Commit graph

3297 commits

Author SHA1 Message Date
Eelco Dolstra
761242afa0 BuildResult: Use DerivedPath 2022-03-09 12:25:35 +01:00
Eelco Dolstra
a4604f1928 Add Store::buildPathsWithResults()
This function is like buildPaths(), except that it returns a vector of
BuildResults containing the exact statuses and output paths of each
derivation / substitution. This is convenient for functions like
Installable::build(), because they then don't need to do another
series of calls to get the outputs of CA derivations. It's also a
precondition to impure derivations, where we *can't* query the output
of those derivations since they're not stored in the Nix database.

Note that PathSubstitutionGoal can now also return a BuildStatus.
2022-03-08 19:56:34 +01:00
Théophane Hufschmitt
a2ace54fe4
Merge pull request #6029 from Ma27/nix-log-ssh-ng
ssh-ng: also store build logs to make them accessible by `nix log`
2022-03-07 09:51:40 +01:00
John Ericson
6636202356 Factor out a GcStore interface
Starts progress on #5729.

The idea is that we should not have these default methods throwing
"unimplemented". This is a small step in that direction.

I kept `addTempRoot` because it is a no-op, rather than failure. Also,
as a practical matter, it is called all over the place, while doing
other tasks, so the downcasting would be annoying.

Maybe in the future I could move the "real" `addTempRoot` to `GcStore`,
and the existing usecases use a `tryAddTempRoot` wrapper to downcast or
do nothing, but I wasn't sure whether that was a good idea so with a
bias to less churn I didn't do it yet.
2022-03-03 19:01:25 +00:00
Eelco Dolstra
6097790863 Fix segfault in headerCallback()
https://hydra.nixos.org/build/168594664
2022-03-03 11:11:16 +01:00
John Ericson
e862833ec6 Move BuildResult defintion to its own header
Just like we did for `ValidPathInfo` in
d92d4f85a5.
2022-03-01 19:43:07 +00:00
John Ericson
ea71da395f Move some stuff from Settings to a new FetchSettings.
Starting work on #5638

The exact boundary between `FetchSettings` and `EvalSettings` is not
clear to me, but that's fine. First lets clean out `libstore`, and then
worry about what, if anything, should be the separation between those
two.
2022-03-01 01:39:25 +00:00
Maximilian Bosch
102cb39086
libstore/build: add a few explanatory comments; simplify 2022-02-28 17:27:52 +01:00
Maximilian Bosch
cd92ea5885
libstore/derivation-goal: avoid double-parsing of JSON messages
To avoid that JSON messages are parsed twice in case of
remote builds with `ssh-ng://`, I split up the original
`handleJSONLogMessage` into three parts:

* `parseJSONMessage(const std::string&)` checks if it's a message in the
  form of `@nix {...}` and tries to parse it (and prints an error if the
  parsing fails).
* `handleJSONLogMessage(nlohmann::json&, ...)` reads the fields from the
  message and passes them to the logger.
* `handleJSONLogMessage(const std::string&, ...)` behaves as before, but
  uses the two functions mentioned above as implementation.

In case of `ssh-ng://`-logs the first two methods are invoked manually.
2022-02-28 17:27:52 +01:00
Maximilian Bosch
7a04839ea5
ssh-ng: also store build logs to make them accessible by nix log
Right now when building a derivation remotely via

    $ nix build -j0 -f . hello -L --builders 'ssh://builder'

it's possible later to read through the entire build-log by running
`nix log -f . hello`. This isn't possible however when using `ssh-ng`
rather than `ssh`.

The reason for that is that there are two different ways to transfer
logs in Nix through e.g. an SSH tunnel (that are used by `ssh`/`ssh-ng`
respectively):

* `ssh://` receives its logs from the fd pointing to `builderOut`. This
  is directly passed to the "log-sink" (and to the logger on each `\n`),
  hence `nix log` works here.
* `ssh-ng://` however expects JSON-like messages (i.e. `@nix {log data
  in here}`) and passes it directly to the logger without doing anything
  with the `logSink`. However it's certainly possible to extract
  log-lines from this format as these have their own message-type in the
  JSON payload (i.e. `resBuildLogLine`).

  This is basically what I changed in this patch: if the code-path for
  `builderOut` is not reached and a `logSink` is initialized, the
  message was successfully processed by the JSON logger (i.e. it's in
  the expected format) and the line is of the expected type (i.e.
  `resBuildLogLine`), the line will be written to the log-sink as well.

Closes #5079
2022-02-28 17:27:52 +01:00
Eelco Dolstra
b91500a14e Fix clang warning 2022-02-28 15:48:26 +01:00
Eelco Dolstra
a949673a5b Fix Darwin build
Fixes #6169
2022-02-28 15:48:26 +01:00
Eelco Dolstra
df552ff53e Remove std::string alias (for real this time)
Also use std::string_view in a few more places.
2022-02-25 16:13:02 +01:00
Kevin Amado
b312d4d096
refactor: remove verbose-build from docs
- From what I see it is an implementation detail
  but is no longer configurable from the settings
2022-02-25 09:16:42 -05:00
Eelco Dolstra
36c7b12f33 Remove std::string alias 2022-02-21 16:37:25 +01:00
Eelco Dolstra
fe9afb65bb Remove std::set alias 2022-02-21 16:28:23 +01:00
Eelco Dolstra
afcdc7606c Remove std::list alias 2022-02-21 16:25:12 +01:00
Linus Heckemann
dbdc63bc41 path-info: use full store paths when we have them
Fixes #5645
2022-02-19 00:32:05 +01:00
Eelco Dolstra
2d6d9a28eb addToStoreFromDump(): Take std::string_view 2022-02-16 11:02:35 +01:00
Sebastian Ullrich
c437e1326d Fix using sandbox without user namespaces 2022-02-12 16:28:36 +01:00
Eelco Dolstra
97e02c23bd Fix 'basic_string::_M_construct null not valid' in interrupted download
Fixes #5985.
2022-02-07 10:53:47 +01:00
Eelco Dolstra
cd35bbbeef Merge branch 'more-stringviews' of https://github.com/pennae/nix 2022-02-02 12:38:37 +01:00
Thomas Koch
85b1427662 fix spelling mistakes reported by Debian's lintian tool 2022-01-30 10:51:39 +02:00
pennae
41d70a2fc8 return string_views from forceString*
once a string has been forced we already have dynamic storage allocated for it,
so we can easily reuse that storage instead of copying.
2022-01-27 17:15:43 +01:00
pennae
0d7fae6a57 convert a for more utilities to string_view 2022-01-27 17:15:43 +01:00
Eelco Dolstra
35dbdbedd4 nix store ping: Report Nix daemon version
Fixes #5952.
2022-01-25 21:15:58 +01:00
Eelco Dolstra
076945c808
Merge pull request #5875 from hercules-ci/fix-large-drv-field-stack-overflow
Fix segfault or stack overflow caused by large derivation fields
2022-01-24 12:05:30 +01:00
Robert Hensing
0407436b0f
derivations.cc: Use larger buffer in printString
If we want to be careful about hitting the stack protector page, we should use `-fstack-check` instead.

Co-authored-by: Eelco Dolstra <edolstra@gmail.com>
2022-01-21 17:25:37 +01:00
Eelco Dolstra
e85cf34ea3
Merge pull request #5949 from obsidiansystems/old-copyClosure
Add back `copyClosure` for plain `StorePath`s
2022-01-21 11:33:32 +01:00
John Ericson
5ee937523d Add back copyClosure for plain StorePaths
This was removed in 2e199673a5 when
`copyPath` transitioned to use `RealisedPath`. But then in
e9848beca7 we added it back just for
`realisedPath`.

I think it is a good utility function --- one can easily imagine it
becoming optimized in the future, and copying paths *violating* the
closure is a very niche feature.

So if we have `copyPaths` for both sorts of paths, I think we should
have `copyClosure` for both sorts too.
2022-01-20 20:57:44 +00:00
Robert Hensing
dec7748119 Replace withBuffer by boost small_vector
Although this will leave gaps in the stack, the performance impact
of those should be insignificant and we get a simpler solution
this way.
2022-01-19 15:21:56 +01:00
Robert Hensing
6dd271b7b4 withBuffer: avoid allocating a std::function 2022-01-19 15:21:56 +01:00
Robert Hensing
55c58580be Add withBuffer
... to avoid non-standard, unidiomatic alloca.
2022-01-19 15:21:56 +01:00
Robert Hensing
d038a67bd3 Fix segfault or stack overflow caused by large derivation fields
This removes a dynamic stack allocation, making the derivation
unparsing logic robust against overflows when large strings are
added to a derivation.
Overflow behavior depends on the platform and stack configuration.

For instance, x86_64-linux/glibc behaves as (somewhat) expected:

$ (ulimit -s 20000; nix-instantiate tests/lang/eval-okay-big-derivation-attr.nix)
error: stack overflow (possible infinite recursion)

$ (ulimit -s 40000; nix-instantiate tests/lang/eval-okay-big-derivation-attr.nix)
error: expression does not evaluate to a derivation (or a set or list of those)

However, on aarch64-darwin:

$ nix-instantiate big-attr.nix                                                                                                                                                                                                                                                       ~
zsh: segmentation fault  nix-instantiate big-attr.nix

This indicates a slight flaw in the single stack protection page
approach that is not encountered with normal stack frames.
2022-01-19 15:21:56 +01:00
regnat
e36add56cf Fix the build with nlohmann/json 3.10.4+ 2022-01-19 14:37:54 +01:00
lincoln auster [they/them]
3e5a9ad7ff allow modifying lockfile commit msg with nix config option
This allows setting the commit-lockfile-summary option to a non-empty
string to override the commit summary while leaving the body unchanged.
2022-01-18 16:10:27 -07:00
Eelco Dolstra
5b243a2b4b BinaryCacheStore: Implement addBuildLog() 2022-01-18 16:14:01 +01:00
Eelco Dolstra
4dda1f92aa Add command 'nix store copy-log'
Fixes #5222.
2022-01-18 14:08:49 +01:00
Eelco Dolstra
f6f0bcf11f
Doh 2022-01-18 14:06:51 +01:00
Eelco Dolstra
50be51d9a8 Doh 2022-01-18 13:50:25 +01:00
Eelco Dolstra
d62a9390fc Get rid of std::shared_ptr<std::string> and ref<std::string>
These were needed back in the pre-C++11 era because we didn't have
move semantics. But now we do.
2022-01-18 11:12:30 +01:00
Eelco Dolstra
776eb97a43 serialise.hh: Use std::string_view 2022-01-17 22:20:23 +01:00
Eelco Dolstra
8a446aff75
Merge pull request #5898 from layus/repair-path-links
Make --repair-path also repair corrupt optimised links
2022-01-11 14:14:44 +01:00
Guillaume Maudoux
9f9f39a24b Prefer RepairFlag over bool when applicable 2022-01-11 13:38:28 +01:00
Guillaume Maudoux
e9a4abdb5d Make --repair-path also repair corrupt optimised links
There already existed a smoke test for the link content length,
but it appears that there exists some corruptions pernicious enough
to replace the file content with zeros, and keeping the same length.

--repair-path now goes as far as checking the content of the link,
making it true to its name and actually repairing the path for such
coruption cases.
2022-01-11 11:57:45 +01:00
Eelco Dolstra
19fd6e585d 'target' points to 'source' 2022-01-10 16:52:25 +01:00
Eelco Dolstra
df11e75d0e Merge branch 'recursive-nix-fix' of https://github.com/L-as/nix 2022-01-10 16:51:59 +01:00
Eelco Dolstra
be64fb9b51 DerivationGoal::loadDerivation(): Don't use derivationFromPath()
This causes a recursive call to ensurePath(), which is not a good
idea.
2022-01-07 13:22:34 +01:00
Domen Kožar
bdc577936f
Merge pull request #5749 from GavinRay97/patch-1
Better diagnostics if no valid signature found
2022-01-06 08:39:58 +01:00
Eelco Dolstra
9747ea84b4 Remove CPU locking
This was already accidentally disabled in ba87b08. It also no longer
appears to be beneficial, and in fact slow things down, e.g. when
evaluating a NixOS system configuration:

  elapsed time:       median =      3.8170  mean =      3.8202  stddev =      0.0195  min =      3.7894  max =      3.8600  [rejected, p=0.00000, Δ=0.36929±0.02513]
2021-12-22 15:56:25 +01:00
Eelco Dolstra
ec8f24ed3a Ignore EPERM when unsharing FS state
On Docker (but not podman), unshare(CLONE_FS) fails with EPERM. So
let's ignore it and hope nothing bad happens.

Attempted fix for #5777.
2021-12-16 22:02:50 +01:00
Eelco Dolstra
18e4851752
Merge pull request #5769 from NixOS/ca/get-build-stats
Add a crude tracing mechansim for the build results
2021-12-14 10:53:51 +01:00
Théophane Hufschmitt
6234e1c811
Merge pull request #5702 from baloo/baloo/hide-non-reproducible-settings
reproducibility: hide non-reproducible settings from manual
2021-12-14 09:14:25 +01:00
Théophane Hufschmitt
3fc8042f77
Merge pull request #5366 from trofi/speedup-ca-query
ca-specific-schema.sql: add index on RealisationsRefs(referrer)
2021-12-14 09:08:17 +01:00
Eelco Dolstra
95bd5da341 queryMissing(): Use a bigger thread pool
This is a temporary hack until we make queryMissing() async.

Closes #5324.
2021-12-13 21:11:37 +01:00
Eelco Dolstra
46d86e06ba Simplify 2021-12-13 20:28:53 +01:00
Eelco Dolstra
9529de2eed Merge branch 'arm32-personality' of https://github.com/cleverca22/nix 2021-12-13 19:58:40 +01:00
Eelco Dolstra
d17d46cfc2 More debug info 2021-12-13 19:03:08 +01:00
Eelco Dolstra
05fcc681ac Retry on ECONNREFUSED
https://hydra.nixos.org/build/161439235
2021-12-13 19:00:19 +01:00
Eelco Dolstra
6d30f9e6fe Explicitly make GC roots client sockets blocking
On macOS / BSD, these sockets inherit the non-blocking flag of the
server soocket, which is not what we want.

https://github.com/dotnet/runtime/issues/25069
https://bugs.python.org/issue7995

https://hydra.nixos.org/build/161439304
2021-12-13 18:59:50 +01:00
regnat
2eec2f765a Add a crude tracing mechansim for the build results
Add a `_NIX_TRACE_BUILT_OUTPUTS` environment variable that can be set to
a filename in which the result of each build will be logged.

This is intentionally crude and undocumented as it’s only meant to be a
temporary thing to assess the usefulness of CA derivations.
Any other use would need a cleaner re-implementation first.
2021-12-13 17:02:14 +01:00
regnat
55dbb7f1cc More properly track the status of CA builds
Make the build of unresolved derivations return the same status as the
resolved one, except in the case of an `AlreadyValid` in which case it
will return `ResolvesToAlreadyValid` to mean that the outputs of the unresolved
derivation weren’t known, but the resolved one is.
2021-12-13 17:02:13 +01:00
Gavin Ray
3542d4fe16
Incorporate suggestions from @edolstra 2021-12-10 19:02:22 -05:00
Eelco Dolstra
20b1290103 Ignore system.nfs4_acl
Closes #1584.
2021-12-10 15:12:55 +01:00
Eelco Dolstra
f9437b4f18 Merge branch 'master' of https://github.com/MagicRB/nix 2021-12-10 14:49:25 +01:00
Eelco Dolstra
bc57b3854e
Merge pull request #5695 from obsidiansystems/tidy-logging
Tidy up the logging
2021-12-09 15:31:08 +01:00
Gavin Ray
971382cab0
Better diagnostics if no valid signature found
I downloaded Nix tonight, and immediately broke it by accidentally removing the default binary caching.
After figuring this out, I also failed to fix it properly, due to using the wrong key for Nix's default binary cache

If the diagnostic message would have been clearer about what/where a "signature" for a "substituter" is + comes from, it probably would have saved me a few hours.
Maybe we can save other noobs the same pain?
2021-12-08 19:55:34 -05:00
Eelco Dolstra
92ff5b4254 Tweak warning 2021-12-07 22:22:02 +01:00
Eelco Dolstra
21206caf13 Merge remote-tracking branch 'origin/5712-ca-drvs-with-old-daemon' 2021-12-07 22:06:22 +01:00
Jan Tojnar
ae21aab456 Update manual links
Fixes: https://github.com/NixOS/nixos-homepage/issues/762
2021-12-06 16:42:57 +01:00
regnat
fa58bff1ab Fallback when the daemon is too old for CA derivations
Fix #5712
2021-12-06 11:45:18 +01:00
Eelco Dolstra
782837d934 Merge branch 'nix-env-install-suggestions' of https://github.com/tweag/nix 2021-12-01 21:47:28 +01:00
Arthur Gautier
21520297da reproducibility: hide non-reproducible settings from manual
Because the manual is generated from default values which are themselves
generated from various sources (cpuid, bios settings (kvm), number of
cores). This commit hides non-reproducible settings from the manual
output.
2021-12-01 17:25:58 +01:00
John Ericson
2f5c913d4a Fix #5299
No matter what, we need to resize the buffer to not have any scratch
space after we do the `read`. In the end of file case, `got` will be 0
from it's initial value.

Before, we forgot to resize in the EOF case with the break. Yes, we know
we didn't recieve any data in that case, but we still have the scatch
space to undo.

Co-Authored-By: Will Fancher <Will.Fancher@Obsidian.Systems>
2021-11-30 22:11:46 +00:00
John Ericson
95157b4e66 Push wopAddToStore old style stream adapters into smaller scopes
This doesn't fix the bug, but makes the code less difficult to read.
Also improve the comments, now that it is clear what part is needed in
each code path.
2021-11-30 22:10:58 +00:00
John Ericson
70a717f7a8 Nix daemon stream old wopAddToStore
No more buffering in string.
2021-11-30 21:55:53 +00:00
John Ericson
1f15441103 Tidy up the logging
Use the macros more, so we properly skip work when the log level
excludes. Also log the daemon operation number on the daemon side.
2021-11-30 20:23:13 +00:00
Eelco Dolstra
d5d0621250
Merge pull request #5603 from obsidiansystems/recursive-nix-system-feature
"recursive-nix" system feature only with experimental feature
2021-11-25 17:20:58 +01:00
Las Safin
8388d2c7c6
Make recursive-nix work even when not privileged
Before this, `setns` would fail when switching to the mount namespace,
since we did not have the privileges to do so when not root.

Closes #5360
2021-11-25 11:15:11 +00:00
John Ericson
286eb81143 "recursive-nix" system feature only with experimental feature 2021-11-23 20:19:04 +00:00
Alex Shabalin
b26cb0c9ac Fix use after free in content-address.cc
Inspired by https://github.com/NixOS/nix/pull/5599
2021-11-23 16:15:34 +01:00
Eelco Dolstra
dbfcaa607a
Merge pull request #5628 from matthewbauer/rosetta2-new-path
Set new rosetta 2 path in sandbox
2021-11-23 10:46:50 +01:00
Matthew Bauer
08b1ac3e38 Set new rosetta 2 path in sandbox
see:

https://github.com/NixOS/nix/pull/5388

and

https://github.com/NixOS/nix/pull/5251
2021-11-22 14:42:31 -06:00
Alex Shabalin
db2e4489a5 Unify #if linux 2021-11-22 13:57:56 +01:00
Alex Shabalin
a18d9269a5 Fix build warnings on MacOS 2021-11-19 15:22:31 +01:00
Alex Shabalin
4b28798bfc Offer suggestions for nix-env -i
Closes https://github.com/NixOS/nix/issues/972
2021-11-18 15:34:57 +01:00
Eelco Dolstra
0961c1068a Merge branch 'accept_conf' of https://github.com/tomberek/nix 2021-11-18 12:56:09 +01:00
Eelco Dolstra
262a3c7ce3 Simplify 2021-11-18 12:12:31 +01:00
Farid Zakaria
bc14465e08 Fix stack buffer overflow
Fix a stack buffer overflow found by running MemorySanitizer.
2021-11-18 04:05:25 +00:00
Eelco Dolstra
6463eaca14
Merge pull request #5472 from NixOS/async-realisation-substitution
async realisation substitution
2021-11-16 12:54:20 +01:00
Tom Bereknyei
30496af598 Adds an accept-flake-config flag 2021-11-12 09:50:07 -05:00
Eelco Dolstra
bceda30498 Typo 2021-11-12 13:41:15 +01:00
Sergei Trofimovich
edfc5b2f12 ca-specific-schema.sql: add index on RealisationsRefs(referrer) and (outputPath)
For a typical desktop system (~2K packages) we can easily get 100K
entries in RealisationsRefs. Without indices query for RealisationsRefs
requires linear scan.

RealisationsRefs(referrer)
--------------------------

Inefficiency is seen as a 100% CPU load of nix-daemon for the following
scenario:

    $ nix edit -f . bash # add unused environment variable, like FOO="1"
    # populate RealisationsRefs, build fresh system
    $ nix build -f nixos system --arg config '{ contentAddressedByDefault = true; }'
    $ nix edit -f . bash # add unused environment variable, like FOO="2"
    $ time nix build -f nixos system --arg config '{ contentAddressedByDefault = true; }'

In this case `bash `will be rebuilt a few times and then rest of CPU
time is spent on scanning RealisationsRefs table (about 5 CPU-minutes
on my machine).

Before the change:

    $ time nix build -f nixos system ... # step 4 above
    real    34m3,613s
    user    0m5,232s
    sys     0m0,758s

Of all this time about 29.5 minutes are taken by nix-daemon's CPU time.

After the change:

    $ time nix build -f nixos system ... # step 4 above
    real    4m50,061s
    user    0m5,038s
    sys     0m0,677s

Of all this time about 1 minute is taken by nix-daemon's CPU time.
Most of the time is spent polling for non-existent realisations on
cache-nixos.org.

Realisations(outputPath)
------------------------

After running CA system for two weeks I got ~1M entries in Realisations
table. `nix-collect-garbage` became very slow (seemingly 100 path deletions
per second). It happens due to a slow cascading delete from Realisations
triggered by deletion from ValidPaths.

The fix is to add an index on primary key from ValidPaths(id) that
triggers cascading deletions.

Before the change:
    $ time nix-collect-garbage -d --max-freed 100G
    <interrupted before finish, took too long>
    real    23m32.411s
    user    17m49.679s
    sys     4m50.609s

Most of time was spent in re-scanning Realisations table on each path deletion.

After the change:
    $ time nix-collect-garbage -d --max-freed 100G

    real    8m43.226s
    user    6m16.317s
    sys     1m40.188s

Time is spent scanning sqlite indices and in kernel when unlinking directories.
2021-11-10 08:32:05 +00:00
Eelco Dolstra
67179472df
Merge pull request #5494 from tweag/balsoft/allow-references-in-addPath
Allow references in addPath
2021-11-09 15:57:39 +01:00
Alexander Bantyev
0b005bc9d6
addToStore, addToStoreFromDump: refactor: pass refs by const reference
Co-Authored-By: Eelco Dolstra <edolstra@gmail.com>
2021-11-09 12:24:49 +03:00
Eelco Dolstra
ff2af4d64e Unshare mount namespace in main()
Doing it as a side-effect of calling LocalStore::makeStoreWritable()
is very ugly.

Also, make sure that stopping the progress bar joins the update
thread, otherwise that thread should be unshared as well.
2021-11-08 22:00:45 +01:00
Eelco Dolstra
7a71621b7c Merge branch 'fix-writable-shell' of https://github.com/yorickvP/nix 2021-11-08 21:12:51 +01:00
Alexander Bantyev
9d4dcff37a
addPath: allow paths with references
Since 4806f2f6b0, we can't have paths with
references passed to builtins.{path,filterSource}. This prevents many cases
of those functions called on IFD outputs from working. Resolve this by
passing the references found in the original path to the added path.
2021-11-05 22:41:30 +03:00
regnat
1f3c3a3785 Make the flake options work when using the daemon
When setting flake-local options (with the `nixConfig` field), forward
these options to the daemon in case we’re using one.

This is necessary in particular for options like `binary-caches` or
`post-build-hook` to make sense.

Fix <343239fc8a (r44356843)>
2021-11-05 16:19:16 +01:00
Doron Behar
14fcf17277 libstore: Use unix-dotfile vfs if useSQLiteWAL is false 2021-11-03 14:19:11 +02:00