mm/compat: convert to COMPAT_SYSCALL_DEFINE with changing parameter types

In order to allow the COMPAT_SYSCALL_DEFINE macro generate code that
performs proper zero and sign extension convert all 64 bit parameters
to their corresponding 32 bit compat counterparts.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>

3 files changed, 22 insertions, 24 deletions

diff --git a/include/linux/compat.h b/include/linux/compat.h
index ef4834c..7c76562 100644
--- a/include/linux/compat.h
+++ b/include/linux/compat.h
@@ -469,7 +469,7 @@ asmlinkage long compat_sys_timerfd_settime(int ufd, int flags,
 asmlinkage long compat_sys_timerfd_gettime(int ufd,
 				   struct compat_itimerspec __user *otmr);
 
-asmlinkage long compat_sys_move_pages(pid_t pid, unsigned long nr_page,
+asmlinkage long compat_sys_move_pages(pid_t pid, compat_ulong_t nr_pages,
 				      __u32 __user *pages,
 				      const int __user *nodes,
 				      int __user *status,
@@ -674,12 +674,12 @@ extern void __user *compat_alloc_user_space(unsigned long len);
 
 asmlinkage ssize_t compat_sys_process_vm_readv(compat_pid_t pid,
 		const struct compat_iovec __user *lvec,
-		unsigned long liovcnt, const struct compat_iovec __user *rvec,
-		unsigned long riovcnt, unsigned long flags);
+		compat_ulong_t liovcnt, const struct compat_iovec __user *rvec,
+		compat_ulong_t riovcnt, compat_ulong_t flags);
 asmlinkage ssize_t compat_sys_process_vm_writev(compat_pid_t pid,
 		const struct compat_iovec __user *lvec,
-		unsigned long liovcnt, const struct compat_iovec __user *rvec,
-		unsigned long riovcnt, unsigned long flags);
+		compat_ulong_t liovcnt, const struct compat_iovec __user *rvec,
+		compat_ulong_t riovcnt, compat_ulong_t flags);
 
 asmlinkage long compat_sys_sendfile(int out_fd, int in_fd,
 				    compat_off_t __user *offset, compat_size_t count);
diff --git a/kernel/compat.c b/kernel/compat.c
index 2622011..488ff8c 100644
--- a/kernel/compat.c
+++ b/kernel/compat.c
@@ -1065,11 +1065,11 @@ COMPAT_SYSCALL_DEFINE1(adjtimex, struct compat_timex __user *, utp)
 }
 
 #ifdef CONFIG_NUMA
-asmlinkage long compat_sys_move_pages(pid_t pid, unsigned long nr_pages,
-		compat_uptr_t __user *pages32,
-		const int __user *nodes,
-		int __user *status,
-		int flags)
+COMPAT_SYSCALL_DEFINE6(move_pages, pid_t, pid, compat_ulong_t, nr_pages,
+		       compat_uptr_t __user *, pages32,
+		       const int __user *, nodes,
+		       int __user *, status,
+		       int, flags)
 {
 	const void __user * __user *pages;
 	int i;
diff --git a/mm/process_vm_access.c b/mm/process_vm_access.c
index fd26d04..3c5cf68 100644
--- a/mm/process_vm_access.c
+++ b/mm/process_vm_access.c
@@ -456,25 +456,23 @@ free_iovecs:
 	return rc;
 }
 
-asmlinkage ssize_t
-compat_sys_process_vm_readv(compat_pid_t pid,
-			    const struct compat_iovec __user *lvec,
-			    unsigned long liovcnt,
-			    const struct compat_iovec __user *rvec,
-			    unsigned long riovcnt,
-			    unsigned long flags)
+COMPAT_SYSCALL_DEFINE6(process_vm_readv, compat_pid_t, pid,
+		       const struct compat_iovec __user *, lvec,
+		       compat_ulong_t, liovcnt,
+		       const struct compat_iovec __user *, rvec,
+		       compat_ulong_t, riovcnt,
+		       compat_ulong_t, flags)
 {
 	return compat_process_vm_rw(pid, lvec, liovcnt, rvec,
 				    riovcnt, flags, 0);
 }
 
-asmlinkage ssize_t
-compat_sys_process_vm_writev(compat_pid_t pid,
-			     const struct compat_iovec __user *lvec,
-			     unsigned long liovcnt,
-			     const struct compat_iovec __user *rvec,
-			     unsigned long riovcnt,
-			     unsigned long flags)
+COMPAT_SYSCALL_DEFINE6(process_vm_writev, compat_pid_t, pid,
+		       const struct compat_iovec __user *, lvec,
+		       compat_ulong_t, liovcnt,
+		       const struct compat_iovec __user *, rvec,
+		       compat_ulong_t, riovcnt,
+		       compat_ulong_t, flags)
 {
 	return compat_process_vm_rw(pid, lvec, liovcnt, rvec,
 				    riovcnt, flags, 1);