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88 lines
2.5 KiB
C
88 lines
2.5 KiB
C
/*
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CUSE: Character device in Userspace
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Copyright (C) 2008-2009 SUSE Linux Products GmbH
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Copyright (C) 2008-2009 Tejun Heo <tj@kernel.org>
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This program can be distributed under the terms of the GNU LGPLv2.
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See the file COPYING.LIB.
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Read example/cusexmp.c for usages.
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*/
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#ifndef CUSE_LOWLEVEL_H_
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#define CUSE_LOWLEVEL_H_
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#ifndef FUSE_USE_VERSION
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#define FUSE_USE_VERSION 29
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#endif
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#include "fuse_lowlevel.h"
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#include <fcntl.h>
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#include <sys/types.h>
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#include <sys/uio.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define CUSE_UNRESTRICTED_IOCTL (1 << 0) /* use unrestricted ioctl */
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struct fuse_session;
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struct cuse_info {
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unsigned dev_major;
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unsigned dev_minor;
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unsigned dev_info_argc;
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const char **dev_info_argv;
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unsigned flags;
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};
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/*
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* Most ops behave almost identically to the matching fuse_lowlevel
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* ops except that they don't take @ino.
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*
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* init_done : called after initialization is complete
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* read/write : always direct IO, simultaneous operations allowed
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* ioctl : might be in unrestricted mode depending on ci->flags
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*/
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struct cuse_lowlevel_ops {
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void (*init) (void *userdata, struct fuse_conn_info *conn);
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void (*init_done) (void *userdata);
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void (*destroy) (void *userdata);
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void (*open) (fuse_req_t req, struct fuse_file_info *fi);
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void (*read) (fuse_req_t req, size_t size, off_t off,
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struct fuse_file_info *fi);
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void (*write) (fuse_req_t req, const char *buf, size_t size, off_t off,
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struct fuse_file_info *fi);
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void (*flush) (fuse_req_t req, struct fuse_file_info *fi);
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void (*release) (fuse_req_t req, struct fuse_file_info *fi);
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void (*fsync) (fuse_req_t req, int datasync, struct fuse_file_info *fi);
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void (*ioctl) (fuse_req_t req, int cmd, void *arg,
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struct fuse_file_info *fi, unsigned int flags,
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const void *in_buf, size_t in_bufsz, size_t out_bufsz);
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void (*poll) (fuse_req_t req, struct fuse_file_info *fi,
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struct fuse_pollhandle *ph);
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};
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struct fuse_session *cuse_lowlevel_new(struct fuse_args *args,
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const struct cuse_info *ci,
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const struct cuse_lowlevel_ops *clop,
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void *userdata);
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struct fuse_session *cuse_lowlevel_setup(int argc, char *argv[],
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const struct cuse_info *ci,
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const struct cuse_lowlevel_ops *clop,
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int *multithreaded, void *userdata);
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void cuse_lowlevel_teardown(struct fuse_session *se);
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int cuse_lowlevel_main(int argc, char *argv[], const struct cuse_info *ci,
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const struct cuse_lowlevel_ops *clop, void *userdata);
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#ifdef __cplusplus
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}
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#endif
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#endif /* CUSE_LOWLEVEL_H_ */
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