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/*-
* Copyright (c) 1998 Michael Smith <msmith@freebsd.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $Id: misc.c,v 1.1.1.1 1998/08/21 03:17:41 msmith Exp $
*/
#include <string.h>
#include <stand.h>
#include <bootstrap.h>
/*
* Concatenate the (argc) elements of (argv) into a single string, and return
* a copy of same.
*/
char *
unargv(int argc, char *argv[])
{
size_t hlong;
int i;
char *cp;
for (hlong = 0, i = 0, hlong = 0; i < argc; i++)
hlong += strlen(argv[i]) + 1;
if(hlong == 0)
return(NULL);
cp = malloc(hlong);
cp[0] = 0;
for (i = 0; i < argc; i++)
strcat(cp, argv[i]);
return(cp);
}
/*
* Get the length of a string in kernel space
*/
size_t
strlenout(vm_offset_t src)
{
char c;
size_t len;
for (len = 0; ; len++) {
archsw.arch_copyout(src++, &c, 1);
if (c == 0)
break;
}
return(len);
}
/*
* Make a duplicate copy of a string in kernel space
*/
char *
strdupout(vm_offset_t str)
{
char *result, *cp;
result = malloc(strlenout(str) + 1);
for (cp = result; ;cp++) {
archsw.arch_copyout(str++, cp, 1);
if (*cp == 0)
break;
}
return(result);
}
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