Merge remote-tracking branch 'remotes/armbru/tags/pull-qapi-2021-01-28' into staging

QAPI patches patches for 2021-01-28

# gpg: Signature made Thu 28 Jan 2021 07:10:21 GMT
# gpg:                using RSA key 354BC8B3D7EB2A6B68674E5F3870B400EB918653
# gpg:                issuer "armbru@redhat.com"
# gpg: Good signature from "Markus Armbruster <armbru@redhat.com>" [full]
# gpg:                 aka "Markus Armbruster <armbru@pond.sub.org>" [full]
# Primary key fingerprint: 354B C8B3 D7EB 2A6B 6867  4E5F 3870 B400 EB91 8653

* remotes/armbru/tags/pull-qapi-2021-01-28:
  qapi: More complex uses of QAPI_LIST_APPEND
  qapi: Use QAPI_LIST_APPEND in trivial cases
  qapi: Introduce QAPI_LIST_APPEND
  qapi: A couple more QAPI_LIST_PREPEND() stragglers
  net: Clarify early exit condition

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

6 files changed, 22 insertions, 67 deletions

diff --git a/block/dirty-bitmap.c b/block/dirty-bitmap.c
index c01319b..9b9cd71 100644
--- a/block/dirty-bitmap.c
+++ b/block/dirty-bitmap.c
@@ -572,12 +572,12 @@ BlockDirtyInfoList *bdrv_query_dirty_bitmaps(BlockDriverState *bs)
 {
     BdrvDirtyBitmap *bm;
     BlockDirtyInfoList *list = NULL;
-    BlockDirtyInfoList **plist = &list;
+    BlockDirtyInfoList **tail = &list;
 
     bdrv_dirty_bitmaps_lock(bs);
     QLIST_FOREACH(bm, &bs->dirty_bitmaps, list) {
         BlockDirtyInfo *info = g_new0(BlockDirtyInfo, 1);
-        BlockDirtyInfoList *entry = g_new0(BlockDirtyInfoList, 1);
+
         info->count = bdrv_get_dirty_count(bm);
         info->granularity = bdrv_dirty_bitmap_granularity(bm);
         info->has_name = !!bm->name;
@@ -588,9 +588,7 @@ BlockDirtyInfoList *bdrv_query_dirty_bitmaps(BlockDriverState *bs)
         info->persistent = bm->persistent;
         info->has_inconsistent = bm->inconsistent;
         info->inconsistent = bm->inconsistent;
-        entry->value = info;
-        *plist = entry;
-        plist = &entry->next;
+        QAPI_LIST_APPEND(tail, info);
     }
     bdrv_dirty_bitmaps_unlock(bs);
 
diff --git a/block/export/export.c b/block/export/export.c
index b716c15..fec7d9f 100644
--- a/block/export/export.c
+++ b/block/export/export.c
@@ -342,11 +342,10 @@ void qmp_block_export_del(const char *id,
 
 BlockExportInfoList *qmp_query_block_exports(Error **errp)
 {
-    BlockExportInfoList *head = NULL, **p_next = &head;
+    BlockExportInfoList *head = NULL, **tail = &head;
     BlockExport *exp;
 
     QLIST_FOREACH(exp, &block_exports, next) {
-        BlockExportInfoList *entry = g_new0(BlockExportInfoList, 1);
         BlockExportInfo *info = g_new(BlockExportInfo, 1);
         *info = (BlockExportInfo) {
             .id             = g_strdup(exp->id),
@@ -355,9 +354,7 @@ BlockExportInfoList *qmp_query_block_exports(Error **errp)
             .shutting_down  = !exp->user_owned,
         };
 
-        entry->value = info;
-        *p_next = entry;
-        p_next = &entry->next;
+        QAPI_LIST_APPEND(tail, info);
     }
 
     return head;
diff --git a/block/gluster.c b/block/gluster.c
index 1f8699b..e8ee14c 100644
--- a/block/gluster.c
+++ b/block/gluster.c
@@ -514,7 +514,7 @@ static int qemu_gluster_parse_json(BlockdevOptionsGluster *gconf,
 {
     QemuOpts *opts;
     SocketAddress *gsconf = NULL;
-    SocketAddressList *curr = NULL;
+    SocketAddressList **tail;
     QDict *backing_options = NULL;
     Error *local_err = NULL;
     char *str = NULL;
@@ -547,6 +547,7 @@ static int qemu_gluster_parse_json(BlockdevOptionsGluster *gconf,
     }
     gconf->path = g_strdup(ptr);
     qemu_opts_del(opts);
+    tail = &gconf->server;
 
     for (i = 0; i < num_servers; i++) {
         str = g_strdup_printf(GLUSTER_OPT_SERVER_PATTERN"%d.", i);
@@ -655,15 +656,7 @@ static int qemu_gluster_parse_json(BlockdevOptionsGluster *gconf,
             qemu_opts_del(opts);
         }
 
-        if (gconf->server == NULL) {
-            gconf->server = g_new0(SocketAddressList, 1);
-            gconf->server->value = gsconf;
-            curr = gconf->server;
-        } else {
-            curr->next = g_new0(SocketAddressList, 1);
-            curr->next->value = gsconf;
-            curr = curr->next;
-        }
+        QAPI_LIST_APPEND(tail, gsconf);
         gsconf = NULL;
 
         qobject_unref(backing_options);
diff --git a/block/qapi.c b/block/qapi.c
index 0ca206f..0a96099 100644
--- a/block/qapi.c
+++ b/block/qapi.c
@@ -198,7 +198,7 @@ int bdrv_query_snapshot_info_list(BlockDriverState *bs,
 {
     int i, sn_count;
     QEMUSnapshotInfo *sn_tab = NULL;
-    SnapshotInfoList *info_list, *cur_item = NULL, *head = NULL;
+    SnapshotInfoList *head = NULL, **tail = &head;
     SnapshotInfo *info;
 
     sn_count = bdrv_snapshot_list(bs, &sn_tab);
@@ -233,17 +233,7 @@ int bdrv_query_snapshot_info_list(BlockDriverState *bs,
         info->icount        = sn_tab[i].icount;
         info->has_icount    = sn_tab[i].icount != -1ULL;
 
-        info_list = g_new0(SnapshotInfoList, 1);
-        info_list->value = info;
-
-        /* XXX: waiting for the qapi to support qemu-queue.h types */
-        if (!cur_item) {
-            head = cur_item = info_list;
-        } else {
-            cur_item->next = info_list;
-            cur_item = info_list;
-        }
-
+        QAPI_LIST_APPEND(tail, info);
     }
 
     g_free(sn_tab);
@@ -418,17 +408,12 @@ static uint64List *uint64_list(uint64_t *list, int size)
 {
     int i;
     uint64List *out_list = NULL;
-    uint64List **pout_list = &out_list;
+    uint64List **tail = &out_list;
 
     for (i = 0; i < size; i++) {
-        uint64List *entry = g_new(uint64List, 1);
-        entry->value = list[i];
-        *pout_list = entry;
-        pout_list = &entry->next;
+        QAPI_LIST_APPEND(tail, list[i]);
     }
 
-    *pout_list = NULL;
-
     return out_list;
 }
 
@@ -636,26 +621,21 @@ BlockStatsList *qmp_query_blockstats(bool has_query_nodes,
                                      bool query_nodes,
                                      Error **errp)
 {
-    BlockStatsList *head = NULL, **p_next = &head;
+    BlockStatsList *head = NULL, **tail = &head;
     BlockBackend *blk;
     BlockDriverState *bs;
 
     /* Just to be safe if query_nodes is not always initialized */
     if (has_query_nodes && query_nodes) {
         for (bs = bdrv_next_node(NULL); bs; bs = bdrv_next_node(bs)) {
-            BlockStatsList *info = g_malloc0(sizeof(*info));
             AioContext *ctx = bdrv_get_aio_context(bs);
 
             aio_context_acquire(ctx);
-            info->value = bdrv_query_bds_stats(bs, false);
+            QAPI_LIST_APPEND(tail, bdrv_query_bds_stats(bs, false));
             aio_context_release(ctx);
-
-            *p_next = info;
-            p_next = &info->next;
         }
     } else {
         for (blk = blk_all_next(NULL); blk; blk = blk_all_next(blk)) {
-            BlockStatsList *info;
             AioContext *ctx = blk_get_aio_context(blk);
             BlockStats *s;
             char *qdev;
@@ -680,10 +660,7 @@ BlockStatsList *qmp_query_blockstats(bool has_query_nodes,
             bdrv_query_blk_stats(s->stats, blk);
             aio_context_release(ctx);
 
-            info = g_malloc0(sizeof(*info));
-            info->value = s;
-            *p_next = info;
-            p_next = &info->next;
+            QAPI_LIST_APPEND(tail, s);
         }
     }
 
diff --git a/block/qcow2-bitmap.c b/block/qcow2-bitmap.c
index d7a31a8..5eef82f 100644
--- a/block/qcow2-bitmap.c
+++ b/block/qcow2-bitmap.c
@@ -1061,7 +1061,7 @@ fail:
 static Qcow2BitmapInfoFlagsList *get_bitmap_info_flags(uint32_t flags)
 {
     Qcow2BitmapInfoFlagsList *list = NULL;
-    Qcow2BitmapInfoFlagsList **plist = &list;
+    Qcow2BitmapInfoFlagsList **tail = &list;
     int i;
 
     static const struct {
@@ -1076,11 +1076,7 @@ static Qcow2BitmapInfoFlagsList *get_bitmap_info_flags(uint32_t flags)
 
     for (i = 0; i < map_size; ++i) {
         if (flags & map[i].bme) {
-            Qcow2BitmapInfoFlagsList *entry =
-                g_new0(Qcow2BitmapInfoFlagsList, 1);
-            entry->value = map[i].info;
-            *plist = entry;
-            plist = &entry->next;
+            QAPI_LIST_APPEND(tail, map[i].info);
             flags &= ~map[i].bme;
         }
     }
@@ -1105,7 +1101,7 @@ Qcow2BitmapInfoList *qcow2_get_bitmap_info_list(BlockDriverState *bs,
     Qcow2BitmapList *bm_list;
     Qcow2Bitmap *bm;
     Qcow2BitmapInfoList *list = NULL;
-    Qcow2BitmapInfoList **plist = &list;
+    Qcow2BitmapInfoList **tail = &list;
 
     if (s->nb_bitmaps == 0) {
         return NULL;
@@ -1119,13 +1115,10 @@ Qcow2BitmapInfoList *qcow2_get_bitmap_info_list(BlockDriverState *bs,
 
     QSIMPLEQ_FOREACH(bm, bm_list, entry) {
         Qcow2BitmapInfo *info = g_new0(Qcow2BitmapInfo, 1);
-        Qcow2BitmapInfoList *obj = g_new0(Qcow2BitmapInfoList, 1);
         info->granularity = 1U << bm->granularity_bits;
         info->name = g_strdup(bm->name);
         info->flags = get_bitmap_info_flags(bm->flags & ~BME_RESERVED_FLAGS);
-        obj->value = info;
-        *plist = obj;
-        plist = &obj->next;
+        QAPI_LIST_APPEND(tail, info);
     }
 
     bitmap_list_free(bm_list);
diff --git a/block/vmdk.c b/block/vmdk.c
index a00dc00..4499f13 100644
--- a/block/vmdk.c
+++ b/block/vmdk.c
@@ -2928,7 +2928,7 @@ static ImageInfoSpecific *vmdk_get_specific_info(BlockDriverState *bs,
     int i;
     BDRVVmdkState *s = bs->opaque;
     ImageInfoSpecific *spec_info = g_new0(ImageInfoSpecific, 1);
-    ImageInfoList **next;
+    ImageInfoList **tail;
 
     *spec_info = (ImageInfoSpecific){
         .type = IMAGE_INFO_SPECIFIC_KIND_VMDK,
@@ -2943,12 +2943,9 @@ static ImageInfoSpecific *vmdk_get_specific_info(BlockDriverState *bs,
         .parent_cid = s->parent_cid,
     };
 
-    next = &spec_info->u.vmdk.data->extents;
+    tail = &spec_info->u.vmdk.data->extents;
     for (i = 0; i < s->num_extents; i++) {
-        *next = g_new0(ImageInfoList, 1);
-        (*next)->value = vmdk_get_extent_info(&s->extents[i]);
-        (*next)->next = NULL;
-        next = &(*next)->next;
+        QAPI_LIST_APPEND(tail, vmdk_get_extent_info(&s->extents[i]));
     }
 
     return spec_info;