Mailing List Archive

[PATCH v5 3/3] golang/xenlight: implement array Go to C marshaling
Signed-off-by: Nick Rosbrook <rosbrookn@ainfosec.com>
---
Changes in v5:
- Remove dispose_fn from parameter list in xenlight_golang_array_to_C
since it's no longer needed.
- Update call to toC for elements of arrays of structs so that it
matches the new function signature of toC.
- Do not try to marshal zero-length arrays.
---
tools/golang/xenlight/gengotypes.py | 41 +++-
tools/golang/xenlight/helpers.gen.go | 311 +++++++++++++++++++++++++++
2 files changed, 351 insertions(+), 1 deletion(-)

diff --git a/tools/golang/xenlight/gengotypes.py b/tools/golang/xenlight/gengotypes.py
index 8ab6768e61..27edf66241 100644
--- a/tools/golang/xenlight/gengotypes.py
+++ b/tools/golang/xenlight/gengotypes.py
@@ -454,7 +454,7 @@ def xenlight_golang_define_to_C(ty = None, typename = None, nested = False):
for f in ty.fields:
if f.type.typename is not None:
if isinstance(f.type, idl.Array):
- # TODO
+ body += xenlight_golang_array_to_C(f)
continue

body += xenlight_golang_convert_to_C(f)
@@ -580,6 +580,45 @@ def xenlight_golang_union_to_C(ty = None, union_name = '',

return s

+def xenlight_golang_array_to_C(ty = None):
+ s = ''
+
+ gotypename = xenlight_golang_fmt_name(ty.type.elem_type.typename)
+ goname = xenlight_golang_fmt_name(ty.name)
+ ctypename = ty.type.elem_type.typename
+ cname = ty.name
+ clenvar = ty.type.lenvar.name
+ golenvar = xenlight_golang_fmt_name(clenvar,exported=False)
+
+ is_enum = isinstance(ty.type.elem_type,idl.Enumeration)
+ if gotypename in go_builtin_types or is_enum:
+ s += 'if {} := len(x.{}); {} > 0 {{\n'.format(golenvar,goname,golenvar)
+ s += 'xc.{} = (*C.{})(C.malloc(C.size_t({}*{})))\n'.format(cname,ctypename,
+ golenvar,golenvar)
+ s += 'xc.{} = C.int({})\n'.format(clenvar,golenvar)
+ s += 'c{} := (*[1<<28]C.{})(unsafe.Pointer(xc.{}))[:{}:{}]\n'.format(goname,
+ ctypename,cname,
+ golenvar,golenvar)
+ s += 'for i,v := range x.{} {{\n'.format(goname)
+ s += 'c{}[i] = C.{}(v)\n'.format(goname,ctypename)
+ s += '}\n}\n'
+
+ return s
+
+ s += 'if {} := len(x.{}); {} > 0 {{\n'.format(golenvar,goname,golenvar)
+ s += 'xc.{} = (*C.{})(C.malloc(C.ulong({})*C.sizeof_{}))\n'.format(cname,ctypename,
+ golenvar,ctypename)
+ s += 'xc.{} = C.int({})\n'.format(clenvar,golenvar)
+ s += 'c{} := (*[1<<28]C.{})(unsafe.Pointer(xc.{}))[:{}:{}]\n'.format(goname,
+ ctypename,cname,
+ golenvar,golenvar)
+ s += 'for i,v := range x.{} {{\n'.format(goname)
+ s += 'if err := v.toC(&c{}[i]); err != nil {{\n'.format(goname)
+ s += 'return err\n'
+ s += '}\n}\n}\n'
+
+ return s
+
def xenlight_golang_fmt_name(name, exported = True):
"""
Take a given type name and return an
diff --git a/tools/golang/xenlight/helpers.gen.go b/tools/golang/xenlight/helpers.gen.go
index 0bf2b0ddef..b9a7e828a0 100644
--- a/tools/golang/xenlight/helpers.gen.go
+++ b/tools/golang/xenlight/helpers.gen.go
@@ -643,6 +643,16 @@ func (x *VcpuSchedParams) toC(xc *C.libxl_vcpu_sched_params) (err error) {
}()

xc.sched = C.libxl_scheduler(x.Sched)
+ if numVcpus := len(x.Vcpus); numVcpus > 0 {
+ xc.vcpus = (*C.libxl_sched_params)(C.malloc(C.ulong(numVcpus) * C.sizeof_libxl_sched_params))
+ xc.num_vcpus = C.int(numVcpus)
+ cVcpus := (*[1 << 28]C.libxl_sched_params)(unsafe.Pointer(xc.vcpus))[:numVcpus:numVcpus]
+ for i, v := range x.Vcpus {
+ if err := v.toC(&cVcpus[i]); err != nil {
+ return err
+ }
+ }
+ }

return nil
}
@@ -703,6 +713,14 @@ func (x *VnodeInfo) toC(xc *C.libxl_vnode_info) (err error) {
}()

xc.memkb = C.uint64_t(x.Memkb)
+ if numDistances := len(x.Distances); numDistances > 0 {
+ xc.distances = (*C.uint32_t)(C.malloc(C.size_t(numDistances * numDistances)))
+ xc.num_distances = C.int(numDistances)
+ cDistances := (*[1 << 28]C.uint32_t)(unsafe.Pointer(xc.distances))[:numDistances:numDistances]
+ for i, v := range x.Distances {
+ cDistances[i] = C.uint32_t(v)
+ }
+ }
xc.pnode = C.uint32_t(x.Pnode)
if err := x.Vcpus.toC(&xc.vcpus); err != nil {
return err
@@ -1050,6 +1068,26 @@ func (x *DomainBuildInfo) toC(xc *C.libxl_domain_build_info) (err error) {
if err := x.Nodemap.toC(&xc.nodemap); err != nil {
return err
}
+ if numVcpuHardAffinity := len(x.VcpuHardAffinity); numVcpuHardAffinity > 0 {
+ xc.vcpu_hard_affinity = (*C.libxl_bitmap)(C.malloc(C.ulong(numVcpuHardAffinity) * C.sizeof_libxl_bitmap))
+ xc.num_vcpu_hard_affinity = C.int(numVcpuHardAffinity)
+ cVcpuHardAffinity := (*[1 << 28]C.libxl_bitmap)(unsafe.Pointer(xc.vcpu_hard_affinity))[:numVcpuHardAffinity:numVcpuHardAffinity]
+ for i, v := range x.VcpuHardAffinity {
+ if err := v.toC(&cVcpuHardAffinity[i]); err != nil {
+ return err
+ }
+ }
+ }
+ if numVcpuSoftAffinity := len(x.VcpuSoftAffinity); numVcpuSoftAffinity > 0 {
+ xc.vcpu_soft_affinity = (*C.libxl_bitmap)(C.malloc(C.ulong(numVcpuSoftAffinity) * C.sizeof_libxl_bitmap))
+ xc.num_vcpu_soft_affinity = C.int(numVcpuSoftAffinity)
+ cVcpuSoftAffinity := (*[1 << 28]C.libxl_bitmap)(unsafe.Pointer(xc.vcpu_soft_affinity))[:numVcpuSoftAffinity:numVcpuSoftAffinity]
+ for i, v := range x.VcpuSoftAffinity {
+ if err := v.toC(&cVcpuSoftAffinity[i]); err != nil {
+ return err
+ }
+ }
+ }
if err := x.NumaPlacement.toC(&xc.numa_placement); err != nil {
return err
}
@@ -1076,6 +1114,16 @@ func (x *DomainBuildInfo) toC(xc *C.libxl_domain_build_info) (err error) {
if x.BlkdevStart != "" {
xc.blkdev_start = C.CString(x.BlkdevStart)
}
+ if numVnumaNodes := len(x.VnumaNodes); numVnumaNodes > 0 {
+ xc.vnuma_nodes = (*C.libxl_vnode_info)(C.malloc(C.ulong(numVnumaNodes) * C.sizeof_libxl_vnode_info))
+ xc.num_vnuma_nodes = C.int(numVnumaNodes)
+ cVnumaNodes := (*[1 << 28]C.libxl_vnode_info)(unsafe.Pointer(xc.vnuma_nodes))[:numVnumaNodes:numVnumaNodes]
+ for i, v := range x.VnumaNodes {
+ if err := v.toC(&cVnumaNodes[i]); err != nil {
+ return err
+ }
+ }
+ }
xc.max_grant_frames = C.uint32_t(x.MaxGrantFrames)
xc.max_maptrack_frames = C.uint32_t(x.MaxMaptrackFrames)
xc.device_model_version = C.libxl_device_model_version(x.DeviceModelVersion)
@@ -1104,6 +1152,34 @@ func (x *DomainBuildInfo) toC(xc *C.libxl_domain_build_info) (err error) {
if err := x.SchedParams.toC(&xc.sched_params); err != nil {
return err
}
+ if numIoports := len(x.Ioports); numIoports > 0 {
+ xc.ioports = (*C.libxl_ioport_range)(C.malloc(C.ulong(numIoports) * C.sizeof_libxl_ioport_range))
+ xc.num_ioports = C.int(numIoports)
+ cIoports := (*[1 << 28]C.libxl_ioport_range)(unsafe.Pointer(xc.ioports))[:numIoports:numIoports]
+ for i, v := range x.Ioports {
+ if err := v.toC(&cIoports[i]); err != nil {
+ return err
+ }
+ }
+ }
+ if numIrqs := len(x.Irqs); numIrqs > 0 {
+ xc.irqs = (*C.uint32_t)(C.malloc(C.size_t(numIrqs * numIrqs)))
+ xc.num_irqs = C.int(numIrqs)
+ cIrqs := (*[1 << 28]C.uint32_t)(unsafe.Pointer(xc.irqs))[:numIrqs:numIrqs]
+ for i, v := range x.Irqs {
+ cIrqs[i] = C.uint32_t(v)
+ }
+ }
+ if numIomem := len(x.Iomem); numIomem > 0 {
+ xc.iomem = (*C.libxl_iomem_range)(C.malloc(C.ulong(numIomem) * C.sizeof_libxl_iomem_range))
+ xc.num_iomem = C.int(numIomem)
+ cIomem := (*[1 << 28]C.libxl_iomem_range)(unsafe.Pointer(xc.iomem))[:numIomem:numIomem]
+ for i, v := range x.Iomem {
+ if err := v.toC(&cIomem[i]); err != nil {
+ return err
+ }
+ }
+ }
if err := x.ClaimMode.toC(&xc.claim_mode); err != nil {
return err
}
@@ -2136,6 +2212,16 @@ func (x *DeviceVdispl) toC(xc *C.libxl_device_vdispl) (err error) {
}
xc.devid = C.libxl_devid(x.Devid)
xc.be_alloc = C.bool(x.BeAlloc)
+ if numConnectors := len(x.Connectors); numConnectors > 0 {
+ xc.connectors = (*C.libxl_connector_param)(C.malloc(C.ulong(numConnectors) * C.sizeof_libxl_connector_param))
+ xc.num_connectors = C.int(numConnectors)
+ cConnectors := (*[1 << 28]C.libxl_connector_param)(unsafe.Pointer(xc.connectors))[:numConnectors:numConnectors]
+ for i, v := range x.Connectors {
+ if err := v.toC(&cConnectors[i]); err != nil {
+ return err
+ }
+ }
+ }

return nil
}
@@ -2167,6 +2253,22 @@ func (x *VsndParams) toC(xc *C.libxl_vsnd_params) (err error) {
}
}()

+ if numSampleRates := len(x.SampleRates); numSampleRates > 0 {
+ xc.sample_rates = (*C.uint32_t)(C.malloc(C.size_t(numSampleRates * numSampleRates)))
+ xc.num_sample_rates = C.int(numSampleRates)
+ cSampleRates := (*[1 << 28]C.uint32_t)(unsafe.Pointer(xc.sample_rates))[:numSampleRates:numSampleRates]
+ for i, v := range x.SampleRates {
+ cSampleRates[i] = C.uint32_t(v)
+ }
+ }
+ if numSampleFormats := len(x.SampleFormats); numSampleFormats > 0 {
+ xc.sample_formats = (*C.libxl_vsnd_pcm_format)(C.malloc(C.size_t(numSampleFormats * numSampleFormats)))
+ xc.num_sample_formats = C.int(numSampleFormats)
+ cSampleFormats := (*[1 << 28]C.libxl_vsnd_pcm_format)(unsafe.Pointer(xc.sample_formats))[:numSampleFormats:numSampleFormats]
+ for i, v := range x.SampleFormats {
+ cSampleFormats[i] = C.libxl_vsnd_pcm_format(v)
+ }
+ }
xc.channels_min = C.uint32_t(x.ChannelsMin)
xc.channels_max = C.uint32_t(x.ChannelsMax)
xc.buffer_size = C.uint32_t(x.BufferSize)
@@ -2232,6 +2334,16 @@ func (x *VsndPcm) toC(xc *C.libxl_vsnd_pcm) (err error) {
if err := x.Params.toC(&xc.params); err != nil {
return err
}
+ if numVsndStreams := len(x.Streams); numVsndStreams > 0 {
+ xc.streams = (*C.libxl_vsnd_stream)(C.malloc(C.ulong(numVsndStreams) * C.sizeof_libxl_vsnd_stream))
+ xc.num_vsnd_streams = C.int(numVsndStreams)
+ cStreams := (*[1 << 28]C.libxl_vsnd_stream)(unsafe.Pointer(xc.streams))[:numVsndStreams:numVsndStreams]
+ for i, v := range x.Streams {
+ if err := v.toC(&cStreams[i]); err != nil {
+ return err
+ }
+ }
+ }

return nil
}
@@ -2278,6 +2390,16 @@ func (x *DeviceVsnd) toC(xc *C.libxl_device_vsnd) (err error) {
if err := x.Params.toC(&xc.params); err != nil {
return err
}
+ if numVsndPcms := len(x.Pcms); numVsndPcms > 0 {
+ xc.pcms = (*C.libxl_vsnd_pcm)(C.malloc(C.ulong(numVsndPcms) * C.sizeof_libxl_vsnd_pcm))
+ xc.num_vsnd_pcms = C.int(numVsndPcms)
+ cPcms := (*[1 << 28]C.libxl_vsnd_pcm)(unsafe.Pointer(xc.pcms))[:numVsndPcms:numVsndPcms]
+ for i, v := range x.Pcms {
+ if err := v.toC(&cPcms[i]); err != nil {
+ return err
+ }
+ }
+ }

return nil
}
@@ -2431,6 +2553,156 @@ func (x *DomainConfig) toC(xc *C.libxl_domain_config) (err error) {
if err := x.BInfo.toC(&xc.b_info); err != nil {
return err
}
+ if numDisks := len(x.Disks); numDisks > 0 {
+ xc.disks = (*C.libxl_device_disk)(C.malloc(C.ulong(numDisks) * C.sizeof_libxl_device_disk))
+ xc.num_disks = C.int(numDisks)
+ cDisks := (*[1 << 28]C.libxl_device_disk)(unsafe.Pointer(xc.disks))[:numDisks:numDisks]
+ for i, v := range x.Disks {
+ if err := v.toC(&cDisks[i]); err != nil {
+ return err
+ }
+ }
+ }
+ if numNics := len(x.Nics); numNics > 0 {
+ xc.nics = (*C.libxl_device_nic)(C.malloc(C.ulong(numNics) * C.sizeof_libxl_device_nic))
+ xc.num_nics = C.int(numNics)
+ cNics := (*[1 << 28]C.libxl_device_nic)(unsafe.Pointer(xc.nics))[:numNics:numNics]
+ for i, v := range x.Nics {
+ if err := v.toC(&cNics[i]); err != nil {
+ return err
+ }
+ }
+ }
+ if numPcidevs := len(x.Pcidevs); numPcidevs > 0 {
+ xc.pcidevs = (*C.libxl_device_pci)(C.malloc(C.ulong(numPcidevs) * C.sizeof_libxl_device_pci))
+ xc.num_pcidevs = C.int(numPcidevs)
+ cPcidevs := (*[1 << 28]C.libxl_device_pci)(unsafe.Pointer(xc.pcidevs))[:numPcidevs:numPcidevs]
+ for i, v := range x.Pcidevs {
+ if err := v.toC(&cPcidevs[i]); err != nil {
+ return err
+ }
+ }
+ }
+ if numRdms := len(x.Rdms); numRdms > 0 {
+ xc.rdms = (*C.libxl_device_rdm)(C.malloc(C.ulong(numRdms) * C.sizeof_libxl_device_rdm))
+ xc.num_rdms = C.int(numRdms)
+ cRdms := (*[1 << 28]C.libxl_device_rdm)(unsafe.Pointer(xc.rdms))[:numRdms:numRdms]
+ for i, v := range x.Rdms {
+ if err := v.toC(&cRdms[i]); err != nil {
+ return err
+ }
+ }
+ }
+ if numDtdevs := len(x.Dtdevs); numDtdevs > 0 {
+ xc.dtdevs = (*C.libxl_device_dtdev)(C.malloc(C.ulong(numDtdevs) * C.sizeof_libxl_device_dtdev))
+ xc.num_dtdevs = C.int(numDtdevs)
+ cDtdevs := (*[1 << 28]C.libxl_device_dtdev)(unsafe.Pointer(xc.dtdevs))[:numDtdevs:numDtdevs]
+ for i, v := range x.Dtdevs {
+ if err := v.toC(&cDtdevs[i]); err != nil {
+ return err
+ }
+ }
+ }
+ if numVfbs := len(x.Vfbs); numVfbs > 0 {
+ xc.vfbs = (*C.libxl_device_vfb)(C.malloc(C.ulong(numVfbs) * C.sizeof_libxl_device_vfb))
+ xc.num_vfbs = C.int(numVfbs)
+ cVfbs := (*[1 << 28]C.libxl_device_vfb)(unsafe.Pointer(xc.vfbs))[:numVfbs:numVfbs]
+ for i, v := range x.Vfbs {
+ if err := v.toC(&cVfbs[i]); err != nil {
+ return err
+ }
+ }
+ }
+ if numVkbs := len(x.Vkbs); numVkbs > 0 {
+ xc.vkbs = (*C.libxl_device_vkb)(C.malloc(C.ulong(numVkbs) * C.sizeof_libxl_device_vkb))
+ xc.num_vkbs = C.int(numVkbs)
+ cVkbs := (*[1 << 28]C.libxl_device_vkb)(unsafe.Pointer(xc.vkbs))[:numVkbs:numVkbs]
+ for i, v := range x.Vkbs {
+ if err := v.toC(&cVkbs[i]); err != nil {
+ return err
+ }
+ }
+ }
+ if numVtpms := len(x.Vtpms); numVtpms > 0 {
+ xc.vtpms = (*C.libxl_device_vtpm)(C.malloc(C.ulong(numVtpms) * C.sizeof_libxl_device_vtpm))
+ xc.num_vtpms = C.int(numVtpms)
+ cVtpms := (*[1 << 28]C.libxl_device_vtpm)(unsafe.Pointer(xc.vtpms))[:numVtpms:numVtpms]
+ for i, v := range x.Vtpms {
+ if err := v.toC(&cVtpms[i]); err != nil {
+ return err
+ }
+ }
+ }
+ if numP9S := len(x.P9S); numP9S > 0 {
+ xc.p9s = (*C.libxl_device_p9)(C.malloc(C.ulong(numP9S) * C.sizeof_libxl_device_p9))
+ xc.num_p9s = C.int(numP9S)
+ cP9S := (*[1 << 28]C.libxl_device_p9)(unsafe.Pointer(xc.p9s))[:numP9S:numP9S]
+ for i, v := range x.P9S {
+ if err := v.toC(&cP9S[i]); err != nil {
+ return err
+ }
+ }
+ }
+ if numPvcallsifs := len(x.Pvcallsifs); numPvcallsifs > 0 {
+ xc.pvcallsifs = (*C.libxl_device_pvcallsif)(C.malloc(C.ulong(numPvcallsifs) * C.sizeof_libxl_device_pvcallsif))
+ xc.num_pvcallsifs = C.int(numPvcallsifs)
+ cPvcallsifs := (*[1 << 28]C.libxl_device_pvcallsif)(unsafe.Pointer(xc.pvcallsifs))[:numPvcallsifs:numPvcallsifs]
+ for i, v := range x.Pvcallsifs {
+ if err := v.toC(&cPvcallsifs[i]); err != nil {
+ return err
+ }
+ }
+ }
+ if numVdispls := len(x.Vdispls); numVdispls > 0 {
+ xc.vdispls = (*C.libxl_device_vdispl)(C.malloc(C.ulong(numVdispls) * C.sizeof_libxl_device_vdispl))
+ xc.num_vdispls = C.int(numVdispls)
+ cVdispls := (*[1 << 28]C.libxl_device_vdispl)(unsafe.Pointer(xc.vdispls))[:numVdispls:numVdispls]
+ for i, v := range x.Vdispls {
+ if err := v.toC(&cVdispls[i]); err != nil {
+ return err
+ }
+ }
+ }
+ if numVsnds := len(x.Vsnds); numVsnds > 0 {
+ xc.vsnds = (*C.libxl_device_vsnd)(C.malloc(C.ulong(numVsnds) * C.sizeof_libxl_device_vsnd))
+ xc.num_vsnds = C.int(numVsnds)
+ cVsnds := (*[1 << 28]C.libxl_device_vsnd)(unsafe.Pointer(xc.vsnds))[:numVsnds:numVsnds]
+ for i, v := range x.Vsnds {
+ if err := v.toC(&cVsnds[i]); err != nil {
+ return err
+ }
+ }
+ }
+ if numChannels := len(x.Channels); numChannels > 0 {
+ xc.channels = (*C.libxl_device_channel)(C.malloc(C.ulong(numChannels) * C.sizeof_libxl_device_channel))
+ xc.num_channels = C.int(numChannels)
+ cChannels := (*[1 << 28]C.libxl_device_channel)(unsafe.Pointer(xc.channels))[:numChannels:numChannels]
+ for i, v := range x.Channels {
+ if err := v.toC(&cChannels[i]); err != nil {
+ return err
+ }
+ }
+ }
+ if numUsbctrls := len(x.Usbctrls); numUsbctrls > 0 {
+ xc.usbctrls = (*C.libxl_device_usbctrl)(C.malloc(C.ulong(numUsbctrls) * C.sizeof_libxl_device_usbctrl))
+ xc.num_usbctrls = C.int(numUsbctrls)
+ cUsbctrls := (*[1 << 28]C.libxl_device_usbctrl)(unsafe.Pointer(xc.usbctrls))[:numUsbctrls:numUsbctrls]
+ for i, v := range x.Usbctrls {
+ if err := v.toC(&cUsbctrls[i]); err != nil {
+ return err
+ }
+ }
+ }
+ if numUsbdevs := len(x.Usbdevs); numUsbdevs > 0 {
+ xc.usbdevs = (*C.libxl_device_usbdev)(C.malloc(C.ulong(numUsbdevs) * C.sizeof_libxl_device_usbdev))
+ xc.num_usbdevs = C.int(numUsbdevs)
+ cUsbdevs := (*[1 << 28]C.libxl_device_usbdev)(unsafe.Pointer(xc.usbdevs))[:numUsbdevs:numUsbdevs]
+ for i, v := range x.Usbdevs {
+ if err := v.toC(&cUsbdevs[i]); err != nil {
+ return err
+ }
+ }
+ }
xc.on_poweroff = C.libxl_action_on_shutdown(x.OnPoweroff)
xc.on_reboot = C.libxl_action_on_shutdown(x.OnReboot)
xc.on_watchdog = C.libxl_action_on_shutdown(x.OnWatchdog)
@@ -2770,6 +3042,16 @@ func (x *Vdisplinfo) toC(xc *C.libxl_vdisplinfo) (err error) {
xc.devid = C.libxl_devid(x.Devid)
xc.state = C.int(x.State)
xc.be_alloc = C.bool(x.BeAlloc)
+ if numConnectors := len(x.Connectors); numConnectors > 0 {
+ xc.connectors = (*C.libxl_connectorinfo)(C.malloc(C.ulong(numConnectors) * C.sizeof_libxl_connectorinfo))
+ xc.num_connectors = C.int(numConnectors)
+ cConnectors := (*[1 << 28]C.libxl_connectorinfo)(unsafe.Pointer(xc.connectors))[:numConnectors:numConnectors]
+ for i, v := range x.Connectors {
+ if err := v.toC(&cConnectors[i]); err != nil {
+ return err
+ }
+ }
+ }

return nil
}
@@ -2814,6 +3096,17 @@ func (x *Pcminfo) toC(xc *C.libxl_pcminfo) (err error) {
}
}()

+ if numVsndStreams := len(x.Streams); numVsndStreams > 0 {
+ xc.streams = (*C.libxl_streaminfo)(C.malloc(C.ulong(numVsndStreams) * C.sizeof_libxl_streaminfo))
+ xc.num_vsnd_streams = C.int(numVsndStreams)
+ cStreams := (*[1 << 28]C.libxl_streaminfo)(unsafe.Pointer(xc.streams))[:numVsndStreams:numVsndStreams]
+ for i, v := range x.Streams {
+ if err := v.toC(&cStreams[i]); err != nil {
+ return err
+ }
+ }
+ }
+
return nil
}

@@ -2853,6 +3146,16 @@ func (x *Vsndinfo) toC(xc *C.libxl_vsndinfo) (err error) {
xc.frontend_id = C.uint32_t(x.FrontendId)
xc.devid = C.libxl_devid(x.Devid)
xc.state = C.int(x.State)
+ if numVsndPcms := len(x.Pcms); numVsndPcms > 0 {
+ xc.pcms = (*C.libxl_pcminfo)(C.malloc(C.ulong(numVsndPcms) * C.sizeof_libxl_pcminfo))
+ xc.num_vsnd_pcms = C.int(numVsndPcms)
+ cPcms := (*[1 << 28]C.libxl_pcminfo)(unsafe.Pointer(xc.pcms))[:numVsndPcms:numVsndPcms]
+ for i, v := range x.Pcms {
+ if err := v.toC(&cPcms[i]); err != nil {
+ return err
+ }
+ }
+ }

return nil
}
@@ -2915,6 +3218,14 @@ func (x *Numainfo) toC(xc *C.libxl_numainfo) (err error) {

xc.size = C.uint64_t(x.Size)
xc.free = C.uint64_t(x.Free)
+ if numDists := len(x.Dists); numDists > 0 {
+ xc.dists = (*C.uint32_t)(C.malloc(C.size_t(numDists * numDists)))
+ xc.num_dists = C.int(numDists)
+ cDists := (*[1 << 28]C.uint32_t)(unsafe.Pointer(xc.dists))[:numDists:numDists]
+ for i, v := range x.Dists {
+ cDists[i] = C.uint32_t(v)
+ }
+ }

return nil
}
--
2.17.1


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Re: [PATCH v5 3/3] golang/xenlight: implement array Go to C marshaling [ In reply to ]
On 1/4/20 9:00 PM, Nick Rosbrook wrote:
> Signed-off-by: Nick Rosbrook <rosbrookn@ainfosec.com>

Reviewed-by: George Dunlap <george.dunlap@citrix.com>

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