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FreeBSD/Linux Kernel Cross Reference
sys/libkern/inet_ntoa.c

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    1 /*-
    2  * Copyright 1994, 1995 Massachusetts Institute of Technology
    3  *
    4  * Permission to use, copy, modify, and distribute this software and
    5  * its documentation for any purpose and without fee is hereby
    6  * granted, provided that both the above copyright notice and this
    7  * permission notice appear in all copies, that both the above
    8  * copyright notice and this permission notice appear in all
    9  * supporting documentation, and that the name of M.I.T. not be used
   10  * in advertising or publicity pertaining to distribution of the
   11  * software without specific, written prior permission.  M.I.T. makes
   12  * no representations about the suitability of this software for any
   13  * purpose.  It is provided "as is" without express or implied
   14  * warranty.
   15  *
   16  * THIS SOFTWARE IS PROVIDED BY M.I.T. ``AS IS''.  M.I.T. DISCLAIMS
   17  * ALL EXPRESS OR IMPLIED WARRANTIES WITH REGARD TO THIS SOFTWARE,
   18  * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
   19  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT
   20  * SHALL M.I.T. BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
   21  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
   22  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
   23  * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
   24  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
   25  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
   26  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   27  * SUCH DAMAGE.
   28  */
   29 
   30 #include <sys/cdefs.h>
   31 __FBSDID("$FreeBSD: releng/8.0/sys/libkern/inet_ntoa.c 139815 2005-01-07 00:24:33Z imp $");
   32 
   33 #include <sys/param.h>
   34 #include <sys/systm.h>
   35 
   36 #include <netinet/in.h>
   37 
   38 char *
   39 inet_ntoa(struct in_addr ina)
   40 {
   41         static char buf[4*sizeof "123"];
   42         unsigned char *ucp = (unsigned char *)&ina;
   43 
   44         sprintf(buf, "%d.%d.%d.%d",
   45                 ucp[0] & 0xff,
   46                 ucp[1] & 0xff,
   47                 ucp[2] & 0xff,
   48                 ucp[3] & 0xff);
   49         return buf;
   50 }
   51 
   52 char *
   53 inet_ntoa_r(struct in_addr ina, char *buf)
   54 {
   55         unsigned char *ucp = (unsigned char *)&ina;
   56 
   57         sprintf(buf, "%d.%d.%d.%d",
   58                 ucp[0] & 0xff,
   59                 ucp[1] & 0xff,
   60                 ucp[2] & 0xff,
   61                 ucp[3] & 0xff);
   62         return buf;
   63 }
   64 
   65 

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