Re: boot time on Linux

[Bruno Haible]

Po Lu wrote:
> > Also, I don't know how Android records boot time so I'll cc this to Po
> > Lu, the main developer for Emacs on Android.
> 
> The boot time is off limits to user programs on Android, for security
> reasons.

No, it isn't. The attached file, when compiled and run under Termux (which
doesn't have particular permissions), prints e.g.:

from clock  : 1691616762.476870660 = 2023-08-09 21:32:42.476870660
from sysinfo: 1691616762.329261637 = 2023-08-09 21:32:42.329261637

Note that this uses the kernel's uptime counter, so it will not work well
when the user changes the current time manually. But this is rare on Android.

Bruno

foo.c
Description: Text Data