1 | /* vi: set sw=4 ts=4: */
|
---|
2 | /*
|
---|
3 | * adjtimex.c - read, and possibly modify, the Linux kernel `timex' variables.
|
---|
4 | *
|
---|
5 | * Originally written: October 1997
|
---|
6 | * Last hack: March 2001
|
---|
7 | * Copyright 1997, 2000, 2001 Larry Doolittle <LRDoolittle@lbl.gov>
|
---|
8 | *
|
---|
9 | * busyboxed 20 March 2001, Larry Doolittle <ldoolitt@recycle.lbl.gov>
|
---|
10 | *
|
---|
11 | * Licensed under GPLv2 or later, see file License in this tarball for details.
|
---|
12 | */
|
---|
13 |
|
---|
14 | #include "libbb.h"
|
---|
15 | #include <sys/timex.h>
|
---|
16 |
|
---|
17 | static const struct {
|
---|
18 | int bit;
|
---|
19 | const char *name;
|
---|
20 | } statlist[] = {
|
---|
21 | { STA_PLL, "PLL" },
|
---|
22 | { STA_PPSFREQ, "PPSFREQ" },
|
---|
23 | { STA_PPSTIME, "PPSTIME" },
|
---|
24 | { STA_FLL, "FFL" },
|
---|
25 | { STA_INS, "INS" },
|
---|
26 | { STA_DEL, "DEL" },
|
---|
27 | { STA_UNSYNC, "UNSYNC" },
|
---|
28 | { STA_FREQHOLD, "FREQHOLD" },
|
---|
29 | { STA_PPSSIGNAL, "PPSSIGNAL" },
|
---|
30 | { STA_PPSJITTER, "PPSJITTER" },
|
---|
31 | { STA_PPSWANDER, "PPSWANDER" },
|
---|
32 | { STA_PPSERROR, "PPSERROR" },
|
---|
33 | { STA_CLOCKERR, "CLOCKERR" },
|
---|
34 | { 0, NULL }
|
---|
35 | };
|
---|
36 |
|
---|
37 | static const char *const ret_code_descript[] = {
|
---|
38 | "clock synchronized",
|
---|
39 | "insert leap second",
|
---|
40 | "delete leap second",
|
---|
41 | "leap second in progress",
|
---|
42 | "leap second has occurred",
|
---|
43 | "clock not synchronized"
|
---|
44 | };
|
---|
45 |
|
---|
46 | int adjtimex_main(int argc, char **argv);
|
---|
47 | int adjtimex_main(int argc, char **argv)
|
---|
48 | {
|
---|
49 | enum {
|
---|
50 | OPT_quiet = 0x1
|
---|
51 | };
|
---|
52 | unsigned opt;
|
---|
53 | char *opt_o, *opt_f, *opt_p, *opt_t;
|
---|
54 | struct timex txc;
|
---|
55 | int i, ret, sep;
|
---|
56 | const char *descript;
|
---|
57 | txc.modes=0;
|
---|
58 |
|
---|
59 | opt = getopt32(argv, "qo:f:p:t:",
|
---|
60 | &opt_o, &opt_f, &opt_p, &opt_t);
|
---|
61 | //if (opt & 0x1) // -q
|
---|
62 | if (opt & 0x2) { // -o
|
---|
63 | txc.offset = xatol(opt_o);
|
---|
64 | txc.modes |= ADJ_OFFSET_SINGLESHOT;
|
---|
65 | }
|
---|
66 | if (opt & 0x4) { // -f
|
---|
67 | txc.freq = xatol(opt_f);
|
---|
68 | txc.modes |= ADJ_FREQUENCY;
|
---|
69 | }
|
---|
70 | if (opt & 0x8) { // -p
|
---|
71 | txc.constant = xatol(opt_p);
|
---|
72 | txc.modes |= ADJ_TIMECONST;
|
---|
73 | }
|
---|
74 | if (opt & 0x10) { // -t
|
---|
75 | txc.tick = xatol(opt_t);
|
---|
76 | txc.modes |= ADJ_TICK;
|
---|
77 | }
|
---|
78 | if (argc != optind) { /* no valid non-option parameters */
|
---|
79 | bb_show_usage();
|
---|
80 | }
|
---|
81 |
|
---|
82 | ret = adjtimex(&txc);
|
---|
83 |
|
---|
84 | if (ret < 0) perror("adjtimex");
|
---|
85 |
|
---|
86 | if (!(opt & OPT_quiet) && ret>=0) {
|
---|
87 | printf(
|
---|
88 | " mode: %d\n"
|
---|
89 | "-o offset: %ld\n"
|
---|
90 | "-f frequency: %ld\n"
|
---|
91 | " maxerror: %ld\n"
|
---|
92 | " esterror: %ld\n"
|
---|
93 | " status: %d ( ",
|
---|
94 | txc.modes, txc.offset, txc.freq, txc.maxerror,
|
---|
95 | txc.esterror, txc.status);
|
---|
96 |
|
---|
97 | /* representative output of next code fragment:
|
---|
98 | "PLL | PPSTIME" */
|
---|
99 | sep=0;
|
---|
100 | for (i=0; statlist[i].name; i++) {
|
---|
101 | if (txc.status & statlist[i].bit) {
|
---|
102 | if (sep) fputs(" | ",stdout);
|
---|
103 | fputs(statlist[i].name,stdout);
|
---|
104 | sep=1;
|
---|
105 | }
|
---|
106 | }
|
---|
107 |
|
---|
108 | descript = "error";
|
---|
109 | if (ret >= 0 && ret <= 5) descript = ret_code_descript[ret];
|
---|
110 | printf(" )\n"
|
---|
111 | "-p timeconstant: %ld\n"
|
---|
112 | " precision: %ld\n"
|
---|
113 | " tolerance: %ld\n"
|
---|
114 | "-t tick: %ld\n"
|
---|
115 | " time.tv_sec: %ld\n"
|
---|
116 | " time.tv_usec: %ld\n"
|
---|
117 | " return value: %d (%s)\n",
|
---|
118 | txc.constant,
|
---|
119 | txc.precision, txc.tolerance, txc.tick,
|
---|
120 | (long)txc.time.tv_sec, (long)txc.time.tv_usec, ret, descript);
|
---|
121 | }
|
---|
122 | return (ret<0);
|
---|
123 | }
|
---|