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Date: Wed, 13 Oct 2010 16:20:37 +1000
From: Greg Ungerer <gerg@...pgear.com>
To: <linux-kernel@...r.kernel.org>
CC: <gerg@...inux.org>
Subject: [PATCH] m68knommu: convert to using tracehook_report_syscall_*
Modify syscall_trace() to use the tracehook_report_syscall_entry()
and tracehook_report_syscall_exit() routines.
The actual syscall_trace() call points needed updating to pass in
tne entryexit arg as well.
Signed-off-by: Greg Ungerer <gerg@...inux.org>
---
arch/m68knommu/kernel/ptrace.c | 26 +++++++++++---------------
arch/m68knommu/platform/68328/entry.S | 4 ++++
arch/m68knommu/platform/68360/entry.S | 4 ++++
arch/m68knommu/platform/coldfire/entry.S | 4 ++++
4 files changed, 23 insertions(+), 15 deletions(-)
diff --git a/arch/m68knommu/kernel/ptrace.c b/arch/m68knommu/kernel/ptrace.c
index a32e2de..9d1900a 100644
--- a/arch/m68knommu/kernel/ptrace.c
+++ b/arch/m68knommu/kernel/ptrace.c
@@ -18,6 +18,7 @@
#include <linux/ptrace.h>
#include <linux/user.h>
#include <linux/signal.h>
+#include <linux/tracehook.h>
#include <asm/uaccess.h>
#include <asm/page.h>
@@ -241,21 +242,16 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
return ret;
}
-asmlinkage void syscall_trace(void)
+asmlinkage int syscall_trace(int entryexit)
{
- if (!test_thread_flag(TIF_SYSCALL_TRACE))
- return;
- if (!(current->ptrace & PT_PTRACED))
- return;
- 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
- * stopping signal is not SIGTRAP. -brl
- */
- if (current->exit_code) {
- send_sig(current->exit_code, current, 1);
- current->exit_code = 0;
+ int ret = 0;
+
+ if (test_thread_flag(TIF_SYSCALL_TRACE)) {
+ if (entryexit)
+ tracehook_report_syscall_exit(task_pt_regs(current), 0);
+ else
+ ret = tracehook_report_syscall_entry(task_pt_regs(current));
}
+
+ return ret;
}
diff --git a/arch/m68knommu/platform/68328/entry.S b/arch/m68knommu/platform/68328/entry.S
index b3d8d73..983370d 100644
--- a/arch/m68knommu/platform/68328/entry.S
+++ b/arch/m68knommu/platform/68328/entry.S
@@ -46,7 +46,9 @@ do_trace:
movel #-ENOSYS,%sp@(PT_OFF_D0) /* needed for strace*/
subql #4,%sp
SAVE_SWITCH_STACK
+ clrl %sp@-
jbsr syscall_trace
+ addql #4,%sp
RESTORE_SWITCH_STACK
addql #4,%sp
movel %sp@(PT_OFF_ORIG_D0),%d1
@@ -60,7 +62,9 @@ do_trace:
1: movel %d0,%sp@(PT_OFF_D0) /* save the return value */
subql #4,%sp /* dummy return address */
SAVE_SWITCH_STACK
+ movel #1,%sp@-
jbsr syscall_trace
+ addql #4,%sp
ret_from_signal:
RESTORE_SWITCH_STACK
diff --git a/arch/m68knommu/platform/68360/entry.S b/arch/m68knommu/platform/68360/entry.S
index 5c50473..601b6c0 100644
--- a/arch/m68knommu/platform/68360/entry.S
+++ b/arch/m68knommu/platform/68360/entry.S
@@ -42,7 +42,9 @@ do_trace:
movel #-ENOSYS,%sp@(PT_OFF_D0) /* needed for strace*/
subql #4,%sp
SAVE_SWITCH_STACK
+ clrl %sp@-
jbsr syscall_trace
+ addql #4,%sp
RESTORE_SWITCH_STACK
addql #4,%sp
movel %sp@(PT_OFF_ORIG_D0),%d1
@@ -56,7 +58,9 @@ do_trace:
1: movel %d0,%sp@(PT_OFF_D0) /* save the return value */
subql #4,%sp /* dummy return address */
SAVE_SWITCH_STACK
+ movel #1,%sp@-
jbsr syscall_trace
+ addql #4,%sp
ret_from_signal:
RESTORE_SWITCH_STACK
diff --git a/arch/m68knommu/platform/coldfire/entry.S b/arch/m68knommu/platform/coldfire/entry.S
index dd7d591..c4bbb48 100644
--- a/arch/m68knommu/platform/coldfire/entry.S
+++ b/arch/m68knommu/platform/coldfire/entry.S
@@ -88,7 +88,9 @@ ENTRY(system_call)
movel %d2,PT_OFF_D0(%sp) /* on syscall entry */
subql #4,%sp
SAVE_SWITCH_STACK
+ clrl %sp@-
jbsr syscall_trace
+ addql #4,%sp
RESTORE_SWITCH_STACK
addql #4,%sp
movel %d3,%a0
@@ -96,7 +98,9 @@ ENTRY(system_call)
movel %d0,%sp@(PT_OFF_D0) /* save the return value */
subql #4,%sp /* dummy return address */
SAVE_SWITCH_STACK
+ movel #1,%sp@-
jbsr syscall_trace
+ addql #4,%sp
ret_from_signal:
RESTORE_SWITCH_STACK
--
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