sparc: switch compat {f,}truncate64() to COMPAT_SYSCALL_DEFINE

... and drop the pointless checks - sys_truncate() itself
might've lacked the check when that stuff was first written,
but it has already grown one by the time that stuff went into
mainline.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

arch/sparc/kernel/sys_sparc32.c

@@ -52,20 +52,14 @@
 
 #include "systbls.h"
 
-asmlinkage long sys32_truncate64(const char __user * path, unsigned long high, unsigned long low)
+COMPAT_SYSCALL_DEFINE3(truncate64, const char __user *, path, u32, high, u32, low)
 {
-	if ((int)high < 0)
-		return -EINVAL;
-	else
-		return sys_truncate(path, (high << 32) | low);
+	return sys_truncate(path, ((u64)high << 32) | low);
 }
 
-asmlinkage long sys32_ftruncate64(unsigned int fd, unsigned long high, unsigned long low)
+COMPAT_SYSCALL_DEFINE3(ftruncate64, unsigned int, fd, u32, high, u32, low)
 {
-	if ((int)high < 0)
-		return -EINVAL;
-	else
-		return sys_ftruncate(fd, (high << 32) | low);
+	return sys_ftruncate(fd, ((u64)high << 32) | low);
 }
 
 static int cp_compat_stat64(struct kstat *stat,

arch/sparc/kernel/systbls.h

@@ -49,12 +49,12 @@ asmlinkage long sys_utrap_install(utrap_entry_t type,
 asmlinkage long sys_memory_ordering(unsigned long model);
 asmlinkage void sparc64_set_context(struct pt_regs *regs);
 asmlinkage void sparc64_get_context(struct pt_regs *regs);
-asmlinkage long sys32_truncate64(const char __user * path,
-				 unsigned long high,
-				 unsigned long low);
-asmlinkage long sys32_ftruncate64(unsigned int fd,
-				  unsigned long high,
-				  unsigned long low);
+asmlinkage long compat_sys_truncate64(const char __user * path,
+				 u32 high,
+				 u32 low);
+asmlinkage long compat_sys_ftruncate64(unsigned int fd,
+				  u32 high,
+				  u32 low);
 struct compat_stat64;
 asmlinkage long compat_sys_stat64(const char __user * filename,
 				  struct compat_stat64 __user *statbuf);

arch/sparc/kernel/systbls_64.S

@@ -34,8 +34,8 @@ sys_call_table32:
 /*60*/	.word sys_umask, sys_chroot, compat_sys_newfstat, compat_sys_fstat64, sys_getpagesize
 	.word sys_msync, sys_vfork, compat_sys_pread64, compat_sys_pwrite64, sys_geteuid
 /*70*/	.word sys_getegid, sys_mmap, sys_setreuid, sys_munmap, sys_mprotect
-	.word sys_madvise, sys_vhangup, sys32_truncate64, sys_mincore, sys_getgroups16
-/*80*/	.word sys_setgroups16, sys_getpgrp, sys_setgroups, compat_sys_setitimer, sys32_ftruncate64
+	.word sys_madvise, sys_vhangup, compat_sys_truncate64, sys_mincore, sys_getgroups16
+/*80*/	.word sys_setgroups16, sys_getpgrp, sys_setgroups, compat_sys_setitimer, compat_sys_ftruncate64
 	.word sys_swapon, compat_sys_getitimer, sys_setuid, sys_sethostname, sys_setgid
 /*90*/	.word sys_dup2, sys_setfsuid, compat_sys_fcntl, compat_sys_select, sys_setfsgid
 	.word sys_fsync, sys_setpriority, sys_socket, sys_connect, sys_accept