adding create to netcdf integration layer

src/clib/pio_file.c

@@ -187,27 +187,24 @@ PIOc_createfile(int iosysid, int *ncidp, int *iotype, const char *filename,
  * @author Ed Hartnett
  */
 int
-PIOc_create(int iosysid, const char *filename, int cmode, int *ncidp)
+PIOc_create(int iosysid, const char *path, int cmode, int *ncidp)
 {
     int iotype;            /* The PIO IO type. */
+    iosystem_desc_t *ios;  /* Pointer to io system information. */
+    int ret;
 
-    /* Figure out the iotype. */
-    if (cmode & NC_NETCDF4)
-    {
-        if (cmode & NC_MPIIO || cmode & NC_MPIPOSIX)
-            iotype = PIO_IOTYPE_NETCDF4P;
-        else
-            iotype = PIO_IOTYPE_NETCDF4C;
-    }
-    else
-    {
-        if (cmode & NC_PNETCDF || cmode & NC_MPIIO)
-            iotype = PIO_IOTYPE_PNETCDF;
-        else
-            iotype = PIO_IOTYPE_NETCDF;
-    }
+    PLOG((1, "PIOc_create iosysid = %d path = %s cmode = %x", iosysid, path,
+          cmode));
+
+    /* Get the IO system info from the id. */
+    if (!(ios = pio_get_iosystem_from_id(iosysid)))
+        return pio_err(NULL, NULL, PIO_EBADID, __FILE__, __LINE__);
+
+    /* Find the IOTYPE from the mode flag. */
+    if ((ret = find_iotype_from_cmode(cmode, &iotype)))
+        return pio_err(ios, NULL, ret, __FILE__, __LINE__);
 
-    return PIOc_createfile_int(iosysid, ncidp, &iotype, filename, cmode);
+    return PIOc_createfile_int(iosysid, ncidp, &iotype, path, cmode);
 }
 
 /**

src/clib/pio_internal.h

@@ -197,6 +197,9 @@ extern "C" {
     /* Give the mode flag from an open, determine the IOTYPE. */
     int find_iotype_from_omode(int mode, int *iotype);
 
+    /* Give the mode flag from an nc_create call, determine the IOTYPE. */
+    int find_iotype_from_cmode(int cmode, int *iotype);
+
     /* Given PIO type, find MPI type and type size. */
     int find_mpi_type(int pio_type, MPI_Datatype *mpi_type, int *type_size);
 

src/clib/pioc_support.c

@@ -1,7 +1,7 @@
 /** @file
  * Support functions for the PIO library.
  */
-#include <config.h>
+#include "config.h"
 #if PIO_ENABLE_LOGGING
 #include <stdarg.h>
 #include <unistd.h>
@@ -2398,6 +2398,41 @@ find_iotype_from_omode(int mode, int *iotype)
     return PIO_NOERR;
 }
 
+
+/**
+ * Find the appropriate IOTYPE from mode flags to nc_create().
+ *
+ * @param mode the mode flag from nc_create().
+ * @param iotype pointer that gets the IOTYPE.
+ *
+ * @return 0 on success, error code otherwise.
+ * @author Ed Hartnett
+ */
+int
+find_iotype_from_cmode(int cmode, int *iotype)
+{
+    /* Check inputs. */
+    pioassert(iotype, "pointer to iotype must be provided", __FILE__, __LINE__);
+
+    /* Figure out the iotype. */
+    if (cmode & NC_NETCDF4)
+    {
+        if (cmode & NC_MPIIO || cmode & NC_MPIPOSIX)
+            *iotype = PIO_IOTYPE_NETCDF4P;
+        else
+            *iotype = PIO_IOTYPE_NETCDF4C;
+    }
+    else
+    {
+        if (cmode & NC_PNETCDF || cmode & NC_MPIIO)
+            *iotype = PIO_IOTYPE_PNETCDF;
+        else
+            *iotype = PIO_IOTYPE_NETCDF;
+    }
+
+    return PIO_NOERR;
+}
+
 /**
  * Open an existing file using PIO library. This is an internal
  * function. Depending on the value of the retry parameter, a failed

src/ncint/ncintdispatch.c

@@ -20,9 +20,9 @@ int diosysid;
  * functions that make up the NCINT dispatch interface. */
 NC_Dispatch NCINT_dispatcher = {
 
-    NC_FORMATX_NC_HDF4,
+    NC_FORMATX_NC_UDF0,
 
-    NC_RO_create,
+    NC_NCINT_create,
     NC_NCINT_open,
 
     NC_RO_redef,
@@ -170,6 +170,41 @@ NC_NCINT_open(const char *path, int mode, int basepe, size_t *chunksizehintp,
     return NC_NOERR;
 }
 
+int
+NC_NCINT_create(const char* path, int cmode, size_t initialsz, int basepe,
+                size_t *chunksizehintp, void *parameters,
+                const NC_Dispatch *dispatch, NC *nc_file)
+{
+    int iotype;
+    iosystem_desc_t *ios;  /* Pointer to io system information. */
+    int ret;
+
+    LOG((1, "NC_NCINT_create path = %s mode = %x", path, mode));
+
+    /* Get the IO system info from the id. */
+    if (!(ios = pio_get_iosystem_from_id(diosysid)))
+        return pio_err(NULL, NULL, PIO_EBADID, __FILE__, __LINE__);
+
+    /* Turn of NC_UDF0 in the mode flag. */
+    cmode = cmode & ~NC_UDF0;
+
+    /* Find the IOTYPE from the mode flag. */
+    if ((ret = find_iotype_from_omode(mode, &iotype)))
+        return pio_err(ios, NULL, ret, __FILE__, __LINE__);
+
+    /* Add necessary structs to hold netcdf-4 file data. */
+    if ((ret = nc4_nc4f_list_add(nc_file, path, mode)))
+        return ret;
+
+    /* Open the file with PIO. Tell openfile_retry to accept the
+     * externally assigned ncid. */
+    if ((ret = PIOc_createfile_int(diosysid,  &nc_file->ext_ncid, iotype,
+                                   path, cmode)))
+        return ret;
+
+    return PIO_NOERR;
+}
+
 int
 NC_NCINT_abort(int ncid)
 {