Commit graph

3231 commits

Author SHA1 Message Date
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
regnat f4c869977c Make the DrvOutputSubstitutionGoal more async 2021-11-03 06:51:34 +01:00
regnat fbc70034b3 Make the realisation fetching from binary caches async
That way we can fetch several realisations from the same cache in
parallel
2021-11-03 06:51:34 +01:00
regnat 96670ed216 Expose an async interface for queryRealisation
Doesn’t change much so far because everything is still using it
synchronously, but should allow the binary cache to fetch stuff in
parallel
2021-11-03 06:51:34 +01:00
Eelco Dolstra e6795c4350 Style 2021-10-29 14:45:13 +02:00
Eelco Dolstra 6e30d9b69f Merge branch 'master' of https://github.com/alekswn/nix 2021-10-29 14:42:26 +02:00
Eelco Dolstra 33d04e8a8d Use nix::connect() to connect to the garbage collector 2021-10-28 22:51:11 +02:00
Eelco Dolstra 22c35ea5b8 Remove unused variable 2021-10-28 22:51:11 +02:00
Eelco Dolstra a7d4f3411e Merge remote-tracking branch 'origin/master' into non-blocking-gc 2021-10-28 14:56:55 +02:00
Eelco Dolstra f2280749b1 If max-jobs == 0, do preferLocalBuild on remote builders 2021-10-27 14:21:31 +02:00
Eelco Dolstra 6e684d1b87 daemon: Accept 'repeat' setting from untrusted users
Fixes #5352.
2021-10-27 13:09:13 +02:00
regnat af99941279 Make experimental-features a proper type
Rather than having them plain strings scattered through the whole
codebase, create an enum containing all the known experimental features.

This means that
- Nix can now `warn` when an unkwown experimental feature is passed
  (making it much nicer to spot typos and spot deprecated features)
- It’s now easy to remove a feature altogether (once the feature isn’t
  experimental anymore or is dropped) by just removing the field for the
  enum and letting the compiler point us to all the now invalid usages
  of it.
2021-10-26 07:02:31 +02:00
Alexander Bantyev b9234142f5
addToStore, addToStoreFromDump: add references argument
Allow to pass a set of references to be added as info to the added paths.
2021-10-23 21:30:51 +03:00
Alexey Novikov e989c83b44 Add error reporting to machine spec paser
Currently machine specification (`/etc/nix/machine`) parser fails
with a vague exception if the file had incorrect format.
This commit adds verbose exceptions and unit-tests for the parser.
2021-10-17 12:45:56 +04:00
Eelco Dolstra 10f9a8e77d Add a test for the non-blocking GC 2021-10-15 16:52:37 +02:00
Eelco Dolstra ac54c6faa6 Fix main GC thread exiting 2021-10-15 16:36:48 +02:00
Yorick fcb8af550f
Restore parent mount namespace in restoreProcessContext
This ensures any started processes can't write to /nix/store (except
during builds). This partially reverts 01d07b1e, which happened because
of #2646.

The problem was only happening after nix downloads anything, causing
me to suspect the download thread. The problem turns out to be:
"A  process  can't  join a new mount namespace if it is sharing
filesystem-related attributes with another process", in this case this
process is the curl thread.

Ideally, we might kill it before spawning the shell process, but it's
inside a static variable in the getFileTransfer() function. So
instead, stop it from sharing FS state using unshare(). A strategy
such as the one from #5057 (single-threaded chroot helper binary) is
also very much on the table.

Fixes #4337.
2021-10-15 16:25:49 +02:00
Eelco Dolstra e0936ae38f Fix crash when a GC client disconnects
The client thread can't just delete its own thread object from
connections, it has to detach it.
2021-10-15 16:12:21 +02:00
Eelco Dolstra 304180d0de Memoize queryReferrers() 2021-10-15 12:20:23 +02:00
yvt a9d9e55551 Add another path where a Rosetta 2 configuration file is possibly located 2021-10-15 09:48:15 +09:00
Eelco Dolstra 17e6ebcc90 Speed up GC by marking entire closures as live 2021-10-14 14:13:57 +02:00
Eelco Dolstra 0154fa30cf Remove GCState 2021-10-14 13:52:49 +02:00
Eelco Dolstra 0317ffdad3 Move deleteFromStore() 2021-10-14 13:34:48 +02:00
Eelco Dolstra 0be8cc1466 pathInfoCache: Use the entire base name as the cache key
This fixes a bug in the garbage collector where if a path
/nix/store/abcd-foo is valid, but we do a
isValidPath("/nix/store/abcd-foo.lock") first, then a negative entry
for /nix/store/abcd is added to pathInfoCache, so /nix/store/abcd-foo
is subsequently considered invalid and deleted.
2021-10-14 13:28:22 +02:00
Eelco Dolstra eab934cb2a Make the canReachRoots() traversal non-recursive 2021-10-14 12:34:32 +02:00
Eelco Dolstra 09b14ea97a Cleanup 2021-10-14 10:04:13 +02:00
Eelco Dolstra 35c98a59c5 Fix GC when there are cycles in the referrers graph
(where "referrers" includes the reverse of derivation outputs and
derivers). Now we do a full traversal to look if we can reach any
root. If not, all paths reached can be deleted.
2021-10-13 12:12:44 +02:00
Eelco Dolstra 1785ba2980 Simplify 2021-10-13 12:12:44 +02:00
Eelco Dolstra 262520fcfe Use a thread per connection 2021-10-13 12:12:44 +02:00
Eelco Dolstra ff453b06f9 Fix auto-gc 2021-10-13 12:12:44 +02:00
Eelco Dolstra 8614cf1334 Non-blocking garbage collector
The garbage collector no longer blocks other processes from
adding/building store paths or adding GC roots. To prevent the
collector from deleting store paths just added by another process,
processes need to connect to the garbage collector via a Unix domain
socket to register new temporary roots.
2021-10-13 12:12:44 +02:00
Eelco Dolstra 9947f1646a Remove syncWithGC() 2021-10-13 12:12:44 +02:00
Eelco Dolstra 8eac7dfad4 Remove trash directory 2021-10-13 12:12:44 +02:00
Eelco Dolstra abd685d373 Merge branch 'feature/comp-level' of https://github.com/tomberek/nix 2021-10-13 10:45:44 +02:00
Eelco Dolstra 5176b072ed Cleanup 2021-10-12 16:43:00 +02:00
Eelco Dolstra 3a778ea8a0 Merge branch 'nix-repl-download-interruption' of https://github.com/Ma27/nix 2021-10-12 16:34:38 +02:00
Tom Bereknyei 03bb8f84e0 Add compression level for NARs
Based off on @dtzWill's #2276
2021-10-12 02:14:36 -04:00
regnat 7466048d39 (partially) Revert "Don't copy in rethrow"
This reverts some parts of commit
8430a8f086 which was trying to rethrow
some exceptions while we weren’t in the context of a `catch` block,
causing some weird “terminate called without an active exception”
errors.

Fix #5368
2021-10-11 10:51:22 +02:00
Sergei Trofimovich d7d6fe44d6 libstore-tests: add libutil dependency (fix static link failure)
In https://github.com/NixOS/nix/pull/5350 we noticed link failures
pkgsStatic.nixUnstable. Adding explicit dependency on libutil fixes
libstore-tests linking.
2021-10-08 07:16:12 +01:00
Maximilian Bosch 0872659002
nix repl: properly deal with interruptions
When I stop a download with Ctrl-C in a `nix repl` of a flake, the REPL
refuses to do any other downloads:

    nix-repl> builtins.getFlake "nix-serve"
    [0.0 MiB DL] downloading 'https://api.github.com/repos/edolstra/nix-serve/tarball/e9828a9e01a14297d15ca41 error: download of 'e9828a9e01' was interrupted
    [0.0 MiB DL]
    nix-repl> builtins.getFlake "nix-serve"
    error: interrupted by the user
    [0.0 MiB DL]

To fix this issue, two changes were necessary:

* Reset the global `_isInterrupted` variable: only because a single
  operation was aborted, it should still be possible to continue the
  session.
* Recreate a `fileTransfer`-instance if the current one was shut down by
  an abort.
2021-10-07 23:58:02 +02:00
Eelco Dolstra 66c4b20d8b Typo 2021-10-07 13:34:04 +02:00
Eelco Dolstra c6718a9d95 Don't reset the logger in a vfork
9c766a40cb broke logging from the
daemon, because commonChildInit is called when starting the build hook
in a vfork, so it ends up resetting the parent's logger. So don't
vfork.

It might be best to get rid of vfork altogether, but that may cause
problems, e.g. when we call an external program like git from the
evaluator.
2021-10-06 13:54:59 +02:00
Eelco Dolstra fd57e7074f
Merge pull request #5335 from edolstra/socket-paths
Support arbitrary-length socket paths
2021-10-05 17:36:07 +02:00
Eelco Dolstra 3b7f4c7d9d Add FIXME about ptsname 2021-10-05 11:04:46 +02:00
Eelco Dolstra 43d4d75e22 Connect/bind Unix domain sockets in a child process
In the child process, we can do a chdir() and avoid the problem of the
path not fitting into sockaddr_un.
2021-10-05 10:44:59 +02:00
Eelco Dolstra 77ebbc9f54 Add a test for RefScanSink and clean up the code
Issue #5322.
2021-10-04 14:29:42 +02:00
Eelco Dolstra ef34fd0656 scanForReferences(): Use a StorePathSet 2021-10-04 13:47:38 +02:00
Sergei Trofimovich 621aa65325 local-derivation-goal.cc: downgrade "warning: rewriting hashes in..." down to debug
Before the changes when building the whole system with
`contentAddressedByDefault = true;` we get many noninformative messages:

    $ nix build -f nixos system --keep-going
    ...
    warning: rewriting hashes in '/nix/store/...-clang-11.1.0.drv.chroot/nix/store/...-11.1.0'; cross fingers
    warning: rewriting hashes in '/nix/store/...-clang-11.1.0.drv.chroot/nix/store/...-11.1.0-dev'; cross fingers
    warning: rewriting hashes in '/nix/store/...-clang-11.1.0.drv.chroot/nix/store/...-11.1.0-python'; cross fingers
    error: 2 dependencies of derivation '/nix/store/...-hub-2.14.2.drv' failed to build
    warning: rewriting hashes in '/nix/store/...-subversion-1.14.1.drv.chroot/nix/store/...-subversion-1.14.1-dev'; cross fingers
    warning: rewriting hashes in '/nix/store/...-subversion-1.14.1.drv.chroot/nix/store/...-subversion-1.14.1-man'; cross fingers
    ...

Let's downgrade these messages down to debug().
2021-10-01 17:41:44 +01:00
Eelco Dolstra 7cc220825d
Merge pull request #5167 from Ma27/keep-failed-on-ssh-remote-build
nix-store --serve: pass on `settings.keepFailed` from SSH store
2021-10-01 16:35:02 +02:00
John Ericson 242f9bf3dc std::visit by reference
I had started the trend of doing `std::visit` by value (because a type
error once mislead me into thinking that was the only form that
existed). While the optomizer in principle should be able to deal with
extra coppying or extra indirection once the lambdas inlined, sticking
with by reference is the conventional default. I hope this might even
improve performance.
2021-09-30 21:35:09 +00:00
Eelco Dolstra 6b5efeafd1
Merge pull request #5295 from Ma27/bmcheck-fod-mismatch
build: also throw hash-mismatch errors if `buildMode == bmCheck`
2021-09-29 10:13:45 +02:00
Maximilian Bosch bb1a851bcf
build: also throw hash-mismatch errors if buildMode == bmCheck
This actually bit me quite recently in `nixpkgs` because I assumed that
`nix-build --check` would also error out if hashes don't match anymore[1]
and so I wrongly assumed that I couldn't reproduce the mismatch error.

The fix is rather simple, during the output registration a so-called
`delayedException` is instantiated e.g. if a FOD hash-mismatch occurs.
However, in case of `nix-build --check` (or `--rebuild` in case of `nix
build`), the code-path where this exception is thrown will never be
reached.

By adding that check to the if-clause that causes an early exit in case
of `bmCheck`, the issue is gone. Also added a (previously failing)
test-case to demonstrate the problem.

[1] https://github.com/NixOS/nixpkgs/pull/139238, the underlying issue
    was that `nix-prefetch-git` returns different hashes than `fetchgit`
    because the latter one fetches submodules by default.
2021-09-27 15:44:39 +02:00
Eelco Dolstra 8430a8f086 Don't copy in rethrow 2021-09-27 14:38:10 +02:00
Eelco Dolstra 362d8f925e
Merge pull request #5253 from edolstra/flake-ifd
Don't allow IFD in flakes by default
2021-09-24 10:48:23 +02:00
Eelco Dolstra ea9df6fe51 Shut down write side before draining the read side
This is important if the remote side *does* execute
nix-store/nix-daemon successfully, but stdout is polluted
(e.g. because the remote user's bashrc script prints something to
stdout). In that case we have to shutdown the write side to force the
remote nix process to exit.
2021-09-23 18:01:04 +02:00
Eelco Dolstra 994348e9e0 SSHStore / LegacySSHStore: Show a better error message if the remote is "nologin"
Instead of

  error: serialised integer 7161674624452356180 is too large for type 'j'

we now get

  error: 'nix-store --serve' protocol mismatch from 'sshtest@localhost', got 'This account is currently not available.'

Fixes https://github.com/NixOS/nixpkgs/issues/37287.
2021-09-23 17:50:29 +02:00
Eelco Dolstra 60642aa5e2 Remove risky char * 2021-09-23 12:07:50 +02:00
Eelco Dolstra 198fa786a1 Add some more instrumentation 2021-09-23 11:42:33 +02:00
Eelco Dolstra d8c10028d9 Make setDefault() typed 2021-09-22 14:15:35 +02:00
Eelco Dolstra bcd73ebf60 Add missing #include
Fixes #5282.
2021-09-22 12:14:50 +02:00
Michael Bishop 374fe49ff7 set the PER_LINUX32 personality flag, when building for armv6l-linux or armv7l-linux
this prevents 32bit builds from detecting a 64bit kernel and picking the wrong target
2021-09-19 23:07:10 -03:00
Gregor Kleen fd67a0f927 Fix scheme argument to s3 cache 2021-09-17 10:45:19 +02:00
Emily 56025ad3b1 sandbox: allow Rosetta 2 on Darwin
This allows sandboxed x86_64-darwin builds on aarch64-darwin.
2021-09-15 02:02:03 +01:00
Eelco Dolstra 4b738fc7a9 Add 'nix profile wipe-history' command 2021-09-14 20:35:41 +02:00
Eelco Dolstra f359b9981b Generations -> profile versions 2021-09-14 19:57:45 +02:00
Eelco Dolstra 817562e694 Add "nix profile rollback" command 2021-09-14 19:32:33 +02:00
Eelco Dolstra d589a6aa8a
Merge pull request #5247 from edolstra/stablize-ca-references
Remove the 'ca-references' feature check
2021-09-14 15:42:50 +02:00