PS: I wrote:
> (print_uptime): Don't read /proc/uptime
You might wonder: What is the replacement? Namely, as a fallback (for
situations where the current process is running inside a container or jail):
- On Linux, the auxiliary function get_linux_boot_time_final_fallback
reads the info from /proc/uptime.
- On macOS and BSD systems, we don't need to read it, because the sysctl
invoked by the auxiliary function get_bsd_boot_time_final_fallback
reads the same info, without needing a mounted /proc file system.
- On Minix and Cygwin, no replacement is needed, because there is no
"container" or "jail" concept in these OSes.
Bruno
