On 7/19/2018 6:26 PM, brian m. carlson wrote:
On Wed, Jul 18, 2018 at 02:18:44PM +0200, Johannes Schindelin wrote:
On Sat, 14 Jul 2018, brian m. carlson wrote:
I will say that at cPanel, we have a configuration where end users can
end up inside a mount namespace without /proc (depending on the
preferences of the administrator). However, it's easy enough for us to
simply build without RUNTIME_PREFIX if necessary.
If we turn it on by default, it would be nice if we documented (maybe in
the Makefile) that it requires /proc on Linux for the benefit of other
people who might be in a similar situation.
Is there *really* no other way on Linux to figure out the absolute path of
the current executable than to open a pseudo file in the `/proc` file
system?
Nope, not that I'm aware of. You have to read the destination of
the /proc/PID/exe symlink.
Getting the full path of the current executable is a very Windows thing.
On most Unix-based systems it just isn't possible (even if Linux does
have the /proc thing). Think about hard-links, for example. There just
isn't a single canonical pathname for an inode.
Jeff
