[PATCH 011/103] qemu: command: Format netdev as JSON when QEMU_CAPS_NETDEV_JSON is present
Peter Krempa
pkrempa at redhat.com
Thu Oct 7 15:16:59 UTC 2021
Base the JSON output on a regular capability flag rather than purely
internal flag. This will prepare for the time when QEMU will accept JSON
argumets for -netdev.
For now the capability is not set (thus we for now don't have QMP
schema validation) but that will be addressed later.
To achieve this 'qemuBuildNetdevCommandlineFromJSON' is introduced
and all callers of 'virQEMUBuildNetdevCommandlineFromJSON' are
refactored to use the new helper.
Signed-off-by: Peter Krempa <pkrempa at redhat.com>
---
src/libvirt_private.syms | 1 +
src/qemu/qemu_command.c | 55 ++++++++++++++++++++++++++--------------
src/util/virqemu.c | 2 +-
src/util/virqemu.h | 4 +++
4 files changed, 42 insertions(+), 20 deletions(-)
diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms
index fd0eea0777..a58f2e4552 100644
--- a/src/libvirt_private.syms
+++ b/src/libvirt_private.syms
@@ -3118,6 +3118,7 @@ virQEMUBuildBufferEscapeComma;
virQEMUBuildCommandLineJSON;
virQEMUBuildCommandLineJSONArrayBitmap;
virQEMUBuildCommandLineJSONArrayNumbered;
+virQEMUBuildCommandLineJSONArrayObjectsStr;
virQEMUBuildDriveCommandlineFromJSON;
virQEMUBuildNetdevCommandlineFromJSON;
diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
index f82768d5b1..3c5aa94f11 100644
--- a/src/qemu/qemu_command.c
+++ b/src/qemu/qemu_command.c
@@ -183,6 +183,34 @@ qemuBuildObjectCommandlineFromJSON(virCommand *cmd,
}
+static int
+qemuBuildNetdevCommandlineFromJSON(virCommand *cmd,
+ virJSONValue *props,
+ virQEMUCaps *qemuCaps)
+{
+ g_autofree char *arg = NULL;
+
+ if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_NETDEV_JSON)) {
+ if (!(arg = virJSONValueToString(props, false)))
+ return -1;
+ } else {
+ const char *type = virJSONValueObjectGetString(props, "type");
+ g_auto(virBuffer) buf = VIR_BUFFER_INITIALIZER;
+
+ virBufferAsprintf(&buf, "%s,", type);
+
+ if (virQEMUBuildCommandLineJSON(props, &buf, "type",
+ virQEMUBuildCommandLineJSONArrayObjectsStr) < 0)
+ return -1;
+
+ arg = virBufferContentAndReset(&buf);
+ }
+
+ virCommandAddArgList(cmd, "-netdev", arg, NULL);
+ return 0;
+}
+
+
/**
* qemuBuildMasterKeyCommandLine:
* @cmd: the command to modify
@@ -8383,13 +8411,11 @@ qemuBuildInterfaceCommandLine(virQEMUDriver *driver,
virNetDevVPortProfileOp vmop,
bool standalone,
size_t *nnicindexes,
- int **nicindexes,
- unsigned int flags)
+ int **nicindexes)
{
virDomainDef *def = vm->def;
int ret = -1;
g_autofree char *nic = NULL;
- g_autofree char *host = NULL;
g_autofree char *chardev = NULL;
int *tapfd = NULL;
size_t tapfdSize = 0;
@@ -8643,12 +8669,9 @@ qemuBuildInterfaceCommandLine(virQEMUDriver *driver,
slirpfdName, vdpafdName)))
goto cleanup;
- if (!(host = virQEMUBuildNetdevCommandlineFromJSON(hostnetprops,
- (flags & QEMU_BUILD_COMMANDLINE_VALIDATE_KEEP_JSON))))
+ if (qemuBuildNetdevCommandlineFromJSON(cmd, hostnetprops, qemuCaps) < 0)
goto cleanup;
- virCommandAddArgList(cmd, "-netdev", host, NULL);
-
/* Possible combinations:
*
* Old way: -netdev type=tap,id=netdev1 \
@@ -8721,8 +8744,7 @@ qemuBuildNetCommandLine(virQEMUDriver *driver,
bool standalone,
size_t *nnicindexes,
int **nicindexes,
- unsigned int *bootHostdevNet,
- unsigned int flags)
+ unsigned int *bootHostdevNet)
{
size_t i;
int last_good_net = -1;
@@ -8746,7 +8768,7 @@ qemuBuildNetCommandLine(virQEMUDriver *driver,
if (qemuBuildInterfaceCommandLine(driver, vm, logManager, secManager, cmd, net,
qemuCaps, bootNet, vmop,
standalone, nnicindexes,
- nicindexes, flags) < 0)
+ nicindexes) < 0)
goto error;
last_good_net = i;
@@ -9270,8 +9292,7 @@ qemuBuildChannelsCommandLine(virLogManager *logManager,
virQEMUDriverConfig *cfg,
const virDomainDef *def,
virQEMUCaps *qemuCaps,
- bool chardevStdioLogd,
- unsigned int flags)
+ bool chardevStdioLogd)
{
size_t i;
unsigned int cdevflags = QEMU_BUILD_CHARDEV_TCP_NOWAIT |
@@ -9283,7 +9304,6 @@ qemuBuildChannelsCommandLine(virLogManager *logManager,
virDomainChrDef *channel = def->channels[i];
g_autofree char *chardevstr = NULL;
g_autoptr(virJSONValue) netdevprops = NULL;
- g_autofree char *netdevstr = NULL;
if (!(chardevstr = qemuBuildChrChardevStr(logManager, secManager,
cmd, cfg, def,
@@ -9300,11 +9320,8 @@ qemuBuildChannelsCommandLine(virLogManager *logManager,
if (!(netdevprops = qemuBuildChannelGuestfwdNetdevProps(channel)))
return -1;
- if (!(netdevstr = virQEMUBuildNetdevCommandlineFromJSON(netdevprops,
- (flags & QEMU_BUILD_COMMANDLINE_VALIDATE_KEEP_JSON))))
+ if (qemuBuildNetdevCommandlineFromJSON(cmd, netdevprops, qemuCaps) < 0)
return -1;
-
- virCommandAddArgList(cmd, "-netdev", netdevstr, NULL);
break;
case VIR_DOMAIN_CHR_CHANNEL_TARGET_TYPE_VIRTIO:
@@ -10452,7 +10469,7 @@ qemuBuildCommandLine(virQEMUDriver *driver,
if (qemuBuildNetCommandLine(driver, vm, logManager, secManager, cmd,
qemuCaps, vmop, standalone,
- nnicindexes, nicindexes, &bootHostdevNet, flags) < 0)
+ nnicindexes, nicindexes, &bootHostdevNet) < 0)
return NULL;
if (qemuBuildSmartcardCommandLine(logManager, secManager, cmd, cfg, def, qemuCaps,
@@ -10468,7 +10485,7 @@ qemuBuildCommandLine(virQEMUDriver *driver,
return NULL;
if (qemuBuildChannelsCommandLine(logManager, secManager, cmd, cfg, def, qemuCaps,
- chardevStdioLogd, flags) < 0)
+ chardevStdioLogd) < 0)
return NULL;
if (qemuBuildConsoleCommandLine(logManager, secManager, cmd, cfg, def, qemuCaps,
diff --git a/src/util/virqemu.c b/src/util/virqemu.c
index 644a1615dc..ff6e13b963 100644
--- a/src/util/virqemu.c
+++ b/src/util/virqemu.c
@@ -127,7 +127,7 @@ virQEMUBuildCommandLineJSONArrayNumbered(const char *key,
*
* guestfwd=tcp:10.0.2.1:4600-chardev:charchannel0,guestfwd=...
*/
-static int
+int
virQEMUBuildCommandLineJSONArrayObjectsStr(const char *key,
virJSONValue *array,
virBuffer *buf,
diff --git a/src/util/virqemu.h b/src/util/virqemu.h
index 70668faf47..b1fc3c8323 100644
--- a/src/util/virqemu.h
+++ b/src/util/virqemu.h
@@ -30,6 +30,10 @@ typedef int (*virQEMUBuildCommandLineJSONArrayFormatFunc)(const char *key,
virJSONValue *array,
virBuffer *buf,
const char *skipKey);
+int virQEMUBuildCommandLineJSONArrayObjectsStr(const char *key,
+ virJSONValue *array,
+ virBuffer *buf,
+ const char *skipKey);
int virQEMUBuildCommandLineJSONArrayBitmap(const char *key,
virJSONValue *array,
virBuffer *buf,
--
2.31.1
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