[PATCH] busybox: use CLOCK_MONOTONIC instead of gettimeofday

Rui Salvaterra rsalvaterra at gmail.com
Wed Jul 8 04:18:14 EDT 2020


The clock_gettime(CLOCK_MONOTONIC) syscall exists for so long that the first
kernel version to support it is not even specified in the man page [1]. Let's
enable it on BusyBox by default. Otherwise, gettimeofday will be used instead,
which will give wrong results if the date/time is reset (time moving backwards).

[1] https://linux.die.net/man/2/clock_gettime

Signed-off-by: Rui Salvaterra <rsalvaterra at gmail.com>
---
 package/utils/busybox/Config-defaults.in | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/package/utils/busybox/Config-defaults.in b/package/utils/busybox/Config-defaults.in
index b45cf981ea..29724041f4 100644
--- a/package/utils/busybox/Config-defaults.in
+++ b/package/utils/busybox/Config-defaults.in
@@ -303,7 +303,7 @@ config BUSYBOX_DEFAULT_FEATURE_SKIP_ROOTFS
 	default n
 config BUSYBOX_DEFAULT_MONOTONIC_SYSCALL
 	bool
-	default n
+	default y
 config BUSYBOX_DEFAULT_IOCTL_HEX2STR_ERROR
 	bool
 	default y
-- 
2.27.0




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