Also, removes an unused println statement in the decoder callback function and
fixes a typo.
Further, use ABI compatible Option<&T> for FFI to avoid use of raw pointers.
Signed-off-by: Christian Ebner <c.ebner@proxmox.com>
Implements functions attributes, open, read, read_link and get_dir
to be used by the fuse implementation which uses file offsets within the archive
as inodes to reference the archives items.
Signed-off-by: Christian Ebner <c.ebner@proxmox.com>
By this it is possible to read and check just the first u64 of the corresponding
structs in order to identify the items.
This is needed for the fuse implementation in order to get entries based on the
archive offset, used as inode.
Directories are referenced by the offset to the goodbye tail while other items
are referenced by the offset of the filename followed by the entry.
Signed-off-by: Christian Ebner <c.ebner@proxmox.com>
... and use std::mem::MaybeUninit or proxmox::tools::vec::uninitialized() instead.
Signed-off-by: Christian Ebner <c.ebner@proxmox.com>
Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com>
By taking ownership it is easier to move the decoder into another struct,
e.g. into a session context in fuse.
Signed-off-by: Christian Ebner <c.ebner@proxmox.com>
This adds the basic code in order to create a fuse session and mount an archive.
It adds libfuse3-3 as runtime dependency and libfuse3-dev as build dependency.
Signed-off-by: Christian Ebner <c.ebner@proxmox.com>
The flag CA_FORMAT_SHA512_256 is used to switch between sha512 and sha256 to
calculate digest in casync.
As we use sha256, we can get rid of this flag for now.
Signed-off-by: Christian Ebner <c.ebner@proxmox.com>
The original name PxarExcludePattern makes no sense anymore as the patterns are
also used to match filenames during restore of the archive.
Therefore, exclude_pattern.rs is moved to match_pattern.rs and PxarExcludePattern
rename to MatchPattern.
Further, since it makes more sense the MatchTypes are now declared as None,
Positive, Negative, PartialPositive or PartialNegative, as this makes more sense
and seems more readable.
Positive matches are those without '!' prefix, Negatives with '!' prefix.
This makes also the filename matching in the encoder/decoder more intuitive and
the logic was adapted accordingly.
Signed-off-by: Christian Ebner <c.ebner@proxmox.com>
Partial extraction of an archive with a glob pattern, e.g. '**/*.conf' lead to
the unexpected behaviour of restoring all partially matched directories (in this
example all of them).
This patch fixes this unexpected behaviour by only restoring those directories
were the directory or one of its sub-items fully matched the pattern and should
therefore be restored.
To achive this behavoiur, directory metadata is pushed onto a stack and restored
on demand.
Signed-off-by: Christian Ebner <c.ebner@proxmox.com>
In order to restore only directories when some of their content fully matched
a match pattern on partial restores, these directories and their metadata are
pushed onto this buffer and only restored successivley on demand.
Signed-off-by: Christian Ebner <c.ebner@proxmox.com>
