1 files changed, 8 insertions, 87 deletions

diff --git a/arch/x86/kernel/ptrace.c b/arch/x86/kernel/ptrace.c
index 559c1b027417..fb03ef380f0e 100644
--- a/arch/x86/kernel/ptrace.c
+++ b/arch/x86/kernel/ptrace.c
@@ -1207,97 +1207,16 @@ static int genregs32_set(struct task_struct *target,
         return ret;
 }
 
-static long ptrace32_siginfo(unsigned request, u32 pid, u32 addr, u32 data)
+long compat_arch_ptrace(struct task_struct *child, compat_long_t request,
+                        compat_ulong_t caddr, compat_ulong_t cdata)
 {
-        siginfo_t __user *si = compat_alloc_user_space(sizeof(siginfo_t));
-        compat_siginfo_t __user *si32 = compat_ptr(data);
-        siginfo_t ssi;
-        int ret;
-
-        if (request == PTRACE_SETSIGINFO) {
-                memset(&ssi, 0, sizeof(siginfo_t));
-                ret = copy_siginfo_from_user32(&ssi, si32);
-                if (ret)
-                        return ret;
-                if (copy_to_user(si, &ssi, sizeof(siginfo_t)))
-                        return -EFAULT;
-        }
-        ret = sys_ptrace(request, pid, addr, (unsigned long)si);
-        if (ret)
-                return ret;
-        if (request == PTRACE_GETSIGINFO) {
-                if (copy_from_user(&ssi, si, sizeof(siginfo_t)))
-                        return -EFAULT;
-                ret = copy_siginfo_to_user32(si32, &ssi);
-        }
-        return ret;
-}
-
-asmlinkage long sys32_ptrace(long request, u32 pid, u32 addr, u32 data)
-{
-        struct task_struct *child;
-        struct pt_regs *childregs;
+        unsigned long addr = caddr;
+        unsigned long data = cdata;
         void __user *datap = compat_ptr(data);
         int ret;
         __u32 val;
 
         switch (request) {
-        case PTRACE_TRACEME:
-        case PTRACE_ATTACH:
-        case PTRACE_KILL:
-        case PTRACE_CONT:
-        case PTRACE_SINGLESTEP:
-        case PTRACE_SINGLEBLOCK:
-        case PTRACE_DETACH:
-        case PTRACE_SYSCALL:
-        case PTRACE_OLDSETOPTIONS:
-        case PTRACE_SETOPTIONS:
-        case PTRACE_SET_THREAD_AREA:
-        case PTRACE_GET_THREAD_AREA:
-#ifdef X86_BTS
-        case PTRACE_BTS_CONFIG:
-        case PTRACE_BTS_STATUS:
-        case PTRACE_BTS_SIZE:
-        case PTRACE_BTS_GET:
-        case PTRACE_BTS_CLEAR:
-        case PTRACE_BTS_DRAIN:
-#endif
-                return sys_ptrace(request, pid, addr, data);
-
-        default:
-                return -EINVAL;
-
-        case PTRACE_PEEKTEXT:
-        case PTRACE_PEEKDATA:
-        case PTRACE_POKEDATA:
-        case PTRACE_POKETEXT:
-        case PTRACE_POKEUSR:
-        case PTRACE_PEEKUSR:
-        case PTRACE_GETREGS:
-        case PTRACE_SETREGS:
-        case PTRACE_SETFPREGS:
-        case PTRACE_GETFPREGS:
-        case PTRACE_SETFPXREGS:
-        case PTRACE_GETFPXREGS:
-        case PTRACE_GETEVENTMSG:
-                break;
-
-        case PTRACE_SETSIGINFO:
-        case PTRACE_GETSIGINFO:
-                return ptrace32_siginfo(request, pid, addr, data);
-        }
-
-        child = ptrace_get_task_struct(pid);
-        if (IS_ERR(child))
-                return PTR_ERR(child);
-
-        ret = ptrace_check_attach(child, request == PTRACE_KILL);
-        if (ret < 0)
-                goto out;
-
-        childregs = task_pt_regs(child);
-
-        switch (request) {
         case PTRACE_PEEKUSR:
                 ret = getreg32(child, addr, &val);
                 if (ret == 0)
@@ -1343,12 +1262,14 @@ asmlinkage long sys32_ptrace(long request, u32 pid, u32 addr, u32 data)
                                              sizeof(struct user32_fxsr_struct),
                                              datap);
 
+        case PTRACE_GET_THREAD_AREA:
+        case PTRACE_SET_THREAD_AREA:
+                return arch_ptrace(child, request, addr, data);
+
         default:
                 return compat_ptrace_request(child, request, addr, data);
         }
 
- out:
-        put_task_struct(child);
         return ret;
 }