x86: tracehook syscall
This changes x86 syscall tracing to use the new tracehook.h entry points.
There is no change, only cleanup.
Signed-off-by: Roland McGrath <roland@redhat.com>
diff --git a/arch/x86/kernel/ptrace.c b/arch/x86/kernel/ptrace.c
index e37dccc..19a7d2c 100644
--- a/arch/x86/kernel/ptrace.c
+++ b/arch/x86/kernel/ptrace.c
@@ -14,6 +14,7 @@
#include <linux/errno.h>
#include <linux/ptrace.h>
#include <linux/regset.h>
+#include <linux/tracehook.h>
#include <linux/user.h>
#include <linux/elf.h>
#include <linux/security.h>
@@ -1375,30 +1376,6 @@
force_sig_info(SIGTRAP, &info, tsk);
}
-static void syscall_trace(struct pt_regs *regs)
-{
- if (!(current->ptrace & PT_PTRACED))
- return;
-
-#if 0
- printk("trace %s ip %lx sp %lx ax %d origrax %d caller %lx tiflags %x ptrace %x\n",
- current->comm,
- regs->ip, regs->sp, regs->ax, regs->orig_ax, __builtin_return_address(0),
- current_thread_info()->flags, current->ptrace);
-#endif
-
- 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;
- }
-}
#ifdef CONFIG_X86_32
# define IS_IA32 1
@@ -1432,8 +1409,9 @@
if (unlikely(test_thread_flag(TIF_SYSCALL_EMU)))
ret = -1L;
- if (ret || test_thread_flag(TIF_SYSCALL_TRACE))
- syscall_trace(regs);
+ if ((ret || test_thread_flag(TIF_SYSCALL_TRACE)) &&
+ tracehook_report_syscall_entry(regs))
+ ret = -1L;
if (unlikely(current->audit_context)) {
if (IS_IA32)
@@ -1459,7 +1437,7 @@
audit_syscall_exit(AUDITSC_RESULT(regs->ax), regs->ax);
if (test_thread_flag(TIF_SYSCALL_TRACE))
- syscall_trace(regs);
+ tracehook_report_syscall_exit(regs, 0);
/*
* If TIF_SYSCALL_EMU is set, we only get here because of
@@ -1475,6 +1453,6 @@
* system call instruction.
*/
if (test_thread_flag(TIF_SINGLESTEP) &&
- (current->ptrace & PT_PTRACED))
+ tracehook_consider_fatal_signal(current, SIGTRAP, SIG_DFL))
send_sigtrap(current, regs, 0);
}