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authorEric Blake <eblake@redhat.com>2020-11-12 19:13:37 -0600
committerMarkus Armbruster <armbru@redhat.com>2020-12-19 10:20:14 +0100
commit54aa3de72ea2aaa2e903e7e879a4f3dda515a00e (patch)
tree5f1041c336d7a5064f338179022901ab56d8b5d1 /qga/commands-posix.c
parenteaedde5255842e8add96bec127567e2a8b3be9a8 (diff)
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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>
Diffstat (limited to 'qga/commands-posix.c')
-rw-r--r--qga/commands-posix.c47
1 files changed, 11 insertions, 36 deletions
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 @@ static void build_guest_fsinfo_for_real_device(char const *syspath,
{
GuestDiskAddress *disk;
GuestPCIAddress *pciaddr;
- GuestDiskAddressList *list = NULL;
bool has_hwinf;
#ifdef CONFIG_LIBUDEV
struct udev *udev = NULL;
@@ -1053,9 +1052,6 @@ static void build_guest_fsinfo_for_real_device(char const *syspath,
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 @@ static void build_guest_fsinfo_for_real_device(char const *syspath,
}
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 @@ static void get_disk_deps(const char *disk_dir, GuestDiskInfo *disk)
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 @@ static void get_disk_deps(const char *disk_dir, GuestDiskInfo *disk)
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 @@ static GuestDiskInfoList *get_disk_partitions(
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 @@ static GuestDiskInfoList *get_disk_partitions(
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;
-
- item = g_new0(GuestDiskInfoList, 1);
- item->value = partition;
- item->next = ret;
- ret = item;
+ QAPI_LIST_PREPEND(partition->dependencies, g_strdup(disk_dev));
+ QAPI_LIST_PREPEND(ret, partition);
}
closedir(dp_disk);
@@ -1369,7 +1354,7 @@ static GuestDiskInfoList *get_disk_partitions(
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 @@ GuestDiskInfoList *qmp_guest_get_disks(Error **errp)
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 @@ GuestFilesystemInfoList *qmp_guest_get_fsinfo(Error **errp)
{
FsMountList mounts;
struct FsMount *mount;
- GuestFilesystemInfoList *new, *ret = NULL;
+ GuestFilesystemInfoList *ret = NULL;
Error *local_err = NULL;
QTAILQ_INIT(&mounts);
@@ -1508,10 +1490,7 @@ GuestFilesystemInfoList *qmp_guest_get_fsinfo(Error **errp)
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 @@ GuestFilesystemTrimResponse *
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 @@ qmp_guest_fstrim(bool has_minimum, int64_t minimum, Error **errp)
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) {