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-rw-r--r--strlcpy.c83
1 files changed, 83 insertions, 0 deletions
diff --git a/strlcpy.c b/strlcpy.c
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+/* $NetBSD: strlcpy.c,v 1.14 2003/10/27 00:12:42 lukem Exp $ */
+/* $OpenBSD: strlcpy.c,v 1.7 2003/04/12 21:56:39 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 TODD C. MILLER DISCLAIMS ALL
+ * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL TODD C. MILLER 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.
+ */
+
+#if HAVE_NBTOOL_CONFIG_H
+#include "nbtool_config.h"
+#endif
+
+#include <sys/cdefs.h>
+#if defined(LIBC_SCCS) && !defined(lint)
+__RCSID("$NetBSD: strlcpy.c,v 1.14 2003/10/27 00:12:42 lukem Exp $");
+#endif /* LIBC_SCCS and not lint */
+
+#ifdef _LIBC
+#include "namespace.h"
+#endif
+#include <sys/types.h>
+#include <assert.h>
+#include <string.h>
+
+#ifdef _LIBC
+# ifdef __weak_alias
+__weak_alias(strlcpy, _strlcpy)
+# endif
+#endif
+
+#if !HAVE_STRLCPY
+/*
+ * 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
+#ifdef _LIBC
+_strlcpy(dst, src, siz)
+#else
+strlcpy(dst, src, siz)
+#endif
+ char *dst;
+ const char *src;
+ size_t siz;
+{
+ char *d = dst;
+ const char *s = src;
+ size_t n = siz;
+
+ _DIAGASSERT(dst != NULL);
+ _DIAGASSERT(src != NULL);
+
+ /* Copy as many bytes as will fit */
+ if (n != 0 && --n != 0) {
+ do {
+ if ((*d++ = *s++) == 0)
+ break;
+ } while (--n != 0);
+ }
+
+ /* 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 */
+}
+#endif