Contents of /tags/mkinitrd-6_1_9/busybox/miscutils/adjtimex.c
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Wed Oct 28 00:26:51 2009 UTC (14 years, 11 months ago) by niro
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Wed Oct 28 00:26:51 2009 UTC (14 years, 11 months ago) by niro
File MIME type: text/plain
File size: 3081 byte(s)
tagged 'mkinitrd-6_1_9'
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 uint16_t statlist_bit[] = { |
18 | STA_PLL, |
19 | STA_PPSFREQ, |
20 | STA_PPSTIME, |
21 | STA_FLL, |
22 | STA_INS, |
23 | STA_DEL, |
24 | STA_UNSYNC, |
25 | STA_FREQHOLD, |
26 | STA_PPSSIGNAL, |
27 | STA_PPSJITTER, |
28 | STA_PPSWANDER, |
29 | STA_PPSERROR, |
30 | STA_CLOCKERR, |
31 | 0 |
32 | }; |
33 | static const char statlist_name[] = |
34 | "PLL" "\0" |
35 | "PPSFREQ" "\0" |
36 | "PPSTIME" "\0" |
37 | "FFL" "\0" |
38 | "INS" "\0" |
39 | "DEL" "\0" |
40 | "UNSYNC" "\0" |
41 | "FREQHOLD" "\0" |
42 | "PPSSIGNAL" "\0" |
43 | "PPSJITTER" "\0" |
44 | "PPSWANDER" "\0" |
45 | "PPSERROR" "\0" |
46 | "CLOCKERR" |
47 | ; |
48 | |
49 | static const char ret_code_descript[] = |
50 | "clock synchronized" "\0" |
51 | "insert leap second" "\0" |
52 | "delete leap second" "\0" |
53 | "leap second in progress" "\0" |
54 | "leap second has occurred" "\0" |
55 | "clock not synchronized" |
56 | ; |
57 | |
58 | int adjtimex_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
59 | int adjtimex_main(int argc, char **argv) |
60 | { |
61 | enum { |
62 | OPT_quiet = 0x1 |
63 | }; |
64 | unsigned opt; |
65 | char *opt_o, *opt_f, *opt_p, *opt_t; |
66 | struct timex txc; |
67 | int i, ret; |
68 | const char *descript; |
69 | txc.modes=0; |
70 | |
71 | opt = getopt32(argv, "qo:f:p:t:", |
72 | &opt_o, &opt_f, &opt_p, &opt_t); |
73 | //if (opt & 0x1) // -q |
74 | if (opt & 0x2) { // -o |
75 | txc.offset = xatol(opt_o); |
76 | txc.modes |= ADJ_OFFSET_SINGLESHOT; |
77 | } |
78 | if (opt & 0x4) { // -f |
79 | txc.freq = xatol(opt_f); |
80 | txc.modes |= ADJ_FREQUENCY; |
81 | } |
82 | if (opt & 0x8) { // -p |
83 | txc.constant = xatol(opt_p); |
84 | txc.modes |= ADJ_TIMECONST; |
85 | } |
86 | if (opt & 0x10) { // -t |
87 | txc.tick = xatol(opt_t); |
88 | txc.modes |= ADJ_TICK; |
89 | } |
90 | if (argc != optind) { /* no valid non-option parameters */ |
91 | bb_show_usage(); |
92 | } |
93 | |
94 | ret = adjtimex(&txc); |
95 | |
96 | if (ret < 0) { |
97 | bb_perror_nomsg_and_die(); |
98 | } |
99 | |
100 | if (!(opt & OPT_quiet)) { |
101 | int sep; |
102 | const char *name; |
103 | |
104 | printf( |
105 | " mode: %d\n" |
106 | "-o offset: %ld\n" |
107 | "-f frequency: %ld\n" |
108 | " maxerror: %ld\n" |
109 | " esterror: %ld\n" |
110 | " status: %d (", |
111 | txc.modes, txc.offset, txc.freq, txc.maxerror, |
112 | txc.esterror, txc.status); |
113 | |
114 | /* representative output of next code fragment: |
115 | "PLL | PPSTIME" */ |
116 | name = statlist_name; |
117 | sep = 0; |
118 | for (i = 0; statlist_bit[i]; i++) { |
119 | if (txc.status & statlist_bit[i]) { |
120 | if (sep) |
121 | fputs(" | ", stdout); |
122 | fputs(name, stdout); |
123 | sep = 1; |
124 | } |
125 | name += strlen(name) + 1; |
126 | } |
127 | |
128 | descript = "error"; |
129 | if (ret <= 5) |
130 | descript = nth_string(ret_code_descript, ret); |
131 | printf(")\n" |
132 | "-p timeconstant: %ld\n" |
133 | " precision: %ld\n" |
134 | " tolerance: %ld\n" |
135 | "-t tick: %ld\n" |
136 | " time.tv_sec: %ld\n" |
137 | " time.tv_usec: %ld\n" |
138 | " return value: %d (%s)\n", |
139 | txc.constant, |
140 | txc.precision, txc.tolerance, txc.tick, |
141 | (long)txc.time.tv_sec, (long)txc.time.tv_usec, ret, descript); |
142 | } |
143 | |
144 | return 0; |
145 | } |