[libvirt] [PATCH 3/9] Store USB port path as an array of integers
Ján Tomko
jtomko at redhat.com
Wed Aug 12 14:52:13 UTC 2015
In preparation to tracking which USB addresses are occupied.
Introduce two helper functions for printing the port path
as a string and appending it to a virBuffer.
---
src/conf/domain_addr.c | 25 +++++++++++++++++++++++++
src/conf/domain_addr.h | 8 ++++++++
src/conf/domain_conf.c | 29 +++++++++++++++--------------
src/conf/domain_conf.h | 4 +++-
src/libvirt_private.syms | 2 ++
src/qemu/qemu_command.c | 3 ++-
6 files changed, 55 insertions(+), 16 deletions(-)
diff --git a/src/conf/domain_addr.c b/src/conf/domain_addr.c
index 9883c4f..a5d142d 100644
--- a/src/conf/domain_addr.c
+++ b/src/conf/domain_addr.c
@@ -1173,3 +1173,28 @@ virDomainVirtioSerialAddrRelease(virDomainVirtioSerialAddrSetPtr addrs,
VIR_FREE(str);
return ret;
}
+
+
+void
+virDomainUSBAddressGetPortBuf(virBufferPtr buf,
+ unsigned int *port)
+{
+ size_t i;
+
+ for (i = 0; i < VIR_DOMAIN_DEVICE_USB_MAX_PORT_DEPTH; i++) {
+ if (port[i] == 0)
+ break;
+ virBufferAsprintf(buf, "%u.", port[i]);
+ }
+ virBufferTrim(buf, ".", -1);
+}
+
+char *
+virDomainUSBAddressGetPortString(unsigned int *port)
+{
+ virBuffer buf = VIR_BUFFER_INITIALIZER;
+ virDomainUSBAddressGetPortBuf(&buf, port);
+ if (virBufferCheckError(&buf) < 0)
+ return NULL;
+ return virBufferContentAndReset(&buf);
+}
diff --git a/src/conf/domain_addr.h b/src/conf/domain_addr.h
index 208635c..c6d8da7 100644
--- a/src/conf/domain_addr.h
+++ b/src/conf/domain_addr.h
@@ -240,4 +240,12 @@ virDomainVirtioSerialAddrRelease(virDomainVirtioSerialAddrSetPtr addrs,
virDomainDeviceInfoPtr info)
ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2);
+void
+virDomainUSBAddressGetPortBuf(virBufferPtr buf,
+ unsigned int *port)
+ ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2);
+char *
+virDomainUSBAddressGetPortString(unsigned int *port)
+ ATTRIBUTE_NONNULL(1);
+
#endif /* __DOMAIN_ADDR_H__ */
diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index f1e02e3..0526aee 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -33,6 +33,7 @@
#include "internal.h"
#include "virerror.h"
#include "datatypes.h"
+#include "domain_addr.h"
#include "domain_conf.h"
#include "snapshot_conf.h"
#include "viralloc.h"
@@ -3345,8 +3346,6 @@ virDomainDeviceInfoCopy(virDomainDeviceInfoPtr dst,
void virDomainDeviceInfoClear(virDomainDeviceInfoPtr info)
{
VIR_FREE(info->alias);
- if (info->type == VIR_DOMAIN_DEVICE_ADDRESS_TYPE_USB)
- VIR_FREE(info->addr.usb.port);
memset(&info->addr, 0, sizeof(info->addr));
info->type = VIR_DOMAIN_DEVICE_ADDRESS_TYPE_NONE;
VIR_FREE(info->romfile);
@@ -4329,9 +4328,10 @@ virDomainDeviceInfoFormat(virBufferPtr buf,
break;
case VIR_DOMAIN_DEVICE_ADDRESS_TYPE_USB:
- virBufferAsprintf(buf, " bus='%d' port='%s'",
- info->addr.usb.bus,
- info->addr.usb.port);
+ virBufferAsprintf(buf, " bus='%d' port='",
+ info->addr.usb.bus);
+ virDomainUSBAddressGetPortBuf(buf, info->addr.usb.port);
+ virBufferAddLit(buf, "'");
break;
case VIR_DOMAIN_DEVICE_ADDRESS_TYPE_SPAPRVIO:
@@ -4567,27 +4567,28 @@ virDomainDeviceUSBAddressParseXML(xmlNodePtr node,
virDomainDeviceUSBAddressPtr addr)
{
char *port, *bus, *tmp;
- unsigned int p;
int ret = -1;
+ size_t i;
memset(addr, 0, sizeof(*addr));
port = virXMLPropString(node, "port");
bus = virXMLPropString(node, "bus");
- if (port &&
- ((virStrToLong_uip(port, &tmp, 10, &p) < 0 || (*tmp != '\0' && *tmp != '.')) ||
- (*tmp == '.' && (virStrToLong_ui(tmp + 1, &tmp, 10, &p) < 0 || (*tmp != '\0' && *tmp != '.'))) ||
- (*tmp == '.' && (virStrToLong_ui(tmp + 1, &tmp, 10, &p) < 0 || (*tmp != '\0' && *tmp != '.'))) ||
- (*tmp == '.' && (virStrToLong_ui(tmp + 1, &tmp, 10, &p) < 0 || (*tmp != '\0'))))) {
+ for (i = 0, tmp = port;
+ tmp && *tmp != '\0' && i < VIR_DOMAIN_DEVICE_USB_MAX_PORT_DEPTH;
+ i++) {
+ if (virStrToLong_uip(tmp, &tmp, 10, &addr->port[i]) < 0)
+ break;
+ if (*tmp == '.')
+ tmp++;
+ }
+ if (tmp && *tmp != '\0') {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Cannot parse <address> 'port' attribute"));
goto cleanup;
}
- addr->port = port;
- port = NULL;
-
if (bus &&
virStrToLong_uip(bus, NULL, 10, &addr->bus) < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h
index 9762c4f..abd2cdb 100644
--- a/src/conf/domain_conf.h
+++ b/src/conf/domain_conf.h
@@ -294,11 +294,13 @@ struct _virDomainDeviceCcidAddress {
unsigned int slot;
};
+# define VIR_DOMAIN_DEVICE_USB_MAX_PORT_DEPTH 7
+
typedef struct _virDomainDeviceUSBAddress virDomainDeviceUSBAddress;
typedef virDomainDeviceUSBAddress *virDomainDeviceUSBAddressPtr;
struct _virDomainDeviceUSBAddress {
unsigned int bus;
- char *port;
+ unsigned int port[VIR_DOMAIN_DEVICE_USB_MAX_PORT_DEPTH];
};
typedef struct _virDomainDeviceSpaprVioAddress virDomainDeviceSpaprVioAddress;
diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms
index f1e5f48..5168230 100644
--- a/src/libvirt_private.syms
+++ b/src/libvirt_private.syms
@@ -106,6 +106,8 @@ virDomainPCIAddressSetFree;
virDomainPCIAddressSetGrow;
virDomainPCIAddressSlotInUse;
virDomainPCIAddressValidate;
+virDomainUSBAddressGetPortBuf;
+virDomainUSBAddressGetPortString;
virDomainVirtioSerialAddrAssign;
virDomainVirtioSerialAddrAutoAssign;
virDomainVirtioSerialAddrIsComplete;
diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
index 84cbfe1..4e77279 100644
--- a/src/qemu/qemu_command.c
+++ b/src/qemu/qemu_command.c
@@ -2796,7 +2796,8 @@ qemuBuildDeviceAddressStr(virBufferPtr buf,
VIR_DOMAIN_CONTROLLER_TYPE_USB,
info->addr.usb.bus)))
goto cleanup;
- virBufferAsprintf(buf, ",bus=%s.0,port=%s", contAlias, info->addr.usb.port);
+ virBufferAsprintf(buf, ",bus=%s.0,port=", contAlias);
+ virDomainUSBAddressGetPortBuf(buf, info->addr.usb.port);
} else if (info->type == VIR_DOMAIN_DEVICE_ADDRESS_TYPE_SPAPRVIO) {
if (info->addr.spaprvio.has_reg)
virBufferAsprintf(buf, ",reg=0x%llx", info->addr.spaprvio.reg);
--
2.4.6
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