[PATCH,HURD] ptrace: use __hurd_fail for EOPNOTSUPP

[Pino Toscano <toscano dot pino at tiscali dot it>]

Hi,

attached there is a minor patch to fix the return values of 
unimplemented cases, i.e. using __hurd_fail to set EOPNOTSUPP properly.

Thanks,
-- 
Pino Toscano

Hurd: ptrace: use __hurd_fail for EOPNOTSUPP

2012-08-29  Pino Toscano  <toscano.pino@tiscali.it>

	* sysdeps/mach/hurd/ptrace.c (ptrace): Use __hurd_fail to return
	EOPNOTSUPP.
--- a/sysdeps/mach/hurd/ptrace.c
+++ b/sysdeps/mach/hurd/ptrace.c
@@ -160,7 +160,7 @@ ptrace (enum __ptrace_request request, .
     case PTRACE_SINGLESTEP:
       /* This is a machine-dependent kernel RPC on
 	 machines that support it.  Punt.  */
-      return EOPNOTSUPP;
+      return __hurd_fail (EOPNOTSUPP);
 
     case PTRACE_ATTACH:
     case PTRACE_DETACH:
@@ -227,7 +227,7 @@ ptrace (enum __ptrace_request request, .
     case PTRACE_PEEKUSER:
     case PTRACE_POKEUSER:
       /* U area, what's that?  */
-      return EOPNOTSUPP;
+      return __hurd_fail (EOPNOTSUPP);
 
     case PTRACE_GETREGS:
     case PTRACE_SETREGS:
@@ -248,7 +248,7 @@ ptrace (enum __ptrace_request request, .
       return get_regs (MACHINE_THREAD_FLOAT_STATE_FLAVOR,
 		       MACHINE_THREAD_FLOAT_STATE_COUNT);
 #else
-      return EOPNOTSUPP;
+      return __hurd_fail (EOPNOTSUPP);
 #endif
 
     case PTRACE_GETFPAREGS:
@@ -261,7 +261,7 @@ ptrace (enum __ptrace_request request, .
       return get_regs (MACHINE_THREAD_FPA_STATE_FLAVOR,
 		       MACHINE_THREAD_FPA_STATE_COUNT);
 #else
-      return EOPNOTSUPP;
+      return __hurd_fail (EOPNOTSUPP);
 #endif
 
     case PTRACE_POKETEXT:

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