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71 lines
2.0 KiB
C
71 lines
2.0 KiB
C
/* clock_adjtime -- tune kernel clock.
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Copyright (C) 2020-2024 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public License as
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published by the Free Software Foundation; either version 2.1 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; see the file COPYING.LIB. If
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not, see <https://www.gnu.org/licenses/>. */
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#include <errno.h>
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#include <stdlib.h>
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#include <time.h>
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#include <sysdep.h>
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#include <sys/timex.h>
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#include <kernel-features.h>
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int
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__clock_adjtime64 (const clockid_t clock_id, struct __timex64 *tx64)
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{
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#ifndef __NR_clock_adjtime64
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# define __NR_clock_adjtime64 __NR_clock_adjtime
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#endif
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int r = INLINE_SYSCALL_CALL (clock_adjtime64, clock_id, tx64);
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#ifndef __ASSUME_TIME64_SYSCALLS
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if (r >= 0 || errno != ENOSYS)
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return r;
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if (tx64->modes & ADJ_SETOFFSET
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&& ! in_int32_t_range (tx64->time.tv_sec))
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{
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__set_errno (EOVERFLOW);
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return -1;
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}
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struct timex tx32 = valid_timex64_to_timex (*tx64);
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r = INLINE_SYSCALL_CALL (clock_adjtime, clock_id, &tx32);
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if (r >= 0)
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*tx64 = valid_timex_to_timex64 (tx32);
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#endif
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return r;
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}
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#if __TIMESIZE != 64
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libc_hidden_def (__clock_adjtime64)
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int
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__clock_adjtime (const clockid_t clock_id, struct timex *tx)
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{
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struct __timex64 tx64;
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int retval;
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tx64 = valid_timex_to_timex64 (*tx);
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retval = __clock_adjtime64 (clock_id, &tx64);
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if (retval >= 0)
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*tx = valid_timex64_to_timex (tx64);
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return retval;
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}
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#endif
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libc_hidden_def (__clock_adjtime);
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strong_alias (__clock_adjtime, clock_adjtime)
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