sys/sys/sbuf.h

   1 /*-
   2  * Copyright (c) 2000 Poul-Henning Kamp and Dag-Erling Coïdan Smørgrav
   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: src/sys/sys/sbuf.h,v 1.7.2.2 2002/03/12 01:00:28 archie Exp $
  29  *      $DragonFly: src/sys/sys/sbuf.h,v 1.4 2006/05/20 02:42:13 dillon Exp $
  30  */
  31
  32 #ifndef _SYS_SBUF_H_
  33 #define _SYS_SBUF_H_
  34
  35 #ifndef _SYS_CDEFS_H_
  36 #include <sys/cdefs.h>
  37 #endif
  38 #ifndef _MACHINE_STDINT_H_
  39 #include <machine/stdint.h>
  40 #endif
  41 #ifndef _MACHINE_STDARG_H_
  42 #include <machine/stdarg.h>
  43 #endif
  44
  45 /*
  46  * Structure definition
  47  */
  48 struct sbuf {
  49         char            *s_buf;         /* storage buffer */
  50         void            *s_unused;      /* binary compatibility. */
  51         int              s_size;        /* size of storage buffer */
  52         int              s_len;         /* current length of string */
  53 #define SBUF_FIXEDLEN   0x00000000      /* fixed length buffer (default) */
  54 #define SBUF_AUTOEXTEND 0x00000001      /* automatically extend buffer */
  55 #define SBUF_USRFLAGMSK 0x0000ffff      /* mask of flags the user may specify */
  56 #define SBUF_DYNAMIC    0x00010000      /* s_buf must be freed */
  57 #define SBUF_FINISHED   0x00020000      /* set by sbuf_finish() */
  58 #define SBUF_OVERFLOWED 0x00040000      /* sbuf overflowed */
  59 #define SBUF_DYNSTRUCT  0x00080000      /* sbuf must be freed */
  60         int              s_flags;       /* flags */
  61 };
  62
  63 __BEGIN_DECLS
  64 /*
  65  * API functions
  66  */
  67 struct sbuf     *sbuf_new(struct sbuf *, char *, int, int);
  68 void             sbuf_clear(struct sbuf *);
  69 int              sbuf_setpos(struct sbuf *, int);
  70 int              sbuf_bcat(struct sbuf *, const char *, __size_t);
  71 int              sbuf_bcpy(struct sbuf *, const char *, __size_t);
  72 int              sbuf_cat(struct sbuf *, const char *);
  73 int              sbuf_cpy(struct sbuf *, const char *);
  74 int              sbuf_printf(struct sbuf *, const char *, ...) __printflike(2, 3);
  75 int              sbuf_vprintf(struct sbuf *, const char *, __va_list) __printflike(2, 0);
  76 int              sbuf_putc(struct sbuf *, int);
  77 int              sbuf_trim(struct sbuf *);
  78 int              sbuf_overflowed(struct sbuf *);
  79 void             sbuf_finish(struct sbuf *);
  80 char            *sbuf_data(struct sbuf *);
  81 int              sbuf_len(struct sbuf *);
  82 void             sbuf_delete(struct sbuf *);
  83
  84 #ifdef _KERNEL
  85 struct uio;
  86 struct sbuf     *sbuf_uionew(struct sbuf *, struct uio *, int *);
  87 int              sbuf_bcopyin(struct sbuf *, const void *, __size_t);
  88 int              sbuf_copyin(struct sbuf *, const void *, __size_t);
  89 #endif
  90 __END_DECLS
  91
  92 #endif