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>

1 files changed, 15 insertions, 35 deletions

diff --git a/qga/commands-posix.c b/qga/commands-posix.c
index edf785b2da..8dd94a3314 100644
--- a/qga/commands-posix.c
+++ b/qga/commands-posix.c
@@ -2474,18 +2474,17 @@ static void transfer_vcpu(GuestLogicalProcessor *vcpu, bool sys2vcpu,
 GuestLogicalProcessorList *qmp_guest_get_vcpus(Error **errp)
 {
     int64_t current;
-    GuestLogicalProcessorList *head, **link;
+    GuestLogicalProcessorList *head, **tail;
     long sc_max;
     Error *local_err = NULL;
 
     current = 0;
     head = NULL;
-    link = &head;
+    tail = &head;
     sc_max = SYSCONF_EXACT(_SC_NPROCESSORS_CONF, &local_err);
 
     while (local_err == NULL && current < sc_max) {
         GuestLogicalProcessor *vcpu;
-        GuestLogicalProcessorList *entry;
         int64_t id = current++;
         char *path = g_strdup_printf("/sys/devices/system/cpu/cpu%" PRId64 "/",
                                      id);
@@ -2495,10 +2494,7 @@ GuestLogicalProcessorList *qmp_guest_get_vcpus(Error **errp)
             vcpu->logical_id = id;
             vcpu->has_can_offline = true; /* lolspeak ftw */
             transfer_vcpu(vcpu, true, path, &local_err);
-            entry = g_malloc0(sizeof *entry);
-            entry->value = vcpu;
-            *link = entry;
-            link = &entry->next;
+            QAPI_LIST_APPEND(tail, vcpu);
         }
         g_free(path);
     }
@@ -2831,13 +2827,13 @@ out1:
 
 GuestMemoryBlockList *qmp_guest_get_memory_blocks(Error **errp)
 {
-    GuestMemoryBlockList *head, **link;
+    GuestMemoryBlockList *head, **tail;
     Error *local_err = NULL;
     struct dirent *de;
     DIR *dp;
 
     head = NULL;
-    link = &head;
+    tail = &head;
 
     dp = opendir("/sys/devices/system/memory/");
     if (!dp) {
@@ -2859,7 +2855,6 @@ GuestMemoryBlockList *qmp_guest_get_memory_blocks(Error **errp)
      */
     while ((de = readdir(dp)) != NULL) {
         GuestMemoryBlock *mem_blk;
-        GuestMemoryBlockList *entry;
 
         if ((strncmp(de->d_name, "memory", 6) != 0) ||
             !(de->d_type & DT_DIR)) {
@@ -2875,11 +2870,7 @@ GuestMemoryBlockList *qmp_guest_get_memory_blocks(Error **errp)
             break;
         }
 
-        entry = g_malloc0(sizeof *entry);
-        entry->value = mem_blk;
-
-        *link = entry;
-        link = &entry->next;
+        QAPI_LIST_APPEND(tail, mem_blk);
     }
 
     closedir(dp);
@@ -2899,15 +2890,14 @@ GuestMemoryBlockList *qmp_guest_get_memory_blocks(Error **errp)
 GuestMemoryBlockResponseList *
 qmp_guest_set_memory_blocks(GuestMemoryBlockList *mem_blks, Error **errp)
 {
-    GuestMemoryBlockResponseList *head, **link;
+    GuestMemoryBlockResponseList *head, **tail;
     Error *local_err = NULL;
 
     head = NULL;
-    link = &head;
+    tail = &head;
 
     while (mem_blks != NULL) {
         GuestMemoryBlockResponse *result;
-        GuestMemoryBlockResponseList *entry;
         GuestMemoryBlock *current_mem_blk = mem_blks->value;
 
         result = g_malloc0(sizeof(*result));
@@ -2916,11 +2906,8 @@ qmp_guest_set_memory_blocks(GuestMemoryBlockList *mem_blks, Error **errp)
         if (local_err) { /* should never happen */
             goto err;
         }
-        entry = g_malloc0(sizeof *entry);
-        entry->value = result;
 
-        *link = entry;
-        link = &entry->next;
+        QAPI_LIST_APPEND(tail, result);
         mem_blks = mem_blks->next;
     }
 
@@ -3151,11 +3138,10 @@ static double ga_get_login_time(struct utmpx *user_info)
 GuestUserList *qmp_guest_get_users(Error **errp)
 {
     GHashTable *cache = NULL;
-    GuestUserList *head = NULL, *cur_item = NULL;
+    GuestUserList *head = NULL, **tail = &head;
     struct utmpx *user_info = NULL;
     gpointer value = NULL;
     GuestUser *user = NULL;
-    GuestUserList *item = NULL;
     double login_time = 0;
 
     cache = g_hash_table_new(g_str_hash, g_str_equal);
@@ -3178,19 +3164,13 @@ GuestUserList *qmp_guest_get_users(Error **errp)
             continue;
         }
 
-        item = g_new0(GuestUserList, 1);
-        item->value = g_new0(GuestUser, 1);
-        item->value->user = g_strdup(user_info->ut_user);
-        item->value->login_time = ga_get_login_time(user_info);
+        user = g_new0(GuestUser, 1);
+        user->user = g_strdup(user_info->ut_user);
+        user->login_time = ga_get_login_time(user_info);
 
-        g_hash_table_insert(cache, item->value->user, item->value);
+        g_hash_table_insert(cache, user->user, user);
 
-        if (!cur_item) {
-            head = cur_item = item;
-        } else {
-            cur_item->next = item;
-            cur_item = item;
-        }
+        QAPI_LIST_APPEND(tail, user);
     }
     endutxent();
     g_hash_table_destroy(cache);