diff --git a/oemhandler.C b/oemhandler.C
new file mode 100644
index 0000000..ffff6c6
--- /dev/null
+++ b/oemhandler.C
@@ -0,0 +1,91 @@
+#include "oemhandler.h"
+#include <host-ipmid/ipmid-api.h>
+#include <stdio.h>
+#include <string.h>
+
+void register_netfn_oem_partial_esel() __attribute__((constructor));
+
+const char *g_esel_path = "/tmp/";
+uint16_t g_record_id = 0x0100;
+
+
+#define LSMSSWAP(x,y) ((y)<<8|(x))
+
+
+///////////////////////////////////////////////////////////////////////////////
+// For the First partial add eSEL the SEL Record ID and offset 
+// value should be 0x0000. The extended data needs to be in 
+// the form of an IPMI SEL Event Record, with Event sensor type 
+// of 0xDF and Event Message format of 0x04. The returned 
+// Record ID should be used for all partial eSEL adds.
+//
+// This function creates a /tmp/esel# file to store the 
+// incoming partial esel.  It is the role of some other
+// function to commit the error log in to long term 
+// storage.  Likely via the ipmi add_sel command.  
+///////////////////////////////////////////////////////////////////////////////
+ipmi_ret_t ipmi_ibm_oem_partial_esel(ipmi_netfn_t netfn, ipmi_cmd_t cmd, 
+                              ipmi_request_t request, ipmi_response_t response, 
+                              ipmi_data_len_t data_len, ipmi_context_t context)
+{
+    esel_request_t *reqptr = (esel_request_t*) request;
+    FILE *fp;
+    short offset = 0;
+    uint8_t rlen;
+    ipmi_ret_t rc = IPMI_CC_OK;
+    char string[64];
+    const char *pio;
+
+    
+    offset = LSMSSWAP(reqptr->offsetls, reqptr->offsetms);
+
+    snprintf(string, sizeof(string), "%s%s%02x%02x", g_esel_path, "esel", reqptr->selrecordms, reqptr->selrecordls);
+
+
+    // Length is the number of request bytes minus the header itself.
+    // The header contains an extra byte to indicate the start of
+    // the data (so didn't need to worry about word/byte boundaries)
+    // hence the -1...
+    rlen = (*data_len) - (uint8_t) (sizeof(esel_request_t));
+
+
+    printf("IPMI PARTIAL ESEL for %s  Offset = %d Length = %d\n", 
+        string, offset, rlen);
+
+
+    // Rules state for a Partial eSel that the first write of a
+    // new esel will be the sensor data record.  We will use that
+    // to indicate this is a new record rather then an ofset in
+    // my next commit TODO
+    if (offset == 0) {
+        pio = "wb";
+    } else {
+        pio = "rb+";
+    }
+
+    if ((fp = fopen(string, pio)) != NULL) {
+        fseek(fp, offset, SEEK_SET);
+        fwrite(reqptr+1,rlen,1,fp);
+        fclose(fp);
+
+
+        *data_len = sizeof(g_record_id);
+        memcpy(response, &g_record_id, *data_len);
+
+
+    } else {
+        fprintf(stderr, "Error trying to perform %s for esel%s\n",pio, string);
+        rc = IPMI_CC_INVALID;
+        *data_len     = 0;
+    }
+    
+    return rc;
+}
+
+
+void register_netfn_oem_partial_esel()
+{
+    printf("Registering NetFn:[0x%X], Cmd:[0x%X]\n",NETFUN_OEM, IPMI_CMD_PESEL);
+    ipmi_register_callback(NETFUN_OEM, IPMI_CMD_PESEL, NULL, ipmi_ibm_oem_partial_esel);
+    return;
+}