/* vi: set sw=4 ts=4: */ /* * adjtimex.c - read, and possibly modify, the Linux kernel `timex' variables. * * Originally written: October 1997 * Last hack: March 2001 * Copyright 1997, 2000, 2001 Larry Doolittle <LRDoolittle@lbl.gov> * * busyboxed 20 March 2001, Larry Doolittle <ldoolitt@recycle.lbl.gov> * * Licensed under GPLv2 or later, see file License in this tarball for details. */ #include "busybox.h" #include <stdio.h> #include <sys/types.h> #include <stdlib.h> #include <unistd.h> #include <sys/timex.h> static const struct {int bit; const char *name;} statlist[] = { { STA_PLL, "PLL" }, { STA_PPSFREQ, "PPSFREQ" }, { STA_PPSTIME, "PPSTIME" }, { STA_FLL, "FFL" }, { STA_INS, "INS" }, { STA_DEL, "DEL" }, { STA_UNSYNC, "UNSYNC" }, { STA_FREQHOLD, "FREQHOLD" }, { STA_PPSSIGNAL, "PPSSIGNAL" }, { STA_PPSJITTER, "PPSJITTER" }, { STA_PPSWANDER, "PPSWANDER" }, { STA_PPSERROR, "PPSERROR" }, { STA_CLOCKERR, "CLOCKERR" }, { 0, NULL } }; static const char * const ret_code_descript[] = { "clock synchronized", "insert leap second", "delete leap second", "leap second in progress", "leap second has occurred", "clock not synchronized" }; int adjtimex_main(int argc, char **argv) { struct timex txc; int quiet=0; int c, i, ret, sep; const char *descript; txc.modes=0; for (;;) { c = getopt( argc, argv, "qo:f:p:t:"); if (c == EOF) break; switch (c) { case 'q': quiet=1; break; case 'o': txc.offset = atoi(optarg); txc.modes |= ADJ_OFFSET_SINGLESHOT; break; case 'f': txc.freq = atoi(optarg); txc.modes |= ADJ_FREQUENCY; break; case 'p': txc.constant = atoi(optarg); txc.modes |= ADJ_TIMECONST; break; case 't': txc.tick = atoi(optarg); txc.modes |= ADJ_TICK; break; default: bb_show_usage(); exit(1); } } if (argc != optind) { /* no valid non-option parameters */ bb_show_usage(); exit(1); } ret = adjtimex(&txc); if (ret < 0) perror("adjtimex"); if (!quiet && ret>=0) { printf( " mode: %d\n" "-o offset: %ld\n" "-f frequency: %ld\n" " maxerror: %ld\n" " esterror: %ld\n" " status: %d ( ", txc.modes, txc.offset, txc.freq, txc.maxerror, txc.esterror, txc.status); /* representative output of next code fragment: "PLL | PPSTIME" */ sep=0; for (i=0; statlist[i].name; i++) { if (txc.status & statlist[i].bit) { if (sep) fputs(" | ",stdout); fputs(statlist[i].name,stdout); sep=1; } } descript = "error"; if (ret >= 0 && ret <= 5) descript = ret_code_descript[ret]; printf(" )\n" "-p timeconstant: %ld\n" " precision: %ld\n" " tolerance: %ld\n" "-t tick: %ld\n" " time.tv_sec: %ld\n" " time.tv_usec: %ld\n" " return value: %d (%s)\n", txc.constant, txc.precision, txc.tolerance, txc.tick, (long)txc.time.tv_sec, (long)txc.time.tv_usec, ret, descript); } return (ret<0); }