#include <palacios/vmm_dev_mgr.h>
-#ifndef CONFIG_DEBUG_RAMDISK
+#ifndef V3_CONFIG_DEBUG_RAMDISK
#undef PrintDebug
#define PrintDebug(fmt, args...)
#endif
PrintDebug("Reading %d bytes from %p to %p\n", (uint32_t)num_bytes, (uint8_t *)(disk->disk_image + lba), buf);
+ if (lba + num_bytes > disk->capacity) {
+ PrintError("read out of bounds: lba=%llu (%p), num_bytes=%llu, capacity=%d (%p)\n",
+ lba, (void *)(addr_t)lba, num_bytes, disk->capacity, (void *)(addr_t)disk->capacity);
+ return -1;
+ }
+
memcpy(buf, (uint8_t *)(disk->disk_image + lba), num_bytes);
return 0;
PrintDebug("Writing %d bytes from %p to %p\n", (uint32_t)num_bytes, buf, (uint8_t *)(disk->disk_image + lba));
+ if (lba + num_bytes > disk->capacity) {
+ PrintError("write out of bounds: lba=%llu (%p), num_bytes=%llu, capacity=%d (%p)\n",
+ lba, (void *)(addr_t)lba, num_bytes, disk->capacity, (void *)(addr_t)disk->capacity);
+ return -1;
+ }
+
+
memcpy((uint8_t *)(disk->disk_image + lba), buf, num_bytes);
return 0;
-static int disk_free(struct vm_device * dev) {
+static int disk_free(struct disk_state * state) {
+
+ V3_Free(state);
return 0;
}
static struct v3_device_ops dev_ops = {
- .free = disk_free,
- .reset = NULL,
- .start = NULL,
- .stop = NULL,
+ .free = (int (*)(void *))disk_free,
};
static int disk_init(struct v3_vm_info * vm, v3_cfg_tree_t * cfg) {
struct disk_state * disk = NULL;
struct v3_cfg_file * file = NULL;
- char * name = v3_cfg_val(cfg, "name");
+ char * dev_id = v3_cfg_val(cfg, "ID");
char * filename = v3_cfg_val(cfg, "file");
v3_cfg_tree_t * frontend_cfg = v3_cfg_subtree(cfg, "frontend");
- disk = (struct disk_state *)V3_Malloc(sizeof(struct disk_state));
- memset(disk, 0, sizeof(struct disk_state));
-
-
if (!filename) {
- PrintError("Missing filename (%s) for %s\n", filename, name);
+ PrintError("Missing filename (%s) for %s\n", filename, dev_id);
return -1;
}
return -1;
}
+
+ disk = (struct disk_state *)V3_Malloc(sizeof(struct disk_state));
+ memset(disk, 0, sizeof(struct disk_state));
+
disk->disk_image = file->data;
disk->capacity = file->size;
PrintDebug("Registering RAMDISK at %p (size=%d)\n",
(void *)file->data, (uint32_t)file->size);
- struct vm_device * dev = v3_allocate_device(name, &dev_ops, disk);
- if (v3_attach_device(vm, dev) == -1) {
- PrintError("Could not attach device %s\n", name);
+ struct vm_device * dev = v3_add_device(vm, dev_id, &dev_ops, disk);
+
+ if (dev == NULL) {
+ PrintError("Could not attach device %s\n", dev_id);
+ V3_Free(disk);
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",
- name, v3_cfg_val(frontend_cfg, "tag"));
+ dev_id, v3_cfg_val(frontend_cfg, "tag"));
+ v3_remove_device(dev);
return -1;
}