516fec97d9
This also adds the sys_settime() kernel call which allows for the adjusting of the clock named realtime in the kernel. The existing sys_stime() function is still needed for a separate job (setting the boottime). The boottime is set in the readclock driver. The sys_settime() interface is meant to be flexible and will support both clock_settime() and adjtime() when adjtime() is implemented later. settimeofday() was adjusted to use the clock_settime() interface. One side note discovered during testing: uptime(1) (part of the last(1)), uses wtmp to determine boottime (not Minix's times(2)). This leads `uptime` to report odd results when you set the time to a time prior to boottime. This isn't a new bug introduced by my changes. It's been there for a while.
25 lines
421 B
C
25 lines
421 B
C
#include <sys/cdefs.h>
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#include <lib.h>
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#include "namespace.h"
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#include <time.h>
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#ifdef __weak_alias
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__weak_alias(clock_settime, __clock_settime50);
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#endif
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int clock_settime(clockid_t clock_id, const struct timespec *ts)
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{
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message m;
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m.m2_i1 = (clockid_t) clock_id;
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m.m2_l1 = (time_t) ts->tv_sec;
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m.m2_l2 = (long) ts->tv_nsec;
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if (_syscall(PM_PROC_NR, CLOCK_SETTIME, &m) < 0)
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return -1;
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return 0;
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}
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