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x86: tracehook syscall

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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>
This commit is contained in:
Roland McGrath 2008-03-16 23:36:28 -07:00
parent 36a033082b
commit eeea3c3ff8
1 changed files with 6 additions and 28 deletions
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34
arch/x86/kernel/ptrace.c
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@ -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 @@ void send_sigtrap(struct task_struct *tsk, struct pt_regs *regs, int error_code)
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 @@ asmregparm long syscall_trace_enter(struct pt_regs *regs)
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 @@ asmregparm void syscall_trace_leave(struct pt_regs *regs)
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 @@ asmregparm void syscall_trace_leave(struct pt_regs *regs)
* 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);
}