bsd/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: /repoman/r/ncvs/src/sys/sys/sbuf.h,v 1.14 2004/07/09 11:35:30 des Exp $
  29  */
  30
  31 #ifndef _SYS_SBUF_H_
  32 #define _SYS_SBUF_H_
  33
  34 #include <sys/_types.h>
  35 #include <stdarg.h>
  36 #include <stddef.h>
  37
  38 /*
  39  * Structure definition
  40  */
  41 struct sbuf {
  42         char            *s_buf;         /* storage buffer */
  43         void            *s_unused;      /* binary compatibility. */
  44         int              s_size;        /* size of storage buffer */
  45         int              s_len;         /* current length of string */
  46 #define SBUF_FIXEDLEN   0x00000000      /* fixed length buffer (default) */
  47 #define SBUF_AUTOEXTEND 0x00000001      /* automatically extend buffer */
  48 #define SBUF_USRFLAGMSK 0x0000ffff      /* mask of flags the user may specify */
  49 #define SBUF_DYNAMIC    0x00010000      /* s_buf must be freed */
  50 #define SBUF_FINISHED   0x00020000      /* set by sbuf_finish() */
  51 #define SBUF_OVERFLOWED 0x00040000      /* sbuf overflowed */
  52 #define SBUF_DYNSTRUCT  0x00080000      /* sbuf must be freed */
  53         int              s_flags;       /* flags */
  54 };
  55
  56 __BEGIN_DECLS
  57 #ifdef KERNEL_PRIVATE
  58 struct sbuf     *sbuf_new(struct sbuf *, char *, int, int);
  59 void             sbuf_clear(struct sbuf *);
  60 int              sbuf_setpos(struct sbuf *, int);
  61 int              sbuf_bcat(struct sbuf *, const void *, size_t);
  62 int              sbuf_bcpy(struct sbuf *, const void *, size_t);
  63 int              sbuf_cat(struct sbuf *, const char *);
  64 int              sbuf_cpy(struct sbuf *, const char *);
  65 int              sbuf_printf(struct sbuf *, const char *, ...) __printflike(2, 3);
  66 int              sbuf_vprintf(struct sbuf *, const char *, va_list) __printflike(2, 0);
  67 int              sbuf_putc(struct sbuf *, int);
  68 int              sbuf_trim(struct sbuf *);
  69 int              sbuf_overflowed(struct sbuf *);
  70 void             sbuf_finish(struct sbuf *);
  71 char            *sbuf_data(struct sbuf *);
  72 int              sbuf_len(struct sbuf *);
  73 int              sbuf_done(struct sbuf *);
  74 void             sbuf_delete(struct sbuf *);
  75 #endif
  76
  77 __END_DECLS
  78
  79 #endif