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virpci: Introduce virPCIDeviceAddressCopy
This helper is cleaner than plain memcpy() because one doesn't have to look into virPCIDeviceAddress struct to see if it contains any strings / pointers. Signed-off-by: Michal Privoznik <mprivozn@redhat.com> ACKed-by: Peter Krempa <pkrempa@redhat.com> Reviewed-by: Cole Robinson <crobinso@redhat.com>
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@ -2706,6 +2706,7 @@ virObjectUnref;
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# util/virpci.h
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virPCIDeviceAddressAsString;
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virPCIDeviceAddressCopy;
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virPCIDeviceAddressEqual;
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virPCIDeviceAddressFree;
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virPCIDeviceAddressGetIOMMUGroupAddresses;
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@ -1340,6 +1340,20 @@ virPCIDeviceAddressEqual(const virPCIDeviceAddress *addr1,
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return false;
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}
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/**
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* virPCIDeviceAddressCopy:
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* @dst: where to store address
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* @src: source address to copy
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*
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* Creates a deep copy of given @src address and stores it into
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* @dst which has to be pre-allocated by caller.
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*/
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void virPCIDeviceAddressCopy(virPCIDeviceAddressPtr dst,
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const virPCIDeviceAddress *src)
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{
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memcpy(dst, src, sizeof(*src));
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}
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char *
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virPCIDeviceAddressAsString(const virPCIDeviceAddress *addr)
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{
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@ -44,6 +44,7 @@ typedef virZPCIDeviceAddress *virZPCIDeviceAddressPtr;
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struct _virZPCIDeviceAddress {
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unsigned int uid; /* exempt from syntax-check */
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unsigned int fid;
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/* Don't forget to update virPCIDeviceAddressCopy if needed. */
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};
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#define VIR_PCI_DEVICE_ADDRESS_FMT "%04x:%02x:%02x.%d"
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@ -56,6 +57,7 @@ struct _virPCIDeviceAddress {
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int multi; /* virTristateSwitch */
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int extFlags; /* enum virPCIDeviceAddressExtensionFlags */
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virZPCIDeviceAddress zpci;
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/* Don't forget to update virPCIDeviceAddressCopy if needed. */
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};
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typedef enum {
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@ -236,6 +238,8 @@ bool virPCIDeviceAddressIsEmpty(const virPCIDeviceAddress *addr);
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bool virPCIDeviceAddressEqual(const virPCIDeviceAddress *addr1,
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const virPCIDeviceAddress *addr2);
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void virPCIDeviceAddressCopy(virPCIDeviceAddressPtr dst,
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const virPCIDeviceAddress *src);
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char *virPCIDeviceAddressAsString(const virPCIDeviceAddress *addr)
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ATTRIBUTE_NONNULL(1);
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