[ 01/56] signal: Define __ARCH_HAS_SA_RESTORER so we know whether to clear sa_restorer

Greg Kroah-Hartman
2013-04-02T22:50:33Z

From: Ben Hutchings <ben@decadent.org.uk>

Vaguely based on upstream commit 574c4866e33d 'consolidate kernel-side
struct sigaction declarations'.

flush_signal_handlers() needs to know whether sigaction::sa_restorer
is defined, not whether SA_RESTORER is defined. Define the
__ARCH_HAS_SA_RESTORER macro to indicate this.

Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
arch/arm/include/asm/signal.h | 1 +
arch/avr32/include/asm/signal.h | 1 +
arch/cris/include/asm/signal.h | 1 +
arch/h8300/include/asm/signal.h | 1 +
arch/m32r/include/asm/signal.h | 1 +
arch/m68k/include/asm/signal.h | 1 +
arch/mn10300/include/asm/signal.h | 1 +
arch/powerpc/include/asm/signal.h | 1 +
arch/s390/include/asm/signal.h | 1 +
arch/sparc/include/asm/signal.h | 1 +
arch/x86/include/asm/signal.h | 2 ++
arch/xtensa/include/asm/signal.h | 1 +
include/asm-generic/signal.h | 4 ++++
13 files changed, 17 insertions(+)

--- a/arch/arm/include/asm/signal.h
+++ b/arch/arm/include/asm/signal.h
@@ -127,6 +127,7 @@ struct sigaction {
__sigrestore_t sa_restorer;
sigset_t sa_mask; /* mask last for extensibility */
};
+#define __ARCH_HAS_SA_RESTORER

struct k_sigaction {
struct sigaction sa;
--- a/arch/avr32/include/asm/signal.h
+++ b/arch/avr32/include/asm/signal.h
@@ -128,6 +128,7 @@ struct sigaction {
__sigrestore_t sa_restorer;
sigset_t sa_mask; /* mask last for extensibility */
};
+#define __ARCH_HAS_SA_RESTORER

struct k_sigaction {
struct sigaction sa;
--- a/arch/cris/include/asm/signal.h
+++ b/arch/cris/include/asm/signal.h
@@ -122,6 +122,7 @@ struct sigaction {
void (*sa_restorer)(void);
sigset_t sa_mask; /* mask last for extensibility */
};
+#define __ARCH_HAS_SA_RESTORER

struct k_sigaction {
struct sigaction sa;
--- a/arch/h8300/include/asm/signal.h
+++ b/arch/h8300/include/asm/signal.h
@@ -121,6 +121,7 @@ struct sigaction {
void (*sa_restorer)(void);
sigset_t sa_mask; /* mask last for extensibility */
};
+#define __ARCH_HAS_SA_RESTORER

struct k_sigaction {
struct sigaction sa;
--- a/arch/m32r/include/asm/signal.h
+++ b/arch/m32r/include/asm/signal.h
@@ -123,6 +123,7 @@ struct sigaction {
__sigrestore_t sa_restorer;
sigset_t sa_mask; /* mask last for extensibility */
};
+#define __ARCH_HAS_SA_RESTORER

struct k_sigaction {
struct sigaction sa;
--- a/arch/m68k/include/asm/signal.h
+++ b/arch/m68k/include/asm/signal.h
@@ -119,6 +119,7 @@ struct sigaction {
__sigrestore_t sa_restorer;
sigset_t sa_mask; /* mask last for extensibility */
};
+#define __ARCH_HAS_SA_RESTORER

struct k_sigaction {
struct sigaction sa;
--- a/arch/mn10300/include/asm/signal.h
+++ b/arch/mn10300/include/asm/signal.h
@@ -131,6 +131,7 @@ struct sigaction {
__sigrestore_t sa_restorer;
sigset_t sa_mask; /* mask last for extensibility */
};
+#define __ARCH_HAS_SA_RESTORER

struct k_sigaction {
struct sigaction sa;
--- a/arch/powerpc/include/asm/signal.h
+++ b/arch/powerpc/include/asm/signal.h
@@ -109,6 +109,7 @@ struct sigaction {
__sigrestore_t sa_restorer;
sigset_t sa_mask; /* mask last for extensibility */
};
+#define __ARCH_HAS_SA_RESTORER

struct k_sigaction {
struct sigaction sa;
--- a/arch/s390/include/asm/signal.h
+++ b/arch/s390/include/asm/signal.h
@@ -131,6 +131,7 @@ struct sigaction {
void (*sa_restorer)(void);
sigset_t sa_mask; /* mask last for extensibility */
};
+#define __ARCH_HAS_SA_RESTORER

struct k_sigaction {
struct sigaction sa;
--- a/arch/sparc/include/asm/signal.h
+++ b/arch/sparc/include/asm/signal.h
@@ -191,6 +191,7 @@ struct __old_sigaction {
unsigned long sa_flags;
void (*sa_restorer)(void); /* not used by Linux/SPARC yet */
};
+#define __ARCH_HAS_SA_RESTORER

typedef struct sigaltstack {
void __user *ss_sp;
--- a/arch/x86/include/asm/signal.h
+++ b/arch/x86/include/asm/signal.h
@@ -125,6 +125,8 @@ typedef unsigned long sigset_t;
extern void do_notify_resume(struct pt_regs *, void *, __u32);
# endif /* __KERNEL__ */

+#define __ARCH_HAS_SA_RESTORER
+
#ifdef __i386__
# ifdef __KERNEL__
struct old_sigaction {
--- a/arch/xtensa/include/asm/signal.h
+++ b/arch/xtensa/include/asm/signal.h
@@ -133,6 +133,7 @@ struct sigaction {
void (*sa_restorer)(void);
sigset_t sa_mask; /* mask last for extensibility */
};
+#define __ARCH_HAS_SA_RESTORER

struct k_sigaction {
struct sigaction sa;
--- a/include/asm-generic/signal.h
+++ b/include/asm-generic/signal.h
@@ -99,6 +99,10 @@ typedef unsigned long old_sigset_t;

#include <asm-generic/signal-defs.h>

+#ifdef SA_RESTORER
+#define __ARCH_HAS_SA_RESTORER
+#endif
+
struct sigaction {
__sighandler_t sa_handler;
unsigned long sa_flags;