mirror of
https://github.com/HDFGroup/hdf5.git
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HDFFV-10143 add APIs to manipulate plugin path table
This commit is contained in:
Allen Byrne
parent
9b59aeadf0
commit
77e1f1e491
298
src/H5PL.c
298
src/H5PL.c
@ -389,6 +389,304 @@ done:
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} /* end H5PL_load() */
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/*-------------------------------------------------------------------------
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* Function: H5PLappend
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*
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* Purpose: Insert a plugin path at the end of the list.
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*
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* Return: Non-negative or success.
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*
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*-------------------------------------------------------------------------
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*/
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herr_t
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H5PLappend(char* plugin_path)
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{
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herr_t ret_value = SUCCEED; /* Return value */
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char *dl_path = NULL;
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FUNC_ENTER_API(FAIL)
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if(H5PL_num_paths_g == H5PL_MAX_PATH_NUM)
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HGOTO_ERROR(H5E_PLUGIN, H5E_NOSPACE, FAIL, "too many directories in path for table")
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if(NULL == plugin_path)
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HGOTO_ERROR(H5E_PLUGIN, H5E_CANTALLOC, FAIL, "no path provided")
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dl_path = H5MM_strdup(plugin_path);
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if(NULL == dl_path)
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HGOTO_ERROR(H5E_PLUGIN, H5E_CANTALLOC, FAIL, "can't allocate memory for path")
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#ifdef H5_HAVE_WIN32_API
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else { /* Expand windows env var*/
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long bufCharCount;
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char *tempbuf;
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if(NULL == (tempbuf = (char *)H5MM_malloc(H5PL_EXPAND_BUFFER_SIZE)))
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HGOTO_ERROR(H5E_PLUGIN, H5E_CANTALLOC, FAIL, "can't allocate memory for expanded path")
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if((bufCharCount = ExpandEnvironmentStrings(dl_path, tempbuf, H5PL_EXPAND_BUFFER_SIZE)) > H5PL_EXPAND_BUFFER_SIZE) {
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tempbuf = (char *)H5MM_xfree(tempbuf);
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HGOTO_ERROR(H5E_PLUGIN, H5E_NOSPACE, FAIL, "expanded path is too long")
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}
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if(bufCharCount == 0) {
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tempbuf = (char *)H5MM_xfree(tempbuf);
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HGOTO_ERROR(H5E_PLUGIN, H5E_CANTGET, FAIL, "failed to expand path")
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}
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dl_path = (char *)H5MM_xfree(dl_path);
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dl_path = H5MM_strdup(tempbuf);
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tempbuf = (char *)H5MM_xfree(tempbuf);
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}
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#endif /* H5_HAVE_WIN32_API */
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if(NULL == (H5PL_path_table_g[H5PL_num_paths_g] = H5MM_strdup(dl_path)))
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HGOTO_ERROR(H5E_PLUGIN, H5E_CANTALLOC, FAIL, "can't allocate memory for path")
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H5PL_num_paths_g++;
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done:
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if(dl_path)
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dl_path = (char *)H5MM_xfree(dl_path);
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FUNC_LEAVE_API(ret_value)
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} /* end H5PLappend() */
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/*-------------------------------------------------------------------------
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* Function: H5PLprepend
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*
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* Purpose: Insert a plugin path at the beginning of the list.
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*
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* Return: Non-negative or success.
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*
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*-------------------------------------------------------------------------
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*/
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herr_t
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H5PLprepend(char* plugin_path)
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{
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herr_t ret_value = SUCCEED; /* Return value */
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char *dl_path = NULL;
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unsigned int plindex;
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FUNC_ENTER_API(FAIL)
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if(H5PL_num_paths_g == H5PL_MAX_PATH_NUM)
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HGOTO_ERROR(H5E_PLUGIN, H5E_NOSPACE, FAIL, "too many directories in path for table")
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if(NULL == plugin_path)
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HGOTO_ERROR(H5E_PLUGIN, H5E_CANTALLOC, FAIL, "no path provided")
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dl_path = H5MM_strdup(plugin_path);
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if(NULL == dl_path)
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HGOTO_ERROR(H5E_PLUGIN, H5E_CANTALLOC, FAIL, "can't allocate memory for path")
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#ifdef H5_HAVE_WIN32_API
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else { /* Expand windows env var*/
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long bufCharCount;
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char *tempbuf;
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if (NULL == (tempbuf = (char *)H5MM_malloc(H5PL_EXPAND_BUFFER_SIZE)))
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HGOTO_ERROR(H5E_PLUGIN, H5E_CANTALLOC, FAIL, "can't allocate memory for expanded path")
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if ((bufCharCount = ExpandEnvironmentStrings(dl_path, tempbuf, H5PL_EXPAND_BUFFER_SIZE)) > H5PL_EXPAND_BUFFER_SIZE) {
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tempbuf = (char *)H5MM_xfree(tempbuf);
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HGOTO_ERROR(H5E_PLUGIN, H5E_NOSPACE, FAIL, "expanded path is too long")
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}
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if (bufCharCount == 0) {
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tempbuf = (char *)H5MM_xfree(tempbuf);
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HGOTO_ERROR(H5E_PLUGIN, H5E_CANTGET, FAIL, "failed to expand path")
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}
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dl_path = (char *)H5MM_xfree(dl_path);
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dl_path = H5MM_strdup(tempbuf);
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tempbuf = (char *)H5MM_xfree(tempbuf);
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}
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#endif /* H5_HAVE_WIN32_API */
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for (plindex = (unsigned int)H5PL_num_paths_g; plindex > 0; plindex--)
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H5PL_path_table_g[plindex] = H5PL_path_table_g[plindex - 1];
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if (NULL == (H5PL_path_table_g[0] = H5MM_strdup(dl_path)))
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HGOTO_ERROR(H5E_PLUGIN, H5E_CANTALLOC, FAIL, "can't allocate memory for path")
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H5PL_num_paths_g++;
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done:
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if (dl_path)
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dl_path = (char *)H5MM_xfree(dl_path);
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FUNC_LEAVE_API(ret_value)
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} /* end H5PLprepend() */
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/*-------------------------------------------------------------------------
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* Function: H5PLput
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*
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* Purpose: Replace the path at the specified index.
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*
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* Return: Non-negative or success.
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*
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*-------------------------------------------------------------------------
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*/
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herr_t
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H5PLput(char* plugin_path, unsigned int index)
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{
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herr_t ret_value = SUCCEED; /* Return value */
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char *dl_path = NULL;
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FUNC_ENTER_API(FAIL)
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if(NULL == plugin_path)
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HGOTO_ERROR(H5E_PLUGIN, H5E_CANTALLOC, FAIL, "no path provided")
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dl_path = H5MM_strdup(plugin_path);
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if(NULL == dl_path)
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HGOTO_ERROR(H5E_PLUGIN, H5E_CANTALLOC, FAIL, "can't allocate memory for path")
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#ifdef H5_HAVE_WIN32_API
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else { /* Expand windows env var*/
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long bufCharCount;
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char *tempbuf;
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if(NULL == (tempbuf = (char *)H5MM_malloc(H5PL_EXPAND_BUFFER_SIZE)))
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HGOTO_ERROR(H5E_PLUGIN, H5E_CANTALLOC, FAIL, "can't allocate memory for expanded path")
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if((bufCharCount = ExpandEnvironmentStrings(dl_path, tempbuf, H5PL_EXPAND_BUFFER_SIZE)) > H5PL_EXPAND_BUFFER_SIZE) {
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tempbuf = (char *)H5MM_xfree(tempbuf);
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HGOTO_ERROR(H5E_PLUGIN, H5E_NOSPACE, FAIL, "expanded path is too long")
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}
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if(bufCharCount == 0) {
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tempbuf = (char *)H5MM_xfree(tempbuf);
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HGOTO_ERROR(H5E_PLUGIN, H5E_CANTGET, FAIL, "failed to expand path")
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}
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dl_path = (char *)H5MM_xfree(dl_path);
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dl_path = H5MM_strdup(tempbuf);
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tempbuf = (char *)H5MM_xfree(tempbuf);
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}
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#endif /* H5_HAVE_WIN32_API */
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if(H5PL_path_table_g[index])
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H5PL_path_table_g[index] = (char *)H5MM_xfree(H5PL_path_table_g[index]);
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if(NULL == (H5PL_path_table_g[index] = H5MM_strdup(dl_path)))
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HGOTO_ERROR(H5E_PLUGIN, H5E_CANTALLOC, FAIL, "can't allocate memory for path")
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done:
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if(dl_path)
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dl_path = (char *)H5MM_xfree(dl_path);
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FUNC_LEAVE_API(ret_value)
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} /* end H5PLput() */
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/*-------------------------------------------------------------------------
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* Function: H5PLinsert
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*
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* Purpose: Insert a plugin path at the specified index, moving other paths after the index.
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*
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* Return: Non-negative or success.
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*
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*-------------------------------------------------------------------------
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*/
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herr_t
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H5PLinsert(char* plugin_path, unsigned int index)
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{
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herr_t ret_value = SUCCEED; /* Return value */
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char *dl_path = NULL;
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unsigned int plindex;
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FUNC_ENTER_API(FAIL)
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if(H5PL_num_paths_g == H5PL_MAX_PATH_NUM)
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HGOTO_ERROR(H5E_PLUGIN, H5E_NOSPACE, FAIL, "too many directories in path for table")
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if(NULL == plugin_path)
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HGOTO_ERROR(H5E_PLUGIN, H5E_CANTALLOC, FAIL, "no path provided")
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dl_path = H5MM_strdup(plugin_path);
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if(NULL == dl_path)
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HGOTO_ERROR(H5E_PLUGIN, H5E_CANTALLOC, FAIL, "can't allocate memory for path")
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#ifdef H5_HAVE_WIN32_API
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else { /* Expand windows env var*/
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long bufCharCount;
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char *tempbuf;
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if(NULL == (tempbuf = (char *)H5MM_malloc(H5PL_EXPAND_BUFFER_SIZE)))
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HGOTO_ERROR(H5E_PLUGIN, H5E_CANTALLOC, FAIL, "can't allocate memory for expanded path")
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if((bufCharCount = ExpandEnvironmentStrings(dl_path, tempbuf, H5PL_EXPAND_BUFFER_SIZE)) > H5PL_EXPAND_BUFFER_SIZE) {
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tempbuf = (char *)H5MM_xfree(tempbuf);
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HGOTO_ERROR(H5E_PLUGIN, H5E_NOSPACE, FAIL, "expanded path is too long")
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}
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if(bufCharCount == 0) {
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tempbuf = (char *)H5MM_xfree(tempbuf);
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HGOTO_ERROR(H5E_PLUGIN, H5E_CANTGET, FAIL, "failed to expand path")
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}
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dl_path = (char *)H5MM_xfree(dl_path);
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dl_path = H5MM_strdup(tempbuf);
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tempbuf = (char *)H5MM_xfree(tempbuf);
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}
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#endif /* H5_HAVE_WIN32_API */
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for(plindex = (unsigned int)H5PL_num_paths_g; plindex > index; plindex--)
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H5PL_path_table_g[plindex] = H5PL_path_table_g[plindex - 1];
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if(NULL == (H5PL_path_table_g[index] = H5MM_strdup(dl_path)))
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HGOTO_ERROR(H5E_PLUGIN, H5E_CANTALLOC, FAIL, "can't allocate memory for path")
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H5PL_num_paths_g++;
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done:
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if(dl_path)
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dl_path = (char *)H5MM_xfree(dl_path);
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FUNC_LEAVE_API(ret_value)
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} /* end H5PLinsert() */
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/*-------------------------------------------------------------------------
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* Function: H5PLremove
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*
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* Purpose: Remove the plugin path at the specifed index and compacting the list.
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*
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* Return: Non-negative or success.
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*
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*-------------------------------------------------------------------------
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*/
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herr_t
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H5PLremove(unsigned int index)
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{
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herr_t ret_value = SUCCEED; /* Return value */
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char *dl_path = NULL;
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unsigned int plindex;
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FUNC_ENTER_API(FAIL)
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if(H5PL_num_paths_g == 0)
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HGOTO_ERROR(H5E_PLUGIN, H5E_NOSPACE, FAIL, "no directories in table")
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if(NULL == (dl_path = H5PL_path_table_g[index]))
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HGOTO_ERROR(H5E_PLUGIN, H5E_CANTALLOC, FAIL, "no directory path at index")
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for(plindex = index; plindex < (unsigned int)H5PL_num_paths_g; plindex++)
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H5PL_path_table_g[plindex] = H5PL_path_table_g[plindex + 1];
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if(H5PL_path_table_g[plindex])
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dl_path = (char *)H5MM_xfree(dl_path);
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H5PL_num_paths_g--;
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H5PL_path_table_g[H5PL_num_paths_g] = NULL;
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done:
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if(dl_path)
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dl_path = (char *)H5MM_xfree(dl_path);
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FUNC_LEAVE_API(ret_value)
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} /* end H5PLremove() */
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/*-------------------------------------------------------------------------
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* Function: H5PLget
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*
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* Purpose: Query the plugin path at the specified index.
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*
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* Return: Non-NULL on success/NULL on failure
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*
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*-------------------------------------------------------------------------
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*/
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const char*
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H5PLget(unsigned int index)
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{
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char* ret_value = NULL; /* Return value */
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FUNC_ENTER_API(NULL)
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if(H5PL_num_paths_g == 0)
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HGOTO_ERROR(H5E_PLUGIN, H5E_NOSPACE, FAIL, "no directories in table")
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if(NULL == (ret_value = H5PL_path_table_g[index]))
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HGOTO_ERROR(H5E_PLUGIN, H5E_CANTALLOC, FAIL, "no directory path at index")
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done:
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FUNC_LEAVE_API(ret_value)
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} /* end H5PLget() */
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/*-------------------------------------------------------------------------
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* Function: H5PLsize
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*
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* Purpose: Query the size of the current list of plugin paths.
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*
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* Return: Non-negative or success.
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*
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*-------------------------------------------------------------------------
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*/
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unsigned int
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H5PLsize(void)
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{
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return (unsigned int)H5PL_num_paths_g;
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} /* end H5PLsize() */
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/*-------------------------------------------------------------------------
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* Function: H5PL__init_path_table
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*
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@ -44,6 +44,13 @@ extern "C" {
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/* plugin state */
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H5_DLL herr_t H5PLset_loading_state(unsigned int plugin_type);
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H5_DLL herr_t H5PLget_loading_state(unsigned int* plugin_type/*out*/);
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H5_DLL herr_t H5PLappend(char* plugin_path);
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H5_DLL herr_t H5PLprepend(char* plugin_path);
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H5_DLL herr_t H5PLput(char* plugin_path, unsigned int index);
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H5_DLL herr_t H5PLinsert(char* plugin_path, unsigned int index);
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H5_DLL herr_t H5PLremove(unsigned int index);
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H5_DLL const char* H5PLget(unsigned int index);
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H5_DLL unsigned int H5PLsize(void);
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#ifdef __cplusplus
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}
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622
test/plugin.c
622
test/plugin.c
File diff suppressed because it is too large
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