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2024-08-21libutil/config: unify path setting typesAlois Wohlschlager
There have been multiple setting types for paths that are supposed to be canonicalised, depending on whether zero or one, one, or any number of paths is to be specified. Naturally, they behaved in slightly different ways in the code. Simplify things by unifying them and removing special behaviour (mainly the "multiple paths type can coerce to boolean" thing). Change-Id: I7c1ce95e9c8e1829a866fb37d679e167811e9705
2024-08-19libstore: un-enable_shared_from_this Goaleldritch horrors
it's no longer needed for anything, and not even a great idea. Change-Id: Ia7a59e1e3f9d8f4ad2ac3b054e38485157c210a6
2024-08-19libstore: make Worker::childStarted privateeldritch horrors
this can be a proper WorkResult now. childTerminated is unfortunately a lot more stubborn and won't be made private for quite a while yet. once we can get rid of the Worker poll loop that *should* be possible though Change-Id: I2218df202da5cb84e852f6a37e4c20367495b617
2024-08-19libstore: turn HookReply into a variant typeeldritch horrors
we'll need this once we want to pass extra information out of accepting replies, such as fd sets or possibly even async output reader promises. Change-Id: I5e2f18cdb80b0d2faf3067703cc18bd263329b3f
2024-08-19libstore: downsize hook pipeseldritch horrors
don't keep fds open we're not using. currently this does not cause any problems, but it does increase the size of our fd table needlessly and in the future, when we have proper async processing, having builderOut open in the daemon once the hook has been fully started is problematic Change-Id: I6e7fb773b280b042873103638d3e04272ca1e4fc
2024-08-19libstore: run childStarted as late as possibleeldritch horrors
otherwise we *technically* give away the output fds before we've read them. Change-Id: I6ad0d6a1bb553ecfcdd7708f50d34142a425374d
2024-08-19libstore: move respect-timeoutiness to goal methodeldritch horrors
this is useless to do on the face of it, but it'll make it easier to convert the entire output handling to use async io and promises soon Change-Id: I2d1eb62c4bbf8f57bd558b9599c08710a389b1a8
2024-08-18libstore: clarify that build log fd and hook log fd are differenteldritch horrors
only DerivationGoal can set the hook to anything at all. it always sets buildOutFD to something that is not related to fromHook in any way, and mixing the two would have rather dire consequences for log consistency. Change-Id: Ida86727fd1cd5e1ecd78f07f3bde330a346658a8
2024-08-18libstore: remove DerivationGoal::isReadDesceldritch horrors
all derivation goals need a log fd of some description. let's save this single fd in a dedicated pointer field for all subclasses so that later we have just the one spot to change if we turn this into async promises Change-Id: If223adf90909247363fb823d751cae34d25d0c0b
2024-08-18libstore: don't ignore max-build-log-size for ssh-ngeldritch horrors
Change-Id: Ieab14662bea6e6f5533325f0e945147be998f9a2
2024-08-18libstore: add explicit in-build-slot-ness to goalseldritch horrors
we don't need to expose information about how busy a Worker is if the worker can instead tell its work items whether they are in a slot. in the future we might use this to not start items waiting for a slot if no slots are currently available, but that requires more preparation. Change-Id: Ibe01ac536da7e6d6f80520164117c43e772f9bd9
2024-08-18libstore: remove method without definitioneldritch horrors
Change-Id: I676411752a4b1777045d7211ac1176693f1a3d7d
2024-08-18libstore: remove unused includes in worker codeeldritch horrors
Change-Id: I6c7fccc4e710e23a22faae2669cb75f2f6da27b4
2024-08-18libstore: make Worker::removeGoal privateeldritch horrors
Change-Id: I8583d9ff752f702a10ec52b0330b0d4d4d2614fa
2024-08-13Merge "libutil: Add bindPath function from libstore" into mainArtemis Tosini
2024-08-09libutil: rename and optimize closeMostFDseldritch horrors
this is only used to close non-stdio files in derivation sandboxes. we may as well encode that in its name, drop the unnecessary integer set, and use close_range to deal with the actual closing of files. not only is this clearer, it also makes sandbox setup on linux fast by 1ms each Change-Id: Id90e259a49c7bc896189e76bfbbf6ef2c0bcd3b2
2024-08-09libstore: deprecate the build-hook settingeldritch horrors
implementing a build hook is pretty much impossible without either being a nix, or blindly forwarding the important bits of all build requests to some kind of nix. we've found no uses of build-hook in the wild, and the build-hook protocol (apart from being entirely undocumented) is not able to convey any kind of versioning information between hook and daemon. if we want to upgrade this infrastructure (which we do), this must not stay Change-Id: I1ec4976a35adf8105b8ca9240b7984f8b91e147e
2024-08-09Merge changes Ib7c80826,I636f8a71,I67669b98 into mainjade
* changes: perl: un-autos your conf build: declare all the deps as -isystem darwin: workaround PROC_PIDLISTFDS on processes with no fds
2024-08-08Merge changes I6358a393,I2d9f276b,Idd096dc9 into mainjade
* changes: clang-tidy: write a lint for charptr_cast tree-wide: automated migration to charptr_cast clang-tidy: enforce the new rules
2024-08-08Merge changes I526cceed,Ia4e2f1fa,I22e66972,I9fbd55a9,Ifca22e44 into mainjade
* changes: sqlite: add a Use::fromStrNullable util: implement charptr_cast tree-wide: fix a pile of lints refactor: make HashType and Base enum classes for type safety build: integrate clang-tidy into CI
2024-08-08sqlite: add a Use::fromStrNullableJade Lovelace
There were several usages of the raw sqlite primitives along with C style casts, seemingly because nobody thought to use an optional for getting a string or NULL. Let's fix this API given we already *have* a wrapper. Change-Id: I526cceedc2e356209d8fb62e11b3572282c314e8
2024-08-08tree-wide: automated migration to charptr_castJade Lovelace
The lint did it :3 Change-Id: I2d9f276b01ebbf14101de4257ea13e44ff6fe0a0
2024-08-08tree-wide: fix a pile of lintsJade Lovelace
This: - Converts a bunch of C style casts into C++ casts. - Removes some very silly pointer subtraction code (which is no more or less busted on i686 than it began) - Fixes some "technically UB" that never had to be UB in the first place. - Makes finally follow the noexcept status of the inner function. Maybe in the future we should ban the function from not being noexcept, but that is not today. - Makes various locally-used exceptions inherit from std::exception. Change-Id: I22e66972602604989b5e494fd940b93e0e6e9297
2024-08-08refactor: make HashType and Base enum classes for type safetyJade Lovelace
Change-Id: I9fbd55a9d50464a56fe11cb42a06a206914150d8
2024-08-08libstore: make Worker::waitForInput privateeldritch horrors
Change-Id: I71a42acd5a4a9a18b55cf754cdf9896614134398
2024-08-08libstore: make Worker status flags privateeldritch horrors
Change-Id: I16ec8994c6448d70b686a2e4c10f19d4e240750d
2024-08-08libstore: remove Goal::addWaiteeeldritch horrors
Change-Id: I1b00d1a537d84790878cb0e81aaa1cbaa143d62d
2024-08-08libstore: make Worker::wakeUp privateeldritch horrors
Change-Id: Iffa55272fe6ef4adaf3e9d4d25e5339792c2e460
2024-08-08libstore: make Worker::waitForAWhile privateeldritch horrors
Change-Id: I0cdcd436ee71124ca992b4f4fe307624a25f11e9
2024-08-08libstore: make Worker::waitForBuildSlot privateeldritch horrors
Change-Id: I02a54846cd65622edbd7a1d6c24a623b4a59e5b3
2024-08-07Merge "oops: fix warning about catching polymorphic exception" into mainjade
2024-08-07Merge "fix: warn and document when advanced attributes will have no impact ↵Maximilian Bosch
due to __structuredAttrs" into main
2024-08-07darwin: workaround PROC_PIDLISTFDS on processes with no fdsJade Lovelace
This has been causing various seemingly spurious CI failures as well as some failures on people running tests on beta builds. lix> ++(nix-collect-garbage-dry-run.sh:20) nix-store --gc --print-dead lix> ++(nix-collect-garbage-dry-run.sh:20) wc -l lix> finding garbage collector roots... lix> error: Listing pid 87261 file descriptors: Undefined error: 0 There is no real way to write a proper test for this, other than to start a process like the following: int main(void) { for (int i = 0; i < 1000; ++i) { close(i); } sleep(10000); } and then let Lix's gc look at it. I have a relatively high confidence this *will* fix the problem since I have manually confirmed the behaviour of the libproc call is as-unexpected, and it would perfectly explain the observed symptom. Fixes: https://git.lix.systems/lix-project/lix/issues/446 Change-Id: I67669b98377af17895644b3bafdf42fc33abd076
2024-08-06oops: fix warning about catching polymorphic exceptionJade Lovelace
This was introduced in I0fc80718eb7e02d84cc4b5d5deec4c0f41116134 and unnoticed since it only appears in gcc builds. Change-Id: I1de80ce2a8fab63efdca7ca0de2a302ceb118267
2024-08-07Merge changes I0fc80718,Ia182b86f,I355f82cb,I8a9b58fa,Id89f8a1f, ... into mainjade
* changes: tree-wide: fix various lint warnings flake & doxygen: update tagline nix flake metadata: print modified dates for input flakes cli: eat terminal codes from stdout also Implement forcing CLI colour on, and document it better manual: fix a syntax error in redirects.js that made it not do anything misc docs/meson tidying build: implement clang-tidy using our plugin
2024-08-06libstore/linux: precompile and cache the seccomp BPFAlois Wohlschlager
The growth of the seccomp filter in 127ee1a101e3f5ebab39ad98cbe58fefcd52eca5 made its compilation time significant (roughly 10 milliseconds have been measured on one machine). For this reason, it is now precompiled and cached in the parent process so that this overhead is not hit for every single build. It is still not optimal when going through the daemon, because compilation still happens once per client, but it's better than before and doing it only once for the entire daemon requires excessive crimes with the current architecture. Fixes: https://git.lix.systems/lix-project/lix/issues/461 Change-Id: I2277eaaf6bab9bd74bbbfd9861e52392a54b61a3
2024-08-06libstore/linux: compile the seccomp BPF explicitlyAlois Wohlschlager
This is a preparation for precompiling the filter, which is done separately. The behaviour should be unchanged for now. Change-Id: I899aa7242962615949208597aca88913feba1cb8
2024-08-06libstore: add LocalDerivationGoal setupSyscallFilter hookAlois Wohlschlager
The seccomp setup code was a huge chunk of conditionally compiled platform-specific code. For this reason, it is appropriate to move it to the platform-specific implementation file. Ideally its setup could be moved a bit to make it happen at the same place as the Darwin restrictions, but that change is going to be less mechanical. Change-Id: I496aa3c4fabf34656aba1e32b0089044ab5b99f8
2024-08-04tree-wide: fix various lint warningsJade Lovelace
Change-Id: I0fc80718eb7e02d84cc4b5d5deec4c0f41116134
2024-08-03fix: warn and document when advanced attributes will have no impact due to ↵Tom Bereknyei
__structuredAttrs Backport of https://github.com/NixOS/nix/pull/10884. Change-Id: I82cc2794730ae9f4a9b7df0185ed0aea83efb65a
2024-08-03libstore: move Goal::waiteeDone into Worker::goalFinishedeldritch horrors
this begins a long and arduous journey to remove all result state from Goal, to eventually drop the std::enable_shared_from_this base, and to completely eliminate all unsynchronized modification of states of both Goal and Worker. by the end of this we will hopefully be able to start and reap multiple derivation builds in parallel, which should speed up the process quite a bit (at least for short local builds, others might not notice a large difference. the build hooks will remain a problem.) Change-Id: I57dcd9b2cab4636ed4aa24cdec67124fef883345
2024-08-02Merge "libstore/ssh: only resume the logger when we paused it" into mainalois31
2024-08-02libstore/ssh: only resume the logger when we paused itAlois Wohlschlager
In the SSH code, the logger was conditionally paused, but unconditionally resumed. This was fine as long as resuming the logger was idempotent. Starting with 0dd1d8ca1cdccfc620644a7f690ed35bcd2d1e74, it isn't any more, and the behaviour of the code in question was missed. Consequently, an assertion failure is triggered for example when performing builds against an "SSH" store on localhost. Fix the issue by only resuming the logger when it has actually been paused. Fixes: https://git.lix.systems/lix-project/lix/issues/458 Change-Id: Ib1e4d047744a129f15730b7216f9c9368c2f4211
2024-08-02libstore: move Goal::amDone to Workereldritch horrors
we still mutate goal state to store the results of any given goal run, but now we also have that information in Worker and could in theory do something else with it. we could return a map of goal to goal results, which would also let us better diagnose failures of subgoals (at all). Change-Id: I1df956bbd9fa8cc9485fb6df32918d68dda3ff48
2024-08-02libstore: return finishedness from Goal methodseldritch horrors
this is the first step towards removing all result-related mutation of Goal state from goal implementations themselves, and into Worker state instead. once that is done we can treat all non-const Goal fields like private state of the goal itself, and make threading of goals possible Change-Id: I69ff7d02a6fd91a65887c6640bfc4f5fb785b45c
2024-08-02libstore: encapsulate worker build hook stateeldritch horrors
once goals run on multiple threads these fields must by synchronized as one, or we try to run build hooks to often (or worse, not often enough) Change-Id: I47860e46fe5c6db41755b2a3a1d9dbb5701c4ca4
2024-07-30libstore: move Goal::getBuildResult to BuildResulteldritch horrors
there are no other uses for this yet, but asking for just a subset of outputs does seem at least somewhat useful to have as a generic thing Change-Id: I30ff5055a666c351b1b086b8d05b9d7c9fb1c77a
2024-07-30libstore: count all substitutions toward the same limiteldritch horrors
limiting CA substitutions was a rather recent addition, and it used a dedicated counter to not interfere with regular substitutions. though this works fine it somewhat contradicts the documentation; job limits should apply to all kinds of substitutions, or be one limit for each. Change-Id: I1505105b14260ecc1784039b2cc4b7afcf9115c8
2024-07-30libstore: always wake up goals on EOFeldritch horrors
all goals do this. it makes no sense to not notify a goal of EOF conditions because this is the universal signal for "child done" Change-Id: Ic3980de312547e616739c57c6248a8e81308b5ee
2024-07-30libstore: simplify substitution handleEOFeldritch horrors
both substitution goals add only this single fd to their wait set. Change-Id: Ibf921f5bb3919106208a0871523b32c8f67fb3d3