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/geom/virstor/binstream.h

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    1 /*-
    2  * Copyright (c) 2005 Ivan Voras <ivoras@gmail.com>
    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  * 2. Redistributions in binary form must reproduce the above copyright
   11  *    notice, this list of conditions and the following disclaimer in the
   12  *    documentation and/or other materials provided with the distribution.
   13  *
   14  * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
   15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
   18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   24  * SUCH DAMAGE.
   25  *
   26  * $FreeBSD: releng/8.4/sys/geom/virstor/binstream.h 172302 2007-09-23 07:34:23Z pjd $
   27  */
   28 
   29 // $Id: binstream.h,v 1.1 2006/07/05 10:47:54 ivoras Exp $
   30 
   31 
   32 #ifndef _BIN_STREAM_
   33 #define _BIN_STREAM_
   34 
   35 #ifndef uint8_t
   36 #define uint8_t unsigned char
   37 #endif
   38 
   39 typedef struct {
   40         unsigned char  *data;
   41         int             pos;
   42 }       bin_stream_t;
   43 
   44 
   45 /* "Open" a binary stream for reading */
   46 void            bs_open   (bin_stream_t * bs, void *data);
   47 
   48 /* "Reset" position in binary stream to zero */
   49 void            bs_reset  (bin_stream_t * bs);
   50 
   51 
   52 /* Write a zero-terminated string; return next position */
   53 unsigned        bs_write_str(bin_stream_t * bs, char *data);
   54 
   55 /* Write an arbitrary buffer; return next position */
   56 unsigned        bs_write_buf(bin_stream_t * bs, char *data, unsigned data_size);
   57 
   58 /* Write a 8bit uint; return next position. */
   59 unsigned        bs_write_u8(bin_stream_t * bs, uint8_t data);
   60 
   61 /* Write a 16bit uint; return next position. */
   62 unsigned        bs_write_u16(bin_stream_t * bs, uint16_t data);
   63 
   64 /* Write a 32bit uint; return next position. */
   65 unsigned        bs_write_u32(bin_stream_t * bs, uint32_t data);
   66 
   67 /* Write a 64bit uint; return next position. */
   68 unsigned        bs_write_u64(bin_stream_t * bs, uint64_t data);
   69 
   70 
   71 /*
   72  * Read a null-terminated string from stream into a buffer; buf_size is size
   73  * of the buffer, including the final \0. Returns buf pointer or NULL if
   74  * garbage input.
   75  */
   76 char           *bs_read_str(bin_stream_t * bs, char *buf, unsigned buf_size);
   77 
   78 /* Read an arbitrary buffer. */
   79 void            bs_read_buf(bin_stream_t * bs, char *buf, unsigned buf_size);
   80 
   81 /* Read a 8bit uint * return it */
   82 uint8_t         bs_read_u8(bin_stream_t * bs);
   83 
   84 /* Read a 16bit uint * return it */
   85 uint16_t        bs_read_u16(bin_stream_t * bs);
   86 
   87 /* Read a 8bit uint * return it */
   88 uint32_t        bs_read_u32(bin_stream_t * bs);
   89 
   90 /* Read a 8bit uint * return it */
   91 uint64_t        bs_read_u64(bin_stream_t * bs);
   92 
   93 #endif

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