bug#64937: boot time on Linux

Bruno Haible writes: > Po Lu wrote: >> >> Both clock_gettime (CLOCK_BOOTIME, ... sysinfo fail with AVC denial >> >> errors and errno set to EACCESS. >> > >> > Was this inside Termux, or inside the Emacs app? >> >> Inside the Emacs app. > > Emacs does not have the following in

bug#64937: boot time on Linux

Bruno Haible writes: > Po Lu wrote: >> Both clock_gettime (CLOCK_BOOTIME, ... sysinfo fail with AVC denial >> errors and errno set to EACCESS. > > Was this inside Termux, or inside the Emacs app? Inside the Emacs app. I'll try Termux soon: maybe the target SDK version is the culprit.

bug#64937: boot time on Linux

Bruno Haible writes: > I wrote: >> > 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 =

bug#64937: boot time on Linux

Natanael Copa writes: > 2) Even if it does exist, there is no guarantee that the timestamp is > correct. There are machines without RTC (Raspberry PI for example), > and in this case the time stamp may end up to be the same every reboot > (if correctly set up it should save the shutdown time for

bug#64937: boot time on Linux

Paul Eggert writes: > On 2023-08-09 19:14, Po Lu wrote: >> This uses the uptime counter (which also results in an SELinux denial >> for me, but different Android distributions have SELinux policies of >> varying strictness), which cannot establish the precise time the system >> started > > Emacs

bug#64937: boot time on Linux

Bruno Haible writes: > 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

bug#64937: boot time on Linux

Paul Eggert writes: > [For those cc'ed, the thread's at .] > > On 2023-08-09 07:29, Bruno Haible wrote: > >> And on Alpine Linux, while /var/run/utmp is empty, its time stamp is >> essentially the boot time. >> The approach used by Emacs, namely to look at the