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When the root user creates a login protector for a non-root user, make
sure to chown() the protector file to make it owned by the user.
Without this, the protector cannot be updated by the user, which causes
it to get out of sync if the user changes their login passphrase.
Fixes https://github.com/google/fscrypt/issues/319
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Fixes #123
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As per the feedback at https://github.com/google/fscrypt/issues/115
where users didn't understand that the recovery passphrase is important,
restore the original behavior where recovery passphrase generation
happens automatically without a prompt. This applies to the case where
'fscrypt encrypt' is using a login protector on a non-root filesystem.
However, leave the --no-recovery option so that the recovery passphrase
can still be disabled if the user really wants to. Also, clarify the
information provided about the recovery passphrase.
Update https://github.com/google/fscrypt/issues/115
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These confuse the latest version of shellcheck into thinking that
functions which take no arguments actually take arguments, which
triggers a bunch of warnings like "Use func "$@" if function's $1 should
mean script's $1", which causes 'make lint' to fail. These checks
aren't too useful, so just remove them.
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Otherwise the cli tests fail when executed from GitHub Actions.
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Apparently, on some distros 'su' doesn't preserve $PATH. So, manually
export it in the command. Also, ensure that the shell stays as bash.
This is needed for some of the CLI tests to pass in Travis CI.
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When 'fscrypt status DIR' detects that a v1-encrypted directory is still
usable but its key seems to be absent, it shows the status as
"Unlocked: Partially (incompletely locked)". But actually it can also
be the case that the directory is unlocked by another user. Adjust the
status message accordingly.
This commit also fixes cli-tests/t_v1_policy.
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The test user's user keyring is still linked into root's user keyring at
the end of the test. This is making the test flaky, as there is a
failure that only occurs the first time it is run. Fix the test to
restore the initial state. This makes it consistently fail (to be fixed
by the next commit).
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Use %q, in case the paths contain whitespace. Also clean the directory
path to remove trailing slashes before appending the ".new" suffix.
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Update https://github.com/google/fscrypt/issues/220
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In checkEncryptable(), check whether the directory is already encrypted
before checking whether it's empty.
Also improve the error message for when a directory is nonempty.
Finally, translate keyring.ErrKeyAddedByOtherUsers and
keyring.ErrKeyFilesOpen into errors which include the directory.
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Introduce filesystem.ErrEncryptionNotEnabled and
filesystem.ErrEncryptionNotSupported which include the Mount as context,
and translate the corresponding metadata/ errors into them. Then make
these errors show much better suggestions.
Also replace lots of other filesystem/ errors with either custom types
or with unnamed one-off errors that include more context. Fix backwards
wrapping in lots of cases.
Finally, don't include the mountpoint in places where it's not useful,
like OS-level errors that already include the path.
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ErrBadOwners:
Rename to ErrDirectoryNotOwned for clarity, move it from
cmd/fscrypt/ to metadata/ where it better belongs, and improve
the message.
ErrEncrypted:
Rename to ErrAlreadyEncrypted for clarity, and include the path.
ErrNotEncrypted:
Include the path.
ErrBadEncryptionOptions:
Include the path and bad options.
ErrEncryptionNotSupported:
ErrEncryptionNotEnabled:
Don't wrap with "get encryption policy %s", in preparation for
wrapping these with filesystem-level context instead.
Also avoid mixing together the error handling for the "get policy" and
"set policy" ioctls. Make it very clear how we're handling the errors
from each ioctl.
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ErrAccessUserKeyring:
Include the user, and fix the backwards wrapping.
ErrSessionUserKeyring:
Include the user.
ErrKeyAdd:
ErrKeyRemove:
ErrKeySearch:
ErrLinkUserKeyring:
Replace these with one-off unnamed errors because they are
never checked for, and this makes it easier for the callers to
provide better messages, e.g. fixing the backwards wrapping.
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ErrMissingPolicyMetadata:
Include the mount, directory path, and metadata path. Also move
the explanation into actions/ since it doesn't refer to any CLI
command.
ErrPolicyMetadataMismatch:
Include a lot more information. Also start checking for
consistency of the policy key descriptors, not just the
encryption options. Add a test for this.
ErrDifferentFilesystem:
Include the mountpoints.
ErrOnlyProtector:
Clarify the message and include the protector descriptor.
ErrAlreadyProtected:
ErrNotProtected:
Include the policy and protector descriptors.
ErrAccessDeniedPossiblyV2:
Make it slightly clearer what failed. Also move the explanation
into actions/ since it doesn't refer to any CLI command.
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ErrProtectorName:
Rename to ErrLoginProtectorName for clarity, and include the
name and user.
ErrMissingProtectorName:
Include the correct protector source.
ErrDuplicateName:
Rename to ErrProtectorNameExists for clarity, and remove a level
of wrapping by including the name directly.
ErrDuplicateUID:
Rename to ErrLoginProtectorExists for clarity, and remove a
level of wrapping by including the user directly.
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ErrBadConfig:
Fix backwards wrapping, include the bad config, and make it
clear that this is an internal error.
ErrBadConfigFile:
Fix backwards wrapping, include the config file location, and
adjust the suggestion slightly.
ErrConfigFileExists:
Include the config file location.
ErrNoConfigFile:
Include the config file location, and adjust the suggestion
slightly.
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'fscrypt lock' on a v1-encrypted directory doesn't warn about in-use
files, as the kernel doesn't provide a way to easily detect it.
Instead, implement a heuristic where we check whether a subdirectory can
be created. If yes, then the directory must not be fully locked.
Make both 'fscrypt lock' and 'fscrypt status' use this heuristic.
Resolves https://github.com/google/fscrypt/issues/215
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Test using v1 encryption policies (deprecated) with
use_fs_keyring_for_v1_policies = true.
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Test using v1 encryption policies (deprecated).
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Test unlocking a directory.
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Test getting global, filesystem, and unencrypted directory status when
the filesystem is or isn't set up for fscrypt.
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Test 'fscrypt setup'.
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Test that the passphrase hashing seems to take long enough.
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Test that fscrypt fails when the filesystem doesn't support encryption.
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Test that fscrypt fails when the filesystem doesn't have the encrypt
feature enabled. Then test enabling it.
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Test locking a directory.
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Test encrypting a directory using a raw_key protector.
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Test encrypting a directory using a login (pam_passphrase) protector.
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Test encrypting a directory using a custom_passphrase protector.
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Add general tests for 'fscrypt encrypt'. For protector-specific tests,
see t_encrypt_custom, t_encrypt_login, and t_encrypt_raw_key.
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Test changing the passphrase of a custom_passphrase protector.
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Add a framework for writing automated tests of the fscrypt command-line
tool. See cli-tests/README.md for details.
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