Commit graph

3836 commits

Author SHA1 Message Date
Eelco Dolstra
c164d304f3 nix develop: Set personality
This makes 'nix develop' set the Linux personality in the same way
that the actual build does, allowing a command like 'nix develop
nix#devShells.i686-linux.default' on x86_64-linux to work correctly.
2022-12-23 16:33:55 +01:00
rski
d034ed1891 src/libstore: Print the reason opening the DB failed
Without this, the error is lost, and it makes for a hard to debug
situation. Also remove some of the busyness inside the sqlite_open_v2
args.

The errcode returned is not the extended one. The only way to make open
return an extended code, would be to add SQLITE_OPEN_EXRESCODE to the
flags. In the future it might be worth making this change,
which would also simplify the existing SQLiteError code.
2022-12-23 02:55:51 +02:00
mupdt
bc8ab21c5a [PDT] TDE-3114: prevent a race-condition when creating the S3 cache 2022-12-21 04:50:40 -05:00
Robert Hensing
c965f35de7 Improve sqlite error messages
They did not include the detailed error message, losing essential
information for troubleshooting.

Example message:

    warning: creating statement 'insert or rplace into NARs(cache, hashPart, namePart, url, compression, fileHash, fileSize, narHash, narSize, refs, deriver, sigs, ca, timestamp, present) values (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, 1)': at offset 10: SQL logic error, near "rplace": syntax error (in '/tmp/nix-shell.grQ6f7/nix-test/tests/binary-cache/test-home/.cache/nix/binary-cache-v6.sqlite')

It's not the best example; more important information will be in
the message for e.g. a constraint violation.

I don't see why this specific error is printed as a warning, but
that's for another commit.
2022-12-17 14:51:37 +01:00
Taeer Bar-Yam
e5eb05c599 getBuildLog: factor out resolving derivations 2022-12-15 15:58:54 -05:00
Eelco Dolstra
0687e16c4a Fix a crash in DerivedPath::Built::toJSON() with impure derivations
The use of 'nullptr' here didn't result in a null JSON value, but in a
nullptr being cast to a string, which aborts.
2022-12-15 16:02:27 +01:00
Naïm Favier
1f3c0a3c1d
Allow disabling build users by unsetting build-users-group
Unsetting `build-users-group` (without `auto-allocate-uids` enabled)
gives the following error:

```
src/libstore/lock.cc:25: static std::unique_ptr<nix::UserLock> nix::SimpleUserLock::acquire(): Assertion `settings.buildUsersGroup != ""' failed.
```

Fix the logic in `useBuildUsers` and document the default value
for `build-users-group`.
2022-12-14 00:40:30 +01:00
John Ericson
5273cf4c97 Merge remote-tracking branch 'upstream/master' into indexed-store-path-outputs 2022-12-12 17:40:49 -05:00
John Ericson
dabb03b8d0 Merge remote-tracking branch 'upstream/master' into indexed-store-path-outputs 2022-12-12 17:36:02 -05:00
John Ericson
dc075dcdd0
Apply suggestions from code review
Co-authored-by: Eelco Dolstra <edolstra@gmail.com>
2022-12-12 16:26:10 -05:00
Eelco Dolstra
ae5f62a894 Move isUri() and resolveUri() out of filetransfer.cc
These are purely related to NIX_PATH / -I command line parsing, so put
them in libexpr.
2022-12-12 14:05:35 +01:00
Eelco Dolstra
7396844676
Merge pull request #7421 from edolstra/lazy-trees-trivial-changes
Trivial changes from the lazy-trees branch
2022-12-12 13:52:56 +01:00
John Ericson
1879c7c95e
Merge branch 'master' into indexed-store-path-outputs 2022-12-12 07:33:36 -05:00
Théophane Hufschmitt
2affb19c92
Merge pull request #7409 from tweag/fix-6383
check the store for input before failing (hopefully fix #6383)
2022-12-09 06:33:30 +01:00
Taeer Bar-Yam
3b27181ee5 fix missing function after rebase 2022-12-08 16:59:21 -05:00
regnat
04b113f6cb Fix nix log with CA derivations
Fix #6209

When trying to run `nix log <installable>`, try first to resolve the derivation pointed to
by `<installable>` as it is the resolved one that holds the build log.

This has a couple of shortcomings:
1. It’s expensive as it requires re-reading the derivation
2. It’s brittle because if the derivation doesn’t exist anymore or can’t
   be resolved (which is the case if any one of its build inputs is missing),
   then we can’t access the log anymore

However, I don’t think we can do better (at least not right now).
The alternatives I see are:
1. Copy the build log for the un-resolved derivation. But that means a
   lot of duplication
2. Store the results of the resolving in the db. Which might be the best
   long-term solution, but leads to a whole new class of potential
   issues.
2022-12-08 16:03:20 -05:00
Eelco Dolstra
703d863a48 Trivial changes from the lazy-trees branch 2022-12-07 14:06:34 +01:00
Linus Heckemann
8e0946e8df Remove repeat and enforce-determinism options
These only functioned if a very narrow combination of conditions held:

- The result path does not yet exist (--check did not result in
  repeated builds), AND
- The result path is not available from any configured substituters, AND
- No remote builders that can build the path are available.

If any of these do not hold, a derivation would be built 0 or 1 times
regardless of the repeat option. Thus, remove it to avoid confusion.
2022-12-07 11:36:48 +01:00
Taeer Bar-Yam
1c8de7d3d0 improve style 2022-12-06 11:25:38 -05:00
Eelco Dolstra
54906bc93c
Merge pull request #7382 from fricklerhandwerk/doc-automatic-uid
move documentation on `auto-allocate-uids` to options docs
2022-12-06 11:31:34 +01:00
Eelco Dolstra
484578d3f9
Tweak option descriptions 2022-12-06 10:30:36 +01:00
Taeer Bar-Yam
8c7661da09 check the store for input before failing (hopefully fix #6383) 2022-12-05 23:22:38 -05:00
Taeer Bar-Yam
e4f9f3bf24 check the store for input before failing (hopefully fix #6700) 2022-12-05 11:27:47 -05:00
Eelco Dolstra
1e6a5d1ff6 Clean up cgroup handling in getMaxCPU()
Also, don't assume in LocalDerivationGoal that cgroups are mounted on
/sys/fs/cgroup.
2022-12-02 12:59:13 +01:00
Eelco Dolstra
1211e59a03 Move cgroup.{cc,hh} to libutil 2022-12-02 12:38:03 +01:00
Valentin Gagarin
0ea62670ed move documentation on auto-allocate-uids to options docs
this is where it belongs and can be found together with the other
options.
2022-12-01 04:40:02 +01:00
Eelco Dolstra
fbc53e97ed
Merge pull request #3600 from NixOS/auto-uid-allocation
Automatic UID allocation
2022-11-29 14:01:42 +01:00
Eelco Dolstra
4f762e2b02 Restore ownership of / for non-uid-range builds 2022-11-29 13:10:53 +01:00
Eelco Dolstra
67bcb99700 Add a setting for enabling cgroups 2022-11-28 21:54:02 +01:00
Eelco Dolstra
ff12d1c1a1 Check that auto-allocated UIDs don't clash with existing accounts 2022-11-28 20:49:17 +01:00
Eelco Dolstra
dbf78a7ada
Merge pull request #7313 from yorickvP/nlohmann-everywhere
Replace src/libutil/json.cc with nlohmann
2022-11-28 15:03:48 +01:00
Eelco Dolstra
5b798f6cae Fix random client failures during GC server shutdown
We need to close the GC server socket before shutting down the active
GC client connections, otherwise a client may (re)connect and get
ECONNRESET. But also handle ECONNRESET for resilience.

Fixes random failures like

  GC socket disconnected
  connecting to '/tmp/nix-shell.y07M0H/nix-test/default/var/nix/gc-socket/socket'
  sending GC root '/tmp/nix-shell.y07M0H/nix-test/default/store/kb5yzija0f1x5xkqkgclrdzldxj6nnc6-non-blocking'
  reading GC root from client: error: unexpected EOF reading a line
  1 store paths deleted, 0.00 MiB freed
  error: reading from file: Connection reset by peer

in gc-non-blocking.sh.
2022-11-27 12:57:18 +01:00
John Ericson
26534f141c
Merge branch 'master' into indexed-store-path-outputs 2022-11-25 08:14:32 -05:00
Eelco Dolstra
6292d5616e Merge remote-tracking branch 'origin/master' into auto-uid-allocation 2022-11-23 11:16:09 +01:00
Eelco Dolstra
05d0892443
Merge pull request #7328 from edolstra/nix-build-stats
nix build --json: Include build statistics
2022-11-22 14:41:15 +01:00
Eelco Dolstra
3d23b9d032 SimpleUserLock::getSupplementaryGIDs(): Filter out main gid
This avoids having the user's gid in the supplementary group list as
well.
2022-11-22 10:26:17 +01:00
Eelco Dolstra
b37c2d84b6 Always call setgroups()
We shouldn't skip this if the supplementary group list is empty,
because then the sandbox won't drop the supplementary groups of the
parent (like "root").
2022-11-22 10:26:17 +01:00
Eelco Dolstra
02c02ee7c3
Merge pull request #6456 from amjoseph-nixpkgs/seccomp-mips
local-derivation-goal.cc: enable seccomp filters for mips{32,64}
2022-11-21 23:03:00 +01:00
Eelco Dolstra
c776dfbb35
Use hex for startId
Co-authored-by: Linus Heckemann <git@sphalerite.org>
2022-11-21 18:46:55 +01:00
Eelco Dolstra
9d17ce07e8 AutoUserLock: If sandboxing is disabled, use the build users group
We have to use a gid that has write access to the Nix store.
2022-11-21 12:55:49 +01:00
Eelco Dolstra
f0baa5c128 nix build --json: Include build statistics
Example:

  # nix build -L --extra-experimental-features cgroups --impure --expr 'with import <nixpkgs> {}; runCommand "foo" {} "dd if=/dev/urandom bs=1M count=1024 | md5sum; mkdir $out"' --json
  [
    {
      "cpuSystem": 1.911431,
      "cpuUser": 1.214249,
      "drvPath": "/nix/store/xzdqz67xba18hljhycp0hwfigzrs2z69-foo.drv",
      "outputs": {
        "out": "/nix/store/rh9mc9l2gkpq8kn2sgzndr6ll7ffjh6l-foo"
      },
      "startTime": 1669024076,
      "stopTime": 1669024079
    }
  ]
2022-11-21 12:06:01 +01:00
Eelco Dolstra
e7a5b76844 Rename derivedPathsWithHintsToJSON -> builtPathsToJSON 2022-11-21 11:56:20 +01:00
Eelco Dolstra
82d5cf2a76 Fix macOS build 2022-11-21 11:45:41 +01:00
Eelco Dolstra
653b32a78f Merge remote-tracking branch 'origin/master' into auto-uid-allocation 2022-11-21 11:33:23 +01:00
Eelco Dolstra
ec45f4b82e Fix indentation 2022-11-21 11:12:45 +01:00
Eelco Dolstra
300753d594 nix build --json: Include build statistics
Example:

  # nix build -L --extra-experimental-features cgroups --impure --expr 'with import <nixpkgs> {}; runCommand "foo" {} "dd if=/dev/urandom bs=1M count=1024 | md5sum; mkdir $out"' --json
  [
    {
      "cpuSystem": 1.911431,
      "cpuUser": 1.214249,
      "drvPath": "/nix/store/xzdqz67xba18hljhycp0hwfigzrs2z69-foo.drv",
      "outputs": {
        "out": "/nix/store/rh9mc9l2gkpq8kn2sgzndr6ll7ffjh6l-foo"
      },
      "startTime": 1669024076,
      "stopTime": 1669024079
    }
  ]
2022-11-21 10:49:01 +01:00
Eelco Dolstra
f538ee4342 Rename derivedPathsWithHintsToJSON -> builtPathsToJSON 2022-11-21 09:38:08 +01:00
Eelco Dolstra
e6b71f84a0 Use cgroup.kill to quickly kill cgroups 2022-11-18 16:59:36 +01:00
Eelco Dolstra
fa68eb367e Get CPU stats from the cgroup 2022-11-18 13:40:59 +01:00
Eelco Dolstra
128910ba23 Separate cgroup support from auto-uid-allocation
The new experimental feature 'cgroups' enables the use of cgroups for
all builds. This allows better containment and enables setting
resource limits and getting some build stats.
2022-11-18 10:39:28 +01:00
Eelco Dolstra
f423d4425f Fix segfault in unprivileged mode 2022-11-17 11:56:45 +01:00
Yorick van Pelt
09f00dd4d0
Replace src/libutil/json.cc with nlohmann json generation 2022-11-16 16:50:50 +01:00
Guillaume Maudoux
a7d2a3d087 Allow system certs access to fixed-output derivations 2022-11-16 15:23:59 +01:00
Robert Hensing
bcd298d39b libstore/derivation-goal: Elaborate a TODO for performance concern 2022-11-15 17:57:40 +01:00
Théophane Hufschmitt
4bf70b74a7
Merge pull request #7294 from tobim/support-aws-sdk-1.10
libstore: link to aws-crt-cpp
2022-11-15 16:51:09 +01:00
Théophane Hufschmitt
3ade5f5d60
Merge pull request #7283 from hercules-ci/issue-6572
Fix #6572 `requires non-existent output`
2022-11-15 16:24:24 +01:00
Robert Hensing
7e162c69fe derivation-goal: Fix requires non-existing output error
It occurred when a output of the dependency was already available,
so it didn't need rebuilding and didn't get added to the
inputDrvOutputs.
This process-related info wasn't suitable for the purpose of finding
the actual input paths for the builder. It is better to do this in
absolute terms by querying the store.
2022-11-14 17:52:55 +01:00
Théophane Hufschmitt
8b4352d79b Merge remote-tracking branch 'nixos/master' into readFile-scan-references 2022-11-14 15:00:05 +01:00
Tobias Mayer
07f2cb1e8f
libstore: link to aws-crt-cpp
This change is needed to support aws-sdk-cpp 1.10 and newer.

I opted not to make this dependent on the sdk version because
the crt dependency has been in the interface of the older
sdk as well, and it was only coincidence that libstore didn't
make use of any privately defined symbols directly.
2022-11-12 14:34:23 +01:00
Naïm Favier
e7ed9ae0c7
Restrict readFile context to references that appear in the string
When calling `builtins.readFile` on a store path, the references of that
path are currently added to the resulting string's context.

This change makes those references the *possible* context of the string,
but filters them to keep only the references whose hash actually appears
in the string, similarly to what is done for determining the runtime
references of a path.
2022-11-11 13:04:34 +01:00
Eelco Dolstra
6c6eff8ac4 Remove the SystemdCgroup feature 2022-11-10 17:24:12 +01:00
Eelco Dolstra
05d258667d Fix build on macOS 2022-11-08 08:00:29 -08:00
Eelco Dolstra
2fde7e0108 Split auto UID allocation from cgroups
Cgroups are now only used for derivations that require the uid-range
range feature. This allows auto UID allocation even on systems that
don't have cgroups (like macOS).

Also, make things work on modern systems that use cgroups v2 (where
there is a single hierarchy and no "systemd" controller).
2022-11-08 16:03:42 +01:00
Eelco Dolstra
b95faccf03 Merge remote-tracking branch 'origin/master' into auto-uid-allocation 2022-11-03 17:43:40 +01:00
John Ericson
13f2a6f38d
Merge branch 'master' into indexed-store-path-outputs 2022-10-28 23:22:18 +01:00
Théophane Hufschmitt
f8d0193383 Pass the right argv when calling the build hook
Call it as `['nix', '__build-remote', ... ]` rather than the previous
`["__build-remote", "nix __build-remote", ... ]` which seemed to have
been most likely unintended
2022-10-27 11:53:04 +02:00
Austin Kiekintveld
8e7804273c Defer to SSH config files for ForwardAgent option
Currently, Nix passes `-a` when it runs commands on a remote machine via
SSH, which disables agent forwarding. This causes issues when the
`ForwardAgent` option is set in SSH config files, as the command line
operation always overrides those.

In particular, this causes issues if the command being run is `sudo`
and the remote machine is configured with the equivalent of NixOS's
`security.pam.enableSSHAgentAuth` option. Not allowing SSH agent
forwarding can cause authentication to fail unexpectedly.

This can currently be worked around by setting `NIX_SSHOPTS="-A"`, but
we should defer to the options in the SSH config files to be least
surprising for users.
2022-10-22 19:51:22 -05:00
Graham Bennett
4563e80363 Fix C++20 warnings 2022-10-22 15:16:46 +01:00
Graham Bennett
c5fd34a14e Build with C++20 2022-10-22 14:24:25 +01:00
Eelco Dolstra
e136d57f26
Implement BinaryCacheStore::queryPathFromHashPart() 2022-10-18 17:48:09 +02:00
Eelco Dolstra
3093bd3a85
Merge pull request #7168 from NixOS/rosetta-test
Improve Rosetta detection
2022-10-14 17:35:57 +02:00
Eelco Dolstra
285277a61a Remove useless debug statements
We haven't parsed the '-v' command line flags yet when this code executes,
so we can't actually get debug output here.
2022-10-14 00:35:33 -07:00
Eelco Dolstra
ddd5503950 Use /usr/bin/true 2022-10-14 00:34:31 -07:00
Eelco Dolstra
0359d6d123 Fix error display if execve() in the builder fails
After we've send "\2\n" to the parent, we can't send a serialized
exception anymore. It will show up garbled like

  $ nix-build --store /tmp/nix --expr 'derivation { name = "foo"; system = "x86_64-linux"; builder = "/foo/bar"; }'
  this derivation will be built:
    /nix/store/xmdip0z5x1zqpp6gnxld3vqng7zbpapp-foo.drv
  building '/nix/store/xmdip0z5x1zqpp6gnxld3vqng7zbpapp-foo.drv'...

  ErrorErrorEexecuting '/foo/bar': No such file or directory
  error: builder for '/nix/store/xmdip0z5x1zqpp6gnxld3vqng7zbpapp-foo.drv' failed with exit code 1
2022-10-13 21:35:16 +02:00
Eelco Dolstra
96eb5ef156 Improve Rosetta detection
Turns out that one of those *.plist files can exist even if Rosetta is
not installed. So let's just try to run an x86_64-darwin binary
directly.
2022-10-13 11:46:16 -07:00
Steam Deck User
a86916eb72 Make warning about chroot store location more accurate
While trying to use an alternate directory for my Nix installation, I
noticed that nix's output didn't reflect the updated state
directory. This patch corrects that and now prints the warning before
attempting to create the directory (if the directory creation fails,
it wouldn't have been obvious why nix was attempting to create the
directory in the first place).

With this patch, I now get the following warning:

    warning: '/home/deck/.var/app/org.nixos.nix/var/nix' does not
    exist, so Nix will use '/home/deck/.local/share/nix/root' as a
    chroot store
2022-10-12 12:12:12 -07:00
Valentin Gagarin
927234cfb2
Merge pull request #6870 from amjoseph-nixpkgs/pr/doc/explain-local-remote-binary-substituter 2022-10-05 09:01:42 +02:00
Eelco Dolstra
89ca75c9f9
Merge pull request #7080 from squalus/nar-close-file
archive: check close errors when extracting nars
2022-09-30 12:58:28 +02:00
Théophane Hufschmitt
db29ddd113
Merge pull request #7078 from obsidiansystems/trustworthy-signature
"valid signature" -> "signature by a trusted key"
2022-09-24 12:52:35 +02:00
Théophane Hufschmitt
74276cb354
Merge pull request #7079 from matthewbauer/allow-untrusted-settings
Allow pass max-silent-time and build-poll-interval to daemon untrusted
2022-09-24 12:47:49 +02:00
Eelco Dolstra
c13007f012
Merge pull request #7059 from NixOS/remove-useless-ca-file-message
Remove a useless debug message in filetransfer.cc
2022-09-24 10:39:23 +02:00
John Ericson
60e23c8bae
Apply suggestions from code review
Co-authored-by: Valentin Gagarin <valentin.gagarin@tweag.io>
Co-authored-by: Rune K. Svendsen <runesvend@gmail.com>
2022-09-23 13:57:57 -04:00
squalus
223f8dace0 archive: check close errors when extracting nars 2022-09-22 12:50:32 -07:00
Matthew Bauer
6e049ae607 Allow pass max-silent-time and build-poll-interval to daemon untrusted
These settings seem harmless, they control the same polling
functionality that timeout does, but with different behavior. Should
be safe for untrusted users to pass in.
2022-09-22 13:59:16 -05:00
John Ericson
a2a8cb10ac Dodge "trusted" vs "trustworthy" by being explicit
Hopefully this is best!
2022-09-22 14:37:52 -04:00
John Ericson
752f967c0f "valid signature" -> "trustworthy signature"
I just had a colleague get confused by the previous phrase for good
reason. "valid" sounds like an *objective* criterion, e.g. and *invalid
signature* would be one that would be trusted by no one, e.g. because it
misformatted or something.

What is actually going is that there might be a signature which is
perfectly valid to *someone else*, but not to the user, because they
don't trust the corresponding public key. This is a *subjective*
criterion, because it depends on the arbitrary and personal choice of
which public keys to trust.

I therefore think "trustworthy" is a better adjective to use. Whether
something is worthy of trust is clearly subjective, and then "trust"
within that word nicely evokes `trusted-public-keys` and friends.
2022-09-22 10:49:31 -04:00
squalus
1b595026e1 Improve durability of schema version file writes
- call close explicitly in writeFile to prevent the close exception
  from being ignored
- fsync after writing schema file to flush data to disk
- fsync schema file parent to flush metadata to disk

https://github.com/NixOS/nix/issues/7064
2022-09-19 20:13:30 -07:00
Théophane Hufschmitt
0f977bf91e
Remove a useless debug message in filetransfer.cc
Remove the `verify TLS: Nix CA file = 'blah'` message that Nix used to print when fetching anything as it's both useless (`libcurl` prints the same info in its logs) and misleading (gives the impression that a new TLS connection is being established which might not be the case because of multiplexing. See #7011 )
2022-09-19 08:42:43 +02:00
Théophane Hufschmitt
0f64bf445a
Merge pull request #6994 from agbrooks/master
Prevent tempdir from being GC-ed before addToStoreFromDump completes
2022-09-13 09:23:16 +02:00
Andrew Brooks
565d888e0f Address PR feedback on #6694 2022-09-12 11:33:23 -05:00
Andrew Brooks
84fe75a12a Keep created temp dirs inside store, but protect from GC
Implements the approach suggested by feedback on PR #6994, where
tempdir paths are created in the store (now with an exclusive lock).

As part of this work, the currently-broken and unused
`createTempDirInStore` function is updated to create an exclusive lock
on the temp directory in the store.

The GC now makes a non-blocking attempt to lock any store directories
that "look like" the temp directories created by this function, and if
it can't acquire one, ignores the directory.
2022-09-06 17:48:00 -05:00
Andrew Brooks
1f041ac54f Prevent tempdir from being GC-ed before addToStoreFromDump has renamed it
This fixes issue 6823 by placing the tempdir used in LocalStore::addToStoreFromDump
outside the Nix store, where automatic GC is no longer a concern.
2022-09-02 18:32:35 -05:00
Matthew Bauer
4894e567fb Don’t readDerivation if impure derivations feature is disabled
readDerivation is pretty slow, and while it may not be significant for
some use cases, on things like ghc-nix where we have thousands of
derivations is really slows things down.

So, this just doesn’t do the impure derivation check if the impure
derivation experimental feature is disabled. Perhaps we could cache
the result of isPure() and keep the check, but this is a quick fix to
for the slowdown introduced with impure derivations features in 2.8.0.
2022-09-02 11:46:34 -05:00
Adam Joseph
1ab913467e linkify mention of other options 2022-09-01 18:03:35 -07:00
Adam Joseph
59dc8346ca move substituter signature-checking conditions to configuration file documentation 2022-09-01 17:51:56 -07:00
Eelco Dolstra
7918adbb62
Merge pull request #6954 from winterqt/darwin-sandbox-trustd
fix(libstore): allow access to trustd on macOS
2022-08-26 11:45:00 +02:00
Winter
8e5659423e fix(libstore): allow access to trustd on macOS 2022-08-24 13:09:44 -04:00
Eelco Dolstra
56d97d4b4d Remove redundant Finally 2022-08-24 14:49:58 +02:00
Eelco Dolstra
8d906b1f3b Fix macOS build 2022-08-24 14:11:03 +02:00
Eelco Dolstra
f0358ed465 Fix a hang in nix-copy-ssh.sh
This hang for some reason didn't trigger in the Nix build, but did
running 'make installcheck' interactively. What happened:

* Store::addMultipleToStore() calls a SinkToSource object to copy a
  path, which in turn calls LegacySSHStore::narFromPath(), which
  acquires a connection.

* The SinkToSource object is not destroyed after the last bytes has
  been read, so the coroutine's stack is still alive and its
  destructors are not run. So the connection is not released.

* Then when the next path is copied, because max-connections = 1,
  LegacySSHStore::narFromPath() hangs forever waiting for a connection
  to be released.

The fix is to make sure that the source object is destroyed when we're
done with it.
2022-08-23 14:19:53 +02:00
Eelco Dolstra
f865048332 Indentation 2022-08-22 15:32:53 +02:00
Eelco Dolstra
4c96761c2b Merge remote-tracking branch 'origin/master' into parallel-nix-copy 2022-08-22 15:29:10 +02:00
Eelco Dolstra
8d84634e26
Merge pull request #6926 from rapenne-s/download_limit
add a nix.conf option to set a download speed limit
2022-08-22 14:57:19 +02:00
Eelco Dolstra
c21b1a7e67
Spelling 2022-08-22 14:14:14 +02:00
Solène Rapenne
caad87e6db
Better documentation wording
Co-authored-by: Anderson Torres <torres.anderson.85@protonmail.com>
2022-08-20 18:21:36 +02:00
Solene Rapenne
0d2bf7acf9 add a nix.conf option to set a download speed limit 2022-08-19 12:40:22 +02:00
pennae
7d934f7880 don't read outputs into memory for output rewriting
RewritingSink can handle being fed input where a reference crosses a
chunk boundary. we don't need to load the whole source into memory, and
in fact *not* loading the whole source lets nix build FODs that do not
fit into memory (eg fetchurl'ing data files larger than system memory).
2022-08-19 11:26:26 +02:00
Eelco Dolstra
53e7b7e8ac Remove warnLargeDump()
This message was unhelpful (#1184) and probably misleading since
memory is O(1) in most cases now.
2022-08-17 11:32:01 +02:00
Théophane Hufschmitt
8f3fdef1e0
Merge pull request #6850 from NinjaTrappeur/nin/build-check
Fix Nix build --check flag
2022-08-10 17:44:06 +02:00
Théophane Hufschmitt
90f9680733 Only use renameFile where needed
In most places the fallback to copying isn’t needed and can actually be
bad, so we’d rather not transparently fallback
2022-08-03 10:27:25 +02:00
Théophane Hufschmitt
d71d9e9fbf moveFile -> renameFile
`move` tends to have this `mv` connotation of “I will copy it for you if
needs be”
2022-08-03 10:27:25 +02:00
Théophane Hufschmitt
c2de0a232c Create a wrapper around stdlib’s rename
Directly takes some c++ strings, and gently throws an exception on error
(rather than having to inline this logic everywhere)
2022-08-03 10:27:25 +02:00
Félix Baylac-Jacqué
1467a98d4c
derivation-goal.cc: remove bmCheck custom return branch on buildDone
Once a derivation goal has been completed, we check whether or not
this goal was meant to be repeated to check its output.

An early return branch was preventing the worker to reach that repeat
code branch, hence breaking the --check command (#2619).

It seems like this early return branch is an artifact of a passed
refactoring. As far as I can tell, buildDone's main branch also
cleanup the tmp directory before returning.
2022-08-01 11:39:19 +02:00
Théophane Hufschmitt
2805439335
Merge pull request #6814 from amjoseph-nixpkgs/pr/sandbox-error-messages
local-derivation-goal.cc: improve error messages when sandboxing fails
2022-07-22 13:27:52 +02:00
Théophane Hufschmitt
7ed91d6c6a
Merge branch 'master' into parallel-nix-copy 2022-07-20 10:05:34 +02:00
Alex Wied
722de8ddcc libstore/globals.cc: Move cgroup detection to libutil 2022-07-19 16:25:53 -04:00
Alex Wied
1af5d798a4 libstore/globals.cc: Automatically set cores based on cgroup CPU limit
By default, Nix sets the "cores" setting to the number of CPUs which are
physically present on the machine. If cgroups are used to limit the CPU
and memory consumption of a large Nix build, the OOM killer may be
invoked.

For example, consider a GitLab CI pipeline which builds a large software
package. The GitLab runner spawns a container whose CPU is limited to 4
cores and whose memory is limited to 16 GiB. If the underlying machine
has 64 cores, Nix will invoke the build with -j64. In many cases, that
level of parallelism will invoke the OOM killer and the build will
completely fail.

This change sets the default value of "cores" to be
ceil(cpu_quota / cpu_period), with a fallback to
std:🧵:hardware_concurrency() if cgroups v2 is not detected.
2022-07-19 16:03:58 -04:00
Théophane Hufschmitt
56f6f3725f Don't ultimately trust the signed paths
Like the old implem did (and like you'd want it to be anyways)
2022-07-19 19:46:00 +02:00
Adam Joseph
36e1383b6b local-derivation-goal.cc: save global errno to the stack before performing tests which might clobber it 2022-07-19 03:53:20 -07:00
Adam Joseph
99fcc91f67 as requested by @thufschmitt https://github.com/NixOS/nix/pull/6814#discussion_r924275777 2022-07-19 03:33:12 -07:00
Adam Joseph
5f51539f88 change warn() to notice() 2022-07-19 03:30:52 -07:00
Adam Joseph
c8c6203c2c local-derivation-goal.cc: detect unprivileged_userns_clone failure mode
The workaround for "Some distros patch Linux" mentioned in
local-derivation-goal.cc will not help in the `--option
sandbox-fallback false` case.  To provide the user more helpful
guidance on how to get the sandbox working, let's check to see if the
`/proc` node created by the aforementioned patch is present and
configured in a way that will cause us problems.  If so, give the user
a suggestion for how to troubleshoot the problem.
2022-07-17 01:27:22 -07:00
Adam Joseph
6fc56318bf local-derivation-goal.cc: add comment re: CLONE_NEWUSER
local-derivation-goal.cc contains a comment stating that "Some distros
patch Linux to not allow unprivileged user namespaces."  Let's give a
pointer to a common version of this patch for those who want more
details about this failure mode.
2022-07-17 01:23:32 -07:00
Adam Joseph
8d35f387dc local-derivation-goal.cc: warn if failing and /proc/self/ns/user missing
This commit causes nix to `warn()` if sandbox setup has failed and
`/proc/self/ns/user` does not exist.  This is usually a sign that the
kernel was compiled without `CONFIG_USER_NS=y`, which is required for
sandboxing.
2022-07-16 19:37:27 -07:00
Adam Joseph
90830b1074 local-derivation-goal.cc: warn if failing due to max_user_namespaces==0
This commit uses `warn()` to notify the user if sandbox setup fails
with errno==EPERM and /proc/sys/user/max_user_namespaces is missing or
zero, since that is at least part of the reason why sandbox setup
failed.

Note that `echo -n 0 > /proc/sys/user/max_user_namespaces` or
equivalent at boot time has been the recommended mitigation for
several Linux LPE vulnerabilities over the past few years.  Many users
have applied this mitigation and then forgotten that they have done
so.
2022-07-16 19:30:53 -07:00
Adam Joseph
8ea3a911aa local-derivation-goal.cc: improve error messages when sandboxing fails
The failure modes for nix's sandboxing setup are pretty complicated.
When nix is unable to set up the sandbox, let's provide more detail
about what went wrong.  Specifically:

* Make sure the error message includes the word "sandbox" so the user
  knows that the failure was related to sandboxing.

* If `--option sandbox-fallback false` was provided, and removing it
  would have allowed further attempts to make progress, let the user
  know.
2022-07-16 14:56:24 -07:00
Alex Wied
b88fb50e21 fix(libstore): allow Nix to access all Rosetta 2 paths on MacOS
Fixes: #5884
2022-07-15 12:10:56 -07:00
Eelco Dolstra
3bcd7a5474 Disable auto-chroot if $NIX_STATE_DIR is set
Issue #6732.
2022-07-15 12:32:29 +02:00
John Ericson
8735f55dec Fix bug, test more, document more 2022-07-14 20:23:43 -04:00
John Ericson
6cafe308c9 Merge remote-tracking branch 'upstream/master' into indexed-store-path-outputs 2022-07-14 16:15:37 -04:00
Eelco Dolstra
ff49c75502 Disable auto-chroot if $NIX_STORE_DIR is set
Fixes #6732.
2022-07-14 17:47:09 +02:00
Eelco Dolstra
6cab528461 Don't fail if we can't create ~/.local/share/nix/root
https://hydra.nixos.org/build/182135943
2022-06-29 12:16:51 +02:00
Théophane Hufschmitt
56cf96a1b9
Merge pull request #6706 from lheckemann/cache-info-cache-invalidation
nar-info-disk-cache: refresh nix-cache-info weekly
2022-06-29 07:56:27 +02:00
Eelco Dolstra
586fa707fc
Merge pull request #6714 from edolstra/auto-chroot-store
Automatically use a chroot store if /nix doesn't exist
2022-06-25 00:03:35 +02:00
Eelco Dolstra
30d4aa5dd6 Only do the auto chroot store on Linux 2022-06-24 23:35:21 +02:00
Linus Heckemann
8cf26385cd [fixup] handle cache expiration in sqlite query 2022-06-23 14:54:25 -04:00
Cole Helbling
561a258f1d libstore/nar-info: drop unused system field
This was unused everywhere (and even the official NixOS binary cache
did not produce .narinfo files containing a "System:" field).
2022-06-23 14:25:10 -04:00
Eelco Dolstra
1cb376d60e
Fix typo
Co-authored-by: Cole Helbling <cole.e.helbling@outlook.com>
2022-06-23 17:18:22 +02:00
Eelco Dolstra
2a9fddc0b1 Automatically use a chroot store if /nix doesn't exist
Specifically, if we're not root and the daemon socket does not exist,
then we use ~/.local/share/nix/root as a chroot store. This enables
non-root users to download nix-static and have it work out of the box,
e.g.

  ubuntu@ip-10-13-1-146:~$ ~/nix run nixpkgs#hello
  warning: '/nix' does not exists, so Nix will use '/home/ubuntu/.local/share/nix/root' as a chroot store
  Hello, world!
2022-06-23 16:29:50 +02:00
Eelco Dolstra
3c57db1a0f
Merge pull request #6710 from edolstra/embedded-sandbox-shell
Embed the sandbox shell into the statically linked 'nix' binary
2022-06-23 15:34:16 +02:00
Eelco Dolstra
0b2ea0023c Fix typo 2022-06-23 14:22:11 +02:00
Théophane Hufschmitt
027f6a735f
Merge pull request #6673 from asymmetric/warn
libstore: improve warning message on missing sig
2022-06-23 06:42:48 +02:00
Eelco Dolstra
925b975224 Embed the sandbox shell into the statically linked 'nix' binary
With this, Nix will write a copy of the sandbox shell to /bin/sh in
the sandbox rather than bind-mounting it from the host filesystem.
This makes /bin/sh work out of the box with nix-static, i.e. you no
longer get

  /nix/store/qa36xhc5gpf42l3z1a8m1lysi40l9p7s-bootstrap-stage4-stdenv-linux/setup: ./configure: /bin/sh: bad interpreter: No such file or directory
2022-06-23 04:08:28 +02:00
Eelco Dolstra
184f4e40de Remove NIX_LIBEXEC_DIR 2022-06-23 01:32:46 +02:00
Eelco Dolstra
d3176ce076 Fix build-remote in nix-static
'build-remote' is now executed via /proc/self/exe so it always works.
2022-06-23 01:32:46 +02:00
Linus Heckemann
d533a88546 nar-info-disk-cache: refresh nix-cache-info weekly
This allows changes to nix-cache-info to be picked up by existing
clients. Previously, the only way for this to happen would be for
clients to delete binary-cache-v6.sqlite, which is quite awkward for
users.

On the other hand, updates to nix-cache-info should be pretty rare,
hence the choice of a fairly long TTL. Configurability is probably not
useful enough to warrant implementing it.
2022-06-22 10:49:18 -04:00
Lorenzo Manacorda
475249db8a libstore: improve warning message on missing sig
Clarifies that the substitute will be ignored/skipped.
2022-06-15 17:34:28 +02:00
Eelco Dolstra
9f58df4c91
Merge pull request #6619 from Jonpez2/patch-1
Add security.csm to ignored-acls
2022-06-13 16:23:13 +02:00
Eelco Dolstra
2fef24f528
Merge pull request #6634 from lovesegfault/fix-getgrouplist
fix(libstore/lock): support users that belong to more than 10 groups
2022-06-13 15:45:09 +02:00
Anders Kaseorg
754cd53faf Add missing rethrows in conditional exception handlers
Signed-off-by: Anders Kaseorg <andersk@mit.edu>
2022-06-10 10:52:41 -07:00
Bernardo Meurer
931930feb1 fix(libstore/lock): support users that belong to more than 10 groups
The manpage for `getgrouplist` says:

> If the number of groups of which user is a member is less than or
> equal to *ngroups, then the value *ngroups is returned.
>
> If the user is a member of more than *ngroups groups, then
> getgrouplist() returns -1.  In this case, the value returned in
> *ngroups can be used to resize the buffer passed to a further
> call getgrouplist().

In our original code, however, we allocated a list of size `10` and, if
`getgrouplist` returned `-1` threw an exception. In practice, this
caused the code to fail for any user belonging to more than 10 groups.

While unusual for single-user systems, large companies commonly have a
huge number of POSIX groups users belong to, causing this issue to crop
up and make multi-user Nix unusable in such settings.

The fix is relatively simple, when `getgrouplist` fails, it stores the
real number of GIDs in `ngroups`, so we must resize our list and retry.
Only then, if it errors once more, we can raise an exception.

This should be backported to, at least, 2.9.x.
2022-06-08 13:45:41 -04:00
Théophane Hufschmitt
480c2b6699 Rewrite the CA paths when moving them between store
Bring back the possibility to copy CA paths with no reference (like the
outputs of FO derivations or stuff imported at eval time) between stores
that have a different prefix.
2022-06-08 15:13:11 +02:00
Théophane Hufschmitt
cb0553ecd0 Restore the "low-latency" ssh copying 2022-06-08 14:03:46 +02:00
Jonpez2
a7d25d339d
Add security.csm to the default ignore list 2022-06-08 09:32:14 +01:00
Théophane Hufschmitt
95f47c28fb Make nix copy parallel again
FILLME
2022-06-03 17:01:16 +02:00
Eelco Dolstra
2097c30b08
Merge pull request #6600 from asymmetric/hash-comment
schema.sql: add comment about hash being in base16
2022-06-03 08:51:07 +02:00
John Ericson
b585548dfe Merge remote-tracking branch 'upstream/master' into indexed-store-path-outputs 2022-06-02 19:53:11 +00:00
Théophane Hufschmitt
a5f7b934bd
Merge branch 'master' into lto 2022-06-01 17:55:03 +02:00
Lorenzo Manacorda
a9358a6097 schema.sql: add comment about hash being in base16 2022-06-01 14:59:57 +02:00
Eelco Dolstra
6378f0bb32
RemoteStore::queryRealisationUncached(): Fix potential noexcept violation 2022-05-30 13:27:13 +02:00
Eelco Dolstra
b8faa83742
HttpBinaryCacheStore::getFile(): Don't throw an exception
This violates the noexcept specification.

Fixes #6445.
2022-05-30 13:24:04 +02:00
pennae
b092afe77d
Merge branch 'master' into lto 2022-05-25 11:55:13 +00:00
Eli Kogan-Wang
e53349dd6e change priority conflict message 2022-05-16 16:16:06 +02:00
Eli Kogan-Wang
be2b19041e Integrate review changes 2022-05-13 22:02:28 +02:00
John Ericson
49ad315c03 Use ^ not ! in indexed store derivations installable syntax
Match the other syntax that was recently added
2022-05-12 20:10:02 +00:00
Eli Kogan-Wang
aefc6c4f41 Add priority for nix profile install 2022-05-11 12:16:35 +02:00
Eelco Dolstra
107613ad2b Fix compiler warning 2022-05-04 11:31:39 +02:00
Eelco Dolstra
3e87c8e62b Move json stuff out of util.cc 2022-05-04 11:22:06 +02:00
Alain Zscheile
1385b20078
Get rid of most .at calls (#6393)
Use one of `get` or `getOr` instead which will either return a null-pointer (with a nicer error message) or a default value when the key is missing.
2022-05-04 07:44:32 +02:00
Eelco Dolstra
a3c6c5b1c7 nix profile: Support overriding outputs 2022-05-03 15:00:34 +02:00
Eelco Dolstra
4a79cba511 Allow selecting derivation outputs using 'installable!outputs'
E.g. 'nixpkgs#glibc^dev,static' or 'nixpkgs#glibc^*'.
2022-05-03 13:43:52 +02:00
Eelco Dolstra
70a30dbc00 Fix libcxx build
Fixes #6458.
2022-04-28 14:37:05 +02:00
Eelco Dolstra
4a9623b129 Fix passing $OUT_PATHS to the post-build hook
Fixes #6446.
2022-04-28 13:36:01 +02:00
Adam Joseph
49119072e7 local-derivation-goal.cc: seccomp filters for MIPS secondary arch/abi
A mips64el Linux MIPS kernel can execute userspace code using any of
three ABIs:

  mips64el-linux-*abin64
  mips64el-linux-*abin32
    mipsel-linux-*

The first of these is the native 64-bit ABI, and the only ABI with
64-bit pointers; this is sometimes called "n64".  The last of these is
the old legacy 32-bit ABI, whose binaries can execute natively on
32-bit MIPS hardware; this is sometimes called "o32".

The second ABI, "n32" is essentially the 64-bit ABI with 32-bit
pointers and address space.  Hardware 64-bit integer/floating
arithmetic is still allowed, as well as the much larger mips64
register set and more-efficient calling convention.

Let's enable seccomp filters for all of these.  Likewise for big
endian (mips64-linux-*).
2022-04-27 21:39:26 -07:00
pennae
d6d6bbd9ef
Merge branch 'master' into lto 2022-04-25 14:02:37 +00:00
Eelco Dolstra
ebad9213f7
Merge pull request #6431 from NixOS/unbreak-my-build
Make the default SQLiteError constructor public
2022-04-21 10:41:07 +02:00
Sergei Trofimovich
975b0b52e7 ca: add sqlite index on RealisationsRefs(realisationReference)
Without the change any CA deletion triggers linear scan on large
RealisationsRefs table:

    sqlite>.eqp full
    sqlite> delete from RealisationsRefs where realisationReference IN ( select id from Realisations where outputPath = 1234567890 );
    QUERY PLAN
    |--SCAN RealisationsRefs
    `--LIST SUBQUERY 1
       `--SEARCH Realisations USING COVERING INDEX IndexRealisationsRefsOnOutputPath (outputPath=?)

With the change it gets turned into a lookup:

    sqlite> CREATE INDEX IndexRealisationsRefsRealisationReference on RealisationsRefs(realisationReference);
    sqlite> delete from RealisationsRefs where realisationReference IN ( select id from Realisations where outputPath = 1234567890 );
    QUERY PLAN
    |--SEARCH RealisationsRefs USING INDEX IndexRealisationsRefsRealisationReference (realisationReference=?)
    `--LIST SUBQUERY 1
       `--SEARCH Realisations USING COVERING INDEX IndexRealisationsRefsOnOutputPath (outputPath=?)
2022-04-21 10:06:39 +02:00
regnat
86d7a11c6b Make sure to delete all the realisation refs
Deleting just one will only work in the test cases where I didn’t bother
creating too many of them :p
2022-04-21 10:06:39 +02:00
regnat
92656da0b9 Fix the gc with indirect self-references via the realisations
If the derivation `foo` depends on `bar`, and they both have the same
output path (because they are CA derivations), then this output path
will depend both on the realisation of `foo` and of `bar`, which
themselves depend on each other.
This confuses SQLite which isn’t able to automatically solve this
diamond dependency scheme.

Help it by adding a trigger to delete all the references between the
relevant realisations.

Fix #5320
2022-04-21 10:06:39 +02:00
Théophane Hufschmitt
e7d79c7861 Make the default SQLiteError constructor public
Otherwise the clang builds fail because the constructor of `SQLiteBusy`
inherits it, `SQLiteError::_throw` tries to call it, which fails.

Strangely, gcc works fine with it. Not sure what the correct behavior is
and who is buggy here, but either way, making it public is at the worst
a reasonable workaround
2022-04-21 09:40:55 +02:00
John Ericson
f63b0f4540 Actually, solve this in a lighter-weight way
The templating is very superficial
2022-04-20 17:37:59 +00:00
John Ericson
05ec0beb40 Move templated functions to sqlite-impl.hh
This ensures that use-sites properly trigger new monomorphisations on
one hand, and on the other hand keeps the main `sqlite.hh` clean and
interface-only. I think that is good practice in general, but in this
situation in particular we do indeed have `sqlite.hh` users that don't
need the `throw_` function.
2022-04-20 16:57:06 +00:00
John Ericson
3c220442ff Merge remote-tracking branch 'upstream/master' into fix-url-format 2022-04-20 16:53:16 +00:00
John Ericson
08b8657978 Merge branch 'path-info' into ca-drv-exotic 2022-04-19 22:39:57 +00:00
John Ericson
55caef36ed Merge remote-tracking branch 'upstream/master' into path-info 2022-04-19 22:27:21 +00:00
John Ericson
13c669105c Slight cleanups 2022-04-19 22:25:21 +00:00
John Ericson
8abb627002 Merge branch 'path-info' into ca-drv-exotic 2022-04-19 22:02:33 +00:00
John Ericson
75b62e5260 Avoid fmt when constructor already does it
There is a correctnes issue here, but #3724 will fix that. This is just
a cleanup for brevity's sake.
2022-04-19 01:44:11 +00:00
Alex Ameen
e5c934cd48
doc: rephrase connect-timeout help message
Co-authored-by: Cole Helbling <cole.e.helbling@outlook.com>
2022-04-17 18:17:37 -05:00
Alex Ameen
25c85f5a0e
doc: document nix.conf connect-timeout default 2022-04-17 17:14:38 -05:00
Sebastian Blunt
63d9a81819 Log builder args and environment variables
Previously it only logged the builder's path, this changes it to log the
arguments at the same log level, and the environment variables at the
vomit level.

This helped me debug https://github.com/svanderburg/node2nix/issues/75
2022-04-10 21:10:37 -07:00
Eelco Dolstra
c68963eaea Remove duplicate "error:" 2022-04-08 11:48:30 +02:00
Eelco Dolstra
8bd9ebf52c Error: Remove unused sname() method 2022-04-08 11:31:51 +02:00
Eelco Dolstra
168ef9f3ab Remove unused Error.name field 2022-04-08 11:31:51 +02:00
Eelco Dolstra
318936366d Fix empty 'nix copy' error message
This was caused by SubstitutionGoal not setting the errorMsg field in
its BuildResult. We now get a more descriptive message than in 2.7.0, e.g.

  error: path '/nix/store/13mh...' is required, but there is no substituter that can build it

instead of the misleading (since there was no build)

  error: build of '/nix/store/13mh...' failed

Fixes #6295.
2022-04-06 12:43:53 +02:00
Eelco Dolstra
a4a1de69dc Add missing #include 2022-04-04 16:49:39 +02:00
Eelco Dolstra
a99af85a77 Fix macOS build 2022-03-31 16:39:18 +02:00
Eelco Dolstra
6051cc954b Rename 'pure' -> 'sandboxed' for consistency 2022-03-31 16:12:25 +02:00
Eelco Dolstra
e279fbb16a needsNetworkAccess() -> isSandboxed() 2022-03-31 16:06:40 +02:00
Eelco Dolstra
4e043c2f32 Document isPure() 2022-03-31 16:01:50 +02:00
Eelco Dolstra
d7fc33c842 Fix macOS build 2022-03-31 15:59:14 +02:00
Eelco Dolstra
18935e8b9f Support fixed-output derivations depending on impure derivations 2022-03-31 13:43:20 +02:00
Eelco Dolstra
5cd72598fe Add support for impure derivations
Impure derivations are derivations that can produce a different result
every time they're built. Example:

  stdenv.mkDerivation {
    name = "impure";
    __impure = true; # marks this derivation as impure
    outputHashAlgo = "sha256";
    outputHashMode = "recursive";
    buildCommand = "date > $out";
  };

Some important characteristics:

* This requires the 'impure-derivations' experimental feature.

* Impure derivations are not "cached". Thus, running "nix-build" on
  the example above multiple times will cause a rebuild every time.

* They are implemented similar to CA derivations, i.e. the output is
  moved to a content-addressed path in the store. The difference is
  that we don't register a realisation in the Nix database.

* Pure derivations are not allowed to depend on impure derivations. In
  the future fixed-output derivations will be allowed to depend on
  impure derivations, thus forming an "impurity barrier" in the
  dependency graph.

* When sandboxing is enabled, impure derivations can access the
  network in the same way as fixed-output derivations. In relaxed
  sandboxing mode, they can access the local filesystem.
2022-03-31 13:43:20 +02:00
Théophane Hufschmitt
390269ed87 Simplify the handling of the hash modulo
Rather than having four different but very similar types of hashes, make
only one, with a tag indicating whether it corresponds to a regular of
deferred derivation.

This implies a slight logical change: The original Nix+multiple-outputs
model assumed only one hash-modulo per derivation. Adding
multiple-outputs CA derivations changed this as these have one
hash-modulo per output. This change is now treating each derivation as
having one hash modulo per output.
This obviously means that we internally loose the guaranty that
all the outputs of input-addressed derivations have the same hash
modulo. But it turns out that it doesn’t matter because there’s nothing
in the code taking advantage of that fact (and it probably shouldn’t
anyways).

The upside is that it is now much easier to work with these hashes, and
we can get rid of a lot of useless `std::visit{ overloaded`.

Co-authored-by: John Ericson <John.Ericson@Obsidian.Systems>
2022-03-29 18:17:35 +02:00
Eelco Dolstra
057f9ee190 nix profile install: Don't use queryDerivationOutputMap()
Instead get the outputs from Installable::build(). This will also
allow 'nix profile install' to support impure derivations.

Fixes #6286.
2022-03-28 14:23:39 +02:00
John Ericson
2c21cb6720 Fill in missing comparison operators for content addresses 2022-03-25 22:40:40 +00:00
John Ericson
ff2a8ccfe1 Merge branch 'path-info' into ca-drv-exotic 2022-03-25 19:40:52 +00:00
John Ericson
0dc2974930 Merge remote-tracking branch 'upstream/master' into path-info 2022-03-25 19:25:08 +00:00
Eelco Dolstra
50c229ad9a
Use wantOutput
Co-authored-by: John Ericson <git@JohnEricson.me>
2022-03-25 08:02:49 +01:00
Eelco Dolstra
540d7e33d8 Retry substitution after an incomplete closure only once
This avoids an infinite loop in the final test in
tests/binary-cache.sh. I think this was only not triggered previously
by accident (because we were clearing wantedOutputs in between).
2022-03-24 23:25:12 +01:00
Eelco Dolstra
fe5509df9a Only return wanted outputs 2022-03-24 23:24:48 +01:00
Eelco Dolstra
09796c0263 Random cleanup 2022-03-24 23:24:10 +01:00
Eelco Dolstra
175c78591b Random cleanup 2022-03-24 23:09:43 +01:00
Eelco Dolstra
28186b7044 Add a test for fetchClosure and 'nix store make-content-addressed' 2022-03-24 21:33:33 +01:00
Eelco Dolstra
f18607549c Fix makeContentAddressed() on self-references
LocalStore::addToStore() since
79ae9e4558 expects a regular NAR hash,
rather than a NAR hash modulo self-references. Fixes #6300.

Also, makeContentAddressed() now rewrites the entire closure (so 'nix
store make-content-addressable' no longer needs '-r'). See #6301.
2022-03-24 21:33:33 +01:00
Eelco Dolstra
545c2d0d8c fetchClosure: Allow a path to be rewritten to CA on the fly
The advantage is that the resulting closure doesn't need to be signed,
so you don't need to configure any binary cache keys on the client.
2022-03-24 21:33:33 +01:00
Eelco Dolstra
0b42afe027 buildProfile(): Ignore manifest.{nix,json}
If a package installs a file named manifest.json, it caused nix-env to
consider the profile a new-style profile created by 'nix
profile'. Fixes #6032.
2022-03-22 10:48:02 +01:00
John Ericson
a544ed7684 Generalize DerivationType in preparation for impure derivations 2022-03-18 14:59:56 +00:00
John Ericson
197feed51d Clean up DerivationOutput, and headers
1. `DerivationOutput` now as the `std::variant` as a base class. And the
   variants are given hierarchical names under `DerivationOutput`.

   In 8e0d0689be @matthewbauer and I
   didn't know a better idiom, and so we made it a field. But this sort
   of "newtype" is anoying for literals downstream.

   Since then we leaned the base class, inherit the constructors trick,
   e.g. used in `DerivedPath`. Switching to use that makes this more
   ergonomic, and consistent.

2. `store-api.hh` and `derivations.hh` are now independent.

   In bcde5456cc I swapped the dependency,
   but I now know it is better to just keep on using incomplete types as
   much as possible for faster compilation and good separation of
   concerns.
2022-03-17 22:35:53 +00:00
Eelco Dolstra
6afc361798
Merge pull request #6277 from thufschmitt/ca/nix-build-dry-run
Fix `nix build --dry-run` with CA derivations
2022-03-17 22:23:15 +01:00
Sergei Trofimovich
d58453f72e gc: don't visit implicit referrers on garbage collection
Before the change garbage collector was not considering
`.drv` and outputs as alive even if configuration says otherwise.
As a result `nix store gc --dry-run` could visit (and parse)
`.drv` files multiple times (worst case it's quadratic).

It happens because `alive` set was populating only runtime closure
without regard for actual configuration. The change fixes it.

Benchmark: my system has about 139MB, 40K `.drv` files.

Performance before the change:

    $ time nix store gc --dry-run
    real    4m22,148s

Performance after the change:

    $ time nix store gc --dry-run
    real    0m14,178s
2022-03-17 18:47:29 +00:00
Théophane Hufschmitt
3fc4c612fb Fix nix build --dry-run with CA derivations
Don’t try and assume that we know the output paths when we’ve just built
with `--dry-run`. Instead make `--dry-run` follow a different code path
that won’t assume the knowledge of the output paths at all.

Fix #6275
2022-03-17 11:55:19 +01:00
Eelco Dolstra
a53c1dc96d
Merge pull request #6245 from trofi/fix-nix-store-gc-limit-auto-optimise-store
nix store gc: account for auto-optimised store
2022-03-16 09:19:57 +01:00
Théophane Hufschmitt
516a7ac4de
Merge pull request #6229 from obsidiansystems/refactor-hash-modulo
Overhaul derivation hash modulo somewhat
2022-03-15 21:23:44 +01:00
Sergei Trofimovich
6b1872312f nix store gc: account for auto-optimised store
Before the change on a system with `auto-optimise-store = true`:

    $ nix store gc --verbose --max 1

deleted all the paths instead of one path (we requested 1 byte limit).

It happens because every file in `auto-optimise-store = true` has at
least 2 links: file itself and a link in /nix/store/.links/ directory.

The change conservatively assumes that any file that has one (as before)
or two links (assume auto-potimise mode) will free space.

Co-authored-by: Sandro <sandro.jaeckel@gmail.com>
2022-03-13 07:24:48 +00:00
John Ericson
0948b8e94d Reduce variants for derivation hash modulo
This changes was taken from dynamic derivation (#4628). It` somewhat
undoes the refactors I first did for floating CA derivations, as the
benefit of hindsight + requirements of dynamic derivations made me
reconsider some things.

They aren't to consequential, but I figured they might be good to land
first, before the more profound changes @thufschmitt has in the works.
2022-03-11 21:20:37 +00:00
John Ericson
a03b1fd7f6 Deduplicate the Store downcasting with a template 2022-03-11 13:32:33 +00:00
John Ericson
678d1c2aa0 Factor out a LogStore interface
Continue progress on #5729.

Just as I hoped, this uncovered an issue: the daemon protocol is missing
a way to query build logs. This doesn't effect `unix://`, but does
effect `ssh://`. A FIXME is left for this, so we come back to it later.
2022-03-11 13:32:16 +00:00
John Ericson
89effe9d4a GcStore::resolve should print the URI 2022-03-11 13:27:38 +00:00
John Ericson
073e134de6 Rename requireGcStore to GcStore::require
I should have done this to begin with. This will be nicer once more
Store sub-interfaces exist too, to illustrate the pattern.
2022-03-11 13:27:38 +00:00
John Ericson
938650700f Merge branch 'path-info' into ca-drv-exotic 2022-03-10 16:20:01 +00:00
John Ericson
8ba089597f Merge remote-tracking branch 'upstream/master' into path-info 2022-03-10 15:48:14 +00:00
pennae
f2603e9c92
Merge branch 'master' into lto 2022-03-10 00:32:34 +00:00
Eelco Dolstra
4d98143914 BuildResult: Remove unused drvPath field 2022-03-09 20:31:50 +01:00
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
regnat
417aaf4ff7 Correctly hijack the file:// uri scheme with _NIX_FORCE_HTTP
Setting the `_NIX_FORCE_HTTP` environment variable is supposed to force `file://` store urls to use the `HttpBinaryCacheStore` implementation rather than the `LocalBinaryCacheStore` one (very useful for testing).
However because of a name mismatch, the `LocalBinaryCacheStore` was still registering the `file` scheme when this variable was set, meaning that the actual store implementation picked up on `file://` uris was dependent on the registration order of the stores (itself dependent on the link order of the object files).

Fix this by making the `LocalBinaryCacheStore` gracefully not register the `file` uri scheme when the variable is set.
2022-03-03 17:47:50 +01:00
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
John Ericson
dc92b01885 Merge remote-tracking branch 'upstream/master' into auto-uid-allocation 2022-02-28 23:54:20 +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
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