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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2006 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
#include <sys/types.h>
#include <sys/param.h>
#include <sys/systm.h>
/*
* Standalone copies of some basic routines. Note that these routines
* are transformed via Makefile -D flags into krtld_* routines. So,
* this version of strcmp() will become krtld_strcmp() when built.
*
* This dubious practice is so that krtld can have its own private
* versions of these routines suitable for use during early boot,
* when kernel-based routines might not work. Make sure to use 'nm'
* on your krtld to make sure it is calling the appropriate routines.
*/
int
strcmp(const char *s1, const char *s2)
{
if (s1 == s2)
return (0);
while (*s1 == *s2++)
if (*s1++ == '\0')
return (0);
return (*s1 - s2[-1]);
}
/*
* Compare strings (at most n bytes): return *s1-*s2 for the last
* characters in s1 and s2 which were compared.
*/
int
strncmp(const char *s1, const char *s2, size_t n)
{
if (s1 == s2)
return (0);
n++;
while (--n != 0 && *s1 == *s2++)
if (*s1++ == '\0')
return (0);
return ((n == 0) ? 0 : *s1 - *--s2);
}
size_t
strlen(const char *s)
{
const char *s0 = s + 1;
while (*s++ != '\0')
;
return (s - s0);
}
char *
strcpy(char *s1, const char *s2)
{
char *os1 = s1;
while (*s1++ = *s2++)
;
return (os1);
}
char *
strncpy(char *s1, const char *s2, size_t n)
{
char *os1 = s1;
n++;
while ((--n != 0) && ((*s1++ = *s2++) != '\0'))
;
if (n != 0)
while (--n != 0)
*s1++ = '\0';
return (os1);
}
char *
strcat(char *s1, const char *s2)
{
char *os1 = s1;
while (*s1++)
;
--s1;
while (*s1++ = *s2++)
;
return (os1);
}
size_t
strlcat(char *dst, const char *src, size_t dstsize)
{
char *df = dst;
size_t left = dstsize;
size_t l1;
size_t l2 = strlen(src);
size_t copied;
while (left-- != 0 && *df != '\0')
df++;
l1 = df - dst;
if (dstsize == l1)
return (l1 + l2);
copied = l1 + l2 >= dstsize ? dstsize - l1 - 1 : l2;
bcopy(src, dst + l1, copied);
dst[l1+copied] = '\0';
return (l1 + l2);
}
char *
strchr(const char *sp, int c)
{
do {
if (*sp == (char)c)
return ((char *)sp);
} while (*sp++);
return (NULL);
}
void
bzero(void *p_arg, size_t count)
{
char zero = 0;
caddr_t p = p_arg;
while (count != 0)
*p++ = zero, count--; /* Avoid clr for 68000, still... */
}
void
bcopy(const void *src_arg, void *dest_arg, size_t count)
{
caddr_t src = (caddr_t)src_arg;
caddr_t dest = dest_arg;
if (src < dest && (src + count) > dest) {
/* overlap copy */
while (--count != -1)
*(dest + count) = *(src + count);
} else {
while (--count != -1)
*dest++ = *src++;
}
}
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