2baa2d7063
container/init: measure init behaviour
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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
0166833431
container/dispatcher: start goroutine in dispatcher
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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
b3da3da525
container/init: avoid multiple lastcap calls
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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
1b3902df78
container/dispatcher: instrument each goroutine individually
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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
ea1e3ebae9
container/params: pass fd instead of file
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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
1c692bfb79
container/init: call lockOSThread through dispatcher
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This degrades test performance if not stubbed out.
Signed-off-by: Ophestra <cat@gensokyo.uk >
2025-08-22 22:24:14 +09:00
141a18999f
container: move integration test helpers
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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
afe23600d2
container/path: use syscall dispatcher
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This allows path and mount functions to be instrumented.
Signed-off-by: Ophestra <cat@gensokyo.uk >
2025-08-22 22:02:21 +09:00
09d2844981
container/init: wrap syscall helper functions
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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
5b73316ae0
container/syscall: doc comments from manpages
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These are pulled straight from the manpages.
Signed-off-by: Ophestra <cat@gensokyo.uk >
2025-08-21 00:33:46 +09:00
5d8a2199b6
container/init: op interface valid method
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Check ops early and eliminate duplicate checks.
Signed-off-by: Ophestra <cat@gensokyo.uk >
2025-08-21 00:18:50 +09:00
a1482ecdd0
container/inittmpfs: check path equivalence by value
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Fixes regression introduced while integrating Absolute.
Signed-off-by: Ophestra <cat@gensokyo.uk >
2025-08-20 20:17:28 +09:00
a07f9ed84c
container/initsymlink: check path equivalence by value
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Fixes regression introduced while integrating Absolute.
Signed-off-by: Ophestra <cat@gensokyo.uk >
2025-08-20 20:03:02 +09:00
51304b03af
container/initremount: check path equivalence by value
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Fixes regression introduced while integrating Absolute.
Signed-off-by: Ophestra <cat@gensokyo.uk >
2025-08-20 19:55:51 +09:00
c6397b941f
container/initproc: check path equivalence by value
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Fixes regression introduced while integrating Absolute.
Signed-off-by: Ophestra <cat@gensokyo.uk >
2025-08-20 19:29:45 +09:00
d65e5f817a
container/initplace: check path equivalence by value
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Fixes regression introduced while integrating Absolute.
Signed-off-by: Ophestra <cat@gensokyo.uk >
2025-08-20 19:19:27 +09:00
696e593898
container/initoverlay: check path equivalence by value
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Fixes regression introduced while integrating Absolute.
Signed-off-by: Ophestra <cat@gensokyo.uk >
2025-08-20 17:33:15 +09:00
97ab24feef
container/init: use absolute compare method
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More checks are also added.
Signed-off-by: Ophestra <cat@gensokyo.uk >
2025-08-20 17:14:36 +09:00
31f0dd36df
absolute: efficient equivalence check method
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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
9aec2f46fe
container/initdev: check path equivalence by value
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Fixes regression introduced while integrating Absolute.
Signed-off-by: Ophestra <cat@gensokyo.uk >
2025-08-20 02:55:45 +09:00
022cc26b2e
container/capability: check CAP_TO_INDEX and CAP_TO_MASK
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Signed-off-by: Ophestra <cat@gensokyo.uk >
2025-08-20 02:45:00 +09:00
b4c018da8f
container/autoetc: do not bypass absolute check
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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
66f52407d3
container/initmkdir: check path equivalence by value
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Fixes regression introduced while integrating Absolute.
Signed-off-by: Ophestra <cat@gensokyo.uk >
2025-08-20 02:32:22 +09:00
e463faf649
container/initbind: check path equivalence by value
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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
375acb476d
container/autoroot: check host path equivalence by value
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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
c81c9a9d75
container/init: split setup ops into individual files
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This significantly increases readability.
Signed-off-by: Ophestra <cat@gensokyo.uk >
2025-08-20 01:28:31 +09:00
339e4080dc
container/ops: move Op type to init file
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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
e0533aaa68
container/autoroot: filter dentry with empty name
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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
13c7083bc0
container: ptrace protection via Yama LSM
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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
140fe21237
container/params: check setup/receive behaviour
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Signed-off-by: Ophestra <cat@gensokyo.uk >
2025-08-18 22:30:34 +09:00
f52d2c7db6
container/path: check create and mountinfo helpers
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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
5db0714072
container: optionally isolate host abstract UNIX domain sockets via landlock
2025-08-18 16:28:14 +09:00
69a4ab8105
container: move PR_SET_NO_NEW_PRIVS to parent
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This allows some LSM setup in the parent.
Signed-off-by: Ophestra <cat@gensokyo.uk >
2025-08-18 11:46:02 +09:00
0ac6e99818
container: start from locked thread
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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
f35733810e
container: check output helper functions
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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
9c1a5d43ba
container: enforce nonrepeatable autoetc and autoroot
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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
8aa65f28c6
container: allow additional state between ops
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This is useful for ops that need to be aware of previous instances of themselves.
Signed-off-by: Ophestra <cat@gensokyo.uk >
2025-08-17 01:32:07 +09:00
ba3227bf15
container: export overlay escape
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Signed-off-by: Ophestra <cat@gensokyo.uk >
2025-08-14 23:44:11 +09:00
332d90d6c7
container/path: remove unused path
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Signed-off-by: Ophestra <cat@gensokyo.uk >
2025-08-14 05:00:09 +09:00
e99d7affb0
container: use absolute for pathname
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This is simultaneously more efficient and less error-prone. This change caused minor API changes in multiple other packages.
Signed-off-by: Ophestra <cat@gensokyo.uk >
2025-08-11 04:56:42 +09:00
41ac2be965
container/absolute: wrap safe stdlib functions
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These functions do not change the absoluteness of a pathname.
Signed-off-by: Ophestra <cat@gensokyo.uk >
2025-08-10 03:11:10 +09:00
02271583fb
container: remove PATH lookup behaviour
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This is way higher level than the container package and does not even work unless every path is mounted in the exact same location.
This behaviour causes nothing but confusion and problems,
Signed-off-by: Ophestra <cat@gensokyo.uk >
2025-08-09 19:08:54 +09:00
ef54b2cd08
container/absolute: early absolute pathname check
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This is less error-prone, and allows pathname to be checked once.
Signed-off-by: Ophestra <cat@gensokyo.uk >
2025-08-09 18:53:46 +09:00
82608164f6
container/params: remove confusingly named error
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Signed-off-by: Ophestra <cat@gensokyo.uk >
2025-08-09 17:37:46 +09:00
edd6f2cfa9
container: document ambient capabilities
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Signed-off-by: Ophestra <cat@gensokyo.uk >
2025-08-08 02:11:55 +09:00
acffa76812
container/ops: implement overlay op
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There are significant limitations to using the overlay mount, and the implementation in the kernel is quite quirky. For now the Op is quite robust, however a higher level interface for it has not been decided yet.
Signed-off-by: Ophestra <cat@gensokyo.uk >
2025-08-08 01:54:48 +09:00
8da76483e6
container/path: fix typo "paths"
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Signed-off-by: Ophestra <cat@gensokyo.uk >
2025-08-08 01:32:48 +09:00
534c932906
container: test case runtime initialisation
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This allows for more sophisticated test setup.
Signed-off-by: Ophestra <cat@gensokyo.uk >
2025-08-08 01:03:35 +09:00
fee10fed4d
container: test bypass output buffer on verbose
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This restores verbose behaviour.
Signed-off-by: Ophestra <cat@gensokyo.uk >
2025-08-08 00:57:27 +09:00
f1a53d6116
container: raise CAP_DAC_OVERRIDE
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This is required for upperdir and workdir checks in overlayfs.
Signed-off-by: Ophestra <cat@gensokyo.uk >
2025-08-08 00:43:19 +09:00
