Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal

Pull compat cleanup from Al Viro:
 "Mostly about syscall wrappers this time; there will be another pile
  with patches in the same general area from various people, but I'd
  rather push those after both that and vfs.git pile are in."

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal:
  syscalls.h: slightly reduce the jungles of macros
  get rid of union semop in sys_semctl(2) arguments
  make do_mremap() static
  sparc: no need to sign-extend in sync_file_range() wrapper
  ppc compat wrappers for add_key(2) and request_key(2) are pointless
  x86: trim sys_ia32.h
  x86: sys32_kill and sys32_mprotect are pointless
  get rid of compat_sys_semctl() and friends in case of ARCH_WANT_OLD_COMPAT_IPC
  merge compat sys_ipc instances
  consolidate compat lookup_dcookie()
  convert vmsplice to COMPAT_SYSCALL_DEFINE
  switch getrusage() to COMPAT_SYSCALL_DEFINE
  switch epoll_pwait to COMPAT_SYSCALL_DEFINE
  convert sendfile{,64} to COMPAT_SYSCALL_DEFINE
  switch signalfd{,4}() to COMPAT_SYSCALL_DEFINE
  make SYSCALL_DEFINE<n>-generated wrappers do asmlinkage_protect
  make HAVE_SYSCALL_WRAPPERS unconditional
  consolidate cond_syscall and SYSCALL_ALIAS declarations
  teach SYSCALL_DEFINE<n> how to deal with long long/unsigned long long
  get rid of duplicate logics in __SC_....[1-6] definitions

1 files changed, 15 insertions, 36 deletions

diff --git a/include/linux/compat.h b/include/linux/compat.h
index 377cd8c3395e..d53c35352ea9 100644
--- a/include/linux/compat.h
+++ b/include/linux/compat.h
@@ -27,12 +27,6 @@
 #define __SC_DELOUSE(t,v) ((t)(unsigned long)(v))
 #endif
 
-#define __SC_CCAST1(t1, a1)      __SC_DELOUSE(t1,a1)
-#define __SC_CCAST2(t2, a2, ...) __SC_DELOUSE(t2,a2), __SC_CCAST1(__VA_ARGS__)
-#define __SC_CCAST3(t3, a3, ...) __SC_DELOUSE(t3,a3), __SC_CCAST2(__VA_ARGS__)
-#define __SC_CCAST4(t4, a4, ...) __SC_DELOUSE(t4,a4), __SC_CCAST3(__VA_ARGS__)
-#define __SC_CCAST5(t5, a5, ...) __SC_DELOUSE(t5,a5), __SC_CCAST4(__VA_ARGS__)
-#define __SC_CCAST6(t6, a6, ...) __SC_DELOUSE(t6,a6), __SC_CCAST5(__VA_ARGS__)
 #define COMPAT_SYSCALL_DEFINE1(name, ...) \
         COMPAT_SYSCALL_DEFINEx(1, _##name, __VA_ARGS__)
 #define COMPAT_SYSCALL_DEFINE2(name, ...) \
@@ -46,24 +40,15 @@
 #define COMPAT_SYSCALL_DEFINE6(name, ...) \
 	COMPAT_SYSCALL_DEFINEx(6, _##name, __VA_ARGS__)
 
-#ifdef CONFIG_HAVE_SYSCALL_WRAPPERS
-
 #define COMPAT_SYSCALL_DEFINEx(x, name, ...)				\
-	asmlinkage long compat_sys##name(__SC_DECL##x(__VA_ARGS__));	\
-	static inline long C_SYSC##name(__SC_DECL##x(__VA_ARGS__));	\
-	asmlinkage long compat_SyS##name(__SC_LONG##x(__VA_ARGS__))	\
+	asmlinkage long compat_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__));\
+	static inline long C_SYSC##name(__MAP(x,__SC_DECL,__VA_ARGS__));\
+	asmlinkage long compat_SyS##name(__MAP(x,__SC_LONG,__VA_ARGS__))\
 	{								\
-		return (long) C_SYSC##name(__SC_CCAST##x(__VA_ARGS__));	\
+		return C_SYSC##name(__MAP(x,__SC_DELOUSE,__VA_ARGS__));	\
 	}								\
 	SYSCALL_ALIAS(compat_sys##name, compat_SyS##name);		\
-	static inline long C_SYSC##name(__SC_DECL##x(__VA_ARGS__))
-
-#else /* CONFIG_HAVE_SYSCALL_WRAPPERS */
-
-#define COMPAT_SYSCALL_DEFINEx(x, name, ...)				\
-	asmlinkage long compat_sys##name(__SC_DECL##x(__VA_ARGS__))
-
-#endif /* CONFIG_HAVE_SYSCALL_WRAPPERS */
+	static inline long C_SYSC##name(__MAP(x,__SC_DECL,__VA_ARGS__))
 
 #ifndef compat_user_stack_pointer
 #define compat_user_stack_pointer() current_user_stack_pointer()
@@ -326,21 +311,13 @@ asmlinkage long
 compat_sys_get_robust_list(int pid, compat_uptr_t __user *head_ptr,
 			   compat_size_t __user *len_ptr);
 
-#ifdef CONFIG_ARCH_WANT_OLD_COMPAT_IPC
-long compat_sys_semctl(int first, int second, int third, void __user *uptr);
-long compat_sys_msgsnd(int first, int second, int third, void __user *uptr);
-long compat_sys_msgrcv(int first, int second, int msgtyp, int third,
-		int version, void __user *uptr);
-long compat_sys_shmat(int first, int second, compat_uptr_t third, int version,
-		void __user *uptr);
-#else
-long compat_sys_semctl(int semid, int semnum, int cmd, int arg);
-long compat_sys_msgsnd(int msqid, struct compat_msgbuf __user *msgp,
+asmlinkage long compat_sys_ipc(u32, int, int, u32, compat_uptr_t, u32);
+asmlinkage long compat_sys_shmat(int shmid, compat_uptr_t shmaddr, int shmflg);
+asmlinkage long compat_sys_semctl(int semid, int semnum, int cmd, int arg);
+asmlinkage long compat_sys_msgsnd(int msqid, compat_uptr_t msgp,
 		compat_ssize_t msgsz, int msgflg);
-long compat_sys_msgrcv(int msqid, struct compat_msgbuf __user *msgp,
+asmlinkage long compat_sys_msgrcv(int msqid, compat_uptr_t msgp,
 		compat_ssize_t msgsz, long msgtyp, int msgflg);
-long compat_sys_shmat(int shmid, compat_uptr_t shmaddr, int shmflg);
-#endif
 long compat_sys_msgctl(int first, int second, void __user *uptr);
 long compat_sys_shmctl(int first, int second, void __user *uptr);
 long compat_sys_semtimedop(int semid, struct sembuf __user *tsems,
@@ -444,13 +421,13 @@ extern long compat_arch_ptrace(struct task_struct *child, compat_long_t request,
 asmlinkage long compat_sys_ptrace(compat_long_t request, compat_long_t pid,
 				  compat_long_t addr, compat_long_t data);
 
+asmlinkage long compat_sys_lookup_dcookie(u32, u32, char __user *, size_t);
 /*
  * epoll (fs/eventpoll.c) compat bits follow ...
  */
-struct epoll_event;
-#define compat_epoll_event	epoll_event
+struct epoll_event;	/* fortunately, this one is fixed-layout */
 asmlinkage long compat_sys_epoll_pwait(int epfd,
-			struct compat_epoll_event __user *events,
+			struct epoll_event __user *events,
 			int maxevents, int timeout,
 			const compat_sigset_t __user *sigmask,
 			compat_size_t sigsetsize);
@@ -685,6 +662,8 @@ asmlinkage ssize_t compat_sys_process_vm_writev(compat_pid_t pid,
 
 asmlinkage long compat_sys_sendfile(int out_fd, int in_fd,
 				    compat_off_t __user *offset, compat_size_t count);
+asmlinkage long compat_sys_sendfile64(int out_fd, int in_fd,
+				    compat_loff_t __user *offset, compat_size_t count);
 asmlinkage long compat_sys_sigaltstack(const compat_stack_t __user *uss_ptr,
 				       compat_stack_t __user *uoss_ptr);