This adds a well defined task for handling all overlay mount points that
are required by the system.
Signed-off-by: Andrew Rynhard <andrew@andrewrynhard.com>
This moves to using BLKPG ioctl instead of BLKRRPART. BLKRRPART is older
and more sensitive to EBUSY errors. BLKPG has the potential to minimize
the changes of encountering an EBUSY error when manipulating partition
tables.
In looking at a comparison between BLKPG and BLKRRPART, it seems that
both have their pros and cons. Eventually a combination of the two may
serve us better, but for now I think BLKPG will get us further.
Signed-off-by: Andrew Rynhard <andrew@andrewrynhard.com>
This changes the data partition name to something more appropriate. We
chose ephemeral to make it very clear that the disk should not be used
for application data.
Signed-off-by: Andrew Rynhard <andrew@andrewrynhard.com>
This change aims to make installations more unified and reliable. It
introduces the concept of a mountpoint manager that is capable of
mounting, unmounting, and moving a set of mountpoints in the correct
order.
Signed-off-by: Andrew Rynhard <andrew@andrewrynhard.com>
This uses the correct mount flag for read-only.
We mistakenly had the flag for opening a file as read-only.
Signed-off-by: Andrew Rynhard <andrew@andrewrynhard.com>
