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/*

 *  Capabilities Linux Security Module

 *

 *      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.

 *

 */

#include <linux/init.h>

#include <linux/kernel.h>

#include <linux/security.h>

#include <linux/file.h>

#include <linux/mm.h>

#include <linux/mman.h>

#include <linux/pagemap.h>

#include <linux/swap.h>

#include <linux/skbuff.h>

#include <linux/netlink.h>

#include <linux/ptrace.h>

#include <linux/moduleparam.h>

static struct security_operations capability_ops = {

        .ptrace =                       cap_ptrace,

        .capget =                       cap_capget,

        .capset_check =                 cap_capset_check,

        .capset_set =                   cap_capset_set,

        .capable =                      cap_capable,

        .settime =                      cap_settime,

        .netlink_send =                 cap_netlink_send,

        .netlink_recv =                 cap_netlink_recv,

        .bprm_apply_creds =             cap_bprm_apply_creds,

        .bprm_set_security =            cap_bprm_set_security,

        .bprm_secureexec =              cap_bprm_secureexec,

        .inode_setxattr =               cap_inode_setxattr,

        .inode_removexattr =            cap_inode_removexattr,

        .inode_need_killpriv =          cap_inode_need_killpriv,

        .inode_killpriv =               cap_inode_killpriv,

        .task_kill =                    cap_task_kill,

        .task_setscheduler =            cap_task_setscheduler,

        .task_setioprio =               cap_task_setioprio,

        .task_setnice =                 cap_task_setnice,

        .task_post_setuid =             cap_task_post_setuid,

        .task_reparent_to_init =        cap_task_reparent_to_init,

        .syslog =                       cap_syslog,

        .vm_enough_memory =             cap_vm_enough_memory,

};

/* flag to keep track of how we were registered */

static int secondary;

static int capability_disable;

module_param_named(disable, capability_disable, int, 0);

static int __init capability_init (void)

{

        if (capability_disable) {

                printk(KERN_INFO "Capabilities disabled at initialization\n");

                return 0;

        }

        /* register ourselves with the security framework */

        if (register_security (&capability_ops)) {

                /* try registering with primary module */

                if (mod_reg_security (KBUILD_MODNAME, &capability_ops)) {

                        printk (KERN_INFO "Failure registering capabilities "

                                "with primary security module.\n");

                        return -EINVAL;

                }

                secondary = 1;

        }

        printk (KERN_INFO "Capability LSM initialized%s\n",

                secondary ? " as secondary" : "");

        return 0;

}

security_initcall (capability_init);