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-rw-r--r--util-linux/hwclock.c109
1 files changed, 41 insertions, 68 deletions
diff --git a/util-linux/hwclock.c b/util-linux/hwclock.c
index 6f3411a38..e62a64553 100644
--- a/util-linux/hwclock.c
+++ b/util-linux/hwclock.c
@@ -21,19 +21,19 @@
21*/ 21*/
22 22
23 23
24#include <sys/ioctl.h>
25#include <sys/time.h>
24#include <sys/utsname.h> 26#include <sys/utsname.h>
25#include <stdlib.h>
26#include <unistd.h>
27#include <syslog.h>
28#include <string.h>
29#include <ctype.h> 27#include <ctype.h>
30#include <fcntl.h> 28#include <fcntl.h>
31#include <sys/time.h> 29#include <getopt.h>
30#include <stdlib.h>
31#include <string.h>
32#include <syslog.h>
32#include <time.h> 33#include <time.h>
33#include <sys/ioctl.h> 34#include <unistd.h>
34#include "busybox.h" 35#include "busybox.h"
35 36
36
37/* Copied from linux/rtc.h to eliminate the kernel dependancy */ 37/* Copied from linux/rtc.h to eliminate the kernel dependancy */
38struct linux_rtc_time { 38struct linux_rtc_time {
39 int tm_sec; 39 int tm_sec;
@@ -47,28 +47,16 @@ struct linux_rtc_time {
47 int tm_isdst; 47 int tm_isdst;
48}; 48};
49 49
50
51#define RTC_SET_TIME _IOW('p', 0x0a, struct linux_rtc_time) /* Set RTC time */ 50#define RTC_SET_TIME _IOW('p', 0x0a, struct linux_rtc_time) /* Set RTC time */
52#define RTC_RD_TIME _IOR('p', 0x09, struct linux_rtc_time) /* Read RTC time */ 51#define RTC_RD_TIME _IOR('p', 0x09, struct linux_rtc_time) /* Read RTC time */
53 52
54
55#ifdef CONFIG_FEATURE_HWCLOCK_LONGOPTIONS 53#ifdef CONFIG_FEATURE_HWCLOCK_LONGOPTIONS
56# ifndef _GNU_SOURCE 54# ifndef _GNU_SOURCE
57# define _GNU_SOURCE 55# define _GNU_SOURCE
58# endif 56# endif
59#endif 57#endif
60 58
61#include <getopt.h> 59static time_t read_rtc(int utc)
62
63
64enum OpMode {
65 SHOW,
66 SYSTOHC,
67 HCTOSYS
68};
69
70
71time_t read_rtc ( int utc )
72{ 60{
73 int rtc; 61 int rtc;
74 struct tm tm; 62 struct tm tm;
@@ -104,7 +92,7 @@ time_t read_rtc ( int utc )
104 return t; 92 return t;
105} 93}
106 94
107void write_rtc ( time_t t, int utc ) 95static void write_rtc(time_t t, int utc)
108{ 96{
109 int rtc; 97 int rtc;
110 struct tm tm; 98 struct tm tm;
@@ -123,7 +111,7 @@ void write_rtc ( time_t t, int utc )
123 close ( rtc ); 111 close ( rtc );
124} 112}
125 113
126int show_clock ( int utc ) 114static int show_clock(int utc)
127{ 115{
128 struct tm *ptm; 116 struct tm *ptm;
129 time_t t; 117 time_t t;
@@ -142,7 +130,7 @@ int show_clock ( int utc )
142 return 0; 130 return 0;
143} 131}
144 132
145int to_sys_clock ( int utc ) 133static int to_sys_clock(int utc)
146{ 134{
147 struct timeval tv = { 0, 0 }; 135 struct timeval tv = { 0, 0 };
148 const struct timezone tz = { timezone/60 - 60*daylight, 0 }; 136 const struct timezone tz = { timezone/60 - 60*daylight, 0 };
@@ -155,7 +143,7 @@ int to_sys_clock ( int utc )
155 return 0; 143 return 0;
156} 144}
157 145
158int from_sys_clock ( int utc ) 146static int from_sys_clock(int utc)
159{ 147{
160 struct timeval tv = { 0, 0 }; 148 struct timeval tv = { 0, 0 };
161 struct timezone tz = { 0, 0 }; 149 struct timezone tz = { 0, 0 };
@@ -168,7 +156,7 @@ int from_sys_clock ( int utc )
168} 156}
169 157
170 158
171int check_utc ( void ) 159static int check_utc(void)
172{ 160{
173 int utc = 0; 161 int utc = 0;
174 FILE *f = fopen ( "/var/lib/hwclock/adjtime", "r" ); 162 FILE *f = fopen ( "/var/lib/hwclock/adjtime", "r" );
@@ -194,63 +182,48 @@ int check_utc ( void )
194 return utc; 182 return utc;
195} 183}
196 184
185#define HWCLOCK_OPT_LOCALTIME 1
186#define HWCLOCK_OPT_UTC 8
187#define HWCLOCK_OPT_SHOW 2
188#define HWCLOCK_OPT_HCTOSYS 4
189#define HWCLOCK_OPT_SYSTOHC 16
190
197extern int hwclock_main ( int argc, char **argv ) 191extern int hwclock_main ( int argc, char **argv )
198{ 192{
199 int opt; 193 unsigned long opt;
200 enum OpMode mode = SHOW;
201 int utc = 0; 194 int utc = 0;
202 int utc_arg = 0;
203 195
204#ifdef CONFIG_FEATURE_HWCLOCK_LONGOPTIONS 196#ifdef CONFIG_FEATURE_HWCLOCK_LONGOPTIONS
205 struct option long_options[] = { 197static const struct option hwclock_long_options[] = {
206 { "show", 0, 0, 'r' },
207 { "utc", 0, 0, 'u' },
208 { "localtime", 0, 0, 'l' }, 198 { "localtime", 0, 0, 'l' },
199 { "utc", 0, 0, 'u' },
200 { "show", 0, 0, 'r' },
209 { "hctosys", 0, 0, 's' }, 201 { "hctosys", 0, 0, 's' },
210 { "systohc", 0, 0, 'w' }, 202 { "systohc", 0, 0, 'w' },
211 { 0, 0, 0, 0 } 203 { 0, 0, 0, 0 }
212 }; 204 };
213 205 bb_applet_long_options = hwclock_long_options;
214 while (( opt = getopt_long ( argc, argv, "rwsul", long_options, 0 )) != EOF ) {
215#else
216 while (( opt = getopt ( argc, argv, "rwsul" )) != EOF ) {
217#endif 206#endif
218 switch ( opt ) { 207
219 case 'r': 208 bb_opt_complementaly = "r~ws:w~rs:s~wr";
220 mode = SHOW; 209 opt = bb_getopt_ulflags(argc, argv, "lursw");
221 break; 210 /* Check only one mode was given */
222 case 'w': 211 if(opt & 0x80000000UL) {
223 mode = SYSTOHC; 212 bb_show_usage();
224 break;
225 case 's':
226 mode = HCTOSYS;
227 break;
228 case 'u':
229 utc = 1;
230 utc_arg = 1;
231 break;
232 case 'l': // -l is not supported by the normal hwclock (only --localtime)
233 utc = 0;
234 utc_arg = 1;
235 break;
236 default:
237 bb_show_usage();
238 break;
239 }
240 } 213 }
241 214
242 if ( !utc_arg ) 215 /* If -u or -l wasnt give check if we are using utc */
243 utc = check_utc ( ); 216 if ((opt & (HWCLOCK_OPT_UTC | HWCLOCK_OPT_LOCALTIME)) == 0) {
244 217 utc = check_utc();
245 switch ( mode ) { 218 }
246 case SYSTOHC:
247 return from_sys_clock ( utc );
248 219
249 case HCTOSYS: 220 if (opt & HWCLOCK_OPT_HCTOSYS) {
250 return to_sys_clock ( utc ); 221 return to_sys_clock ( utc );
251 222 }
252 case SHOW: 223 else if (opt & HWCLOCK_OPT_SYSTOHC) {
253 default: 224 return from_sys_clock ( utc );
225 } else {
226 /* default HWCLOCK_OPT_SHOW */
254 return show_clock ( utc ); 227 return show_clock ( utc );
255 } 228 }
256} 229}
generated by cgit v1.2.3-55-g6feb (git 2.39.1) at 2025-04-03 07:06:28 +0000