Merge pull request #2029 in HDFFV/hdf5 from ~CHOGAN/hdf5:feature/cx_lcpl to develop

* commit '4ce9c10c568ff81ebd4eb7585039cbe3c40d1718':
  Add documentation for H5CX_get_ohdr_flags
  Add object header flags to API context
  Use major error code of calling package
  Handle H5CX_state_t for lcpl
  Add character encoding to lcpl context
  Change LC property name from 'create_intermediate_group' to 'intermediate_group'
  Use API context to store/retrieve LCPL when creating intermediate groups

11 files changed, 285 insertions, 17 deletions

diff --git a/src/H5CX.c b/src/H5CX.c
index 96c1d72..649bd8f 100644
--- a/src/H5CX.c
+++ b/src/H5CX.c
@@ -181,6 +181,10 @@ typedef struct H5CX_t {
     hid_t dxpl_id;              /* DXPL ID for API operation */
     H5P_genplist_t *dxpl;       /* Dataset Transfer Property List */
 
+    /* LCPL */
+    hid_t lcpl_id;              /* LCPL ID for API operation */
+    H5P_genplist_t *lcpl;       /* Link Creation Property List */
+
     /* LAPL */
     hid_t lapl_id;              /* LAPL ID for API operation */
     H5P_genplist_t *lapl;       /* Link Access Property List */
@@ -278,6 +282,12 @@ typedef struct H5CX_t {
 #endif /* H5_HAVE_INSTRUMENTED_LIBRARY */
 #endif /* H5_HAVE_PARALLEL */
 
+    /* Cached LCPL properties */
+    H5T_cset_t encoding;     /* Link name character encoding */
+    hbool_t encoding_valid;  /* Whether link name character encoding is valid */
+    unsigned intermediate_group;       /* Whether to create intermediate groups */
+    hbool_t intermediate_group_valid;  /* Whether create intermediate group flag is valid */
+
     /* Cached LAPL properties */
     size_t nlinks;              /* Number of soft / UD links to traverse (H5L_ACS_NLINKS_NAME) */
     hbool_t nlinks_valid;       /* Whether number of soft / UD links to traverse is valid */
@@ -285,6 +295,8 @@ typedef struct H5CX_t {
     /* Cached DCPL properties */
     hbool_t   do_min_dset_ohdr;   /* Whether to minimize dataset object header */
     hbool_t   do_min_dset_ohdr_valid;   /* Whether minimize dataset object header flag is valid */
+    uint8_t ohdr_flags;  /* Object header flags */
+    hbool_t ohdr_flags_valid;  /* Whether the object headers flags are valid */
 
     /* Cached DAPL properties */
     const char *extfile_prefix;         /* Prefix for external file                      */
@@ -346,6 +358,13 @@ typedef struct H5CX_dxpl_cache_t {
     H5T_conv_cb_t dt_conv_cb;       /* Datatype conversion struct (H5D_XFER_CONV_CB_NAME) */
 } H5CX_dxpl_cache_t;
 
+/* Typedef for cached default link creation property list information */
+/* (Same as the cached DXPL struct, above, except for the default LCPL) */
+typedef struct H5CX_lcpl_cache_t {
+    H5T_cset_t encoding;         /* Link name character encoding */
+    unsigned intermediate_group; /* Whether to create intermediate groups  */
+} H5CX_lcpl_cache_t;
+
 /* Typedef for cached default link access property list information */
 /* (Same as the cached DXPL struct, above, except for the default LAPL) */
 typedef struct H5CX_lapl_cache_t {
@@ -356,6 +375,7 @@ typedef struct H5CX_lapl_cache_t {
 /* (Same as the cached DXPL struct, above, except for the default DCPL) */
 typedef struct H5CX_dcpl_cache_t {
     hbool_t do_min_dset_ohdr;   /* Whether to minimize dataset object header */
+    uint8_t ohdr_flags;  /* Object header flags */
 } H5CX_dcpl_cache_t;
 
 /* Typedef for cached default dataset access property list information */
@@ -401,6 +421,9 @@ static H5CX_node_t *H5CX_head_g = NULL;         /* Pointer to head of context st
 /* Define a "default" dataset transfer property list cache structure to use for default DXPLs */
 static H5CX_dxpl_cache_t H5CX_def_dxpl_cache;
 
+/* Define a "default" link creation property list cache structure to use for default LCPLs */
+static H5CX_lcpl_cache_t H5CX_def_lcpl_cache;
+
 /* Define a "default" link access property list cache structure to use for default LAPLs */
 static H5CX_lapl_cache_t H5CX_def_lapl_cache;
 
@@ -435,6 +458,7 @@ herr_t
 H5CX__init_package(void)
 {
     H5P_genplist_t *dx_plist;           /* Data transfer property list */
+    H5P_genplist_t *lc_plist;           /* Link creation property list */
     H5P_genplist_t *la_plist;           /* Link access property list */
     H5P_genplist_t *dc_plist;           /* Dataset creation property list */
     H5P_genplist_t *da_plist;           /* Dataset access property list */
@@ -525,6 +549,23 @@ H5CX__init_package(void)
     if(H5P_get(dx_plist, H5D_XFER_CONV_CB_NAME, &H5CX_def_dxpl_cache.dt_conv_cb) < 0)
         HGOTO_ERROR(H5E_CONTEXT, H5E_CANTGET, FAIL, "Can't retrieve datatype conversion exception callback")
 
+    /* Reset the "default LCPL cache" information */
+    HDmemset(&H5CX_def_lcpl_cache, 0, sizeof(H5CX_lcpl_cache_t));
+
+    /* Get the default LCPL cache information */
+
+    /* Get the default link creation property list */
+    if(NULL == (lc_plist = (H5P_genplist_t *)H5I_object(H5P_LINK_CREATE_DEFAULT)))
+        HGOTO_ERROR(H5E_CONTEXT, H5E_BADTYPE, FAIL, "not a link creation property list")
+
+    /* Get link name character encoding */
+    if(H5P_get(lc_plist, H5P_STRCRT_CHAR_ENCODING_NAME, &H5CX_def_lcpl_cache.encoding) < 0)
+        HGOTO_ERROR(H5E_CONTEXT, H5E_CANTGET, FAIL, "Can't retrieve link name encoding")
+
+    /* Get flag whether to create intermediate groups */
+    if(H5P_get(lc_plist, H5L_CRT_INTERMEDIATE_GROUP_NAME, &H5CX_def_lcpl_cache.intermediate_group) < 0)
+        HGOTO_ERROR(H5E_CONTEXT, H5E_CANTGET, FAIL, "Can't retrieve intermediate group creation flag")
+
     /* Reset the "default LAPL cache" information */
     HDmemset(&H5CX_def_lapl_cache, 0, sizeof(H5CX_lapl_cache_t));
 
@@ -552,6 +593,10 @@ H5CX__init_package(void)
     if(H5P_get(dc_plist, H5D_CRT_MIN_DSET_HDR_SIZE_NAME, &H5CX_def_dcpl_cache.do_min_dset_ohdr) < 0)
         HGOTO_ERROR(H5E_CONTEXT, H5E_CANTGET, FAIL, "Can't retrieve dataset minimize flag")
 
+    /* Get object header flags */
+    if(H5P_get(dc_plist, H5O_CRT_OHDR_FLAGS_NAME, &H5CX_def_dcpl_cache.ohdr_flags) < 0)
+        HGOTO_ERROR(H5E_CONTEXT, H5E_CANTGET, FAIL, "Can't retrieve object header flags")
+
     /* Reset the "default DAPL cache" information */
     HDmemset(&H5CX_def_dapl_cache, 0, sizeof(H5CX_dapl_cache_t));
 
@@ -710,6 +755,7 @@ H5CX__push_common(H5CX_node_t *cnode)
     cnode->ctx.dxpl_id = H5P_DATASET_XFER_DEFAULT;
     cnode->ctx.dcpl_id = H5P_DATASET_CREATE_DEFAULT;
     cnode->ctx.dapl_id = H5P_DATASET_ACCESS_DEFAULT;
+    cnode->ctx.lcpl_id = H5P_LINK_CREATE_DEFAULT;
     cnode->ctx.lapl_id = H5P_LINK_ACCESS_DEFAULT;
     cnode->ctx.fapl_id = H5P_FILE_ACCESS_DEFAULT;
     cnode->ctx.tag = H5AC__INVALID_TAG;
@@ -820,6 +866,18 @@ H5CX_retrieve_state(H5CX_state_t **api_state)
     if(NULL == (*api_state = H5FL_CALLOC(H5CX_state_t)))
         HGOTO_ERROR(H5E_CONTEXT, H5E_CANTALLOC, FAIL, "unable to allocate new API context state")
 
+    /* Check for non-default DCPL */
+    if(H5P_DATASET_CREATE_DEFAULT != (*head)->ctx.dcpl_id) {
+        /* Retrieve the DCPL property list */
+        H5CX_RETRIEVE_PLIST(dcpl, FAIL)
+
+        /* Copy the DCPL ID */
+        if(((*api_state)->dcpl_id = H5P_copy_plist((H5P_genplist_t *)(*head)->ctx.dcpl, FALSE)) < 0)
+            HGOTO_ERROR(H5E_CONTEXT, H5E_CANTCOPY, FAIL, "can't copy property list")
+    } /* end if */
+    else
+        (*api_state)->dcpl_id = H5P_DATASET_CREATE_DEFAULT;
+
     /* Check for non-default DXPL */
     if(H5P_DATASET_XFER_DEFAULT != (*head)->ctx.dxpl_id) {
         /* Retrieve the DXPL property list */
@@ -844,6 +902,18 @@ H5CX_retrieve_state(H5CX_state_t **api_state)
     else
         (*api_state)->lapl_id = H5P_LINK_ACCESS_DEFAULT;
 
+    /* Check for non-default LCPL */
+    if(H5P_LINK_CREATE_DEFAULT != (*head)->ctx.lcpl_id) {
+        /* Retrieve the LCPL property list */
+        H5CX_RETRIEVE_PLIST(lcpl, FAIL)
+
+        /* Copy the LCPL ID */
+        if(((*api_state)->lcpl_id = H5P_copy_plist((H5P_genplist_t *)(*head)->ctx.lcpl, FALSE)) < 0)
+            HGOTO_ERROR(H5E_CONTEXT, H5E_CANTCOPY, FAIL, "can't copy property list")
+    } /* end if */
+    else
+        (*api_state)->lcpl_id = H5P_LINK_CREATE_DEFAULT;
+
     /* Keep a reference to the current VOL wrapping context */
     (*api_state)->vol_wrap_ctx = (*head)->ctx.vol_wrap_ctx;
     if(NULL != (*api_state)->vol_wrap_ctx)
@@ -916,6 +986,10 @@ H5CX_restore_state(const H5CX_state_t *api_state)
     HDassert(head && *head);
     HDassert(api_state);
 
+    /* Restore the DCPL info */
+    (*head)->ctx.dcpl_id = api_state->dcpl_id;
+    (*head)->ctx.dcpl = NULL;
+
     /* Restore the DXPL info */
     (*head)->ctx.dxpl_id = api_state->dxpl_id;
     (*head)->ctx.dxpl = NULL;
@@ -924,6 +998,10 @@ H5CX_restore_state(const H5CX_state_t *api_state)
     (*head)->ctx.lapl_id = api_state->lapl_id;
     (*head)->ctx.lapl = NULL;
 
+    /* Restore the LCPL info */
+    (*head)->ctx.lcpl_id = api_state->lcpl_id;
+    (*head)->ctx.lcpl = NULL;
+
     /* Restore the VOL wrapper context */
     (*head)->ctx.vol_wrap_ctx = api_state->vol_wrap_ctx;
 
@@ -964,6 +1042,11 @@ H5CX_free_state(H5CX_state_t *api_state)
     /* Sanity check */
     HDassert(api_state);
 
+    /* Release the DCPL */
+    if(api_state->dcpl_id != H5P_DATASET_CREATE_DEFAULT)
+        if(H5I_dec_ref(api_state->dcpl_id) < 0)
+            HGOTO_ERROR(H5E_CONTEXT, H5E_CANTDEC, FAIL, "can't decrement refcount on DCPL")
+
     /* Release the DXPL */
     if(api_state->dxpl_id != H5P_DATASET_XFER_DEFAULT)
         if(H5I_dec_ref(api_state->dxpl_id) < 0)
@@ -974,6 +1057,11 @@ H5CX_free_state(H5CX_state_t *api_state)
         if(H5I_dec_ref(api_state->lapl_id) < 0)
             HGOTO_ERROR(H5E_CONTEXT, H5E_CANTDEC, FAIL, "can't decrement refcount on LAPL")
 
+    /* Release the LCPL */
+    if(api_state->lcpl_id != H5P_LINK_CREATE_DEFAULT)
+        if(H5I_dec_ref(api_state->lcpl_id) < 0)
+            HGOTO_ERROR(H5E_CONTEXT, H5E_CANTDEC, FAIL, "can't decrement refcount on LCPL")
+
     /* Release the VOL wrapper context */
     if(api_state->vol_wrap_ctx)
         if(H5VL_dec_vol_wrapper(api_state->vol_wrap_ctx) < 0)
@@ -1119,6 +1207,35 @@ done:
 
 
 /*-------------------------------------------------------------------------
+ * Function:    H5CX_set_lcpl
+ *
+ * Purpose:     Sets the LCPL for the current API call context.
+ *
+ * Return:      <none>
+ *
+ * Programmer:  Chris Hogan
+ *              October 28, 2019
+ *
+ *-------------------------------------------------------------------------
+ */
+void
+H5CX_set_lcpl(hid_t lcpl_id)
+{
+    H5CX_node_t **head = H5CX_get_my_context();  /* Get the pointer to the head of the API context, for this thread */
+
+    FUNC_ENTER_NOAPI_NOINIT_NOERR
+
+    /* Sanity check */
+    HDassert(*head);
+
+    /* Set the API context's LCPL to a new value */
+    (*head)->ctx.lcpl_id = lcpl_id;
+
+    FUNC_LEAVE_NOAPI_VOID
+} /* end H5CX_set_lcpl() */
+
+
+/*-------------------------------------------------------------------------
  * Function:    H5CX_set_lapl
  *
  * Purpose:     Sets the LAPL for the current API call context.
@@ -2371,6 +2488,76 @@ done:
 
 
 /*-------------------------------------------------------------------------
+ * Function:    H5CX_get_encoding
+ *
+ * Purpose:     Retrieves the character encoding for the current API call context.
+ *
+ * Return:      Non-negative on success / Negative on failure
+ *
+ * Programmer:  Gerd Heber
+ *              October 21, 2019
+ *
+ *-------------------------------------------------------------------------
+ */
+herr_t
+H5CX_get_encoding(H5T_cset_t* encoding)
+{
+    H5CX_node_t **head = H5CX_get_my_context();  /* Get the pointer to the head of the API context, for this thread */
+    herr_t ret_value = SUCCEED;         /* Return value */
+
+    FUNC_ENTER_NOAPI(FAIL)
+
+    /* Sanity check */
+    HDassert(encoding);
+    HDassert(head && *head);
+    HDassert(H5P_DEFAULT != (*head)->ctx.lcpl_id);
+
+    H5CX_RETRIEVE_PROP_VALID(lcpl, H5P_LINK_CREATE_DEFAULT, H5P_STRCRT_CHAR_ENCODING_NAME, encoding)
+
+    /* Get the value */
+    *encoding = (*head)->ctx.encoding;
+
+done:
+    FUNC_LEAVE_NOAPI(ret_value)
+} /* end H5CX_get_encoding() */
+
+
+/*-------------------------------------------------------------------------
+ * Function:    H5CX_get_intermediate_group
+ *
+ * Purpose:     Retrieves the create intermediate group flag for the current API call context.
+ *
+ * Return:      Non-negative on success / Negative on failure
+ *
+ * Programmer:  Gerd Heber
+ *              October 21, 2019
+ *
+ *-------------------------------------------------------------------------
+ */
+herr_t
+H5CX_get_intermediate_group(unsigned* crt_intermed_group)
+{
+    H5CX_node_t **head = H5CX_get_my_context();  /* Get the pointer to the head of the API context, for this thread */
+    herr_t ret_value = SUCCEED;         /* Return value */
+
+    FUNC_ENTER_NOAPI(FAIL)
+
+    /* Sanity check */
+    HDassert(crt_intermed_group);
+    HDassert(head && *head);
+    HDassert(H5P_DEFAULT != (*head)->ctx.lcpl_id);
+
+    H5CX_RETRIEVE_PROP_VALID(lcpl, H5P_LINK_CREATE_DEFAULT, H5L_CRT_INTERMEDIATE_GROUP_NAME, intermediate_group)
+
+    /* Get the value */
+    *crt_intermed_group = (*head)->ctx.intermediate_group;
+
+done:
+    FUNC_LEAVE_NOAPI(ret_value)
+} /* end H5CX_get_create_intermediate_group() */
+
+
+/*-------------------------------------------------------------------------
  * Function:    H5CX_get_nlinks
  *
  * Purpose:     Retrieves the # of soft / UD links to traverse for the current API call context.
@@ -3284,6 +3471,41 @@ done:
 
 
 /*-------------------------------------------------------------------------
+ * Function:    H5CX_get_ohdr_flags
+ *
+ * Purpose:     Retrieves the object header flags for the current API call context.
+ *
+ * Return:      Non-negative on success / Negative on failure
+ *
+ * Programmer:  Chris Hogan
+ *              November 15, 2019
+ *
+ *-------------------------------------------------------------------------
+ */
+herr_t
+H5CX_get_ohdr_flags(uint8_t *ohdr_flags)
+{
+    H5CX_node_t **head = H5CX_get_my_context();  /* Get the pointer to the head of the API context, for this thread */
+    herr_t ret_value = SUCCEED;         /* Return value */
+
+    FUNC_ENTER_NOAPI(FAIL)
+
+    /* Sanity check */
+    HDassert(ohdr_flags);
+    HDassert(head && *head);
+    HDassert(H5P_DEFAULT != (*head)->ctx.dcpl_id);
+
+    H5CX_RETRIEVE_PROP_VALID(dcpl, H5P_DATASET_CREATE_DEFAULT, H5O_CRT_OHDR_FLAGS_NAME, ohdr_flags)
+
+    /* Get the value */
+    *ohdr_flags = (*head)->ctx.ohdr_flags;
+
+done:
+    FUNC_LEAVE_NOAPI(ret_value)
+} /* End H5CX_get_ohdr_flags() */
+
+
+/*-------------------------------------------------------------------------
  * Function:    H5CX__pop_common
  *
  * Purpose:     Common code for popping the context for an API call.
diff --git a/src/H5CXprivate.h b/src/H5CXprivate.h
index 2f86adf..2ae71f3 100644
--- a/src/H5CXprivate.h
+++ b/src/H5CXprivate.h
@@ -41,8 +41,10 @@
 
 /* API context state */
 typedef struct H5CX_state_t {
+    hid_t dcpl_id;              /* DCPL for operation */
     hid_t dxpl_id;              /* DXPL for operation */
     hid_t lapl_id;              /* LAPL for operation */
+    hid_t lcpl_id;              /* LCPL for operation */
     void *vol_wrap_ctx;         /* VOL connector's "wrap context" for creating IDs */
     H5VL_connector_prop_t vol_connector_prop;   /* VOL connector property */
 
@@ -77,6 +79,7 @@ H5_DLL herr_t H5CX_free_state(H5CX_state_t *api_state);
 
 /* "Setter" routines for API context info */
 H5_DLL void H5CX_set_dxpl(hid_t dxpl_id);
+H5_DLL void H5CX_set_lcpl(hid_t lcpl_id);
 H5_DLL void H5CX_set_lapl(hid_t lapl_id);
 H5_DLL void H5CX_set_dcpl(hid_t dcpl_id);
 H5_DLL herr_t H5CX_set_libver_bounds(H5F_t *f);
@@ -122,11 +125,16 @@ H5_DLL herr_t H5CX_get_data_transform(H5Z_data_xform_t **data_transform);
 H5_DLL herr_t H5CX_get_vlen_alloc_info(H5T_vlen_alloc_info_t *vl_alloc_info);
 H5_DLL herr_t H5CX_get_dt_conv_cb(H5T_conv_cb_t *cb_struct);
 
+/* "Getter" routines for LCPL properties cached in API context */
+H5_DLL herr_t H5CX_get_encoding(H5T_cset_t* encoding);
+H5_DLL herr_t H5CX_get_intermediate_group(unsigned* crt_intermed_group);
+
 /* "Getter" routines for LAPL properties cached in API context */
 H5_DLL herr_t H5CX_get_nlinks(size_t *nlinks);
 
 /* "Getter" routines for DCPL properties cached in API context */
 H5_DLL herr_t H5CX_get_dset_min_ohdr_flag(hbool_t *dset_min_ohdr_flag);
+H5_DLL herr_t H5CX_get_ohdr_flags(uint8_t *ohdr_flags);
 
 /* "Getter" routines for DAPL properties cached in API context */
 H5_DLL herr_t H5CX_get_ext_file_prefix(const char **prefix_extfile);
diff --git a/src/H5D.c b/src/H5D.c
index 9d811c6..a2e6f0a 100644
--- a/src/H5D.c
+++ b/src/H5D.c
@@ -137,6 +137,9 @@ H5Dcreate2(hid_t loc_id, const char *name, hid_t type_id, hid_t space_id,
     /* Set the DCPL for the API context */
     H5CX_set_dcpl(dcpl_id);
 
+    /* Set the LCPL for the API context */
+    H5CX_set_lcpl(lcpl_id);
+
     /* Verify access property list and set up collective metadata if appropriate */
     if(H5CX_set_apl(&dapl_id, H5P_CLS_DACC, loc_id, TRUE) < 0)
         HGOTO_ERROR(H5E_DATASET, H5E_CANTSET, H5I_INVALID_HID, "can't set access property list info")
diff --git a/src/H5G.c b/src/H5G.c
index fdf613c..85515d3 100644
--- a/src/H5G.c
+++ b/src/H5G.c
@@ -345,6 +345,9 @@ H5Gcreate2(hid_t loc_id, const char *name, hid_t lcpl_id, hid_t gcpl_id,
         if(TRUE != H5P_isa_class(gcpl_id, H5P_GROUP_CREATE))
             HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, H5I_INVALID_HID, "not a group creation property list")
 
+    /* Set the LCPL for the API context */
+    H5CX_set_lcpl(lcpl_id);
+
     /* Verify access property list and set up collective metadata if appropriate */
     if(H5CX_set_apl(&gapl_id, H5P_CLS_GACC, loc_id, TRUE) < 0)
         HGOTO_ERROR(H5E_SYM, H5E_CANTSET, H5I_INVALID_HID, "can't set access property list info")
diff --git a/src/H5L.c b/src/H5L.c
index 1e554a9..c8c8cde 100644
--- a/src/H5L.c
+++ b/src/H5L.c
@@ -299,6 +299,9 @@ H5Lmove(hid_t src_loc_id, const char *src_name, hid_t dst_loc_id,
     if(H5P_DEFAULT == lcpl_id)
         lcpl_id = H5P_LINK_CREATE_DEFAULT;
 
+    /* Set the LCPL for the API context */
+    H5CX_set_lcpl(lcpl_id);
+
     /* Verify access property list and set up collective metadata if appropriate */
     if(H5CX_set_apl(&lapl_id, H5P_CLS_LACC, 
             ((src_loc_id != H5L_SAME_LOC) ? src_loc_id : dst_loc_id), TRUE) < 0)
@@ -386,6 +389,9 @@ H5Lcopy(hid_t src_loc_id, const char *src_name, hid_t dst_loc_id,
     if(H5P_DEFAULT == lcpl_id)
         lcpl_id = H5P_LINK_CREATE_DEFAULT;
 
+    /* Set the LCPL for the API context */
+    H5CX_set_lcpl(lcpl_id);
+
     /* Verify access property list and set up collective metadata if appropriate */
     if(H5CX_set_apl(&lapl_id, H5P_CLS_LACC, 
             ((src_loc_id != H5L_SAME_LOC) ? src_loc_id : dst_loc_id), TRUE) < 0)
@@ -473,10 +479,13 @@ H5Lcreate_soft(const char *link_target, hid_t link_loc_id, const char *link_name
     if(lcpl_id != H5P_DEFAULT && (TRUE != H5P_isa_class(lcpl_id, H5P_LINK_CREATE)))
         HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a link creation property list")
 
-    /* Check the group access property list */
+    /* Get the link creation property list */
     if(H5P_DEFAULT == lcpl_id)
         lcpl_id = H5P_LINK_CREATE_DEFAULT;
 
+    /* Set the LCPL for the API context */
+    H5CX_set_lcpl(lcpl_id);
+
     /* Set location fields */
     loc_params.type                         = H5VL_OBJECT_BY_NAME;
     loc_params.loc_data.loc_by_name.name    = link_name;
@@ -549,6 +558,9 @@ H5Lcreate_hard(hid_t cur_loc_id, const char *cur_name,
     if(H5P_DEFAULT == lcpl_id)
         lcpl_id = H5P_LINK_CREATE_DEFAULT;
 
+    /* Set the LCPL for the API context */
+    H5CX_set_lcpl(lcpl_id);
+
     /* Verify access property list and set up collective metadata if appropriate */
     if(H5CX_set_apl(&lapl_id, H5P_CLS_LACC, cur_loc_id, TRUE) < 0)
         HGOTO_ERROR(H5E_LINK, H5E_CANTSET, FAIL, "can't set access property list info")
@@ -635,10 +647,13 @@ H5Lcreate_ud(hid_t link_loc_id, const char *link_name, H5L_type_t link_type,
     if(!udata && udata_size)
         HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "udata cannot be NULL if udata_size is non-zero")
 
-    /* Check the group access property list */
+    /* Get the link creation property list */
     if(H5P_DEFAULT == lcpl_id)
         lcpl_id = H5P_LINK_CREATE_DEFAULT;
 
+    /* Set the LCPL for the API context */
+    H5CX_set_lcpl(lcpl_id);
+
     /* Verify access property list and set up collective metadata if appropriate */
     if(H5CX_set_apl(&lapl_id, H5P_CLS_LACC, link_loc_id, TRUE) < 0)
         HGOTO_ERROR(H5E_LINK, H5E_CANTSET, FAIL, "can't set access property list info")
@@ -1850,8 +1865,8 @@ H5L__link_cb(H5G_loc_t *grp_loc/*in*/, const char *name, const H5O_link_t H5_ATT
     /* Check for non-default link creation properties */
     if(udata->lc_plist) {
         /* Get character encoding property */
-        if(H5P_get(udata->lc_plist, H5P_STRCRT_CHAR_ENCODING_NAME, &udata->lnk->cset) < 0)
-            HGOTO_ERROR(H5E_LINK, H5E_CANTGET, FAIL, "can't get property value for character encoding")
+        if(H5CX_get_encoding(&udata->lnk->cset) < 0)
+            HGOTO_ERROR(H5E_LINK, H5E_CANTGET, FAIL, "can't get 'character set' property")
     } /* end if */
     else
         udata->lnk->cset = H5F_DEFAULT_CSET;   /* Default character encoding for link */
@@ -1992,8 +2007,8 @@ H5L__create_real(const H5G_loc_t *link_loc, const char *link_name,
             HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a property list")
 
         /* Get intermediate group creation property */
-        if(H5P_get(lc_plist, H5L_CRT_INTERMEDIATE_GROUP_NAME, &crt_intmd_group) < 0)
-            HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, FAIL, "can't get property value for creating missing groups")
+        if(H5CX_get_intermediate_group(&crt_intmd_group) < 0)
+            HGOTO_ERROR(H5E_LINK, H5E_CANTGET, FAIL, "can't get 'create intermediate group' property")
 
         if(crt_intmd_group > 0)
             target_flags |= H5G_CRT_INTMD_GROUP;
@@ -2881,7 +2896,7 @@ H5L_move(const H5G_loc_t *src_loc, const char *src_name, const H5G_loc_t *dst_lo
             HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a property list")
 
         /* Get intermediate group creation property */
-        if(H5P_get(lc_plist, H5L_CRT_INTERMEDIATE_GROUP_NAME, &crt_intmd_group) < 0)
+        if(H5CX_get_intermediate_group(&crt_intmd_group) < 0)
             HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, FAIL, "can't get property value for creating missing groups")
 
         /* Set target flags for source and destination */
@@ -2889,7 +2904,7 @@ H5L_move(const H5G_loc_t *src_loc, const char *src_name, const H5G_loc_t *dst_lo
             dst_target_flags |= H5G_CRT_INTMD_GROUP;
 
         /* Get character encoding property */
-        if(H5P_get(lc_plist, H5P_STRCRT_CHAR_ENCODING_NAME, &char_encoding) < 0)
+        if(H5CX_get_encoding(&char_encoding) < 0)
             HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, FAIL, "can't get property value for character encoding")
     } /* end if */
 
diff --git a/src/H5Lexternal.c b/src/H5Lexternal.c
index 3c4ffcc..e075ed7 100644
--- a/src/H5Lexternal.c
+++ b/src/H5Lexternal.c
@@ -364,10 +364,13 @@ H5Lcreate_external(const char *file_name, const char *obj_name,
     if(!link_name || !*link_name)
         HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "no link name specified")
 
-    /* Check the group access property list */
+    /* Get the link creation property list */
     if(H5P_DEFAULT == lcpl_id)
         lcpl_id = H5P_LINK_CREATE_DEFAULT;
 
+    /* Set the LCPL for the API context */
+    H5CX_set_lcpl(lcpl_id);
+
     /* Get normalized copy of the link target */
     if(NULL == (norm_obj_name = H5G_normalize(obj_name)))
         HGOTO_ERROR(H5E_LINK, H5E_BADVALUE, FAIL, "can't normalize object name")
diff --git a/src/H5O.c b/src/H5O.c
index ffb49d9..b79914c 100644
--- a/src/H5O.c
+++ b/src/H5O.c
@@ -360,10 +360,13 @@ H5Olink(hid_t obj_id, hid_t new_loc_id, const char *new_name, hid_t lcpl_id,
     if(lcpl_id != H5P_DEFAULT && (TRUE != H5P_isa_class(lcpl_id, H5P_LINK_CREATE)))
         HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a link creation property list")
 
-    /* Check the group access property list */
+    /* Get the link creation property list */
     if(H5P_DEFAULT == lcpl_id)
         lcpl_id = H5P_LINK_CREATE_DEFAULT;
 
+    /* Set the LCPL for the API context */
+    H5CX_set_lcpl(lcpl_id);
+
     /* Verify access property list and set up collective metadata if appropriate */
     if(H5CX_set_apl(&lapl_id, H5P_CLS_LACC, obj_id, TRUE) < 0)
         HGOTO_ERROR(H5E_OHDR, H5E_CANTSET, FAIL, "can't set access property list info")
diff --git a/src/H5Ocopy.c b/src/H5Ocopy.c
index 6e0db25..55013c9 100644
--- a/src/H5Ocopy.c
+++ b/src/H5Ocopy.c
@@ -227,6 +227,9 @@ H5Ocopy(hid_t src_loc_id, const char *src_name, hid_t dst_loc_id,
         if(TRUE != H5P_isa_class(ocpypl_id, H5P_OBJECT_COPY))
             HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not object copy property list")
 
+    /* Set the LCPL for the API context */
+    H5CX_set_lcpl(lcpl_id);
+
     /* Set up collective metadata if appropriate */
     if(H5CX_set_loc(src_loc_id) < 0)
         HGOTO_ERROR(H5E_OHDR, H5E_CANTSET, FAIL, "can't set collective metadata read info")
diff --git a/src/H5Oint.c b/src/H5Oint.c
index ecf347c..b97ff30 100644
--- a/src/H5Oint.c
+++ b/src/H5Oint.c
@@ -352,8 +352,18 @@ H5O__create_ohdr(H5F_t *f, hid_t ocpl_id)
         HGOTO_ERROR(H5E_PLIST, H5E_BADTYPE, NULL, "not a property list")
 
     /* Get any object header status flags set by properties */
-    if(H5P_get(oc_plist, H5O_CRT_OHDR_FLAGS_NAME, &oh_flags) < 0)
-        HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, NULL, "can't get object header flags")
+    if(H5P_DATASET_CREATE_DEFAULT == ocpl_id)
+    {
+        /* If the OCPL is the default DCPL, we can get the header flags from the
+         * API context. Otherwise we have to call H5P_get */
+        if(H5CX_get_ohdr_flags(&oh_flags) < 0)
+            HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, NULL, "can't get object header flags")
+    }
+    else
+    {
+        if(H5P_get(oc_plist, H5O_CRT_OHDR_FLAGS_NAME, &oh_flags) < 0)
+            HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, NULL, "can't get object header flags")
+    }
 
     if(H5O_set_version(f, oh, oh_flags, H5F_STORE_MSG_CRT_IDX(f)) < 0)
         HGOTO_ERROR(H5E_OHDR, H5E_CANTSET, NULL, "can't set version of object header")
diff --git a/src/H5Tcommit.c b/src/H5Tcommit.c
index e582995..e5d12c0 100644
--- a/src/H5Tcommit.c
+++ b/src/H5Tcommit.c
@@ -137,6 +137,9 @@ H5Tcommit2(hid_t loc_id, const char *name, hid_t type_id, hid_t lcpl_id,
         if(TRUE != H5P_isa_class(tcpl_id, H5P_DATATYPE_CREATE))
             HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not datatype creation property list")
 
+    /* Set the LCPL for the API context */
+    H5CX_set_lcpl(lcpl_id);
+
     /* Verify access property list and set up collective metadata if appropriate */
     if(H5CX_set_apl(&tapl_id, H5P_CLS_TACC, loc_id, TRUE) < 0)
         HGOTO_ERROR(H5E_DATATYPE, H5E_CANTSET, FAIL, "can't set access property list info")
diff --git a/src/H5VLnative_link.c b/src/H5VLnative_link.c
index 5d5935d..2a8c27a 100644
--- a/src/H5VLnative_link.c
+++ b/src/H5VLnative_link.c
@@ -43,15 +43,10 @@ H5VL__native_link_create(H5VL_link_create_type_t create_type, void *obj,
     const H5VL_loc_params_t *loc_params, hid_t lcpl_id, hid_t H5_ATTR_UNUSED lapl_id,
     hid_t H5_ATTR_UNUSED dxpl_id, void H5_ATTR_UNUSED **req, va_list arguments)
 {
-    H5P_genplist_t   *plist;                     /* Property list pointer */
     herr_t           ret_value = SUCCEED;        /* Return value */
 
     FUNC_ENTER_PACKAGE
 
-    /* Get the plist structure */
-    if(NULL == (plist = (H5P_genplist_t *)H5I_object(lcpl_id)))
-        HGOTO_ERROR(H5E_ATOM, H5E_BADATOM, FAIL, "can't find object for ID");
-
     switch(create_type) {
         case H5VL_LINK_CREATE_HARD:
             {