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    Contents of /trunk/mkinitrd-magellan/busybox/miscutils/adjtimex.c

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    Revision 532 - (show annotations) (download)
    Sat Sep 1 22:45:15 2007 UTC (16 years, 8 months ago) by niro
    File MIME type: text/plain
    File size: 2956 byte(s) 
    -import if magellan mkinitrd; it is a fork of redhats mkinitrd-5.0.8 with all magellan patches and features; deprecates magellan-src/mkinitrd
    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 <sys/timex.h>
    16
    17 static const struct {int bit; const char *name;} statlist[] = {
    18 { STA_PLL, "PLL" },
    19 { STA_PPSFREQ, "PPSFREQ" },
    20 { STA_PPSTIME, "PPSTIME" },
    21 { STA_FLL, "FFL" },
    22 { STA_INS, "INS" },
    23 { STA_DEL, "DEL" },
    24 { STA_UNSYNC, "UNSYNC" },
    25 { STA_FREQHOLD, "FREQHOLD" },
    26 { STA_PPSSIGNAL, "PPSSIGNAL" },
    27 { STA_PPSJITTER, "PPSJITTER" },
    28 { STA_PPSWANDER, "PPSWANDER" },
    29 { STA_PPSERROR, "PPSERROR" },
    30 { STA_CLOCKERR, "CLOCKERR" },
    31 { 0, NULL } };
    32
    33 static const char * const ret_code_descript[] = {
    34 "clock synchronized",
    35 "insert leap second",
    36 "delete leap second",
    37 "leap second in progress",
    38 "leap second has occurred",
    39 "clock not synchronized" };
    40
    41 int adjtimex_main(int argc, char **argv)
    42 {
    43 enum {
    44 OPT_quiet = 0x1
    45 };
    46 unsigned opt;
    47 char *opt_o, *opt_f, *opt_p, *opt_t;
    48 struct timex txc;
    49 int i, ret, sep;
    50 const char *descript;
    51 txc.modes=0;
    52
    53 opt = getopt32(argc, argv, "qo:f:p:t:",
    54 &opt_o, &opt_f, &opt_p, &opt_t);
    55 //if (opt & 0x1) // -q
    56 if (opt & 0x2) { // -o
    57 txc.offset = xatoi(opt_o);
    58 txc.modes |= ADJ_OFFSET_SINGLESHOT;
    59 }
    60 if (opt & 0x4) { // -f
    61 txc.freq = xatou(opt_f);
    62 txc.modes |= ADJ_FREQUENCY;
    63 }
    64 if (opt & 0x8) { // -p
    65 txc.constant = xatoi(opt_p);
    66 txc.modes |= ADJ_TIMECONST;
    67 }
    68 if (opt & 0x10) { // -t
    69 txc.tick = xatoi(opt_t);
    70 txc.modes |= ADJ_TICK;
    71 }
    72 if (argc != optind) { /* no valid non-option parameters */
    73 bb_show_usage();
    74 }
    75
    76 ret = adjtimex(&txc);
    77
    78 if (ret < 0) perror("adjtimex");
    79
    80 if (!(opt & OPT_quiet) && ret>=0) {
    81 printf(
    82 " mode: %d\n"
    83 "-o offset: %ld\n"
    84 "-f frequency: %ld\n"
    85 " maxerror: %ld\n"
    86 " esterror: %ld\n"
    87 " status: %d ( ",
    88 txc.modes, txc.offset, txc.freq, txc.maxerror,
    89 txc.esterror, txc.status);
    90
    91 /* representative output of next code fragment:
    92 "PLL | PPSTIME" */
    93 sep=0;
    94 for (i=0; statlist[i].name; i++) {
    95 if (txc.status & statlist[i].bit) {
    96 if (sep) fputs(" | ",stdout);
    97 fputs(statlist[i].name,stdout);
    98 sep=1;
    99 }
    100 }
    101
    102 descript = "error";
    103 if (ret >= 0 && ret <= 5) descript = ret_code_descript[ret];
    104 printf(" )\n"
    105 "-p timeconstant: %ld\n"
    106 " precision: %ld\n"
    107 " tolerance: %ld\n"
    108 "-t tick: %ld\n"
    109 " time.tv_sec: %ld\n"
    110 " time.tv_usec: %ld\n"
    111 " return value: %d (%s)\n",
    112 txc.constant,
    113 txc.precision, txc.tolerance, txc.tick,
    114 (long)txc.time.tv_sec, (long)txc.time.tv_usec, ret, descript);
    115 }
    116 return (ret<0);
    117 }