1 files changed, 0 insertions, 228 deletions
diff --git a/runtime/transport/control.c b/runtime/transport/control.c
deleted file mode 100644
index 23e99400..00000000
--- a/runtime/transport/control.c
+++ /dev/null
@@ -1,228 +0,0 @@
-/*
- *  stp-control - stp control channel
- *
- * 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
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * 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
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
- *
- * Copyright (C) IBM Corporation, 2005
- * Copyright (C) Redhat Inc, 2005
- *
- */
-
-/** @file control.c
- * @brief Systemtap control channel functions
- */
-
-/** @addtogroup transport Transport Functions
- * @{
- */
-
-#include <linux/module.h>
-#include <linux/hash.h>
-#include "control.h"
-#include "netlink.h"
-
-/* the control channel */
-struct sock *stp_control;
-
-/* the command handlers hash table */
-static struct hlist_head *handlers;
-
-/* protection for the handlers table */
-static spinlock_t handlers_lock = SPIN_LOCK_UNLOCKED;
-
-/**
- *	_stp_lookup_handler - look up the command handler in the handlers table
- *	@pid: the pid to find the corresponding handler of
- *
- *	Returns the pointer to the cmd_handler struct, NULL if not
- *	found.
- *
- *	NOTE: the handlers_lock must be held when calling this function
- */
-static struct cmd_handler *_stp_lookup_handler(int pid)
-{
-	struct hlist_node *node;
-	struct cmd_handler *handler;
-	unsigned long key = hash_long((unsigned long)pid, HANDLER_SHIFT);
-	struct hlist_head *head = &handlers[key];
-	
-	hlist_for_each(node, head) {
-		handler = hlist_entry(node, struct cmd_handler, hlist);
-		if (handler->pid == pid) {
-			return handler;
-			break;
-		}
-	}
-	
-	return NULL;
-}
-
-/**
- *	_stp_handler_find - find the command handler for a given pid
- *	@pid: the pid to find the corresponding handler of
- *
- *	Returns the pointer to the command handler callback, NULL if
- *	not found.
- */
-static int (*_stp_handler_find(int pid))(int, int, void *)
-{
-	struct cmd_handler *cmd_handler;
-
-	spin_lock(&handlers_lock);
-	cmd_handler = _stp_lookup_handler(pid);
-	spin_unlock(&handlers_lock);
-	
-	if (cmd_handler)
-		return cmd_handler->handler;
-	
-	return NULL;
-}
-
-/**
- *	_stp_ctrl_register - register a command handler for a pid
- *	@pid: the pid to unregister
- *	@cmd_handler: the callback function to be called to handle commands
- *
- *	Adds a pid's command handler to the handler table.  The
- *	command handler will be called to handle commands from the
- *	daemon with the given pid.  Should be called at probe module
- *	initialization before any commands are sent by the daemon.
- */
-int _stp_ctrl_register(int pid,
-		       int (*cmd_handler) (int pid, int cmd, void *data))
-{
-	unsigned long key = hash_long((unsigned long)pid, HANDLER_SHIFT);
-	struct hlist_head *head = &handlers[key];
-	struct cmd_handler *handler;
-
-	spin_lock(&handlers_lock);
-	handler = _stp_lookup_handler(pid);
-	spin_unlock(&handlers_lock);
-
-	if (handler)
-		return -EBUSY;
-
-	handler = kmalloc(sizeof(struct cmd_handler), GFP_KERNEL);
-	if (!handler)
-		return -ENOMEM;
-	handler->pid = pid;
-	handler->handler = cmd_handler;
-	INIT_HLIST_NODE(&handler->hlist);
-
-	spin_lock(&handlers_lock);
-	hlist_add_head(&handler->hlist, head);
-	spin_unlock(&handlers_lock);
-
-	return 0;
-}
-
-/**
- *	_stp_ctrl_unregister - unregister a pid's command handler
- *	@pid: the pid to unregister
- *
- *	Removes the pid's handler from the handler table.  Should be
- *	called when the daemon is no longer sending commands.
- */
-void _stp_ctrl_unregister(int pid)
-{
-	struct cmd_handler *handler;
-	
-	spin_lock(&handlers_lock);
-	handler = _stp_lookup_handler(pid);
-	if (handler) {
-		hlist_del(&handler->hlist);
-		kfree(handler);
-	}
-	spin_unlock(&handlers_lock);
-}
-
-/**
- *	_stp_ctrl_send - send data over the control channel
- *	@type: the type of data being sent
- *	@data: the data
- *	@len: the data length
- *	@pid: the pid to send the data to
- *
- *	Returns the result of the transport's send function.
- */
-int _stp_ctrl_send(int type, void *data, int len, int pid)
-{
-	return _stp_netlink_send(type, data, len, pid);
-}
-
-/**
- *	_stp_ctrl_handler - control channel command dispatcher
- *	@pid: the pid the command is from
- *	@cmd: the command
- *	@data: command-specific data
- *
- *	Returns the result from the pid's command handler, 0 if the
- *	command was handled, non-zero otherwise.
- */
-static int _stp_ctrl_handler(int pid, int cmd, void *data)
-{
-	int (*cmd_handler) (int, int, void *);
-
-	cmd_handler = _stp_handler_find(pid);
-	if (!cmd_handler)
-		return -EINVAL;
-	
-	return cmd_handler(pid, cmd, data);
-}
-
-/**
- *	_stp_ctrl_init - module init function
- */
-static int __init _stp_ctrl_init(void)
-{
-	int i;
-
-	handlers = kmalloc(sizeof(struct hlist_head) * HANDLER_SLOTS, GFP_KERNEL);
-	if (!handlers)
-		return -ENOMEM;
-	
-	for (i = 0; i < HANDLER_SLOTS; i++)
-		INIT_HLIST_HEAD(&handlers[i]);
-
-	stp_control = _stp_netlink_open(NETLINK_USERSOCK, _stp_ctrl_handler);
-	if (!stp_control) {
-		printk ("stp_ctrl: couldn't open netlink socket\n");
-		kfree(handlers);
-		return -ENOMEM;
-	}
-
-	return 0;
-}
-
-/**
- *	_stp_ctrl_exit - module exit function
- */
-static void _stp_ctrl_exit(void)
-{
-	_stp_netlink_close(stp_control);
-	kfree(handlers);
-}
-
-module_init(_stp_ctrl_init);
-module_exit(_stp_ctrl_exit);
-
-EXPORT_SYMBOL_GPL(_stp_ctrl_register);
-EXPORT_SYMBOL_GPL(_stp_ctrl_unregister);
-EXPORT_SYMBOL_GPL(_stp_ctrl_send);
-
-MODULE_DESCRIPTION("SystemTap control channel");
-MODULE_AUTHOR("Tom Zanussi <zanussi@us.ibm.com>");
-MODULE_LICENSE("GPL");
-