Return to strlcpy.c CVS log

Up to [ELWIX - Embedded LightWeight unIX -] / embedaddon / libevent

Annotation of embedaddon/libevent/strlcpy.c, revision 1.1.1.1

1.1       misho       1: /*     $OpenBSD: strlcpy.c,v 1.5 2001/05/13 15:40:16 deraadt Exp $     */
                      2: 
                      3: /*
                      4:  * Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>
                      5:  * All rights reserved.
                      6:  *
                      7:  * Redistribution and use in source and binary forms, with or without
                      8:  * modification, are permitted provided that the following conditions
                      9:  * are met:
                     10:  * 1. Redistributions of source code must retain the above copyright
                     11:  *    notice, this list of conditions and the following disclaimer.
                     12:  * 2. Redistributions in binary form must reproduce the above copyright
                     13:  *    notice, this list of conditions and the following disclaimer in the
                     14:  *    documentation and/or other materials provided with the distribution.
                     15:  * 3. The name of the author may not be used to endorse or promote products
                     16:  *    derived from this software without specific prior written permission.
                     17:  *
                     18:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
                     19:  * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
                     20:  * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL
                     21:  * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
                     22:  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
                     23:  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
                     24:  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
                     25:  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
                     26:  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
                     27:  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
                     28:  */
                     29: 
                     30: #if defined(LIBC_SCCS) && !defined(lint)
                     31: static char *rcsid = "$OpenBSD: strlcpy.c,v 1.5 2001/05/13 15:40:16 deraadt Exp $";
                     32: #endif /* LIBC_SCCS and not lint */
                     33: 
                     34: #include <sys/types.h>
                     35: 
                     36: #ifdef HAVE_CONFIG_H
                     37: #include "config.h"
                     38: #endif /* HAVE_CONFIG_H */
                     39: 
                     40: #ifndef HAVE_STRLCPY
                     41: #include "strlcpy-internal.h"
                     42: 
                     43: /*
                     44:  * Copy src to string dst of size siz.  At most siz-1 characters
                     45:  * will be copied.  Always NUL terminates (unless siz == 0).
                     46:  * Returns strlen(src); if retval >= siz, truncation occurred.
                     47:  */
                     48: size_t
                     49: _event_strlcpy(dst, src, siz)
                     50:        char *dst;
                     51:        const char *src;
                     52:        size_t siz;
                     53: {
                     54:        register char *d = dst;
                     55:        register const char *s = src;
                     56:        register size_t n = siz;
                     57: 
                     58:        /* Copy as many bytes as will fit */
                     59:        if (n != 0 && --n != 0) {
                     60:                do {
                     61:                        if ((*d++ = *s++) == 0)
                     62:                                break;
                     63:                } while (--n != 0);
                     64:        }
                     65: 
                     66:        /* Not enough room in dst, add NUL and traverse rest of src */
                     67:        if (n == 0) {
                     68:                if (siz != 0)
                     69:                        *d = '\0';              /* NUL-terminate dst */
                     70:                while (*s++)
                     71:                        ;
                     72:        }
                     73: 
                     74:        return(s - src - 1);    /* count does not include NUL */
                     75: }
                     76: #endif