132 lines
4 KiB
C
132 lines
4 KiB
C
/*
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* Copyright 2016 Jakub Klama <jceel@FreeBSD.org>
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* All rights reserved
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted providing that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#ifndef LIB9P_LIB9P_H
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#define LIB9P_LIB9P_H
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#include <sys/types.h>
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#include <sys/queue.h>
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#include <pthread.h>
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#include "fcall.h"
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#define L9P_ENOFID "FID does not exist"
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#define L9P_ENOFUNC "Function not implemented"
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#define L9P_EINTR "Interrupted"
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enum l9p_pack_mode
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{
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L9P_PACK,
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L9P_UNPACK
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};
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enum l9p_integer_type
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{
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L9P_BYTE = 1,
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L9P_WORD = 2,
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L9P_DWORD = 4,
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L9P_QWORD = 8
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};
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struct l9p_message
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{
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enum l9p_pack_mode lm_mode;
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uint8_t *lm_buffer;
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uint8_t *lm_pos;
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uint8_t *lm_end;
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};
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struct l9p_request
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{
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uint32_t lr_tag;
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union l9p_fcall lr_req;
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union l9p_fcall lr_resp;
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struct l9p_openfile *lr_fid;
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struct l9p_connection *lr_conn;
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pthread_t lr_thread;
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LIST_ENTRY(l9p_request) lr_link;
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};
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struct l9p_openfile
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{
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char *lo_uid;
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void *lo_aux;
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uint32_t lo_fid;
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struct l9p_qid lo_qid;
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struct l9p_connection *lo_conn;
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LIST_ENTRY(l9p_openfile) lo_link;
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};
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struct l9p_connection
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{
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struct l9p_server *lc_server;
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pthread_mutex_t lc_send_lock;
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void (*lc_send_request)(const void *, const size_t, void *);
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void *lc_send_request_aux;
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void *lc_softc;
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LIST_HEAD(, l9p_request) lc_requests;
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LIST_HEAD(, l9p_openfile) lc_files;
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LIST_ENTRY(l9p_connection) lc_link;
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};
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struct l9p_server
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{
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struct l9p_backend *ls_backend;
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LIST_HEAD(, l9p_connection) ls_conns;
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};
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struct l9p_backend
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{
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void *softc;
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void (*attach)(void *, struct l9p_request *);
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void (*clunk)(void *, struct l9p_request *);
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void (*create)(void *, struct l9p_request *);
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void (*flush)(void *, struct l9p_request *);
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void (*open)(void *, struct l9p_request *);
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void (*read)(void *, struct l9p_request *);
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void (*remove)(void *, struct l9p_request *);
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void (*stat)(void *, struct l9p_request *);
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void (*walk)(void *, struct l9p_request *);
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void (*write)(void *, struct l9p_request *);
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void (*wstat)(void *, struct l9p_request *);
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void (*freefid)(void *, struct l9p_openfile *);
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};
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int l9p_pufcall(struct l9p_message *msg, union l9p_fcall *fcall);
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int l9p_server_init(struct l9p_server **, struct l9p_backend *backend);
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int l9p_connection_init(struct l9p_server *server, struct l9p_connection **conn);
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void l9p_connection_free(struct l9p_connection *conn);
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void l9p_connection_on_send_request(struct l9p_connection *conn, void (*cb)(void *, size_t, void *), void *);
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void l9p_connection_recv(struct l9p_connection *conn, void *buf, size_t len);
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void l9p_connection_close(struct l9p_connection *conn);
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struct l9p_openfile *l9p_connection_find_fid(struct l9p_connection *conn, uint32_t fid);
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struct l9p_request *l9p_connection_find_tag(struct l9p_connection *conn, uint32_t tag);
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void l9p_respond(struct l9p_request *req, const char *error);
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#endif //LIB9P_LIB9P_H
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