syscalls/x86: auto-create compat_sys_*() prototypes

compat_sys_*() functions are no longer called from within the kernel on
x86 except from the system call table. Linking the system call does not
require compat_sys_*() function prototypes at least on x86. Therefore,
generate compat_sys_*() prototypes on-the-fly within the
COMPAT_SYSCALL_DEFINEx() macro, and remove x86-specific prototypes from
various header files.

Suggested-by: Andy Lutomirski <luto@kernel.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: David S. Miller <davem@davemloft.net>
Cc: netdev@vger.kernel.org
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: x86@kernel.org
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>

3 files changed, 1 insertions, 66 deletions

diff --git a/arch/x86/ia32/ia32_signal.c b/arch/x86/ia32/ia32_signal.c
index 41c6718..86b1341 100644
--- a/arch/x86/ia32/ia32_signal.c
+++ b/arch/x86/ia32/ia32_signal.c
@@ -33,7 +33,6 @@
 #include <asm/vdso.h>
 #include <asm/sigframe.h>
 #include <asm/sighandling.h>
-#include <asm/sys_ia32.h>
 #include <asm/smap.h>
 
 /*
diff --git a/arch/x86/ia32/sys_ia32.c b/arch/x86/ia32/sys_ia32.c
index bd8a702..11ef7b7 100644
--- a/arch/x86/ia32/sys_ia32.c
+++ b/arch/x86/ia32/sys_ia32.c
@@ -47,7 +47,7 @@
 #include <linux/uaccess.h>
 #include <linux/atomic.h>
 #include <asm/vgtod.h>
-#include <asm/sys_ia32.h>
+#include <asm/ia32.h>
 
 #define AA(__x)		((unsigned long)(__x))
 
diff --git a/arch/x86/include/asm/sys_ia32.h b/arch/x86/include/asm/sys_ia32.h
deleted file mode 100644
index 2ee6e3b..0000000
--- a/arch/x86/include/asm/sys_ia32.h
+++ /dev/null
@@ -1,64 +0,0 @@
-/*
- * sys_ia32.h - Linux ia32 syscall interfaces
- *
- * Copyright (c) 2008 Jaswinder Singh Rajput
- *
- * This file is released under the GPLv2.
- * See the file COPYING for more details.
- */
-
-#ifndef _ASM_X86_SYS_IA32_H
-#define _ASM_X86_SYS_IA32_H
-
-#ifdef CONFIG_COMPAT
-
-#include <linux/compiler.h>
-#include <linux/linkage.h>
-#include <linux/types.h>
-#include <linux/signal.h>
-#include <asm/compat.h>
-#include <asm/ia32.h>
-
-/* ia32/sys_ia32.c */
-asmlinkage long compat_sys_x86_truncate64(const char __user *, unsigned long,
-					  unsigned long);
-asmlinkage long compat_sys_x86_ftruncate64(unsigned int, unsigned long,
-					   unsigned long);
-
-asmlinkage long compat_sys_x86_stat64(const char __user *,
-				      struct stat64 __user *);
-asmlinkage long compat_sys_x86_lstat64(const char __user *,
-				       struct stat64 __user *);
-asmlinkage long compat_sys_x86_fstat64(unsigned int, struct stat64 __user *);
-asmlinkage long compat_sys_x86_fstatat(unsigned int, const char __user *,
-			      struct stat64 __user *, int);
-struct mmap_arg_struct32;
-asmlinkage long compat_sys_x86_mmap(struct mmap_arg_struct32 __user *);
-
-asmlinkage long compat_sys_x86_pread(unsigned int, char __user *, u32, u32,
-				     u32);
-asmlinkage long compat_sys_x86_pwrite(unsigned int, const char __user *, u32,
-				      u32, u32);
-
-asmlinkage long compat_sys_x86_fadvise64_64(int, __u32, __u32, __u32, __u32,
-					    int);
-
-asmlinkage ssize_t compat_sys_x86_readahead(int, unsigned int, unsigned int,
-					    size_t);
-asmlinkage long compat_sys_x86_sync_file_range(int, unsigned int, unsigned int,
-					       unsigned int, unsigned int,
-					       int);
-asmlinkage long compat_sys_x86_fadvise64(int, unsigned int, unsigned int,
-					 size_t, int);
-asmlinkage long compat_sys_x86_fallocate(int, int, unsigned int, unsigned int,
-					 unsigned int, unsigned int);
-asmlinkage long compat_sys_x86_clone(unsigned long, unsigned long, int __user *,
-				     unsigned long, int __user *);
-
-/* ia32/ia32_signal.c */
-asmlinkage long sys32_sigreturn(void);
-asmlinkage long sys32_rt_sigreturn(void);
-
-#endif /* CONFIG_COMPAT */
-
-#endif /* _ASM_X86_SYS_IA32_H */