Adding upstream version 13.4.upstream/13.4upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 71 insertions, 0 deletions

diff --git a/src/port/strlcpy.c b/src/port/strlcpy.c
new file mode 100644
index 0000000..5ca1b42
--- /dev/null
+++ b/src/port/strlcpy.c
@@ -0,0 +1,71 @@
+/*-------------------------------------------------------------------------
+ *
+ * strlcpy.c
+ *	  strncpy done right
+ *
+ * Portions Copyright (c) 1996-2020, PostgreSQL Global Development Group
+ *
+ *
+ * IDENTIFICATION
+ *	  src/port/strlcpy.c
+ *
+ * This file was taken from OpenBSD and is used on platforms that don't
+ * provide strlcpy().  The OpenBSD copyright terms follow.
+ *-------------------------------------------------------------------------
+ */
+
+/*	$OpenBSD: strlcpy.c,v 1.11 2006/05/05 15:27:38 millert Exp $	*/
+
+/*
+ * Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include "c.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.
+ * Function creation history:  http://www.gratisoft.us/todd/papers/strlcpy.html
+ */
+size_t
+strlcpy(char *dst, const char *src, size_t siz)
+{
+	char	   *d = dst;
+	const char *s = src;
+	size_t		n = siz;
+
+	/* Copy as many bytes as will fit */
+	if (n != 0)
+	{
+		while (--n != 0)
+		{
+			if ((*d++ = *s++) == '\0')
+				break;
+		}
+	}
+
+	/* Not enough room in dst, add NUL and traverse rest of src */
+	if (n == 0)
+	{
+		if (siz != 0)
+			*d = '\0';			/* NUL-terminate dst */
+		while (*s++)
+			;
+	}
+
+	return (s - src - 1);		/* count does not include NUL */
+}