To untangle the server code from the actual backup
implementation.
It would be ideal if the whole backup/ dir could become its
own crate with minimal dependencies, certainly without
depending on the actual api server. That would then also be
used more easily to create forensic tools for all the data
file types we have in the backup repositories.
Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com>
Used to not require access to the WorkerTask struct outside
the `server` and `api2` module, so it'll be easier to
separate those backup/server/client parts into separate
crates.
Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com>
This is only acquired in those two methods, both as shared. So it has
no use.
It seems, that it was planned in the past that the index deletion
should take the exclusive, while read and write takes the shared
flock on the index, as one can guess from the lock comments in commit
0465218953
But then later, in commit c8ec450e37)
the documented semantics where changed to use a temp file and do an
atomic rename instead for atomicity.
The reader shared flock on the index file was done inbetween,
probably as preparatory step, but was not removed again when strategy
was changed to using the file rename instead.
Do so now, to avoid confusion of readers and a useless flock.
Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
via HTTP2/backup reader protocol. they already could do so via the plain
HTTP download-file/.. API calls that the GUI uses, but the reader
environment required READ permission on the whole datastore instead of
just BACKUP on the backup group itself.
Signed-off-by: Fabian Grünbichler <f.gruenbichler@proxmox.com>
a reader connection should not be allowed to read arbitrary chunks in
the datastore, but only those that were previously registered by opening
the corresponding index files.
this mechanism is needed to allow unprivileged users (that don't have
full READ permissions on the whole datastore) access to their own
backups via a reader environment.
Signed-off-by: Fabian Grünbichler <f.gruenbichler@proxmox.com>
not triggered by any current code, but this would lead to a stack
exhaustion since borrow would call deref which would call borrow again..
Signed-off-by: Fabian Grünbichler <f.gruenbichler@proxmox.com>
Previously only Datastore.Modify was required for creating a new
datastore.
But, that endpoint allows one to pass an arbitrary path, of which all
parent directories will be created, this can allow any user with the
"Datastore Admin" role on "/datastores" to do some damage to the
system. Further, it is effectively a side channel for revealing the
systems directory structure through educated guessing and error
handling.
Add a new privilege "Datastore.Allocate" which, for now, is used
specifically for the create datastore API endpoint.
Add it only to the "Admin" role.
Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
avoiding the need for reshuffling all bits when a new privilege is
added at the start or in the middle of this definition.
Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
If a fuse_loop instance dies suddenly (e.g. SIGKILL), the FUSE mount and
loop device assignment are left behind. We can determine this scenario
on specific unmap, when the PID file is either missing or contains a PID
of a non-running process, but the backing file and potentially loop
device are still there.
If that's the case, do an "emergency cleanup", by unassigning the
loopdev, calling 'fusermount -u' and then cleaning any leftover files
manually.
With this in place, pretty much any situation is now recoverable via
only the 'proxmox-backup-client' binary, by either calling 'unmap' with
or without parameters.
Signed-off-by: Stefan Reiter <s.reiter@proxmox.com>
On unmap, only report success if the instance we are killing actually
terminates. This is especially important so that cleanup routines can be
assured that /run files are actually cleaned up after calling
cleanup_unused_run_files.
Signed-off-by: Stefan Reiter <s.reiter@proxmox.com>
A 'map' call will only clean up what it needs, that is only leftover
files or dangling instances of it's own name.
For a full cleanup the user can call 'unmap' without any arguments.
The 'cleanup on error' behaviour of map_loop is removed. It is no longer
needed (since the next call will clean up anyway), and in fact fixes a
bug where trying to map an image twice would result in an error, but
also cleanup the .pid file of the running instance, causing 'unmap' to
fail afterwards.
Signed-off-by: Stefan Reiter <s.reiter@proxmox.com>
So user doesn't need to remember which loop devices he has mapped to
what.
systemd unit encoding is used to transform a unique identifier for the
mapped image into a suitable name. The files created in /run/pbs-loopdev
will be named accordingly.
The encoding all happens outside fuse_loop.rs, so the fuse_loop module
does not need to care about encodings - it can always assume a name is a
valid filename.
'unmap' without parameter displays all current mappings. It's
autocompletion handler will list the names of all currently mapped
images for easy selection. Unmap by /dev/loopX or loopdev number is
maintained, as those can be distinguished from mapping names.
Signed-off-by: Stefan Reiter <s.reiter@proxmox.com>
for now this isn't needed and would take quite a bit of effort to
match the API schema with PVE.
if there are a lot of requests at some point we can add it in.
Signed-off-by: Oguz Bektas <o.bektas@proxmox.com>
when clicking on a count in the summary, a small task overlay now pops
up that shows those tasks. this way, the user has an easy way
of seeing which tasks failed exactly
Signed-off-by: Dominik Csapak <d.csapak@proxmox.com>
by moving the definition into the controller and dynamically use them
in the updateTasks function
we will reuse/extend this later
Signed-off-by: Dominik Csapak <d.csapak@proxmox.com>
we showed 'last month' even if we did not limit the api call
implement that and make the number of days configurable
(we have most of the code already available for that, since
the base dashboard got copied from pmg and never cleaned up)
Signed-off-by: Dominik Csapak <d.csapak@proxmox.com>
the same as the regular TaskState, but without its fields, so that
we can use the api macro and use it as api call parameter
Signed-off-by: Dominik Csapak <d.csapak@proxmox.com>
'${misc:Depends}' is empty at the moment, otherwise this would have
already generated invalid packages..
Signed-off-by: Fabian Grünbichler <f.gruenbichler@proxmox.com>
Allows mapping fixed-index .img files (usually from VM backups) to be
mapped to a local loopback device.
The architecture uses a FUSE-backed temp file mapped to a loopdev:
/dev/loopX -> FUSE /run/pbs-loopdev/xxx -> backup client -> PBS
Since unmapping requires some cleanup (unmap the loopdev, stop FUSE,
remove the temp files) a special 'unmap' command is added, which uses a
PID file to send SIGINT to the backup-client instance started with
'map', which will handle the cleanup itself.
The polling with select! in mount.rs needs to be split in two, since we
have a chicken and egg problem between running FUSE and setting up the
loop device - so we need to do them concurrently, until the loopdev is
assigned, at which point we can report success and daemonize, and then
continue polling the FUSE loop future.
A loopdev module is added to tools containing all required functions for
mapping a loop device to the FUSE file, with the ioctls moved into an
inline module to avoid exposing them directly.
The client code is placed in the 'mount' module, which, while
admittedly a loose fit, allows reuse of the daemonizing code.
Signed-off-by: Stefan Reiter <s.reiter@proxmox.com>
while restructuring the docs, explicit title wasn't included in the
correct file
fixes commit 04e24b14f0
Signed-off-by: Oguz Bektas <o.bektas@proxmox.com>
previously it looked for the first instance. this behavior
became an issue while trying to add multiple onlineHelp buttons
Signed-off-by: Oguz Bektas <o.bektas@proxmox.com>
