[glibc/azanella/y2038] linux: Simplify utimensat

[Adhemerval Zanella <azanella@sourceware.org>]

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=257683dba0d2ea31180c0b672d050b2cdbbc7d66

commit 257683dba0d2ea31180c0b672d050b2cdbbc7d66
Author: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date:   Fri Jul 10 15:13:48 2020 -0300

    linux: Simplify utimensat
    
    With arch-syscall.h it can now assumes the existance of either
    __NR_utimensat or __NR_utimensat_time64.  The 32-bit time_t
    support is now only build for !__ASSUME_TIME64_SYSCALLS.
    
    Checked on x86_64-linux-gnu and i686-linux-gnu (on 5.4 and on 4.15
    kernel).

Diff:
---
 sysdeps/unix/sysv/linux/utimensat.c | 23 ++++++++++-------------
 1 file changed, 10 insertions(+), 13 deletions(-)

diff --git a/sysdeps/unix/sysv/linux/utimensat.c b/sysdeps/unix/sysv/linux/utimensat.c
index eb16f0f3d5..ea23c2f051 100644
--- a/sysdeps/unix/sysv/linux/utimensat.c
+++ b/sysdeps/unix/sysv/linux/utimensat.c
@@ -28,18 +28,15 @@ int
 __utimensat64_helper (int fd, const char *file,
                       const struct __timespec64 tsp64[2], int flags)
 {
-#ifdef __ASSUME_TIME64_SYSCALLS
-# ifndef __NR_utimensat_time64
-#  define __NR_utimensat_time64 __NR_utimensat
-# endif
-  return INLINE_SYSCALL (utimensat_time64, 4, fd, file, &tsp64[0], flags);
-#else
-# ifdef __NR_utimensat_time64
-  int ret = INLINE_SYSCALL (utimensat_time64, 4, fd, file, &tsp64[0], flags);
+#ifndef __NR_utimensat_time64
+# define __NR_utimensat_time64 __NR_utimensat
+#endif
+  int ret = INLINE_SYSCALL_CALL (utimensat_time64, fd, file, &tsp64[0], flags);
+#ifndef __ASSUME_TIME64_SYSCALLS
   if (ret == 0 || errno != ENOSYS)
     return ret;
-# endif
-  if (tsp64
+
+  if (tsp64 != NULL
       && (! in_time_t_range (tsp64[0].tv_sec)
           || ! in_time_t_range (tsp64[1].tv_sec)))
     {
@@ -54,10 +51,10 @@ __utimensat64_helper (int fd, const char *file,
       tsp32[1] = valid_timespec64_to_timespec (tsp64[1]);
     }
 
-  return INLINE_SYSCALL (utimensat, 4, fd, file, tsp64 ? &tsp32[0] : NULL,
-                         flags);
+  ret = INLINE_SYSCALL_CALL (utimensat, fd, file, tsp64 ? &tsp32[0] : NULL,
+			     flags);
 #endif
-
+  return ret;
 }
 libc_hidden_def (__utimensat64_helper)