1 /* Copyright (C) 1995, 1996, 1997, 1998, 2002, 2004, 2007
2 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, write to the Free
17 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
23 #include <sys/timex.h>
25 #include <kernel-features.h>
27 #define MAX_SEC (INT_MAX / 1000000L - 2)
28 #define MIN_SEC (INT_MIN / 1000000L + 2)
35 #define TIMEVAL timeval
43 #define ADJTIME __adjtime
47 #define NO_LOCAL_ADJTIME
48 #define ADJTIMEX(x) INTUSE(__adjtimex) (x)
49 extern int INTUSE(__adjtimex
) (struct timex
*__ntx
);
57 ADJTIME (const struct TIMEVAL
*itv
, struct TIMEVAL
*otv
)
65 /* We will do some check here. */
66 tmp
.tv_sec
= itv
->tv_sec
+ itv
->tv_usec
/ 1000000L;
67 tmp
.tv_usec
= itv
->tv_usec
% 1000000L;
68 if (tmp
.tv_sec
> MAX_SEC
|| tmp
.tv_sec
< MIN_SEC
)
73 tntx
.offset
= tmp
.tv_usec
+ tmp
.tv_sec
* 1000000L;
74 #ifdef ADJ_OFFSET_SS_READ
75 tntx
.modes
= ADJ_OFFSET_SS_READ
;
77 tntx
.modes
= ADJ_OFFSET_SINGLESHOT
;
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
)