81 lines
1.8 KiB
C
81 lines
1.8 KiB
C
/*
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* Hexadecimal dump for displaying ioctl data structures.
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*
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* Copyright (c) 2007 by Jefferson Ogata
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*/
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/*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; see the file COPYING. If not, write to the Free Software
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* Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#include <stdio.h>
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#include <string.h>
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#include <ctype.h>
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#include <sys/types.h>
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void dumpbytes (FILE *f, void *z, size_t len, void *addr, char *prefix)
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{
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off_t k;
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int j = 15;
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char abuf[20];
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unsigned char *buf = z;
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for (k = 0; k < len; ++k)
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{
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unsigned char c = buf[k];
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j = k % 16;
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if (j == 0)
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{
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if (prefix)
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fprintf (f, " %s+%04lx:\t", prefix, k);
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else
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fprintf (f, " %08lx:\t", ((unsigned long) addr) + k);
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memset (abuf, ' ', sizeof abuf - 1);
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abuf[sizeof abuf - 1] = '\0';
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}
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else
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{
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if (j % 4 == 0)
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putc (' ', f);
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if (j % 8 == 0)
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putc (' ', f);
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}
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fprintf (f, "%02x", c);
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abuf[j + j / 4] = isprint (c) ? c : '.';
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if (j == 15)
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{
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fprintf (f, " %s\n", abuf);
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}
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}
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if (j != 15)
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{
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for ( ; j < 15; ++j)
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{
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if (j % 4 == 0)
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putc (' ', f);
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if (j % 8 == 0)
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putc (' ', f);
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putc (' ', f);
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putc (' ', f);
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}
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fprintf (f, " %s\n", abuf);
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}
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}
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