1 files changed, 72 insertions, 0 deletions
diff --git a/src/backend/port/nextstep/dynloader.c b/src/backend/port/nextstep/dynloader.c
new file mode 100644
index 00000000000..af183d436de
--- /dev/null
+++ b/src/backend/port/nextstep/dynloader.c
@@ -0,0 +1,72 @@
+#include <mach-o/rld.h>
+#include <streams/streams.h>
+#include <stdlib.h>
+
+static char* lastError = NULL;
+
+static NXStream* OpenError()
+{
+    return NXOpenMemory(NULL, 0, NX_WRITEONLY);
+}
+
+static void CloseError(NXStream* s)
+{
+    if (s)
+	NXCloseMemory (s, NX_FREEBUFFER);
+}
+
+static void TransferError(NXStream* s)
+{
+    char *buffer;
+    int len, maxlen;
+
+    if (lastError)
+        free (lastError);
+    NXGetMemoryBuffer (s, &buffer, &len, &maxlen);
+    lastError = malloc (len + 1);
+    strcpy (lastError, buffer);
+}
+
+void* next_dlopen(char* name)
+{
+    int rld_success;
+    NXStream* errorStream;
+    char* result = NULL;
+    char **p;
+	
+    errorStream = OpenError();
+    p = calloc (2, sizeof(void*));
+    p[0] = name;
+    rld_success = rld_load(errorStream, NULL, p, NULL);
+    free (p);
+
+    if (!rld_success) {
+	TransferError (errorStream);
+	result = (char*)1;
+    }
+    CloseError (errorStream);
+    return result;
+}
+
+int next_dlclose(void* handle)
+{
+    return 0;
+}
+
+void* next_dlsym (void *handle, char *symbol)
+{
+    NXStream* errorStream = OpenError();
+    char symbuf[1024];
+    unsigned long symref = 0;
+
+    sprintf(symbuf, "_%s", symbol);
+    if (!rld_lookup (errorStream, symbuf, &symref))
+	TransferError(errorStream);
+    CloseError(errorStream);
+    return (void*) symref;
+}
+
+char* next_dlerror(void)
+{
+    return lastError;
+}