We're kind enough to provide DM names for non-swap devices, but simply
use the /dev/dm-X nodes for swap, since that's what /proc/swaps provides
us with. Resolve the DM name out of sysfs and use this instead.
Fixes FS#32609.
This mainly fixes the case where there's devices mounted under the
chroot directory. Creating a bind mount on top of this will obscure
these other mounts.
The %b formatter is too generic for us to use, as a sequence such as
'\b' is invalid for hex escaping, but valid for %b. Port over the logic
from util-linux's mangle mini-lib and use this instead. This supports
both 3 digits hex as well as 3 digit octal escapes, and will ignore the
more generic ascii based single character escapes. Output is always in
octal format to comply with fstab(5).
* the Makefile uses m4 to build the common lib into the scripts
* it includes install, uninstall and clean targets
* the dist target creates a source tar from a tag
Signed-off-by: Pierre Schmitz <pierre@archlinux.de>
