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76 lines
1.8 KiB
76 lines
1.8 KiB
/*
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* Copyright (c) 2018 Samsung Electronics Co., Ltd. All Rights Reserved
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2
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* as published by the Free Software Foundation.
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*/
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#include <asm/uaccess.h>
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#include <linux/device.h>
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/types.h>
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#include <linux/syscalls.h>
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#include <linux/unistd.h>
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#include "include/defex_caches.h"
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#include "include/defex_catch_list.h"
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#include "include/defex_internal.h"
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MODULE_DESCRIPTION("Defex Linux Security Module");
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asmlinkage int defex_syscall_enter(long int syscallno, struct pt_regs *regs);
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asmlinkage int (* const defex_syscall_catch_enter)(long int syscallno, struct pt_regs *regs) = defex_syscall_enter;
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asmlinkage int defex_syscall_enter(long int syscallno, struct pt_regs *regs)
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{
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long err;
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const struct local_syscall_struct *item;
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if (!current)
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return 0;
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#if !defined(__arm__) && defined(CONFIG_COMPAT)
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if (regs->pstate & PSR_MODE32_BIT)
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item = get_local_syscall_compat(syscallno);
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else
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#endif /* __arm__ && CONFIG_COMPAT */
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item = get_local_syscall(syscallno);
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if (!item)
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return 0;
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err = item->err_code;
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if (err) {
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if (task_defex_enforce(current, NULL, item->local_syscall))
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return err;
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}
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return 0;
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}
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//INIT/////////////////////////////////////////////////////////////////////////
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static __init int defex_lsm_init(void)
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{
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int ret;
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#ifdef DEFEX_CACHES_ENABLE
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defex_file_cache_init();
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#endif /* DEFEX_CACHES_ENABLE */
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creds_fast_hash_init();
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#ifdef DEFEX_PED_ENABLE
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hash_init(creds_hash);
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#endif /* DEFEX_PED_ENABLE */
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ret = defex_init_sysfs();
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if (ret) {
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pr_crit("DEFEX_LSM defex_init_sysfs() failed!");
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return ret;
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}
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printk(KERN_INFO "DEFEX_LSM started");
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return 0;
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}
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module_init(defex_lsm_init);
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