[libvirt] [PATCH 1/3] qemu_hotplug.c: use VIR_AUTOFREE() in strings 1/3
Daniel Henrique Barboza
danielhb413 at gmail.com
Wed Sep 18 19:53:06 UTC 2019
Using VIR_AUTOFREE() spare us from calling VIR_VREE() and
sometimes a whole 'cleanup' label can be erased as well.
There are quite a few strings in qemu_hotplug.c to be
auto-freed. This is the first part of this change.
Signed-off-by: Daniel Henrique Barboza <danielhb413 at gmail.com>
---
src/qemu/qemu_hotplug.c | 106 +++++++++++++---------------------------
1 file changed, 33 insertions(+), 73 deletions(-)
diff --git a/src/qemu/qemu_hotplug.c b/src/qemu/qemu_hotplug.c
index 62e505b779..5b1639b48d 100644
--- a/src/qemu/qemu_hotplug.c
+++ b/src/qemu/qemu_hotplug.c
@@ -136,20 +136,15 @@ static int
qemuDomainAttachZPCIDevice(qemuMonitorPtr mon,
virDomainDeviceInfoPtr info)
{
- char *devstr_zpci = NULL;
- int ret = -1;
+ VIR_AUTOFREE(char *) devstr_zpci = NULL;
if (!(devstr_zpci = qemuBuildZPCIDevStr(info)))
- goto cleanup;
+ return -1;
if (qemuMonitorAddDevice(mon, devstr_zpci) < 0)
- goto cleanup;
-
- ret = 0;
+ return -1;
- cleanup:
- VIR_FREE(devstr_zpci);
- return ret;
+ return 0;
}
@@ -157,20 +152,15 @@ static int
qemuDomainDetachZPCIDevice(qemuMonitorPtr mon,
virDomainDeviceInfoPtr info)
{
- char *zpciAlias = NULL;
- int ret = -1;
+ VIR_AUTOFREE(char *) zpciAlias = NULL;
if (virAsprintf(&zpciAlias, "zpci%d", info->addr.pci.zpci.uid) < 0)
- goto cleanup;
+ return -1;
if (qemuMonitorDelDevice(mon, zpciAlias) < 0)
- goto cleanup;
-
- ret = 0;
+ return -1;
- cleanup:
- VIR_FREE(zpciAlias);
- return ret;
+ return 0;
}
@@ -517,7 +507,7 @@ qemuDomainChangeMediaBlockdev(virQEMUDriverPtr driver,
qemuDomainDiskPrivatePtr diskPriv = QEMU_DOMAIN_DISK_PRIVATE(disk);
VIR_AUTOPTR(qemuBlockStorageSourceChainData) newbackend = NULL;
VIR_AUTOPTR(qemuBlockStorageSourceChainData) oldbackend = NULL;
- char *nodename = NULL;
+ VIR_AUTOFREE(char *) nodename = NULL;
int rc;
int ret = -1;
@@ -572,7 +562,6 @@ qemuDomainChangeMediaBlockdev(virQEMUDriverPtr driver,
ret = 0;
cleanup:
- VIR_FREE(nodename);
return ret;
}
@@ -823,7 +812,7 @@ int qemuDomainAttachControllerDevice(virQEMUDriverPtr driver,
{
int ret = -1;
const char* type = virDomainControllerTypeToString(controller->type);
- char *devstr = NULL;
+ VIR_AUTOFREE(char *) devstr = NULL;
qemuDomainObjPrivatePtr priv = vm->privateData;
virDomainDeviceDef dev = { VIR_DOMAIN_DEVICE_CONTROLLER,
{ .controller = controller } };
@@ -890,7 +879,6 @@ int qemuDomainAttachControllerDevice(virQEMUDriverPtr driver,
if (ret != 0 && releaseaddr)
qemuDomainReleaseDeviceAddress(vm, &controller->info);
- VIR_FREE(devstr);
return ret;
}
@@ -1156,8 +1144,8 @@ qemuDomainAttachNetDevice(virQEMUDriverPtr driver,
int *vhostfd = NULL;
size_t vhostfdSize = 0;
size_t queueSize = 0;
- char *nicstr = NULL;
- char *netstr = NULL;
+ VIR_AUTOFREE(char *) nicstr = NULL;
+ VIR_AUTOFREE(char *) netstr = NULL;
int ret = -1;
bool releaseaddr = false;
bool iface_connected = false;
@@ -1166,10 +1154,10 @@ qemuDomainAttachNetDevice(virQEMUDriverPtr driver,
VIR_AUTOUNREF(virQEMUDriverConfigPtr) cfg = virQEMUDriverGetConfig(driver);
virDomainCCWAddressSetPtr ccwaddrs = NULL;
size_t i;
- char *charDevAlias = NULL;
+ VIR_AUTOFREE(char *) charDevAlias = NULL;
bool charDevPlugged = false;
bool netdevPlugged = false;
- char *netdev_name;
+ VIR_AUTOFREE(char *) netdev_name = NULL;
virConnectPtr conn = NULL;
virErrorPtr save_err = NULL;
@@ -1499,8 +1487,6 @@ qemuDomainAttachNetDevice(virQEMUDriverPtr driver,
virErrorRestore(&save_err);
}
- VIR_FREE(nicstr);
- VIR_FREE(netstr);
for (i = 0; tapfd && i < tapfdSize; i++) {
VIR_FORCE_CLOSE(tapfd[i]);
if (tapfdName)
@@ -1515,7 +1501,6 @@ qemuDomainAttachNetDevice(virQEMUDriverPtr driver,
}
VIR_FREE(vhostfd);
VIR_FREE(vhostfdName);
- VIR_FREE(charDevAlias);
virObjectUnref(conn);
virDomainCCWAddressSetFree(ccwaddrs);
VIR_FORCE_CLOSE(slirpfd);
@@ -1539,7 +1524,6 @@ qemuDomainAttachNetDevice(virQEMUDriverPtr driver,
VIR_WARN("Failed to remove network backend for netdev %s",
netdev_name);
ignore_value(qemuDomainObjExitMonitor(driver, vm));
- VIR_FREE(netdev_name);
}
virErrorRestore(&originalError);
goto cleanup;
@@ -1556,7 +1540,7 @@ qemuDomainAttachHostPCIDevice(virQEMUDriverPtr driver,
{ .hostdev = hostdev } };
virDomainDeviceInfoPtr info = hostdev->info;
int ret;
- char *devstr = NULL;
+ VIR_AUTOFREE(char *) devstr = NULL;
bool releaseaddr = false;
bool teardowncgroup = false;
bool teardownlabel = false;
@@ -1658,8 +1642,6 @@ qemuDomainAttachHostPCIDevice(virQEMUDriverPtr driver,
vm->def->hostdevs[vm->def->nhostdevs++] = hostdev;
- VIR_FREE(devstr);
-
return 0;
error:
@@ -1679,8 +1661,6 @@ qemuDomainAttachHostPCIDevice(virQEMUDriverPtr driver,
qemuHostdevReAttachPCIDevices(driver, vm->def->name, &hostdev, 1);
- VIR_FREE(devstr);
-
cleanup:
return -1;
}
@@ -1726,7 +1706,7 @@ qemuDomainAddTLSObjects(virQEMUDriverPtr driver,
{
qemuDomainObjPrivatePtr priv = vm->privateData;
virErrorPtr orig_err;
- char *secAlias = NULL;
+ VIR_AUTOFREE(char *) secAlias = NULL;
if (!tlsProps && !secProps)
return 0;
@@ -1742,8 +1722,6 @@ qemuDomainAddTLSObjects(virQEMUDriverPtr driver,
qemuMonitorAddObject(priv->mon, tlsProps, NULL) < 0)
goto error;
- VIR_FREE(secAlias);
-
return qemuDomainObjExitMonitor(driver, vm);
error:
@@ -1751,7 +1729,6 @@ qemuDomainAddTLSObjects(virQEMUDriverPtr driver,
ignore_value(qemuDomainObjExitMonitor(driver, vm));
virErrorRestore(&orig_err);
qemuDomainDelTLSObjects(driver, vm, asyncJob, secAlias, NULL);
- VIR_FREE(secAlias);
return -1;
}
@@ -1850,20 +1827,18 @@ qemuDomainDelChardevTLSObjects(virQEMUDriverPtr driver,
virDomainChrSourceDefPtr dev,
const char *inAlias)
{
- int ret = -1;
VIR_AUTOUNREF(virQEMUDriverConfigPtr) cfg = virQEMUDriverGetConfig(driver);
qemuDomainObjPrivatePtr priv = vm->privateData;
- char *tlsAlias = NULL;
- char *secAlias = NULL;
+ VIR_AUTOFREE(char *) tlsAlias = NULL;
+ VIR_AUTOFREE(char *) secAlias = NULL;
if (dev->type != VIR_DOMAIN_CHR_TYPE_TCP ||
dev->data.tcp.haveTLS != VIR_TRISTATE_BOOL_YES) {
- ret = 0;
- goto cleanup;
+ return 0;
}
if (!(tlsAlias = qemuAliasTLSObjFromSrcAlias(inAlias)))
- goto cleanup;
+ return -1;
/* Best shot at this as the secinfo is destroyed after process launch
* and this path does not recreate it. Thus, if the config has the
@@ -1871,7 +1846,7 @@ qemuDomainDelChardevTLSObjects(virQEMUDriverPtr driver,
* secAlias which we'll attempt to destroy. */
if (cfg->chardevTLSx509secretUUID &&
!(secAlias = qemuDomainGetSecretAESAlias(inAlias, false)))
- goto cleanup;
+ return -1;
qemuDomainObjEnterMonitor(driver, vm);
@@ -1880,14 +1855,9 @@ qemuDomainDelChardevTLSObjects(virQEMUDriverPtr driver,
ignore_value(qemuMonitorDelObject(priv->mon, secAlias));
if (qemuDomainObjExitMonitor(driver, vm) < 0)
- goto cleanup;
-
- ret = 0;
+ return -1;
- cleanup:
- VIR_FREE(tlsAlias);
- VIR_FREE(secAlias);
- return ret;
+ return 0;
}
@@ -1898,10 +1868,10 @@ int qemuDomainAttachRedirdevDevice(virQEMUDriverPtr driver,
int ret = -1;
qemuDomainObjPrivatePtr priv = vm->privateData;
virDomainDefPtr def = vm->def;
- char *charAlias = NULL;
- char *devstr = NULL;
+ VIR_AUTOFREE(char *) charAlias = NULL;
+ VIR_AUTOFREE(char *) devstr = NULL;
bool chardevAdded = false;
- char *tlsAlias = NULL;
+ VIR_AUTOFREE(char *) tlsAlias = NULL;
const char *secAlias = NULL;
bool need_release = false;
virErrorPtr orig_err;
@@ -1948,9 +1918,6 @@ int qemuDomainAttachRedirdevDevice(virQEMUDriverPtr driver,
cleanup:
if (ret < 0 && need_release)
qemuDomainReleaseDeviceAddress(vm, &redirdev->info);
- VIR_FREE(tlsAlias);
- VIR_FREE(charAlias);
- VIR_FREE(devstr);
return ret;
exit_monitor:
@@ -2134,14 +2101,14 @@ int qemuDomainAttachChrDevice(virQEMUDriverPtr driver,
qemuDomainObjPrivatePtr priv = vm->privateData;
virErrorPtr orig_err;
virDomainDefPtr vmdef = vm->def;
- char *devstr = NULL;
+ VIR_AUTOFREE(char *) devstr = NULL;
virDomainChrSourceDefPtr dev = chr->source;
- char *charAlias = NULL;
+ VIR_AUTOFREE(char *)charAlias = NULL;
bool chardevAttached = false;
bool teardowncgroup = false;
bool teardowndevice = false;
bool teardownlabel = false;
- char *tlsAlias = NULL;
+ VIR_AUTOFREE(char *) tlsAlias = NULL;
const char *secAlias = NULL;
bool need_release = false;
bool guestfwd = false;
@@ -2222,9 +2189,6 @@ int qemuDomainAttachChrDevice(virQEMUDriverPtr driver,
if (teardowndevice && qemuDomainNamespaceTeardownChardev(vm, chr) < 0)
VIR_WARN("Unable to remove chr device from /dev");
}
- VIR_FREE(tlsAlias);
- VIR_FREE(charAlias);
- VIR_FREE(devstr);
return ret;
exit_monitor:
@@ -2249,10 +2213,10 @@ qemuDomainAttachRNGDevice(virQEMUDriverPtr driver,
qemuDomainObjPrivatePtr priv = vm->privateData;
virDomainDeviceDef dev = { VIR_DOMAIN_DEVICE_RNG, { .rng = rng } };
virErrorPtr orig_err;
- char *devstr = NULL;
- char *charAlias = NULL;
- char *objAlias = NULL;
- char *tlsAlias = NULL;
+ VIR_AUTOFREE(char *) devstr = NULL;
+ VIR_AUTOFREE(char *) charAlias = NULL;
+ VIR_AUTOFREE(char *) objAlias = NULL;
+ VIR_AUTOFREE(char *) tlsAlias = NULL;
const char *secAlias = NULL;
bool releaseaddr = false;
bool teardowncgroup = false;
@@ -2338,10 +2302,6 @@ qemuDomainAttachRNGDevice(virQEMUDriverPtr driver,
VIR_WARN("Unable to remove chr device from /dev");
}
- VIR_FREE(tlsAlias);
- VIR_FREE(charAlias);
- VIR_FREE(objAlias);
- VIR_FREE(devstr);
return ret;
exit_monitor:
--
2.21.0
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