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vcpu: teach getVcpusFlags about current

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Now that virDomainSetVcpusFlags knows about VIR_DOMAIN_AFFECT_CURRENT,
so should virDomainGetVcpusFlags.

Unfortunately, the virsh counterpart 'virsh vcpucount' has already
commandeered --current for a different meaning, so teaching virsh
to expose this in the next patch will require a bit of care.

* src/libvirt.c (virDomainGetVcpusFlags): Allow
VIR_DOMAIN_AFFECT_CURRENT.
* src/libxl/libxl_driver.c (libxlDomainGetVcpusFlags): Likewise.
* src/qemu/qemu_driver.c (qemudDomainGetVcpusFlags): Likewise.
* src/test/test_driver.c (testDomainGetVcpusFlags): Likewise.
* src/xen/xen_driver.c (xenUnifiedDomainGetVcpusFlags): Likewise.
This commit is contained in:
Eric Blake 2011-07-15 17:35:47 -06:00
parent 6f1bfd6de5
commit 59d042871c
5 changed files with 74 additions and 37 deletions
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15
src/libvirt.c
View File

@ -7373,10 +7373,13 @@ error:
* not support it. This function requires privileged access to the
* hypervisor.
*
* @flags must include either VIR_DOMAIN_AFFECT_LIVE to query a
* running domain (which will fail if domain is not active), or
* VIR_DOMAIN_AFFECT_CONFIG to query the XML description of the
* domain. It is an error to set both flags.
* If @flags includes VIR_DOMAIN_AFFECT_LIVE, this will query a
* running domain (which will fail if domain is not active); if
* it includes VIR_DOMAIN_AFFECT_CONFIG, this will query the XML
* description of the domain. It is an error to set both flags.
* If neither flag is set (that is, VIR_DOMAIN_AFFECT_CURRENT),
* then the configuration queried depends on whether the domain
* is currently running.
*
* If @flags includes VIR_DOMAIN_VCPU_MAXIMUM, then the maximum
* virtual CPU limit is queried. Otherwise, this call queries the
@ -7400,8 +7403,8 @@ virDomainGetVcpusFlags(virDomainPtr domain, unsigned int flags)
return -1;
}
/* Exactly one of these two flags should be set. */
if (!(flags & VIR_DOMAIN_AFFECT_LIVE) == !(flags & VIR_DOMAIN_AFFECT_CONFIG)) {
/* At most one of these two flags should be set. */
if ((flags & VIR_DOMAIN_AFFECT_LIVE) && (flags & VIR_DOMAIN_AFFECT_CONFIG)) {
virLibDomainError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}

29
src/libxl/libxl_driver.c
View File

@ -2364,18 +2364,12 @@ libxlDomainGetVcpusFlags(virDomainPtr dom, unsigned int flags)
virDomainObjPtr vm;
virDomainDefPtr def;
int ret = -1;
bool active;
virCheckFlags(VIR_DOMAIN_VCPU_LIVE |
VIR_DOMAIN_VCPU_CONFIG |
VIR_DOMAIN_VCPU_MAXIMUM, -1);
/* Exactly one of LIVE or CONFIG must be set. */
if (!(flags & VIR_DOMAIN_VCPU_LIVE) == !(flags & VIR_DOMAIN_VCPU_CONFIG)) {
libxlError(VIR_ERR_INVALID_ARG,
_("invalid flag combination: (0x%x)"), flags);
return -1;
}
libxlDriverLock(driver);
vm = virDomainFindByUUID(&driver->domains, dom->uuid);
libxlDriverUnlock(driver);
@ -2385,14 +2379,33 @@ libxlDomainGetVcpusFlags(virDomainPtr dom, unsigned int flags)
goto cleanup;
}
active = virDomainObjIsActive(vm);
if ((flags & (VIR_DOMAIN_VCPU_LIVE | VIR_DOMAIN_VCPU_CONFIG)) == 0) {
if (active)
flags |= VIR_DOMAIN_VCPU_LIVE;
else
flags |= VIR_DOMAIN_VCPU_CONFIG;
}
if ((flags & VIR_DOMAIN_VCPU_LIVE) && (flags & VIR_DOMAIN_VCPU_CONFIG)) {
libxlError(VIR_ERR_INVALID_ARG,
_("invalid flag combination: (0x%x)"), flags);
return -1;
}
if (flags & VIR_DOMAIN_VCPU_LIVE) {
if (!virDomainObjIsActive(vm)) {
if (!active) {
libxlError(VIR_ERR_OPERATION_INVALID,
"%s", _("Domain is not running"));
goto cleanup;
}
def = vm->def;
} else {
if (!vm->persistent) {
libxlError(VIR_ERR_OPERATION_INVALID,
"%s", _("domain is transient"));
goto cleanup;
}
def = vm->newDef ? vm->newDef : vm->def;
}

29
src/qemu/qemu_driver.c
View File

@ -3543,18 +3543,12 @@ qemudDomainGetVcpusFlags(virDomainPtr dom, unsigned int flags)
virDomainObjPtr vm;
virDomainDefPtr def;
int ret = -1;
bool active;
virCheckFlags(VIR_DOMAIN_AFFECT_LIVE |
VIR_DOMAIN_AFFECT_CONFIG |
VIR_DOMAIN_VCPU_MAXIMUM, -1);
/* Exactly one of LIVE or CONFIG must be set. */
if (!(flags & VIR_DOMAIN_AFFECT_LIVE) == !(flags & VIR_DOMAIN_AFFECT_CONFIG)) {
qemuReportError(VIR_ERR_INVALID_ARG,
_("invalid flag combination: (0x%x)"), flags);
return -1;
}
qemuDriverLock(driver);
vm = virDomainFindByUUID(&driver->domains, dom->uuid);
qemuDriverUnlock(driver);
@ -3567,14 +3561,33 @@ qemudDomainGetVcpusFlags(virDomainPtr dom, unsigned int flags)
goto cleanup;
}
active = virDomainObjIsActive(vm);
if ((flags & (VIR_DOMAIN_VCPU_LIVE | VIR_DOMAIN_VCPU_CONFIG)) == 0) {
if (active)
flags |= VIR_DOMAIN_VCPU_LIVE;
else
flags |= VIR_DOMAIN_VCPU_CONFIG;
}
if ((flags & VIR_DOMAIN_AFFECT_LIVE) && (flags & VIR_DOMAIN_AFFECT_CONFIG)) {
qemuReportError(VIR_ERR_INVALID_ARG,
_("invalid flag combination: (0x%x)"), flags);
return -1;
}
if (flags & VIR_DOMAIN_AFFECT_LIVE) {
if (!virDomainObjIsActive(vm)) {
if (!active) {
qemuReportError(VIR_ERR_OPERATION_INVALID, "%s",
_("domain not active"));
goto cleanup;
}
def = vm->def;
} else {
if (!vm->persistent) {
qemuReportError(VIR_ERR_OPERATION_INVALID, "%s",
_("domain is transient"));
goto cleanup;
}
def = vm->newDef ? vm->newDef : vm->def;
}

31
src/test/test_driver.c
View File

@ -2099,18 +2099,12 @@ testDomainGetVcpusFlags(virDomainPtr domain, unsigned int flags)
virDomainObjPtr vm;
virDomainDefPtr def;
int ret = -1;
bool active;
virCheckFlags(VIR_DOMAIN_AFFECT_LIVE |
VIR_DOMAIN_AFFECT_CONFIG |
VIR_DOMAIN_VCPU_MAXIMUM, -1);
/* Exactly one of LIVE or CONFIG must be set. */
if (!(flags & VIR_DOMAIN_AFFECT_LIVE) == !(flags & VIR_DOMAIN_AFFECT_CONFIG)) {
testError(VIR_ERR_INVALID_ARG,
_("invalid flag combination: (0x%x)"), flags);
return -1;
}
testDriverLock(privconn);
vm = virDomainFindByUUID(&privconn->domains, domain->uuid);
testDriverUnlock(privconn);
@ -2123,14 +2117,35 @@ testDomainGetVcpusFlags(virDomainPtr domain, unsigned int flags)
goto cleanup;
}
active = virDomainObjIsActive(vm);
if ((flags & (VIR_DOMAIN_VCPU_LIVE | VIR_DOMAIN_VCPU_CONFIG)) == 0) {
if (active)
flags |= VIR_DOMAIN_VCPU_LIVE;
else
flags |= VIR_DOMAIN_VCPU_CONFIG;
}
if ((flags & VIR_DOMAIN_AFFECT_LIVE) && (flags & VIR_DOMAIN_AFFECT_CONFIG)) {
testError(VIR_ERR_INVALID_ARG,
_("invalid flag combination: (0x%x)"), flags);
return -1;
}
if (flags & VIR_DOMAIN_AFFECT_LIVE) {
if (!virDomainObjIsActive(vm)) {
if (!active) {
testError(VIR_ERR_OPERATION_INVALID, "%s",
_("domain not active"));
goto cleanup;
}
def = vm->def;
} else {
if (!vm->persistent) {
testError(VIR_ERR_OPERATION_INVALID, "%s",
_("domain is transient"));
goto cleanup;
}
def = vm->newDef ? vm->newDef : vm->def;
}

7
src/xen/xen_driver.c
View File

@ -1239,13 +1239,6 @@ xenUnifiedDomainGetVcpusFlags (virDomainPtr dom, unsigned int flags)
VIR_DOMAIN_VCPU_CONFIG |
VIR_DOMAIN_VCPU_MAXIMUM, -1);
/* Exactly one of LIVE or CONFIG must be set. */
if (!(flags & VIR_DOMAIN_VCPU_LIVE) == !(flags & VIR_DOMAIN_VCPU_CONFIG)) {
xenUnifiedError(VIR_ERR_INVALID_ARG,
_("invalid flag combination: (0x%x)"), flags);
return -1;
}
if (priv->opened[XEN_UNIFIED_XEND_OFFSET]) {
ret = xenDaemonDomainGetVcpusFlags(dom, flags);
if (ret != -2)