X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=arch%2Fsh%2Fkernel%2Fptrace.c;h=f7eebbde329184808d7a4dfe955fb6756128f582;hb=16c70f8c1b54b61c3b951b6fb220df250fe09b32;hp=a55dda62e0d8eb47e2c915e776e0588e7d98ac20;hpb=f7f1b0f1e2fbadeab12d24236000e778aa9b1ead;p=linux-2.6.git

diff --git a/arch/sh/kernel/ptrace.c b/arch/sh/kernel/ptrace.c
index a55dda62e..f7eebbde3 100644
--- a/arch/sh/kernel/ptrace.c
+++ b/arch/sh/kernel/ptrace.c
@@ -9,7 +9,6 @@
  *
  */
 
-#include <linux/config.h>
 #include <linux/kernel.h>
 #include <linux/sched.h>
 #include <linux/mm.h>
@@ -41,12 +40,7 @@ static inline int get_stack_long(struct task_struct *task, int offset)
 {
 	unsigned char *stack;
 
-	stack = (unsigned char *)
-		task->thread_info + THREAD_SIZE	- sizeof(struct pt_regs)
-#ifdef CONFIG_SH_DSP
-		- sizeof(struct pt_dspregs)
-#endif
-		- sizeof(unsigned long);
+	stack = (unsigned char *)task_pt_regs(task);
 	stack += offset;
 	return (*((int *)stack));
 }
@@ -59,12 +53,7 @@ static inline int put_stack_long(struct task_struct *task, int offset,
 {
 	unsigned char *stack;
 
-	stack = (unsigned char *)
-		task->thread_info + THREAD_SIZE - sizeof(struct pt_regs)
-#ifdef CONFIG_SH_DSP
-		- sizeof(struct pt_dspregs)
-#endif
-		- sizeof(unsigned long);
+	stack = (unsigned char *)task_pt_regs(task);
 	stack += offset;
 	*(unsigned long *) stack = data;
 	return 0;
@@ -80,50 +69,11 @@ void ptrace_disable(struct task_struct *child)
 	/* nothing to do.. */
 }
 
-asmlinkage int sys_ptrace(long request, long pid, long addr, long data)
+long arch_ptrace(struct task_struct *child, long request, long addr, long data)
 {
-	struct task_struct *child;
 	struct user * dummy = NULL;
 	int ret;
 
-	lock_kernel();
-	ret = -EPERM;
-	if (request == PTRACE_TRACEME) {
-		/* are we already being traced? */
-		if (current->ptrace & PT_PTRACED)
-			goto out;
-		ret = security_ptrace(current->parent, current);
-		if (ret)
-			goto out;
-		/* set the ptrace bit in the process flags. */
-		current->ptrace |= PT_PTRACED;
-		ret = 0;
-		goto out;
-	}
-	ret = -ESRCH;
-	read_lock(&tasklist_lock);
-	child = find_task_by_pid(pid);
-	if (child)
-		get_task_struct(child);
-	read_unlock(&tasklist_lock);
-	if (!child)
-		goto out;
-	if (!vx_check(vx_task_xid(child), VX_WATCH|VX_IDENT))
-		goto out_tsk;
-
-	ret = -EPERM;
-	if (pid == 1)		/* you may not mess with init */
-		goto out_tsk;
-
-	if (request == PTRACE_ATTACH) {
-		ret = ptrace_attach(child);
-		goto out_tsk;
-	}
-
-	ret = ptrace_check_attach(child, request == PTRACE_KILL);
-	if (ret < 0)
-		goto out_tsk;
-
 	switch (request) {
 	/* when I and D space are separate, these will need to be fixed. */
 	case PTRACE_PEEKTEXT: /* read word at location addr. */ 
@@ -291,10 +241,7 @@ asmlinkage int sys_ptrace(long request, long pid, long addr, long data)
 		ret = ptrace_request(child, request, addr, data);
 		break;
 	}
-out_tsk:
-	put_task_struct(child);
-out:
-	unlock_kernel();
+
 	return ret;
 }