1 /* Copyright (C) 1995-2013 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <http://www.gnu.org/licenses/>. */
21 #include <sys/timex.h>
23 #include <kernel-features.h>
25 #define MAX_SEC (INT_MAX / 1000000L - 2)
26 #define MIN_SEC (INT_MIN / 1000000L + 2)
33 #define TIMEVAL timeval
41 #define ADJTIME __adjtime
45 #define NO_LOCAL_ADJTIME
46 #define ADJTIMEX(x) INTUSE(__adjtimex) (x)
47 extern int INTUSE(__adjtimex
) (struct timex
*__ntx
);
55 ADJTIME (const struct TIMEVAL
*itv
, struct TIMEVAL
*otv
)
63 /* We will do some check here. */
64 tmp
.tv_sec
= itv
->tv_sec
+ itv
->tv_usec
/ 1000000L;
65 tmp
.tv_usec
= itv
->tv_usec
% 1000000L;
66 if (tmp
.tv_sec
> MAX_SEC
|| tmp
.tv_sec
< MIN_SEC
)
71 tntx
.offset
= tmp
.tv_usec
+ tmp
.tv_sec
* 1000000L;
72 tntx
.modes
= ADJ_OFFSET_SINGLESHOT
;
76 #ifdef ADJ_OFFSET_SS_READ
77 tntx
.modes
= ADJ_OFFSET_SS_READ
;
83 #if defined ADJ_OFFSET_SS_READ && !defined __ASSUME_ADJ_OFFSET_SS_READ
86 if (__builtin_expect (ADJTIMEX (&tntx
) < 0, 0))
88 #if defined ADJ_OFFSET_SS_READ && !defined __ASSUME_ADJ_OFFSET_SS_READ
89 if (itv
&& errno
== EINVAL
&& tntx
.modes
== ADJ_OFFSET_SS_READ
)
91 tntx
.modes
= ADJ_OFFSET_SINGLESHOT
;
102 otv
->tv_usec
= -(-tntx
.offset
% 1000000);
103 otv
->tv_sec
= -(-tntx
.offset
/ 1000000);
107 otv
->tv_usec
= tntx
.offset
% 1000000;
108 otv
->tv_sec
= tntx
.offset
/ 1000000;
114 #ifdef NO_LOCAL_ADJTIME
115 weak_alias (__adjtime
, adjtime
)