"Fossies" - the Fresh Open Source Software Archive

Member "scanssh-2.1/strlcat.c" (31 Mar 2004, 2561 Bytes) of package /linux/privat/old/scanssh-2.1.tar.gz:

    1 /* $Id: strlcat.c,v 1.1 2004/03/31 07:40:49 provos Exp $ */
    2 /*  $OpenBSD: strlcat.c,v 1.1 1998/07/01 01:29:45 millert Exp $ */
    3 
    4 /*
    5  * Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>
    6  * All rights reserved.
    7  *
    8  * Redistribution and use in source and binary forms, with or without
    9  * modification, are permitted provided that the following conditions
   10  * are met:
   11  * 1. Redistributions of source code must retain the above copyright
   12  *    notice, this list of conditions and the following disclaimer.
   13  * 2. Redistributions in binary form must reproduce the above copyright
   14  *    notice, this list of conditions and the following disclaimer in the
   15  *    documentation and/or other materials provided with the distribution.
   16  * 3. The name of the author may not be used to endorse or promote products
   17  *    derived from this software without specific prior written permission.
   18  *
   19  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
   20  * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
   21  * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL
   22  * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
   23  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
   24  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
   25  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
   26  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
   27  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
   28  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   29  */
   30 
   31 #if defined(LIBC_SCCS) && !defined(lint)
   32 static char *rcsid = "$OpenBSD: strlcat.c,v 1.1 1998/07/01 01:29:45 millert Exp $";
   33 #endif /* LIBC_SCCS and not lint */
   34 
   35 #include <sys/types.h>
   36 #include <string.h>
   37 
   38 /*
   39  * Appends src to string dst of size siz (unlike strncat, siz is the
   40  * full size of dst, not space left).  At most siz-1 characters
   41  * will be copied.  Always NUL terminates (unless siz == 0).
   42  * Returns strlen(src); if retval >= siz, truncation occurred.
   43  */
   44 size_t strlcat(dst, src, siz)
   45     char *dst;
   46     const char *src;
   47     size_t siz;
   48 {
   49     register char *d = dst;
   50     register const char *s = src;
   51     register size_t n = siz;
   52     size_t dlen;
   53 
   54     /* Find the end of dst and adjust bytes left */
   55     while (*d != '\0' && n != 0)
   56         d++;
   57     dlen = d - dst;
   58     n -= dlen;
   59 
   60     if (n == 0)
   61         return(dlen + strlen(s));
   62     while (*s != '\0') {
   63         if (n != 1) {
   64             *d++ = *s;
   65             n--;
   66         }
   67         s++;
   68     }
   69     *d = '\0';
   70 
   71     return(dlen + (s - src));   /* count does not include NUL */
   72 }