/* $OpenBSD: iobuf.h,v 1.1.1.1 2018/04/27 16:14:36 eric Exp $ */ /* * Copyright (c) 2017 Eric Faurot * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ struct ioqbuf { struct ioqbuf *next; char *buf; size_t size; size_t wpos; size_t rpos; }; struct iobuf { char *buf; size_t max; size_t size; size_t wpos; size_t rpos; size_t queued; struct ioqbuf *outq; struct ioqbuf *outqlast; }; #define IOBUF_WANT_READ -1 #define IOBUF_WANT_WRITE -2 #define IOBUF_CLOSED -3 #define IOBUF_ERROR -4 #define IOBUF_SSLERROR -5 int iobuf_init(struct iobuf *, size_t, size_t); void iobuf_clear(struct iobuf *); int iobuf_extend(struct iobuf *, size_t); void iobuf_normalize(struct iobuf *); void iobuf_drop(struct iobuf *, size_t); size_t iobuf_space(struct iobuf *); size_t iobuf_len(struct iobuf *); size_t iobuf_left(struct iobuf *); char *iobuf_data(struct iobuf *); char *iobuf_getline(struct iobuf *, size_t *); ssize_t iobuf_read(struct iobuf *, int); ssize_t iobuf_read_ssl(struct iobuf *, void *); size_t iobuf_queued(struct iobuf *); void* iobuf_reserve(struct iobuf *, size_t); int iobuf_queue(struct iobuf *, const void*, size_t); int iobuf_queuev(struct iobuf *, const struct iovec *, int); int iobuf_fqueue(struct iobuf *, const char *, ...); int iobuf_vfqueue(struct iobuf *, const char *, va_list); int iobuf_flush(struct iobuf *, int); int iobuf_flush_ssl(struct iobuf *, void *); ssize_t iobuf_write(struct iobuf *, int); ssize_t iobuf_write_ssl(struct iobuf *, void *);