Commit Graph

129 Commits

Author SHA1 Message Date
Steffen Eiden 48f1e0da0a rust/pv: Add unrecognized field to additional-data handling
Add an unrecognized field to the AdditionalData struct that contains any
data that is not known by the library. Generalize the intention of the
additional data read function and make extensions to Additional data
easier. Add tests for serialization.
Reviewed-by: Jan Höppner <hoeppner@linux.ibm.com>
Reviewed-by: Marc Hartmayer <mhartmay@linux.ibm.com>
Signed-off-by: Steffen Eiden <seiden@linux.ibm.com>
2024-11-22 17:20:00 +01:00
Steffen Eiden 413adbe7bb rust/pv: Rename additional-data size constant
Rename 'ATT_ADD_HASH_SIZE' to 'PHKH_SIZE'. The new name describes the
value better. It is the size of the Public Host-Key Hash and not the
size of a generic additional-data item.
Reviewed-by: Jan Höppner <hoeppner@linux.ibm.com>
Signed-off-by: Steffen Eiden <seiden@linux.ibm.com>
2024-11-22 17:20:00 +01:00
Marc Hartmayer 667a8d714b rust: Fix cargo clippy and cargo doc findings
Fix the new `cargo clippy` and `cargo doc` findings that were triggered
with the recent policy addition.

Signed-off-by: Marc Hartmayer <mhartmay@linux.ibm.com>
Reviewed-by: Steffen Eiden <seiden@linux.ibm.com>
Signed-off-by: Steffen Eiden <seiden@linux.ibm.com>
2024-11-22 17:20:00 +01:00
Marc Hartmayer 2155b83c1f rust: Add more useful linting rules
See

https://doc.rust-lang.org/rustc/lints/groups.html
https://doc.rust-lang.org/rustc/lints/listing/allowed-by-default.html#non-ascii-idents

For `missing_docs` there must a priority specified to fix the following
error:

  warning: lint group `unused` has the same priority (0) as a lint
    --> Cargo.toml:25:1
     |
  19 | missing_docs = "deny"
     | ------------ has the same priority as this lint
  ...
  25 | unused = "warn"
     | ^^^^^^   ------ has an implicit priority of 0
     |
     = note: the order of the lints in the table is ignored by Cargo
     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#lint_groups_priority
     = note: `#[warn(clippy::lint_groups_priority)]` on by default
  help: to have lints override the group set `unused` to a lower priority
     |
  25 | unused = { level = "warn", priority = -1 }
     |          ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Signed-off-by: Marc Hartmayer <mhartmay@linux.ibm.com>
Reviewed-by: Steffen Eiden <seiden@linux.ibm.com>
Acked-by: Finn Callies <fcallies@linux.ibm.com>
Signed-off-by: Steffen Eiden <seiden@linux.ibm.com>
2024-11-22 17:20:00 +01:00
Marc Hartmayer e6c17461a3 rust: Provide and use a workspace.lints table
Provide and use a `workspace.lints` table. This makes it easier to
maintain and to enforce one coding style. Let's explicitly disable the
`missing_docs` linting rule for tests.

MSRV for the lints table is 1.74 [1]

[1] https://doc.rust-lang.org/cargo/reference/workspaces.html#the-lints-table

Signed-off-by: Marc Hartmayer <mhartmay@linux.ibm.com>
Reviewed-by: Steffen Eiden <seiden@linux.ibm.com>
Acked-by: Finn Callies <fcallies@linux.ibm.com>
Signed-off-by: Steffen Eiden <seiden@linux.ibm.com>
2024-11-22 17:20:00 +01:00
Steffen Eiden 75820cf62d Makefile: Do not quote install targets
Sync all install targets implementations. Some did quote the target
directories some don't. Remove all quotations. This fixes wrong install
locations of install paths that have a '~'. With quotes '~' is
interpreted literally instead of using the home dir.

Reviewed-by: Marc Hartmayer <mhartmay@linux.ibm.com>
Reviewed-by: Jan Höppner <hoeppner@linux.ibm.com>
Signed-off-by: Steffen Eiden <seiden@linux.ibm.com>
2024-11-22 17:19:57 +01:00
Steffen Eiden 3f0dc6b3af rust/pv: Get request-tag for add-secret requests
Enables API users to get the request tag of an Add-Secret request.
This enables them to check for attestation policies.
Reviewed-by: Marc Hartmayer <mhartmay@linux.ibm.com>
Signed-off-by: Steffen Eiden <seiden@linux.ibm.com>
2024-11-22 17:18:37 +01:00
Steffen Eiden db6c500e6d rust/pv: Get authenticated data from a binary attestation request
Allows API users to inspect the value of additional data to use it as
part of a policy check.
Reviewed-by: Marc Hartmayer <mhartmay@linux.ibm.com>
Signed-off-by: Steffen Eiden <seiden@linux.ibm.com>
2024-11-22 17:18:37 +01:00
Steffen Eiden 578b77072a pv/utils: Improve HexSlice implementation
Add more unit-tests and useful derives.

Reviewed-by: Marc Hartmayer <mhartmay@linux.ibm.com>
Signed-off-by: Steffen Eiden <seiden@linux.ibm.com>
2024-11-22 17:18:37 +01:00
Marc Hartmayer f94e9e9352 rust/pv: Explicitly reduce BinReqValues visibility
This struct is not exported. Prevent any accidental exports by reducing
the visibility to pub(crate).

Reviewed-by: Steffen Eiden <seiden@linux.ibm.com>
Signed-off-by: Marc Hartmayer <mhartmay@linux.ibm.com>
Signed-off-by: Steffen Eiden <seiden@linux.ibm.com>
2024-11-22 17:18:37 +01:00
Marc Hartmayer 079ae1e24d rust/utils: Improve TemporaryDirectory APIs
Rename the previous "default" `new` constructor [1] to `with_prefix` and
add a new default `new` constructor that takes no argument is therefore
easier to use.

In addition, improve the overall documentation, add more tests, and
examples to the code.

[1] https://doc.rust-lang.org/nomicon/constructors.html
Reviewed-by: Steffen Eiden <seiden@linux.ibm.com>
Signed-off-by: Marc Hartmayer <mhartmay@linux.ibm.com>
Signed-off-by: Steffen Eiden <seiden@linux.ibm.com>
2024-11-22 17:18:37 +01:00
Marc Hartmayer 2f3c189fda rust/crypto: Export gen_ec_key and open-code the SECP521R1 NID
Reviewed-by: Steffen Eiden <seiden@linux.ibm.com>
Signed-off-by: Marc Hartmayer <mhartmay@linux.ibm.com>
Signed-off-by: Steffen Eiden <seiden@linux.ibm.com>
2024-11-22 17:18:37 +01:00
Marc Hartmayer dec796d52f rust/crypto: Export random_array
The function is useful, therefore export it.
Reviewed-by: Steffen Eiden <seiden@linux.ibm.com>
Signed-off-by: Marc Hartmayer <mhartmay@linux.ibm.com>
Signed-off-by: Steffen Eiden <seiden@linux.ibm.com>
2024-11-22 17:18:37 +01:00
Marc Hartmayer 385ba6b51f rust/crypto: Replace From<Aes256Key> for SymKey with enum_dispatch macro
Use the `enum_dispatch` macro for providing the `From` and `TryInto`
functionalities. In addition, it makes dynamic dispatching using enums
much easier.
Reviewed-by: Steffen Eiden <seiden@linux.ibm.com>
Signed-off-by: Marc Hartmayer <mhartmay@linux.ibm.com>
Signed-off-by: Steffen Eiden <seiden@linux.ibm.com>
2024-11-22 17:18:37 +01:00
Marc Hartmayer 050441922b rust/crypto: Add key_type method to SymKey impl
This function is easier to be used than a match! statement.
Reviewed-by: Steffen Eiden <seiden@linux.ibm.com>
Signed-off-by: Marc Hartmayer <mhartmay@linux.ibm.com>
Signed-off-by: Steffen Eiden <seiden@linux.ibm.com>
2024-11-22 17:18:37 +01:00
Marc Hartmayer 567cbce8a8 rust/crypto: Implement From<SymKeyType> for Nid
Implement `From<SymKeyType> for Nid`. This makes it easier to implement
generalized functions.
Reviewed-by: Steffen Eiden <seiden@linux.ibm.com>
Signed-off-by: Marc Hartmayer <mhartmay@linux.ibm.com>
Signed-off-by: Steffen Eiden <seiden@linux.ibm.com>
2024-11-22 17:18:37 +01:00
Marc Hartmayer eee29e0399 rust/crypto: Rename derive_key to derive_aes256_gcm_key and export it
This is currently the only key type supported, therefore rename the
function to make this clear. In addition, improve the documentation of
the function as function is now exported.
Signed-off-by: Marc Hartmayer <mhartmay@linux.ibm.com>
Reviewed-by: Steffen Eiden <seiden@linux.ibm.com>
Signed-off-by: Steffen Eiden <seiden@linux.ibm.com>
2024-11-22 17:18:37 +01:00
Marc Hartmayer a0a8aa47a8 rust/crypto: Add Aes256Xts to SymKey
This type can be used for AES 256 XTS encryption.
Reviewed-by: Steffen Eiden <seiden@linux.ibm.com>
Signed-off-by: Marc Hartmayer <mhartmay@linux.ibm.com>
Signed-off-by: Steffen Eiden <seiden@linux.ibm.com>
2024-11-22 17:18:37 +01:00
Marc Hartmayer fe2946f76c rust/pv: Fix some comments
The library is used by multiple PV related tools, not only for managing
the guest secret store.
Reviewed-by: Steffen Eiden <seiden@linux.ibm.com>
Signed-off-by: Marc Hartmayer <mhartmay@linux.ibm.com>
Signed-off-by: Steffen Eiden <seiden@linux.ibm.com>
2024-11-22 17:18:37 +01:00
Steffen Eiden 17aba9322e rust/pv: Export EcPubKeyCoord
Make EcPubKeyCoord available, after renaming it from EcdhPubkeyCoord.
This enables API users to calculate the hash of a public host-key and
compare it to a hash from attestation.
Reviewed-by: Marc Hartmayer <mhartmay@linux.ibm.com>
Signed-off-by: Steffen Eiden <seiden@linux.ibm.com>
2024-11-22 17:18:37 +01:00
Steffen Eiden 53d803abf3 rust: Streamline and cleanup verbosity handling
Create one implementation for the verbose option to be used by all
tools. While at it, add a quiet option to decrease the verbosity.

Signed-off-by: Marc Hartmayer <mhartmay@linux.ibm.com>
Signed-off-by: Steffen Eiden <seiden@linux.ibm.com>
2024-11-22 17:18:37 +01:00
Marc Hartmayer b378ff788e rust/pv_core: Add Error section for decode_hex documentation
Signed-off-by: Marc Hartmayer <mhartmay@linux.ibm.com>
Signed-off-by: Steffen Eiden <seiden@linux.ibm.com>
2024-11-22 17:17:19 +01:00
Marc Hartmayer 20f1c0e2ea rust/pv: Replace PKey with Self
Signed-off-by: Marc Hartmayer <mhartmay@linux.ibm.com>
Signed-off-by: Steffen Eiden <seiden@linux.ibm.com>
2024-11-22 17:15:59 +01:00
Steffen Eiden 5751c08627 s390-tools/rust: Define MSRV as 1.75.0
Define and set the minimal supported Rust version (MSRV) to 1.75.0. This
is the (current) minimal supported version over all supported distros
that use rust in s390-tools.

Reviewed-by: Jan Höppner <hoeppner@linux.ibm.com>
Reviewed-by: Marc Hartmayer <mhartmay@linux.ibm.com>
Signed-off-by: Steffen Eiden <seiden@linux.ibm.com>
2024-11-22 17:15:59 +01:00
Steffen Eiden 5e97205530 rust/pv_core: Implement Zeroroize for String
String is more or less a Vec<u8> with some extra invariants (i.e. only
UFF-8 chars). Zeroroize is implemented by calling the Vec<u8>
implementation. The zero byte is a valid UTF-8 symbol. The String
invariant is uphold by the clearing code.

Also, implement a into_inner function for clone-able inner types.
This allows converting confidential types into no-confidential types.
As Drop is implemented this requires a clone (see E0509).

Signed-off-by: Steffen Eiden <seiden@linux.ibm.com>
Reviewed-by: Marc Hartmayer <mhartmay@linux.ibm.com>
Signed-off-by: Steffen Eiden <seiden@linux.ibm.com>
2024-11-22 17:15:59 +01:00
Steffen Eiden 0495947604 rust/pv_core: Generalize Confidential
Generalize the `Confidential` impl over Vec<T> and [COUNT; T] instead of
specializing T to u8.

Signed-off-by: Steffen Eiden <seiden@linux.ibm.com>
Reviewed-by: Marc Hartmayer <mhartmay@linux.ibm.com>
Signed-off-by: Steffen Eiden <seiden@linux.ibm.com>
2024-11-22 17:15:59 +01:00
Steffen Eiden 516bd8c2cf rust/pv: Move confidential.rs to pv_core
Migrate Confidential to pv_core crate. This has no impact on the public
API of pv as the migrated symbols are reexported.
This enables pv_core to manage confidential data as well.

Signed-off-by: Steffen Eiden <seiden@linux.ibm.com>
Reviewed-by: Marc Hartmayer <mhartmay@linux.ibm.com>
Signed-off-by: Steffen Eiden <seiden@linux.ibm.com>
2024-11-22 17:15:59 +01:00
Marc Hartmayer d1b5f80fe5 rust/utils: Use PathBuf for CertificateOptions
It's more common to use a `PathBuf` for paths than a `String`.

Signed-off-by: Marc Hartmayer <mhartmay@linux.ibm.com>
Reviewed-by: Steffen Eiden <seiden@linux.ibm.com>
Signed-off-by: Steffen Eiden <seiden@linux.ibm.com>
2024-11-22 17:15:58 +01:00
Steffen Eiden 17e575e350 rust/pv: Fix EC signature test
The size of an EC-secp521r1 signature can be up to 139 bytes (if ASN1
encoded). There is no lower bound, although sizes lower than 137 are
very unlikely but possible.

Signed-off-by: Steffen Eiden <seiden@linux.ibm.com>
2024-11-22 17:15:58 +01:00
Finn Callies 57a32d98ef rust/cpacfinfo: New CLI tool to provide CPACF information
The new cpacfinfo command provides information about CPACF, such as which CPACF functions are installed, and make use of the new MSA 13 Query Authentication Information function.

Signed-off-by: Finn Callies <fcallies@linux.ibm.com>
Reviewed-by: Harald Freudenberger <freude@linux.ibm.com>
Signed-off-by: Steffen Eiden <seiden@linux.ibm.com>
2024-11-22 17:15:58 +01:00
Finn Callies e7cef378e0 rust/utils: Add space mode for HexSlice display
Add a new format option to HexSlice to print every byte with a separated
space in between. Additionally the old format option 'alternate'
together with the new one results in another new format which prints
every byte separated by a space AND every byte has a leading '0x'.

Signed-off-by: Finn Callies <fcallies@linux.ibm.com>
Co-developed-by: Steffen Eiden <seiden@linux.ibm.com>
Reviewed-by: Steffen Eiden <seiden@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
2024-10-25 11:57:44 +02:00
Marc Hartmayer 8da2f44ae2 rust/pv_core: Add decode_hex
It's uncommon and prone to error to silently stop decoding/parsing a
hex-string if there is an invalid character. Therefore, add a new
function `decode_hex` which fixes this behavior and use it in the code.

Signed-off-by: Marc Hartmayer <mhartmay@linux.ibm.com>
Reviewed-by: Steffen Eiden <seiden@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
2024-10-25 11:57:44 +02:00
Marc Hartmayer a4a29d1e05 rust/pv: Implement EcdhPubkeyCord from and to PKey conversions
Make it possible to convert internal key format to OpenSSL public key
format and vice versa. E.g. this can be useful when reading UV data
structures.

Signed-off-by: Marc Hartmayer <mhartmay@linux.ibm.com>
Reviewed-by: Steffen Eiden <seiden@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
2024-10-25 11:57:44 +02:00
Marc Hartmayer 89f475cee1 pv/req: Move constant out of function definition
This makes it possible to reuse the constant. In addition, change the
type from i32 to usize since the value describes a size.

Signed-off-by: Marc Hartmayer <mhartmay@linux.ibm.com>
Reviewed-by: Steffen Eiden <seiden@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
2024-10-25 11:57:44 +02:00
Marc Hartmayer 96dbabae8d pv/crypto: Improve comment about the AES 256 GCM key
The size of an AES key depends on the mode of operation, so add this
information at least in the comments, as the API cannot be changed as it
is already published.

Signed-off-by: Marc Hartmayer <mhartmay@linux.ibm.com>
Reviewed-by: Steffen Eiden <seiden@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
2024-10-25 11:57:44 +02:00
Steffen Eiden d30d272523 rust: Use Self wherever possible
Use Self instead of the struct name whenever possible.
Automagically replace struct name with Self:
`cargo clippy --fix -- -W clippy::use_self`

This streamlines the code.

Reviewed-by: Marc Hartmayer <mhartmay@linux.ibm.com>
Reviewed-by: Jan Höppner <hoeppner@linux.ibm.com>
Signed-off-by: Steffen Eiden <seiden@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
2024-10-25 11:57:44 +02:00
Steffen Eiden 0031c762cf rust/pv_core: Fix rusttest owned file descriptor already closed
Newer rust std libary code checks if a fd is already closes and panics.
Test code created a file with fd=17 and relied that test code never
touched the file. This cannot be done anymore. Just use the working dir
as backing file.

Reviewed-by: Jan Höppner <hoeppner@linux.ibm.com>
Signed-off-by: Steffen Eiden <seiden@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
2024-10-01 12:16:19 +02:00
Steffen Eiden 7031429d1e rust/pv: Fix new warnings for rustc 1.80
`sizeof` was added into the prelude in rustc 1.80.
This triggers a lint-warning for `unused_qualifications` if rustc 1.80+
is used. Fix this warning by using a use statement to stay compatible
for <1.80.

Reviewed-by: Jan Höppner <hoeppner@linux.ibm.com>
Signed-off-by: Steffen Eiden <seiden@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
2024-10-01 12:16:19 +02:00
Steffen Eiden 73d8597db1 rust/pv_core: Clarify error reason for 003* return codes
The RCs 30, 31, 32 may be caused by a malicious host or host bug.
Make this clear and advise to stop the SE-guest.

Reviewed-by: Jan Höppner <hoeppner@linux.ibm.com>
Signed-off-by: Steffen Eiden <seiden@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
2024-10-01 12:16:19 +02:00
Marc Hartmayer 77d0d1d1a1 rust/Makefile: Consider HAVE_CARGO in the clean target
This fixes `make clean` errors when cargo is not available:

  $ make clean
  ...
  | make[1]: Entering directory '/home/mhartmay/storage/git/poky/build/workspace/sources/s390-tools/rust'
  | cargo clean  --release
  | /bin/bash: cargo: command not found
  | make[1]: *** [Makefile:72: clean] Error 127

Reviewed-by: Steffen Eiden <seiden@linux.ibm.com>
Signed-off-by: Marc Hartmayer <mhartmay@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
2024-10-01 12:16:19 +02:00
Finn Callies 77a7e11a51 rust/Makefile: Build pvapconfig only on s390x
Configuring the AP bus only makes sense on s390x.

Signed-off-by: Finn Callies <fcallies@linux.ibm.com>
Suggested-by: Steffen Eiden <seiden@linux.ibm.com>
Reviewed-by: Harald Freudenberger <freude@linux.ibm.com>
Reviewed-by: Steffen Eiden <seiden@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
2024-10-01 12:16:19 +02:00
Steffen Eiden 6a55d0c2e5 rust/pv: Lower most lints to warn
Lower the lint level to warn for the styling lints.
This avoids compile issues during packaging for newer tooling with
potential more lint findings.
Still deny compiling if a public symbol has no documentation.

Fixes: https://github.com/ibm-s390-linux/s390-tools/issues/173
Reviewed-by: Jan Höppner <hoeppner@linux.ibm.com>
Signed-off-by: Steffen Eiden <seiden@linux.ibm.com>
2024-08-26 10:40:21 +02:00
Harald Freudenberger f8d5b4b341 rust/pvapconfig: add dead_code pragmas to suppress warnings
The ap.rs code is already prepared for possible support
for CCA mode APQNs for the Secure Execution environment.
However, this patch marks these fields and structs with
pragma allow(dead_code) to prevent warnings during cargo
build of pvapconfig.

Signed-off-by: Harald Freudenberger <freude@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
2024-08-01 14:26:06 +02:00
Steffen Eiden 7e31c425c9 rust/pv: Try again if first CRL-URI is invalid
The previous implementation did stop after the first download was
successful, even if it did not contain a CRL. This behavior renders a
second, third, ... link as backup location useless as the code ignores
them if the URI e.g. contains a error message. That results in not
having a CRL and probably a failed certificate verification.

Fix this by trying again if the download was successful but did not
contain a CRL

Reviewed-by: Jan Höppner <hoeppner@linux.ibm.com>
Signed-off-by: Steffen Eiden <seiden@linux.ibm.com>
2024-06-24 16:23:24 +02:00
Steffen Eiden 7a4ec55d77 rust/pvattest: Add short option for --arpk
pvattest-C had a -a option for --arpk which the Rust implementation
missed.
Add this short option.

Reviewed-by: Marc Hartmayer <mhartmay@linux.ibm.com>
Signed-off-by: Steffen Eiden <seiden@linux.ibm.com>
2024-06-24 16:23:24 +02:00
Marc Hartmayer f83af8e076 rust: Generate shell (e.g. bash) completion scripts via build.rs for all tools
It might be handy to have shell completion support for the Rust PV
tools.

Reviewed-by: Steffen Eiden <seiden@linux.ibm.com>
Signed-off-by: Marc Hartmayer <mhartmay@linux.ibm.com>
Signed-off-by: Steffen Eiden <seiden@linux.ibm.com>
2024-05-27 16:54:25 +02:00
Marc Hartmayer 4d2c92f6d5 rust/pvapconfig: Fix expected out doc comment
error[E0753]: expected outer doc comment

Signed-off-by: Marc Hartmayer <mhartmay@linux.ibm.com>
Reviewed-by: Steffen Eiden <seiden@linux.ibm.com>
Signed-off-by: Steffen Eiden <seiden@linux.ibm.com>
2024-05-27 16:54:21 +02:00
Steffen Eiden 503e241db1 rust: Improve code formatting
Do some formatting that are in experimental stage but improve the code
readability.

Use rustfmt with a nightly toolchain and enable:

format_code_in_doc_comments = true
reorder_impl_items = true
comment_width = 100
wrap_comments = true
normalize_comments = true

(see .rustfmt.toml)

Signed-off-by: Marc Hartmayer <mhartmay@linux.ibm.com>
Signed-off-by: Steffen Eiden <seiden@linux.ibm.com>
2024-05-27 16:54:17 +02:00
Steffen Eiden c382e7ef44 Remove pvattest-C and switch to pvattest-Rust implementation
Removes the C implementation of pvattest.
Use the Rust implementation instead.

Closes: https://github.com/ibm-s390-linux/s390-tools/issues/164
Acked-by: Marc Hartmayer <mhartmay@linux.ibm.com>
Signed-off-by: Steffen Eiden <seiden@linux.ibm.com>
2024-05-27 16:54:06 +02:00
Steffen Eiden 16610a211f rust: pvattest-Rust
Add a CLI compatible Rust implementation of pvattest-C.
 - All (non-experimental) options are supported and work exactly as in
   the C implementation. For some options/parameters new variants are
   available.
 - `perform` now also accepts positional arguments, while keep accepting
   -i and -o  that was mandatory in the C implementation.
 - `version` may also be a command instead of an option now.
 - -V is deprecated
 - -v increases verbosity instead of showing the version
 - all experimental options are dropped

Acked-by: Qi Feng Huo <huoqif@cn.ibm.com>
Acked-by: Marc Hartmayer <mhartmay@linux.ibm.com>
Signed-off-by: Steffen Eiden <seiden@linux.ibm.com>
2024-05-27 16:54:01 +02:00