qapi: Use QAPI_LIST_PREPEND() where possible
Anywhere we create a list of just one item or by prepending items
(typically because order doesn't matter), we can use
QAPI_LIST_PREPEND(). But places where we must keep the list in order
by appending remain open-coded until later patches.
Note that as a side effect, this also performs a cleanup of two minor
issues in qga/commands-posix.c: the old code was performing
new = g_malloc0(sizeof(*ret));
which 1) is confusing because you have to verify whether 'new' and
'ret' are variables with the same type, and 2) would conflict with C++
compilation (not an actual problem for this file, but makes
copy-and-paste harder).
Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <20201113011340.463563-5-eblake@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
[Straightforward conflicts due to commit a8aa94b5f8 "qga: update
schema for guest-get-disks 'dependents' field" and commit a10b453a52
"target/mips: Move mips_cpu_add_definition() from helper.c to cpu.c"
resolved. Commit message tweaked.]
Signed-off-by: Markus Armbruster <armbru@redhat.com>
diff --git a/qga/commands-posix-ssh.c b/qga/commands-posix-ssh.c
index 749167e..2dda136 100644
--- a/qga/commands-posix-ssh.c
+++ b/qga/commands-posix-ssh.c
@@ -293,17 +293,12 @@
ret = g_new0(GuestAuthorizedKeys, 1);
for (i = 0; authkeys[i] != NULL; i++) {
- strList *new;
-
g_strstrip(authkeys[i]);
if (!authkeys[i][0] || authkeys[i][0] == '#') {
continue;
}
- new = g_new0(strList, 1);
- new->value = g_strdup(authkeys[i]);
- new->next = ret->keys;
- ret->keys = new;
+ QAPI_LIST_PREPEND(ret->keys, g_strdup(authkeys[i]));
}
return g_steal_pointer(&ret);
diff --git a/qga/commands-posix.c b/qga/commands-posix.c
index c089e38..849923b 100644
--- a/qga/commands-posix.c
+++ b/qga/commands-posix.c
@@ -1036,7 +1036,6 @@
{
GuestDiskAddress *disk;
GuestPCIAddress *pciaddr;
- GuestDiskAddressList *list = NULL;
bool has_hwinf;
#ifdef CONFIG_LIBUDEV
struct udev *udev = NULL;
@@ -1053,9 +1052,6 @@
disk->pci_controller = pciaddr;
disk->bus_type = GUEST_DISK_BUS_TYPE_UNKNOWN;
- list = g_new0(GuestDiskAddressList, 1);
- list->value = disk;
-
#ifdef CONFIG_LIBUDEV
udev = udev_new();
udevice = udev_device_new_from_syspath(udev, syspath);
@@ -1089,10 +1085,9 @@
}
if (has_hwinf || disk->has_dev || disk->has_serial) {
- list->next = fs->disk;
- fs->disk = list;
+ QAPI_LIST_PREPEND(fs->disk, disk);
} else {
- qapi_free_GuestDiskAddressList(list);
+ qapi_free_GuestDiskAddress(disk);
}
}
@@ -1288,7 +1283,6 @@
disk->has_dependencies = true;
while ((dep = g_dir_read_name(dp_deps)) != NULL) {
g_autofree char *dep_dir = NULL;
- strList *dep_item = NULL;
char *dev_name;
/* Add dependent disks */
@@ -1296,10 +1290,7 @@
dev_name = get_device_for_syspath(dep_dir);
if (dev_name != NULL) {
g_debug(" adding dependent device: %s", dev_name);
- dep_item = g_new0(strList, 1);
- dep_item->value = dev_name;
- dep_item->next = disk->dependencies;
- disk->dependencies = dep_item;
+ QAPI_LIST_PREPEND(disk->dependencies, dev_name);
}
}
g_dir_close(dp_deps);
@@ -1318,7 +1309,7 @@
const char *disk_name, const char *disk_dir,
const char *disk_dev)
{
- GuestDiskInfoList *item, *ret = list;
+ GuestDiskInfoList *ret = list;
struct dirent *de_disk;
DIR *dp_disk = NULL;
size_t len = strlen(disk_name);
@@ -1352,15 +1343,9 @@
partition->name = dev_name;
partition->partition = true;
/* Add parent disk as dependent for easier tracking of hierarchy */
- partition->dependencies = g_new0(strList, 1);
- partition->dependencies->value = g_strdup(disk_dev);
- partition->has_dependencies = true;
+ QAPI_LIST_PREPEND(partition->dependencies, g_strdup(disk_dev));
- item = g_new0(GuestDiskInfoList, 1);
- item->value = partition;
- item->next = ret;
- ret = item;
-
+ QAPI_LIST_PREPEND(ret, partition);
}
closedir(dp_disk);
@@ -1369,7 +1354,7 @@
GuestDiskInfoList *qmp_guest_get_disks(Error **errp)
{
- GuestDiskInfoList *item, *ret = NULL;
+ GuestDiskInfoList *ret = NULL;
GuestDiskInfo *disk;
DIR *dp = NULL;
struct dirent *de = NULL;
@@ -1415,10 +1400,7 @@
disk->partition = false;
disk->alias = get_alias_for_syspath(disk_dir);
disk->has_alias = (disk->alias != NULL);
- item = g_new0(GuestDiskInfoList, 1);
- item->value = disk;
- item->next = ret;
- ret = item;
+ QAPI_LIST_PREPEND(ret, disk);
/* Get address for non-virtual devices */
bool is_virtual = is_disk_virtual(disk_dir, &local_err);
@@ -1495,7 +1477,7 @@
{
FsMountList mounts;
struct FsMount *mount;
- GuestFilesystemInfoList *new, *ret = NULL;
+ GuestFilesystemInfoList *ret = NULL;
Error *local_err = NULL;
QTAILQ_INIT(&mounts);
@@ -1508,10 +1490,7 @@
QTAILQ_FOREACH(mount, &mounts, next) {
g_debug("Building guest fsinfo for '%s'", mount->dirname);
- new = g_malloc0(sizeof(*ret));
- new->value = build_guest_fsinfo(mount, &local_err);
- new->next = ret;
- ret = new;
+ QAPI_LIST_PREPEND(ret, build_guest_fsinfo(mount, &local_err));
if (local_err) {
error_propagate(errp, local_err);
qapi_free_GuestFilesystemInfoList(ret);
@@ -1777,7 +1756,6 @@
qmp_guest_fstrim(bool has_minimum, int64_t minimum, Error **errp)
{
GuestFilesystemTrimResponse *response;
- GuestFilesystemTrimResultList *list;
GuestFilesystemTrimResult *result;
int ret = 0;
FsMountList mounts;
@@ -1801,10 +1779,7 @@
result = g_malloc0(sizeof(*result));
result->path = g_strdup(mount->dirname);
- list = g_malloc0(sizeof(*list));
- list->value = result;
- list->next = response->paths;
- response->paths = list;
+ QAPI_LIST_PREPEND(response->paths, result);
fd = qemu_open_old(mount->dirname, O_RDONLY);
if (fd == -1) {
diff --git a/qga/commands-win32.c b/qga/commands-win32.c
index ba1fd07..684639b 100644
--- a/qga/commands-win32.c
+++ b/qga/commands-win32.c
@@ -874,7 +874,7 @@
static GuestDiskAddressList *build_guest_disk_info(char *guid, Error **errp)
{
Error *local_err = NULL;
- GuestDiskAddressList *list = NULL, *cur_item = NULL;
+ GuestDiskAddressList *list = NULL;
GuestDiskAddress *disk = NULL;
int i;
HANDLE vol_h;
@@ -926,10 +926,8 @@
error_free(local_err);
goto out;
}
- list = g_malloc0(sizeof(*list));
- list->value = disk;
+ QAPI_LIST_PREPEND(list, disk);
disk = NULL;
- list->next = NULL;
goto out;
} else {
error_setg_win32(errp, GetLastError(),
@@ -960,11 +958,8 @@
error_propagate(errp, local_err);
goto out;
}
- cur_item = g_malloc0(sizeof(*list));
- cur_item->value = disk;
+ QAPI_LIST_PREPEND(list, disk);
disk = NULL;
- cur_item->next = list;
- list = cur_item;
}
@@ -982,7 +977,7 @@
GuestDiskInfoList *qmp_guest_get_disks(Error **errp)
{
ERRP_GUARD();
- GuestDiskInfoList *new = NULL, *ret = NULL;
+ GuestDiskInfoList *ret = NULL;
HDEVINFO dev_info;
SP_DEVICE_INTERFACE_DATA dev_iface_data;
int i;
@@ -1064,10 +1059,7 @@
disk->has_address = true;
}
- new = g_malloc0(sizeof(GuestDiskInfoList));
- new->value = disk;
- new->next = ret;
- ret = new;
+ QAPI_LIST_PREPEND(ret, disk);
}
SetupDiDestroyDeviceInfoList(dev_info);
@@ -1165,7 +1157,7 @@
GuestFilesystemInfoList *qmp_guest_get_fsinfo(Error **errp)
{
HANDLE vol_h;
- GuestFilesystemInfoList *new, *ret = NULL;
+ GuestFilesystemInfoList *ret = NULL;
char guid[256];
vol_h = FindFirstVolume(guid, sizeof(guid));
@@ -1183,10 +1175,7 @@
error_free(local_err);
continue;
}
- new = g_malloc(sizeof(*ret));
- new->value = info;
- new->next = ret;
- ret = new;
+ QAPI_LIST_PREPEND(ret, info);
} while (FindNextVolume(vol_h, guid, sizeof(guid)));
if (GetLastError() != ERROR_NO_MORE_FILES) {
@@ -1330,7 +1319,6 @@
do {
GuestFilesystemTrimResult *res;
- GuestFilesystemTrimResultList *list;
PWCHAR uc_path;
DWORD char_count = 0;
char *path, *out;
@@ -1369,11 +1357,7 @@
res->path = path;
- list = g_new0(GuestFilesystemTrimResultList, 1);
- list->value = res;
- list->next = resp->paths;
-
- resp->paths = list;
+ QAPI_LIST_PREPEND(resp->paths, res);
memset(argv, 0, sizeof(argv));
argv[0] = (gchar *)"defrag.exe";
diff --git a/qga/commands.c b/qga/commands.c
index 3dcd5fb..e866fc7 100644
--- a/qga/commands.c
+++ b/qga/commands.c
@@ -66,17 +66,13 @@
{
GuestAgentInfo *info = opaque;
GuestAgentCommandInfo *cmd_info;
- GuestAgentCommandInfoList *cmd_info_list;
cmd_info = g_new0(GuestAgentCommandInfo, 1);
cmd_info->name = g_strdup(qmp_command_name(cmd));
cmd_info->enabled = qmp_command_is_enabled(cmd);
cmd_info->success_response = qmp_has_success_response(cmd);
- cmd_info_list = g_new0(GuestAgentCommandInfoList, 1);
- cmd_info_list->value = cmd_info;
- cmd_info_list->next = info->supported_commands;
- info->supported_commands = cmd_info_list;
+ QAPI_LIST_PREPEND(info->supported_commands, cmd_info);
}
struct GuestAgentInfo *qmp_guest_info(Error **errp)
