diff options
Diffstat (limited to 'include/fuse_lowlevel.h')
| -rw-r--r-- | include/fuse_lowlevel.h | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/include/fuse_lowlevel.h b/include/fuse_lowlevel.h index 6bad70e..ff0d966 100644 --- a/include/fuse_lowlevel.h +++ b/include/fuse_lowlevel.h @@ -127,6 +127,17 @@ struct fuse_forget_data { uint64_t nlookup; }; +struct fuse_custom_io { + ssize_t (*writev)(int fd, struct iovec *iov, int count, void *userdata); + ssize_t (*read)(int fd, void *buf, size_t buf_len, void *userdata); + ssize_t (*splice_receive)(int fdin, __off64_t *offin, int fdout, + __off64_t *offout, size_t len, + unsigned int flags, void *userdata); + ssize_t (*splice_send)(int fdin, __off64_t *offin, int fdout, + __off64_t *offout, size_t len, + unsigned int flags, void *userdata); +}; + /** * Flags for fuse_lowlevel_notify_expire_entry() * 0 = invalidate entry @@ -1995,6 +2006,36 @@ struct fuse_session *fuse_session_new(struct fuse_args *args, size_t op_size, void *userdata); /** + * Set a file descriptor for the session. + * + * This function can be used if you want to have a custom communication + * interface instead of using a mountpoint. In practice, this means that instead + * of calling fuse_session_mount() and fuse_session_unmount(), one could call + * fuse_session_custom_io() where fuse_session_mount() would have otherwise been + * called. + * + * In `io`, implementations for read and writev MUST be provided. Otherwise -1 + * will be returned and `fd` will not be used. Implementations for `splice_send` + * and `splice_receive` are optional. If they are not provided splice will not + * be used for send or receive respectively. + * + * The provided file descriptor `fd` will be closed when fuse_session_destroy() + * is called. + * + * @param se session object + * @param io Custom io to use when retrieving/sending requests/responses + * @param fd file descriptor for the session + * + * @return 0 on success + * @return -EINVAL if `io`, `io->read` or `ìo->writev` are NULL + * @return -EBADF if `fd` was smaller than 0 + * @return -errno if failed to allocate memory to store `io` + * + **/ +int fuse_session_custom_io(struct fuse_session *se, + const struct fuse_custom_io *io, int fd); + +/** * Mount a FUSE file system. * * @param mountpoint the mount point path |