Commit 5e7392dc authored by Thomas Weißschuh's avatar Thomas Weißschuh Committed by Thomas Weißschuh
Browse files

tools/nolibc: fall back to sys_clock_gettime() in gettimeofday() 



Newer architectures (like riscv32) do not implement sys_gettimeofday().
In those cases fall back to sys_clock_gettime().
While that does not support the timezone argument of sys_gettimeofday(),
specifying this argument invokes undefined behaviour, so it's safe to ignore.

Signed-off-by: default avatarThomas Weißschuh <thomas.weissschuh@linutronix.de>
Acked-by: default avatarWilly Tarreau <w@1wt.eu>
Link: https://lore.kernel.org/r/20250428-nolibc-misc-v2-14-3c043eeab06c@linutronix.de


Signed-off-by: default avatarThomas Weißschuh <linux@weissschuh.net>
parent a009a0c6

tools/include/nolibc/sys/time.h

+14 −1
Original line number Diff line number Diff line
@@ -13,6 +13,8 @@ 
#include "../arch.h"

#include "../sys.h"



static int sys_clock_gettime(clockid_t clockid, struct timespec *tp);



/*

 * int gettimeofday(struct timeval *tv, struct timezone *tz);

 */
@@ -23,7 +25,18 @@ int sys_gettimeofday(struct timeval *tv, struct timezone *tz) 
#ifdef __NR_gettimeofday

	return my_syscall2(__NR_gettimeofday, tv, tz);

#else

	return __nolibc_enosys(__func__, tv, tz);

	(void) tz; /* Non-NULL tz is undefined behaviour */



	struct timespec tp;

	int ret;



	ret = sys_clock_gettime(CLOCK_REALTIME, &tp);

	if (!ret && tv) {

		tv->tv_sec = tp.tv_sec;

		tv->tv_usec = tp.tv_nsec / 1000;

	}



	return ret;

#endif

}