Merge master.kernel.org:/pub/scm/linux/kernel/git/herbert/crypto-2.6

[linux-drm-fsl-dcu.git] / arch / um / kernel / tt / trap_user.c

diff --git a/arch/um/kernel/tt/trap_user.c b/arch/um/kernel/tt/trap_user.c
index fc108615beafbaf894f0fe3e4c2eb55338084030..3032eb5e2467a13ae7dca24868a0fc7d20b33506 100644 (file)
--- a/arch/um/kernel/tt/trap_user.c
+++ b/arch/um/kernel/tt/trap_user.c
@@ -1,4 +1,4 @@
-/* 
+/*
  * Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
  * Licensed under the GPL
  */
@@ -8,18 +8,17 @@
 #include <signal.h>
 #include "sysdep/ptrace.h"
 #include "sysdep/sigcontext.h"
-#include "signal_user.h"
-#include "user_util.h"
 #include "kern_util.h"
 #include "task.h"
 #include "tt.h"
+#include "os.h"
 
 void sig_handler_common_tt(int sig, void *sc_ptr)
 {
        struct sigcontext *sc = sc_ptr;
        struct tt_regs save_regs, *r;
-       struct signal_info *info;
-       int save_errno = errno, is_user;
+       int save_errno = errno, is_user = 0;
+       void (*handler)(int, union uml_pt_regs *);
 
        /* This is done because to allow SIGSEGV to be delivered inside a SEGV
         * handler.  This can happen in copy_user, and if SEGV is disabled,
@@ -35,15 +34,20 @@ void sig_handler_common_tt(int sig, void *sc_ptr)
                 GET_FAULTINFO_FROM_SC(r->faultinfo, sc);
         }
        save_regs = *r;
-       is_user = user_context(SC_SP(sc));
+       if (sc)
+               is_user = user_context(SC_SP(sc));
        r->sc = sc;
        if(sig != SIGUSR2) 
                r->syscall = -1;
 
-       info = &sig_info[sig];
-       if(!info->is_irq) unblock_signals();
+       handler = sig_info[sig];
+
+       /* unblock SIGALRM, SIGVTALRM, SIGIO if sig isn't IRQ signal */
+       if (sig != SIGIO && sig != SIGWINCH &&
+           sig != SIGVTALRM && sig != SIGALRM)
+               unblock_signals();
 
-       (*info->handler)(sig, (union uml_pt_regs *) r);
+       handler(sig, (union uml_pt_regs *) r);
 
        if(is_user){
                interrupt_end();