X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=arch%2Fsparc%2Fkernel%2Fptrace.c;h=11cf8619dd8e9a5c86cccdac7fb31a9e79d395f6;hb=97bf2856c6014879bd04983a3e9dfcdac1e7fe85;hp=9aecfe256ca42125d495d66908c4f8fc4a2b370a;hpb=f7f1b0f1e2fbadeab12d24236000e778aa9b1ead;p=linux-2.6.git

diff --git a/arch/sparc/kernel/ptrace.c b/arch/sparc/kernel/ptrace.c
index 9aecfe256..11cf8619d 100644
--- a/arch/sparc/kernel/ptrace.c
+++ b/arch/sparc/kernel/ptrace.c
@@ -19,6 +19,7 @@
 #include <linux/smp_lock.h>
 #include <linux/security.h>
 #include <linux/signal.h>
+#include <linux/vs_base.h>
 
 #include <asm/pgtable.h>
 #include <asm/system.h>
@@ -75,7 +76,7 @@ static inline void read_sunos_user(struct pt_regs *regs, unsigned long offset,
 				   struct task_struct *tsk, long __user *addr)
 {
 	struct pt_regs *cregs = tsk->thread.kregs;
-	struct thread_info *t = tsk->thread_info;
+	struct thread_info *t = task_thread_info(tsk);
 	int v;
 	
 	if(offset >= 1024)
@@ -170,7 +171,7 @@ static inline void write_sunos_user(struct pt_regs *regs, unsigned long offset,
 				    struct task_struct *tsk)
 {
 	struct pt_regs *cregs = tsk->thread.kregs;
-	struct thread_info *t = tsk->thread_info;
+	struct thread_info *t = task_thread_info(tsk);
 	unsigned long value = regs->u_regs[UREG_I3];
 
 	if(offset >= 1024)
@@ -286,43 +287,23 @@ asmlinkage void do_ptrace(struct pt_regs *regs)
 			       s, (int) request, (int) pid, addr, data, addr2);
 	}
 #endif
-	if (request == PTRACE_TRACEME) {
-		int my_ret;
-
-		/* are we already being traced? */
-		if (current->ptrace & PT_PTRACED) {
-			pt_error_return(regs, EPERM);
-			goto out;
-		}
-		my_ret = security_ptrace(current->parent, current);
-		if (my_ret) {
-			pt_error_return(regs, -my_ret);
-			goto out;
-		}
 
-		/* set the ptrace bit in the process flags. */
-		current->ptrace |= PT_PTRACED;
-		pt_succ_return(regs, 0);
-		goto out;
-	}
-#ifndef ALLOW_INIT_TRACING
-	if (pid == 1) {
-		/* Can't dork with init. */
-		pt_error_return(regs, EPERM);
+	if (request == PTRACE_TRACEME) {
+		ret = ptrace_traceme();
+		if (ret < 0)
+			pt_error_return(regs, -ret);
+		else
+			pt_succ_return(regs, 0);
 		goto out;
 	}
-#endif
-	read_lock(&tasklist_lock);
-	child = find_task_by_pid(pid);
-	if (child)
-		get_task_struct(child);
-	read_unlock(&tasklist_lock);
 
-	if (!child) {
-		pt_error_return(regs, ESRCH);
+	child = ptrace_get_task_struct(pid);
+	if (IS_ERR(child)) {
+		ret = PTR_ERR(child);
+		pt_error_return(regs, -ret);
 		goto out;
 	}
-	if (!vx_check(vx_task_xid(child), VX_WATCH|VX_IDENT)) {
+	if (!vx_check(vx_task_xid(child), VS_WATCH_P|VS_IDENT)) {
 		pt_error_return(regs, ESRCH);
 		goto out_tsk;
 	}