[Bug 1627] New: losetup does not show loop devices beyond /dev/loop9

[bugzilla at busybox.net]

https://bugs.busybox.net/show_bug.cgi?id=1627

           Summary: losetup does not show loop devices beyond /dev/loop9
           Product: Busybox
           Version: unspecified
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P3
         Component: Other
        AssignedTo: unassigned at busybox.net
        ReportedBy: mrother at mail.com
                CC: busybox-cvs at busybox.net
   Estimated Hours: 0.0


Assuming one uses a non-trivial number of loop devices (e.g. > 10) any of the
devices beyond '/dev/loop9' do not get reported when using 'losetup' to get a
list of ALL (!!) loop devices that are currently in use.

Likewise if the next free loop device is beyond '/dev/loop9' nothing will be
reported when using 'losetup -f' to find out the next free loop device.

I guess this bug is a consequence of the following code snippet from
'util-linux/losetup.c':
    if (++dev[sizeof(dev) - 2] > '9')
                        break;
I have to admit that I have done no tests to confirm or deny this hunch. 

I'm a user of TinyCoreLinux, which relies on BusyBox to a large degree. Due to
the heavy use of loop mounting a lot of loop devices can be in use and it's a
pity that 'losetup' can't be used to the obtain proper information.


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