Re: [libvirt] [PATCH] esx: Rework datastore path parsing and handling

[Eric Blake]

On 08/26/2010 04:37 PM, Matthias Bolte wrote:
Instead of splitting the path part of a datastore path into
directory and file name, keep this in one piece. An example:
   "[datastore] directory/file"

was split into this before:

   datastoreName = "datastore"
   directoryName = "directory"
   fileName = "file"

Now it's split into this:

   datastoreName = "datastore"
   directoryName = "directory"
   directoryAndFileName = "directory/file"

Seems reasonable.

This simplifies code using esxUtil_ParseDatastorePath, because
directoryAndFileName is used more often than fileName. Also the
old approach expected the datastore path to reference a actual

s/ a / an /

@@ -52,8 +52,7 @@ typedef struct _esxVMX_Data esxVMX_Data;

  struct _esxVMX_Data {
      esxVI_Context *ctx;
-    const char *datastoreName;
-    const char *directoryName;
+    char *datastorePathWithoutFileName;

I guess losing the const here is okay.

@@ -2612,8 +2608,9 @@ esxDomainDumpXML(virDomainPtr domain, int flags)
      esxVI_ObjectContent_Free(&virtualMachine);
      VIR_FREE(datastoreName);
      VIR_FREE(directoryName);
-    VIR_FREE(fileName);
+    VIR_FREE(directoryAndFileName);
      VIR_FREE(url);
+    VIR_FREE(data.datastorePathWithoutFileName);
      VIR_FREE(vmx);
      virDomainDefFree(def);

@@ -2640,8 +2637,7 @@ esxDomainXMLFromNative(virConnectPtr conn, const char 
*nativeFormat,
      }

      data.ctx = priv->primary;
-    data.datastoreName = "?";
-    data.directoryName = "?";
+    data.datastorePathWithoutFileName = (char *)"[?] ?";

Are you missing a strdup() here?  I'm worried that the 
VIR_FREE(data.datastorePathWithoutFileName) in esxDomainDumpXML will now 
try to free static storage.

diff --git a/src/esx/esx_storage_driver.c b/src/esx/esx_storage_driver.c
index af8876a..d2d8f22 100644
--- a/src/esx/esx_storage_driver.c
+++ b/src/esx/esx_storage_driver.c
@@ -611,10 +611,8 @@ esxStoragePoolListStorageVolumes(virStoragePoolPtr pool, 
char **const names,
      esxVI_HostDatastoreBrowserSearchResults *searchResultsList = NULL;
      esxVI_HostDatastoreBrowserSearchResults *searchResults = NULL;
      esxVI_FileInfo *fileInfo = NULL;
-    char *datastoreName = NULL;
-    char *directoryName = NULL;
-    char *fileName = NULL;
-    char *prefix = NULL;
+    char *directoryAndFileName = NULL;
+    int length;

s/int/size_t/

+++ b/src/esx/esx_vi.c
@@ -2946,7 +2946,9 @@ esxVI_LookupFileInfoByDatastorePath(esxVI_Context *ctx,
      int result = -1;
      char *datastoreName = NULL;
      char *directoryName = NULL;
+    char *directoryAndFileName = NULL;
      char *fileName = NULL;
+    int length;

s/int/size_t/

--
Eric Blake   ebl...@redhat.com    +1-801-349-2682
Libvirt virtualization library http://libvirt.org

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