int qemu_loadvm_state(QEMUFile *f) { LIST_HEAD(, LoadStateEntry) loadvm_handlers = LIST_HEAD_INITIALIZER(loadvm_handlers); LoadStateEntry *le, *new_le; uint8_t section_type; unsigned int v; int ret; v = qemu_get_be32(f); if (v != QEMU_VM_FILE_MAGIC) return -EINVAL; v = qemu_get_be32(f); if (v == QEMU_VM_FILE_VERSION_COMPAT) { fprintf(stderr, "SaveVM v2 format is obsolete and don't work anymore\n"); return -ENOTSUP; } if (v != QEMU_VM_FILE_VERSION) return -ENOTSUP; while ((section_type = qemu_get_byte(f)) != QEMU_VM_EOF) { uint32_t instance_id, version_id, section_id; SaveStateEntry *se; char idstr[257]; int len; switch (section_type) { case QEMU_VM_SECTION_START: case QEMU_VM_SECTION_FULL: /* Read section start */ section_id = qemu_get_be32(f); len = qemu_get_byte(f); qemu_get_buffer(f, (uint8_t *)idstr, len); idstr[len] = 0; instance_id = qemu_get_be32(f); version_id = qemu_get_be32(f); /* Find savevm section */ se = find_se(idstr, instance_id); if (se == NULL) { fprintf(stderr, "Unknown savevm section or instance '%s' %d\n", idstr, instance_id); ret = -EINVAL; goto out; } /* Validate version */ if (version_id > se->version_id) { fprintf(stderr, "savevm: unsupported version %d for '%s' v%d\n", version_id, idstr, se->version_id); ret = -EINVAL; goto out; } /* Add entry */ le = qemu_mallocz(sizeof(*le)); le->se = se; le->section_id = section_id; le->version_id = version_id; LIST_INSERT_HEAD(&loadvm_handlers, le, entry); ret = vmstate_load(f, le->se, le->version_id); if (ret < 0) { fprintf(stderr, "qemu: warning: error while loading state for instance 0x%x of device '%s'\n", instance_id, idstr); goto out; } break; case QEMU_VM_SECTION_PART: case QEMU_VM_SECTION_END: section_id = qemu_get_be32(f); LIST_FOREACH(le, &loadvm_handlers, entry) { if (le->section_id == section_id) { break; } } if (le == NULL) { fprintf(stderr, "Unknown savevm section %d\n", section_id); ret = -EINVAL; goto out; } ret = vmstate_load(f, le->se, le->version_id); if (ret < 0) { fprintf(stderr, "qemu: warning: error while loading state section id %d\n", section_id); goto out; } break; default: fprintf(stderr, "Unknown savevm section type %d\n", section_type); ret = -EINVAL; goto out; } } ret = 0; out: LIST_FOREACH_SAFE(le, &loadvm_handlers, entry, new_le) { LIST_REMOVE(le, entry); qemu_free(le); } if (qemu_file_has_error(f)) ret = -EIO; return ret; }