[CVE-2009-0029] Make sys_pselect7 static

Not a single architecture has wired up sys_pselect7 plus it is the
only system call with seven parameters. Just make it static and
rename it to do_pselect which will do the work for sys_pselect6.
Signed-off-by: NHeiko Carstens <heiko.carstens@de.ibm.com>

fs/compat.c

@@ -1709,7 +1709,7 @@ asmlinkage long compat_sys_select(int n, compat_ulong_t __user *inp,
 }
 
 #ifdef HAVE_SET_RESTORE_SIGMASK
-asmlinkage long compat_sys_pselect7(int n, compat_ulong_t __user *inp,
+static long do_compat_pselect(int n, compat_ulong_t __user *inp,
 	compat_ulong_t __user *outp, compat_ulong_t __user *exp,
 	struct compat_timespec __user *tsp, compat_sigset_t __user *sigmask,
 	compat_size_t sigsetsize)
@@ -1775,8 +1775,8 @@ asmlinkage long compat_sys_pselect6(int n, compat_ulong_t __user *inp,
 				(compat_size_t __user *)(sig+sizeof(up))))
 			return -EFAULT;
 	}
-	return compat_sys_pselect7(n, inp, outp, exp, tsp, compat_ptr(up),
-					sigsetsize);
+	return do_compat_pselect(n, inp, outp, exp, tsp, compat_ptr(up),
+				 sigsetsize);
 }
 
 asmlinkage long compat_sys_ppoll(struct pollfd __user *ufds,

fs/select.c

@@ -582,9 +582,9 @@ asmlinkage long sys_select(int n, fd_set __user *inp, fd_set __user *outp,
 }
 
 #ifdef HAVE_SET_RESTORE_SIGMASK
-asmlinkage long sys_pselect7(int n, fd_set __user *inp, fd_set __user *outp,
-		fd_set __user *exp, struct timespec __user *tsp,
-		const sigset_t __user *sigmask, size_t sigsetsize)
+static long do_pselect(int n, fd_set __user *inp, fd_set __user *outp,
+		       fd_set __user *exp, struct timespec __user *tsp,
+		       const sigset_t __user *sigmask, size_t sigsetsize)
 {
 	sigset_t ksigmask, sigsaved;
 	struct timespec ts, end_time, *to = NULL;
@@ -650,7 +650,7 @@ asmlinkage long sys_pselect6(int n, fd_set __user *inp, fd_set __user *outp,
 			return -EFAULT;
 	}
 
-	return sys_pselect7(n, inp, outp, exp, tsp, up, sigsetsize);
+	return do_pselect(n, inp, outp, exp, tsp, up, sigsetsize);
 }
 #endif /* HAVE_SET_RESTORE_SIGMASK */