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-rw-r--r--source/lib/module.c244
1 files changed, 52 insertions, 192 deletions
diff --git a/source/lib/module.c b/source/lib/module.c
index 2abe918ef44..15f92db59e0 100644
--- a/source/lib/module.c
+++ b/source/lib/module.c
@@ -3,7 +3,6 @@
module loading system
Copyright (C) Jelmer Vernooij 2002-2003
- Copyright (C) Stefan (metze) Metzmacher 2003
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
@@ -24,15 +23,31 @@
#ifdef HAVE_DLOPEN
-/* Load a dynamic module. Only log a level 0 error if we are not checking
- for the existence of a module (probling). */
-
-static NTSTATUS do_smb_load_module(const char *module_name, BOOL is_probe)
+/* Load module (or directory with modules) recursively.
+ * Includes running the init_module() function */
+NTSTATUS smb_load_module(const char *module_name)
{
void *handle;
- init_module_function *init;
+ init_module_function init;
NTSTATUS status;
const char *error;
+ struct stat st;
+ DIR *dir;
+ struct dirent *dirent;
+
+ stat(module_name, &st);
+
+ /* If the argument is a directory, recursively load all files /
+ * directories in it */
+
+ /* How about symlinks pointing to themselves - wouldn't we rather
+ * want to use wildcards here? */
+ if(S_ISDIR(st.st_mode)) {
+ dir = opendir(module_name);
+ while ((dirent = readdir(dir))) {
+ smb_load_module(dirent->d_name);
+ }
+ }
/* Always try to use LAZY symbol resolving; if the plugin has
* backwards compatibility, there might be symbols in the
@@ -41,20 +56,17 @@ static NTSTATUS do_smb_load_module(const char *module_name, BOOL is_probe)
handle = sys_dlopen(module_name, RTLD_LAZY);
if(!handle) {
- int level = is_probe ? 3 : 0;
- error = sys_dlerror();
- DEBUG(level, ("Error loading module '%s': %s\n", module_name, error ? error : ""));
+ DEBUG(0, ("Error loading module '%s': %s\n", module_name, sys_dlerror()));
return NT_STATUS_UNSUCCESSFUL;
}
- init = (init_module_function *)sys_dlsym(handle, "init_module");
+ init = (init_module_function)sys_dlsym(handle, "init_module");
/* we must check sys_dlerror() to determine if it worked, because
sys_dlsym() can validly return NULL */
error = sys_dlerror();
if (error) {
- DEBUG(0, ("Error trying to resolve symbol 'init_module' in %s: %s\n",
- module_name, error));
+ DEBUG(0, ("Error trying to resolve symbol 'init_module' in %s: %s\n", module_name, error));
return NT_STATUS_UNSUCCESSFUL;
}
@@ -65,11 +77,6 @@ static NTSTATUS do_smb_load_module(const char *module_name, BOOL is_probe)
return status;
}
-NTSTATUS smb_load_module(const char *module_name)
-{
- return do_smb_load_module(module_name, False);
-}
-
/* Load all modules in list and return number of
* modules that has been successfully loaded */
int smb_load_modules(const char **modules)
@@ -88,32 +95,6 @@ int smb_load_modules(const char **modules)
return success;
}
-NTSTATUS smb_probe_module(const char *subsystem, const char *module)
-{
- pstring full_path;
-
- /* Check for absolute path */
-
- /* if we make any 'samba multibyte string'
- calls here, we break
- for loading string modules */
-
- DEBUG(5, ("Probing module '%s'\n", module));
-
- if (module[0] == '/')
- return do_smb_load_module(module, True);
-
- pstrcpy(full_path, lib_path(subsystem));
- pstrcat(full_path, "/");
- pstrcat(full_path, module);
- pstrcat(full_path, ".");
- pstrcat(full_path, shlib_ext());
-
- DEBUG(5, ("Probing module '%s': Trying to load from %s\n", module, full_path));
-
- return do_smb_load_module(full_path, True);
-}
-
#else /* HAVE_DLOPEN */
NTSTATUS smb_load_module(const char *module_name)
@@ -128,177 +109,56 @@ int smb_load_modules(const char **modules)
return -1;
}
-NTSTATUS smb_probe_module(const char *subsystem, const char *module)
-{
- DEBUG(0,("This samba executable has not been built with plugin support, not probing\n"));
- return NT_STATUS_NOT_SUPPORTED;
-}
-
#endif /* HAVE_DLOPEN */
void init_modules(void)
{
- /* FIXME: This can cause undefined symbol errors :
- * smb_register_vfs() isn't available in nmbd, for example */
if(lp_preload_modules())
smb_load_modules(lp_preload_modules());
}
-
-/***************************************************************************
- * This Function registers a idle event
- *
- * the registered funtions are run periodically
- * and maybe shutdown idle connections (e.g. to an LDAP server)
- ***************************************************************************/
-static smb_event_id_t smb_idle_event_id = 1;
-
-struct smb_idle_list_ent {
- struct smb_idle_list_ent *prev,*next;
- smb_event_id_t id;
- smb_idle_event_fn *fn;
- void *data;
- time_t interval;
- time_t lastrun;
+struct subsystem {
+ char *name;
+ register_backend_function callback;
+ struct subsystem *prev, *next;
};
-static struct smb_idle_list_ent *smb_idle_event_list = NULL;
-
-smb_event_id_t smb_register_idle_event(smb_idle_event_fn *fn, void *data, time_t interval)
-{
- struct smb_idle_list_ent *event;
-
- if (!fn) {
- return SMB_EVENT_ID_INVALID;
- }
-
- event = (struct smb_idle_list_ent *)malloc(sizeof(struct smb_idle_list_ent));
- if (!event) {
- DEBUG(0,("malloc() failed!\n"));
- return SMB_EVENT_ID_INVALID;
- }
- event->fn = fn;
- event->data = data;
- event->interval = interval;
- event->lastrun = 0;
- event->id = smb_idle_event_id++;
-
- DLIST_ADD(smb_idle_event_list,event);
-
- return event->id;
-}
-
-BOOL smb_unregister_idle_event(smb_event_id_t id)
-{
- struct smb_idle_list_ent *event = smb_idle_event_list;
-
- while(event) {
- if (event->id == id) {
- DLIST_REMOVE(smb_idle_event_list,event);
- SAFE_FREE(event);
- return True;
- }
- event = event->next;
- }
-
- return False;
-}
+static struct subsystem *subsystems = NULL;
-void smb_run_idle_events(time_t now)
+NTSTATUS register_subsystem(const char *name, register_backend_function callback)
{
- struct smb_idle_list_ent *event = smb_idle_event_list;
-
- while (event) {
- struct smb_idle_list_ent *next = event->next;
- time_t interval;
-
- if (event->interval <= 0) {
- interval = SMB_IDLE_EVENT_DEFAULT_INTERVAL;
- } else if (event->interval >= SMB_IDLE_EVENT_MIN_INTERVAL) {
- interval = event->interval;
- } else {
- interval = SMB_IDLE_EVENT_MIN_INTERVAL;
+ struct subsystem *s;
+ struct subsystem *t = subsystems;
+
+ while(t) {
+ if(!strcmp(name, t->name)) {
+ /* its already registered! */
+ DEBUG(0,("SUBSYSTEM '%s' for type already registered\n", name));
+ return NT_STATUS_OBJECT_NAME_COLLISION;
}
- if (now >(event->lastrun+interval)) {
- event->lastrun = now;
- event->fn(&event->data,&event->interval,now);
- }
- event = next;
+ t = t->next;
}
- return;
-}
-
-/***************************************************************************
- * This Function registers a exit event
- *
- * the registered functions are run on exit()
- * and maybe shutdown idle connections (e.g. to an LDAP server)
- ***************************************************************************/
-
-struct smb_exit_list_ent {
- struct smb_exit_list_ent *prev,*next;
- smb_event_id_t id;
- smb_exit_event_fn *fn;
- void *data;
-};
-
-static struct smb_exit_list_ent *smb_exit_event_list = NULL;
-
-smb_event_id_t smb_register_exit_event(smb_exit_event_fn *fn, void *data)
-{
- struct smb_exit_list_ent *event;
- static smb_event_id_t smb_exit_event_id = 1;
-
- if (!fn) {
- return SMB_EVENT_ID_INVALID;
- }
+ s = smb_xmalloc(sizeof(struct subsystem));
- event = (struct smb_exit_list_ent *)malloc(sizeof(struct smb_exit_list_ent));
- if (!event) {
- DEBUG(0,("malloc() failed!\n"));
- return SMB_EVENT_ID_INVALID;
- }
- event->fn = fn;
- event->data = data;
- event->id = smb_exit_event_id++;
+ s->name = smb_xstrdup(name);
+ s->callback = callback;
+ s->prev = s->next = NULL;
- DLIST_ADD(smb_exit_event_list,event);
+ DLIST_ADD(subsystems, s);
- return event->id;
+ return NT_STATUS_OK;
}
-BOOL smb_unregister_exit_event(smb_event_id_t id)
+NTSTATUS register_backend(const char *subsystem, void *args)
{
- struct smb_exit_list_ent *event = smb_exit_event_list;
-
- while(event) {
- if (event->id == id) {
- DLIST_REMOVE(smb_exit_event_list,event);
- SAFE_FREE(event);
- return True;
- }
- event = event->next;
- }
-
- return False;
-}
+ /* Find the specified subsystem */
+ struct subsystem *s = subsystems;
-void smb_run_exit_events(void)
-{
- struct smb_exit_list_ent *event = smb_exit_event_list;
- struct smb_exit_list_ent *tmp = NULL;
-
- while (event) {
- event->fn(&event->data);
- tmp = event;
- event = event->next;
- /* exit event should only run one time :-)*/
- SAFE_FREE(tmp);
+ while(s) {
+ if(!strcmp(subsystem, s->name)) return s->callback(args);
+ s = s->next;
}
- /* the list is empty now...*/
- smb_exit_event_list = NULL;
-
- return;
+ return NT_STATUS_NOT_IMPLEMENTED;
}
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