This is basically a rewrite of the current logic for navigating the catalog,
but in addition allows to follow symlinks.
Following symlinks introduces the issue that generation of canonical paths
(needed in the actual pxar archive) is more complex, as symlinks have to be
resolved and loops avoided.
Signed-off-by: Christian Ebner <c.ebner@proxmox.com>
'clear-selected' allows to clear all the match patterns from the list of
patterns for a subsequent restore.
Signed-off-by: Christian Ebner <c.ebner@proxmox.com>
'list-selected' now shows the filenames matching the patterns for a restore
instead of the patterns themselfs.
The patterns can be displayed by passing the '--pattern' flag.
Signed-off-by: Christian Ebner <c.ebner@proxmox.com>
This eliminates also repeated calls to readlink in fuse, which occur when the
preallocated buffer to store the symlink target path is to small.
Signed-off-by: Christian Ebner <c.ebner@proxmox.com>
entry() allows to lookup the position where and entry belongs and update/insert
it in the HashMap more efficiently than get_mut() and insert().
Details: https://gankra.github.io/blah/hashbrown-insert/
In addition, use the struct LinkedList and remove the outdated code.
Signed-off-by: Christian Ebner <c.ebner@proxmox.com>
In addition to the .pxarexclude files, glob match patterns can be passed to pxar
also via cli parameters.
Therefore the warning is rephrased to be more ambiguous.
Signed-off-by: Christian Ebner <c.ebner@proxmox.com>
- do not "double"-block_in_place() (it may not be nested)
- do not call block_in_place() in non-worker threads
is_in_tokio() isn't sufficient, we need to actually know
that we're in a worker-thread, so we do this by remembering
that we're blocking.
Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com>
tokio now has Handle::try_current() allowing us to
generally check for a tokio runtime even if spawned by
someone else
Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com>
We want to avoid pbs if possible and also avoid placing internal
binaries, not intended for human direct use, in /bin or /sbin paths.
Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
Modeled after the one from PVE, but using rust instead of perl for
resolving the nodename and writing to /etc/issue
Behavior differs a bit. We write all non-loopback addresses to this
file, as the gui accepts connections from them all, so limiting it to
the first one is not really sensible.
Further an error to resolve, or only getting loopback addresses won't
write out an empty /etc/issue file, but a note about the error at the
place where the address would be displayed.
Named it "pbsbanner", not "proxmox-backup-banner" as it's rather an
internal tool anyway and mirrors pvebanner, pmgbanner
Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
Two or more successive slashes should be allowed and treated as a single slash.
We also do not treat two successive slashes at the beginning of a path any
different.
Details are found here:
https://pubs.opengroup.org/onlinepubs/000095399/basedefs/xbd_chap04.html#tag_04_11
Signed-off-by: Christian Ebner <c.ebner@proxmox.com>
Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com>
Context::find_goodbye_entry() is removed and incorporated into the lookup
callback in order to take advantage of the entry_cache and since it is only used
inside this callback.
All entries read on lookup are cached.
Signed-off-by: Christian Ebner <c.ebner@proxmox.com>
Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com>
By storing the payload start offset in the `DirectoryEntry` and passing this
information to `Decoder::read()`, the payload can be read directly and a repeated
re-reading of the entry information is avoided.
Signed-off-by: Christian Ebner <c.ebner@proxmox.com>
Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com>
listxattr must only return the name list, no extended attribute values.
Signed-off-by: Christian Ebner <c.ebner@proxmox.com>
Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com>
ACLs are stored separately in the pxar archive. This implements the functionality
needed to read the ACLs and return them as extended attributes in the getxattr
callback.
Signed-off-by: Christian Ebner <c.ebner@proxmox.com>
Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com>
This helpers are used to construct the extended attributes values from
the ACLs stored in the pxar archive.
Signed-off-by: Christian Ebner <c.ebner@proxmox.com>
Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com>
They are not only needed by the pxar::sequential_decoder but also for the fuse
xattr impl, so it makes more sense to have them there.
Signed-off-by: Christian Ebner <c.ebner@proxmox.com>
Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com>
The goodbye table of directory entries is cached in a LRU cache to speed up
subsequent accesses.
This is especially important for directories with many entries, as then the
readdirplus callback is called repeatedly because of the limited reply buffer
size.
`DirectoryEntry`s are cached for subsequent access in their own LRU cache,
independent of the goodbye tables.
In order to avoid borrow conflicts, the `Context` provides a fn as_mut_refs
as well as a fn run_with_context_refs.
Signed-off-by: Christian Ebner <c.ebner@proxmox.com>
Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com>
By passing `&DirectoryEntry` to stat, the function interface is simplified.
Signed-off-by: Christian Ebner <c.ebner@proxmox.com>
Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com>
This will return a mutable reference just like get_mut, but on a cache miss
it will get and insert the missing value via the fetch method provided via the
Cacher trait.
Signed-off-by: Christian Ebner <c.ebner@proxmox.com>
Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com>
last_successful_backup: Returns the time of the last successful backup
group_path: Returns the absolute path for a backup_group
snapshot_path: Returns the absolute path for a backup_dir
It's a bit dangerous as it points to all the saved backups, so they
would be seemingly lost after updating the path.
Follow our logic from other products, e.g. in PVE we do not allow to
update the backing path/location of a storage either for similar
reasons.
Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
Implements a cache with least recently used cache replacement policy.
Internally the state is tracked by a HashMap (for fast access) and a doubly
linked list (for the access order).
Signed-off-by: Christian Ebner <c.ebner@proxmox.com>
The -sys, -tools and -api crate have now been merged into
the proxmx crate directly. Only macro crates are separate
(but still reexported by the proxmox crate in their
designated locations).
When we need to depend on "parts" of the crate later on
we'll just have to use features.
The reason is mostly that these modules had
inter-dependencies which really make them not independent
enough to be their own crates.
Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com>
This allows to read the target path of a symbolic link in the
Decoder::read_directory_entry() function and stores it in the DirectoryEntry.
By this the Decoder::read_link() function becomes obsolete and is therefore
removed.
Signed-off-by: Christian Ebner <c.ebner@proxmox.com>
By ambiguously using the Decoder::read_directory_entry() the code is simplified
and reading of the DirectoryEntry is concentrated into Context::run_in_context().
Signed-off-by: Christian Ebner <c.ebner@proxmox.com>
Previously it was disciminated based on the entry mode.
For directories, the inode was the offset of the corresponding
goodbye tail mark while for all others it was the offset of the filename.
By simply using the start offset as calculated from the corresponding
goodbye table entry (which yields the archive offset of the filename),
the code is simplified and the more ambiguous read_directory_entry()
function can be used.
The disatvantage of this approach is the need to keep track of the
start and end offsets for each entry, as the end offset is needed in
order to access the goodbye table of directory entries.
The root node still has to be treated special, as it's inode is 1 as per fuse
definition and it has no filename as per the pxar file format definition.
Signed-off-by: Christian Ebner <c.ebner@proxmox.com>
Use Decoder::read_directory_entry() instead of Decoder::attributes() as this
already returns the needed DirectoryEntry.
Signed-off-by: Christian Ebner <c.ebner@proxmox.com>
By not implementing readdir but only readdirplus, the FUSE_CAP_READDIRPLUS flag
is set while the FUSE_CAP_READDIRPLUS_AUTO flag is not set.
Thereby the kernel will issue only readdirplus calls.
Documentation at:
https://libfuse.github.io/doxygen/fuse-3_88_80_2include_2fuse__common_8h.html#a9b90333ad08d0e1c2ed0134d9305ee87
As the expensive part for accessing and reading the attributes is seeking and
decoding each directory entry, it is usefull to force readdirplus calls.
By this a struct `EntryParam` is returned for each entry, therebye avoiding a
subsequent lookup call.
Signed-off-by: Christian Ebner <c.ebner@proxmox.com>
