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author | Albert ARIBAUD (3ADEV) <albert.aribaud@3adev.fr> | 2017-08-09 12:07:41 +0200 |
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committer | Albert ARIBAUD (3ADEV) <albert.aribaud@3adev.fr> | 2017-08-09 12:07:41 +0200 |
commit | f9e14ae98e55911019d3a3d12c4bf05502a43e28 (patch) | |
tree | d26e218caf33edaf572290fc104d2c80d25535f5 | |
parent | 161bce3da545ed806c269b28dbc8621dd432ae2b (diff) | |
download | glibc-aaribaud/y2038-2.25-dev.tar.gz |
Y2038: implement Y2038-ready adjtimex, ntp_adjtimeaaribaud/y2038-2.25-dev
-rw-r--r-- | include/time.h | 31 | ||||
-rw-r--r-- | sysdeps/unix/sysv/linux/adjtime.c | 85 | ||||
-rw-r--r-- | sysdeps/unix/sysv/linux/sys/timex.h | 17 | ||||
-rw-r--r-- | time/Versions | 1 |
4 files changed, 134 insertions, 0 deletions
diff --git a/include/time.h b/include/time.h index ead9ec488b..fdec7f0169 100644 --- a/include/time.h +++ b/include/time.h @@ -74,6 +74,37 @@ struct __ntptimeval_t64 long int __glibc_reserved4; }; +/* 64-bit time version of the current struct timex */ +struct __timex_t64 +{ + unsigned int modes; /* mode selector */ + __syscall_slong_t offset; /* time offset (usec) */ + __syscall_slong_t freq; /* frequency offset (scaled ppm) */ + __syscall_slong_t maxerror; /* maximum error (usec) */ + __syscall_slong_t esterror; /* estimated error (usec) */ + int status; /* clock command/status */ + __syscall_slong_t constant; /* pll time constant */ + __syscall_slong_t precision; /* clock precision (usec) (ro) */ + __syscall_slong_t tolerance; /* clock frequency tolerance (ppm) (ro) */ + struct __timeval64 time; /* (read only, except for ADJ_SETOFFSET) */ + __syscall_slong_t tick; /* (modified) usecs between clock ticks */ + __syscall_slong_t ppsfreq; /* pps frequency (scaled ppm) (ro) */ + __syscall_slong_t jitter; /* pps jitter (us) (ro) */ + int shift; /* interval duration (s) (shift) (ro) */ + __syscall_slong_t stabil; /* pps stability (scaled ppm) (ro) */ + __syscall_slong_t jitcnt; /* jitter limit exceeded (ro) */ + __syscall_slong_t calcnt; /* calibration intervals (ro) */ + __syscall_slong_t errcnt; /* calibration errors (ro) */ + __syscall_slong_t stbcnt; /* stability limit exceeded (ro) */ + + int tai; /* TAI offset (ro) */ + + /* ??? */ + int :32; int :32; int :32; int :32; + int :32; int :32; int :32; int :32; + int :32; int :32; int :32; +}; + extern __typeof (clock_getres) __clock_getres; extern __typeof (clock_gettime) __clock_gettime; extern int __clock_getres64 (clockid_t __clock_id, struct __timespec64 *__res) __THROW; diff --git a/sysdeps/unix/sysv/linux/adjtime.c b/sysdeps/unix/sysv/linux/adjtime.c index 28a75a2e40..c405769e95 100644 --- a/sysdeps/unix/sysv/linux/adjtime.c +++ b/sysdeps/unix/sysv/linux/adjtime.c @@ -19,6 +19,7 @@ #include <limits.h> #include <sys/time.h> #include <sys/timex.h> +#include <include/time.h> #define MAX_SEC (INT_MAX / 1000000L - 2) #define MIN_SEC (INT_MIN / 1000000L + 2) @@ -133,3 +134,87 @@ int __adjtime_t64 (const struct __timeval64 *itv, } return 0; } + +/* 64-bit time version */ + +extern int __y2038_linux_support; + +int +__adjtimex_t64(struct __timex_t64 *tx) +{ + struct timex tx32; + + if (__y2038_linux_support) + { + /* TODO: implement with a 64-bit time syscall */ + } + + if (tx == NULL) + { + __set_errno (EFAULT); + return -1; + } + + if ((tx->modes & ADJ_SETOFFSET) != 0 && tx->time.tv_sec > INT_MAX) + { + __set_errno (EOVERFLOW); + return -1; + } + + /* Implement with existing 32-bit time syscall */ + + /* Just copy everything */ + tx32.modes = tx->modes; + tx32.offset = tx->offset; + tx32.freq = tx->freq; + tx32.maxerror = tx->maxerror; + tx32.esterror = tx->esterror; + tx32.status = tx->status; + tx32.constant = tx->constant; + tx32.precision = tx->precision; + tx32.tolerance = tx->tolerance; + tx32.time.tv_sec = tx->time.tv_sec; + tx32.time.tv_usec = tx->time.tv_usec; + tx32.tick = tx->tick; + tx32.ppsfreq = tx->ppsfreq; + tx32.jitter = tx->jitter; + tx32.shift = tx->shift; + tx32.stabil = tx->stabil; + tx32.jitcnt = tx->jitcnt; + tx32.calcnt = tx->calcnt; + tx32.errcnt = tx->errcnt; + tx32.stbcnt = tx->stbcnt; + + tx32.tai = tx->tai; + /* WARNING -- anonymous fields after TAI are not copied. */ + + int result = ADJTIMEX(&tx32); + + if (result == 0) + { + /* Just copy back everything */ + tx->modes = tx32.modes; + tx->offset = tx32.offset; + tx->freq = tx32.freq; + tx->maxerror = tx32.maxerror; + tx->esterror = tx32.esterror; + tx->status = tx32.status; + tx->constant = tx32.constant; + tx->precision = tx32.precision; + tx->tolerance = tx32.tolerance; + tx->time.tv_sec = tx32.time.tv_sec; + tx->time.tv_usec = tx32.time.tv_usec; + tx->tick = tx32.tick; + tx->ppsfreq = tx32.ppsfreq; + tx->jitter = tx32.jitter; + tx->shift = tx32.shift; + tx->stabil = tx32.stabil; + tx->jitcnt = tx32.jitcnt; + tx->calcnt = tx32.calcnt; + tx->errcnt = tx32.errcnt; + tx->stbcnt = tx32.stbcnt; + } + + return result; +} +weak_alias (__adjtimex_t64, __ntp_adjtime_t64); diff --git a/sysdeps/unix/sysv/linux/sys/timex.h b/sysdeps/unix/sysv/linux/sys/timex.h index 4981d07016..e10c9870f0 100644 --- a/sysdeps/unix/sysv/linux/sys/timex.h +++ b/sysdeps/unix/sysv/linux/sys/timex.h @@ -55,6 +55,15 @@ struct ntptimeval __BEGIN_DECLS extern int __adjtimex (struct timex *__ntx) __THROW; + +#ifdef __USE_TIME_BITS64 +# if defined(__REDIRECT) +extern time_t __REDIRECT (adjtimex, (struct timex *__ntx), + __adjtimex_t64) __THROW; +# else +# define adjtimex __adjtimex_t64 +# endif +#endif extern int adjtimex (struct timex *__ntx) __THROW; #ifndef __USE_TIME_BITS64 @@ -75,6 +84,14 @@ extern time_t __REDIRECT (ntp_gettimex, (struct ntptimeval *__ntv), # define ntp_gettime ntp_gettimex #endif +#ifdef __USE_TIME_BITS64 +# if defined(__REDIRECT) +extern int __REDIRECT (ntp_adjtime, (struct timex *__tntx), + __ntp_adjtime_t64) __THROW; +# else +# define ntp_adjtime __ntp_adjtime_t64 +# endif +#endif extern int ntp_adjtime (struct timex *__tntx) __THROW; __END_DECLS diff --git a/time/Versions b/time/Versions index 10b1ccea0b..947ba1e831 100644 --- a/time/Versions +++ b/time/Versions @@ -76,5 +76,6 @@ libc { __nanosleep_t64; __adjtime_t64; __getitimer_t64; __setitimer_t64; + __adjtimex_t64; } } |