diff options
Diffstat (limited to 'util-linux/hwclock.c')
| -rw-r--r-- | util-linux/hwclock.c | 109 |
1 files changed, 41 insertions, 68 deletions
diff --git a/util-linux/hwclock.c b/util-linux/hwclock.c index 6f3411a..e62a645 100644 --- a/util-linux/hwclock.c +++ b/util-linux/hwclock.c @@ -21,19 +21,19 @@ */ +#include <sys/ioctl.h> +#include <sys/time.h> #include <sys/utsname.h> -#include <stdlib.h> -#include <unistd.h> -#include <syslog.h> -#include <string.h> #include <ctype.h> #include <fcntl.h> -#include <sys/time.h> +#include <getopt.h> +#include <stdlib.h> +#include <string.h> +#include <syslog.h> #include <time.h> -#include <sys/ioctl.h> +#include <unistd.h> #include "busybox.h" - /* Copied from linux/rtc.h to eliminate the kernel dependancy */ struct linux_rtc_time { int tm_sec; @@ -47,28 +47,16 @@ struct linux_rtc_time { int tm_isdst; }; - #define RTC_SET_TIME _IOW('p', 0x0a, struct linux_rtc_time) /* Set RTC time */ #define RTC_RD_TIME _IOR('p', 0x09, struct linux_rtc_time) /* Read RTC time */ - #ifdef CONFIG_FEATURE_HWCLOCK_LONGOPTIONS # ifndef _GNU_SOURCE # define _GNU_SOURCE # endif #endif -#include <getopt.h> - - -enum OpMode { - SHOW, - SYSTOHC, - HCTOSYS -}; - - -time_t read_rtc ( int utc ) +static time_t read_rtc(int utc) { int rtc; struct tm tm; @@ -104,7 +92,7 @@ time_t read_rtc ( int utc ) return t; } -void write_rtc ( time_t t, int utc ) +static void write_rtc(time_t t, int utc) { int rtc; struct tm tm; @@ -123,7 +111,7 @@ void write_rtc ( time_t t, int utc ) close ( rtc ); } -int show_clock ( int utc ) +static int show_clock(int utc) { struct tm *ptm; time_t t; @@ -142,7 +130,7 @@ int show_clock ( int utc ) return 0; } -int to_sys_clock ( int utc ) +static int to_sys_clock(int utc) { struct timeval tv = { 0, 0 }; const struct timezone tz = { timezone/60 - 60*daylight, 0 }; @@ -155,7 +143,7 @@ int to_sys_clock ( int utc ) return 0; } -int from_sys_clock ( int utc ) +static int from_sys_clock(int utc) { struct timeval tv = { 0, 0 }; struct timezone tz = { 0, 0 }; @@ -168,7 +156,7 @@ int from_sys_clock ( int utc ) } -int check_utc ( void ) +static int check_utc(void) { int utc = 0; FILE *f = fopen ( "/var/lib/hwclock/adjtime", "r" ); @@ -194,63 +182,48 @@ int check_utc ( void ) return utc; } +#define HWCLOCK_OPT_LOCALTIME 1 +#define HWCLOCK_OPT_UTC 8 +#define HWCLOCK_OPT_SHOW 2 +#define HWCLOCK_OPT_HCTOSYS 4 +#define HWCLOCK_OPT_SYSTOHC 16 + extern int hwclock_main ( int argc, char **argv ) { - int opt; - enum OpMode mode = SHOW; + unsigned long opt; int utc = 0; - int utc_arg = 0; #ifdef CONFIG_FEATURE_HWCLOCK_LONGOPTIONS - struct option long_options[] = { - { "show", 0, 0, 'r' }, - { "utc", 0, 0, 'u' }, +static const struct option hwclock_long_options[] = { { "localtime", 0, 0, 'l' }, + { "utc", 0, 0, 'u' }, + { "show", 0, 0, 'r' }, { "hctosys", 0, 0, 's' }, { "systohc", 0, 0, 'w' }, { 0, 0, 0, 0 } }; - - while (( opt = getopt_long ( argc, argv, "rwsul", long_options, 0 )) != EOF ) { -#else - while (( opt = getopt ( argc, argv, "rwsul" )) != EOF ) { + bb_applet_long_options = hwclock_long_options; #endif - switch ( opt ) { - case 'r': - mode = SHOW; - break; - case 'w': - mode = SYSTOHC; - break; - case 's': - mode = HCTOSYS; - break; - case 'u': - utc = 1; - utc_arg = 1; - break; - case 'l': // -l is not supported by the normal hwclock (only --localtime) - utc = 0; - utc_arg = 1; - break; - default: - bb_show_usage(); - break; - } + + bb_opt_complementaly = "r~ws:w~rs:s~wr"; + opt = bb_getopt_ulflags(argc, argv, "lursw"); + /* Check only one mode was given */ + if(opt & 0x80000000UL) { + bb_show_usage(); } - if ( !utc_arg ) - utc = check_utc ( ); - - switch ( mode ) { - case SYSTOHC: - return from_sys_clock ( utc ); + /* If -u or -l wasnt give check if we are using utc */ + if ((opt & (HWCLOCK_OPT_UTC | HWCLOCK_OPT_LOCALTIME)) == 0) { + utc = check_utc(); + } - case HCTOSYS: + if (opt & HWCLOCK_OPT_HCTOSYS) { return to_sys_clock ( utc ); - - case SHOW: - default: + } + else if (opt & HWCLOCK_OPT_SYSTOHC) { + return from_sys_clock ( utc ); + } else { + /* default HWCLOCK_OPT_SHOW */ return show_clock ( utc ); - } + } } |