forked from luck/tmp_suning_uos_patched
29ef73b7a8
This patch provides functionality to audit system call events on the ARM platform. The implementation was based off the structure of the MIPS platform and information in this (http://lists.fedoraproject.org/pipermail/arm/2009-October/000382.html) mailing list thread. The required audit_syscall_exit and audit_syscall_entry checks were added to ptrace using the standard registers for system call values (r0 through r3). A thread information flag was added for auditing (TIF_SYSCALL_AUDIT) and a meta-flag was added (_TIF_SYSCALL_WORK) to simplify modifications to the syscall entry/exit. Now, if either the TRACE flag is set or the AUDIT flag is set, the syscall_trace function will be executed. The prober changes were made to Kconfig to allow CONFIG_AUDITSYSCALL to be enabled. Due to platform availability limitations, this patch was only tested on the Android platform running the modified "android-goldfish-2.6.29" kernel. A test compile was performed using Code Sourcery's cross-compilation toolset and the current linux-3.0 stable kernel. The changes compile without error. I'm hoping, due to the simple modifications, the patch is "obviously correct". Signed-off-by: Nathaniel Husted <nhusted@gmail.com> Signed-off-by: Eric Paris <eparis@redhat.com>
67 lines
1.9 KiB
C
67 lines
1.9 KiB
C
/*
|
|
* arch/arm/include/asm/kprobes.h
|
|
*
|
|
* Copyright (C) 2006, 2007 Motorola Inc.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
#ifndef _ARM_KPROBES_H
|
|
#define _ARM_KPROBES_H
|
|
|
|
#include <linux/types.h>
|
|
#include <linux/ptrace.h>
|
|
#include <linux/percpu.h>
|
|
|
|
#define __ARCH_WANT_KPROBES_INSN_SLOT
|
|
#define MAX_INSN_SIZE 2
|
|
#define MAX_STACK_SIZE 64 /* 32 would probably be OK */
|
|
|
|
#define flush_insn_slot(p) do { } while (0)
|
|
#define kretprobe_blacklist_size 0
|
|
|
|
typedef u32 kprobe_opcode_t;
|
|
|
|
struct kprobe;
|
|
typedef void (kprobe_insn_handler_t)(struct kprobe *, struct pt_regs *);
|
|
typedef unsigned long (kprobe_check_cc)(unsigned long);
|
|
typedef void (kprobe_insn_singlestep_t)(struct kprobe *, struct pt_regs *);
|
|
typedef void (kprobe_insn_fn_t)(void);
|
|
|
|
/* Architecture specific copy of original instruction. */
|
|
struct arch_specific_insn {
|
|
kprobe_opcode_t *insn;
|
|
kprobe_insn_handler_t *insn_handler;
|
|
kprobe_check_cc *insn_check_cc;
|
|
kprobe_insn_singlestep_t *insn_singlestep;
|
|
kprobe_insn_fn_t *insn_fn;
|
|
};
|
|
|
|
struct prev_kprobe {
|
|
struct kprobe *kp;
|
|
unsigned int status;
|
|
};
|
|
|
|
/* per-cpu kprobe control block */
|
|
struct kprobe_ctlblk {
|
|
unsigned int kprobe_status;
|
|
struct prev_kprobe prev_kprobe;
|
|
struct pt_regs jprobe_saved_regs;
|
|
char jprobes_stack[MAX_STACK_SIZE];
|
|
};
|
|
|
|
void arch_remove_kprobe(struct kprobe *);
|
|
int kprobe_fault_handler(struct pt_regs *regs, unsigned int fsr);
|
|
int kprobe_exceptions_notify(struct notifier_block *self,
|
|
unsigned long val, void *data);
|
|
|
|
|
|
#endif /* _ARM_KPROBES_H */
|