/*
Bacula® - The Network Backup Solution
- Copyright (C) 2007-2008 Free Software Foundation Europe e.V.
+ Copyright (C) 2007-2009 Free Software Foundation Europe e.V.
The main author of Bacula is Kern Sibbald, with contributions from
many others, a complete list can be found in the file AUTHORS.
This program is Free Software; you can redistribute it and/or
- modify it under the terms of version two of the GNU General Public
+ modify it under the terms of version three of the GNU Affero General Public
License as published by the Free Software Foundation, which is
listed in the file LICENSE.
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
- You should have received a copy of the GNU General Public License
+ You should have received a copy of the GNU Affero General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301, USA.
- Bacula® is a registered trademark of John Walker.
+ Bacula® is a registered trademark of Kern Sibbald.
The licensor of Bacula is the Free Software Foundation Europe
(FSFE), Fiduciary Program, Sumatrastrasse 25, 8006 Zürich,
Switzerland, email:ftf@fsfeurope.org.
*
* Kern Sibbald, October 2007
*/
+
#include "bacula.h"
+#include <dlfcn.h>
+#ifdef HAVE_DIRENT_H
+#include <dirent.h>
+#define NAMELEN(dirent) (strlen((dirent)->d_name))
+#endif
+#ifndef HAVE_READDIR_R
+int readdir_r(DIR *dirp, struct dirent *entry, struct dirent **result);
+#endif
+
+#ifndef RTLD_NOW
+#define RTLD_NOW 2
+#endif
+
#include "plugins.h"
+static const int dbglvl = 50;
+
/* All loaded plugins */
-alist *plugin_list;
+alist *plugin_list = NULL;
/*
* Create a new plugin "class" entry and enter it in the
plugin = (Plugin *)malloc(sizeof(Plugin));
memset(plugin, 0, sizeof(Plugin));
- plugin_list->append(plugin);
return plugin;
}
+static void close_plugin(Plugin *plugin)
+{
+ if (plugin->file) {
+ Dmsg1(50, "Got plugin=%s but not accepted.\n", plugin->file);
+ }
+ if (plugin->unloadPlugin) {
+ plugin->unloadPlugin();
+ }
+ if (plugin->pHandle) {
+ dlclose(plugin->pHandle);
+ }
+ if (plugin->file) {
+ free(plugin->file);
+ }
+ free(plugin);
+}
/*
* Load all the plugins in the specified directory.
*/
-bool load_plugins(void *binfo, void *bfuncs, const char *plugin_dir, const char *type)
+bool load_plugins(void *binfo, void *bfuncs, const char *plugin_dir,
+ const char *type, bool is_plugin_compatible(Plugin *plugin))
{
bool found = false;
-#ifndef HAVE_WIN32
t_loadPlugin loadPlugin;
- Plugin *plugin;
+ Plugin *plugin = NULL;
DIR* dp = NULL;
struct dirent *entry = NULL, *result;
int name_max;
if (!(dp = opendir(plugin_dir))) {
berrno be;
- Jmsg(NULL, M_ERROR, 0, _("Failed to open Plugin directory %s: ERR=%s\n"),
+ Jmsg(NULL, M_ERROR_TERM, 0, _("Failed to open Plugin directory %s: ERR=%s\n"),
+ plugin_dir, be.bstrerror());
+ Dmsg2(dbglvl, "Failed to open Plugin directory %s: ERR=%s\n",
plugin_dir, be.bstrerror());
goto get_out;
}
}
entry = (struct dirent *)malloc(sizeof(struct dirent) + name_max + 1000);
for ( ;; ) {
+ plugin = NULL; /* Start from a fresh plugin */
+
if ((readdir_r(dp, entry, &result) != 0) || (result == NULL)) {
if (!found) {
- Jmsg(NULL, M_INFO, 0, _("Failed to find suitable plugin in %s\n"),
+ Jmsg(NULL, M_WARNING, 0, _("Failed to find any plugins in %s\n"),
plugin_dir);
+ Dmsg1(dbglvl, "Failed to find any plugins in %s\n", plugin_dir);
}
break;
}
len = strlen(result->d_name);
type_len = strlen(type);
if (len < type_len+1 || strcmp(&result->d_name[len-type_len], type) != 0) {
+ Dmsg3(dbglvl, "Rejected plugin: want=%s name=%s len=%d\n", type, result->d_name, len);
continue;
}
- Dmsg2(000, "Loaded plugin: name=%s len=%d\n", result->d_name, len);
+ Dmsg2(dbglvl, "Loaded plugin: name=%s len=%d\n", result->d_name, len);
pm_strcpy(fname, plugin_dir);
if (need_slash) {
plugin = new_plugin();
plugin->file = bstrdup(result->d_name);
+ plugin->file_len = strstr(plugin->file, type) - plugin->file;
plugin->pHandle = dlopen(fname.c_str(), RTLD_NOW);
if (!plugin->pHandle) {
Jmsg(NULL, M_ERROR, 0, _("Plugin load %s failed: ERR=%s\n"),
fname.c_str(), NPRT(dlerror()));
- goto get_out;
+ Dmsg2(dbglvl, "Plugin load %s failed: ERR=%s\n", fname.c_str(),
+ NPRT(dlerror()));
+ close_plugin(plugin);
+ continue;
}
/* Get two global entry points */
if (!loadPlugin) {
Jmsg(NULL, M_ERROR, 0, _("Lookup of loadPlugin in plugin %s failed: ERR=%s\n"),
fname.c_str(), NPRT(dlerror()));
- goto get_out;
+ Dmsg2(dbglvl, "Lookup of loadPlugin in plugin %s failed: ERR=%s\n",
+ fname.c_str(), NPRT(dlerror()));
+ close_plugin(plugin);
+ continue;
}
plugin->unloadPlugin = (t_unloadPlugin)dlsym(plugin->pHandle, "unloadPlugin");
if (!plugin->unloadPlugin) {
Jmsg(NULL, M_ERROR, 0, _("Lookup of unloadPlugin in plugin %s failed: ERR=%s\n"),
fname.c_str(), NPRT(dlerror()));
- goto get_out;
+ Dmsg2(dbglvl, "Lookup of unloadPlugin in plugin %s failed: ERR=%s\n",
+ fname.c_str(), NPRT(dlerror()));
+ close_plugin(plugin);
+ continue;
}
/* Initialize the plugin */
- loadPlugin(binfo, bfuncs, &plugin->pinfo, &plugin->pfuncs);
+ if (loadPlugin(binfo, bfuncs, &plugin->pinfo, &plugin->pfuncs) != bRC_OK) {
+ close_plugin(plugin);
+ continue;
+ }
+ if (!is_plugin_compatible) {
+ Dmsg0(50, "Plugin compatibility pointer not set.\n");
+ } else if (!is_plugin_compatible(plugin)) {
+ close_plugin(plugin);
+ continue;
+ }
found = true; /* found a plugin */
+ plugin_list->append(plugin);
}
get_out:
+ if (!found && plugin) {
+ close_plugin(plugin);
+ }
if (entry) {
free(entry);
}
if (dp) {
closedir(dp);
}
-#endif
return found;
}
*/
void unload_plugins()
{
-#ifndef HAVE_WIN32
Plugin *plugin;
+ if (!plugin_list) {
+ return;
+ }
foreach_alist(plugin, plugin_list) {
/* Shut it down and unload it */
plugin->unloadPlugin();
}
delete plugin_list;
plugin_list = NULL;
-#endif
+}
+
+/*
+ * Dump plugin information
+ * Each daemon can register a hook that will be called
+ * after a fatal signal.
+ */
+#define DBG_MAX_HOOK 10
+static dbg_plugin_hook_t *dbg_plugin_hooks[DBG_MAX_HOOK];
+static int dbg_plugin_hook_count=0;
+
+void dbg_plugin_add_hook(dbg_plugin_hook_t *fct)
+{
+ ASSERT(dbg_plugin_hook_count < DBG_MAX_HOOK);
+ dbg_plugin_hooks[dbg_plugin_hook_count++] = fct;
+}
+
+void dbg_print_plugin(FILE *fp)
+{
+ Plugin *plugin;
+ fprintf(fp, "Attempt to dump plugins. Hook count=%d\n", dbg_plugin_hook_count);
+
+ if (!plugin_list) {
+ return;
+ }
+ foreach_alist(plugin, plugin_list) {
+ for(int i=0; i < dbg_plugin_hook_count; i++) {
+// dbg_plugin_hook_t *fct = dbg_plugin_hooks[i];
+ fprintf(fp, "Plugin %p name=\"%s\" disabled=%d\n",
+ plugin, plugin->file, plugin->disabled);
+// fct(plugin, fp);
+ }
+ }
}
projects / bacula / bacula / blobdiff