[libvirt] [PATCH 1/3] setvcpus: extend virDomainSetVcpusFlags API to support current flag

This patch extends virDomainSetVcpusFlags API to support VIR_DOMAIN_AFFECT_CURRENT flag. Now because most APIs accept VIR_DOMAIN_AFFECT_CURRENT flags, virDomainSetVcpusFlags API should also do. Signed-off-by: Taku Izumi <izumi.taku(a)jp.fujitsu.com&gt; --- include/libvirt/libvirt.h.in | 4 ++-- src/libvirt.c | 10 +++++++--- 2 files changed, 9 insertions(+), 5 deletions(-) Index: libvirt/src/libvirt.c =================================================================== --- libvirt.orig/src/libvirt.c +++ libvirt/src/libvirt.c @@ -6863,10 +6863,14 @@ error: * does not support it or if growing the number is arbitrary limited. * This function requires privileged access to the hypervisor. * - * @flags must include VIR_DOMAIN_AFFECT_LIVE to affect a running + * @flags may include VIR_DOMAIN_AFFECT_LIVE to affect a running * domain (which may fail if domain is not active), or * VIR_DOMAIN_AFFECT_CONFIG to affect the next boot via the XML * description of the domain. Both flags may be set. + * If neither flag is specified (that is, @flags is VIR_DOMAIN_AFFECT_CURRENT), + * then an inactive domain modifies persistent setup, while an active domain + * is hypervisor-dependent on whether just live or both live and persistent + * state is changed. * * If @flags includes VIR_DOMAIN_VCPU_MAXIMUM, then * VIR_DOMAIN_AFFECT_LIVE must be clear, and only the maximum virtual @@ -6874,6 +6878,7 @@ error: * equal to virConnectGetMaxVcpus(). Otherwise, this call affects the * current virtual CPU limit, which must be less than or equal to the * maximum limit. + * Not all hypervisors can support all flag combinations. * * Returns 0 in case of success, -1 in case of failure. */ @@ -6899,8 +6904,7 @@ virDomainSetVcpusFlags(virDomainPtr doma } /* Perform some argument validation common to all implementations. */ - if (nvcpus < 1 || (unsigned short) nvcpus != nvcpus || - (flags & (VIR_DOMAIN_AFFECT_LIVE | VIR_DOMAIN_AFFECT_CONFIG)) == 0) { + if (nvcpus < 1 || (unsigned short) nvcpus != nvcpus) { virLibDomainError(VIR_ERR_INVALID_ARG, __FUNCTION__); goto error; } Index: libvirt/include/libvirt/libvirt.h.in =================================================================== --- libvirt.orig/include/libvirt/libvirt.h.in +++ libvirt/include/libvirt/libvirt.h.in @@ -1234,8 +1234,8 @@ typedef virVcpuInfo *virVcpuInfoPtr; /* Flags for controlling virtual CPU hot-plugging. */ typedef enum { - /* Must choose at least one of these two bits; SetVcpus can choose both; - see virDomainModificationImpact for details. */ + /* See virDomainModificationImpact for these flags. */ + VIR_DOMAIN_VCPU_CURRENT = VIR_DOMAIN_AFFECT_CURRENT, VIR_DOMAIN_VCPU_LIVE = VIR_DOMAIN_AFFECT_LIVE, VIR_DOMAIN_VCPU_CONFIG = VIR_DOMAIN_AFFECT_CONFIG,