ouroboros/src/lib/ssm/tests, branch be

irmd: Deliver flow re-keying

2026-06-29T06:32:58+00:00

Re-key each encrypted flow's batch root periodically so a long-lived flow never exhausts or over-uses a single root. The IRMd re-runs the OAP exchange with the peer IRMd over the flow-update relay. The per-flow re-keying state is tracked in the registry (reg_flow). A re-key delivers one root seed from the OAP exchange. keyrot immediately HKDF-expands it into 128 node keys (KR_NODES_SZ = 128 × 32 B) and wipes the root. Then each of the 128 node keys is itself a root → HKDF-expanded into 64 (2^KEY_NODE_BITS) leaf keys, forked per direction; each leaf key is the actual AEAD key, good for 2^20 packets (the low counter bits are its nonce/seq). If the number of keys runs low, a re-key will be triggered (KEY_REKEY_WATERMARK). The rekey is signalled out of band to the application. The rbuff ACL is generalized into a flags word, so an RB_REKEY bit rides alongside the access RB_RD/RB_WR and FLOWDOWN/FLOWPEER bits. The RD and WR bits are revised ditching the fcntl historical weirdness. The seed is pulled via flow_read/flow_write, installed with crypt_rekey(). TX holds the old epoch until the peer is observed on the new one (or a grace deadline elapses), promoted from both the read and write paths so a recv-mostly flow still advances. Also fix the FLOW_ACCEPT and FLOW_ALLOC handlers, which on a key-buffer allocation failure returned from inside the cleanup-push region: that leaked the reply message and skipped both the stack-key scrub and the cleanup pop. Signed-off-by: Dimitri Staessens Signed-off-by: Sander Vrijders

lib: Fix SSM reclaim-orphans test

2026-06-29T06:32:55+00:00

Age the simulated-leaked blocks via alloc_ts so the aged-reclaim triggers in the test. Signed-off-by: Dimitri Staessens Signed-off-by: Sander Vrijders

lib: Use push/pop for ssm_pk_buff ops

2026-05-20T06:17:06+00:00

Renames the allocation for head/tail to push/pop instead of alloc/release as it's simpler and shorter. Took this approach insted of adopting the kernel's push/pull/put/trim. Signed-off-by: Dimitri Staessens Signed-off-by: Sander Vrijders

lib: Fix pool_sharding_test

2026-05-20T06:17:05+00:00

The test was not correctly taking the correct size class. Moved the select_size_class to the common header so tests can use it. Signed-off-by: Dimitri Staessens Signed-off-by: Sander Vrijders

lib: Rename ssm_pk_buff_get_idx to ssm_pk_buff_get_off

2026-05-06T07:06:04+00:00

The shared memory pool is now offset based instead of block index-based like the old shm_rdrbuff allocator. This renames the API more consistently. Also changes variables names to off instead of idx for consistency. Signed-off-by: Dimitri Staessens Signed-off-by: Sander Vrijders

lib: Fix ssm pool double free

2026-02-22T15:04:31+00:00

Remove double-free in ssm_pool_destroy — ssm_pool_close already frees the pool. The pool sharding test had a free spbs/ptrs on partial malloc failure. Now initializes children array to -1 to prevent reading uninitialized values. Signed-off-by: Dimitri Staessens Signed-off-by: Sander Vrijders

build: Update copyright to 2026

2026-02-18T06:54:56+00:00

Signed-off-by: Dimitri Staessens Signed-off-by: Sander Vrijders

lib: Fix SSM PUP creation on OS X

2026-02-13T08:22:29+00:00

OS X doesn't support chmod on shm files after creation. Since we already set the mode at creation, that call was redundant. Fixed the getpeereid() function was not accessible because of the guards. Fixed some differences between macOS and Linux with gid_t vs int usage. Signed-off-by: Dimitri Staessens Signed-off-by: Sander Vrijders

lib: Check fchown result when creating ssm_pool

2026-02-13T08:22:29+00:00

The result of fchown and fchmod weren't checked, causing some compilers to complain. Updated the test to create a PUP instead of "non-root" version of the GSPP. Removed the environment variable for the test suffix as this is not needed. Signed-off-by: Dimitri Staessens Signed-off-by: Sander Vrijders

build: Refactor CMake back to in-tree CMakeLists

2026-02-13T08:22:29+00:00

This moves the build definitions back to src/ subdirectories (CMakeLists.txt per component). Configuration and dependencies are kept out of tree. Configuration options are bundled into cmake/config/ modules. Dependencies are grouped by component (system/, crypt/, eth/, coverage/, etc.). It now consistently uses target-based commands (target_include_directories, target_link_libraries) instead of global include_directories(). Proper PRIVATE/PUBLIC visibility for executable link libraries. CONFIG_OUROBOROS_DEBUG now properly set based on being a valid debug config (not just checking the string name). It also adds OuroborosTargets export for find_package() support and CMake package config files (OuroborosConfig.cmake) for easier integration with CMake projects. The build logic now follows more idiomatic CMake practices with configuration separated from target definitions. Signed-off-by: Dimitri Staessens Signed-off-by: Sander Vrijders