Implement xstrdup() using strlen()/xmalloc()/memcpy() already

presented in rtld, instead of pulling in libc strdup().

Submitted by:	   bde
MFC after:	   2 weeks

1 files changed, 8 insertions, 7 deletions

diff --git a/libexec/rtld-elf/xmalloc.c b/libexec/rtld-elf/xmalloc.c
index 3783685..178f49b 100644
--- a/libexec/rtld-elf/xmalloc.c
+++ b/libexec/rtld-elf/xmalloc.c
@@ -57,12 +57,13 @@ xmalloc(size_t size)
 }
 
 char *
-xstrdup(const char *s)
+xstrdup(const char *str)
 {
-    char *p = strdup(s);
-    if (p == NULL) {
-	 rtld_fdputstr(STDERR_FILENO, "Out of memory\n");
-	 _exit(1);
-    }
-    return p;
+	char *copy;
+	size_t len;
+
+	len = strlen(str) + 1;
+	copy = xmalloc(len);
+	memcpy(copy, str, len);
+	return (copy);
 }