|
@@ -10,14 +10,7 @@
|
|
|
|
|
|
#include <sys/ioctl.h>
|
|
|
#include <sys/utsname.h>
|
|
|
-#include <ctype.h>
|
|
|
-#include <fcntl.h>
|
|
|
#include <getopt.h>
|
|
|
-#include <stdlib.h>
|
|
|
-#include <string.h>
|
|
|
-#include <syslog.h>
|
|
|
-#include <time.h>
|
|
|
-#include <unistd.h>
|
|
|
#include "busybox.h"
|
|
|
|
|
|
/* Copied from linux/rtc.h to eliminate the kernel dependency */
|
|
@@ -42,59 +35,62 @@ struct linux_rtc_time {
|
|
|
# endif
|
|
|
#endif
|
|
|
|
|
|
-static time_t read_rtc(int utc)
|
|
|
+static int xopen_rtc(int flags)
|
|
|
{
|
|
|
int rtc;
|
|
|
+ rtc = open("/dev/rtc", flags);
|
|
|
+ if (rtc < 0) {
|
|
|
+ rtc = open("/dev/misc/rtc", flags);
|
|
|
+ if (rtc < 0)
|
|
|
+ bb_perror_msg_and_die("cannot access RTC");
|
|
|
+ }
|
|
|
+ return rtc;
|
|
|
+}
|
|
|
+
|
|
|
+static time_t read_rtc(int utc)
|
|
|
+{
|
|
|
struct tm tm;
|
|
|
char *oldtz = 0;
|
|
|
time_t t = 0;
|
|
|
+ int rtc = xopen_rtc(O_RDONLY);
|
|
|
|
|
|
- if (( rtc = open ( "/dev/rtc", O_RDONLY )) < 0 ) {
|
|
|
- if (( rtc = open ( "/dev/misc/rtc", O_RDONLY )) < 0 )
|
|
|
- bb_perror_msg_and_die ( "cannot access RTC" );
|
|
|
- }
|
|
|
- memset ( &tm, 0, sizeof( struct tm ));
|
|
|
- if ( ioctl ( rtc, RTC_RD_TIME, &tm ) < 0 )
|
|
|
- bb_perror_msg_and_die ( "cannot read time from RTC" );
|
|
|
+ memset(&tm, 0, sizeof(struct tm));
|
|
|
+ if (ioctl(rtc, RTC_RD_TIME, &tm) < 0 )
|
|
|
+ bb_perror_msg_and_die("cannot read time from RTC");
|
|
|
tm.tm_isdst = -1; /* not known */
|
|
|
|
|
|
- close ( rtc );
|
|
|
+ close(rtc);
|
|
|
|
|
|
- if ( utc ) {
|
|
|
- oldtz = getenv ( "TZ" );
|
|
|
- setenv ( "TZ", "UTC 0", 1 );
|
|
|
- tzset ( );
|
|
|
+ if (utc) {
|
|
|
+ oldtz = getenv("TZ");
|
|
|
+ setenv("TZ", "UTC 0", 1);
|
|
|
+ tzset();
|
|
|
}
|
|
|
|
|
|
- t = mktime ( &tm );
|
|
|
+ t = mktime(&tm);
|
|
|
|
|
|
- if ( utc ) {
|
|
|
- if ( oldtz )
|
|
|
- setenv ( "TZ", oldtz, 1 );
|
|
|
+ if (utc) {
|
|
|
+ if (oldtz)
|
|
|
+ setenv("TZ", oldtz, 1);
|
|
|
else
|
|
|
- unsetenv ( "TZ" );
|
|
|
- tzset ( );
|
|
|
+ unsetenv("TZ");
|
|
|
+ tzset();
|
|
|
}
|
|
|
return t;
|
|
|
}
|
|
|
|
|
|
static void write_rtc(time_t t, int utc)
|
|
|
{
|
|
|
- int rtc;
|
|
|
struct tm tm;
|
|
|
+ int rtc = xopen_rtc(O_WRONLY);
|
|
|
|
|
|
- if (( rtc = open ( "/dev/rtc", O_WRONLY )) < 0 ) {
|
|
|
- if (( rtc = open ( "/dev/misc/rtc", O_WRONLY )) < 0 )
|
|
|
- bb_perror_msg_and_die ( "cannot access RTC" );
|
|
|
- }
|
|
|
-
|
|
|
- tm = *( utc ? gmtime ( &t ) : localtime ( &t ));
|
|
|
+ tm = *(utc ? gmtime(&t) : localtime(&t));
|
|
|
tm.tm_isdst = 0;
|
|
|
|
|
|
- if ( ioctl ( rtc, RTC_SET_TIME, &tm ) < 0 )
|
|
|
- bb_perror_msg_and_die ( "cannot set the RTC time" );
|
|
|
+ if (ioctl(rtc, RTC_SET_TIME, &tm) < 0)
|
|
|
+ bb_perror_msg_and_die("cannot set the RTC time");
|
|
|
|
|
|
- close ( rtc );
|
|
|
+ close(rtc);
|
|
|
}
|
|
|
|
|
|
static int show_clock(int utc)
|
|
@@ -103,15 +99,15 @@ static int show_clock(int utc)
|
|
|
time_t t;
|
|
|
RESERVE_CONFIG_BUFFER(buffer, 64);
|
|
|
|
|
|
- t = read_rtc ( utc );
|
|
|
- ptm = localtime ( &t ); /* Sets 'tzname[]' */
|
|
|
+ t = read_rtc(utc);
|
|
|
+ ptm = localtime(&t); /* Sets 'tzname[]' */
|
|
|
|
|
|
- safe_strncpy ( buffer, ctime ( &t ), 64);
|
|
|
- if ( buffer [0] )
|
|
|
- buffer [strlen ( buffer ) - 1] = 0;
|
|
|
+ safe_strncpy(buffer, ctime(&t), 64);
|
|
|
+ if (buffer[0])
|
|
|
+ buffer[strlen(buffer) - 1] = 0;
|
|
|
|
|
|
- //printf ( "%s %.6f seconds %s\n", buffer, 0.0, utc ? "" : ( ptm-> tm_isdst ? tzname [1] : tzname [0] ));
|
|
|
- printf ( "%s %.6f seconds\n", buffer, 0.0 );
|
|
|
+ //printf("%s %.6f seconds %s\n", buffer, 0.0, utc ? "" : (ptm->tm_isdst ? tzname [1] : tzname [0]));
|
|
|
+ printf( "%s %.6f seconds\n", buffer, 0.0);
|
|
|
RELEASE_CONFIG_BUFFER(buffer);
|
|
|
|
|
|
return 0;
|
|
@@ -122,10 +118,10 @@ static int to_sys_clock(int utc)
|
|
|
struct timeval tv = { 0, 0 };
|
|
|
const struct timezone tz = { timezone/60 - 60*daylight, 0 };
|
|
|
|
|
|
- tv.tv_sec = read_rtc ( utc );
|
|
|
+ tv.tv_sec = read_rtc(utc);
|
|
|
|
|
|
- if ( settimeofday ( &tv, &tz ))
|
|
|
- bb_perror_msg_and_die ( "settimeofday() failed" );
|
|
|
+ if (settimeofday(&tv, &tz))
|
|
|
+ bb_perror_msg_and_die("settimeofday() failed");
|
|
|
|
|
|
return 0;
|
|
|
}
|
|
@@ -135,10 +131,10 @@ static int from_sys_clock(int utc)
|
|
|
struct timeval tv = { 0, 0 };
|
|
|
struct timezone tz = { 0, 0 };
|
|
|
|
|
|
- if ( gettimeofday ( &tv, &tz ))
|
|
|
- bb_perror_msg_and_die ( "gettimeofday() failed" );
|
|
|
+ if (gettimeofday(&tv, &tz))
|
|
|
+ bb_perror_msg_and_die("gettimeofday() failed");
|
|
|
|
|
|
- write_rtc ( tv.tv_sec, utc );
|
|
|
+ write_rtc(tv.tv_sec, utc);
|
|
|
return 0;
|
|
|
}
|
|
|
|
|
@@ -150,43 +146,43 @@ static int from_sys_clock(int utc)
|
|
|
static int check_utc(void)
|
|
|
{
|
|
|
int utc = 0;
|
|
|
- FILE *f = fopen ( ADJTIME_PATH, "r" );
|
|
|
+ FILE *f = fopen(ADJTIME_PATH, "r");
|
|
|
|
|
|
- if ( f ) {
|
|
|
+ if (f) {
|
|
|
RESERVE_CONFIG_BUFFER(buffer, 128);
|
|
|
|
|
|
- while ( fgets ( buffer, sizeof( buffer ), f )) {
|
|
|
- int len = strlen ( buffer );
|
|
|
+ while (fgets(buffer, sizeof(buffer), f)) {
|
|
|
+ int len = strlen(buffer);
|
|
|
|
|
|
- while ( len && isspace ( buffer [len - 1] ))
|
|
|
+ while (len && isspace(buffer[len - 1]))
|
|
|
len--;
|
|
|
|
|
|
- buffer [len] = 0;
|
|
|
+ buffer[len] = 0;
|
|
|
|
|
|
- if ( strncmp ( buffer, "UTC", 3 ) == 0 ) {
|
|
|
+ if (strncmp(buffer, "UTC", 3) == 0 ) {
|
|
|
utc = 1;
|
|
|
break;
|
|
|
}
|
|
|
}
|
|
|
- fclose ( f );
|
|
|
+ fclose(f);
|
|
|
RELEASE_CONFIG_BUFFER(buffer);
|
|
|
}
|
|
|
return utc;
|
|
|
}
|
|
|
|
|
|
-#define HWCLOCK_OPT_LOCALTIME 0x01
|
|
|
-#define HWCLOCK_OPT_UTC 0x02
|
|
|
-#define HWCLOCK_OPT_SHOW 0x04
|
|
|
-#define HWCLOCK_OPT_HCTOSYS 0x08
|
|
|
-#define HWCLOCK_OPT_SYSTOHC 0x10
|
|
|
+#define HWCLOCK_OPT_LOCALTIME 0x01
|
|
|
+#define HWCLOCK_OPT_UTC 0x02
|
|
|
+#define HWCLOCK_OPT_SHOW 0x04
|
|
|
+#define HWCLOCK_OPT_HCTOSYS 0x08
|
|
|
+#define HWCLOCK_OPT_SYSTOHC 0x10
|
|
|
|
|
|
-int hwclock_main ( int argc, char **argv )
|
|
|
+int hwclock_main(int argc, char **argv )
|
|
|
{
|
|
|
unsigned opt;
|
|
|
int utc;
|
|
|
|
|
|
#if ENABLE_FEATURE_HWCLOCK_LONG_OPTIONS
|
|
|
-static const struct option hwclock_long_options[] = {
|
|
|
+ static const struct option hwclock_long_options[] = {
|
|
|
{ "localtime", 0, 0, 'l' },
|
|
|
{ "utc", 0, 0, 'u' },
|
|
|
{ "show", 0, 0, 'r' },
|
|
@@ -196,7 +192,6 @@ static const struct option hwclock_long_options[] = {
|
|
|
};
|
|
|
applet_long_options = hwclock_long_options;
|
|
|
#endif
|
|
|
-
|
|
|
opt_complementary = "?:r--ws:w--rs:s--wr:l--u:u--l";
|
|
|
opt = getopt32(argc, argv, "lursw");
|
|
|
|
|
@@ -207,12 +202,12 @@ static const struct option hwclock_long_options[] = {
|
|
|
utc = check_utc();
|
|
|
|
|
|
if (opt & HWCLOCK_OPT_HCTOSYS) {
|
|
|
- return to_sys_clock ( utc );
|
|
|
+ return to_sys_clock(utc);
|
|
|
}
|
|
|
else if (opt & HWCLOCK_OPT_SYSTOHC) {
|
|
|
- return from_sys_clock ( utc );
|
|
|
+ return from_sys_clock(utc);
|
|
|
} else {
|
|
|
/* default HWCLOCK_OPT_SHOW */
|
|
|
- return show_clock ( utc );
|
|
|
+ return show_clock(utc);
|
|
|
}
|
|
|
}
|