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