This commit adds qemu driver implementaion to get xml description
for managed save state domain.

Signed-off-by: Kothapally Madhu Pavan <kmp@linux.vnet.ibm.com>
---
 src/qemu/qemu_driver.c | 40 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 40 insertions(+)

diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
index e91663c..c9b3ef3 100644
--- a/src/qemu/qemu_driver.c
+++ b/src/qemu/qemu_driver.c
@@ -6798,6 +6798,45 @@ qemuDomainSaveImageDefineXML(virConnectPtr conn, const char *path,
     return ret;
 }
 
+static char *
+qemuDomainManagedSaveGetXMLDesc(virDomainPtr dom, unsigned int flags)
+{
+    virQEMUDriverPtr driver = dom->conn->privateData;
+    virDomainObjPtr vm;
+    char *path = NULL;
+    char *ret = NULL;
+    virDomainDefPtr def = NULL;
+    int fd = -1;
+    virQEMUSaveDataPtr data = NULL;
+
+    /* We only take subset of virDomainDefFormat flags.  */
+    virCheckFlags(VIR_DOMAIN_XML_SECURE, NULL);
+
+    if (!(vm = qemuDomObjFromDomain(dom)))
+        return ret;
+
+    path = qemuDomainManagedSavePath(driver, vm);
+
+    if (!path)
+        goto cleanup;
+
+    fd = qemuDomainSaveImageOpen(driver, path, &def, &data,
+                                 false, NULL, false, false);
+    if (fd < 0)
+        goto cleanup;
+    if (virDomainManagedSaveGetXMLDescEnsureACL(dom->conn, def, flags) < 0)
+        goto cleanup;
+    ret = qemuDomainDefFormatXML(driver, def, flags);
+
+ cleanup:
+    virQEMUSaveDataFree(data);
+    virDomainDefFree(def);
+    VIR_FORCE_CLOSE(fd);
+    virDomainObjEndAPI(&vm);
+    VIR_FREE(path);
+    return ret;
+}
+
 /* Return 0 on success, 1 if incomplete saved image was silently unlinked,
  * and -1 on failure with error raised.  */
 static int
@@ -20810,6 +20849,7 @@ static virHypervisorDriver qemuHypervisorDriver = {
     .domainManagedSave = qemuDomainManagedSave, /* 0.8.0 */
     .domainHasManagedSaveImage = qemuDomainHasManagedSaveImage, /* 0.8.0 */
     .domainManagedSaveRemove = qemuDomainManagedSaveRemove, /* 0.8.0 */
+    .domainManagedSaveGetXMLDesc = qemuDomainManagedSaveGetXMLDesc, /* 3.5.0 */
     .domainSnapshotCreateXML = qemuDomainSnapshotCreateXML, /* 0.8.0 */
     .domainSnapshotGetXMLDesc = qemuDomainSnapshotGetXMLDesc, /* 0.8.0 */
     .domainSnapshotNum = qemuDomainSnapshotNum, /* 0.8.0 */
-- 
1.8.3.1

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On Wed, Jun 21, 2017 at 05:07:48 +0530, Kothapally Madhu Pavan wrote:
> This commit adds qemu driver implementaion to get xml description
> for managed save state domain.
> 
> Signed-off-by: Kothapally Madhu Pavan <kmp@linux.vnet.ibm.com>
> ---
>  src/qemu/qemu_driver.c | 40 ++++++++++++++++++++++++++++++++++++++++
>  1 file changed, 40 insertions(+)
> 
> diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
> index e91663c..c9b3ef3 100644
> --- a/src/qemu/qemu_driver.c
> +++ b/src/qemu/qemu_driver.c
> @@ -6798,6 +6798,45 @@ qemuDomainSaveImageDefineXML(virConnectPtr conn, const char *path,
>      return ret;
>  }
>  
> +static char *
> +qemuDomainManagedSaveGetXMLDesc(virDomainPtr dom, unsigned int flags)
> +{
> +    virQEMUDriverPtr driver = dom->conn->privateData;
> +    virDomainObjPtr vm;
> +    char *path = NULL;
> +    char *ret = NULL;
> +    virDomainDefPtr def = NULL;
> +    int fd = -1;
> +    virQEMUSaveDataPtr data = NULL;
> +
> +    /* We only take subset of virDomainDefFormat flags.  */
> +    virCheckFlags(VIR_DOMAIN_XML_SECURE, NULL);
> +
> +    if (!(vm = qemuDomObjFromDomain(dom)))
> +        return ret;
> +
> +    path = qemuDomainManagedSavePath(driver, vm);
> +
> +    if (!path)
> +        goto cleanup;
> +
> +    fd = qemuDomainSaveImageOpen(driver, path, &def, &data,
> +                                 false, NULL, false, false);
> +    if (fd < 0)

This will report a horrible error message in case when the VM is not
manage-saved. You need to check whether the file exists and report a
better one. 

(error message will be reported by qemuOpenFileAs, thus will be
Failed to open file '%s')
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On 06/21/2017 01:05 PM, Peter Krempa wrote:
> On Wed, Jun 21, 2017 at 05:07:48 +0530, Kothapally Madhu Pavan wrote:
>> This commit adds qemu driver implementaion to get xml description
>> for managed save state domain.
>>
>> Signed-off-by: Kothapally Madhu Pavan <kmp@linux.vnet.ibm.com>
>> ---
>>   src/qemu/qemu_driver.c | 40 ++++++++++++++++++++++++++++++++++++++++
>>   1 file changed, 40 insertions(+)
>>
>> diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
>> index e91663c..c9b3ef3 100644
>> --- a/src/qemu/qemu_driver.c
>> +++ b/src/qemu/qemu_driver.c
>> @@ -6798,6 +6798,45 @@ qemuDomainSaveImageDefineXML(virConnectPtr conn, const char *path,
>>       return ret;
>>   }
>>   
>> +static char *
>> +qemuDomainManagedSaveGetXMLDesc(virDomainPtr dom, unsigned int flags)
>> +{
>> +    virQEMUDriverPtr driver = dom->conn->privateData;
>> +    virDomainObjPtr vm;
>> +    char *path = NULL;
>> +    char *ret = NULL;
>> +    virDomainDefPtr def = NULL;
>> +    int fd = -1;
>> +    virQEMUSaveDataPtr data = NULL;
>> +
>> +    /* We only take subset of virDomainDefFormat flags.  */
>> +    virCheckFlags(VIR_DOMAIN_XML_SECURE, NULL);
>> +
>> +    if (!(vm = qemuDomObjFromDomain(dom)))
>> +        return ret;
>> +
>> +    path = qemuDomainManagedSavePath(driver, vm);
>> +
>> +    if (!path)
>> +        goto cleanup;
>> +
>> +    fd = qemuDomainSaveImageOpen(driver, path, &def, &data,
>> +                                 false, NULL, false, false);
>> +    if (fd < 0)
> This will report a horrible error message in case when the VM is not
> manage-saved. You need to check whether the file exists and report a
> better one.
>
> (error message will be reported by qemuOpenFileAs, thus will be
> Failed to open file '%s')
Thanks for the comments. Fixing it in the next version.

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