1 files changed, 73 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/clock_adjtime.c b/sysdeps/unix/sysv/linux/clock_adjtime.c
new file mode 100644
index 0000000..764a60b
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/clock_adjtime.c
@@ -0,0 +1,73 @@
+/* clock_adjtime -- tune kernel clock.
+   Copyright (C) 2020 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If
+   not, see <https://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <stdlib.h>
+#include <time.h>
+#include <sysdep.h>
+#include <sys/timex.h>
+#include <kernel-features.h>
+
+int
+__clock_adjtime64 (const clockid_t clock_id, struct __timex64 *tx64)
+{
+#ifdef __ASSUME_TIME64_SYSCALLS
+# ifndef __NR_clock_adjtime64
+#  define __NR_clock_adjtime64 __NR_clock_adjtime
+# endif
+	return INLINE_SYSCALL_CALL (clock_adjtime64, clock_id, tx64);
+#else
+  int ret = INLINE_SYSCALL_CALL (clock_adjtime64, clock_id, tx64);
+  if (errno != ENOSYS)
+    return ret;
+
+  if (tx64->modes & ADJ_SETOFFSET
+      && ! in_time_t_range (tx64->time.tv_sec))
+    {
+      __set_errno (EOVERFLOW);
+      return -1;
+    }
+
+  struct timex tx32 = valid_timex64_to_timex (*tx64);
+  int retval = INLINE_SYSCALL_CALL (clock_adjtime, clock_id, &tx32);
+  if (retval >= 0)
+    *tx64 = valid_timex_to_timex64 (tx32);
+
+  return retval;
+#endif
+}
+
+#if __TIMESIZE != 64
+libc_hidden_def (__clock_adjtime64)
+
+int
+__clock_adjtime (const clockid_t clock_id, struct timex *tx)
+{
+  struct __timex64 tx64;
+  int retval;
+
+  tx64 = valid_timex_to_timex64 (*tx);
+  retval = __clock_adjtime64 (clock_id, &tx64);
+  if (retval >= 0)
+    *tx = valid_timex64_to_timex (tx64);
+
+  return retval;
+}
+#endif
+libc_hidden_def (__clock_adjtime);
+strong_alias (__clock_adjtime, clock_adjtime)