static int disk_init(struct guest_info * vm, v3_cfg_tree_t * cfg) {
struct disk_state * disk = NULL;
char * path = v3_cfg_val(cfg, "path");
+
char * dev_id = v3_cfg_val(cfg, "ID");
char * filename = v3_cfg_val(cfg, "file");
+ char * writable = v3_cfg_val(cfg, "writable");
+ char * readable = v3_cfg_val(cfg, "readable");
+
+ int allowWrite = ( writable && writable[0] == '1' );
+ int allowRead = ( !readable || readable[0] == '1' );
+
v3_cfg_tree_t * frontend_cfg = v3_cfg_subtree(cfg, "frontend");
disk = (struct disk_state *)V3_Malloc(sizeof(struct disk_state));
if (!path) {
+
PrintError("Missing path (%s) for %s\n", path, dev_id);
return -1;
+
+ }
+
+ if ( allowRead && allowWrite ) {
+ disk->fd = V3_FileOpen(path, FILE_OPEN_MODE_READ | FILE_OPEN_MODE_WRITE );
+ } else if ( allowRead && !allowWrite ) {
+ disk->fd = V3_FileOpen(path, FILE_OPEN_MODE_READ );
+ } else if ( !allowRead && allowWrite ) {
+ disk->fd = V3_FileOpen(path, FILE_OPEN_MODE_WRITE );
+ } else {
+ PrintError("Error on %s: No file mode specified\n", name );
+ return -1;
+
}
- disk->fd = V3_FileOpen(path, 0);
disk->capacity = V3_FileSize(disk->fd);
PrintDebug("Registering FILEDISK %s (path=%s, fd=%lu, size=%lu)\n",
struct vm_device * dev = v3_allocate_device(dev_id, &dev_ops, disk);
if (v3_attach_device(vm, dev) == -1) {
+
PrintError("Could not attach device %s\n", dev_id);
return -1;
+
}
if (v3_dev_connect_blk(vm, v3_cfg_val(frontend_cfg, "tag"),
&blk_ops, frontend_cfg, disk) == -1) {
+
PrintError("Could not connect %s to frontend %s\n",
dev_id, v3_cfg_val(frontend_cfg, "tag"));
return -1;
+
}