From 0473c9b5f05948df780bbc7b996dd7aefc4ec41d Mon Sep 17 00:00:00 2001 From: Heiko Carstens Date: Mon, 3 Mar 2014 10:44:03 +0100 Subject: compat: let architectures define __ARCH_WANT_COMPAT_SYS_GETDENTS64 For architecture dependent compat syscalls in common code an architecture must define something like __ARCH_WANT_ if it wants to use the code. This however is not true for compat_sys_getdents64 for which architectures must define __ARCH_OMIT_COMPAT_SYS_GETDENTS64 if they do not want the code. This leads to the situation where all architectures, except mips, get the compat code but only x86_64, arm64 and the generic syscall architectures actually use it. So invert the logic, so that architectures actively must do something to get the compat code. This way a couple of architectures get rid of otherwise dead code. Signed-off-by: Heiko Carstens --- arch/x86/include/asm/unistd.h | 1 + 1 file changed, 1 insertion(+) (limited to 'arch/x86/include/asm') diff --git a/arch/x86/include/asm/unistd.h b/arch/x86/include/asm/unistd.h index c2a4813..f4b5795 100644 --- a/arch/x86/include/asm/unistd.h +++ b/arch/x86/include/asm/unistd.h @@ -23,6 +23,7 @@ # include # include # define __ARCH_WANT_COMPAT_SYS_TIME +# define __ARCH_WANT_COMPAT_SYS_GETDENTS64 # endif -- cgit v1.1 From 378a10f3ae2e8a67ecc8f548c8e5ff25881bd88a Mon Sep 17 00:00:00 2001 From: Heiko Carstens Date: Wed, 5 Mar 2014 10:43:51 +0100 Subject: fs/compat: optional preadv64/pwrite64 compat system calls The preadv64/pwrite64 have been implemented for the x32 ABI, in order to allow passing 64 bit arguments from user space without splitting them into two 32 bit parameters, like it would be necessary for usual compat tasks. Howevert these two system calls are only being used for the x32 ABI, so add __ARCH_WANT_COMPAT defines for these two compat syscalls and make these two only visible for x86. Signed-off-by: Heiko Carstens --- arch/x86/include/asm/unistd.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'arch/x86/include/asm') diff --git a/arch/x86/include/asm/unistd.h b/arch/x86/include/asm/unistd.h index f4b5795..3f556c6 100644 --- a/arch/x86/include/asm/unistd.h +++ b/arch/x86/include/asm/unistd.h @@ -24,6 +24,8 @@ # include # define __ARCH_WANT_COMPAT_SYS_TIME # define __ARCH_WANT_COMPAT_SYS_GETDENTS64 +# define __ARCH_WANT_COMPAT_SYS_PREADV64 +# define __ARCH_WANT_COMPAT_SYS_PWRITEV64 # endif -- cgit v1.1