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-rw-r--r--src/H5PL.c282
1 files changed, 260 insertions, 22 deletions
diff --git a/src/H5PL.c b/src/H5PL.c
index 1f7bb2a..bfa3ace 100644
--- a/src/H5PL.c
+++ b/src/H5PL.c
@@ -25,15 +25,33 @@
#include "H5private.h" /* Generic Functions */
#include "H5Eprivate.h" /* Error handling */
#include "H5MMprivate.h" /* Memory management */
-#include "H5PLprivate.h" /* Plugin */
+#include "H5PLpkg.h" /* Plugin */
#include "H5Zprivate.h" /* Filter pipeline */
/****************/
/* Local Macros */
/****************/
-
-#define H5PL_MAX_PATH_NUM 16
+#ifdef H5_HAVE_WIN32_API
+#define H5PL_EXPAND_ENV_VAR { \
+ long bufCharCount; \
+ char *tempbuf; \
+ if(NULL == (tempbuf = (char *)H5MM_malloc(H5PL_EXPAND_BUFFER_SIZE))) \
+ HGOTO_ERROR(H5E_PLUGIN, H5E_CANTALLOC, FAIL, "can't allocate memory for expanded path") \
+ if((bufCharCount = ExpandEnvironmentStringsA(dl_path, tempbuf, H5PL_EXPAND_BUFFER_SIZE)) > H5PL_EXPAND_BUFFER_SIZE) { \
+ tempbuf = (char *)H5MM_xfree(tempbuf); \
+ HGOTO_ERROR(H5E_PLUGIN, H5E_NOSPACE, FAIL, "expanded path is too long") \
+ } \
+ if(bufCharCount == 0) { \
+ tempbuf = (char *)H5MM_xfree(tempbuf); \
+ HGOTO_ERROR(H5E_PLUGIN, H5E_CANTGET, FAIL, "failed to expand path") \
+ } \
+ dl_path = (char *)H5MM_xfree(dl_path); \
+ dl_path = tempbuf; \
+ }
+#else
+#define H5PL_EXPAND_ENV_VAR
+#endif /* H5_HAVE_WIN32_API */
/****************************/
/* Macros for supporting
@@ -390,6 +408,244 @@ done:
/*-------------------------------------------------------------------------
+ * Function: H5PLappend
+ *
+ * Purpose: Insert a plugin path at the end of the list.
+ *
+ * Return: Non-negative or success.
+ *
+ *-------------------------------------------------------------------------
+ */
+herr_t
+H5PLappend(const char* plugin_path)
+{
+ herr_t ret_value = SUCCEED; /* Return value */
+ char *dl_path = NULL;
+
+ FUNC_ENTER_API(FAIL)
+ if(H5PL_num_paths_g == H5PL_MAX_PATH_NUM)
+ HGOTO_ERROR(H5E_PLUGIN, H5E_NOSPACE, FAIL, "too many directories in path for table")
+ if(NULL == plugin_path)
+ HGOTO_ERROR(H5E_PLUGIN, H5E_CANTALLOC, FAIL, "no path provided")
+ if(NULL == (dl_path = H5MM_strdup(plugin_path)))
+ HGOTO_ERROR(H5E_PLUGIN, H5E_CANTALLOC, FAIL, "can't allocate memory for path")
+
+ H5PL_EXPAND_ENV_VAR
+
+ H5PL_path_table_g[H5PL_num_paths_g] = dl_path;
+ H5PL_num_paths_g++;
+
+done:
+ FUNC_LEAVE_API(ret_value)
+} /* end H5PLappend() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5PLprepend
+ *
+ * Purpose: Insert a plugin path at the beginning of the list.
+ *
+ * Return: Non-negative or success.
+ *
+ *-------------------------------------------------------------------------
+ */
+herr_t
+H5PLprepend(const char* plugin_path)
+{
+ herr_t ret_value = SUCCEED; /* Return value */
+ char *dl_path = NULL;
+ unsigned int plindex;
+
+ FUNC_ENTER_API(FAIL)
+ if(H5PL_num_paths_g == H5PL_MAX_PATH_NUM)
+ HGOTO_ERROR(H5E_PLUGIN, H5E_NOSPACE, FAIL, "too many directories in path for table")
+ if(NULL == plugin_path)
+ HGOTO_ERROR(H5E_PLUGIN, H5E_CANTALLOC, FAIL, "no path provided")
+ if(NULL == (dl_path = H5MM_strdup(plugin_path)))
+ HGOTO_ERROR(H5E_PLUGIN, H5E_CANTALLOC, FAIL, "can't allocate memory for path")
+
+ H5PL_EXPAND_ENV_VAR
+
+ for (plindex = (unsigned int)H5PL_num_paths_g; plindex > 0; plindex--)
+ H5PL_path_table_g[plindex] = H5PL_path_table_g[plindex - 1];
+ H5PL_path_table_g[0] = dl_path;
+ H5PL_num_paths_g++;
+
+done:
+ FUNC_LEAVE_API(ret_value)
+} /* end H5PLprepend() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5PLreplace
+ *
+ * Purpose: Replace the path at the specified index.
+ *
+ * Return: Non-negative or success.
+ *
+ *-------------------------------------------------------------------------
+ */
+herr_t
+H5PLreplace(const char* plugin_path, unsigned int index)
+{
+ herr_t ret_value = SUCCEED; /* Return value */
+ char *dl_path = NULL;
+
+ FUNC_ENTER_API(FAIL)
+ if(NULL == plugin_path)
+ HGOTO_ERROR(H5E_PLUGIN, H5E_CANTALLOC, FAIL, "no path provided")
+ if(index >= H5PL_MAX_PATH_NUM)
+ HGOTO_ERROR(H5E_PLUGIN, H5E_NOSPACE, FAIL, "index path out of bounds for table")
+ if(NULL == (dl_path = H5MM_strdup(plugin_path)))
+ HGOTO_ERROR(H5E_PLUGIN, H5E_CANTALLOC, FAIL, "can't allocate memory for path")
+
+ H5PL_EXPAND_ENV_VAR
+
+ if(H5PL_path_table_g[index])
+ H5PL_path_table_g[index] = (char *)H5MM_xfree(H5PL_path_table_g[index]);
+ H5PL_path_table_g[index] = dl_path;
+
+done:
+ FUNC_LEAVE_API(ret_value)
+} /* end H5PLreplace() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5PLinsert
+ *
+ * Purpose: Insert a plugin path at the specified index, moving other paths after the index.
+ *
+ * Return: Non-negative or success.
+ *
+ *-------------------------------------------------------------------------
+ */
+herr_t
+H5PLinsert(const char* plugin_path, unsigned int index)
+{
+ herr_t ret_value = SUCCEED; /* Return value */
+ char *dl_path = NULL;
+ unsigned int plindex;
+
+ FUNC_ENTER_API(FAIL)
+ if(H5PL_num_paths_g == H5PL_MAX_PATH_NUM)
+ HGOTO_ERROR(H5E_PLUGIN, H5E_NOSPACE, FAIL, "too many directories in path for table")
+ if(NULL == plugin_path)
+ HGOTO_ERROR(H5E_PLUGIN, H5E_CANTALLOC, FAIL, "no path provided")
+ if(index >= H5PL_MAX_PATH_NUM)
+ HGOTO_ERROR(H5E_PLUGIN, H5E_NOSPACE, FAIL, "index path out of bounds for table")
+ if(NULL == (dl_path = H5MM_strdup(plugin_path)))
+ HGOTO_ERROR(H5E_PLUGIN, H5E_CANTALLOC, FAIL, "can't allocate memory for path")
+
+ H5PL_EXPAND_ENV_VAR
+
+ for(plindex = (unsigned int)H5PL_num_paths_g; plindex > index; plindex--)
+ H5PL_path_table_g[plindex] = H5PL_path_table_g[plindex - 1];
+ H5PL_path_table_g[index] = dl_path;
+ H5PL_num_paths_g++;
+
+done:
+ FUNC_LEAVE_API(ret_value)
+} /* end H5PLinsert() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5PLremove
+ *
+ * Purpose: Remove the plugin path at the specifed index and compacting the list.
+ *
+ * Return: Non-negative or success.
+ *
+ *-------------------------------------------------------------------------
+ */
+herr_t
+H5PLremove(unsigned int index)
+{
+ herr_t ret_value = SUCCEED; /* Return value */
+ unsigned int plindex;
+
+ FUNC_ENTER_API(FAIL)
+ if(H5PL_num_paths_g == 0)
+ HGOTO_ERROR(H5E_PLUGIN, H5E_NOSPACE, FAIL, "no directories in table")
+ if(index >= H5PL_MAX_PATH_NUM)
+ HGOTO_ERROR(H5E_PLUGIN, H5E_NOSPACE, FAIL, "index path out of bounds for table")
+ if(NULL == H5PL_path_table_g[index])
+ HGOTO_ERROR(H5E_PLUGIN, H5E_CANTALLOC, FAIL, "no directory path at index")
+ H5PL_path_table_g[index] = (char *)H5MM_xfree(H5PL_path_table_g[index]);
+
+ H5PL_num_paths_g--;
+ for(plindex = index; plindex < (unsigned int)H5PL_num_paths_g; plindex++)
+ H5PL_path_table_g[plindex] = H5PL_path_table_g[plindex + 1];
+ H5PL_path_table_g[H5PL_num_paths_g] = NULL;
+
+done:
+ FUNC_LEAVE_API(ret_value)
+} /* end H5PLremove() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5PLget
+ *
+ * Purpose: Query the plugin path at the specified index.
+ *
+ * Return: Success: The length of path.
+ *
+ * If `pathname' is non-NULL then write up to `size' bytes into that
+ * buffer and always return the length of the pathname.
+ * Otherwise `size' is ignored and the function does not store the pathname,
+ * just returning the number of characters required to store the pathname.
+ * If an error occurs then the buffer pointed to by `pathname' (NULL or non-NULL)
+ * is unchanged and the function returns a negative value.
+ * If a zero is returned for the name's length, then there is no pathname
+ * associated with the index.
+ *
+ *-------------------------------------------------------------------------
+ */
+ssize_t
+H5PLget(unsigned int index, char *pathname/*out*/, size_t size)
+{
+ ssize_t ret_value = 0; /* Return value */
+ ssize_t len = 0; /* Length of pathname */
+ char *dl_path = NULL;
+
+ FUNC_ENTER_API(FAIL)
+ if(H5PL_num_paths_g == 0)
+ HGOTO_ERROR(H5E_PLUGIN, H5E_NOSPACE, FAIL, "no directories in table")
+ if(index >= H5PL_MAX_PATH_NUM)
+ HGOTO_ERROR(H5E_PLUGIN, H5E_NOSPACE, FAIL, "index path out of bounds for table")
+ if(NULL == (dl_path = H5PL_path_table_g[index]))
+ HGOTO_ERROR(H5E_PLUGIN, H5E_CANTALLOC, FAIL, "no directory path at index")
+ len = HDstrlen(dl_path);
+ if(pathname) {
+ HDstrncpy(pathname, dl_path, MIN((size_t)(len + 1), size));
+ if((size_t)len >= size)
+ pathname[size - 1] = '\0';
+ } /* end if */
+
+ /* Set return value */
+ ret_value = len;
+
+done:
+ FUNC_LEAVE_API(ret_value)
+} /* end H5PLget() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5PLsize
+ *
+ * Purpose: Query the size of the current list of plugin paths.
+ *
+ * Return: Non-negative or success.
+ *
+ *-------------------------------------------------------------------------
+ */
+unsigned int
+H5PLsize(void)
+{
+ return (unsigned int)H5PL_num_paths_g;
+} /* end H5PLsize() */
+
+
+/*-------------------------------------------------------------------------
* Function: H5PL__init_path_table
*
* Purpose: Initialize the path table.
@@ -422,25 +678,7 @@ H5PL__init_path_table(void)
if(NULL == dl_path)
HGOTO_ERROR(H5E_PLUGIN, H5E_CANTALLOC, FAIL, "can't allocate memory for path")
-#ifdef H5_HAVE_WIN32_API
- else { /* Expand windows env var*/
- long bufCharCount;
- char *tempbuf;
- if(NULL == (tempbuf = (char *)H5MM_malloc(H5PL_EXPAND_BUFFER_SIZE)))
- HGOTO_ERROR(H5E_PLUGIN, H5E_CANTALLOC, FAIL, "can't allocate memory for expanded path")
- if((bufCharCount = ExpandEnvironmentStrings(dl_path, tempbuf, H5PL_EXPAND_BUFFER_SIZE)) > H5PL_EXPAND_BUFFER_SIZE) {
- tempbuf = (char *)H5MM_xfree(tempbuf);
- HGOTO_ERROR(H5E_PLUGIN, H5E_NOSPACE, FAIL, "expanded path is too long")
- }
- if(bufCharCount == 0) {
- tempbuf = (char *)H5MM_xfree(tempbuf);
- HGOTO_ERROR(H5E_PLUGIN, H5E_CANTGET, FAIL, "failed to expand path")
- }
- dl_path = (char *)H5MM_xfree(dl_path);
- dl_path = H5MM_strdup(tempbuf);
- tempbuf = (char *)H5MM_xfree(tempbuf);
- }
-#endif /* H5_HAVE_WIN32_API */
+ H5PL_EXPAND_ENV_VAR
/* Put paths in the path table. They are separated by ":" */
dir = HDstrtok(dl_path, H5PL_PATH_SEPARATOR);