X-Git-Url: http://git.annexia.org/?a=blobdiff_plain;f=ocaml%2Fguestfs_c.c;h=86fa29390d631426e4f233ef207af71c13dd14e3;hb=8c60f5c681b5d7cf90bc798fcaf94cd4e242e27f;hp=291c43085a5ec4b10191f68c9cf5d4dfe7f843bb;hpb=b4d2a01828e5de85e5eee3631f7fe3925a0312ca;p=libguestfs.git

diff --git a/ocaml/guestfs_c.c b/ocaml/guestfs_c.c
index 291c430..86fa293 100644
--- a/ocaml/guestfs_c.c
+++ b/ocaml/guestfs_c.c
@@ -62,28 +62,19 @@ Val_guestfs (guestfs_h *g)
   CAMLreturn (rv);
 }
 
-/* Handle errors. */
-/* XXX Like the current Perl bindings, this is unsafe in a multi-
- * threaded environment.
- */
-static char *last_error = NULL;
-
-static void
-error_handler (guestfs_h *g,
-	       void *data,
-	       const char *msg)
-{
-  if (last_error != NULL) free (last_error);
-  last_error = strdup (msg);
-}
-
 void
 ocaml_guestfs_raise_error (guestfs_h *g, const char *func)
 {
   CAMLparam0 ();
   CAMLlocal1 (v);
+  const char *msg;
 
-  v = caml_copy_string (last_error);
+  msg = guestfs_last_error (g);
+
+  if (msg)
+    v = caml_copy_string (msg);
+  else
+    v = caml_copy_string (func);
   caml_raise_with_arg (*caml_named_value ("ocaml_guestfs_error"), v);
   CAMLnoreturn;
 }
@@ -100,7 +91,7 @@ ocaml_guestfs_create (void)
   if (g == NULL)
     caml_failwith ("failed to create guestfs handle");
 
-  guestfs_set_error_handler (g, error_handler, NULL);
+  guestfs_set_error_handler (g, NULL, NULL);
 
   gv = Val_guestfs (g);
   CAMLreturn (gv);
@@ -120,15 +111,19 @@ ocaml_guestfs_close (value gv)
   CAMLreturn (Val_unit);
 }
 
-/* Copy string array value. */
+/* Copy string array value.
+ * The return value is only 'safe' provided we don't allocate anything
+ * further on the OCaml heap (ie. cannot trigger the OCaml GC) because
+ * that could move the strings around.
+ */
 char **
-ocaml_guestfs_strings_val (value sv)
+ocaml_guestfs_strings_val (guestfs_h *g, value sv)
 {
   CAMLparam1 (sv);
   char **r;
   int i;
 
-  r = malloc (sizeof (char *) * (Wosize_val (sv) + 1));
+  r = guestfs_safe_malloc (g, sizeof (char *) * (Wosize_val (sv) + 1));
   for (i = 0; i < Wosize_val (sv); ++i)
     r[i] = String_val (Field (sv, i));
   r[i] = NULL;