diff options
author | Kevin Wolf <kwolf@redhat.com> | 2011-11-16 17:46:29 +0100 |
---|---|---|
committer | Kevin Wolf <kwolf@redhat.com> | 2011-12-05 14:51:36 +0100 |
commit | 03343166f703d5c8f02b8519f8493c56e5541ae7 (patch) | |
tree | b0c8ef90437752ab3e73177e1dbea38c5760f0c1 /block | |
parent | d69969c4046a81af106e723ff1bc2740365e67c1 (diff) |
qcow2: Cleanups and memleak fix in qcow2_snapshot_create
sn->id_str could be leaked before this. The rest of this patch changes
comments, fixes coding style or removes checks that are unnecessary with
g_malloc.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
Diffstat (limited to 'block')
-rw-r--r-- | block/qcow2-snapshot.c | 26 |
1 files changed, 11 insertions, 15 deletions
diff --git a/block/qcow2-snapshot.c b/block/qcow2-snapshot.c index 1976df7f0..53d9233ba 100644 --- a/block/qcow2-snapshot.c +++ b/block/qcow2-snapshot.c @@ -284,21 +284,20 @@ int qcow2_snapshot_create(BlockDriverState *bs, QEMUSnapshotInfo *sn_info) memset(sn, 0, sizeof(*sn)); + /* Generate an ID if it wasn't passed */ if (sn_info->id_str[0] == '\0') { - /* compute a new id */ find_new_snapshot_id(bs, sn_info->id_str, sizeof(sn_info->id_str)); } - /* check that the ID is unique */ - if (find_snapshot_by_id(bs, sn_info->id_str) >= 0) + /* Check that the ID is unique */ + if (find_snapshot_by_id(bs, sn_info->id_str) >= 0) { return -ENOENT; + } + /* Populate sn with passed data */ sn->id_str = g_strdup(sn_info->id_str); - if (!sn->id_str) - goto fail; sn->name = g_strdup(sn_info->name); - if (!sn->name) - goto fail; + sn->vm_state_size = sn_info->vm_state_size; sn->date_sec = sn_info->date_sec; sn->date_nsec = sn_info->date_nsec; @@ -308,7 +307,7 @@ int qcow2_snapshot_create(BlockDriverState *bs, QEMUSnapshotInfo *sn_info) if (ret < 0) goto fail; - /* create the L1 table of the snapshot */ + /* Allocate the L1 table of the snapshot and copy the current one there. */ l1_table_offset = qcow2_alloc_clusters(bs, s->l1_size * sizeof(uint64_t)); if (l1_table_offset < 0) { goto fail; @@ -318,12 +317,7 @@ int qcow2_snapshot_create(BlockDriverState *bs, QEMUSnapshotInfo *sn_info) sn->l1_table_offset = l1_table_offset; sn->l1_size = s->l1_size; - if (s->l1_size != 0) { - l1_table = g_malloc(s->l1_size * sizeof(uint64_t)); - } else { - l1_table = NULL; - } - + l1_table = g_malloc(s->l1_size * sizeof(uint64_t)); for(i = 0; i < s->l1_size; i++) { l1_table[i] = cpu_to_be64(s->l1_table[i]); } @@ -350,7 +344,9 @@ int qcow2_snapshot_create(BlockDriverState *bs, QEMUSnapshotInfo *sn_info) } #endif return 0; - fail: + +fail: + g_free(sn->id_str); g_free(sn->name); g_free(l1_table); return -1; |