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
fde5f1ca64
container: buffer test output
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This further reduces noise on test failure by only passing through output of the failed test.
Signed-off-by: Ophestra <cat@gensokyo.uk >
2025-08-07 02:55:58 +09:00
4d0bdd84b5
container: test respect verbose flag
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This reduces noise on test failure.
Signed-off-by: Ophestra <cat@gensokyo.uk >
2025-08-07 02:50:00 +09:00
9a25542c6d
container/init: use mount string constants
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These literals were missed when the constants were first defined.
Signed-off-by: Ophestra <cat@gensokyo.uk >
2025-08-04 04:00:05 +09:00
c6be82bcf9
container/path: fhs path constants
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This increases readability since this can help disambiguate absolute paths from similarly named path segments.
Signed-off-by: Ophestra <cat@gensokyo.uk >
2025-08-03 21:16:45 +09:00
38245559dc
container/ops: mount dev readonly
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There is usually no good reason to write to /dev. This however doesn't work in internal/app because FilesystemConfig supplied by ContainerConfig might add entries to /dev, so internal/app follows DevWritable with Remount instead.
Signed-off-by: Ophestra <cat@gensokyo.uk >
2025-08-03 19:18:53 +09:00
7b416d47dc
container/ops: merge mqueue and dev Ops
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There is no reason to mount mqueue anywhere else, and these Ops usually follow each other. This change merges them. This helps decrease IPC overhead and also enables mounting dev readonly.
Signed-off-by: Ophestra <cat@gensokyo.uk >
2025-08-03 19:13:46 +09:00
15170735ba
container/mount: move tmpfs sysroot prefixing to caller
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The mountTmpfs helper is a relatively low level function that is not exposed as part of the API. Prefixing sysroot here not only introduces overhead but is also quite error-prone.
Signed-off-by: Ophestra <cat@gensokyo.uk >
2025-08-03 18:06:41 +09:00
6a3886e9db
container/op: unexport bind resolved source field
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This is used for symlink resolution and is only used internally.
Signed-off-by: Ophestra <cat@gensokyo.uk >
2025-08-03 17:57:37 +09:00
ff66296378
container/mount: mount data escape helper function
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For formatting user-supplied path strings into overlayfs mount data.
Signed-off-by: Ophestra <cat@gensokyo.uk >
2025-08-03 17:46:14 +09:00
347a79df72
container: improve clone flags readability
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Signed-off-by: Ophestra <cat@gensokyo.uk >
2025-08-02 18:19:44 +09:00
0f78864a67
container/mount: export mount string constants
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This improves code readability and should also be useful for callers choosing to preserve CAP_SYS_ADMIN.
Signed-off-by: Ophestra <cat@gensokyo.uk >
2025-08-02 17:20:09 +09:00
c5d24979f5
container/ops: expose remount as Op
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This is useful for building a filesystem hierarchy then remounting it readonly.
Signed-off-by: Ophestra <cat@gensokyo.uk >
2025-08-01 23:48:02 +09:00
1dc780bca7
container/mount: separate remount from bind
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Remount turns out to be useful in other places.
Signed-off-by: Ophestra <cat@gensokyo.uk >
2025-08-01 23:32:38 +09:00
547a2adaa4
container/mount: pass tmpfs flags
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Signed-off-by: Ophestra <cat@gensokyo.uk >
2025-08-01 18:59:06 +09:00
4e85643865
container: implement autoroot as setup op
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This code is useful beyond just pd behaviour, and implementing it this way also reduces IPC overhead.
Signed-off-by: Ophestra <cat@gensokyo.uk >
2025-08-01 04:04:36 +09:00
f14e7255be
container/ops: use correct flags value in bind string
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Signed-off-by: Ophestra <cat@gensokyo.uk >
2025-08-01 00:54:08 +09:00
4e518f11d8
container/ops: autoetc implementation to separate file
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This is not a general purpose setup Op. Separate it so it is easier to find.
Signed-off-by: Ophestra <cat@gensokyo.uk >
2025-07-31 19:54:03 +09:00
940ee00ffe
container/init: configurable lingering process wait delay
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Signed-off-by: Ophestra <cat@gensokyo.uk >
2025-07-29 02:38:17 +09:00
d6b07f12ff
container: forward context cancellation
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This allows container processes to exit gracefully.
Signed-off-by: Ophestra <cat@gensokyo.uk >
2025-07-28 01:45:38 +09:00
65fe09caf9
container: check cancel signal delivery
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This change also makes some parts of the test more robust.
Signed-off-by: Ophestra <cat@gensokyo.uk >
2025-07-28 01:04:29 +09:00
a1e5f020f4
container: improve doc comments
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Putting them on the builder methods is more useful.
Signed-off-by: Ophestra <cat@gensokyo.uk >
2025-07-27 12:27:42 +09:00
