int state_save(memfile_t *file)
{
stateheader_t header;
block_t *block;
int i;
//clear the state info
memset(&header,0,sizeof(stateheader_t));
//set the ident/version of the state header
header.ident = ident;
header.version = version;
//calculate total data size
for(i=0;blockinfo[i].type;i++) {
blockinfo[i].size = 0;
blockinfo[i].func(STATE_SIZE,(u8*)&blockinfo[i].size);
if(blockinfo[i].size) {
header.usize += blockinfo[i].size + 8;
}
}
//write the state header
writevar(header.ident,4);
writevar(header.version,2);
writevar(header.flags,2);
writevar(header.usize,4);
writevar(header.csize,4);
writevar(header.crc32,4);
//write each block
for(i=0;blockinfo[i].type;i++) {
if(blockinfo[i].size == 0)
continue;
printf("saving block '%4s' (%d bytes)\n",&blockinfo[i].type,blockinfo[i].size);
block = block_create(blockinfo[i].type,blockinfo[i].size);
blockinfo[i].func(STATE_SAVE,block->data);
block_save(file,block);
block_destroy(block);
}
return(0);
}
/*
* main - parse arguments and handle options
*/
int
main(
int argc,
char *argv[]
)
{
int c;
int errflg = 0;
off_t tickadj_offset;
off_t tick_offset;
off_t dosync_offset;
off_t noprintf_offset;
int tickadj, ktickadj; /* HMS: Why isn't this u_long? */
int tick, ktick; /* HMS: Why isn't this u_long? */
int dosynctodr;
int noprintf;
int hz;
int hz_int, hz_hundredths;
int recommend_tickadj;
long tmp;
progname = argv[0];
while ((c = ntp_getopt(argc, argv, "a:Adkpqst:")) != EOF)
{
switch (c)
{
case 'a':
writetickadj = atoi(ntp_optarg);
if (writetickadj <= 0)
{
(void) fprintf(stderr,
"%s: unlikely value for tickadj: %s\n",
progname, ntp_optarg);
errflg++;
}
#if defined SCO5_CLOCK
if (writetickadj % HZ)
{
writetickadj = (writetickadj / HZ) * HZ;
(void) fprintf(stderr,
"tickadj truncated to: %d\n", writetickadj);
}
#endif /* SCO5_CLOCK */
break;
case 'A':
writeopttickadj = 1;
break;
case 'd':
++debug;
break;
case 'k':
dokmem = 1;
break;
case 'p':
setnoprintf = 1;
break;
case 'q':
quiet = 1;
break;
case 's':
unsetdosync = 1;
break;
case 't':
writetick = atoi(ntp_optarg);
if (writetick <= 0)
{
(void) fprintf(stderr,
"%s: unlikely value for tick: %s\n",
progname, ntp_optarg);
errflg++;
}
break;
default:
errflg++;
break;
}
}
if (errflg || ntp_optind != argc)
{
(void) fprintf(stderr,
"usage: %s [-Adkpqs] [-a newadj] [-t newtick]\n", progname);
exit(2);
}
getoffsets(&tick_offset, &tickadj_offset, &dosync_offset, &noprintf_offset);
if (debug)
{
(void) printf("tick offset = %lu\n", (unsigned long)tick_offset);
(void) printf("tickadj offset = %lu\n", (unsigned long)tickadj_offset);
(void) printf("dosynctodr offset = %lu\n", (unsigned long)dosync_offset);
(void) printf("noprintf offset = %lu\n", (unsigned long)noprintf_offset);
}
if (writetick && (tick_offset == 0))
{
(void) fprintf(stderr,
"No tick kernel variable\n");
errflg++;
}
if (writeopttickadj && (tickadj_offset == 0))
{
(void) fprintf(stderr,
"No tickadj kernel variable\n");
errflg++;
}
if (unsetdosync && (dosync_offset == 0))
{
(void) fprintf(stderr,
"No dosynctodr kernel variable\n");
errflg++;
}
if (setnoprintf && (noprintf_offset == 0))
{
(void) fprintf(stderr,
"No noprintf kernel variable\n");
errflg++;
}
if (tick_offset != 0)
{
readvar(fd, tick_offset, &tick);
#if defined(TICK_NANO) && defined(K_TICK_NAME)
if (!quiet)
(void) printf("KERNEL %s = %d nsec\n", K_TICK_NAME, tick);
#endif /* TICK_NANO && K_TICK_NAME */
#ifdef TICK_NANO
tick /= 1000;
#endif
}
else
{
tick = 0;
}
if (tickadj_offset != 0)
{
readvar(fd, tickadj_offset, &tickadj);
#ifdef SCO5_CLOCK
/* scale from nsec/sec to usec/tick */
tickadj /= (1000L * HZ);
#endif /*SCO5_CLOCK */
#if defined(TICKADJ_NANO) && defined(K_TICKADJ_NAME)
if (!quiet)
(void) printf("KERNEL %s = %d nsec\n", K_TICKADJ_NAME, tickadj);
#endif /* TICKADJ_NANO && K_TICKADJ_NAME */
#ifdef TICKADJ_NANO
tickadj += 999;
tickadj /= 1000;
#endif
}
else
{
tickadj = 0;
}
if (dosync_offset != 0)
{
readvar(fd, dosync_offset, &dosynctodr);
}
if (noprintf_offset != 0)
{
readvar(fd, noprintf_offset, &noprintf);
}
(void) close(fd);
if (unsetdosync && dosync_offset == 0)
{
(void) fprintf(stderr,
"%s: can't find %s in namelist\n",
progname,
#ifdef K_DOSYNCTODR_NAME
K_DOSYNCTODR_NAME
#else /* not K_DOSYNCTODR_NAME */
"dosynctodr"
#endif /* not K_DOSYNCTODR_NAME */
);
exit(1);
}
hz = HZ;
#if defined(HAVE_SYSCONF) && defined(_SC_CLK_TCK)
hz = (int) sysconf (_SC_CLK_TCK);
#endif /* not HAVE_SYSCONF && _SC_CLK_TCK */
#ifdef OVERRIDE_HZ
hz = DEFAULT_HZ;
#endif
ktick = tick;
#ifdef PRESET_TICK
tick = PRESET_TICK;
#endif /* PRESET_TICK */
#ifdef TICKADJ_NANO
tickadj /= 1000;
if (tickadj == 0)
tickadj = 1;
#endif
ktickadj = tickadj;
#ifdef PRESET_TICKADJ
tickadj = (PRESET_TICKADJ) ? PRESET_TICKADJ : 1;
#endif /* PRESET_TICKADJ */
if (!quiet)
{
if (tick_offset != 0)
{
(void) printf("KERNEL tick = %d usec (from %s kernel variable)\n",
ktick,
#ifdef K_TICK_NAME
K_TICK_NAME
#else
"<this can't happen>"
#endif
);
}
#ifdef PRESET_TICK
(void) printf("PRESET tick = %d usec\n", tick);
#endif /* PRESET_TICK */
if (tickadj_offset != 0)
{
(void) printf("KERNEL tickadj = %d usec (from %s kernel variable)\n",
ktickadj,
#ifdef K_TICKADJ_NAME
K_TICKADJ_NAME
#else
"<this can't happen>"
#endif
);
}
#ifdef PRESET_TICKADJ
(void) printf("PRESET tickadj = %d usec\n", tickadj);
#endif /* PRESET_TICKADJ */
if (dosync_offset != 0)
{
(void) printf("dosynctodr is %s\n", dosynctodr ? "on" : "off");
}
if (noprintf_offset != 0)
{
(void) printf("kernel level printf's: %s\n",
noprintf ? "off" : "on");
}
}
if (tick <= 0)
{
(void) fprintf(stderr, "%s: the value of tick is silly!\n",
progname);
exit(1);
}
hz_int = (int)(1000000L / (long)tick);
hz_hundredths = (int)((100000000L / (long)tick) - ((long)hz_int * 100L));
if (!quiet)
{
(void) printf("KERNEL hz = %d\n", hz);
(void) printf("calculated hz = %d.%02d Hz\n", hz_int,
hz_hundredths);
}
#if defined SCO5_CLOCK
recommend_tickadj = 100;
#else /* SCO5_CLOCK */
tmp = (long) tick * 500L;
recommend_tickadj = (int)(tmp / 1000000L);
if (tmp % 1000000L > 0)
{
recommend_tickadj++;
}
#ifdef MIN_REC_TICKADJ
if (recommend_tickadj < MIN_REC_TICKADJ)
{
recommend_tickadj = MIN_REC_TICKADJ;
}
#endif /* MIN_REC_TICKADJ */
#endif /* SCO5_CLOCK */
if ((!quiet) && (tickadj_offset != 0))
{
(void) printf("recommended value of tickadj = %d us\n",
recommend_tickadj);
}
if ( writetickadj == 0
&& !writeopttickadj
&& !unsetdosync
&& writetick == 0
&& !setnoprintf)
{
exit(errflg ? 1 : 0);
}
if (writetickadj == 0 && writeopttickadj)
{
writetickadj = recommend_tickadj;
}
fd = openfile(file, O_WRONLY);
if (setnoprintf && (noprintf_offset != 0))
{
if (!quiet)
{
(void) fprintf(stderr, "setting noprintf: ");
(void) fflush(stderr);
}
writevar(fd, noprintf_offset, 1);
if (!quiet)
{
(void) fprintf(stderr, "done!\n");
}
}
if ((writetick > 0) && (tick_offset != 0))
{
if (!quiet)
{
(void) fprintf(stderr, "writing tick, value %d: ",
writetick);
(void) fflush(stderr);
}
writevar(fd, tick_offset, writetick);
if (!quiet)
{
(void) fprintf(stderr, "done!\n");
}
}
if ((writetickadj > 0) && (tickadj_offset != 0))
{
if (!quiet)
{
(void) fprintf(stderr, "writing tickadj, value %d: ",
writetickadj);
(void) fflush(stderr);
}
#ifdef SCO5_CLOCK
/* scale from usec/tick to nsec/sec */
writetickadj *= (1000L * HZ);
#endif /* SCO5_CLOCK */
writevar(fd, tickadj_offset, writetickadj);
if (!quiet)
{
(void) fprintf(stderr, "done!\n");
}
}
if (unsetdosync && (dosync_offset != 0))
{
if (!quiet)
{
(void) fprintf(stderr, "zeroing dosynctodr: ");
(void) fflush(stderr);
}
writevar(fd, dosync_offset, 0);
if (!quiet)
{
(void) fprintf(stderr, "done!\n");
}
}
(void) close(fd);
return(errflg ? 1 : 0);
}