Factor out common ptrace code and PTRACE_SETOPTIONS

Support PTRACE_O_TRACESYSGOOD on all platforms

31 files changed, 98 insertions, 166 deletions

diff --git a/arch/alpha/kernel/ptrace.c b/arch/alpha/kernel/ptrace.c
index c73317b256ae..1f9ac636c1dc 100644
--- a/arch/alpha/kernel/ptrace.c
+++ b/arch/alpha/kernel/ptrace.c
@@ -383,7 +383,7 @@ sys_ptrace(long request, long pid, long addr, long data,
 		goto out;
 
 	default:
-		ret = -EIO;
+		ret = ptrace_request(child, request, addr, data);
 		goto out;
 	}
  out:
@@ -400,7 +400,8 @@ syscall_trace(void)
 		return;
 	if (!(current->ptrace & PT_PTRACED))
 		return;
-	current->exit_code = SIGTRAP;
+	current->exit_code = SIGTRAP | ((current->ptrace & PT_TRACESYSGOOD)
+					? 0x80 : 0);
 	current->state = TASK_STOPPED;
 	notify_parent(current, SIGCHLD);
 	schedule();
diff --git a/arch/arm/kernel/ptrace.c b/arch/arm/kernel/ptrace.c
index 9f325ea5dda6..0ebfa584d5e1 100644
--- a/arch/arm/kernel/ptrace.c
+++ b/arch/arm/kernel/ptrace.c
@@ -629,16 +629,8 @@ static int do_ptrace(int request, struct task_struct *child, long addr, long dat
 			ret = ptrace_setfpregs(child, (void *)data);
 			break;
 
-		case PTRACE_SETOPTIONS:
-			if (data & PTRACE_O_TRACESYSGOOD)
-				child->ptrace |= PT_TRACESYSGOOD;
-			else
-				child->ptrace &= ~PT_TRACESYSGOOD;
-			ret = 0;
-			break;
-
 		default:
-			ret = -EIO;
+			ret = ptrace_request(child, request, addr, data);
 			break;
 	}
 
diff --git a/arch/cris/kernel/ptrace.c b/arch/cris/kernel/ptrace.c
index 59f7d38fe4cd..b4e1f9282694 100644
--- a/arch/cris/kernel/ptrace.c
+++ b/arch/cris/kernel/ptrace.c
@@ -292,7 +292,7 @@ asmlinkage int sys_ptrace(long request, long pid, long addr, long data)
 		}
 
 		default:
-			ret = -EIO;
+			ret = ptrace_request(child, request, addr, data);
 			break;
 	}
 out_tsk:
@@ -307,10 +307,8 @@ asmlinkage void syscall_trace(void)
 	if ((current->ptrace & (PT_PTRACED | PT_TRACESYS)) !=
 	    (PT_PTRACED | PT_TRACESYS))
 		return;
-	/* TODO: make a way to distinguish between a syscall stop and SIGTRAP
-	 * delivery like in the i386 port ? 
-	 */
-	current->exit_code = SIGTRAP;
+	current->exit_code = SIGTRAP | ((current->ptrace & PT_TRACESYSGOOD)
+					? 0x80 : 0);
 	current->state = TASK_STOPPED;
 	notify_parent(current, SIGCHLD);
 	schedule();
diff --git a/arch/i386/kernel/ptrace.c b/arch/i386/kernel/ptrace.c
index a10602335c56..60000c57ae3a 100644
--- a/arch/i386/kernel/ptrace.c
+++ b/arch/i386/kernel/ptrace.c
@@ -425,17 +425,8 @@ asmlinkage int sys_ptrace(long request, long pid, long addr, long data)
 		break;
 	}
 
-	case PTRACE_SETOPTIONS: {
-		if (data & PTRACE_O_TRACESYSGOOD)
-			child->ptrace |= PT_TRACESYSGOOD;
-		else
-			child->ptrace &= ~PT_TRACESYSGOOD;
-		ret = 0;
-		break;
-	}
-
 	default:
-		ret = -EIO;
+		ret = ptrace_request(child, request, addr, data);
 		break;
 	}
 out_tsk:
diff --git a/arch/ia64/ia32/sys_ia32.c b/arch/ia64/ia32/sys_ia32.c
index 9a49666f2b6e..d6d18c90b758 100644
--- a/arch/ia64/ia32/sys_ia32.c
+++ b/arch/ia64/ia32/sys_ia32.c
@@ -3084,7 +3084,7 @@ sys32_ptrace (int request, pid_t pid, unsigned int addr, unsigned int data,
 		break;
 
 	      default:
-		ret = -EIO;
+		ret = ptrace_request(child, request, addr, data);
 		break;
 
 	}
diff --git a/arch/ia64/kernel/ptrace.c b/arch/ia64/kernel/ptrace.c
index 7b58ee45121a..b3b9ab4f4656 100644
--- a/arch/ia64/kernel/ptrace.c
+++ b/arch/ia64/kernel/ptrace.c
@@ -1268,16 +1268,8 @@ sys_ptrace (long request, pid_t pid, unsigned long addr, unsigned long data,
 		ret = ptrace_setregs(child, (struct pt_all_user_regs*) data);
 		goto out_tsk;
 
-	      case PTRACE_SETOPTIONS:
-		if (data & PTRACE_O_TRACESYSGOOD)
-			child->ptrace |= PT_TRACESYSGOOD;
-		else
-			child->ptrace &= ~PT_TRACESYSGOOD;
-		ret = 0;
-		break;
-
 	      default:
-		ret = -EIO;
+		ret = ptrace_request(child, request, addr, data);
 		goto out_tsk;
 	}
   out_tsk:
diff --git a/arch/m68k/kernel/ptrace.c b/arch/m68k/kernel/ptrace.c
index cba62cc1c115..f6522a41b6e9 100644
--- a/arch/m68k/kernel/ptrace.c
+++ b/arch/m68k/kernel/ptrace.c
@@ -355,7 +355,7 @@ asmlinkage int sys_ptrace(long request, long pid, long addr, long data)
 		}
 
 		default:
-			ret = -EIO;
+			ret = ptrace_request(child, request, addr, data);
 			break;
 	}
 out_tsk:
@@ -370,7 +370,8 @@ asmlinkage void syscall_trace(void)
 	if (!current->thread.work.delayed_trace &&
 	    !current->thread.work.syscall_trace)
 		return;
-	current->exit_code = SIGTRAP;
+	current->exit_code = SIGTRAP | ((current->ptrace & PT_TRACESYSGOOD)
+					? 0x80 : 0);
 	current->state = TASK_STOPPED;
 	notify_parent(current, SIGCHLD);
 	schedule();
diff --git a/arch/mips/kernel/ptrace.c b/arch/mips/kernel/ptrace.c
index 511ef439f4d2..90601f455433 100644
--- a/arch/mips/kernel/ptrace.c
+++ b/arch/mips/kernel/ptrace.c
@@ -304,16 +304,8 @@ asmlinkage int sys_ptrace(long request, long pid, long addr, long data)
 		res = ptrace_detach(child, data);
 		break;
 
-	case PTRACE_SETOPTIONS:
-		if (data & PTRACE_O_TRACESYSGOOD)
-			child->ptrace |= PT_TRACESYSGOOD;
-		else
-			child->ptrace &= ~PT_TRACESYSGOOD;
-		res = 0;
-		break;
-
 	default:
-		res = -EIO;
+		res = ptrace_request(child, request, addr, data);
 		goto out;
 	}
 out_tsk:
diff --git a/arch/mips64/kernel/ptrace.c b/arch/mips64/kernel/ptrace.c
index 874ccc438aa7..3f79d3db6989 100644
--- a/arch/mips64/kernel/ptrace.c
+++ b/arch/mips64/kernel/ptrace.c
@@ -275,17 +275,8 @@ asmlinkage int sys32_ptrace(int request, int pid, int addr, int data)
 		ret = ptrace_detach(child, data);
 		break;
 
-	case PTRACE_SETOPTIONS: {
-		if (data & PTRACE_O_TRACESYSGOOD)
-			child->ptrace |= PT_TRACESYSGOOD;
-		else
-			child->ptrace &= ~PT_TRACESYSGOOD;
-		ret = 0;
-		break;
-	}
-
 	default:
-		ret = -EIO;
+		ret = ptrace_request(child, request, addr, data);
 		break;
 	}
 
@@ -535,17 +526,8 @@ asmlinkage int sys_ptrace(long request, long pid, long addr, long data)
 		ret = ptrace_detach(child, data);
 		break;
 
-	case PTRACE_SETOPTIONS: {
-		if (data & PTRACE_O_TRACESYSGOOD)
-			child->ptrace |= PT_TRACESYSGOOD;
-		else
-			child->ptrace &= ~PT_TRACESYSGOOD;
-		ret = 0;
-		break;
-	}
-
 	default:
-		ret = -EIO;
+		ret = ptrace_request(child, request, addr, data);
 		break;
 	}
 
diff --git a/arch/parisc/kernel/ptrace.c b/arch/parisc/kernel/ptrace.c
index d44e0238d8ac..aedcdbbeed07 100644
--- a/arch/parisc/kernel/ptrace.c
+++ b/arch/parisc/kernel/ptrace.c
@@ -244,7 +244,7 @@ long sys_ptrace(long request, pid_t pid, long addr, long data)
 		goto out_tsk;
 
 	default:
-		ret = -EIO;
+		ret = ptrace_request(child, request, addr, data);
 		goto out_tsk;
 	}
 
@@ -269,7 +269,8 @@ void syscall_trace(void)
 	if ((current->ptrace & (PT_PTRACED|PT_TRACESYS)) !=
 			(PT_PTRACED|PT_TRACESYS))
 		return;
-	current->exit_code = SIGTRAP;
+	current->exit_code = SIGTRAP | ((current->ptrace & PT_TRACESYSGOOD)
+					? 0x80 : 0);
 	current->state = TASK_STOPPED;
 	notify_parent(current, SIGCHLD);
 	schedule();
diff --git a/arch/ppc/kernel/ptrace.c b/arch/ppc/kernel/ptrace.c
index 3eda630f9977..dfc3b477ddd7 100644
--- a/arch/ppc/kernel/ptrace.c
+++ b/arch/ppc/kernel/ptrace.c
@@ -342,7 +342,7 @@ int sys_ptrace(long request, long pid, long addr, long data)
 #endif
 
 	default:
-		ret = -EIO;
+		ret = ptrace_request(child, request, addr, data);
 		break;
 	}
 out_tsk:
@@ -357,7 +357,8 @@ void do_syscall_trace(void)
         if (!test_thread_flag(TIF_SYSCALL_TRACE)
 	    || !(current->ptrace & PT_PTRACED))
 		return;
-	current->exit_code = SIGTRAP;
+	current->exit_code = SIGTRAP | ((current->ptrace & PT_TRACESYSGOOD)
+					? 0x80 : 0);
 	current->state = TASK_STOPPED;
 	notify_parent(current, SIGCHLD);
 	schedule();
diff --git a/arch/ppc64/kernel/ptrace.c b/arch/ppc64/kernel/ptrace.c
index c71b738092d4..1b55b7903a30 100644
--- a/arch/ppc64/kernel/ptrace.c
+++ b/arch/ppc64/kernel/ptrace.c
@@ -258,7 +258,7 @@ int sys_ptrace(long request, long pid, long addr, long data)
 	}
 
 	default:
-		ret = -EIO;
+		ret = ptrace_request(child, request, addr, data);
 		break;
 	}
 out_tsk:
@@ -274,7 +274,8 @@ void do_syscall_trace(void)
 		return;
 	if (!(current->ptrace & PT_PTRACED))
 		return;
-	current->exit_code = SIGTRAP;
+	current->exit_code = SIGTRAP | ((current->ptrace & PT_TRACESYSGOOD)
+					? 0x80 : 0);
 	current->state = TASK_STOPPED;
 	notify_parent(current, SIGCHLD);
 	schedule();
diff --git a/arch/ppc64/kernel/ptrace32.c b/arch/ppc64/kernel/ptrace32.c
index cf863b29e2e0..441b9f3e1f02 100644
--- a/arch/ppc64/kernel/ptrace32.c
+++ b/arch/ppc64/kernel/ptrace32.c
@@ -345,7 +345,7 @@ int sys32_ptrace(long request, long pid, unsigned long addr, unsigned long data)
 		break;
 
 	default:
-		ret = -EIO;
+		ret = ptrace_request(child, request, addr, data);
 		break;
 	}
 out_tsk:
diff --git a/arch/s390/kernel/ptrace.c b/arch/s390/kernel/ptrace.c
index ff361cbc2abb..134146f80e2e 100644
--- a/arch/s390/kernel/ptrace.c
+++ b/arch/s390/kernel/ptrace.c
@@ -346,16 +346,8 @@ asmlinkage int sys_ptrace(long request, long pid, long addr, long data)
 		   ret=copy_user(child,parea.kernel_addr,parea.process_addr,
 				 parea.len,1,(request==PTRACE_POKEUSR_AREA));
 		break;
-	case PTRACE_SETOPTIONS: {
-		if (data & PTRACE_O_TRACESYSGOOD)
-			child->ptrace |= PT_TRACESYSGOOD;
-		else
-			child->ptrace &= ~PT_TRACESYSGOOD;
-		ret = 0;
-		break;
-	}
 	default:
-		ret = -EIO;
+		ret = ptrace_request(child, request, addr, data);
 		break;
 	}
  out_tsk:
diff --git a/arch/s390x/kernel/ptrace.c b/arch/s390x/kernel/ptrace.c
index bd3dd773a94b..9671740cc9c5 100644
--- a/arch/s390x/kernel/ptrace.c
+++ b/arch/s390x/kernel/ptrace.c
@@ -576,16 +576,8 @@ asmlinkage int sys_ptrace(long request, long pid, long addr, long data)
 					      parea.len,1,(request==PTRACE_POKEUSR_AREA));
 		}
 		break;
-	case PTRACE_SETOPTIONS: {
-		if (data & PTRACE_O_TRACESYSGOOD)
-			child->ptrace |= PT_TRACESYSGOOD;
-		else
-			child->ptrace &= ~PT_TRACESYSGOOD;
-		ret = 0;
-		break;
-	}
 	default:
-		ret = -EIO;
+		ret = ptrace_request(child, request, addr, data);
 		break;
 	}
  out_tsk:
diff --git a/arch/sh/kernel/ptrace.c b/arch/sh/kernel/ptrace.c
index baee23d8e3b4..2ec58a8e9f84 100644
--- a/arch/sh/kernel/ptrace.c
+++ b/arch/sh/kernel/ptrace.c
@@ -356,17 +356,8 @@ asmlinkage int sys_ptrace(long request, long pid, long addr, long data)
 		ret = ptrace_detach(child, data);
 		break;
 
-	case PTRACE_SETOPTIONS: {
-		if (data & PTRACE_O_TRACESYSGOOD)
-			child->ptrace |= PT_TRACESYSGOOD;
-		else
-			child->ptrace &= ~PT_TRACESYSGOOD;
-		ret = 0;
-		break;
-	}
-
 	default:
-		ret = -EIO;
+		ret = ptrace_request(child, request, addr, data);
 		break;
 	}
 out_tsk:
diff --git a/arch/sparc/kernel/ptrace.c b/arch/sparc/kernel/ptrace.c
index e7daf14ea25d..3af8e63ca653 100644
--- a/arch/sparc/kernel/ptrace.c
+++ b/arch/sparc/kernel/ptrace.c
@@ -584,10 +584,15 @@ asmlinkage void do_ptrace(struct pt_regs *regs)
 
 	/* PTRACE_DUMPCORE unsupported... */
 
-	default:
-		pt_error_return(regs, EIO);
+	default: {
+		int err = ptrace_request(child, request, addr, data);
+		if (err)
+			pt_error_return(regs, -err);
+		else
+			pt_succ_return(regs, 0);
 		goto out_tsk;
 	}
+	}
 out_tsk:
 	if (child)
 		put_task_struct(child);
@@ -604,7 +609,8 @@ asmlinkage void syscall_trace(void)
 		return;
 	if (!(current->ptrace & PT_PTRACED))
 		return;
-	current->exit_code = SIGTRAP;
+	current->exit_code = SIGTRAP | ((current->ptrace & PT_TRACESYSGOOD)
+					? 0x80 : 0);
 	current->state = TASK_STOPPED;
 	current->thread.flags ^= MAGIC_CONSTANT;
 	notify_parent(current, SIGCHLD);
diff --git a/arch/sparc64/kernel/ptrace.c b/arch/sparc64/kernel/ptrace.c
index c1ef6e0c2b4c..7417163890b7 100644
--- a/arch/sparc64/kernel/ptrace.c
+++ b/arch/sparc64/kernel/ptrace.c
@@ -571,10 +571,15 @@ asmlinkage void do_ptrace(struct pt_regs *regs)
 
 	/* PTRACE_DUMPCORE unsupported... */
 
-	default:
-		pt_error_return(regs, EIO);
+	default: {
+		int err = ptrace_request(child, request, addr, data);
+		if (err)
+			pt_error_return(regs, -err);
+		else
+			pt_succ_return(regs, 0);
 		goto out_tsk;
 	}
+	}
 flush_and_out:
 	{
 		unsigned long va;
@@ -612,7 +617,8 @@ asmlinkage void syscall_trace(void)
 		return;
 	if (!(current->ptrace & PT_PTRACED))
 		return;
-	current->exit_code = SIGTRAP;
+	current->exit_code = SIGTRAP | ((current->ptrace & PT_TRACESYSGOOD)
+					? 0x80 : 0);
 	current->state = TASK_STOPPED;
 	notify_parent(current, SIGCHLD);
 	schedule();
diff --git a/arch/x86_64/ia32/ptrace32.c b/arch/x86_64/ia32/ptrace32.c
index cc27bee8ee1c..38ecc525c40a 100644
--- a/arch/x86_64/ia32/ptrace32.c
+++ b/arch/x86_64/ia32/ptrace32.c
@@ -172,17 +172,6 @@ asmlinkage long sys32_ptrace(long request, u32 pid, u32 addr, u32 data)
 	__u32 val;
 
 	switch (request) { 
-	case PTRACE_TRACEME:
-	case PTRACE_ATTACH:
-	case PTRACE_SYSCALL:
-	case PTRACE_CONT:
-	case PTRACE_KILL:
-	case PTRACE_SINGLESTEP:
-	case PTRACE_DETACH:
-	case PTRACE_SETOPTIONS:
-		ret = sys_ptrace(request, pid, addr, data); 
-		return ret;
-
 	case PTRACE_PEEKTEXT:
 	case PTRACE_PEEKDATA:
 	case PTRACE_POKEDATA:
@@ -198,7 +187,8 @@ asmlinkage long sys32_ptrace(long request, u32 pid, u32 addr, u32 data)
 		break;
 		
 	default:
-		return -EIO;
+		ret = sys_ptrace(request, pid, addr, data); 
+		return ret;
 	} 
 
 	child = find_target(request, pid, &ret);
diff --git a/arch/x86_64/kernel/ptrace.c b/arch/x86_64/kernel/ptrace.c
index c3420450439c..f74c9fe947c0 100644
--- a/arch/x86_64/kernel/ptrace.c
+++ b/arch/x86_64/kernel/ptrace.c
@@ -396,17 +396,8 @@ asmlinkage long sys_ptrace(long request, long pid, long addr, long data)
 		break;
 	}
 
-	case PTRACE_SETOPTIONS: {
-		if (data & PTRACE_O_TRACESYSGOOD)
-			child->ptrace |= PT_TRACESYSGOOD;
-		else
-			child->ptrace &= ~PT_TRACESYSGOOD;
-		ret = 0;
-		break;
-	}
-
 	default:
-		ret = -EIO;
+		ret = ptrace_request(child, request, addr, data);
 		break;
 	}
 out_tsk:
diff --git a/include/asm-arm/ptrace.h b/include/asm-arm/ptrace.h
index 0e4482b8c7ab..eaf50e3bd63e 100644
--- a/include/asm-arm/ptrace.h
+++ b/include/asm-arm/ptrace.h
@@ -6,10 +6,7 @@
 #define PTRACE_GETFPREGS	14
 #define PTRACE_SETFPREGS	15
 
-#define PTRACE_SETOPTIONS	21
-
-/* options set using PTRACE_SETOPTIONS */
-#define PTRACE_O_TRACESYSGOOD	0x00000001
+#define PTRACE_OLDSETOPTIONS	21
 
 #include <asm/proc/ptrace.h>
 
diff --git a/include/asm-i386/ptrace.h b/include/asm-i386/ptrace.h
index ae1ee677118d..4e72df9eb0dc 100644
--- a/include/asm-i386/ptrace.h
+++ b/include/asm-i386/ptrace.h
@@ -49,10 +49,7 @@ struct pt_regs {
 #define PTRACE_GETFPXREGS         18
 #define PTRACE_SETFPXREGS         19
 
-#define PTRACE_SETOPTIONS         21
-
-/* options set using PTRACE_SETOPTIONS */
-#define PTRACE_O_TRACESYSGOOD     0x00000001
+#define PTRACE_OLDSETOPTIONS         21
 
 #ifdef __KERNEL__
 #define user_mode(regs) ((VM_MASK & (regs)->eflags) || (3 & (regs)->xcs))
diff --git a/include/asm-ia64/ptrace.h b/include/asm-ia64/ptrace.h
index 844975e0faf4..eb33ef4579f7 100644
--- a/include/asm-ia64/ptrace.h
+++ b/include/asm-ia64/ptrace.h
@@ -287,9 +287,6 @@ struct pt_all_user_regs {
 #define PTRACE_GETREGS		18	/* get all registers (pt_all_user_regs) in one shot */
 #define PTRACE_SETREGS		19	/* set all registers (pt_all_user_regs) in one shot */
 
-#define PTRACE_SETOPTIONS	21
-
-/* options set using PTRACE_SETOPTIONS */
-#define PTRACE_O_TRACESYSGOOD	0x00000001
+#define PTRACE_OLDSETOPTIONS	21
 
 #endif /* _ASM_IA64_PTRACE_H */
diff --git a/include/asm-mips/ptrace.h b/include/asm-mips/ptrace.h
index 39ac6cea4c49..c52592cbbbe0 100644
--- a/include/asm-mips/ptrace.h
+++ b/include/asm-mips/ptrace.h
@@ -59,10 +59,7 @@ struct pt_regs {
 /* #define PTRACE_GETFPXREGS		18 */
 /* #define PTRACE_SETFPXREGS		19 */
 
-#define PTRACE_SETOPTIONS	21
-
-/* options set using PTRACE_SETOPTIONS */
-#define PTRACE_O_TRACESYSGOOD	0x00000001
+#define PTRACE_OLDSETOPTIONS	21
 
 #ifdef _LANGUAGE_ASSEMBLY
 #include <asm/offset.h>
diff --git a/include/asm-mips64/ptrace.h b/include/asm-mips64/ptrace.h
index 773f8a0c03c3..f62c31f83037 100644
--- a/include/asm-mips64/ptrace.h
+++ b/include/asm-mips64/ptrace.h
@@ -64,10 +64,7 @@ struct pt_regs {
 /* #define PTRACE_GETFPXREGS		18 */
 /* #define PTRACE_SETFPXREGS		19 */
 
-#define PTRACE_SETOPTIONS	21
-
-/* options set using PTRACE_SETOPTIONS */
-#define PTRACE_O_TRACESYSGOOD	0x00000001
+#define PTRACE_OLDSETOPTIONS	21
 
 #ifdef _LANGUAGE_ASSEMBLY
 #include <asm/offset.h>
diff --git a/include/asm-s390/ptrace.h b/include/asm-s390/ptrace.h
index edc3b5b5c1f2..e631c7833816 100644
--- a/include/asm-s390/ptrace.h
+++ b/include/asm-s390/ptrace.h
@@ -105,10 +105,7 @@
 
 #define STACK_FRAME_OVERHEAD	96	/* size of minimum stack frame */
 
-#define PTRACE_SETOPTIONS         21
-
-/* options set using PTRACE_SETOPTIONS */
-#define PTRACE_O_TRACESYSGOOD     0x00000001
+#define PTRACE_OLDSETOPTIONS         21
 
 #ifndef __ASSEMBLY__
 #include <linux/config.h>
diff --git a/include/asm-s390x/ptrace.h b/include/asm-s390x/ptrace.h
index 311d6624a6d0..590623ba5468 100644
--- a/include/asm-s390x/ptrace.h
+++ b/include/asm-s390x/ptrace.h
@@ -85,10 +85,7 @@
 
 #define STACK_FRAME_OVERHEAD    160      /* size of minimum stack frame */
 
-#define PTRACE_SETOPTIONS         21
-
-/* options set using PTRACE_SETOPTIONS */
-#define PTRACE_O_TRACESYSGOOD     0x00000001
+#define PTRACE_OLDSETOPTIONS         21
 
 #ifndef __ASSEMBLY__
 #include <linux/config.h>
diff --git a/include/asm-sh/ptrace.h b/include/asm-sh/ptrace.h
index a799e15f90de..71333b7415a8 100644
--- a/include/asm-sh/ptrace.h
+++ b/include/asm-sh/ptrace.h
@@ -44,10 +44,7 @@
 #define REG_XDREG14	47
 #define REG_FPSCR	48
 
-#define PTRACE_SETOPTIONS         21
-
-/* options set using PTRACE_SETOPTIONS */
-#define PTRACE_O_TRACESYSGOOD     0x00000001
+#define PTRACE_OLDSETOPTIONS         21
 
 /*
  * This struct defines the way the registers are stored on the
diff --git a/include/asm-x86_64/ptrace.h b/include/asm-x86_64/ptrace.h
index 0de905b1137b..15f69a1a6bf7 100644
--- a/include/asm-x86_64/ptrace.h
+++ b/include/asm-x86_64/ptrace.h
@@ -32,10 +32,7 @@
 /* top of stack page */ 
 #define FRAME_SIZE 168
 
-#define PTRACE_SETOPTIONS         21
-
-/* options set using PTRACE_SETOPTIONS */
-#define PTRACE_O_TRACESYSGOOD     0x00000001
+#define PTRACE_OLDSETOPTIONS         21
 
 /* Dummy values for ptrace */ 
 #define FS 1000 
diff --git a/include/linux/ptrace.h b/include/linux/ptrace.h
index a0378ef64867..8d4f8dcefbab 100644
--- a/include/linux/ptrace.h
+++ b/include/linux/ptrace.h
@@ -23,6 +23,12 @@
 
 #define PTRACE_SYSCALL		  24
 
+/* 0x4200-0x4300 are reserved for architecture-independent additions.  */
+#define PTRACE_SETOPTIONS	0x4200
+
+/* options set using PTRACE_SETOPTIONS */
+#define PTRACE_O_TRACESYSGOOD	0x00000001
+
 #include <asm/ptrace.h>
 #include <linux/sched.h>
 
@@ -32,6 +38,7 @@ extern int ptrace_attach(struct task_struct *tsk);
 extern int ptrace_detach(struct task_struct *, unsigned int);
 extern void ptrace_disable(struct task_struct *);
 extern int ptrace_check_attach(struct task_struct *task, int kill);
+extern int ptrace_request(struct task_struct *child, long request, long addr, long data);
 extern void __ptrace_link(struct task_struct *child,
 				struct task_struct *new_parent);
 extern void __ptrace_unlink(struct task_struct *child);
diff --git a/kernel/ptrace.c b/kernel/ptrace.c
index cc7a76bb65b7..ab3aa39a38cf 100644
--- a/kernel/ptrace.c
+++ b/kernel/ptrace.c
@@ -248,3 +248,35 @@ int ptrace_writedata(struct task_struct *tsk, char * src, unsigned long dst, int
 	}
 	return copied;
 }
+
+int ptrace_setoptions(struct task_struct *child, long data)
+{
+	if (data & PTRACE_O_TRACESYSGOOD)
+		child->ptrace |= PT_TRACESYSGOOD;
+	else
+		child->ptrace &= ~PT_TRACESYSGOOD;
+
+	if ((data & PTRACE_O_TRACESYSGOOD) != data)
+		return -EINVAL;
+
+	return 0;
+}
+
+int ptrace_request(struct task_struct *child, long request,
+		   long addr, long data)
+{
+	int ret = -EIO;
+
+	switch (request) {
+#ifdef PTRACE_OLDSETOPTIONS
+	case PTRACE_OLDSETOPTIONS:
+#endif
+	case PTRACE_SETOPTIONS:
+		ret = ptrace_setoptions(child, data);
+		break;
+	default:
+		break;
+	}
+
+	return ret;
+}