include/uapi/asm-generic/ucontext.h: include signal.h and sigcontext.h

Fixes userspace compiler errors:

error: unknown type name ‘stack_t’
error: field ‘uc_mcontext’ has incomplete type
struct sigcontext uc_mcontext;
error: unknown type name ‘sigset_t’

Signed-off-by: Mikko Rapeli <redacted>
---
 include/uapi/asm-generic/ucontext.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/include/uapi/asm-generic/ucontext.h b/include/uapi/asm-generic/ucontext.h
index ad77343..31ece341 100644
--- a/include/uapi/asm-generic/ucontext.h
+++ b/include/uapi/asm-generic/ucontext.h

@@ -1,6 +1,9 @@
 #ifndef __ASM_GENERIC_UCONTEXT_H
 #define __ASM_GENERIC_UCONTEXT_H
 
+#include <asm-generic/signal.h>
+#include <asm/sigcontext.h>
+
 struct ucontext {
 	unsigned long	  uc_flags;
 	struct ucontext  *uc_link;

-- 
2.1.4

On Tuesday 17 February 2015 00:05:48 Mikko Rapeli wrote:

Including another asm-generic header here is a bad idea: it breaks
if an architecture overrides asm/signal.h with its own version
but wants to use the asm-generic/ucontext.h file.

It would be best to just use linux/signal.h here, which includes
the correct architecture specific files.

	Arnd

On Tue, Feb 17, 2015 at 10:10:42AM +0100, Arnd Bergmann wrote:

On Tuesday 17 February 2015 00:05:48 Mikko Rapeli wrote:

quoted

 #ifndef __ASM_GENERIC_UCONTEXT_H
 #define __ASM_GENERIC_UCONTEXT_H
 
+#include <asm-generic/signal.h>
+#include <asm/sigcontext.h>
+
 struct ucontext {

Including another asm-generic header here is a bad idea: it breaks
if an architecture overrides asm/signal.h with its own version
but wants to use the asm-generic/ucontext.h file.

It would be best to just use linux/signal.h here, which includes
the correct architecture specific files.

Thanks, I will use asm/signal.h instead.

-Mikko