static int parallels_open(BlockDriverState *bs, int flags) { BDRVParallelsState *s = bs->opaque; int i; struct parallels_header ph; bs->read_only = 1; // no write support yet if (bdrv_pread(bs->file, 0, &ph, sizeof(ph)) != sizeof(ph)) goto fail; if (memcmp(ph.magic, HEADER_MAGIC, 16) || (le32_to_cpu(ph.version) != HEADER_VERSION)) { goto fail; } bs->total_sectors = le32_to_cpu(ph.nb_sectors); s->tracks = le32_to_cpu(ph.tracks); s->catalog_size = le32_to_cpu(ph.catalog_entries); s->catalog_bitmap = g_malloc(s->catalog_size * 4); if (bdrv_pread(bs->file, 64, s->catalog_bitmap, s->catalog_size * 4) != s->catalog_size * 4) goto fail; for (i = 0; i < s->catalog_size; i++) le32_to_cpus(&s->catalog_bitmap[i]); qemu_co_mutex_init(&s->lock); return 0; fail: if (s->catalog_bitmap) g_free(s->catalog_bitmap); return -1; }