Y2038: add function __utimensat_time64

3 files changed, 68 insertions, 0 deletions

diff --git a/io/utimensat.c b/io/utimensat.c
index 6b67a52..c535930 100644
--- a/io/utimensat.c
+++ b/io/utimensat.c
@@ -30,3 +30,12 @@ utimensat (int fd, const char *file, const struct timespec tsp[2],
   return -1;
 }
 stub_warning (utimensat)
+
+int
+__utimensat_time64 (int fd, const char *file, const struct __timespec64 tsp[2],
+	   int flags)
+{
+  __set_errno (ENOSYS);
+  return -1;
+}
+stub_warning (__utimensat_time64)
diff --git a/sysdeps/unix/sysv/linux/utimensat.c b/sysdeps/unix/sysv/linux/utimensat.c
index 108d3bc..a0d1f5d 100644
--- a/sysdeps/unix/sysv/linux/utimensat.c
+++ b/sysdeps/unix/sysv/linux/utimensat.c
@@ -19,6 +19,7 @@
 #include <errno.h>
 #include <sys/stat.h>
 #include <sysdep.h>
+#include <y2038-support.h>
 
 
 /* Change the access time of FILE to TSP[0] and
@@ -34,3 +35,60 @@ utimensat (int fd, const char *file, const struct timespec tsp[2],
   /* Avoid implicit array coercion in syscall macros.  */
   return INLINE_SYSCALL (utimensat, 4, fd, file, &tsp[0], flags);
 }
+
+/* 64-bit time version */
+
+int
+__utimensat_time64 (int fd, const char *file, const struct __timespec64 tsp[2],
+		    int flags)
+{
+  struct timespec ts32[2], *ts32p = NULL;
+/* Only try and use this syscall if defined by kernel */
+#ifdef __NR_utimensat_time64
+  struct __timespec64 ts64[2], *ts64p = NULL;
+  int res;
+#endif
+
+  if (file == NULL)
+    return INLINE_SYSCALL_ERROR_RETURN_VALUE (EINVAL);
+
+/* Only try and use this syscall if defined by kernel */
+#ifdef __NR_utimensat_time64
+  if (__y2038_linux_support > 0)
+    {
+      if (tsp)
+        {
+          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;
+          ts64p = ts64;
+        }
+
+      res = INLINE_SYSCALL (utimensat_time64, 4, fd, file, ts64p, flags);
+      if (res == 0 || errno != ENOSYS)
+        return res;
+      __y2038_linux_support = -1;
+    }
+#endif
+
+  if (tsp)
+    {
+      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;
+        }
+      ts32p = ts32;
+    }
+
+  return INLINE_SYSCALL (utimensat, 4, fd, file, ts32p, flags);
+}
diff --git a/time/Versions b/time/Versions
index 1e4d81b..c5f6336 100644
--- a/time/Versions
+++ b/time/Versions
@@ -75,5 +75,6 @@ libc {
     __clock_getres_time64;
     __clock_nanosleep64;
     __timespec_get64;
+    __utimensat_time64;
   }
 }