diff options
Diffstat (limited to 'fs/fuse/fuse_i.h')
| -rw-r--r-- | fs/fuse/fuse_i.h | 42 |
1 files changed, 41 insertions, 1 deletions
diff --git a/fs/fuse/fuse_i.h b/fs/fuse/fuse_i.h index 1902148281cc..8c13865955d4 100644 --- a/fs/fuse/fuse_i.h +++ b/fs/fuse/fuse_i.h @@ -355,6 +355,39 @@ struct fuse_req { }; +struct fuse_iqueue; + +/** + * Input queue callbacks + * + * Input queue signalling is device-specific. For example, the /dev/fuse file + * uses fiq->waitq and fasync to wake processes that are waiting on queue + * readiness. These callbacks allow other device types to respond to input + * queue activity. + */ +struct fuse_iqueue_ops { + /** + * Signal that a forget has been queued + */ + void (*wake_forget_and_unlock)(struct fuse_iqueue *fiq) + __releases(fiq->lock); + + /** + * Signal that an INTERRUPT request has been queued + */ + void (*wake_interrupt_and_unlock)(struct fuse_iqueue *fiq) + __releases(fiq->lock); + + /** + * Signal that a request has been queued + */ + void (*wake_pending_and_unlock)(struct fuse_iqueue *fiq) + __releases(fiq->lock); +}; + +/** /dev/fuse input queue operations */ +extern const struct fuse_iqueue_ops fuse_dev_fiq_ops; + struct fuse_iqueue { /** Connection established */ unsigned connected; @@ -383,6 +416,12 @@ struct fuse_iqueue { /** O_ASYNC requests */ struct fasync_struct *fasync; + + /** Device-specific callbacks */ + const struct fuse_iqueue_ops *ops; + + /** Device-specific state */ + void *priv; }; #define FUSE_PQ_HASH_BITS 8 @@ -882,7 +921,8 @@ struct fuse_conn *fuse_conn_get(struct fuse_conn *fc); /** * Initialize fuse_conn */ -void fuse_conn_init(struct fuse_conn *fc, struct user_namespace *user_ns); +void fuse_conn_init(struct fuse_conn *fc, struct user_namespace *user_ns, + const struct fuse_iqueue_ops *fiq_ops, void *fiq_priv); /** * Release reference to fuse_conn |