Srinidhi Kaushik be63462f93 Handle invalid "losetup" options ...

The non "util-linux" versions of "losetup" don't seem to have
options like "-j" ("--associated") which lists the loop devices
associated with the file, or "--show" which  displays the name
of the assigned loop device for a file.

For instance, when "-j" is used, "GetLoopDevice()" fails with:

    $ losetup -j /path/to/file
    losetup: unrecognized option: j
    BusyBox v1.32.1 () multi-call binary.

Add a fallback option to lookup the device from "sysfs" in cases
where "losetup" fails for an invalid option. This can be done by
reading the backing file from "/sys/block/loop*/loop/backing_file"
for each of the devices listed there.

Signed-off-by: Srinidhi Kaushik <shrinidhi.kaushik@gmail.com>

2021-05-02 20:02:51 +05:30

..

volume_path_handler_linux.go

Handle invalid "losetup" options

2021-05-02 20:02:51 +05:30

volume_path_handler_unsupported.go

…

volume_path_handler.go

Remove unused/dead code

2021-03-09 09:34:37 +08:00