[Libvirt-cim] [PATCH] (#2) Fix the problem that libvirt-cim can't find cdrom device that do not have disk

# HG changeset patch # User Wayne Xia <xiawenc(a)linux.vnet.ibm.com&gt; # Date 1316154275 -28800 # Node ID afee8d9b7214884ab74690b3ca9fd3d4f139f455 # Parent db809376d763493849c2a19f587969eaec619b75 (#2) Fix the problem that libvirt-cim can't find cdrom device that do not have disk This patch would allow define a system with an empty CDROM device, and allow method modify resource settings to insert ISO files into an empty CDROM device. Examples: InvokeMethod(ModifyResourceSettings): ResourceSettings: ['instance of KVM_DiskResourceAllocationSettingData {\nResourceType = 17;\nInstanceID = "test/hdc";\nEmulatedType = 1;\nVirtualDevice = "hdc";\nAddress = "";\n};'] InvokeMethod(ModifyResourceSettings): ResourceSettings: ['instance of KVM_DiskResourceAllocationSettingData {\nResourceType = 17;\nInstanceID = "test/hdc";\nEmulatedType = 1;\nVirtualDevice = "hdc";\nAddress = "/var/lib/libvirt/images/test-disk.iso";\n};'] Note that the Address property should be set to "", not None(not set), to tell that user want an ejection. (#2) Add comments that saying what the code does, and improved some codes to avoid doing duplicated things. Signed-off-by: Wayne Xia <xiawenc(a)linux.vnet.ibm.com&gt; diff -r db809376d763 -r afee8d9b7214 libxkutil/device_parsing.c --- a/libxkutil/device_parsing.c Thu Jul 28 13:56:00 2011 -0300 +++ b/libxkutil/device_parsing.c Fri Sep 16 14:24:35 2011 +0800 @@ -287,6 +287,13 @@ ddev->shareable = true; } } + + /* handle the situation that a cdrom device have no disk in it, no ISO file */ + if ((XSTREQ(ddev->device, "cdrom")) && (ddev->source == NULL)) { + ddev->source = strdup(""); + ddev->disk_type = DISK_FILE; + } + if ((ddev->source == NULL) || (ddev->virtual_dev == NULL)) goto err; diff -r db809376d763 -r afee8d9b7214 libxkutil/xmlgen.c --- a/libxkutil/xmlgen.c Thu Jul 28 13:56:00 2011 -0300 +++ b/libxkutil/xmlgen.c Fri Sep 16 14:24:35 2011 +0800 @@ -110,10 +110,18 @@ xmlNewProp(tmp, BAD_CAST "cache", BAD_CAST dev->cache); } - tmp = xmlNewChild(disk, NULL, BAD_CAST "source", NULL); - if (tmp == NULL) - return XML_ERROR; - xmlNewProp(tmp, BAD_CAST "file", BAD_CAST dev->source); + if ((XSTREQ(dev->device, "cdrom")) && + (XSTREQ(dev->source, ""))) { + /* This is the situation that user defined a cdrom device without + disk in it, so skip generating a line saying "source", for that + xml defination for libvirt should not have this defined in this + situation. */ + } else { + tmp = xmlNewChild(disk, NULL, BAD_CAST "source", NULL); + if (tmp == NULL) + return XML_ERROR; + xmlNewProp(tmp, BAD_CAST "file", BAD_CAST dev->source); + } tmp = xmlNewChild(disk, NULL, BAD_CAST "target", NULL); if (tmp == NULL) diff -r db809376d763 -r afee8d9b7214 src/Virt_VirtualSystemManagementService.c --- a/src/Virt_VirtualSystemManagementService.c Thu Jul 28 13:56:00 2011 -0300 +++ b/src/Virt_VirtualSystemManagementService.c Fri Sep 16 14:24:35 2011 +0800 @@ -879,6 +879,17 @@ dev->dev.disk.device = strdup("disk"); else if (type == VIRT_DISK_TYPE_CDROM) { dev->dev.disk.device = strdup("cdrom"); + /* following code is for the case that user defined cdrom device + without disk in it, or a empty disk "" */ + if (XSTREQ(dev->dev.disk.source, "")) { + dev->dev.disk.disk_type = DISK_FILE; + } + if (XSTREQ(dev->dev.disk.source, "/dev/null")) { + dev->dev.disk.disk_type = DISK_FILE; + free(dev->dev.disk.source); + dev->dev.disk.source = strdup(""); + } + if (dev->dev.disk.disk_type == DISK_UNKNOWN) dev->dev.disk.disk_type = DISK_PHY; }