Add xstrdup() - like strdup but get fatal error if memory is exhausted.

Avoid duplicates in search path.
ok espie@

3 files changed, 32 insertions, 4 deletions

diff --git a/gnu/usr.bin/ld/etc.c b/gnu/usr.bin/ld/etc.c
index d3716f03ece..1b6aec578c4 100644
--- a/gnu/usr.bin/ld/etc.c
+++ b/gnu/usr.bin/ld/etc.c
@@ -1,4 +1,4 @@
-/* * $OpenBSD: etc.c,v 1.2 1998/03/26 19:46:18 niklas Exp $*/
+/* * $OpenBSD: etc.c,v 1.3 2000/04/24 03:33:27 form Exp $*/
 /*
  */
 
@@ -7,6 +7,21 @@
 #include <string.h>
 
 /*
+ * Like strdup but get fatal error if memory is exhausted.
+ */
+char *
+xstrdup(s)
+	char *s;
+{
+	char *result = strdup(s);
+
+	if (!result)
+		errx(1, "virtual memory exhausted");
+
+	return result;
+}
+
+/*
  * Like malloc but get fatal error if memory is exhausted.
  */
 void *
diff --git a/gnu/usr.bin/ld/ld.h b/gnu/usr.bin/ld/ld.h
index d5e6efabd1d..9eb86a3f806 100644
--- a/gnu/usr.bin/ld/ld.h
+++ b/gnu/usr.bin/ld/ld.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: ld.h,v 1.4 1999/05/10 16:18:33 espie Exp $	*/
+/*	$OpenBSD: ld.h,v 1.5 2000/04/24 03:33:27 form Exp $	*/
 
 /*-
  * This code is derived from software copyrighted by the Free Software
@@ -640,6 +640,7 @@ void	prline_file_name __P((struct file_entry *, FILE *));
 int	do_warnings __P((FILE *));
 
 /* In etc.c: */
+char	*xstrdup __P((char *));
 void	*xmalloc __P((size_t));
 void	*xrealloc __P((void *, size_t));
 char	*concat __P((const char *, const char *, const char *));
diff --git a/gnu/usr.bin/ld/shlib.c b/gnu/usr.bin/ld/shlib.c
index 01343faf557..9c564e631d7 100644
--- a/gnu/usr.bin/ld/shlib.c
+++ b/gnu/usr.bin/ld/shlib.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: shlib.c,v 1.8 2000/01/16 14:31:26 espie Exp $	*/
+/*	$OpenBSD: shlib.c,v 1.9 2000/04/24 03:33:27 form Exp $	*/
 /*	$NetBSD: shlib.c,v 1.13 1998/04/04 01:00:29 fvdl Exp $	*/
 
 /*
@@ -77,10 +77,22 @@ void
 add_search_dir(name)
 	char	*name;
 {
+	int i, len;
+
+	len = strlen(name);
+
+	while (len > 1 && name[len - 1] == '/')
+		--len;
+
+	for (i = 0; i < n_search_dirs; i++)
+		if (strlen(search_dirs[i]) == len &&
+			!strncmp(search_dirs[i], name, len))
+				return;
 	n_search_dirs++;
 	search_dirs = (char **)
 		xrealloc(search_dirs, n_search_dirs * sizeof search_dirs[0]);
-	search_dirs[n_search_dirs - 1] = strdup(name);
+	search_dirs[n_search_dirs - 1] = xmalloc(++len);
+	(void)strlcpy(search_dirs[n_search_dirs - 1], name, len);
 }
 
 void