No matter whether LSM will stay or not, there's no reason to include a
sample module in the build (e.g. Debian kernels are currently shipping
this module).
Signed-off-by: Adrian Bunk <[email protected]>
---
security/Kconfig | 13 ---
security/Makefile | 1
security/root_plug.c | 142 -------------------------------------------
3 files changed, 156 deletions(-)
--- linux-2.6.17-rc1-mm3-full/security/Kconfig.old 2006-04-21 21:08:18.000000000 +0200
+++ linux-2.6.17-rc1-mm3-full/security/Kconfig 2006-04-21 21:09:03.000000000 +0200
@@ -74,19 +74,6 @@
This enables the "default" Linux capabilities functionality.
If you are unsure how to answer this question, answer Y.
-config SECURITY_ROOTPLUG
- tristate "Root Plug Support"
- depends on USB && SECURITY
- help
- This is a sample LSM module that should only be used as such.
- It prevents any programs running with egid == 0 if a specific
- USB device is not present in the system.
-
- See <http://www.linuxjournal.com/article.php?sid=6279> for
- more information about this module.
-
- If you are unsure how to answer this question, answer N.
-
config SECURITY_SECLVL
tristate "BSD Secure Levels"
depends on SECURITY
--- linux-2.6.17-rc1-mm3-full/security/Makefile.old 2006-04-21 21:09:13.000000000 +0200
+++ linux-2.6.17-rc1-mm3-full/security/Makefile 2006-04-21 21:09:24.000000000 +0200
@@ -15,5 +15,4 @@
# Must precede capability.o in order to stack properly.
obj-$(CONFIG_SECURITY_SELINUX) += selinux/built-in.o
obj-$(CONFIG_SECURITY_CAPABILITIES) += commoncap.o capability.o
-obj-$(CONFIG_SECURITY_ROOTPLUG) += commoncap.o root_plug.o
obj-$(CONFIG_SECURITY_SECLVL) += seclvl.o
--- linux-2.6.17-rc1-mm3-full/security/root_plug.c 2006-03-20 06:53:29.000000000 +0100
+++ /dev/null 2006-02-12 01:05:26.000000000 +0100
@@ -1,142 +0,0 @@
-/*
- * Root Plug sample LSM module
- *
- * Originally written for a Linux Journal.
- *
- * Copyright (C) 2002 Greg Kroah-Hartman <[email protected]>
- *
- * Prevents any programs running with egid == 0 if a specific USB device
- * is not present in the system. Yes, it can be gotten around, but is a
- * nice starting point for people to play with, and learn the LSM
- * interface.
- *
- * If you want to turn this into something with a semblance of security,
- * you need to hook the task_* functions also.
- *
- * See http://www.linuxjournal.com/article.php?sid=6279 for more information
- * about this code.
- *
- * 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, version 2 of the
- * License.
- */
-
-#include <linux/config.h>
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/security.h>
-#include <linux/usb.h>
-
-/* flag to keep track of how we were registered */
-static int secondary;
-
-/* default is a generic type of usb to serial converter */
-static int vendor_id = 0x0557;
-static int product_id = 0x2008;
-
-module_param(vendor_id, uint, 0400);
-MODULE_PARM_DESC(vendor_id, "USB Vendor ID of device to look for");
-
-module_param(product_id, uint, 0400);
-MODULE_PARM_DESC(product_id, "USB Product ID of device to look for");
-
-/* should we print out debug messages */
-static int debug = 0;
-
-module_param(debug, bool, 0600);
-MODULE_PARM_DESC(debug, "Debug enabled or not");
-
-#if defined(CONFIG_SECURITY_ROOTPLUG_MODULE)
-#define MY_NAME THIS_MODULE->name
-#else
-#define MY_NAME "root_plug"
-#endif
-
-#define root_dbg(fmt, arg...) \
- do { \
- if (debug) \
- printk(KERN_DEBUG "%s: %s: " fmt , \
- MY_NAME , __FUNCTION__ , \
- ## arg); \
- } while (0)
-
-static int rootplug_bprm_check_security (struct linux_binprm *bprm)
-{
- struct usb_device *dev;
-
- root_dbg("file %s, e_uid = %d, e_gid = %d\n",
- bprm->filename, bprm->e_uid, bprm->e_gid);
-
- if (bprm->e_gid == 0) {
- dev = usb_find_device(vendor_id, product_id);
- if (!dev) {
- root_dbg("e_gid = 0, and device not found, "
- "task not allowed to run...\n");
- return -EPERM;
- }
- usb_put_dev(dev);
- }
-
- return 0;
-}
-
-static struct security_operations rootplug_security_ops = {
- /* Use the capability functions for some of the hooks */
- .ptrace = cap_ptrace,
- .capget = cap_capget,
- .capset_check = cap_capset_check,
- .capset_set = cap_capset_set,
- .capable = cap_capable,
-
- .bprm_apply_creds = cap_bprm_apply_creds,
- .bprm_set_security = cap_bprm_set_security,
-
- .task_post_setuid = cap_task_post_setuid,
- .task_reparent_to_init = cap_task_reparent_to_init,
-
- .bprm_check_security = rootplug_bprm_check_security,
-};
-
-static int __init rootplug_init (void)
-{
- /* register ourselves with the security framework */
- if (register_security (&rootplug_security_ops)) {
- printk (KERN_INFO
- "Failure registering Root Plug module with the kernel\n");
- /* try registering with primary module */
- if (mod_reg_security (MY_NAME, &rootplug_security_ops)) {
- printk (KERN_INFO "Failure registering Root Plug "
- " module with primary security module.\n");
- return -EINVAL;
- }
- secondary = 1;
- }
- printk (KERN_INFO "Root Plug module initialized, "
- "vendor_id = %4.4x, product id = %4.4x\n", vendor_id, product_id);
- return 0;
-}
-
-static void __exit rootplug_exit (void)
-{
- /* remove ourselves from the security framework */
- if (secondary) {
- if (mod_unreg_security (MY_NAME, &rootplug_security_ops))
- printk (KERN_INFO "Failure unregistering Root Plug "
- " module with primary module.\n");
- } else {
- if (unregister_security (&rootplug_security_ops)) {
- printk (KERN_INFO "Failure unregistering Root Plug "
- "module with the kernel\n");
- }
- }
- printk (KERN_INFO "Root Plug module removed\n");
-}
-
-security_initcall (rootplug_init);
-module_exit (rootplug_exit);
-
-MODULE_DESCRIPTION("Root Plug sample LSM module, written for Linux Journal article");
-MODULE_LICENSE("GPL");
-
-
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