consolidate kernel-side struct sigaction declarations

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

arch/alpha/include/asm/signal.h

@@ -22,12 +22,6 @@ struct osf_sigaction {
 	int		sa_flags;
 };
 
-struct sigaction {
-	__sighandler_t	sa_handler;
-	unsigned long	sa_flags;
-	sigset_t	sa_mask;	/* mask last for extensibility */
-};
-
 #define __ARCH_HAS_KA_RESTORER
 #include <asm/sigcontext.h>
 #endif

arch/arm/include/asm/signal.h

@@ -23,12 +23,7 @@ struct old_sigaction {
 	__sigrestore_t sa_restorer;
 };
 
-struct sigaction {
-	__sighandler_t sa_handler;
-	unsigned long sa_flags;
-	__sigrestore_t sa_restorer;
-	sigset_t sa_mask;		/* mask last for extensibility */
-};
+#define __ARCH_HAS_SA_RESTORER
 
 #include <asm/sigcontext.h>
 #endif

arch/avr32/include/asm/signal.h

@@ -23,12 +23,7 @@ typedef struct {
 	unsigned long sig[_NSIG_WORDS];
 } sigset_t;
 
-struct sigaction {
-	__sighandler_t sa_handler;
-	unsigned long sa_flags;
-	__sigrestore_t sa_restorer;
-	sigset_t sa_mask;		/* mask last for extensibility */
-};
+#define __ARCH_HAS_SA_RESTORER
 
 #include <asm/sigcontext.h>
 #undef __HAVE_ARCH_SIG_BITOPS

arch/cris/include/asm/signal.h

@@ -23,12 +23,7 @@ struct old_sigaction {
 	void (*sa_restorer)(void);
 };
 
-struct sigaction {
-	__sighandler_t sa_handler;
-	unsigned long sa_flags;
-	void (*sa_restorer)(void);
-	sigset_t sa_mask;		/* mask last for extensibility */
-};
+#define __ARCH_HAS_SA_RESTORER
 
 #include <asm/sigcontext.h>
 

arch/h8300/include/asm/signal.h

@@ -23,12 +23,7 @@ struct old_sigaction {
 	void (*sa_restorer)(void);
 };
 
-struct sigaction {
-	__sighandler_t sa_handler;
-	unsigned long sa_flags;
-	void (*sa_restorer)(void);
-	sigset_t sa_mask;		/* mask last for extensibility */
-};
+#define __ARCH_HAS_SA_RESTORER
 
 #include <asm/sigcontext.h>
 #undef __HAVE_ARCH_SIG_BITOPS

arch/ia64/include/asm/signal.h

@@ -26,12 +26,6 @@ typedef struct {
 	unsigned long sig[_NSIG_WORDS];
 } sigset_t;
 
-struct sigaction {
-	__sighandler_t sa_handler;
-	unsigned long sa_flags;
-	sigset_t sa_mask;		/* mask last for extensibility */
-};
-
 #  include <asm/sigcontext.h>
 
 # endif /* !__ASSEMBLY__ */

arch/ia64/include/asm/unistd.h

@@ -47,7 +47,6 @@ asmlinkage unsigned long sys_mmap2(
 				int prot, int flags,
 				int fd, long pgoff);
 struct pt_regs;
-struct sigaction;
 asmlinkage long sys_ia64_pipe(void);
 
 /*

arch/m32r/include/asm/signal.h

@@ -16,13 +16,7 @@ typedef struct {
 	unsigned long sig[_NSIG_WORDS];
 } sigset_t;
 
-struct sigaction {
-	__sighandler_t sa_handler;
-	unsigned long sa_flags;
-	__sigrestore_t sa_restorer;
-	sigset_t sa_mask;		/* mask last for extensibility */
-};
-
+#define __ARCH_HAS_SA_RESTORER
 #include <asm/sigcontext.h>
 
 #undef __HAVE_ARCH_SIG_BITOPS

arch/m68k/include/asm/signal.h

@@ -23,12 +23,7 @@ struct old_sigaction {
 	__sigrestore_t sa_restorer;
 };
 
-struct sigaction {
-	__sighandler_t sa_handler;
-	unsigned long sa_flags;
-	__sigrestore_t sa_restorer;
-	sigset_t sa_mask;		/* mask last for extensibility */
-};
+#define __ARCH_HAS_SA_RESTORER
 
 #include <asm/sigcontext.h>
 

arch/mips/include/asm/signal.h

@@ -21,4 +21,6 @@
 #include <asm/sigcontext.h>
 #include <asm/siginfo.h>
 
+#define __ARCH_HAS_ODD_SIGACTION
+
 #endif /* _ASM_SIGNAL_H */

arch/mips/include/uapi/asm/signal.h

@@ -96,11 +96,13 @@ typedef unsigned long old_sigset_t;		/* at least 32 bits */
 
 #include <asm-generic/signal-defs.h>
 
+#ifndef __KERNEL__
 struct sigaction {
 	unsigned int	sa_flags;
 	__sighandler_t	sa_handler;
 	sigset_t	sa_mask;
 };
+#endif
 
 /* IRIX compatible stack_t  */
 typedef struct sigaltstack {

arch/mn10300/include/asm/signal.h

@@ -33,12 +33,7 @@ struct old_sigaction {
 	__sigrestore_t sa_restorer;
 };
 
-struct sigaction {
-	__sighandler_t sa_handler;
-	unsigned long sa_flags;
-	__sigrestore_t sa_restorer;
-	sigset_t sa_mask;		/* mask last for extensibility */
-};
+#define __ARCH_HAS_SA_RESTORER
 
 #include <asm/sigcontext.h>
 

arch/parisc/include/asm/signal.h

@@ -24,11 +24,13 @@ typedef struct {
 	unsigned long sig[_NSIG_WORDS];
 } sigset_t;
 
+#ifndef __KERNEL__
 struct sigaction {
 	__sighandler_t sa_handler;
 	unsigned long sa_flags;
 	sigset_t sa_mask;		/* mask last for extensibility */
 };
+#endif
 
 #include <asm/sigcontext.h>
 

arch/powerpc/include/asm/signal.h

@@ -1,6 +1,7 @@
 #ifndef _ASM_POWERPC_SIGNAL_H
 #define _ASM_POWERPC_SIGNAL_H
 
+#define __ARCH_HAS_SA_RESTORER
 #include <uapi/asm/signal.h>
 
 #endif /* _ASM_POWERPC_SIGNAL_H */

arch/powerpc/include/asm/syscalls.h

@@ -9,7 +9,6 @@
 
 struct pt_regs;
 struct rtas_args;
-struct sigaction;
 
 asmlinkage unsigned long sys_mmap(unsigned long addr, size_t len,
 		unsigned long prot, unsigned long flags,

arch/powerpc/include/uapi/asm/signal.h

@@ -97,12 +97,14 @@ struct old_sigaction {
 	__sigrestore_t sa_restorer;
 };
 
+#ifndef __KERNEL__
 struct sigaction {
 	__sighandler_t sa_handler;
 	unsigned long sa_flags;
 	__sigrestore_t sa_restorer;
 	sigset_t sa_mask;		/* mask last for extensibility */
 };
+#endif
 
 typedef struct sigaltstack {
 	void __user *ss_sp;

arch/s390/include/asm/signal.h

@@ -28,11 +28,5 @@ struct old_sigaction {
         void (*sa_restorer)(void);
 };
 
-struct sigaction {
-        __sighandler_t sa_handler;
-        unsigned long sa_flags;
-        void (*sa_restorer)(void);
-        sigset_t sa_mask;               /* mask last for extensibility */
-};
-
+#define __ARCH_HAS_SA_RESTORER
 #endif

arch/sparc/include/asm/signal.h

@@ -22,6 +22,7 @@
 #define SA_STATIC_ALLOC         0x8000
 
 #define __ARCH_HAS_KA_RESTORER
+#define __ARCH_HAS_SA_RESTORER
 
 #endif /* !(__ASSEMBLY__) */
 #endif /* !(__SPARC_SIGNAL_H) */

arch/sparc/include/uapi/asm/signal.h

@@ -153,12 +153,14 @@ struct sigstack {
 
 #include <asm-generic/signal-defs.h>
 
+#ifndef __KERNEL__
 struct __new_sigaction {
 	__sighandler_t		sa_handler;
 	unsigned long		sa_flags;
 	__sigrestore_t		sa_restorer;  /* not used by Linux/SPARC yet */
 	__new_sigset_t		sa_mask;
 };
+#endif
 
 struct __old_sigaction {
 	__sighandler_t		sa_handler;

arch/sparc/kernel/systbls.h

@@ -3,8 +3,8 @@
 
 #include <linux/kernel.h>
 #include <linux/types.h>
+#include <linux/signal.h>
 #include <asm/utrap.h>
-#include <asm/signal.h>
 
 extern asmlinkage unsigned long sys_getpagesize(void);
 extern asmlinkage long sparc_pipe(struct pt_regs *regs);

arch/x86/include/asm/signal.h

@@ -31,6 +31,9 @@ typedef sigset_t compat_sigset_t;
 #include <uapi/asm/signal.h>
 #ifndef __ASSEMBLY__
 extern void do_notify_resume(struct pt_regs *, void *, __u32);
+
+#define __ARCH_HAS_SA_RESTORER
+
 #ifdef __i386__
 struct old_sigaction {
 	__sighandler_t sa_handler;
@@ -39,13 +42,6 @@ struct old_sigaction {
 	__sigrestore_t sa_restorer;
 };
 
-struct sigaction {
-	__sighandler_t sa_handler;
-	unsigned long sa_flags;
-	__sigrestore_t sa_restorer;
-	sigset_t sa_mask;		/* mask last for extensibility */
-};
-
 #endif /* !__i386__ */
 #include <asm/sigcontext.h>
 

arch/x86/include/uapi/asm/signal.h

@@ -95,9 +95,9 @@ typedef unsigned long sigset_t;
 #ifndef __ASSEMBLY__
 
 
-#ifdef __i386__
 # ifndef __KERNEL__
 /* Here we must cater to libcs that poke about in kernel headers.  */
+#ifdef __i386__
 
 struct sigaction {
 	union {
@@ -112,7 +112,6 @@ struct sigaction {
 #define sa_handler	_u._sa_handler
 #define sa_sigaction	_u._sa_sigaction
 
-# endif /* ! __KERNEL__ */
 #else /* __i386__ */
 
 struct sigaction {
@@ -123,6 +122,7 @@ struct sigaction {
 };
 
 #endif /* !__i386__ */
+# endif /* ! __KERNEL__ */
 
 typedef struct sigaltstack {
 	void __user *ss_sp;

arch/xtensa/include/asm/signal.h

@@ -15,12 +15,7 @@
 #include <uapi/asm/signal.h>
 
 #ifndef __ASSEMBLY__
-struct sigaction {
-	__sighandler_t sa_handler;
-	unsigned long sa_flags;
-	void (*sa_restorer)(void);
-	sigset_t sa_mask;		/* mask last for extensibility */
-};
+#define __ARCH_HAS_SA_RESTORER
 
 #include <asm/sigcontext.h>
 

include/linux/signal.h

@@ -249,6 +249,20 @@ extern void __set_current_blocked(const sigset_t *);
 extern int show_unhandled_signals;
 extern int sigsuspend(sigset_t *);
 
+struct sigaction {
+#ifndef __ARCH_HAS_ODD_SIGACTION
+	__sighandler_t	sa_handler;
+	unsigned long	sa_flags;
+#else
+	unsigned long	sa_flags;
+	__sighandler_t	sa_handler;
+#endif
+#ifdef __ARCH_HAS_SA_RESTORER
+	__sigrestore_t sa_restorer;
+#endif
+	sigset_t	sa_mask;	/* mask last for extensibility */
+};
+
 struct k_sigaction {
 	struct sigaction sa;
 #ifdef __ARCH_HAS_KA_RESTORER

include/linux/syscalls.h

@@ -68,11 +68,11 @@ struct sigaltstack;
 #include <linux/types.h>
 #include <linux/aio_abi.h>
 #include <linux/capability.h>
+#include <linux/signal.h>
 #include <linux/list.h>
 #include <linux/bug.h>
 #include <linux/sem.h>
 #include <asm/siginfo.h>
-#include <asm/signal.h>
 #include <linux/unistd.h>
 #include <linux/quota.h>
 #include <linux/key.h>

include/uapi/asm-generic/signal.h

@@ -93,6 +93,11 @@ typedef unsigned long old_sigset_t;
 
 #include <asm-generic/signal-defs.h>
 
+#ifdef SA_RESTORER
+#define __ARCH_HAS_SA_RESTORER
+#endif
+
+#ifndef __KERNEL__
 struct sigaction {
 	__sighandler_t sa_handler;
 	unsigned long sa_flags;
@@ -101,6 +106,7 @@ struct sigaction {
 #endif
 	sigset_t sa_mask;		/* mask last for extensibility */
 };
+#endif
 
 typedef struct sigaltstack {
 	void __user *ss_sp;