From 898f3793164c0e811b28a37827f4bedce334066f Mon Sep 17 00:00:00 2001 From: Lukasz Majewski Date: Tue, 21 Apr 2020 19:12:17 +0200 Subject: [PATCH] y2038: Provide conversion helpers for struct __timex64 Those functions allow easy conversion between Y2038 safe, glibc internal struct __timex64 and struct timex. Those functions are put in Linux specific sys/timex.h file, as putting them into glibc's local include/time.h would cause build break on HURD as it doesn't support struct timex related syscalls. Build tests: ./src/scripts/build-many-glibcs.py glibcs Reviewed-by: Alistair Francis Reviewed-by: Adhemerval Zanella --- sysdeps/unix/sysv/linux/include/sys/timex.h | 61 +++++++++++++++++++++ 1 file changed, 61 insertions(+) diff --git a/sysdeps/unix/sysv/linux/include/sys/timex.h b/sysdeps/unix/sysv/linux/include/sys/timex.h index c555509c82..3efe7cd306 100644 --- a/sysdeps/unix/sysv/linux/include/sys/timex.h +++ b/sysdeps/unix/sysv/linux/include/sys/timex.h @@ -25,6 +25,7 @@ libc_hidden_proto (__adjtimex) +# include # include /* Local definition of 64 bit time supporting timex struct */ # if __TIMESIZE == 64 @@ -71,5 +72,65 @@ struct __timex64 int :32; }; # endif + +/* Convert a known valid struct timex into a struct __timex64. */ +static inline struct __timex64 +valid_timex_to_timex64 (const struct timex tx) +{ + struct __timex64 tx64; + + tx64.modes = tx.modes; + tx64.offset = tx.offset; + tx64.freq = tx.freq; + tx64.maxerror = tx.maxerror; + tx64.esterror = tx.esterror; + tx64.status = tx.status; + tx64.constant = tx.constant; + tx64.precision = tx.precision; + tx64.tolerance = tx.tolerance; + tx64.time = valid_timeval_to_timeval64 (tx.time); + tx64.tick = tx.tick; + tx64.ppsfreq = tx.ppsfreq; + tx64.jitter = tx.jitter; + tx64.shift = tx.shift; + tx64.stabil = tx.stabil; + tx64.jitcnt = tx.jitcnt; + tx64.calcnt = tx.calcnt; + tx64.errcnt = tx.errcnt; + tx64.stbcnt = tx.stbcnt; + tx64.tai = tx.tai; + + return tx64; +} + +/* Convert a known valid struct __timex64 into a struct timex. */ +static inline struct timex +valid_timex64_to_timex (const struct __timex64 tx64) +{ + struct timex tx; + + tx.modes = tx64.modes; + tx.offset = tx64.offset; + tx.freq = tx64.freq; + tx.maxerror = tx64.maxerror; + tx.esterror = tx64.esterror; + tx.status = tx64.status; + tx.constant = tx64.constant; + tx.precision = tx64.precision; + tx.tolerance = tx64.tolerance; + tx.time = valid_timeval64_to_timeval (tx64.time); + tx.tick = tx64.tick; + tx.ppsfreq = tx64.ppsfreq; + tx.jitter = tx64.jitter; + tx.shift = tx64.shift; + tx.stabil = tx64.stabil; + tx.jitcnt = tx64.jitcnt; + tx.calcnt = tx64.calcnt; + tx.errcnt = tx64.errcnt; + tx.stbcnt = tx64.stbcnt; + tx.tai = tx64.tai; + + return tx; +} # endif /* _ISOMAC */ #endif /* sys/timex.h */ -- 2.43.5