sbuf.h revision 78077
1/*- 2 * Copyright (c) 2000 Poul-Henning Kamp and Dag-Erling Co�dan Sm�rgrav 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer 10 * in this position and unchanged. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. The name of the author may not be used to endorse or promote products 15 * derived from this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 * 28 * $FreeBSD: head/sys/sys/sbuf.h 78077 2001-06-11 17:05:52Z des $ 29 */ 30 31#ifndef _SYS_SBUF_H_ 32#define _SYS_SBUF_H_ 33 34/* 35 * Structure definition 36 */ 37struct sbuf { 38 char *s_buf; /* storage buffer */ 39 struct sbuf *s_next; /* next in chain */ 40 int s_size; /* size of storage buffer */ 41 int s_len; /* current length of string */ 42#define SBUF_AUTOEXTEND 0x00000001 /* automatically extend buffer */ 43#define SBUF_DYNAMIC 0x00010000 /* s_buf must be freed */ 44#define SBUF_FINISHED 0x00020000 /* set by sbuf_finish() */ 45#define SBUF_OVERFLOWED 0x00040000 /* sbuf overflowed */ 46#define SBUF_DYNSTRUCT 0x00080000 /* sbuf must be freed */ 47 int s_flags; /* flags */ 48}; 49 50__BEGIN_DECLS 51/* 52 * API functions 53 */ 54struct sbuf *sbuf_new(struct sbuf *s, char *buf, int length, int flags); 55void sbuf_clear(struct sbuf *s); 56int sbuf_setpos(struct sbuf *s, int pos); 57int sbuf_bcat(struct sbuf *s, const char *str, size_t len); 58int sbuf_bcpy(struct sbuf *s, const char *str, size_t len); 59int sbuf_cat(struct sbuf *s, const char *str); 60int sbuf_cpy(struct sbuf *s, const char *str); 61int sbuf_printf(struct sbuf *s, char *fmt, ...); 62int sbuf_putc(struct sbuf *s, int c); 63int sbuf_overflowed(struct sbuf *s); 64void sbuf_finish(struct sbuf *s); 65char *sbuf_data(struct sbuf *s); 66int sbuf_len(struct sbuf *s); 67void sbuf_delete(struct sbuf *s); 68 69#ifdef _KERNEL 70int sbuf_bcopyin(struct sbuf *s, const void *uaddr, size_t len); 71int sbuf_copyin(struct sbuf *s, const void *uaddr, size_t len); 72#endif 73__END_DECLS 74 75#endif 76