teach SYSCALL_DEFINE<n> how to deal with long long/unsigned long long

... and convert a bunch of SYSCALL_DEFINE ones to SYSCALL_DEFINE<n>,
killing the boilerplate crap around them.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

arch/s390/kernel/sys_s390.c

@@ -132,19 +132,9 @@ SYSCALL_DEFINE1(s390_fadvise64_64, struct fadvise64_64_args __user *, args)
  * to
  *   %r2: fd, %r3: mode, %r4/%r5: offset, 96(%r15)-103(%r15): len
  */
-SYSCALL_DEFINE(s390_fallocate)(int fd, int mode, loff_t offset,
-			       u32 len_high, u32 len_low)
+SYSCALL_DEFINE5(s390_fallocate, int, fd, int, mode, loff_t, offset,
+			       u32, len_high, u32, len_low)
 {
 	return sys_fallocate(fd, mode, offset, ((u64)len_high << 32) | len_low);
 }
-#ifdef CONFIG_HAVE_SYSCALL_WRAPPERS
-asmlinkage long SyS_s390_fallocate(long fd, long mode, loff_t offset,
-				   long len_high, long len_low)
-{
-	return SYSC_s390_fallocate((int) fd, (int) mode, offset,
-				   (u32) len_high, (u32) len_low);
-}
-SYSCALL_ALIAS(sys_s390_fallocate, SyS_s390_fallocate);
-#endif
-
 #endif

fs/dcookies.c

@@ -145,7 +145,7 @@ int get_dcookie(struct path *path, unsigned long *cookie)
 /* And here is where the userspace process can look up the cookie value
  * to retrieve the path.
  */
-SYSCALL_DEFINE(lookup_dcookie)(u64 cookie64, char __user * buf, size_t len)
+SYSCALL_DEFINE3(lookup_dcookie, u64, cookie64, char __user *, buf, size_t, len)
 {
 	unsigned long cookie = (unsigned long)cookie64;
 	int err = -EINVAL;
@@ -201,13 +201,6 @@ SYSCALL_DEFINE(lookup_dcookie)(u64 cookie64, char __user * buf, size_t len)
 	mutex_unlock(&dcookie_mutex);
 	return err;
 }
-#ifdef CONFIG_HAVE_SYSCALL_WRAPPERS
-asmlinkage long SyS_lookup_dcookie(u64 cookie64, long buf, long len)
-{
-	return SYSC_lookup_dcookie(cookie64, (char __user *) buf, (size_t) len);
-}
-SYSCALL_ALIAS(sys_lookup_dcookie, SyS_lookup_dcookie);
-#endif
 
 static int dcookie_init(void)
 {

fs/notify/fanotify/fanotify_user.c

@@ -755,9 +755,9 @@ SYSCALL_DEFINE2(fanotify_init, unsigned int, flags, unsigned int, event_f_flags)
 	return fd;
 }
 
-SYSCALL_DEFINE(fanotify_mark)(int fanotify_fd, unsigned int flags,
-			      __u64 mask, int dfd,
-			      const char  __user * pathname)
+SYSCALL_DEFINE5(fanotify_mark, int, fanotify_fd, unsigned int, flags,
+			      __u64, mask, int, dfd,
+			      const char  __user *, pathname)
 {
 	struct inode *inode = NULL;
 	struct vfsmount *mnt = NULL;
@@ -857,17 +857,6 @@ SYSCALL_DEFINE(fanotify_mark)(int fanotify_fd, unsigned int flags,
 	return ret;
 }
 
-#ifdef CONFIG_HAVE_SYSCALL_WRAPPERS
-asmlinkage long SyS_fanotify_mark(long fanotify_fd, long flags, __u64 mask,
-				  long dfd, long pathname)
-{
-	return SYSC_fanotify_mark((int) fanotify_fd, (unsigned int) flags,
-				  mask, (int) dfd,
-				  (const char  __user *) pathname);
-}
-SYSCALL_ALIAS(sys_fanotify_mark, SyS_fanotify_mark);
-#endif
-
 /*
  * fanotify_user_setup - Our initialization function.  Note that we cannot return
  * error because we have compiled-in VFS hooks.  So an (unlikely) failure here

fs/open.c

@@ -212,32 +212,18 @@ COMPAT_SYSCALL_DEFINE2(ftruncate, unsigned int, fd, compat_ulong_t, length)
 
 /* LFS versions of truncate are only needed on 32 bit machines */
 #if BITS_PER_LONG == 32
-SYSCALL_DEFINE(truncate64)(const char __user * path, loff_t length)
+SYSCALL_DEFINE2(truncate64, const char __user *, path, loff_t, length)
 {
 	return do_sys_truncate(path, length);
 }
-#ifdef CONFIG_HAVE_SYSCALL_WRAPPERS
-asmlinkage long SyS_truncate64(long path, loff_t length)
-{
-	return SYSC_truncate64((const char __user *) path, length);
-}
-SYSCALL_ALIAS(sys_truncate64, SyS_truncate64);
-#endif
 
-SYSCALL_DEFINE(ftruncate64)(unsigned int fd, loff_t length)
+SYSCALL_DEFINE2(ftruncate64, unsigned int, fd, loff_t, length)
 {
 	long ret = do_sys_ftruncate(fd, length, 0);
 	/* avoid REGPARM breakage on x86: */
 	asmlinkage_protect(2, ret, fd, length);
 	return ret;
 }
-#ifdef CONFIG_HAVE_SYSCALL_WRAPPERS
-asmlinkage long SyS_ftruncate64(long fd, loff_t length)
-{
-	return SYSC_ftruncate64((unsigned int) fd, length);
-}
-SYSCALL_ALIAS(sys_ftruncate64, SyS_ftruncate64);
-#endif
 #endif /* BITS_PER_LONG == 32 */
 
 
@@ -299,7 +285,7 @@ int do_fallocate(struct file *file, int mode, loff_t offset, loff_t len)
 	return ret;
 }
 
-SYSCALL_DEFINE(fallocate)(int fd, int mode, loff_t offset, loff_t len)
+SYSCALL_DEFINE4(fallocate, int, fd, int, mode, loff_t, offset, loff_t, len)
 {
 	struct fd f = fdget(fd);
 	int error = -EBADF;
@@ -311,14 +297,6 @@ SYSCALL_DEFINE(fallocate)(int fd, int mode, loff_t offset, loff_t len)
 	return error;
 }
 
-#ifdef CONFIG_HAVE_SYSCALL_WRAPPERS
-asmlinkage long SyS_fallocate(long fd, long mode, loff_t offset, loff_t len)
-{
-	return SYSC_fallocate((int)fd, (int)mode, offset, len);
-}
-SYSCALL_ALIAS(sys_fallocate, SyS_fallocate);
-#endif
-
 /*
  * access() needs to use the real uid/gid, not the effective uid/gid.
  * We do this by temporarily clearing all FS-related capabilities and

fs/read_write.c

@@ -487,8 +487,8 @@ SYSCALL_DEFINE3(write, unsigned int, fd, const char __user *, buf,
 	return ret;
 }
 
-SYSCALL_DEFINE(pread64)(unsigned int fd, char __user *buf,
-			size_t count, loff_t pos)
+SYSCALL_DEFINE4(pread64, unsigned int, fd, char __user *, buf,
+			size_t, count, loff_t, pos)
 {
 	struct fd f;
 	ssize_t ret = -EBADF;
@@ -506,17 +506,9 @@ SYSCALL_DEFINE(pread64)(unsigned int fd, char __user *buf,
 
 	return ret;
 }
-#ifdef CONFIG_HAVE_SYSCALL_WRAPPERS
-asmlinkage long SyS_pread64(long fd, long buf, long count, loff_t pos)
-{
-	return SYSC_pread64((unsigned int) fd, (char __user *) buf,
-			    (size_t) count, pos);
-}
-SYSCALL_ALIAS(sys_pread64, SyS_pread64);
-#endif
 
-SYSCALL_DEFINE(pwrite64)(unsigned int fd, const char __user *buf,
-			 size_t count, loff_t pos)
+SYSCALL_DEFINE4(pwrite64, unsigned int, fd, const char __user *, buf,
+			 size_t, count, loff_t, pos)
 {
 	struct fd f;
 	ssize_t ret = -EBADF;
@@ -534,14 +526,6 @@ SYSCALL_DEFINE(pwrite64)(unsigned int fd, const char __user *buf,
 
 	return ret;
 }
-#ifdef CONFIG_HAVE_SYSCALL_WRAPPERS
-asmlinkage long SyS_pwrite64(long fd, long buf, long count, loff_t pos)
-{
-	return SYSC_pwrite64((unsigned int) fd, (const char __user *) buf,
-			     (size_t) count, pos);
-}
-SYSCALL_ALIAS(sys_pwrite64, SyS_pwrite64);
-#endif
 
 /*
  * Reduce an iovec's length in-place.  Return the resulting number of segments

fs/sync.c

@@ -283,8 +283,8 @@ EXPORT_SYMBOL(generic_write_sync);
  * already-instantiated disk blocks, there are no guarantees here that the data
  * will be available after a crash.
  */
-SYSCALL_DEFINE(sync_file_range)(int fd, loff_t offset, loff_t nbytes,
-				unsigned int flags)
+SYSCALL_DEFINE4(sync_file_range, int, fd, loff_t, offset, loff_t, nbytes,
+				unsigned int, flags)
 {
 	int ret;
 	struct fd f;
@@ -365,29 +365,11 @@ SYSCALL_DEFINE(sync_file_range)(int fd, loff_t offset, loff_t nbytes,
 out:
 	return ret;
 }
-#ifdef CONFIG_HAVE_SYSCALL_WRAPPERS
-asmlinkage long SyS_sync_file_range(long fd, loff_t offset, loff_t nbytes,
-				    long flags)
-{
-	return SYSC_sync_file_range((int) fd, offset, nbytes,
-				    (unsigned int) flags);
-}
-SYSCALL_ALIAS(sys_sync_file_range, SyS_sync_file_range);
-#endif
 
 /* It would be nice if people remember that not all the world's an i386
    when they introduce new system calls */
-SYSCALL_DEFINE(sync_file_range2)(int fd, unsigned int flags,
-				 loff_t offset, loff_t nbytes)
+SYSCALL_DEFINE4(sync_file_range2, int, fd, unsigned int, flags,
+				 loff_t, offset, loff_t, nbytes)
 {
 	return sys_sync_file_range(fd, offset, nbytes, flags);
 }
-#ifdef CONFIG_HAVE_SYSCALL_WRAPPERS
-asmlinkage long SyS_sync_file_range2(long fd, long flags,
-				     loff_t offset, loff_t nbytes)
-{
-	return SYSC_sync_file_range2((int) fd, (unsigned int) flags,
-				     offset, nbytes);
-}
-SYSCALL_ALIAS(sys_sync_file_range2, SyS_sync_file_range2);
-#endif

include/linux/syscalls.h

@@ -96,9 +96,10 @@ struct sigaltstack;
 #define __MAP(n,...) __MAP##n(__VA_ARGS__)
 
 #define __SC_DECL(t, a)	t a
-#define __SC_LONG(t, a)	long a
+#define __TYPE_IS_LL(t) (__same_type((t)0, 0LL) || __same_type((t)0, 0ULL))
+#define __SC_LONG(t, a) __typeof(__builtin_choose_expr(__TYPE_IS_LL(t), 0LL, 0L)) a
 #define __SC_CAST(t, a)	(t) a
-#define __SC_TEST(t, a) (void)BUILD_BUG_ON_ZERO(sizeof(type) > sizeof(long))
+#define __SC_TEST(t, a) (void)BUILD_BUG_ON_ZERO(!__TYPE_IS_LL(t) && sizeof(t) > sizeof(long))
 
 #ifdef CONFIG_FTRACE_SYSCALLS
 #define __SC_STR_ADECL(t, a)	#a

mm/fadvise.c

@@ -25,7 +25,7 @@
  * POSIX_FADV_WILLNEED could set PG_Referenced, and POSIX_FADV_NOREUSE could
  * deactivate the pages and clear PG_Referenced.
  */
-SYSCALL_DEFINE(fadvise64_64)(int fd, loff_t offset, loff_t len, int advice)
+SYSCALL_DEFINE4(fadvise64_64, int, fd, loff_t, offset, loff_t, len, int, advice)
 {
 	struct fd f = fdget(fd);
 	struct address_space *mapping;
@@ -145,26 +145,12 @@ SYSCALL_DEFINE(fadvise64_64)(int fd, loff_t offset, loff_t len, int advice)
 	fdput(f);
 	return ret;
 }
-#ifdef CONFIG_HAVE_SYSCALL_WRAPPERS
-asmlinkage long SyS_fadvise64_64(long fd, loff_t offset, loff_t len, long advice)
-{
-	return SYSC_fadvise64_64((int) fd, offset, len, (int) advice);
-}
-SYSCALL_ALIAS(sys_fadvise64_64, SyS_fadvise64_64);
-#endif
 
 #ifdef __ARCH_WANT_SYS_FADVISE64
 
-SYSCALL_DEFINE(fadvise64)(int fd, loff_t offset, size_t len, int advice)
+SYSCALL_DEFINE4(fadvise64, int, fd, loff_t, offset, size_t, len, int, advice)
 {
 	return sys_fadvise64_64(fd, offset, len, advice);
 }
-#ifdef CONFIG_HAVE_SYSCALL_WRAPPERS
-asmlinkage long SyS_fadvise64(long fd, loff_t offset, long len, long advice)
-{
-	return SYSC_fadvise64((int) fd, offset, (size_t)len, (int)advice);
-}
-SYSCALL_ALIAS(sys_fadvise64, SyS_fadvise64);
-#endif
 
 #endif

mm/readahead.c

@@ -576,7 +576,7 @@ do_readahead(struct address_space *mapping, struct file *filp,
 	return 0;
 }
 
-SYSCALL_DEFINE(readahead)(int fd, loff_t offset, size_t count)
+SYSCALL_DEFINE3(readahead, int, fd, loff_t, offset, size_t, count)
 {
 	ssize_t ret;
 	struct fd f;
@@ -595,10 +595,3 @@ SYSCALL_DEFINE(readahead)(int fd, loff_t offset, size_t count)
 	}
 	return ret;
 }
-#ifdef CONFIG_HAVE_SYSCALL_WRAPPERS
-asmlinkage long SyS_readahead(long fd, loff_t offset, long count)
-{
-	return SYSC_readahead((int) fd, offset, (size_t) count);
-}
-SYSCALL_ALIAS(sys_readahead, SyS_readahead);
-#endif