unsigned long unique;
} cm_fid_t;
-#if 0
-typedef struct cm_accessCache {
- osi_queue_t q; /* queue header */
- struct cm_user *userp; /* user having access rights */
- unsigned long rights; /* rights */
-} cm_accessCache_t;
-#endif
-
/* Key used for byte range locking. Each unique key identifies a
unique client per cm_scache_t for the purpose of locking. */
typedef afs_uint64 cm_key_t;
#define CM_FILELOCK_FLAG_WAITLOCK 0x04
#define CM_FILELOCK_FLAG_WAITUNLOCK 0x0C
-#define CM_FILELOCK_FLAG_CLIENTONLY 0x100
+/* the following is used to indicate that there are no server side
+ locks associated with this lock. This is true for locks obtained
+ against files in RO volumes as well as files residing on servers
+ that disable client side byte range locking. */
+#define CM_FILELOCK_FLAG_CLIENTONLY 0x10
+
+#define CM_FLSHARE_OFFSET_HIGH 0x01000000
+#define CM_FLSHARE_OFFSET_LOW 0x00000000
+#define CM_FLSHARE_LENGTH_HIGH 0x00000000
+#define CM_FLSHARE_LENGTH_LOW 0x00000001
typedef struct cm_prefetch { /* last region scanned for prefetching */
osi_hyper_t base; /* start of region */
#define CM_SCACHE_MAGIC ('S' | 'C'<<8 | 'A'<<16 | 'C'<<24)
typedef struct cm_scache {
- osi_queue_t q; /* lru queue; cm_scacheLock */
- afs_uint32 magic;
- struct cm_scache *nextp; /* next in hash; cm_scacheLock */
- cm_fid_t fid;
- afs_uint32 flags; /* flags; locked by mx */
-
- /* synchronization stuff */
- osi_mutex_t mx; /* mutex for this structure */
- osi_rwlock_t bufCreateLock; /* read-locked during buffer creation;
- * write-locked to prevent buffers from
- * being created during a truncate op, etc.
- */
- afs_uint32 refCount; /* reference count; cm_scacheLock */
- osi_queueData_t *bufReadsp; /* queue of buffers being read */
- osi_queueData_t *bufWritesp; /* queue of buffers being written */
-
- /* parent info for ACLs */
- afs_uint32 parentVnode; /* parent vnode for ACL callbacks */
- afs_uint32 parentUnique; /* for ACL callbacks */
-
- /* local modification stat */
- afs_uint32 mask; /* for clientModTime, length and
- * truncPos */
-
- /* file status */
- afs_uint32 fileType; /* file type */
- time_t clientModTime; /* mtime */
- time_t serverModTime; /* at server, for concurrent call
- * comparisons */
- osi_hyper_t length; /* file length */
- cm_prefetch_t prefetch; /* prefetch info structure */
- afs_uint32 unixModeBits; /* unix protection mode bits */
- afs_uint32 linkCount; /* link count */
- afs_uint32 dataVersion; /* data version */
- afs_uint32 owner; /* file owner */
- afs_uint32 group; /* file owning group */
-
- /* pseudo file status */
- osi_hyper_t serverLength; /* length known to server */
-
- /* aux file status */
- osi_hyper_t truncPos; /* file size to truncate to before
- * storing data */
-
- /* symlink and mount point info */
- char mountPointStringp[MOUNTPOINTLEN]; /* the string stored in a mount point;
- * first char is type, then vol name.
+ osi_queue_t q; /* lru queue; cm_scacheLock */
+ afs_uint32 magic;
+ struct cm_scache *nextp; /* next in hash; cm_scacheLock */
+ cm_fid_t fid;
+ afs_uint32 flags; /* flags; locked by mx */
+
+ /* synchronization stuff */
+ osi_mutex_t mx; /* mutex for this structure */
+ osi_rwlock_t bufCreateLock; /* read-locked during buffer creation;
+ * write-locked to prevent buffers from
+ * being created during a truncate op, etc.
+ */
+ afs_uint32 refCount; /* reference count; cm_scacheLock */
+ osi_queueData_t *bufReadsp; /* queue of buffers being read */
+ osi_queueData_t *bufWritesp; /* queue of buffers being written */
+
+ /* parent info for ACLs */
+ afs_uint32 parentVnode; /* parent vnode for ACL callbacks */
+ afs_uint32 parentUnique; /* for ACL callbacks */
+
+ /* local modification stat */
+ afs_uint32 mask; /* for clientModTime, length and
+ * truncPos */
+
+ /* file status */
+ afs_uint32 fileType; /* file type */
+ time_t clientModTime; /* mtime */
+ time_t serverModTime; /* at server, for concurrent call
+ * comparisons */
+ osi_hyper_t length; /* file length */
+ cm_prefetch_t prefetch; /* prefetch info structure */
+ afs_uint32 unixModeBits; /* unix protection mode bits */
+ afs_uint32 linkCount; /* link count */
+ afs_uint32 dataVersion; /* data version */
+ afs_uint32 owner; /* file owner */
+ afs_uint32 group; /* file owning group */
+ cm_user_t *creator; /* user, if new file */
+
+ /* pseudo file status */
+ osi_hyper_t serverLength; /* length known to server */
+
+ /* aux file status */
+ osi_hyper_t truncPos; /* file size to truncate to before
+ * storing data */
+
+ /* symlink and mount point info */
+ char mountPointStringp[MOUNTPOINTLEN]; /* the string stored in a mount point;
+ * first char is type, then vol name.
* If this is a normal symlink, we store
* the link contents here.
*/
- cm_fid_t mountRootFid; /* mounted on root */
- time_t mountRootGen; /* time to update mountRootFidp? */
- cm_fid_t dotdotFid; /* parent of volume root */
+ cm_fid_t mountRootFid; /* mounted on root */
+ time_t mountRootGen; /* time to update mountRootFidp? */
+ cm_fid_t dotdotFid; /* parent of volume root */
- /* callback info */
- struct cm_server *cbServerp; /* server granting callback */
- time_t cbExpires; /* time callback expires */
+ /* callback info */
+ struct cm_server *cbServerp; /* server granting callback */
+ time_t cbExpires; /* time callback expires */
- /* access cache */
- long anyAccess; /* anonymous user's access */
- struct cm_aclent *randomACLp; /* access cache entries */
+ /* access cache */
+ long anyAccess; /* anonymous user's access */
+ struct cm_aclent *randomACLp; /* access cache entries */
/* file locks */
afs_int32 serverLock; /* current lock we have acquired on
* this file. One of (-1), LockRead
* or LockWrite. [protected by
- * scp->mx]
+ * scp->mx]. In the future, this
+ * should be replaced by a queue of
+ * cm_server_lock_t objects which keep
+ * track of lock type, the user for
+ * whom the lock was obtained, the
+ * dataVersion at the time the lock
+ * was asserted last, lastRefreshCycle
+ * and lateUpdateTime.
*/
unsigned long lastRefreshCycle; /* protected with cm_scacheLock
* for all scaches. */
+ afs_uint32 lockDataVersion; /* dataVersion of the scp at the time
+ the server lock for the scp was
+ asserted for this lock the last
+ time. */
osi_queue_t *fileLocksH; /* queue of locks (head) */
osi_queue_t *fileLocksT; /* queue of locks (tail) */
+
afs_uint32 sharedLocks; /* number of shared locks on
- * ::fileLocks */
+ * ::fileLocks. This count does not
+ * include locks which have
+ * CM_FILELOCK_FLAG_CLIENTONLY set. */
+
afs_uint32 exclusiveLocks; /* number of exclusive locks on
- * ::fileLocks
+ * ::fileLocks. This count does not
+ * include locks which have
+ * CM_FILELOCK_FLAG_CLIENTONLY set.
*/
+
+ afs_uint32 clientLocks; /* number of locks on ::fileLocks that
+ have CM_FILELOCK_FLAG_CLIENTONLY
+ set. */
- /* volume info */
- struct cm_volume *volp; /* volume info; held reference */
-
- /* bulk stat progress */
- osi_hyper_t bulkStatProgress; /* track bulk stats of large dirs */
-
- /* open state */
- afs_uint16 openReads; /* open for reading */
- afs_uint16 openWrites; /* open for writing */
- afs_uint16 openShares; /* open for read excl */
- afs_uint16 openExcls; /* open for exclusives */
-
- /* syncop state */
- afs_uint32 waitCount; /* number of threads waiting */
- afs_uint32 waitRequests; /* num of thread wait requests */
+ /* volume info */
+ struct cm_volume *volp; /* volume info; held reference */
+
+ /* bulk stat progress */
+ osi_hyper_t bulkStatProgress; /* track bulk stats of large dirs */
+
+ /* open state */
+ afs_uint16 openReads; /* open for reading */
+ afs_uint16 openWrites; /* open for writing */
+ afs_uint16 openShares; /* open for read excl */
+ afs_uint16 openExcls; /* open for exclusives */
+
+ /* syncop state */
+ afs_uint32 waitCount; /* number of threads waiting */
+ afs_uint32 waitRequests; /* num of thread wait requests */
} cm_scache_t;
/* mask field - tell what has been modified */
#define CM_SCACHEFLAG_ANYWATCH \
(CM_SCACHEFLAG_WATCHED | CM_SCACHEFLAG_WATCHEDSUBTREE)
+#define CM_SCACHEFLAG_EACCESS 0x200000 /* Bulk Stat returned EACCES */
+
/* sync flags for calls to the server. The CM_SCACHEFLAG_FETCHING,
* CM_SCACHEFLAG_STORING and CM_SCACHEFLAG_SIZESTORING flags correspond to the
* below, except for FETCHDATA and STOREDATA, which correspond to non-null
#define CM_SCACHESYNC_NOWAIT 0x100000/* don't wait for the state,
* just fail */
+/* flags for cm_RecycleSCache */
+#define CM_SCACHE_RECYCLEFLAG_DESTROY_BUFFERS 0x1
+
/* flags for cm_MergeStatus */
#define CM_MERGEFLAG_FORCE 1 /* check mtime before merging;
* used to see if we're merging
extern int cm_FidCmp(cm_fid_t *, cm_fid_t *);
extern long cm_SyncOp(cm_scache_t *, struct cm_buf *, struct cm_user *,
- struct cm_req *, long, long);
+ struct cm_req *, afs_uint32, afs_uint32);
-extern void cm_SyncOpDone(cm_scache_t *, struct cm_buf *, long);
+extern void cm_SyncOpDone(cm_scache_t *, struct cm_buf *, afs_uint32);
extern void cm_MergeStatus(cm_scache_t *, struct AFSFetchStatus *, struct AFSVolSync *,
- struct cm_user *, int flags);
+ struct cm_user *, afs_uint32 flags);
extern void cm_AFSFidFromFid(struct AFSFid *, cm_fid_t *);
extern cm_scache_t *cm_FindSCache(cm_fid_t *fidp);
+extern cm_scache_t *cm_FindSCacheParent(cm_scache_t *);
+
extern osi_rwlock_t cm_scacheLock;
extern osi_queue_t *cm_allFileLocks;
extern long cm_ShutdownSCache(void);
+extern long cm_RecycleSCache(cm_scache_t *scp, afs_int32 flags);
+
#endif /* __CM_SCACHE_H_ENV__ */