[Libguestfs] [PATCH nbdkit v2 2/5] vddk: Cache the disk size in the handle

[Richard W.M. Jones]

No functional change here, we're just making sure we have the disk
size (in bytes) available in the handle.
---
 plugins/vddk/vddk.h | 3 +++
 plugins/vddk/vddk.c | 6 +++---
 2 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/plugins/vddk/vddk.h b/plugins/vddk/vddk.h
index fb0c79a838..1d1069ccdf 100644
--- a/plugins/vddk/vddk.h
+++ b/plugins/vddk/vddk.h
@@ -165,6 +165,9 @@ struct vddk_handle {
   command_queue commands;          /* command queue */
   pthread_cond_t commands_cond;    /* condition (queue size 0 -> 1) */
   uint64_t id;                     /* next command ID */
+
+  /* Cached disk size in bytes (set in get_size()). */
+  uint64_t size;
 };
 
 /* reexec.c */
diff --git a/plugins/vddk/vddk.c b/plugins/vddk/vddk.c
index 43400f8530..1de356d883 100644
--- a/plugins/vddk/vddk.c
+++ b/plugins/vddk/vddk.c
@@ -889,19 +889,19 @@ vddk_get_size (void *handle)
 {
   struct vddk_handle *h = handle;
   VixDiskLibInfo *info;
-  int64_t size;
   struct command info_cmd = { .type = INFO, .ptr = &info };
 
   if (send_command_and_wait (h, &info_cmd) == -1)
     return -1;
 
-  size = info->capacity * (int64_t)VIXDISKLIB_SECTOR_SIZE;
+  /* Compute the size and cache it into the handle. */
+  h->size = info->capacity * VIXDISKLIB_SECTOR_SIZE;
 
   VDDK_CALL_START (VixDiskLib_FreeInfo, "info")
     VixDiskLib_FreeInfo (info);
   VDDK_CALL_END (VixDiskLib_FreeInfo, 0);
 
-  return size;
+  return h->size;
 }
 
 /* Advertise most efficient block sizes. */
-- 
2.46.0
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