klibc-bot for Ben Hutchings
2023-Jan-26 16:12 UTC
[klibc] [klibc:time64] time: Use clock_* system calls for time-of-day and sleep
Commit-ID: 8b44cc180f664532821211e8261534b0c9e6c01c Gitweb: http://git.kernel.org/?p=libs/klibc/klibc.git;a=commit;h=8b44cc180f664532821211e8261534b0c9e6c01c Author: Ben Hutchings <ben at decadent.org.uk> AuthorDate: Sat, 14 Jan 2023 02:15:10 +0100 Committer: Ben Hutchings <ben at decadent.org.uk> CommitDate: Sun, 15 Jan 2023 21:28:18 +0100 [klibc] time: Use clock_* system calls for time-of-day and sleep {get,set}timeofday(), nanosleep(), and time() on't have direct replacements that use 64-bit time on 32-bit architectures. Instead, we have to use the clock_*() system calls. In preparation for using 64-bit time everywhere: - Make clock_{gettime,nanosleep,settime}() required system calls - Make {get,set}timeofday(), nanosleep(), and time() use them. We still need to use the {get,set}timeofday() system calls to get and set the time zone. Signed-off-by: Ben Hutchings <ben at decadent.org.uk> --- usr/include/sys/time.h | 3 +++ usr/include/sys/types.h | 1 + usr/klibc/Kbuild | 6 ++++-- usr/klibc/SYSCALLS.def | 9 +++++---- usr/klibc/clock_nanosleep.c | 17 +++++++++++++++++ usr/klibc/gettimeofday.c | 22 ++++++++++++++++++++++ usr/klibc/nanosleep.c | 8 ++++++++ usr/klibc/settimeofday.c | 22 ++++++++++++++++++++++ usr/klibc/time.c | 4 ---- 9 files changed, 82 insertions(+), 10 deletions(-) diff --git a/usr/include/sys/time.h b/usr/include/sys/time.h index da9f5809..e8163303 100644 --- a/usr/include/sys/time.h +++ b/usr/include/sys/time.h @@ -50,6 +50,9 @@ static inline int FD_ISSET(int __fd, fd_set *__fdsetp) __extern int gettimeofday(struct timeval *, struct timezone *); __extern int settimeofday(const struct timeval *, const struct timezone *); +__extern int clock_gettime(clockid_t, struct timespec *); +__extern int clock_settime(clockid_t, const struct timespec *); +__extern int clock_nanosleep(clockid_t, int, const struct timespec *, struct timespec *); __extern int getitimer(int, struct itimerval *); __extern int setitimer(int, const struct itimerval *, struct itimerval *); __extern int utimes(const char *, const struct timeval[2]); diff --git a/usr/include/sys/types.h b/usr/include/sys/types.h index b8cdb8cf..e17bc87f 100644 --- a/usr/include/sys/types.h +++ b/usr/include/sys/types.h @@ -33,6 +33,7 @@ typedef __kernel_key_t key_t; typedef __kernel_suseconds_t suseconds_t; /* typedef __kernel_timer_t timer_t; */ typedef int timer_t; +typedef __kernel_clockid_t clockid_t; typedef __kernel_uid32_t uid_t; typedef __kernel_gid32_t gid_t; diff --git a/usr/klibc/Kbuild b/usr/klibc/Kbuild index 02a18e64..8b132190 100644 --- a/usr/klibc/Kbuild +++ b/usr/klibc/Kbuild @@ -29,7 +29,8 @@ klib-y += vsnprintf.o snprintf.o vsprintf.o sprintf.o \ statfs.o fstatfs.o umount.o \ creat.o open.o openat.o \ fread2.o fwrite2.o fgets.o fputc.o fputs.o puts.o putchar.o \ - sleep.o usleep.o strtotimespec.o strtotimeval.o \ + clock_nanosleep.o nanosleep.o sleep.o usleep.o \ + strtotimespec.o strtotimeval.o \ raise.o abort.o assert.o alarm.o pause.o \ __signal.o sysv_signal.o bsd_signal.o siglist.o sigabbrev.o \ siglongjmp.o \ @@ -53,7 +54,8 @@ klib-y += vsnprintf.o snprintf.o vsprintf.o sprintf.o \ clearenv.o nullenv.o \ getopt.o getopt_long.o readdir.o scandir.o alphasort.o remove.o \ syslog.o closelog.o pty.o isatty.o reboot.o \ - time.o lseek.o nice.o getpriority.o \ + gettimeofday.o settimeofday.o time.o \ + lseek.o nice.o getpriority.o \ futimesat.o utime.o utimes.o \ qsort.o bsearch.o \ lrand48.o jrand48.o mrand48.o nrand48.o srand48.o seed48.o \ diff --git a/usr/klibc/SYSCALLS.def b/usr/klibc/SYSCALLS.def index ad8eefa4..d46bb548 100644 --- a/usr/klibc/SYSCALLS.def +++ b/usr/klibc/SYSCALLS.def @@ -201,11 +201,12 @@ int setitimer(int, const struct itimerval *, struct itimerval *); /* * Time-related system calls */ -<?> time_t time(time_t *); clock_t times(struct tms *); -int gettimeofday(struct timeval *, struct timezone *); -int settimeofday(const struct timeval *, const struct timezone *); -int nanosleep(const struct timespec *, struct timespec *); +int gettimeofday::__gettimeofday(void *, struct timezone *); +int settimeofday::__settimeofday(const void *, const struct timezone *); +int clock_gettime(clockid_t, struct timespec *); +int clock_settime(clockid_t, const struct timespec *); +int clock_nanosleep::__clock_nanosleep(clockid_t, int, const struct timespec *, struct timespec *); <?> int pause(); /* diff --git a/usr/klibc/clock_nanosleep.c b/usr/klibc/clock_nanosleep.c new file mode 100644 index 00000000..b4fd1e2c --- /dev/null +++ b/usr/klibc/clock_nanosleep.c @@ -0,0 +1,17 @@ +#include <time.h> +#include <sys/time.h> +#include <sys/syscall.h> + +extern int __clock_nanosleep(clockid_t, int, + const struct timespec *, struct timespec *); + +/* + * POSIX says this has to return a positive error code, but the system + * call returns error codes in the usual way. + */ +int clock_nanosleep(clockid_t clock_id, int flags, + const struct timespec *request, struct timespec *remain) +{ + return __clock_nanosleep(clock_id, flags, request, remain) ? + errno : 0; +} diff --git a/usr/klibc/gettimeofday.c b/usr/klibc/gettimeofday.c new file mode 100644 index 00000000..919c46df --- /dev/null +++ b/usr/klibc/gettimeofday.c @@ -0,0 +1,22 @@ +#include <time.h> +#include <sys/time.h> +#include <sys/syscall.h> + +extern int __gettimeofday(void *, struct timezone *); + +int gettimeofday(struct timeval *tv, struct timezone *tz) +{ + struct timespec ts; + + if (tv) { + if (clock_gettime(CLOCK_REALTIME, &ts)) + return -1; + tv->tv_sec = ts.tv_sec; + tv->tv_usec = ts.tv_nsec / 1000; + } + + if (tz && __gettimeofday(NULL, tz)) + return -1; + + return 0; +} diff --git a/usr/klibc/nanosleep.c b/usr/klibc/nanosleep.c new file mode 100644 index 00000000..11412196 --- /dev/null +++ b/usr/klibc/nanosleep.c @@ -0,0 +1,8 @@ +#include <time.h> +#include <sys/time.h> +#include <sys/syscall.h> + +int nanosleep(const struct timespec *request, struct timespec *remain) +{ + return clock_nanosleep(CLOCK_MONOTONIC, 0, request, remain) ? -1 : 0; +} diff --git a/usr/klibc/settimeofday.c b/usr/klibc/settimeofday.c new file mode 100644 index 00000000..0e37b9bd --- /dev/null +++ b/usr/klibc/settimeofday.c @@ -0,0 +1,22 @@ +#include <time.h> +#include <sys/time.h> +#include <sys/syscall.h> + +extern int __settimeofday(const void *, const struct timezone *); + +int settimeofday(const struct timeval *tv, const struct timezone *tz) +{ + struct timespec ts; + + if (tz && __settimeofday(NULL, tz)) + return -1; + + if (tv) { + ts.tv_sec = tv->tv_sec; + ts.tv_nsec = tv->tv_usec * 1000; + if (clock_gettime(CLOCK_REALTIME, &ts)) + return -1; + } + + return 0; +} diff --git a/usr/klibc/time.c b/usr/klibc/time.c index a0c366b9..e8129316 100644 --- a/usr/klibc/time.c +++ b/usr/klibc/time.c @@ -6,8 +6,6 @@ #include <sys/time.h> #include <sys/syscall.h> -#ifndef __NR_time - time_t time(time_t * t) { struct timeval tv; @@ -19,5 +17,3 @@ time_t time(time_t * t) return (time_t) tv.tv_sec; } - -#endif
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