From: Ralf Baechle <ralf@linux-mips.org>
Date: Tue, 17 Jul 2012 17:43:58 +0000 (+0200)
Subject: MIPS: ptrace: Use tracehook helpers.
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=bc3d22c13e8b1ae0be016c67406787231f9e6548;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

MIPS: ptrace: Use tracehook helpers.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
---

diff --git a/arch/mips/kernel/ptrace.c b/arch/mips/kernel/ptrace.c
index 8ae1ebef8b71..7a5d7ac6b0d4 100644
--- a/arch/mips/kernel/ptrace.c
+++ b/arch/mips/kernel/ptrace.c
@@ -24,6 +24,7 @@
 #include <linux/smp.h>
 #include <linux/user.h>
 #include <linux/security.h>
+#include <linux/tracehook.h>
 #include <linux/audit.h>
 #include <linux/seccomp.h>
 
@@ -540,28 +541,9 @@ asmlinkage void syscall_trace_enter(struct pt_regs *regs)
 	/* do the secure computing check first */
 	secure_computing_strict(regs->regs[2]);
 
-	if (!(current->ptrace & PT_PTRACED))
-		goto out;
+	if (test_thread_flag(TIF_SYSCALL_TRACE))
+		ptrace_report_syscall(regs);
 
-	if (!test_thread_flag(TIF_SYSCALL_TRACE))
-		goto out;
-
-	/* The 0x80 provides a way for the tracing parent to distinguish
-	   between a syscall stop and SIGTRAP delivery */
-	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;
-	}
-
-out:
 	audit_syscall_entry(audit_arch(), regs->regs[2],
 			    regs->regs[4], regs->regs[5],
 			    regs->regs[6], regs->regs[7]);
@@ -582,26 +564,8 @@ asmlinkage void syscall_trace_leave(struct pt_regs *regs)
 
 	audit_syscall_exit(regs);
 
-	if (!(current->ptrace & PT_PTRACED))
-		return;
-
-	if (!test_thread_flag(TIF_SYSCALL_TRACE))
-		return;
-
-	/* The 0x80 provides a way for the tracing parent to distinguish
-	   between a syscall stop and SIGTRAP delivery */
-	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;
-	}
+	if (test_thread_flag(TIF_SYSCALL_TRACE))
+		tracehook_report_syscall_exit(regs, 0);
 
 	user_enter();
 }