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Basic framework for lock manager plugins

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Define the basic framework lock manager plugins. The
basic plugin API for 3rd parties to implemented is
defined in

  src/locking/lock_driver.h

This allows dlopen()able modules for alternative locking
schemes, however, we do not install the header. This
requires lock plugins to be in-tree allowing changing of
the lock manager plugin API in future.

The libvirt code for loading & calling into plugins
is in

  src/locking/lock_manager.{c,h}

* include/libvirt/virterror.h, src/util/virterror.c: Add
  VIR_FROM_LOCKING
* src/locking/lock_driver.h: API for lock driver plugins
  to implement
* src/locking/lock_manager.c, src/locking/lock_manager.h:
  Internal API for managing locking
* src/Makefile.am: Add locking code
This commit is contained in:
Daniel P. Berrange
2010-09-13 14:02:58 +01:00
parent 1ea83207c8
commit 6a943419c5
9 changed files with 894 additions and 1 deletions
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1
include/libvirt/virterror.h
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@@ -81,6 +81,7 @@ typedef enum {
VIR_FROM_VMWARE = 39, /* Error from VMware driver */
VIR_FROM_EVENT = 40, /* Error from event loop impl */
VIR_FROM_LIBXL = 41, /* Error from libxenlight driver */
VIR_FROM_LOCKING = 42, /* Error from lock manager */
} virErrorDomain;