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Fix breakage in MIPS siginfo handling 

MIPS's siginfo handling has been broken since this commit:

	commit 574c4866e3
	Author: Al Viro <viro@zeniv.linux.org.uk>
	Date:   Sun Nov 25 22:24:19 2012 -0500
	consolidate kernel-side struct sigaction declarations

for 64-bit BE MIPS CPUs.

The UAPI variant looks like this:

	struct sigaction {
		unsigned int	sa_flags;
		__sighandler_t	sa_handler;
		sigset_t	sa_mask;
	};

but the core kernel's variant looks like this:

	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;
	};

The problem is that sa_flags has been changed from an unsigned int to an
unsigned long.

Fix this by making sa_flags unsigned int if __ARCH_HAS_ODD_SIGACTION is
defined.

Whilst we're at it, rename __ARCH_HAS_ODD_SIGACTION to
__ARCH_HAS_IRIX_SIGACTION.

Signed-off-by: David Howells <dhowells@redhat.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Cc: stable@vger.kernel.org
Acked-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
David Howells 2013-03-19 14:00:53 +00:00 committed by Ralf Baechle
parent 1762c5ab7c
commit 2a1486981c
3 changed files with 5 additions and 5 deletions
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2
arch/mips/include/asm/signal.h
View File

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

4
include/linux/compat.h
View File

@ -141,11 +141,11 @@ typedef struct {
} compat_sigset_t; } compat_sigset_t;
struct compat_sigaction { struct compat_sigaction {
#ifndef __ARCH_HAS_ODD_SIGACTION #ifndef __ARCH_HAS_IRIX_SIGACTION
compat_uptr_t sa_handler; compat_uptr_t sa_handler;
compat_ulong_t sa_flags; compat_ulong_t sa_flags;
#else #else
compat_ulong_t sa_flags; compat_uint_t sa_flags;
compat_uptr_t sa_handler; compat_uptr_t sa_handler;
#endif #endif
#ifdef __ARCH_HAS_SA_RESTORER #ifdef __ARCH_HAS_SA_RESTORER

4
include/linux/signal.h
View File

@ -250,11 +250,11 @@ extern int show_unhandled_signals;
extern int sigsuspend(sigset_t *); extern int sigsuspend(sigset_t *);
struct sigaction { struct sigaction {
#ifndef __ARCH_HAS_ODD_SIGACTION #ifndef __ARCH_HAS_IRIX_SIGACTION
__sighandler_t sa_handler; __sighandler_t sa_handler;
unsigned long sa_flags; unsigned long sa_flags;
#else #else
unsigned long sa_flags; unsigned int sa_flags;
__sighandler_t sa_handler; __sighandler_t sa_handler;
#endif #endif
#ifdef __ARCH_HAS_SA_RESTORER #ifdef __ARCH_HAS_SA_RESTORER