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/* clock_adjtime -- tune kernel clock.
Copyright (C) 2020-2024 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)
{
#ifndef __NR_clock_adjtime64
# define __NR_clock_adjtime64 __NR_clock_adjtime
#endif
int r = INLINE_SYSCALL_CALL (clock_adjtime64, clock_id, tx64);
#ifndef __ASSUME_TIME64_SYSCALLS
if (r >= 0 || errno != ENOSYS)
return r;
if (tx64->modes & ADJ_SETOFFSET
&& ! in_int32_t_range (tx64->time.tv_sec))
{
__set_errno (EOVERFLOW);
return -1;
}
struct timex tx32 = valid_timex64_to_timex (*tx64);
r = INLINE_SYSCALL_CALL (clock_adjtime, clock_id, &tx32);
if (r >= 0)
*tx64 = valid_timex_to_timex64 (tx32);
#endif
return r;
}
#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)
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