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sh: syscall auditing for sh5, too.

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Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Paul Mundt 2007-11-28 19:58:11 +09:00
parent c019fd8839
commit 4b27c47cf8
2 changed files with 31 additions and 19 deletions
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10
arch/sh/kernel/cpu/sh5/entry.S
View file

@ -942,9 +942,6 @@ ret_with_reschedule:
getcon KCR0, r6 ! r6 contains current_thread_info
ld.l r6, TI_FLAGS, r7 ! r7 contains current_thread_info->flags
! FIXME:!!!
! no handling of TIF_SYSCALL_TRACE yet!!
movi _TIF_NEED_RESCHED, r8
and r8, r7, r8
pta work_resched, tr0
@ -1280,14 +1277,17 @@ syscall_allowed:
getcon KCR0, r2
ld.l r2, TI_FLAGS, r4
movi (1 << TIF_SYSCALL_TRACE), r6
movi (_TIF_SYSCALL_TRACE | _TIF_SINGLESTEP | _TIF_SYSCALL_AUDIT), r6
and r6, r4, r6
beq/l r6, ZERO, tr0
/* Trace it by calling syscall_trace before and after */
movi syscall_trace, r4
or SP, ZERO, r2
or ZERO, ZERO, r3
ptabs r4, tr0
blink tr0, LINK
/* Reload syscall number as r5 is trashed by syscall_trace */
ld.q SP, FRAME_S(FSYSCALL_ID), r5
andi r5, 0x1ff, r5
@ -1321,6 +1321,8 @@ syscall_ret_trace:
st.q SP, FRAME_R(9), r2 /* Save return value */
movi syscall_trace, LINK
or SP, ZERO, r2
movi 1, r3
ptabs LINK, tr0
blink tr0, LINK

40
arch/sh/kernel/ptrace_64.c
View file

@ -1,12 +1,8 @@
/*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* arch/sh64/kernel/ptrace.c
* arch/sh/kernel/ptrace_64.c
*
* Copyright (C) 2000, 2001 Paolo Alberelli
* Copyright (C) 2003 Paul Mundt
* Copyright (C) 2003 - 2007 Paul Mundt
*
* Started from SH3/4 version:
* SuperH version: Copyright (C) 1999, 2000 Kaz Kojima & Niibe Yutaka
@ -15,8 +11,10 @@
* By Ross Biro 1/23/92
* edited by Linus Torvalds
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*/
#include <linux/kernel.h>
#include <linux/rwsem.h>
#include <linux/sched.h>
@ -28,7 +26,7 @@
#include <linux/user.h>
#include <linux/signal.h>
#include <linux/syscalls.h>
#include <linux/audit.h>
#include <asm/io.h>
#include <asm/uaccess.h>
#include <asm/pgtable.h>
@ -274,17 +272,23 @@ asmlinkage int sh64_ptrace(long request, long pid, long addr, long data)
return sys_ptrace(request, pid, addr, data);
}
asmlinkage void syscall_trace(void)
asmlinkage void syscall_trace(struct pt_regs *regs, int entryexit)
{
struct task_struct *tsk = current;
if (!test_thread_flag(TIF_SYSCALL_TRACE))
return;
if (!(tsk->ptrace & PT_PTRACED))
return;
if (unlikely(current->audit_context) && entryexit)
audit_syscall_exit(AUDITSC_RESULT(regs->regs[9]),
regs->regs[9]);
if (!test_thread_flag(TIF_SYSCALL_TRACE) &&
!test_thread_flag(TIF_SINGLESTEP))
goto out;
if (!(tsk->ptrace & PT_PTRACED))
goto out;
ptrace_notify(SIGTRAP | ((current->ptrace & PT_TRACESYSGOOD) &&
!test_thread_flag(TIF_SINGLESTEP) ? 0x80 : 0));
ptrace_notify(SIGTRAP | ((current->ptrace & PT_TRACESYSGOOD)
? 0x80 : 0));
/*
* this isn't the same as continuing with a signal, but it will do
* for normal use. strace only continues with a signal if the
@ -294,6 +298,12 @@ asmlinkage void syscall_trace(void)
send_sig(tsk->exit_code, tsk, 1);
tsk->exit_code = 0;
}
out:
if (unlikely(current->audit_context) && !entryexit)
audit_syscall_entry(AUDIT_ARCH_SH, regs->regs[1],
regs->regs[2], regs->regs[3],
regs->regs[4], regs->regs[5]);
}
/* Called with interrupts disabled */