Allows to partially restore an archive by passing match patterns to the restore
function.
The whole restore is performed in sequential, therefore the whole archive has to
be read.
By wrapping the RawFd into an Option it can be controlled if the corresponding
part is restored (in case of Some(fd)) or if the Reader reads over it
without restore (in case of None).
Signed-off-by: Christian Ebner <c.ebner@proxmox.com>
match_exclude_pattern() does not need a '&mut self' reference to the encoder,
move it therefore out of the impl.
Further, this patch contains some naming and formatting cosmetics.
Signed-off-by: Christian Ebner <c.ebner@proxmox.com>
dir_count was used to track the number of directory entries to store in the
archive and bail if the maximum is exceeded.
As the number of entries is equally obtained from the list of the filenames to
include, use that one instead.
Signed-off-by: Christian Ebner <c.ebner@proxmox.com>
Partial matches make only sense for directories, files are always leafs of the
tree. Take this into account in order to avoid restoring of files which only
matched the front of a match pattern.
Signed-off-by: Christian Ebner <c.ebner@proxmox.com>
This splits the functionality of restore_sequential() into several smaller
functions in order to allow to reuse them when restoring by seeking based on
the goodbye table offsets.
Signed-off-by: Christian Ebner <c.ebner@proxmox.com>
Commit cd7dc87903 introduced the special treatment
for .pxarexclude files when stored in the archive.
The incorrect placement of a code snipplet from this path leads to an incorrect
offset and size stored in the goodbye table.
This fix places the start to the correct position, restoring the previously
correct behaviour.
Signed-off-by: Christian Ebner <c.ebner@proxmox.com>
.pxarexclude files allow to exclude or include parts of a subtree by matching
with a glob pattern. The globs are used according to the matches of fnmatch.
In addition '**' can be used to match multiple directories within the path.
Order of the entries matter, as later ones win over previous ones.
As the .pxarexclude files can be placed at any node of the directory hirarchy,
this implies that matching child entries win over parent entries.
The only exception to this behaviour is, when a parent entry already fully
matched the path, thereby excluding the child entries which would match
otherwise.
Signed-off-by: Christian Ebner <c.ebner@proxmox.com>
Not all filesystems support features such as xattrs,acl,... and trying to get
them is rather expensive.
By getting the supported features based on the filesystem magic and masking the
user set feature flags, unsupported features are excluded rather inexpensively
while encoding the archive.
Signed-off-by: Christian Ebner <c.ebner@proxmox.com>
Reading the quota project id relies on a ioctl call to get fsxattr.
On FUSE filesystems, ioctl calls might not be supported and will fail with
an errno indicating no support.
For these cases, the error is ignored and the default project id is used
(indicated by returning Ok(None)).
Signed-off-by: Christian Ebner <c.ebner@proxmox.com>
Allows to store/dump/restore the quota project id associated with an inode in
order to correctly restore project quotas.
The project id is obtained/set via ioctl calls getting/setting the fsxattr
associated with the given file descriptor.
Signed-off-by: Christian Ebner <c.ebner@proxmox.com>
Allows to individually set the flags for storing/dumping/restoring of
xattrs/fcaps/acls in the cli of pxar.
Changes logic so that each of them can be threated individually.
Signed-off-by: Christian Ebner <c.ebner@proxmox.com>
The encoder bailed if a endpoint which did not support xattrs was encountered.
Instead of bailing, we ignore these errors and simply do not store xattrs for
such endpoints.
Signed-off-by: Christian Ebner <c.ebner@proxmox.com>
Instead of testing and storing the feature_flags in the pxar archive, set and use
the feature flags within the encoder.
Signed-off-by: Christian Ebner <c.ebner@proxmox.com>
In addition to the format definition, the traits needed for sorting of xattr
entries by name are derived.
Signed-off-by: Christian Ebner <c.ebner@proxmox.com>
