[[PATCH RFC 2] 20/63] Y2038: add function __futimens64

[Albert ARIBAUD (3ADEV)]

---
 io/futimens.c                      |  8 +++++++
 sysdeps/unix/sysv/linux/futimens.c | 48 ++++++++++++++++++++++++++++++++++++++
 time/Versions                      |  1 +
 3 files changed, 57 insertions(+)

diff --git a/io/futimens.c b/io/futimens.c
index fb170ffc3c..2e9648a16e 100644
--- a/io/futimens.c
+++ b/io/futimens.c
@@ -32,3 +32,11 @@ futimens (int fd, const struct timespec tsp[2])
   return -1;
 }
 stub_warning (futimens)
+
+int
+__futimens64 (int fd, const struct __timespec64 tsp[2])
+{
+  __set_errno (ENOSYS);
+  return -1;
+}
+stub_warning (__futimens64)
diff --git a/sysdeps/unix/sysv/linux/futimens.c b/sysdeps/unix/sysv/linux/futimens.c
index bc7fe54331..fb338b92ea 100644
--- a/sysdeps/unix/sysv/linux/futimens.c
+++ b/sysdeps/unix/sysv/linux/futimens.c
@@ -36,3 +36,51 @@ futimens (int fd, const struct timespec tsp[2])
   /* Avoid implicit array coercion in syscall macros.  */
   return INLINE_SYSCALL (utimensat, 4, fd, NULL, &tsp[0], 0);
 }
+
+/* 64-bit time version */
+
+extern int __y2038_linux_support;
+
+int
+__futimens64 (int fd, const struct __timespec64 tsp[2])
+{
+  struct timespec ts32[2];
+/* Only try and use this syscall if defined by kernel */
+#ifdef __NR_utimesat64
+  struct __timespec64 ts64[2];
+  int res;
+#endif
+
+  if (fd < 0)
+    return INLINE_SYSCALL_ERROR_RETURN_VALUE (EBADF);
+
+/* Only try and use this syscall if defined by kernel */
+#ifdef __NR_utimesat64
+  if (__y2038_linux_support)
+    {
+      ts64[0].tv_sec = tsp[0].tv_sec;
+      ts64[0].tv_nsec = tsp[0].tv_nsec;
+      ts64[0].tv_pad = 0;
+      ts64[1].tv_sec = tsp[1].tv_sec;
+      ts64[1].tv_nsec = tsp[1].tv_nsec;
+      ts64[1].tv_pad = 0;
+      res = INLINE_SYSCALL (utimensat64, 4, fd, NULL, &ts64[0], 0);
+      if (res == 0 || errno != ENOSYS)
+        return res;
+    }
+#endif
+
+  if (! timespec64_to_timespec(&tsp[0], &ts32[0]))
+    {
+      __set_errno(EOVERFLOW);
+      return -1;
+    }
+
+  if (! timespec64_to_timespec(&tsp[1], &ts32[1]))
+    {
+      __set_errno(EOVERFLOW);
+      return -1;
+    }
+
+  return INLINE_SYSCALL (utimensat, 4, fd, NULL, &ts32[0], 0);
+}
diff --git a/time/Versions b/time/Versions
index 668c134f12..6105da5cb9 100644
--- a/time/Versions
+++ b/time/Versions
@@ -79,5 +79,6 @@ libc {
     __clock_getres64;
     __clock_nanosleep64;
     __timespec_get64;
+    __futimens64;
   }
 }
-- 
2.14.1