[821] | 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 "busybox.h"
|
---|
| 15 | #include <stdio.h>
|
---|
| 16 | #include <sys/types.h>
|
---|
| 17 | #include <stdlib.h>
|
---|
| 18 | #include <unistd.h>
|
---|
| 19 | #include <sys/timex.h>
|
---|
| 20 |
|
---|
| 21 | static const struct {int bit; const char *name;} statlist[] = {
|
---|
| 22 | { STA_PLL, "PLL" },
|
---|
| 23 | { STA_PPSFREQ, "PPSFREQ" },
|
---|
| 24 | { STA_PPSTIME, "PPSTIME" },
|
---|
| 25 | { STA_FLL, "FFL" },
|
---|
| 26 | { STA_INS, "INS" },
|
---|
| 27 | { STA_DEL, "DEL" },
|
---|
| 28 | { STA_UNSYNC, "UNSYNC" },
|
---|
| 29 | { STA_FREQHOLD, "FREQHOLD" },
|
---|
| 30 | { STA_PPSSIGNAL, "PPSSIGNAL" },
|
---|
| 31 | { STA_PPSJITTER, "PPSJITTER" },
|
---|
| 32 | { STA_PPSWANDER, "PPSWANDER" },
|
---|
| 33 | { STA_PPSERROR, "PPSERROR" },
|
---|
| 34 | { STA_CLOCKERR, "CLOCKERR" },
|
---|
| 35 | { 0, NULL } };
|
---|
| 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 | int adjtimex_main(int argc, char **argv)
|
---|
| 46 | {
|
---|
| 47 | struct timex txc;
|
---|
| 48 | int quiet=0;
|
---|
| 49 | int c, i, ret, sep;
|
---|
| 50 | const char *descript;
|
---|
| 51 | txc.modes=0;
|
---|
| 52 | for (;;) {
|
---|
| 53 | c = getopt( argc, argv, "qo:f:p:t:");
|
---|
| 54 | if (c == EOF) break;
|
---|
| 55 | switch (c) {
|
---|
| 56 | case 'q':
|
---|
| 57 | quiet=1;
|
---|
| 58 | break;
|
---|
| 59 | case 'o':
|
---|
| 60 | txc.offset = atoi(optarg);
|
---|
| 61 | txc.modes |= ADJ_OFFSET_SINGLESHOT;
|
---|
| 62 | break;
|
---|
| 63 | case 'f':
|
---|
| 64 | txc.freq = atoi(optarg);
|
---|
| 65 | txc.modes |= ADJ_FREQUENCY;
|
---|
| 66 | break;
|
---|
| 67 | case 'p':
|
---|
| 68 | txc.constant = atoi(optarg);
|
---|
| 69 | txc.modes |= ADJ_TIMECONST;
|
---|
| 70 | break;
|
---|
| 71 | case 't':
|
---|
| 72 | txc.tick = atoi(optarg);
|
---|
| 73 | txc.modes |= ADJ_TICK;
|
---|
| 74 | break;
|
---|
| 75 | default:
|
---|
| 76 | bb_show_usage();
|
---|
| 77 | exit(1);
|
---|
| 78 | }
|
---|
| 79 | }
|
---|
| 80 | if (argc != optind) { /* no valid non-option parameters */
|
---|
| 81 | bb_show_usage();
|
---|
| 82 | exit(1);
|
---|
| 83 | }
|
---|
| 84 |
|
---|
| 85 | ret = adjtimex(&txc);
|
---|
| 86 |
|
---|
| 87 | if (ret < 0) perror("adjtimex");
|
---|
| 88 |
|
---|
| 89 | if (!quiet && ret>=0) {
|
---|
| 90 | printf(
|
---|
| 91 | " mode: %d\n"
|
---|
| 92 | "-o offset: %ld\n"
|
---|
| 93 | "-f frequency: %ld\n"
|
---|
| 94 | " maxerror: %ld\n"
|
---|
| 95 | " esterror: %ld\n"
|
---|
| 96 | " status: %d ( ",
|
---|
| 97 | txc.modes, txc.offset, txc.freq, txc.maxerror,
|
---|
| 98 | txc.esterror, txc.status);
|
---|
| 99 |
|
---|
| 100 | /* representative output of next code fragment:
|
---|
| 101 | "PLL | PPSTIME" */
|
---|
| 102 | sep=0;
|
---|
| 103 | for (i=0; statlist[i].name; i++) {
|
---|
| 104 | if (txc.status & statlist[i].bit) {
|
---|
| 105 | if (sep) fputs(" | ",stdout);
|
---|
| 106 | fputs(statlist[i].name,stdout);
|
---|
| 107 | sep=1;
|
---|
| 108 | }
|
---|
| 109 | }
|
---|
| 110 |
|
---|
| 111 | descript = "error";
|
---|
| 112 | if (ret >= 0 && ret <= 5) descript = ret_code_descript[ret];
|
---|
| 113 | printf(" )\n"
|
---|
| 114 | "-p timeconstant: %ld\n"
|
---|
| 115 | " precision: %ld\n"
|
---|
| 116 | " tolerance: %ld\n"
|
---|
| 117 | "-t tick: %ld\n"
|
---|
| 118 | " time.tv_sec: %ld\n"
|
---|
| 119 | " time.tv_usec: %ld\n"
|
---|
| 120 | " return value: %d (%s)\n",
|
---|
| 121 | txc.constant,
|
---|
| 122 | txc.precision, txc.tolerance, txc.tick,
|
---|
| 123 | (long)txc.time.tv_sec, (long)txc.time.tv_usec, ret, descript);
|
---|
| 124 | }
|
---|
| 125 | return (ret<0);
|
---|
| 126 | }
|
---|