strlcpy.c

RTEMS (Real-Time Executive for Multiprocessor Systems) is a free open source real-time operating sys

/*
 * utils.c - various utility functions used in pppd.
 *
 * Copyright (c) 1999 The Australian National University.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms are permitted
 * provided that the above copyright notice and this paragraph are
 * duplicated in all such forms and that any documentation,
 * advertising materials, and other materials related to such
 * distribution and use acknowledge that the software was developed
 * by the Australian National University.  The name of the University
 * may not be used to endorse or promote products derived from this
 * software without specific prior written permission.
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 */

#if HAVE_CONFIG_H
#include "config.h"
#endif

#include <string.h>

#ifndef HAVE_STRLCPY
/*
 * strlcpy - like strcpy/strncpy, doesn't overflow destination buffer,
 * always leaves destination null-terminated (for len > 0).
 */
size_t
strlcpy(dest, src, len)
    char *dest;
    const char *src;
    size_t len;
{
    size_t ret = strlen(src);

    if (len != 0) {
	if (ret < len)
	    strcpy(dest, src);
	else {
	    strncpy(dest, src, len - 1);
	    dest[len-1] = 0;
	}
    }
    return ret;
}
#endif