100 Commits

Author	SHA1	Message	Date
Ophestra	905b9f9785	container/initoverlay: invalid argument type ... This eliminates generic WrapErr from overlay. Signed-off-by: Ophestra <cat@gensokyo.uk>	2025-08-29 02:56:56 +09:00
Ophestra	1c7e634f09	container/dispatcher: check test errors via reflect ... Using the errors package might conceal some incorrect behaviour. Signed-off-by: Ophestra <cat@gensokyo.uk>	2025-08-29 02:35:24 +09:00
Ophestra	8d472ebf2b	container/inittmpfs: unwrap out of bounds error ... This eliminates generic WrapErr from tmpfs. Signed-off-by: Ophestra <cat@gensokyo.uk>	2025-08-29 02:15:48 +09:00
Ophestra	4da6463135	container/init: unwrap path errors ... These are also now handled by init properly, so wrapping them in self is meaningless and unreachable. Signed-off-by: Ophestra <cat@gensokyo.uk>	2025-08-29 02:04:09 +09:00
Ophestra	eb3385d490	container/initsymlink: unwrap mount errors ... The mount function now wraps its own errors in a much more descriptive type with proper message formatting. Wrapping them no longer makes any sense. Signed-off-by: Ophestra <cat@gensokyo.uk>	2025-08-29 01:46:54 +09:00
Ophestra	b8669338da	container/initsymlink: unwrap absolute error ... This is now handled properly by the init. Signed-off-by: Ophestra <cat@gensokyo.uk>	2025-08-29 01:43:11 +09:00
Ophestra	f24dd4ab8c	container/init: handle unwrapped errors ... This is much cleaner from both the return statement and the error handling. Signed-off-by: Ophestra <cat@gensokyo.uk>	2025-08-29 01:37:13 +09:00
Ophestra	a462341a0a	container: repeat and impossible state types ... This moves repeated Op errors and impossible internal state errors off of msg. Signed-off-by: Ophestra <cat@gensokyo.uk>	2025-08-29 01:12:02 +09:00
Ophestra	84ad9791e2	container: wrap mount syscall errno ... This is the first step to deprecating the generalised error wrapping error message pattern. Signed-off-by: Ophestra <cat@gensokyo.uk>	2025-08-29 01:06:12 +09:00
Ophestra	9bc8532d56	container/initdev: mount tmpfs on shm for ro dev ... Programs expect /dev/shm to be a writable tmpfs. Signed-off-by: Ophestra <cat@gensokyo.uk>	2025-08-26 03:27:07 +09:00
Ophestra	2e0a4795f6	container/initbind: optional ensure host directory ... This is used for ensuring persistent data directories specific to the container. Signed-off-by: Ophestra <cat@gensokyo.uk>	2025-08-26 00:44:45 +09:00
Ophestra	8db906ee64	container/dispatcher: remove exit stub test log ... Turns out testing.T does not like being called in defer. Signed-off-by: Ophestra <cat@gensokyo.uk>	2025-08-25 17:33:35 +09:00
Ophestra	cedfceded5	container/autoroot: remove prefix field ... This field has been a noop for a long time. Remove it to prevent further confusion. Signed-off-by: Ophestra <cat@gensokyo.uk>	2025-08-25 03:39:20 +09:00
Ophestra	33d2dcce1b	container/initoverlay: internal bypass sysroot prefix ... This is for supporting overlay mounts for autoroot. Signed-off-by: Ophestra <cat@gensokyo.uk>	2025-08-25 02:42:22 +09:00
Ophestra	2baa2d7063	container/init: measure init behaviour ... This used to be entirely done via integration tests, with almost no hope of error injection and coverage profile. These tests significantly increase confidence of future work in this area. Signed-off-by: Ophestra <cat@gensokyo.uk>	2025-08-24 04:52:32 +09:00
Ophestra	0166833431	container/dispatcher: start goroutine in dispatcher ... This allows instrumentation of calls from goroutine without relying on finalizers. Signed-off-by: Ophestra <cat@gensokyo.uk>	2025-08-23 21:58:40 +09:00
Ophestra	b3da3da525	container/init: avoid multiple lastcap calls ... This reduces the size of []kexpect in the test suite. Signed-off-by: Ophestra <cat@gensokyo.uk>	2025-08-23 11:09:11 +09:00
Ophestra	1b3902df78	container/dispatcher: instrument each goroutine individually ... Scheduler nondeterminism cannot be accounted for, so do this instead. There should not be any performance penalty as these calls are optimised out for direct. Signed-off-by: Ophestra <cat@gensokyo.uk>	2025-08-23 11:07:16 +09:00
Ophestra	ea1e3ebae9	container/params: pass fd instead of file ... The file is very difficult to stub. Pass fd instead as it is the value that is actually useful. Signed-off-by: Ophestra <cat@gensokyo.uk>	2025-08-23 00:16:46 +09:00
Ophestra	1c692bfb79	container/init: call lockOSThread through dispatcher ... This degrades test performance if not stubbed out. Signed-off-by: Ophestra <cat@gensokyo.uk>	2025-08-22 22:24:14 +09:00
Ophestra	141a18999f	container: move integration test helpers ... With the new instrumentation it is now possible to run init code outside integration tests. Signed-off-by: Ophestra <cat@gensokyo.uk>	2025-08-22 22:07:19 +09:00
Ophestra	afe23600d2	container/path: use syscall dispatcher ... This allows path and mount functions to be instrumented. Signed-off-by: Ophestra <cat@gensokyo.uk>	2025-08-22 22:02:21 +09:00
Ophestra	09d2844981	container/init: wrap syscall helper functions ... This allows tests to stub all kernel behaviour, enabling measurement of all function call arguments and error injection. Signed-off-by: Ophestra <cat@gensokyo.uk>	2025-08-22 19:27:31 +09:00
Ophestra	5b73316ae0	container/syscall: doc comments from manpages ... These are pulled straight from the manpages. Signed-off-by: Ophestra <cat@gensokyo.uk>	2025-08-21 00:33:46 +09:00
Ophestra	5d8a2199b6	container/init: op interface valid method ... Check ops early and eliminate duplicate checks. Signed-off-by: Ophestra <cat@gensokyo.uk>	2025-08-21 00:18:50 +09:00
Ophestra	a1482ecdd0	container/inittmpfs: check path equivalence by value ... Fixes regression introduced while integrating Absolute. Signed-off-by: Ophestra <cat@gensokyo.uk>	2025-08-20 20:17:28 +09:00
Ophestra	a07f9ed84c	container/initsymlink: check path equivalence by value ... Fixes regression introduced while integrating Absolute. Signed-off-by: Ophestra <cat@gensokyo.uk>	2025-08-20 20:03:02 +09:00
Ophestra	51304b03af	container/initremount: check path equivalence by value ... Fixes regression introduced while integrating Absolute. Signed-off-by: Ophestra <cat@gensokyo.uk>	2025-08-20 19:55:51 +09:00
Ophestra	c6397b941f	container/initproc: check path equivalence by value ... Fixes regression introduced while integrating Absolute. Signed-off-by: Ophestra <cat@gensokyo.uk>	2025-08-20 19:29:45 +09:00
Ophestra	d65e5f817a	container/initplace: check path equivalence by value ... Fixes regression introduced while integrating Absolute. Signed-off-by: Ophestra <cat@gensokyo.uk>	2025-08-20 19:19:27 +09:00
Ophestra	696e593898	container/initoverlay: check path equivalence by value ... Fixes regression introduced while integrating Absolute. Signed-off-by: Ophestra <cat@gensokyo.uk>	2025-08-20 17:33:15 +09:00
Ophestra	97ab24feef	container/init: use absolute compare method ... More checks are also added. Signed-off-by: Ophestra <cat@gensokyo.uk>	2025-08-20 17:14:36 +09:00
Ophestra	31f0dd36df	absolute: efficient equivalence check method ... This is more efficient and makes the call site cleaner. Signed-off-by: Ophestra <cat@gensokyo.uk>	2025-08-20 17:06:38 +09:00
Ophestra	9aec2f46fe	container/initdev: check path equivalence by value ... Fixes regression introduced while integrating Absolute. Signed-off-by: Ophestra <cat@gensokyo.uk>	2025-08-20 02:55:45 +09:00
Ophestra	022cc26b2e	container/capability: check CAP_TO_INDEX and CAP_TO_MASK ... Signed-off-by: Ophestra <cat@gensokyo.uk>	2025-08-20 02:45:00 +09:00
Ophestra	b4c018da8f	container/autoetc: do not bypass absolute check ... This can now be done cleanly via path function wrappers. Signed-off-by: Ophestra <cat@gensokyo.uk>	2025-08-20 02:37:11 +09:00
Ophestra	66f52407d3	container/initmkdir: check path equivalence by value ... Fixes regression introduced while integrating Absolute. Signed-off-by: Ophestra <cat@gensokyo.uk>	2025-08-20 02:32:22 +09:00
Ophestra	e463faf649	container/initbind: check path equivalence by value ... Same problem as autoroot, never updated the checks after integrating Absolute. Signed-off-by: Ophestra <cat@gensokyo.uk>	2025-08-20 02:22:04 +09:00
Ophestra	375acb476d	container/autoroot: check host path equivalence by value ... This will never return true otherwise unless the equivalent paths happen to be interned by the caller. Signed-off-by: Ophestra <cat@gensokyo.uk>	2025-08-20 02:14:39 +09:00
Ophestra	c81c9a9d75	container/init: split setup ops into individual files ... This significantly increases readability. Signed-off-by: Ophestra <cat@gensokyo.uk>	2025-08-20 01:28:31 +09:00
Ophestra	339e4080dc	container/ops: move Op type to init file ... This helps with the eventual separation of all setup ops into individual files. Signed-off-by: Ophestra <cat@gensokyo.uk>	2025-08-20 01:11:24 +09:00
Ophestra	e0533aaa68	container/autoroot: filter dentry with empty name ... This is unreachable, but nice to have just in case. Signed-off-by: Ophestra <cat@gensokyo.uk>	2025-08-20 01:03:49 +09:00
Ophestra	13c7083bc0	container: ptrace protection via Yama LSM ... This is only a nice to have feature as the init process has no additional privileges and the monitor process was never reachable anyway. Closes #4. Signed-off-by: Ophestra <cat@gensokyo.uk>	2025-08-20 00:43:55 +09:00
Ophestra	140fe21237	container/params: check setup/receive behaviour ... Signed-off-by: Ophestra <cat@gensokyo.uk>	2025-08-18 22:30:34 +09:00
Ophestra	f52d2c7db6	container/path: check create and mountinfo helpers ... These can quite easily be checked within the framework. The scanner fault injection might require updating at some point if the implementation changes. Signed-off-by: Ophestra <cat@gensokyo.uk>	2025-08-18 21:30:28 +09:00
Clayton Gilmer	5db0714072	container: optionally isolate host abstract UNIX domain sockets via landlock	2025-08-18 16:28:14 +09:00
Ophestra	69a4ab8105	container: move PR_SET_NO_NEW_PRIVS to parent ... This allows some LSM setup in the parent. Signed-off-by: Ophestra <cat@gensokyo.uk>	2025-08-18 11:46:02 +09:00
Ophestra	0ac6e99818	container: start from locked thread ... This allows setup that relies on per-thread state like securebits and landlock, from the parent side. Signed-off-by: Ophestra <cat@gensokyo.uk>	2025-08-17 17:42:22 +09:00
Ophestra	f35733810e	container: check output helper functions ... The container test suite has always been somewhat inadequate due to the inability of coverage tooling to reach into containers. This has become an excuse for not testing non-container code as well, which lead to the general lack of confidence when working with container code. This change aims to be one of many to address that to some extent. Signed-off-by: Ophestra <cat@gensokyo.uk>	2025-08-17 02:59:37 +09:00
Ophestra	9c1a5d43ba	container: enforce nonrepeatable autoetc and autoroot ... These keep track of some internal state, and they don't make sense to have multiple instances of anyway, so instead of dealing with that, just make them nonrepetable. Signed-off-by: Ophestra <cat@gensokyo.uk>	2025-08-17 01:43:11 +09:00