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    revision 983 by niro, Fri Apr 24 18:33:46 2009 UTC revision 984 by niro, Sun May 30 11:32:42 2010 UTC
    # Line 10  Line 10 
    10   */   */
    11    
    12  #include "libbb.h"  #include "libbb.h"
    13    #include "linux/types.h" /* for __u32 */
    14  #include "linux/watchdog.h"  #include "linux/watchdog.h"
    15    
    16  #define OPT_FOREGROUND  (1 << 0)  #define OPT_FOREGROUND  (1 << 0)
    # Line 32  int watchdog_main(int argc, char **argv) Line 33  int watchdog_main(int argc, char **argv)
    33   static const struct suffix_mult suffixes[] = {   static const struct suffix_mult suffixes[] = {
    34   { "ms", 1 },   { "ms", 1 },
    35   { "", 1000 },   { "", 1000 },
    36   { }   { "", 0 }
    37   };   };
    38    
    39   unsigned opts;   unsigned opts;
    # Line 44  int watchdog_main(int argc, char **argv) Line 45  int watchdog_main(int argc, char **argv)
    45   opt_complementary = "=1"; /* must have exactly 1 argument */   opt_complementary = "=1"; /* must have exactly 1 argument */
    46   opts = getopt32(argv, "Ft:T:", &st_arg, &ht_arg);   opts = getopt32(argv, "Ft:T:", &st_arg, &ht_arg);
    47    
    48     /* We need to daemonize *before* opening the watchdog as many drivers
    49     * will only allow one process at a time to do so.  Since daemonizing
    50     * is not perfect (child may run before parent finishes exiting), we
    51     * can't rely on parent exiting before us (let alone *cleanly* releasing
    52     * the watchdog fd -- something else that may not even be allowed).
    53     */
    54     if (!(opts & OPT_FOREGROUND))
    55     bb_daemonize_or_rexec(DAEMON_CHDIR_ROOT, argv);
    56    
    57   if (opts & OPT_HTIMER)   if (opts & OPT_HTIMER)
    58   htimer_duration = xatou_sfx(ht_arg, suffixes);   htimer_duration = xatou_sfx(ht_arg, suffixes);
    59   stimer_duration = htimer_duration / 2;   stimer_duration = htimer_duration / 2;
    # Line 57  int watchdog_main(int argc, char **argv) Line 67  int watchdog_main(int argc, char **argv)
    67    
    68   /* WDIOC_SETTIMEOUT takes seconds, not milliseconds */   /* WDIOC_SETTIMEOUT takes seconds, not milliseconds */
    69   htimer_duration = htimer_duration / 1000;   htimer_duration = htimer_duration / 1000;
    70    #ifndef WDIOC_SETTIMEOUT
    71    # error WDIOC_SETTIMEOUT is not defined, cannot compile watchdog applet
    72    #else
    73    # if defined WDIOC_SETOPTIONS && defined WDIOS_ENABLECARD
    74     {
    75     static const int enable = WDIOS_ENABLECARD;
    76     ioctl_or_warn(3, WDIOC_SETOPTIONS, (void*) &enable);
    77     }
    78    # endif
    79   ioctl_or_warn(3, WDIOC_SETTIMEOUT, &htimer_duration);   ioctl_or_warn(3, WDIOC_SETTIMEOUT, &htimer_duration);
    80    #endif
    81    
    82  #if 0  #if 0
    83   ioctl_or_warn(3, WDIOC_GETTIMEOUT, &htimer_duration);   ioctl_or_warn(3, WDIOC_GETTIMEOUT, &htimer_duration);
    84   printf("watchdog: SW timer is %dms, HW timer is %dms\n",   printf("watchdog: SW timer is %dms, HW timer is %ds\n",
    85   stimer_duration, htimer_duration * 1000);   stimer_duration, htimer_duration * 1000);
    86  #endif  #endif
    87    
      if (!(opts & OPT_FOREGROUND)) {  
      bb_daemonize_or_rexec(DAEMON_CHDIR_ROOT, argv);  
      }  
       
    88   while (1) {   while (1) {
    89   /*   /*
    90   * Make sure we clear the counter before sleeping, as the counter value   * Make sure we clear the counter before sleeping,
    91   * is undefined at this point -- PFM   * as the counter value is undefined at this point -- PFM
    92   */   */
    93   write(3, "", 1); /* write zero byte */   write(3, "", 1); /* write zero byte */
    94   usleep(stimer_duration * 1000L);   usleep(stimer_duration * 1000L);
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