The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/sys/sbuf.h

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    1 /*-
    2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
    3  *
    4  * Copyright (c) 2000-2008 Poul-Henning Kamp
    5  * Copyright (c) 2000-2008 Dag-Erling Coïdan Smørgrav
    6  * All rights reserved.
    7  *
    8  * Redistribution and use in source and binary forms, with or without
    9  * modification, are permitted provided that the following conditions
   10  * are met:
   11  * 1. Redistributions of source code must retain the above copyright
   12  *    notice, this list of conditions and the following disclaimer
   13  *    in this position and unchanged.
   14  * 2. Redistributions in binary form must reproduce the above copyright
   15  *    notice, this list of conditions and the following disclaimer in the
   16  *    documentation and/or other materials provided with the distribution.
   17  *
   18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   19  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   20  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   21  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   22  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   23  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   24  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   25  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   26  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   27  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   28  * SUCH DAMAGE.
   29  *
   30  *      $FreeBSD$
   31  */
   32 
   33 #ifndef _SYS_SBUF_H_
   34 #define _SYS_SBUF_H_
   35 
   36 #include <sys/_types.h>
   37 
   38 struct sbuf;
   39 typedef int (sbuf_drain_func)(void *, const char *, int);
   40 
   41 /*
   42  * Structure definition
   43  */
   44 struct sbuf {
   45         char            *s_buf;         /* storage buffer */
   46         sbuf_drain_func *s_drain_func;  /* drain function */
   47         void            *s_drain_arg;   /* user-supplied drain argument */
   48         int              s_error;       /* current error code */
   49         ssize_t          s_size;        /* size of storage buffer */
   50         ssize_t          s_len;         /* current length of string */
   51 #define SBUF_FIXEDLEN   0x00000000      /* fixed length buffer (default) */
   52 #define SBUF_AUTOEXTEND 0x00000001      /* automatically extend buffer */
   53 #define SBUF_INCLUDENUL 0x00000002      /* nulterm byte is counted in len */
   54 #define SBUF_DRAINTOEOR 0x00000004      /* use section 0 as drain EOR marker */
   55 #define SBUF_NOWAIT     0x00000008      /* Extend with non-blocking malloc */
   56 #define SBUF_USRFLAGMSK 0x0000ffff      /* mask of flags the user may specify */
   57 #define SBUF_DYNAMIC    0x00010000      /* s_buf must be freed */
   58 #define SBUF_FINISHED   0x00020000      /* set by sbuf_finish() */
   59 #define SBUF_DYNSTRUCT  0x00080000      /* sbuf must be freed */
   60 #define SBUF_INSECTION  0x00100000      /* set by sbuf_start_section() */
   61         int              s_flags;       /* flags */
   62         ssize_t          s_sect_len;    /* current length of section */
   63         ssize_t          s_rec_off;     /* current record start offset */
   64 };
   65 
   66 #ifndef HD_COLUMN_MASK
   67 #define HD_COLUMN_MASK  0xff
   68 #define HD_DELIM_MASK   0xff00
   69 #define HD_OMIT_COUNT   (1 << 16)
   70 #define HD_OMIT_HEX     (1 << 17)
   71 #define HD_OMIT_CHARS   (1 << 18)
   72 #endif /* HD_COLUMN_MASK */
   73 
   74 __BEGIN_DECLS
   75 /*
   76  * API functions
   77  */
   78 struct sbuf     *sbuf_new(struct sbuf *, char *, int, int);
   79 #define          sbuf_new_auto()                                \
   80         sbuf_new(NULL, NULL, 0, SBUF_AUTOEXTEND)
   81 int              sbuf_get_flags(struct sbuf *);
   82 void             sbuf_clear_flags(struct sbuf *, int);
   83 void             sbuf_set_flags(struct sbuf *, int);
   84 void             sbuf_clear(struct sbuf *);
   85 int              sbuf_setpos(struct sbuf *, ssize_t);
   86 int              sbuf_bcat(struct sbuf *, const void *, size_t);
   87 int              sbuf_bcpy(struct sbuf *, const void *, size_t);
   88 int              sbuf_cat(struct sbuf *, const char *);
   89 int              sbuf_cpy(struct sbuf *, const char *);
   90 int              sbuf_printf(struct sbuf *, const char *, ...)
   91         __printflike(2, 3);
   92 int              sbuf_vprintf(struct sbuf *, const char *, __va_list)
   93         __printflike(2, 0);
   94 int              sbuf_putc(struct sbuf *, int);
   95 void             sbuf_set_drain(struct sbuf *, sbuf_drain_func *, void *);
   96 int              sbuf_drain(struct sbuf *);
   97 int              sbuf_trim(struct sbuf *);
   98 int              sbuf_error(const struct sbuf *);
   99 int              sbuf_finish(struct sbuf *);
  100 char            *sbuf_data(struct sbuf *);
  101 ssize_t          sbuf_len(struct sbuf *);
  102 int              sbuf_done(const struct sbuf *);
  103 void             sbuf_delete(struct sbuf *);
  104 void             sbuf_start_section(struct sbuf *, ssize_t *);
  105 ssize_t          sbuf_end_section(struct sbuf *, ssize_t, size_t, int);
  106 void             sbuf_hexdump(struct sbuf *, const void *, int, const char *,
  107                      int);
  108 int              sbuf_count_drain(void *arg, const char *data, int len);
  109 void             sbuf_putbuf(struct sbuf *);
  110 
  111 #ifdef _KERNEL
  112 struct uio;
  113 struct sbuf     *sbuf_uionew(struct sbuf *, struct uio *, int *);
  114 int              sbuf_bcopyin(struct sbuf *, const void *, size_t);
  115 int              sbuf_copyin(struct sbuf *, const void *, size_t);
  116 #endif
  117 __END_DECLS
  118 
  119 #endif

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