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mrouted

    1: /*	$OpenBSD: strlcpy.c,v 1.11 2006/05/05 15:27:38 millert Exp $	*/
    2: 
    3: /*
    4:  * Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>
    5:  *
    6:  * Permission to use, copy, modify, and distribute this software for any
    7:  * purpose with or without fee is hereby granted, provided that the above
    8:  * copyright notice and this permission notice appear in all copies.
    9:  *
   10:  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   11:  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
   12:  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
   13:  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
   14:  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
   15:  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
   16:  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
   17:  */
   18: 
   19: #include <sys/types.h>
   20: #include <string.h>
   21: 
   22: /*
   23:  * Copy src to string dst of size siz.  At most siz-1 characters
   24:  * will be copied.  Always NUL terminates (unless siz == 0).
   25:  * Returns strlen(src); if retval >= siz, truncation occurred.
   26:  */
   27: size_t
   28: strlcpy(char *dst, const char *src, size_t siz)
   29: {
   30: 	char *d = dst;
   31: 	const char *s = src;
   32: 	size_t n = siz;
   33: 
   34: 	/* Copy as many bytes as will fit */
   35: 	if (n != 0) {
   36: 		while (--n != 0) {
   37: 			if ((*d++ = *s++) == '\0')
   38: 				break;
   39: 		}
   40: 	}
   41: 
   42: 	/* Not enough room in dst, add NUL and traverse rest of src */
   43: 	if (n == 0) {
   44: 		if (siz != 0)
   45: 			*d = '\0';		/* NUL-terminate dst */
   46: 		while (*s++)
   47: 			;
   48: 	}
   49: 
   50: 	return(s - src - 1);	/* count does not include NUL */
   51: }
   52: 
   53: /**
   54:  * Local Variables:
   55:  *  version-control: t
   56:  *  c-file-style: "bsd"
   57:  * End:
   58:  */