include/scsi/pr-manager.h

   1 #ifndef PR_MANAGER_H
   2 #define PR_MANAGER_H
   3
   4 #include "qom/object.h"
   5 #include "qapi/qmp/qdict.h"
   6 #include "qapi/visitor.h"
   7 #include "qom/object_interfaces.h"
   8 #include "block/aio.h"
   9
  10 #define TYPE_PR_MANAGER "pr-manager"
  11
  12 #define PR_MANAGER_CLASS(klass) \
  13      OBJECT_CLASS_CHECK(PRManagerClass, (klass), TYPE_PR_MANAGER)
  14 #define PR_MANAGER_GET_CLASS(obj) \
  15      OBJECT_GET_CLASS(PRManagerClass, (obj), TYPE_PR_MANAGER)
  16 #define PR_MANAGER(obj) \
  17      OBJECT_CHECK(PRManager, (obj), TYPE_PR_MANAGER)
  18
  19 struct sg_io_hdr;
  20
  21 typedef struct PRManager {
  22     /* <private> */
  23     Object parent;
  24 } PRManager;
  25
  26 /**
  27  * PRManagerClass:
  28  * @parent_class: the base class
  29  * @run: callback invoked in thread pool context
  30  */
  31 typedef struct PRManagerClass {
  32     /* <private> */
  33     ObjectClass parent_class;
  34
  35     /* <public> */
  36     int (*run)(PRManager *pr_mgr, int fd, struct sg_io_hdr *hdr);
  37 } PRManagerClass;
  38
  39 BlockAIOCB *pr_manager_execute(PRManager *pr_mgr,
  40                                AioContext *ctx, int fd,
  41                                struct sg_io_hdr *hdr,
  42                                BlockCompletionFunc *complete,
  43                                void *opaque);
  44
  45 #ifdef CONFIG_LINUX
  46 PRManager *pr_manager_lookup(const char *id, Error **errp);
  47 #else
  48 static inline PRManager *pr_manager_lookup(const char *id, Error **errp)
  49 {
  50     /* The classes do not exist at all!  */
  51     error_setg(errp, "No persistent reservation manager with id '%s'", id);
  52     return NULL;
  53 }
  54 #endif
  55
  56 #endif