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authorThomas Weißschuh <thomas.weissschuh@linutronix.de>2025-04-28 14:40:15 +0200
committerThomas Weißschuh <linux@weissschuh.net>2025-05-21 15:32:15 +0200
commit5e7392dc82ed7bf3e734cbca77a1c6fd044ec871 (patch)
treecf7ad24729506cbecb6c9367d421d0d5b198f531
parenta009a0c6faa9e7ffac13d55ef6cdac1f9a68efbe (diff)
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: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Acked-by: Willy Tarreau <w@1wt.eu> Link: https://lore.kernel.org/r/20250428-nolibc-misc-v2-14-3c043eeab06c@linutronix.de Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
-rw-r--r--tools/include/nolibc/sys/time.h15
1 files changed, 14 insertions, 1 deletions
diff --git a/tools/include/nolibc/sys/time.h b/tools/include/nolibc/sys/time.h
index 785961c52fa3..33782a19aae9 100644
--- a/tools/include/nolibc/sys/time.h
+++ b/tools/include/nolibc/sys/time.h
@@ -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
}