct file_ctx * file_ctx = ctx;
+
+ v3_file_close(file_ctx->file);
+
+ V3_Free(file_ctx->filename);
+ V3_Free(file_ctx);
+
+ return 0;
+}
+
+static int dir_save(void * store_data, void * ctx,
+ char * tag, uint64_t len, void * buf) {
+ struct file_ctx * file_ctx = ctx;
+ uint64_t ret = 0;
+
+ ret = v3_file_write(file_ctx->file, buf, len, file_ctx->offset);
+
+ file_ctx->offset += ret;
+
+ return 0;
+}
+
+static int dir_load(void * store_data, void * ctx,
+ char * tag, uint64_t len, void * buf) {
+ struct file_ctx * file_ctx = ctx;
+ uint64_t ret = 0;
+
+ ret = v3_file_read(file_ctx->file, buf, len, file_ctx->offset);
+
+ file_ctx->offset += ret;
+
+ return 0;
+}
+
+
+static struct chkpt_interface dir_store = {
+ .name = "DIR",
+ .open_chkpt = dir_open_chkpt,
+ .close_chkpt = dir_close_chkpt,
+ .open_ctx = dir_open_ctx,
+ .close_ctx = dir_close_ctx,
+ .save = dir_save,
+ .load = dir_load
+};
+
+register_chkpt_store(dir_store);
+
+
+
+#endif
+
+
+
