1 /* $OpenBSD: aucat.h,v 1.8 2019/07/05 22:53:47 ratchov Exp $ */ 2 /* 3 * Copyright (c) 2008 Alexandre Ratchov <alex@caoua.org> 4 * 5 * Permission to use, copy, modify, and distribute this software for any 6 * purpose with or without fee is hereby granted, provided that the above 7 * copyright notice and this permission notice appear in all copies. 8 * 9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 16 */ 17 18 #ifndef AUCAT_H 19 #define AUCAT_H 20 21 #include "amsg.h" 22 23 struct aucat { 24 int fd; /* socket */ 25 struct amsg rmsg, wmsg; /* temporary messages */ 26 size_t wtodo, rtodo; /* bytes to complete the packet */ 27 #define RSTATE_MSG 0 /* message being received */ 28 #define RSTATE_DATA 1 /* data being received */ 29 unsigned rstate; /* one of above */ 30 #define WSTATE_IDLE 2 /* nothing to do */ 31 #define WSTATE_MSG 3 /* message being transferred */ 32 #define WSTATE_DATA 4 /* data being transferred */ 33 unsigned wstate; /* one of above */ 34 unsigned maxwrite; /* bytes we're allowed to write */ 35 }; 36 37 int _aucat_rmsg(struct aucat *, int *); 38 int _aucat_wmsg(struct aucat *, int *); 39 size_t _aucat_rdata(struct aucat *, void *, size_t, int *); 40 size_t _aucat_wdata(struct aucat *, const void *, size_t, unsigned, int *); 41 int _aucat_open(struct aucat *, const char *, unsigned); 42 void _aucat_close(struct aucat *, int); 43 int _aucat_pollfd(struct aucat *, struct pollfd *, int); 44 int _aucat_revents(struct aucat *, struct pollfd *); 45 int _aucat_setfl(struct aucat *, int, int *); 46 47 #endif /* !defined(AUCAT_H) */ 48