src/afs/discon.h

   1 #ifndef _DISCON_H
   2 #define _DISCON_H
   3
   4 #ifndef AFS_DISCON_ENV
   5 #define AFS_IS_DISCONNECTED 0
   6 #define AFS_IS_LOGGING 0
   7 #define AFS_IS_DISCON_RW 0
   8 #define AFS_IN_SYNC 0
   9 #define AFS_DISCON_LOCK()
  10 #define AFS_DISCON_UNLOCK()
  11
  12 #define AFS_DISCON_ADD_DIRTY(avc)
  13
  14 #else
  15
  16 extern afs_int32    afs_is_disconnected;
  17 extern afs_int32    afs_is_logging;
  18 extern afs_int32    afs_is_discon_rw;
  19 extern afs_int32    afs_in_sync;
  20 extern afs_rwlock_t afs_discon_lock;
  21
  22 extern struct vcache *afs_DDirtyVCList;
  23 extern struct vcache *afs_DDirtyVCListStart;
  24 extern struct vcache *afs_DDirtyVCListPrev;
  25 extern afs_rwlock_t afs_DDirtyVCListLock;
  26 extern afs_int32 afs_ConflictPolicy;
  27
  28 extern void afs_RemoveAllConns();
  29 extern afs_uint32 afs_DisconVnode; /* XXX: not protected. */
  30
  31 /* For afs_GenFakeFid. */
  32 extern struct vcache *afs_FindVCache(struct VenusFid *afid,
  33                                         afs_int32 *retry,
  34                                         afs_int32 flag);
  35
  36 extern int afs_WriteVCacheDiscon(register struct vcache *avc,
  37                                         register struct AFSStoreStatus *astatus,
  38                                         struct vattr *attrs);
  39 extern int afs_ResyncDisconFiles(struct vrequest *areq,
  40                                         struct AFS_UCRED *acred);
  41 extern void afs_RemoveAllConns();
  42 extern void afs_GenFakeFid(struct VenusFid *afid, afs_uint32 avtype);
  43 extern void afs_GenShadowFid(struct VenusFid *afid);
  44 extern void afs_GenDisconStatus(struct vcache *adp,
  45                                         struct vcache *avc,
  46                                         struct VenusFid *afid,
  47                                         struct vattr *attrs,
  48                                         struct vrequest *areq,
  49                                         int file_type);
  50 extern int afs_HashOutDCache(struct dcache *adc, int zap);
  51 extern int afs_MakeShadowDir(struct vcache *avc);
  52 extern void afs_DeleteShadowDir(struct vcache *avc);
  53 extern struct dcache *afs_FindDCacheByFid(register struct VenusFid *afid);
  54 extern void afs_UpdateStatus(struct vcache *avc,
  55                                         struct VenusFid *afid,
  56                                         struct vrequest *areq,
  57                                         struct AFSFetchStatus *Outsp,
  58                                         struct AFSCallBack *acb,
  59                                         afs_uint32 start);
  60 extern void afs_RemoveAllConns();
  61
  62 #define AFS_IS_DISCONNECTED (afs_is_disconnected)
  63 #define AFS_IS_LOGGING (afs_is_logging)
  64 #define AFS_IS_DISCON_RW (afs_is_discon_rw)
  65 #define AFS_IN_SYNC (afs_in_sync)
  66 #define AFS_DISCON_LOCK() ObtainReadLock(&afs_discon_lock)
  67 #define AFS_DISCON_UNLOCK() ReleaseReadLock(&afs_discon_lock)
  68
  69 #define AFS_DISCON_ADD_DIRTY(avc)                               \
  70 do {                                                            \
  71     if (!afs_DDirtyVCListStart) {                               \
  72         afs_DDirtyVCListStart = afs_DDirtyVCList = avc;         \
  73     } else {                                                    \
  74         afs_DDirtyVCList->ddirty_next = avc;                    \
  75         afs_DDirtyVCList = avc;                                 \
  76     }                                                           \
  77 } while(0);
  78
  79 #endif /* AFS_DISCON_ENV */
  80 #endif /* _DISCON_H */