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Subject[PATCH] In-kernel module loader 4/7
Date
Name: init_module removal
Author: Rusty Russell
Status: Trivial

D: Modules in 2.4 can simply name functions init_module() and
D: cleanup_module(), and they will be called at module load and
D: unload. The preferred way is to use module_init(funcname) and
D: module_exit(funcname), and this is the only way once the
D: in-kernel-module loader is included.
D:
D: This is not all of them, just some examples (the ones I needed to
D: successfully compile).

diff -urNp --exclude TAGS -X /home/rusty/current-dontdiff --minimal linux-2.5.35/drivers/net/ethertap.c working-2.5.35-modbase-try-i386/drivers/net/ethertap.c
--- linux-2.5.35/drivers/net/ethertap.c Fri May 24 15:20:21 2002
+++ working-2.5.35-modbase-try-i386/drivers/net/ethertap.c Tue Sep 17 18:50:15 2002
@@ -346,7 +346,7 @@ static struct net_device dev_ethertap =
0, 0, 0, NULL, ethertap_probe
};

-int init_module(void)
+static int init(void)
{
dev_ethertap.base_addr=unit+NETLINK_TAPBASE;
sprintf(dev_ethertap.name,"tap%d",unit);
@@ -360,7 +360,7 @@ int init_module(void)
return 0;
}

-void cleanup_module(void)
+static void cleanup(void)
{
tap_map[dev_ethertap.base_addr]=NULL;
unregister_netdev(&dev_ethertap);
@@ -372,6 +372,10 @@ void cleanup_module(void)
kfree(dev_ethertap.priv);
dev_ethertap.priv = NULL; /* gets re-allocated by ethertap_probe */
}
+
+/* FIXME: Remove Space.c hardcoded crap --RR */
+module_init(init);
+module_exit(cleanup);

#endif /* MODULE */
MODULE_LICENSE("GPL");
diff -urNp --exclude TAGS -X /home/rusty/current-dontdiff --minimal linux-2.5.35/drivers/net/slhc.c working-2.5.35-modbase-try-i386/drivers/net/slhc.c
--- linux-2.5.35/drivers/net/slhc.c Sat Nov 10 12:52:24 2001
+++ working-2.5.35-modbase-try-i386/drivers/net/slhc.c Tue Sep 17 18:54:16 2002
@@ -735,17 +735,20 @@ EXPORT_SYMBOL(slhc_toss);

#ifdef MODULE

-int init_module(void)
+static int init(void)
{
printk(KERN_INFO "CSLIP: code copyright 1989 Regents of the University of California\n");
return 0;
}

-void cleanup_module(void)
+static void fini(void)
{
return;
}

+/* FIXME: Remove hard-coded initializers for builtin case */
+module_init(init);
+module_exit(fini);
#endif /* MODULE */
#else /* CONFIG_INET */

diff -urNp --exclude TAGS -X /home/rusty/current-dontdiff --minimal linux-2.5.35/drivers/parport/init.c working-2.5.35-modbase-try-i386/drivers/parport/init.c
--- linux-2.5.35/drivers/parport/init.c Thu Jul 25 10:13:08 2002
+++ working-2.5.35-modbase-try-i386/drivers/parport/init.c Tue Sep 17 18:56:13 2002
@@ -120,7 +120,7 @@ __setup ("parport=", parport_setup);
#endif

#ifdef MODULE
-int init_module(void)
+static int init(void)
{
#ifdef CONFIG_SYSCTL
parport_default_proc_register ();
@@ -128,12 +128,15 @@ int init_module(void)
return 0;
}

-void cleanup_module(void)
+static void fini(void)
{
#ifdef CONFIG_SYSCTL
parport_default_proc_unregister ();
#endif
}
+
+module_init(init);
+module_exit(fini);

#else

diff -urNp --exclude TAGS -X /home/rusty/current-dontdiff --minimal linux-2.5.35/drivers/parport/parport_pc.c working-2.5.35-modbase-try-i386/drivers/parport/parport_pc.c
--- linux-2.5.35/drivers/parport/parport_pc.c Sat Jul 27 15:24:38 2002
+++ working-2.5.35-modbase-try-i386/drivers/parport/parport_pc.c Tue Sep 17 18:57:17 2002
@@ -3069,7 +3069,7 @@ MODULE_PARM_DESC(verbose_probing, "Log c
MODULE_PARM(verbose_probing, "i");
#endif

-int init_module(void)
+static int init(void)
{
/* Work out how many ports we have, then get parport_share to parse
the irq values. */
@@ -3118,7 +3118,7 @@ int init_module(void)
return ret;
}

-void cleanup_module(void)
+static void fini(void)
{
/* We ought to keep track of which ports are actually ours. */
struct parport *p = parport_enumerate(), *tmp;
@@ -3134,4 +3134,8 @@ void cleanup_module(void)
p = tmp;
}
}
+
+/* FIXME: Merge builtin and modular initializers --RR */
+module_init(init);
+module_exit(fini);
#endif
diff -urNp --exclude TAGS -X /home/rusty/current-dontdiff --minimal linux-2.5.35/net/netlink/netlink_dev.c working-2.5.35-modbase-try-i386/net/netlink/netlink_dev.c
--- linux-2.5.35/net/netlink/netlink_dev.c Sun Aug 11 15:31:47 2002
+++ working-2.5.35-modbase-try-i386/net/netlink/netlink_dev.c Tue Sep 17 18:51:54 2002
@@ -208,16 +208,20 @@ int __init init_netlink(void)

MODULE_LICENSE("GPL");

-int init_module(void)
+static int init(void)
{
printk(KERN_INFO "Network Kernel/User communications module 0.04\n");
return init_netlink();
}

-void cleanup_module(void)
+static void fini(void)
{
devfs_unregister (devfs_handle);
unregister_chrdev(NETLINK_MAJOR, "netlink");
}
+
+/* FIXME: Remove harded init call in socket.c */
+module_init(init);
+module_exit(fini);

#endif
diff -urpN --exclude TAGS -X /home/rusty/devel/kernel/kernel-patches/current-dontdiff --minimal .18828-linux-2.5.35/drivers/char/ftape/zftape/zftape-init.c .18828-linux-2.5.35.updated/drivers/char/ftape/zftape/zftape-init.c
--- .18828-linux-2.5.35/drivers/char/ftape/zftape/zftape-init.c 2002-08-02 11:15:07.000000000 +1000
+++ .18828-linux-2.5.35.updated/drivers/char/ftape/zftape/zftape-init.c 2002-09-18 11:50:20.000000000 +1000
@@ -393,20 +393,26 @@ KERN_INFO


#ifdef MODULE
+
+#if 0 /* FIXME --RR */
/* Called by modules package before trying to unload the module
*/
static int can_unload(void)
{
return (GET_USE_COUNT(THIS_MODULE)||zft_dirty()||test_bit(0,&busy_flag))?-EBUSY:0;
}
+#endif
+
/* Called by modules package when installing the driver
*/
int init_module(void)
{
+#if 0 /*FIXME --RR*/
if (!mod_member_present(&__this_module, can_unload)) {
return -EBUSY;
}
__this_module.can_unload = can_unload;
+#endif
return zft_init();
}

@@ -444,3 +450,5 @@ void cleanup_module(void)
}

#endif /* MODULE */
+
+module_init(init_module);
--
Anyone who quotes me in their sig is an idiot. -- Rusty Russell.
-
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