diff options
Diffstat (limited to 'block-qcow2.c')
| -rw-r--r-- | block-qcow2.c | 58 |
1 files changed, 1 insertions, 57 deletions
diff --git a/block-qcow2.c b/block-qcow2.c index 8a5b621..465dcd6 100644 --- a/block-qcow2.c +++ b/block-qcow2.c @@ -259,8 +259,6 @@ static int qcow_open(BlockDriverState *bs, const char *filename, int flags) goto fail; s->l1_table_offset = header.l1_table_offset; s->l1_table = qemu_malloc(s->l1_size * sizeof(uint64_t)); - if (!s->l1_table) - goto fail; if (bdrv_pread(s->hd, s->l1_table_offset, s->l1_table, s->l1_size * sizeof(uint64_t)) != s->l1_size * sizeof(uint64_t)) goto fail; @@ -269,16 +267,10 @@ static int qcow_open(BlockDriverState *bs, const char *filename, int flags) } /* alloc L2 cache */ s->l2_cache = qemu_malloc(s->l2_size * L2_CACHE_SIZE * sizeof(uint64_t)); - if (!s->l2_cache) - goto fail; s->cluster_cache = qemu_malloc(s->cluster_size); - if (!s->cluster_cache) - goto fail; /* one more sector for decompressed data alignment */ s->cluster_data = qemu_malloc(QCOW_MAX_CRYPT_CLUSTERS * s->cluster_size + 512); - if (!s->cluster_data) - goto fail; s->cluster_cache_offset = -1; if (refcount_init(bs) < 0) @@ -459,8 +451,6 @@ static int grow_l1_table(BlockDriverState *bs, int min_size) new_l1_size2 = sizeof(uint64_t) * new_l1_size; new_l1_table = qemu_mallocz(new_l1_size2); - if (!new_l1_table) - return -ENOMEM; memcpy(new_l1_table, s->l1_table, s->l1_size * sizeof(uint64_t)); /* write new table (align to cluster) */ @@ -893,8 +883,7 @@ static int alloc_cluster_link_l2(BlockDriverState *bs, uint64_t cluster_offset, if (m->nb_clusters == 0) return 0; - if (!(old_cluster = qemu_malloc(m->nb_clusters * sizeof(uint64_t)))) - return -ENOMEM; + old_cluster = qemu_malloc(m->nb_clusters * sizeof(uint64_t)); /* copy content of unmodified sectors */ start_sect = (m->offset & ~(s->cluster_size - 1)) >> 9; @@ -1393,10 +1382,6 @@ static void qcow_aio_write_cb(void *opaque, int ret) if (!acb->cluster_data) { acb->cluster_data = qemu_mallocz(QCOW_MAX_CRYPT_CLUSTERS * s->cluster_size); - if (!acb->cluster_data) { - ret = -ENOMEM; - goto fail; - } } encrypt_sectors(s, acb->sector_num, acb->cluster_data, acb->buf, acb->n, 1, &s->aes_encrypt_key); @@ -1521,11 +1506,7 @@ static int qcow_create(const char *filename, int64_t total_size, offset += align_offset(l1_size * sizeof(uint64_t), s->cluster_size); s->refcount_table = qemu_mallocz(s->cluster_size); - if (!s->refcount_table) - goto fail; s->refcount_block = qemu_mallocz(s->cluster_size); - if (!s->refcount_block) - goto fail; s->refcount_table_offset = offset; header.refcount_table_offset = cpu_to_be64(offset); @@ -1562,11 +1543,6 @@ static int qcow_create(const char *filename, int64_t total_size, qemu_free(s->refcount_block); close(fd); return 0; - fail: - qemu_free(s->refcount_table); - qemu_free(s->refcount_block); - close(fd); - return -ENOMEM; } static int qcow_make_empty(BlockDriverState *bs) @@ -1613,8 +1589,6 @@ static int qcow_write_compressed(BlockDriverState *bs, int64_t sector_num, return -EINVAL; out_buf = qemu_malloc(s->cluster_size + (s->cluster_size / 1000) + 128); - if (!out_buf) - return -ENOMEM; /* best compression, small window, no zlib header */ memset(&strm, 0, sizeof(strm)); @@ -1699,8 +1673,6 @@ static int update_snapshot_refcount(BlockDriverState *bs, l1_allocated = 0; if (l1_table_offset != s->l1_table_offset) { l1_table = qemu_malloc(l1_size2); - if (!l1_table) - goto fail; l1_allocated = 1; if (bdrv_pread(s->hd, l1_table_offset, l1_table, l1_size2) != l1_size2) @@ -1715,8 +1687,6 @@ static int update_snapshot_refcount(BlockDriverState *bs, l2_size = s->l2_size * sizeof(uint64_t); l2_table = qemu_malloc(l2_size); - if (!l2_table) - goto fail; l1_modified = 0; for(i = 0; i < l1_size; i++) { l2_offset = l1_table[i]; @@ -1827,8 +1797,6 @@ static int qcow_read_snapshots(BlockDriverState *bs) offset = s->snapshots_offset; s->snapshots = qemu_mallocz(s->nb_snapshots * sizeof(QCowSnapshot)); - if (!s->snapshots) - goto fail; for(i = 0; i < s->nb_snapshots; i++) { offset = align_offset(offset, 8); if (bdrv_pread(s->hd, offset, &h, sizeof(h)) != sizeof(h)) @@ -1849,16 +1817,12 @@ static int qcow_read_snapshots(BlockDriverState *bs) offset += extra_data_size; sn->id_str = qemu_malloc(id_str_size + 1); - if (!sn->id_str) - goto fail; if (bdrv_pread(s->hd, offset, sn->id_str, id_str_size) != id_str_size) goto fail; offset += id_str_size; sn->id_str[id_str_size] = '\0'; sn->name = qemu_malloc(name_size + 1); - if (!sn->name) - goto fail; if (bdrv_pread(s->hd, offset, sn->name, name_size) != name_size) goto fail; offset += name_size; @@ -2024,8 +1988,6 @@ static int qcow_snapshot_create(BlockDriverState *bs, sn->l1_size = s->l1_size; l1_table = qemu_malloc(s->l1_size * sizeof(uint64_t)); - if (!l1_table) - goto fail; for(i = 0; i < s->l1_size; i++) { l1_table[i] = cpu_to_be64(s->l1_table[i]); } @@ -2037,8 +1999,6 @@ static int qcow_snapshot_create(BlockDriverState *bs, l1_table = NULL; snapshots1 = qemu_malloc((s->nb_snapshots + 1) * sizeof(QCowSnapshot)); - if (!snapshots1) - goto fail; if (s->snapshots) { memcpy(snapshots1, s->snapshots, s->nb_snapshots * sizeof(QCowSnapshot)); qemu_free(s->snapshots); @@ -2145,8 +2105,6 @@ static int qcow_snapshot_list(BlockDriverState *bs, int i; sn_tab = qemu_mallocz(s->nb_snapshots * sizeof(QEMUSnapshotInfo)); - if (!sn_tab) - goto fail; for(i = 0; i < s->nb_snapshots; i++) { sn_info = sn_tab + i; sn = s->snapshots + i; @@ -2161,10 +2119,6 @@ static int qcow_snapshot_list(BlockDriverState *bs, } *psn_tab = sn_tab; return s->nb_snapshots; - fail: - qemu_free(sn_tab); - *psn_tab = NULL; - return -ENOMEM; } /*********************************************************/ @@ -2176,12 +2130,8 @@ static int refcount_init(BlockDriverState *bs) int ret, refcount_table_size2, i; s->refcount_block_cache = qemu_malloc(s->cluster_size); - if (!s->refcount_block_cache) - goto fail; refcount_table_size2 = s->refcount_table_size * sizeof(uint64_t); s->refcount_table = qemu_malloc(refcount_table_size2); - if (!s->refcount_table) - goto fail; if (s->refcount_table_size > 0) { ret = bdrv_pread(s->hd, s->refcount_table_offset, s->refcount_table, refcount_table_size2); @@ -2384,8 +2334,6 @@ static int grow_refcount_table(BlockDriverState *bs, int min_size) #endif new_table_size2 = new_table_size * sizeof(uint64_t); new_table = qemu_mallocz(new_table_size2); - if (!new_table) - return -ENOMEM; memcpy(new_table, s->refcount_table, s->refcount_table_size * sizeof(uint64_t)); for(i = 0; i < s->refcount_table_size; i++) @@ -2556,8 +2504,6 @@ static int check_refcounts_l1(BlockDriverState *bs, l1_table_offset, l1_size2); l1_table = qemu_malloc(l1_size2); - if (!l1_table) - goto fail; if (bdrv_pread(s->hd, l1_table_offset, l1_table, l1_size2) != l1_size2) goto fail; @@ -2566,8 +2512,6 @@ static int check_refcounts_l1(BlockDriverState *bs, l2_size = s->l2_size * sizeof(uint64_t); l2_table = qemu_malloc(l2_size); - if (!l2_table) - goto fail; for(i = 0; i < l1_size; i++) { l2_offset = l1_table[i]; if (l2_offset) { |
