XRootD
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XrdOucPreload.cc
Go to the documentation of this file.
1/******************************************************************************/
2/* */
3/* X r d O u c P r e l o a d . c c */
4/* */
5/* (c) 2014 by the Board of Trustees of the Leland Stanford, Jr., University */
6/* Produced by Andrew Hanushevsky for Stanford University under contract */
7/* DE-AC02-76-SFO0515 with the Department of Energy */
8/* */
9/* This file is part of the XRootD software suite. */
10/* */
11/* XRootD is free software: you can redistribute it and/or modify it under */
12/* the terms of the GNU Lesser General Public License as published by the */
13/* Free Software Foundation, either version 3 of the License, or (at your */
14/* option) any later version. */
15/* */
16/* XRootD is distributed in the hope that it will be useful, but WITHOUT */
17/* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or */
18/* FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public */
19/* License for more details. */
20/* */
21/* You should have received a copy of the GNU Lesser General Public License */
22/* along with XRootD in a file called COPYING.LESSER (LGPL license) and file */
23/* COPYING (GPL license). If not, see <http://www.gnu.org/licenses/>. */
24/* */
25/* The copyright holder's institutional names and contributor's names may not */
26/* be used to endorse or promote products derived from this software without */
27/* specific prior written permission of the institution or contributor. */
28/******************************************************************************/
29
30#include <cstdio>
31
32#include "XrdVersion.hh"
33
37
38/******************************************************************************/
39/* X r d O u c P r e l o a d */
40/******************************************************************************/
41
42bool XrdOucPreload(const char *plib, char *eBuff, int eBlen, bool retry)
43{
44 char theLib[2048];
45 bool dummy;
46
47// Perform versioning
48//
49 if (!XrdOucVerName::Version(XRDPLUGIN_SOVERSION, plib, dummy,
50 theLib, sizeof(theLib)))
51 {snprintf(eBuff, eBlen,
52 "Unable to preload plugin via %s; path too long.", plib);
53 return false;
54 }
55
56// Preload the library. If we failed, we will try to fallback to the
57// unversioned name is we are allowed to do so.
58//
59 *eBuff = 0;
60 if (XrdSysPlugin::Preload(theLib, eBuff, eBlen)
61 || (retry && XrdSysPlugin::Preload(plib, eBuff, eBlen))) return true;
62 return false;
63}
bool XrdOucPreload(const char *plib, char *eBuff, int eBlen, bool retry)
This include file define a utility function that pre-loads a plugin.
static int Version(const char *piVers, const char *piPath, bool &noFBK, char *buff, int blen)
static bool Preload(const char *path, char *ebuff=0, int eblen=0)