1 files changed, 38 insertions, 0 deletions
diff --git a/newlib/libc/argz/argz_insert.c b/newlib/libc/argz/argz_insert.c
new file mode 100644
index 000000000..af16301c5
--- /dev/null
+++ b/newlib/libc/argz/argz_insert.c
@@ -0,0 +1,38 @@
+/* Copyright (C) 2002 by  Red Hat, Incorporated. All rights reserved.
+ *
+ * Permission to use, copy, modify, and distribute this software
+ * is freely granted, provided that this notice is preserved.
+ */
+
+#include <errno.h>
+#include <sys/types.h>
+#include <string.h>
+#include <stdlib.h>
+#include <argz.h>
+
+error_t
+argz_insert (char **argz, size_t *argz_len, char *before, const char *entry)
+{
+  int len = 0;
+
+  if (before == NULL)
+    argz_add(argz, argz_len, entry);
+
+  if (before < *argz || before >= *argz + *argz_len)
+    return EINVAL;
+
+  while (before != *argz && before[-1])
+    before--;
+
+  len = strlen(entry) + 1;
+
+  if(!(*argz = (char *)realloc(*argz, *argz_len + len)))
+    return ENOMEM;
+  
+  memmove(before + len, before, *argz + *argz_len - before);
+  memcpy(before, entry, len);
+
+  *argz_len += len;
+
+  return 0;
+}