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From b6e9c0ad8d498d5f50ca0aa4f05530709349adea Mon Sep 17 00:00:00 2001
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From: "Richard W.M. Jones" <rjones@redhat.com>
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Date: Wed, 27 Oct 2021 11:57:35 +0100
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Subject: [PATCH] vddk: Add read, write and wait asynchronous functions
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These functions added in VDDK 6.0 - 6.5 implement asynchronous read
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and write.
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Acked-by: Laszlo Ersek <lersek@redhat.com>
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(cherry picked from commit ad53e7becafed6ca3573795a79c534281fe9c274)
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---
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plugins/vddk/vddk-structs.h | 3 +++
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plugins/vddk/vddk-stubs.h | 19 ++++++++++++++++++-
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2 files changed, 21 insertions(+), 1 deletion(-)
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diff --git a/plugins/vddk/vddk-structs.h b/plugins/vddk/vddk-structs.h
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index aeb5bfd0..e97f017c 100644
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--- a/plugins/vddk/vddk-structs.h
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+++ b/plugins/vddk/vddk-structs.h
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@@ -43,6 +43,7 @@
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typedef uint64_t VixError;
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#define VIX_OK 0
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+#define VIX_ASYNC 25000
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#define VIXDISKLIB_FLAG_OPEN_UNBUFFERED 1
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#define VIXDISKLIB_FLAG_OPEN_SINGLE_LINK 2
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@@ -61,6 +62,8 @@ typedef void *VixDiskLibHandle;
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typedef void VixDiskLibGenericLogFunc (const char *fmt, va_list args);
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+typedef void (*VixDiskLibCompletionCB) (void *data, VixError result);
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+
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enum VixDiskLibCredType {
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VIXDISKLIB_CRED_UID = 1,
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VIXDISKLIB_CRED_SESSIONID = 2,
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diff --git a/plugins/vddk/vddk-stubs.h b/plugins/vddk/vddk-stubs.h
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index a94df9cd..66353691 100644
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--- a/plugins/vddk/vddk-stubs.h
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+++ b/plugins/vddk/vddk-stubs.h
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@@ -103,10 +103,27 @@ STUB (VixDiskLib_Write,
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uint64_t start_sector, uint64_t nr_sectors,
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const unsigned char *buf));
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-/* Added in VDDK 6.0, this will be NULL in earlier versions. */
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+/* Added in VDDK 6.0, these will be NULL in earlier versions. */
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OPTIONAL_STUB (VixDiskLib_Flush,
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VixError,
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(VixDiskLibHandle handle));
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+OPTIONAL_STUB (VixDiskLib_ReadAsync,
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+ VixError,
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+ (VixDiskLibHandle handle,
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+ uint64_t start_sector, uint64_t nr_sectors,
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+ unsigned char *buf,
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+ VixDiskLibCompletionCB callback, void *data));
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+OPTIONAL_STUB (VixDiskLib_WriteAsync,
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+ VixError,
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+ (VixDiskLibHandle handle,
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+ uint64_t start_sector, uint64_t nr_sectors,
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+ const unsigned char *buf,
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+ VixDiskLibCompletionCB callback, void *data));
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+
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+/* Added in VDDK 6.5, this will be NULL in earlier versions. */
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+OPTIONAL_STUB (VixDiskLib_Wait,
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+ VixError,
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+ (VixDiskLibHandle handle));
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/* Added in VDDK 6.7, these will be NULL for earlier versions: */
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OPTIONAL_STUB (VixDiskLib_QueryAllocatedBlocks,
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--
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2.31.1
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