1/* adjtime -- adjust the system clock. Linux/Alpha/tv32 version.
2 Copyright (C) 2019-2024 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4
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.
9
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.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <http://www.gnu.org/licenses/>. */
18
19#include <shlib-compat.h>
20
21#if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_1)
22
23#include <time.h>
24#include <sys/time.h>
25#include <sys/timex.h>
26#include <string.h>
27
28struct timex32 {
29 unsigned int modes; /* mode selector */
30 long offset; /* time offset (usec) */
31 long freq; /* frequency offset (scaled ppm) */
32 long maxerror; /* maximum error (usec) */
33 long esterror; /* estimated error (usec) */
34 int status; /* clock command/status */
35 long constant; /* pll time constant */
36 long precision; /* clock precision (usec) (read only) */
37 long tolerance; /* clock frequency tolerance (ppm)
38 * (read only)
39 */
40 struct __timeval32 time; /* (read only) */
41 long tick; /* (modified) usecs between clock ticks */
42
43 long ppsfreq; /* pps frequency (scaled ppm) (ro) */
44 long jitter; /* pps jitter (us) (ro) */
45 int shift; /* interval duration (s) (shift) (ro) */
46 long stabil; /* pps stability (scaled ppm) (ro) */
47 long jitcnt; /* jitter limit exceeded (ro) */
48 long calcnt; /* calibration intervals (ro) */
49 long errcnt; /* calibration errors (ro) */
50 long stbcnt; /* stability limit exceeded (ro) */
51
52 int :32; int :32; int :32; int :32;
53 int :32; int :32; int :32; int :32;
54 int :32; int :32; int :32; int :32;
55};
56
57int
58attribute_compat_text_section
59__adjtime_tv32 (const struct __timeval32 *itv, struct __timeval32 *otv)
60{
61 struct timeval itv64 = valid_timeval32_to_timeval (*itv);
62 struct timeval otv64;
63
64 if (__adjtime (&itv64, &otv64) == -1)
65 return -1;
66
67 *otv = valid_timeval_to_timeval32 (otv64);
68 return 0;
69}
70
71int
72attribute_compat_text_section
73__adjtimex_tv32 (struct timex32 *tx)
74{
75 struct timex tx64;
76 memset (&tx64, 0, sizeof tx64);
77 tx64.modes = tx->modes;
78 tx64.offset = tx->offset;
79 tx64.freq = tx->freq;
80 tx64.maxerror = tx->maxerror;
81 tx64.esterror = tx->esterror;
82 tx64.status = tx->status;
83 tx64.constant = tx->constant;
84 tx64.precision = tx->precision;
85 tx64.tolerance = tx->tolerance;
86 tx64.tick = tx->tick;
87 tx64.ppsfreq = tx->ppsfreq;
88 tx64.jitter = tx->jitter;
89 tx64.shift = tx->shift;
90 tx64.stabil = tx->stabil;
91 tx64.jitcnt = tx->jitcnt;
92 tx64.calcnt = tx->calcnt;
93 tx64.errcnt = tx->errcnt;
94 tx64.stbcnt = tx->stbcnt;
95 tx64.time = valid_timeval32_to_timeval (tx->time);
96
97 int status = __adjtimex (&tx64);
98 if (status < 0)
99 return status;
100
101 memset (tx, 0, sizeof *tx);
102 tx->modes = tx64.modes;
103 tx->offset = tx64.offset;
104 tx->freq = tx64.freq;
105 tx->maxerror = tx64.maxerror;
106 tx->esterror = tx64.esterror;
107 tx->status = tx64.status;
108 tx->constant = tx64.constant;
109 tx->precision = tx64.precision;
110 tx->tolerance = tx64.tolerance;
111 tx->tick = tx64.tick;
112 tx->ppsfreq = tx64.ppsfreq;
113 tx->jitter = tx64.jitter;
114 tx->shift = tx64.shift;
115 tx->stabil = tx64.stabil;
116 tx->jitcnt = tx64.jitcnt;
117 tx->calcnt = tx64.calcnt;
118 tx->errcnt = tx64.errcnt;
119 tx->stbcnt = tx64.stbcnt;
120 tx->time = valid_timeval_to_timeval32 (tx64.time);
121
122 return status;
123}
124
125strong_alias (__adjtimex_tv32, __adjtimex_tv32_1);
126strong_alias (__adjtimex_tv32, __adjtimex_tv32_2);
127compat_symbol (libc, __adjtimex_tv32_1, __adjtimex, GLIBC_2_0);
128compat_symbol (libc, __adjtimex_tv32_2, adjtimex, GLIBC_2_0);
129compat_symbol (libc, __adjtime_tv32, adjtime, GLIBC_2_0);
130
131#endif /* SHLIB_COMPAT */
132

source code of glibc/sysdeps/unix/sysv/linux/alpha/osf_adjtime.c