diff options
Diffstat (limited to 'lib/libc/string/strlcpy.c')
| -rw-r--r-- | lib/libc/string/strlcpy.c | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/lib/libc/string/strlcpy.c b/lib/libc/string/strlcpy.c new file mode 100644 index 00000000000..1a604455991 --- /dev/null +++ b/lib/libc/string/strlcpy.c @@ -0,0 +1,63 @@ +/* $OpenBSD: strlcpy.c,v 1.1 1998/07/01 01:29:45 millert Exp $ */ + +/* + * Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com> + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The name of the author 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 ANY EXPRESS OR IMPLIED WARRANTIES, + * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY + * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL + * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, + * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; + * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR + * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF + * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char *rcsid = "$OpenBSD: strlcpy.c,v 1.1 1998/07/01 01:29:45 millert Exp $"; +#endif /* LIBC_SCCS and not lint */ + +#include <sys/types.h> +#include <string.h> + +/* + * Copy src to string dst of size siz. At most siz-1 characters + * will be copied. Always NUL terminates (unless siz == 0). + * Returns strlen(src); if retval >= siz, truncation occurred. + */ +size_t strlcpy(dst, src, siz) + char *dst; + char *src; + size_t siz; +{ + register char *d = dst; + register const char *s = src; + register size_t n = siz; + + if (n == 0) + return(strlen(s)); + while (*s != '\0') { + if (n != 1) { + *d++ = *s; + n--; + } + s++; + } + *d = '\0'; + + return(s - src); /* count does not include NUL */ +} |