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HDFFV-9655 - Add functions for '@' - untested

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This commit is contained in:
Allen Byrne 2017-03-29 09:09:51 -05:00
parent 7fd79abc0c
commit 4e11e6dd37
1 changed files with 68 additions and 0 deletions
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68
src/H5PL.c
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@ -104,6 +104,13 @@ typedef const void *(*H5PL_get_plugin_info_t)(void);
/* Special symbol to indicate no plugin loading */
#define H5PL_NO_PLUGIN "::"
/* Special symbol to indicate relative path from environment */
#define H5PL_PLUGIN_ENV_SPECIALCHAR '@'
/* Maximum size for path to executable */
#ifndef MAX_EXEC_PATH
#define MAX_EXEC_PATH 2048
#endif
/******************/
/* Local Typedefs */
@ -154,6 +161,7 @@ static H5PL_table_t *H5PL_table_g = NULL;
static char *H5PL_path_table_g[H5PL_MAX_PATH_NUM];
static size_t H5PL_num_paths_g = 0;
static hbool_t H5PL_path_found_g = FALSE;
static char *H5PL_executable_path_g = NULL;
/* Enable all plugin libraries */
static unsigned int H5PL_plugin_g = H5PL_ALL_PLUGIN;
@ -175,6 +183,7 @@ herr_t
H5PL__init_package(void)
{
char *preload_path;
char *tempbuf;
FUNC_ENTER_PACKAGE_NOERR
@ -186,6 +195,36 @@ H5PL__init_package(void)
if(!HDstrcmp(preload_path, H5PL_NO_PLUGIN))
H5PL_plugin_g = 0;
/* Retrieve the executable path for use with H5PL_PLUGIN_ENV_SPECIALCHAR
* if the user uses it in a plugin path.
*/
if(NULL == (tempbuf = (char *)H5MM_malloc(MAX_EXEC_PATH)))
HGOTO_ERROR(H5E_PLUGIN, H5E_CANTALLOC, FAIL, "can't allocate memory for executable path")
#if defined(_WIN32) || defined(_WIN64) || defined(H5_HAVE_WIN32_API)
const char PathSep = '\\';
GetModuleFileName(NULL, tempbuf, MAX_EXEC_PATH);
#elif defined(__APPLE__)
const char PathSep = '/';
uint32_t size = sizeof(result);
_NSGetExecutablePath(tempbuf, &size);
#else
const char PathSep = '/';
{
ssize_t count = readlink("/proc/self/exe", tempbuf, MAX_EXEC_PATH);
tempbuf[count] = '\0';
}
#endif
{
char *bs = strrchr(tempbuf, PathSep);
size_t ncopy = MAX_EXEC_PATH;
if (bs)
ncopy = bs - tempbuf;
tempbuf[ncopy] = '\0';
}
H5PL_executable_path_g = H5MM_strdup(tempbuf);
if(tempbuf)
tempbuf = (char *)H5MM_xfree(tempbuf);
FUNC_LEAVE_NOAPI(SUCCEED)
} /* end H5PL__init_package() */
@ -239,6 +278,10 @@ H5PL_term_package(void)
n++;
} /* end if */
/* Free the executable path */
if(H5PL_executable_path_g)
H5PL_executable_path_g = (char *)H5MM_xfree(H5PL_executable_path_g);
/* Mark the interface as uninitialized */
if(0 == n)
H5_PKG_INIT_VAR = FALSE;
@ -247,6 +290,31 @@ H5PL_term_package(void)
FUNC_LEAVE_NOAPI(n)
} /* end H5PL_term_package() */
static char*
H5PL_env_strdup(const char *plpath)
{
char *dl_path = NULL;
if(NULL == plpath)
HGOTO_ERROR(H5E_PLUGIN, H5E_CANTALLOC, FAIL, "no path provided")
if (*plpath == H5PL_PLUGIN_ENV_SPECIALCHAR) {
char *tempbuf;
int ExecPathLength = strlen(H5PL_executable_path_g);
int PluginPathLength = strlen(plpath);
if(NULL == (tempbuf = (char *)H5MM_malloc(ExecPathLength + PluginPathLength)))
HGOTO_ERROR(H5E_PLUGIN, H5E_CANTALLOC, FAIL, "can't allocate memory for plugin path")
HDstrncpy(tempbuf, H5PL_executable_path_g, ExecPathLength);
HDstrncpy(tempbuf+ExecPathLength, s+1, PluginPathLength-1);
tempbuf[ExecPathLength + PluginPathLength] = '\0';
dl_path = H5MM_strdup(tempbuf);
tempbuf = (char *)H5MM_xfree(tempbuf);
}
else
dl_path = H5MM_strdup(plpath);
return dl_path;
} /* end H5PL_env_strdup() */
/*-------------------------------------------------------------------------
* Function: H5PLset_loading_state