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This aims to fix the warning of Python3:
ResourceWarning: unclosed file <_io.BufferedReader name=3>
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Specify unique name when creating Libvirt domain with virt-sandbox.
Otherwise the default name "sandbox" will be used and this might result
in collision with another instance of virt-bootstrap.
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Add "--overwrite" to enforce the overwrite of existing files.
Add the flag "--absolute-names" to disable the strip of leading '/'s
This is used to get around the error "Cannot open:Permission denied"
which occurs when the qemu driver is used by virt-sandbox. It is used
for unprivileged users to create isolated environment in which tar is
executed to extract the content from container image layers.
In particular this error occurs when the tar archive contains symbolic
link which has target path starting with '/'.
Steps to reproduce:
$ mkdir /tmp/foo
$ cd /tmp/foo
$ touch file
$ ln -s /tmp/foo/file link
$ tar -cf archive.tar link
$ mkdir /tmp/foo/dest
$ virt-sandbox -c qemu:///session \
-m host-bind:/mnt=/tmp/foo/dest \
-- /bin/tar xf /tmp/foo/archive.tar -C /mnt
Error message:
tar: link: Cannot open: Permission denied
tar: Exiting with failure status due to previous errors
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Reduce the number of import statements and improve readability.
Update the unit tests to match these changes.
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For containers bootstrapped in qcow2 format use the tool 'virt-edit'
to insert the hashed root password in the shadow file of the last layer
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These changes aim to avoid the requirement for root privileges when
setting the password of root user on root file system.
The "-R, --root" flag of chpasswd is using chroot to apply changes in
root file system and this requires root privileges. [1]
Instead compute hash of the root password using passlib [2] and insert
the value in the /etc/shadow file in the rootfs.
[1] https://en.wikipedia.org/wiki/Chroot#Limitations
[2] http://passlib.readthedocs.io/en/stable/lib/passlib.hosts.html
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Handle differences between version 1 and 2 of the Manifest file for
Docker registry.
Layers' blob sums in v1 are stored in a list "fsLayers" and the digest
is stored in following filed with name "blobSum". [1]
In v2 the layer list is stored in field with name "layers" and
ordered starting from the base image (opposite order of v1). The digest
is stored under a following field with name "digest". The size in bytes
is included in a field with name "size". [2]
[1] https://docs.docker.com/registry/spec/manifest-v2-1/#manifest-field-descriptions
[2] https://docs.docker.com/registry/spec/manifest-v2-2/#image-manifest-field-descriptions
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Encoded Unicode in Python 3 is represented as binary data. The
difference with Python2 is that any attempt to mix text and data in
Python 3.0 raises TypeError, whereas if you were to mix Unicode and
8-bit strings in Python 2.x, it would work if the 8-bit string happened
to contain only 7-bit (ASCII) bytes, but you would get
UnicodeDecodeError if it contained non-ASCII values.
Reference:
https://docs.python.org/release/3.0.1/whatsnew/3.0.html#text-vs-data-instead-of-unicode-vs-8-bit
Example:
Python 2:
>>> b'foo.bar'.split('.')
['foo', 'bar']
Python 3:
>>> b'foo.bar'.split('.')
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
TypeError: a bytes-like object is required, not 'str'
>>> b'foo.bar'.split(b'.')
[b'foo', b'bar']
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Remove traling space which occurs when the number is
smaller than kibibyte.
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When converting 0 KB with string input the result will be string
with zeroes.
>>> print(size_to_bytes('0', 'KB'))
000000...
Instead convert the string input to integer and then perform the conversion.
Rename the variable from "string" to "number" to avoid confusion.
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rename the function to match its counterpart size_to_bytes().
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Add new module to collect utility functions used in virt-bootstrap.
Move the function definitions from "sources" and "virt_bootstrap" to
the new module.
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