aboutsummaryrefslogtreecommitdiff
path: root/sysdeps/unix/sysv/linux/alpha/adjtime.c
blob: e206cb4727e318f906be7d60bb26ae577ce2dd52 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
/* Copyright (C) 1998, 2000, 2002, 2003, 2004 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; if not, write to the Free
   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
   02111-1307 USA.  */

#include <shlib-compat.h>
#include <sysdep.h>
#include <sys/time.h>
#include "kernel-features.h"

#if !defined __ASSUME_TIMEVAL64 || SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_1)
struct timeval32
{
    int tv_sec, tv_usec;
};

struct timex32 {
	unsigned int modes;	/* mode selector */
	long offset;		/* time offset (usec) */
	long freq;		/* frequency offset (scaled ppm) */
	long maxerror;		/* maximum error (usec) */
	long esterror;		/* estimated error (usec) */
	int status;		/* clock command/status */
	long constant;		/* pll time constant */
	long precision;		/* clock precision (usec) (read only) */
	long tolerance;		/* clock frequency tolerance (ppm)
				 * (read only)
				 */
	struct timeval32 time;	/* (read only) */
	long tick;		/* (modified) usecs between clock ticks */

	long ppsfreq;           /* pps frequency (scaled ppm) (ro) */
	long jitter;            /* pps jitter (us) (ro) */
	int shift;              /* interval duration (s) (shift) (ro) */
	long stabil;            /* pps stability (scaled ppm) (ro) */
	long jitcnt;            /* jitter limit exceeded (ro) */
	long calcnt;            /* calibration intervals (ro) */
	long errcnt;            /* calibration errors (ro) */
	long stbcnt;            /* stability limit exceeded (ro) */

	int  :32; int  :32; int  :32; int  :32;
	int  :32; int  :32; int  :32; int  :32;
	int  :32; int  :32; int  :32; int  :32;
};

#define TIMEVAL		timeval32
#define TIMEX		timex32
#define ADJTIME		attribute_compat_text_section __adjtime_tv32
#define ADJTIMEX(x)	INLINE_SYSCALL (old_adjtimex, 1, x)
#define ADJTIMEX32(x)	INLINE_SYSCALL (old_adjtimex, 1, x)
#if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_1)
#define LINKAGE
#else
#define LINKAGE		static
#endif

LINKAGE int ADJTIME (const struct TIMEVAL *itv, struct TIMEVAL *otv);

#include <sysdeps/unix/sysv/linux/adjtime.c>

#if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_1)
int
attribute_compat_text_section
__adjtimex_tv32 (struct timex32 *tx) { return ADJTIMEX (tx); }
strong_alias (__adjtimex_tv32, __adjtimex_tv32_1);
strong_alias (__adjtimex_tv32, __adjtimex_tv32_2);
compat_symbol (libc, __adjtimex_tv32_1, __adjtimex, GLIBC_2_0);
compat_symbol (libc, __adjtimex_tv32_2, adjtimex, GLIBC_2_0);
compat_symbol (libc, __adjtime_tv32, adjtime, GLIBC_2_0);
#endif
#endif /* !__ASSUME_TIMEVAL64 || SHLIB_COMPAT */

#undef TIMEVAL
#define TIMEVAL		timeval
#undef TIMEX
#define TIMEX		timex
#undef ADJTIMEX
#define ADJTIMEX(x)	INLINE_SYSCALL (adjtimex, 1, x)

#undef LINKAGE
#undef ADJTIME
#if !defined __ASSUME_TIMEVAL64
#define LINKAGE		static
#define ADJTIME		__adjtime_tv64
#endif

#include <sysdeps/unix/sysv/linux/adjtime.c>
#include <stdbool.h>

#if !defined __ASSUME_TIMEVAL64
static bool missing_adjtimex;

int
__adjtime (itv, otv)
     const struct timeval *itv;
     struct timeval *otv;
{
  struct timeval32 itv32, otv32;
  int ret;

  switch (missing_adjtimex)
    {
    case false:
      ret = __adjtime_tv64 (itv, otv);
      if (ret && errno == ENOSYS)
	missing_adjtimex = 1;
      else
	break;

      /* FALLTHRU */

    default:
      itv32.tv_sec = itv->tv_sec;
      itv32.tv_usec = itv->tv_usec;
      ret = __adjtime_tv32 (&itv32, &otv32);
      if (ret == 0)
	{
	  otv->tv_sec = otv32.tv_sec;
	  otv->tv_usec = otv32.tv_usec;
	}
      break;
    }

  return ret;
}
#endif

versioned_symbol (libc, __adjtime, adjtime, GLIBC_2_1);

int
__adjtimex_tv64 (struct timex *tx)
{
#if defined __ASSUME_TIMEVAL64
  return ADJTIMEX (tx);
#else
  struct timex32 tx32;
  int ret;

  switch (missing_adjtimex)
    {
    case false:
      ret = ADJTIMEX (tx);
      if (ret && errno == ENOSYS)
	missing_adjtimex = 1;
      else
	break;

      /* FALLTHRU */

    default:
      tx32.modes = tx->modes;
      tx32.offset = tx->offset;
      tx32.freq = tx->freq;
      tx32.maxerror = tx->maxerror;
      tx32.esterror = tx->esterror;
      tx32.status = tx->status;
      tx32.constant = tx->constant;
      tx32.precision = tx->precision;
      tx32.tolerance = tx->tolerance;
      tx32.time.tv_sec = tx->time.tv_sec;
      tx32.time.tv_sec = tx->time.tv_usec;
      tx32.tick = tx->tick;
      tx32.ppsfreq = tx->ppsfreq;
      tx32.jitter = tx->jitter;
      tx32.shift = tx->shift;
      tx32.stabil = tx->stabil;
      tx32.jitcnt = tx->jitcnt;
      tx32.calcnt = tx->calcnt;
      tx32.errcnt = tx->errcnt;
      tx32.stbcnt = tx->stbcnt;

      ret = ADJTIMEX32 (&tx32);
      if (ret == 0)
	{
	  tx->modes = tx32.modes;
	  tx->offset = tx32.offset;
	  tx->freq = tx32.freq;
	  tx->maxerror = tx32.maxerror;
	  tx->esterror = tx32.esterror;
	  tx->status = tx32.status;
	  tx->constant = tx32.constant;
	  tx->precision = tx32.precision;
	  tx->tolerance = tx32.tolerance;
	  tx->time.tv_sec = tx32.time.tv_sec;
	  tx->time.tv_usec = tx32.time.tv_sec;
	  tx->tick = tx32.tick;
	  tx->ppsfreq = tx32.ppsfreq;
	  tx->jitter = tx32.jitter;
	  tx->shift = tx32.shift;
	  tx->stabil = tx32.stabil;
	  tx->jitcnt = tx32.jitcnt;
	  tx->calcnt = tx32.calcnt;
	  tx->errcnt = tx32.errcnt;
	  tx->stbcnt = tx32.stbcnt;
	}
      break;
    }

  return ret;
#endif
}

strong_alias (__adjtimex_tv64, __adjtimex_internal);
strong_alias (__adjtimex_tv64, __adjtimex_tv64p);
weak_alias (__adjtimex_tv64, ntp_adjtime);
versioned_symbol (libc, __adjtimex_tv64, __adjtimex, GLIBC_2_1);
versioned_symbol (libc, __adjtimex_tv64p, adjtimex, GLIBC_2_1);