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c0f817320d
Move a couple of function declarations from fuse_i.h to dev.h and fuse_dev_i.h. Add fuse_conn_get_id() helper that retrieves the connection ID (s_dev) from fuse_conn. With the exception of cuse.c, virtio_fs.c and trace.c source files now either include fuse_i.h or fuse_dev_i/dev_uring_i.h but not both. Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
111 lines
3.4 KiB
C
111 lines
3.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _FS_FUSE_DEV_H
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#define _FS_FUSE_DEV_H
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#include <linux/cleanup.h>
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/** Maximum number of outstanding background requests */
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#define FUSE_DEFAULT_MAX_BACKGROUND 12
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struct fuse_conn;
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struct fuse_chan;
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struct fuse_dev;
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struct fuse_args;
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struct fuse_copy_state;
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struct fuse_backing_map;
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struct file;
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struct folio;
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enum fuse_notify_code;
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struct fuse_chan_param {
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unsigned int minor;
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unsigned int max_write;
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unsigned int max_pages;
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};
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struct fuse_chan *fuse_chan_new(void);
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struct fuse_chan *fuse_dev_chan_new(void);
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void fuse_chan_release(struct fuse_chan *fch);
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void fuse_chan_free(struct fuse_chan *fch);
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unsigned int fuse_chan_num_background(struct fuse_chan *fch);
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unsigned int fuse_chan_max_background(struct fuse_chan *fch);
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void fuse_chan_max_background_set(struct fuse_chan *fch, unsigned int val);
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unsigned int fuse_chan_num_waiting(struct fuse_chan *fch);
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void fuse_chan_set_fc(struct fuse_chan *fch, struct fuse_conn *fc);
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void fuse_chan_set_initialized(struct fuse_chan *fch, struct fuse_chan_param *param);
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void fuse_chan_io_uring_enable(struct fuse_chan *fch);
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ssize_t fuse_chan_send(struct fuse_chan *fch, struct fuse_args *args);
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int fuse_chan_send_bg(struct fuse_chan *fch, struct fuse_args *args, gfp_t gfp_flags);
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int fuse_chan_send_notify_reply(struct fuse_chan *fch, struct fuse_args *args, u64 unique);
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void fuse_chan_resend(struct fuse_chan *fch);
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struct fuse_forget_link *fuse_alloc_forget(void);
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void fuse_chan_queue_forget(struct fuse_chan *fch, struct fuse_forget_link *forget,
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u64 nodeid, u64 nlookup);
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DEFINE_FREE(fuse_chan_free, struct fuse_chan *, if (_T) fuse_chan_free(_T))
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/**
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* Initialize the client device
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*/
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int fuse_dev_init(void);
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/**
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* Cleanup the client device
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*/
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void fuse_dev_cleanup(void);
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void fuse_dev_install(struct fuse_dev *fud, struct fuse_chan *fch);
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bool fuse_dev_verify(struct fuse_dev *fud, struct fuse_chan *fch);
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void fuse_dev_put(struct fuse_dev *fud);
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bool fuse_dev_is_installed(struct fuse_dev *fud);
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bool fuse_dev_is_sync_init(struct fuse_dev *fud);
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struct fuse_dev *fuse_dev_grab(struct file *file);
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void fuse_init_server_timeout(struct fuse_chan *fch, unsigned int timeout);
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/* Abort all requests */
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void fuse_chan_abort(struct fuse_chan *fch, bool abort_with_err);
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void fuse_chan_wait_aborted(struct fuse_chan *fch);
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/**
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* Acquire reference to fuse_conn
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*/
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struct fuse_conn *fuse_conn_get(struct fuse_conn *fc);
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/**
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* Release reference to fuse_conn
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*/
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void fuse_conn_put(struct fuse_conn *fc);
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dev_t fuse_conn_get_id(struct fuse_conn *fc);
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void fuse_end_polls(struct fuse_conn *fc);
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int fuse_notify(struct fuse_conn *fc, enum fuse_notify_code code,
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unsigned int size, struct fuse_copy_state *cs);
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int fuse_backing_open(struct fuse_conn *fc, struct fuse_backing_map *map);
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int fuse_backing_close(struct fuse_conn *fc, int backing_id);
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int fuse_copy_one(struct fuse_copy_state *cs, void *val, unsigned size);
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int fuse_copy_folio(struct fuse_copy_state *cs, struct folio **foliop,
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unsigned offset, unsigned count, int zeroing);
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void fuse_copy_finish(struct fuse_copy_state *cs);
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#ifdef CONFIG_FUSE_IO_URING
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bool fuse_uring_enabled(void);
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void fuse_uring_destruct(struct fuse_chan *fch);
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#else /* CONFIG_FUSE_IO_URING */
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static inline bool fuse_uring_enabled(void)
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{
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return false;
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}
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static inline void fuse_uring_destruct(struct fuse_chan *fch)
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{
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}
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#endif /* CONFIG_FUSE_IO_URING */
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#endif /* _FS_FUSE_DEV_H */
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