Commit graph

2065 commits

Author SHA1 Message Date
Eelco Dolstra 9cc8047f44
Reimplement connect-timeout
Fixes #1339.
2017-04-19 14:54:52 +02:00
Eelco Dolstra f8a2e8a552
Shut up some warnings 2017-04-14 14:42:20 +02:00
Eelco Dolstra dd3714f6ef
Doh 2017-04-14 14:42:08 +02:00
Eelco Dolstra ba9ad29fdb
Convert Settings to the new config system
This makes all config options self-documenting.

Unknown or unparseable config settings and --option flags now cause a
warning.
2017-04-13 20:53:23 +02:00
Eelco Dolstra 1860070548
Merge branch 'rework-options' of https://github.com/copumpkin/nix 2017-04-13 16:15:51 +02:00
Eelco Dolstra 2040240e23
Add a Config class to simplify adding configuration settings
The typical use is to inherit Config and add Setting<T> members:

  class MyClass : private Config
  {
    Setting<int> foo{this, 123, "foo", "the number of foos to use"};
    Setting<std::string> bar{this, "blabla", "bar", "the name of the bar"};

    MyClass() : Config(readConfigFile("/etc/my-app.conf"))
    {
      std::cout << foo << "\n"; // will print 123 unless overriden
    }
  };

Currently, this is used by Store and its subclasses for store
parameters. You now get a warning if you specify a non-existant store
parameter in a store URI.
2017-04-13 16:03:31 +02:00
Eelco Dolstra 1fe1976e0d Merge pull request #1316 from copumpkin/nix-retries-default
Default to 5 download retries
2017-04-10 15:58:57 +02:00
Dan Peebles d1fdade755 Add CURLE_WRITE_ERROR as a transient error condition
We've observed it failing downloads in the wild and retrying the same URL
a few moments later seemed to fix it.
2017-04-10 09:28:44 -04:00
Dan Peebles e43e8be8e7 Default to 5 download retries
This should help certain downloaders that don't request anything special
for the number of retries, like nix-channel.
2017-04-10 09:22:24 -04:00
Eelco Dolstra 105f8ffc98
Minor cleanup
Also, possible fix for #1310 on 32-bit systems.
2017-04-10 11:27:33 +02:00
Eelco Dolstra 95295482ea
Allow "auto" as a store URI
Using the empty string is likely to be ambiguous in some contexts.
2017-04-10 11:27:29 +02:00
Dan Peebles 98283915f5 Retry downloads on transient SSL errors too 2017-04-06 18:18:43 +00:00
Eelco Dolstra ba20730b3f
Implement RemoteStore::queryMissing()
This provides a significant speedup, e.g. 64 s -> 12 s for

  nix-build --dry-run -I nixpkgs=channel:nixos-16.03 '<nixpkgs/nixos/tests/misc.nix>' -A test

on a cold local and CloudFront cache.

The alternative is to use lots of concurrent daemon connections but
that seems wasteful.
2017-04-06 18:40:19 +02:00
Eelco Dolstra 6b5e271163
Add a method to allow hydra-queue-runner to flush the path info cache 2017-04-06 15:22:37 +02:00
Eelco Dolstra 256940fc48
nix-daemon: Disable path info cache
This is useless because the client also caches path info, and can
cause problems for long-running clients like hydra-queue-runner
(i.e. it may return cached info about paths that have been
garbage-collected).
2017-04-06 14:30:31 +02:00
Eelco Dolstra 8decb07c31
Allow default sandbox paths to be overriden
E.g. you can now redirect /etc/resolv.conf to a different file.
2017-04-04 17:54:16 +02:00
Eelco Dolstra 488792a87d
Make /var/run/nscd/socket optional
Not every distribution uses nscd.
2017-04-04 17:40:50 +02:00
Eelco Dolstra 29d35805c6
Sandbox: Fix /dev/ptmx on recent kernels
This fixes "No such file or directory" when opening /dev/ptmx
(e.g. http://hydra.nixos.org/build/51094249).

The reason appears to be some changes to /dev/ptmx / /dev/pts handling
between Linux 4.4 and 4.9. See
https://patchwork.kernel.org/patch/7832531/.

The fix is to go back to mounting a proper /dev/pts instance inside
the sandbox. Happily, this now works inside user namespaces, even for
unprivileged users. So

  NIX_REMOTE=local?root=/tmp/nix nix-build \
    '<nixpkgs/nixos/tests/misc.nix>' -A test

works for non-root users.

The downside is that the fix breaks sandbox builds on older kernels
(probably pre-4.6), since mounting a devpts fails inside user
namespaces for some reason I've never been able to figure out. Builds
on those systems will fail with

  error: while setting up the build environment: mounting /dev/pts: Invalid argument

Ah well.
2017-03-31 18:20:19 +02:00
Shea Levy d299bd710a Merge branch 'builtins.exec' 2017-03-31 11:22:39 -04:00
Eelco Dolstra e1509adbbb
Retry curl error 16 2017-03-31 15:50:11 +02:00
Shea Levy 0bb8db257d Add exec primop behind allow-unsafe-native-code-during-evaluation.
Execute a given program with the (optional) given arguments as the
user running the evaluation, parsing stdout as an expression to be
evaluated.

There are many use cases for nix that would benefit from being able to
run arbitrary code during evaluation, including but not limited to:

* Automatic git fetching to get a sha256 from a git revision
* git rev-parse HEAD
* Automatic extraction of information from build specifications from
  other tools, particularly language-specific package managers like
  cabal or npm
* Secrets decryption (e.g. with nixops)
* Private repository fetching

Ideally, we would add this functionality in a more principled way to
nix, but in the mean time 'builtins.exec' can be used to get these
tasks done.

The primop is only available when the
'allow-unsafe-native-code-during-evaluation' nix option is true. That
flag also enables the 'importNative' primop, which is strictly more
powerful but less convenient (since it requires compiling a plugin
against the running version of nix).
2017-03-30 08:04:21 -04:00
Eelco Dolstra c60715e937
Ignore broken "Deriver: unknown-deriver" fields in .narinfo
These were generated by a legacy tool.
2017-03-28 13:08:13 +02:00
Eelco Dolstra 895a74a814
LocalFSStore::getBuildLog(): Handle corrupted logs 2017-03-21 19:23:35 +01:00
Eelco Dolstra e1e49c58e1
Only use cache.nixos.org when the store is /nix/store
This is consistent with the behaviour of the old
download-from-binary-cache substituter.
2017-03-21 17:59:18 +01:00
Eelco Dolstra ecbc3fedd3
Require signatures by default
This corresponds to the NixOS default.
2017-03-21 15:10:48 +01:00
Eelco Dolstra 4bb38591e5
Restore cache.nixos.org as the default substituter
Fixes #1283.
2017-03-21 15:06:46 +01:00
Eelco Dolstra f8b84a3b8c
Move istringstream_nocopy to a separate file 2017-03-21 14:43:03 +01:00
Eelco Dolstra 3229f85585
Honor $NIX_SSHOPTS again
NixOps needs this.
2017-03-21 14:35:50 +01:00
Eelco Dolstra 20df50d8e1
Merge branch 'darwin-s3-binary-cache-store' of https://github.com/shlevy/nix 2017-03-20 17:46:35 +01:00
Eelco Dolstra 287084d688
ssh:// -> ssh-ng://, legacy-ssh:// -> ssh:// 2017-03-16 14:19:32 +01:00
Eelco Dolstra c5b83d8913
copyPaths(): Use queryValidPaths() to reduce SSH latency 2017-03-16 13:50:01 +01:00
Eelco Dolstra 91d67692cf
copyPaths(): Don't query path info for a path the target already has
For example, this cuts "nix-copy-closure --from" on a NixOS system
closure from 15.9s to 0.5s.
2017-03-16 12:05:51 +01:00
Eelco Dolstra ea7fa88131
LegacySSHStore: Provide a faster implementation of computeFSClosure()
This avoids the latency of the standard implementation, which can make
a huge difference (e.g. 16.5s -> 0.5s on a NixOS system closure).
2017-03-16 11:44:52 +01:00
Eelco Dolstra 7a716ef2a5
Fix nix-copy-closure --to 2017-03-16 10:58:48 +01:00
Eelco Dolstra 0ec7f47b00
Remove "killing process <pid>" messages
They convey no useful information.
2017-03-16 10:52:28 +01:00
Eelco Dolstra 3f35612c04
More precise compression settings 2017-03-15 17:20:19 +01:00
Eelco Dolstra 25dff2b7db
runProgram(): Distinguish between empty input and no input
For example, if we call brotli with an empty input, it shouldn't read
from the caller's stdin.
2017-03-15 16:50:19 +01:00
Eelco Dolstra 042975ea8e
Compress NAR listings using the "text-compression" method
So if "text-compression=br", the .ls file in S3 will get a
Content-Encoding of "br". Brotli appears to compress better than xz
for this kind of file and is natively supported by browsers.
2017-03-15 16:50:19 +01:00
Eelco Dolstra 45c70382ac
S3BinaryCacheStore: Set Content-Type
This is necessary for serving log files to browsers.
2017-03-15 16:50:19 +01:00
Eelco Dolstra 8b1d65bebe
S3BinaryCacheStore: Support compression of narinfo and log files
You can now set the store parameter "text-compression=br" to compress
textual files in the binary cache (i.e. narinfo and logs) using
Brotli. This sets the Content-Encoding header; the extension of
compressed files is unchanged.

You can separately specify the compression of log files using
"log-compression=br". This is useful when you don't want to compress
narinfo files for backward compatibility.
2017-03-15 16:49:28 +01:00
Eelco Dolstra e8186085e0
Add support for brotli compression
Build logs on cache.nixos.org are compressed using Brotli (since this
allows them to be decompressed automatically by Chrome and Firefox),
so it's handy if "nix log" can decompress them.
2017-03-15 16:49:06 +01:00
Eelco Dolstra 532d73d5d8
BinaryCacheStore: Implement getBuildLog()
We assume that build logs are stored under log/<drv>, e.g.

  /nix/store/q7ab198v13p0f8x8wgnd75dva7d5mip6-friday-devil-0.1.1.1.drv

maps to

  https://cache.nixos.org/log/q7ab198v13p0f8x8wgnd75dva7d5mip6-friday-devil-0.1.1.1.drv
2017-03-15 16:48:29 +01:00
Eelco Dolstra 0afeb7f51e
Store: Add a method for getting build logs
This allows various Store implementations to provide different ways to
get build logs. For example, BinaryCacheStore can get the build logs
from the binary cache.

Also, remove the log-servers option since we can use substituters for
this.
2017-03-15 16:48:29 +01:00
Shea Levy 96443e94a1 Merge branch 'configurable-aws-region' 2017-03-12 10:01:11 -04:00
Shea Levy 93f863be96 Add option to disable import-from-derivation completely, even if the drv is already realized 2017-03-08 08:46:12 -05:00
Shea Levy 3cc18d3753 Properly set the caFile for aws-sdk-cpp s3 2017-03-06 14:30:35 -05:00
Shea Levy 4fc30922cf istringstream_nocopy: Implement in a standards-compliant way.
Fixes the problem mentioned in e6a61b8da7

See #1135
2017-03-06 13:03:02 -05:00
Shea Levy 5789eaa3f4 Add aws-region param to S3 store URLs 2017-03-03 16:12:17 -05:00
Eelco Dolstra d1158bb816
Cache connection failures 2017-03-03 19:36:01 +01:00
Eelco Dolstra 8490ee37a6
SSHMaster: Make thread-safe 2017-03-03 19:28:27 +01:00
Eelco Dolstra d3eb1cf3bb
build-remote: Don't use a SSH master
This is unnecessary because we make only one connection.
2017-03-03 19:23:20 +01:00
Eelco Dolstra 577ebeaefb
Improve SSH handling
* Unify SSH code in SSHStore and LegacySSHStore.

* Fix a race starting the SSH master. We now wait synchronously for
  the SSH master to finish starting. This prevents the SSH clients
  from starting their own connections.

* Don't use a master if max-connections == 1.

* Add a "max-connections" store parameter.

* Add a "compress" store parameter.
2017-03-03 19:05:50 +01:00
Eelco Dolstra 2f992692e2
Fix fatal "broken pipe" error when $NIX_BUILD_HOOK is missing 2017-03-03 15:40:06 +01:00
Eelco Dolstra fa125b9b28
TeeSink: Pre-reserve string space
When receiving a very large file, this can prevent the string from
having tobe copied, which temporarily doubles memory consumption.
2017-03-01 16:16:04 +01:00
Eelco Dolstra f61f67ddee
RemoteStore::addToStore(): Send NAR rather than string containing NAR
This allows the NAR to be streamed in the future (though we're not
doing that yet).
2017-03-01 16:07:15 +01:00
Eelco Dolstra 07a0b8ca67
Tweak message 2017-03-01 14:52:16 +01:00
Eelco Dolstra c4a40949d9
Handle importing NARs containing files greater than 4 GiB
Also templatize readInt() to work for various integer types.
2017-03-01 13:52:54 +01:00
Eelco Dolstra 0780805246
Fix building against older curl versions
http://hydra.nixos.org/build/49490928
2017-02-28 14:03:43 +01:00
Eelco Dolstra fd86dd93dd
Improve SQLite busy handling 2017-02-28 13:59:11 +01:00
Eelco Dolstra 34b12bad59
NarInfoDiskCache: Handle SQLite busy errors 2017-02-28 13:44:11 +01:00
Eelco Dolstra 80027144ae
In SQLite errors, include the database path
This is necessary because we have multiple SQLite databases (e.g. the
binary cache cache).
2017-02-28 13:20:12 +01:00
Eelco Dolstra 7251d048fa
Support auto-configuration of build-max-jobs
"build-max-jobs" and the "-j" option can now be set to "auto" to use
the number of CPUs in the system. (Unlike build-cores, it doesn't use
0 to imply auto-configuration, because a) magic values are a bad idea
in general; b) 0 is a legitimate value used to disable local
building.)

Fixes #1198.
2017-02-28 12:54:50 +01:00
Eelco Dolstra 3fab1f04a7
_SC_NPROCESSORS_ONLN -> std:🧵:hardware_concurrency() 2017-02-27 16:01:54 +01:00
Eelco Dolstra 3cb0387d3f
Retry downloads on HTTP/2 stream errors
Issue #1254.
2017-02-27 14:36:09 +01:00
Eelco Dolstra e76df9bd52
Register content-addressability assertion for fixed outputs 2017-02-24 16:39:53 +01:00
Eelco Dolstra 1c718f80d3
Verify content-addressability assertions at registration time 2017-02-24 16:38:14 +01:00
Dan Peebles e7cb2847ab Explicitly model all settings and fail on unrecognized ones
Previously, the Settings class allowed other code to query for string
properties, which led to a proliferation of code all over the place making
up new options without any sort of central registry of valid options. This
commit pulls all those options back into the central Settings class and
removes the public get() methods, to discourage future abuses like that.

Furthermore, because we know the full set of options ahead of time, we
now fail loudly if someone enters an unrecognized option, thus preventing
subtle typos. With some template fun, we could probably also dump the full
set of options (with documentation, defaults, etc.) to the command line,
but I'm not doing that yet here.
2017-02-22 20:19:25 -05:00
Eelco Dolstra f023f64f40
RemoteStore::addToStore(): Pass content-addressability assertion
... and use this in Downloader::downloadCached(). This fixes

  $ nix-build https://nixos.org/channels/nixos-16.09-small/nixexprs.tar.xz -A hello
  error: cannot import path ‘/nix/store/csfbp1s60dkgmk9f8g0zk0mwb7hzgabd-nixexprs.tar.xz’ because it lacks a valid signature
2017-02-22 16:58:00 +01:00
Eelco Dolstra 8b1b5f9a12
Handle CURLE_RECV_ERROR as a transient error
This fixes

  unable to download ‘https://cache.nixos.org/nar/077h8ji74y9b0qx7rjk71xd80vjqp6q5gy137r553jlvdlxdcdlk.nar.xz’: HTTP error 200 (curl error: Failure when receiving data from the peer)
2017-02-21 16:04:47 +01:00
Eelco Dolstra 99bbddedb1
Fix building without S3 support
http://hydra.nixos.org/build/49031196/nixlog/2/raw
2017-02-21 13:15:07 +01:00
Eelco Dolstra df66d346df
Log AWS retries 2017-02-21 11:50:31 +01:00
Eelco Dolstra 302386f775
Support netrc in <nix/fetchurl.nix>
This allows <nix/fetchurl.nix> to fetch private Git/Mercurial
repositories, e.g.

  import <nix/fetchurl.nix> {
    url = https://edolstra@bitbucket.org/edolstra/my-private-repo/get/80a14018daed.tar.bz2;
    sha256 = "1mgqzn7biqkq3hf2697b0jc4wabkqhmzq2srdymjfa6sb9zb6qs7";
  }

where /etc/nix/netrc contains:

  machine bitbucket.org
  login edolstra
  password blabla...

This works even when sandboxing is enabled.

To do: add unpacking support (i.e. fetchzip functionality).
2017-02-16 15:51:50 +01:00
Eelco Dolstra cde4b60919
Move netrcFile to Settings
Also get rid of Settings::processEnvironment(), it appears to be
useless.
2017-02-16 14:50:41 +01:00
Eelco Dolstra 40f0e3b366
Include "curl" in the User-Agent header
Some sites (e.g. BitBucket) give a helpful 401 error when trying to
download a private archive if the User-Agent contains "curl", but give
a redirect to a login page otherwise (so for instance
"nix-prefetch-url" will succeed but produce useless output).
2017-02-16 13:55:43 +01:00
Eelco Dolstra d1139ff36b Merge pull request #1215 from k0001/netrc-1
Add netrc-file support
2017-02-16 12:45:44 +01:00
Eelco Dolstra 9ff9c3f2f8
Add support for s3:// URIs
This adds support for s3:// URIs in all places where Nix allows URIs,
e.g. in builtins.fetchurl, builtins.fetchTarball, <nix/fetchurl.nix>
and NIX_PATH. It allows fetching resources from private S3 buckets,
using credentials obtained from the standard places (i.e. AWS_*
environment variables, ~/.aws/credentials and the EC2 metadata
server). This may not be super-useful in general, but since we already
depend on aws-sdk-cpp, it's a cheap feature to add.
2017-02-14 14:20:00 +01:00
Renzo Carbonara e2257d4eeb Documentation. 2017-02-09 18:16:09 +01:00
Tuomas Tynkkynen 2cd468874f Include config.h implicitly with '-include config.h' in CFLAGS
Because config.h can #define things like _FILE_OFFSET_BITS=64 and not
every compilation unit includes config.h, we currently compile half of
Nix with _FILE_OFFSET_BITS=64 and other half with _FILE_OFFSET_BITS
unset. This causes major havoc with the Settings class on e.g. 32-bit ARM,
where different compilation units disagree with the struct layout.

E.g.:

diff --git a/src/libstore/globals.cc b/src/libstore/globals.cc
@@ -166,6 +166,8 @@ void Settings::update()
     _get(useSubstitutes, "build-use-substitutes");
+    fprintf(stderr, "at Settings::update(): &useSubstitutes = %p\n", &nix::settings.useSubstitutes);
     _get(buildUsersGroup, "build-users-group");
diff --git a/src/libstore/remote-store.cc b/src/libstore/remote-store.cc
+++ b/src/libstore/remote-store.cc
@@ -138,6 +138,8 @@ void RemoteStore::initConnection(Connection & conn)
 void RemoteStore::setOptions(Connection & conn)
 {
+    fprintf(stderr, "at RemoteStore::setOptions(): &useSubstitutes = %p\n", &nix::settings.useSubstitutes);
     conn.to << wopSetOptions

Gave me:

at Settings::update(): &useSubstitutes = 0xb6e5c5cb
at RemoteStore::setOptions(): &useSubstitutes = 0xb6e5c5c7

That was not a fun one to debug!
2017-02-08 21:51:02 +02:00
Eelco Dolstra 6f4682ad36
Merge branch 'nix-copy-closure-c++' of https://github.com/shlevy/nix 2017-02-07 20:47:45 +01:00
Eelco Dolstra caa5793b4a
Add a LegacySSHStore that uses nix-store --serve
This is useful for nix-copy-closure.
2017-02-07 19:29:21 +01:00
Eelco Dolstra f38224e924
copyStorePath(): Don't require signatures for "trusted" stores
For example, SSH stores could be trusted.
2017-02-07 19:29:21 +01:00
Eelco Dolstra fa07558a06
Provide default implementations for a couple of Store methods 2017-02-07 19:29:21 +01:00
Eelco Dolstra 7a58ad0ef5
SSHStore: uri -> host 2017-02-07 19:20:15 +01:00
Eelco Dolstra 612aeb2df5
Cleanup 2017-02-07 19:16:25 +01:00
Renzo Carbonara e6e74f987f Add netrc-file support 2017-02-02 13:24:20 +01:00
Eelco Dolstra 1351b0df87
exportReferencesGraph: Only export in JSON format when in structured mode
This prevents breaking compatibility with builders that read
"closure.*", since they would accidentally pick up the new JSON files.
2017-02-02 12:20:28 +01:00
Eelco Dolstra 7a65b2470e
Restore default signal handling in child processes
In particular, this fixes Ctrl-C in nix-shell sessions.
2017-02-01 13:00:21 +01:00
Eelco Dolstra cb1951e746
Periodically purge binary-cache.sqlite 2017-01-27 15:19:33 +01:00
Eelco Dolstra 211bc7f0e6
Implement TTL for binary cache lookups 2017-01-27 13:17:08 +01:00
Eelco Dolstra f57a38b109
Remove unused NARExistence table 2017-01-27 12:57:49 +01:00
Eelco Dolstra c2b0d8749f
exportReferencesGraph: Export more complete info in JSON format
This writes info about every path in the closure in the same format as
‘nix path-info --json’. Thus it also includes NAR hashes and sizes.

Example:

  [
    {
      "path": "/nix/store/10h6li26i7g6z3mdpvra09yyf10mmzdr-hello-2.10",
      "narHash": "sha256:0ckdc4z20kkmpqdilx0wl6cricxv90lh85xpv2qljppcmz6vzcxl",
      "narSize": 197648,
      "references": [
        "/nix/store/10h6li26i7g6z3mdpvra09yyf10mmzdr-hello-2.10",
        "/nix/store/27binbdy296qvjycdgr1535v8872vz3z-glibc-2.24"
      ],
      "closureSize": 20939776
    },
    {
      "path": "/nix/store/27binbdy296qvjycdgr1535v8872vz3z-glibc-2.24",
      "narHash": "sha256:1nfn3m3p98y1c0kd0brp80dn9n5mycwgrk183j17rajya0h7gax3",
      "narSize": 20742128,
      "references": [
        "/nix/store/27binbdy296qvjycdgr1535v8872vz3z-glibc-2.24"
      ],
      "closureSize": 20742128
    }
  ]

Fixes #1134.
2017-01-26 20:41:08 +01:00
Eelco Dolstra 6de33a9c67
Add support for passing structured data to builders
Previously, all derivation attributes had to be coerced into strings
so that they could be passed via the environment. This is lossy
(e.g. lists get flattened, necessitating configureFlags
vs. configureFlagsArray, of which the latter cannot be specified as an
attribute), doesn't support attribute sets at all, and has size
limitations (necessitating hacks like passAsFile).

This patch adds a new mode for passing attributes to builders, namely
encoded as a JSON file ".attrs.json" in the current directory of the
builder. This mode is activated via the special attribute

  __structuredAttrs = true;

(The idea is that one day we can set this in stdenv.mkDerivation.)

For example,

  stdenv.mkDerivation {
    __structuredAttrs = true;
    name = "foo";
    buildInputs = [ pkgs.hello pkgs.cowsay ];
    doCheck = true;
    hardening.format = false;
  }

results in a ".attrs.json" file containing (sans the indentation):

  {
    "buildInputs": [],
    "builder": "/nix/store/ygl61ycpr2vjqrx775l1r2mw1g2rb754-bash-4.3-p48/bin/bash",
    "configureFlags": [
      "--with-foo",
      "--with-bar=1 2"
    ],
    "doCheck": true,
    "hardening": {
      "format": false
    },
    "name": "foo",
    "nativeBuildInputs": [
      "/nix/store/10h6li26i7g6z3mdpvra09yyf10mmzdr-hello-2.10",
      "/nix/store/4jnvjin0r6wp6cv1hdm5jbkx3vinlcvk-cowsay-3.03"
    ],
    "propagatedBuildInputs": [],
    "propagatedNativeBuildInputs": [],
    "stdenv": "/nix/store/f3hw3p8armnzy6xhd4h8s7anfjrs15n2-stdenv",
    "system": "x86_64-linux"
  }

"passAsFile" is ignored in this mode because it's not needed - large
strings are included directly in the JSON representation.

It is up to the builder to do something with the JSON
representation. For example, in bash-based builders, lists/attrsets of
string values could be mapped to bash (associative) arrays.
2017-01-26 20:40:33 +01:00
Eelco Dolstra b1f001538e
Fix assertion failure when a path is locked
Fixes:

  nix-store: src/libstore/build.cc:3649: void nix::Worker::run(const Goals&): Assertion `!awake.empty()' failed.
2017-01-26 20:40:33 +01:00
Eelco Dolstra 951357e5fb
UserLock: Fix multi-threaded access to a global variable 2017-01-26 20:40:33 +01:00
Eelco Dolstra a55f589720
openLockFile: Return an AutoCloseFD 2017-01-26 20:40:33 +01:00
Eelco Dolstra c0f2f4eeef
UserLock: Make more RAII-ish 2017-01-26 20:40:33 +01:00
Eelco Dolstra a529c740d2
Moving more code out of DerivationGoal::startBuilder() 2017-01-26 20:40:33 +01:00
Eelco Dolstra e8c43abd9a
On HTTP errors, also show the curl error
This is a hopefully temporary measure to diagnose the intermittent
"HTTP error 200" failures.
2017-01-26 20:40:32 +01:00
Eelco Dolstra 4425a5c547
Move exportReferencesGraph into a separate method
startBuilder() is getting rather obese.
2017-01-26 20:40:32 +01:00
Eelco Dolstra e3bf228c92
Enable verbose curl output
Closes #1182.
2017-01-24 13:57:01 +01:00
Shea Levy bfa41eb671 nix-copy-closure: Implement in C++.
Tests fail currently because the database is not given proper hashes in the VM
2017-01-20 09:47:58 -05:00
Eelco Dolstra 8af062f372 Merge pull request #981 from shlevy/build-remote-c++
build-remote: Implement in C++
2017-01-19 18:21:55 +01:00
Eelco Dolstra 21948deed9
Kill builds when we get EOF on the log FD
This closes a long-time bug that allowed builds to hang Nix
indefinitely (regardless of timeouts) simply by doing

  exec > /dev/null 2>&1; while true; do true; done

Now, on EOF, we just send SIGKILL to the child to make sure it's
really gone.
2017-01-19 17:16:14 +01:00
Eelco Dolstra 2579e32c2b
Use std::unique_ptr for HookInstance 2017-01-19 17:06:04 +01:00
Eelco Dolstra cc3b93c991
Handle SIGINT etc. via a sigwait() signal handler thread
This allows other threads to install callbacks that run in a regular,
non-signal context. In particular, we can use this to signal the
downloader thread to quit.

Closes #1183.
2017-01-17 18:21:02 +01:00
Eelco Dolstra 8079ab87a2 AutoCloseDir: Use std::unique_ptr 2017-01-16 22:39:27 +01:00
Eelco Dolstra 2b9d0a99cb AutoDeleteArray -> std::unique_ptr
Also, switch to C++14 for std::make_unique.
2017-01-16 22:24:49 +01:00
Eelco Dolstra 7adb986e35 Merge pull request #1139 from Mic92/master
Simplify remouting with MS_PRIVATE in sandbox build
2017-01-09 16:46:59 +01:00
Eelco Dolstra b6b142b4b1
Provide /var/run/nscd/socket in the sandbox
Otherwise sandbox builds can fail, e.g.

  $ NIX_REMOTE=local?root=/tmp/nix nix-build '<nixpkgs>' -A hello --option build-use-substitutes false
  ...
  downloading ‘http://ftpmirror.gnu.org/bash/bash-4.3-patches/bash43-047’...
  error: unable to download ‘http://ftpmirror.gnu.org/bash/bash-4.3-patches/bash43-047’: Couldn't resolve host name (6)
2017-01-02 14:46:37 +01:00
Eelco Dolstra d0a2db17d9
Call Aws::InitAPI
This is required now.
2016-12-22 17:39:49 +01:00
Eelco Dolstra 786ee585b8
Add comment 2016-12-22 17:39:49 +01:00
Eelco Dolstra 3a4bd320c2
Revert "Merge branch 'seccomp' of https://github.com/aszlig/nix"
This reverts commit 9f3f2e21ed, reversing
changes made to 47f587700d.
2016-12-19 11:52:57 +01:00
Eelco Dolstra 05862209de
Revert "Give root a valid home directory"
This reverts commit ec7d498b72.
2016-12-19 11:49:03 +01:00
Eelco Dolstra ec7d498b72
Give root a valid home directory
Some programs barf if the current user has a non-writable home
directory, e.g. http://hydra.nixos.org/build/44818144.
2016-12-15 15:56:08 +01:00
Eelco Dolstra 9f3f2e21ed
Merge branch 'seccomp' of https://github.com/aszlig/nix 2016-12-15 12:04:45 +01:00
Eelco Dolstra 47f587700d
Probably fix a segfault in PathLocks 2016-12-09 13:26:43 +01:00
Eelco Dolstra b30d1e7ada
Don't delete .check directories of running builds
We need to keep them around for diffoscope.
2016-12-08 21:38:58 +01:00
Eelco Dolstra 88ef77226e
Fix warning on 32-bit systems
http://hydra.nixos.org/build/44628517
2016-12-08 20:37:58 +01:00
Eelco Dolstra e629a17cc1
Fix build
http://hydra.nixos.org/build/44628517
2016-12-08 20:36:14 +01:00
Eelco Dolstra fe1162a805
S3BinaryCacheStore: Ensure it only builds on Linux 2016-12-08 15:35:46 +01:00
Eelco Dolstra e6a61b8da7
Fix S3BinaryCacheStore
It failed with

   AWS error uploading ‘6gaxphsyhg66mz0a00qghf9nqf7majs2.ls.xz’: Unable to parse ExceptionName: MissingContentLength Message: You must provide the Content-Length HTTP header.

possibly because the istringstream_nocopy introduced in
0d2ebb4373 doesn't supply the seek
method that the AWS library expects. So bring back the old version,
but only for S3BinaryCacheStore.
2016-12-08 15:31:27 +01:00
Eelco Dolstra 9a313469a4
Add a hook to run diffoscope when non-determinism is detected 2016-12-07 17:57:35 +01:00
Eelco Dolstra b07060688a
Keep track of the exact build start/stop times 2016-12-07 16:09:38 +01:00
Eelco Dolstra dadfddfa7c
Bail out early when non-determinism is detected 2016-12-07 15:31:18 +01:00
Eelco Dolstra 8bdf83f936
Add an option to make non-determinism non-fatal
That is, when build-repeat > 0, and the output of two rounds differ,
then print a warning rather than fail the build. This is primarily to
let Hydra check reproducibility of all packages.
2016-12-07 13:16:06 +01:00
Eelco Dolstra ceeedb58d2
Use a steady clock for timeouts
Fixes #1146.
2016-12-06 21:58:04 +01:00
Eelco Dolstra 7a3e7d0e61
nix-store --serve: Suppress log output on stderr when repeating a build 2016-12-06 17:43:39 +01:00
Eelco Dolstra 215b70f51e
Revert "Get rid of unicode quotes (#1140)"
This reverts commit f78126bfd6. There
really is no need for such a massive change...
2016-11-26 00:38:01 +01:00
Guillaume Maudoux f78126bfd6 Get rid of unicode quotes (#1140) 2016-11-25 15:48:27 +01:00
Jörg Thalheim 855abd85d8
Simplify remouting with MS_PRIVATE in sandbox build
also fix race condition if mounts are added after mountinfo is read.
2016-11-25 00:15:39 +01:00
Shea Levy 8bf378e999 Update darwin build for optional sandbox paths
Fixes #1132
2016-11-17 08:06:32 -05:00
aszlig 4e1a2cd537
seccomp: Forge return values for *chown32
These syscalls are only available in 32bit architectures, but libseccomp
should handle them correctly even if we're on native architectures that
do not have these syscalls.

Signed-off-by: aszlig <aszlig@redmoonstudios.org>
2016-11-16 17:29:36 +01:00
aszlig ed64976cec
seccomp: Forge return codes for POSIX ACL syscalls
Commands such as "cp -p" also use fsetxattr() in addition to fchown(),
so we need to make sure these syscalls always return successful as well
in order to avoid nasty "Invalid value" errors.

Signed-off-by: aszlig <aszlig@redmoonstudios.org>
2016-11-16 17:29:14 +01:00
aszlig b90a435332
libstore/build: Forge chown() to return success
What we basically want is a seccomp mode 2 BPF program like this but for
every architecture:

  BPF_STMT(BPF_LD+BPF_W+BPF_ABS, offsetof(struct seccomp_data, nr)),
  BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, __NR_chown, 4, 0),
  BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, __NR_fchown, 3, 0),
  BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, __NR_fchownat, 2, 0),
  BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, __NR_lchown, 1, 0),
  BPF_STMT(BPF_RET+BPF_K, SECCOMP_RET_ALLOW),
  BPF_STMT(BPF_RET+BPF_K, SECCOMP_RET_ERRNO)

However, on 32 bit architectures we do have chown32, lchown32 and
fchown32, so we'd need to add all the architecture blurb which
libseccomp handles for us.

So we only need to make sure that we add the 32bit seccomp arch while
we're on x86_64 and otherwise we just stay at the native architecture
which was set during seccomp_init(), which more or less replicates
setting 32bit personality during runChild().

The FORCE_SUCCESS() macro here could be a bit less ugly but I think
repeating the seccomp_rule_add() all over the place is way uglier.

Another way would have been to create a vector of syscalls to iterate
over, but that would make error messages uglier because we can either
only print the (libseccomp-internal) syscall number or use
seccomp_syscall_resolve_num_arch() to get the name or even make the
vector a pair number/name, essentially duplicating everything again.

Signed-off-by: aszlig <aszlig@redmoonstudios.org>
2016-11-16 16:48:30 +01:00
aszlig 1c52e344c4
Add build dependency for libseccomp
We're going to use libseccomp instead of creating the raw BPF program,
because we have different syscall numbers on different architectures.

Although our initial seccomp rules will be quite small it really doesn't
make sense to generate the raw BPF program because we need to duplicate
it and/or make branches on every single architecture we want to suuport.

Signed-off-by: aszlig <aszlig@redmoonstudios.org>
2016-11-16 16:48:26 +01:00
aszlig e8838713df
Run builds as root in user namespace again
This reverts commit ff0c0b645c.

We're going to use seccomp to allow "cp -p" and force chown-related
syscalls to always return 0.

Signed-off-by: aszlig <aszlig@redmoonstudios.org>
2016-11-16 16:48:08 +01:00
Eelco Dolstra 4be4f6de56
S3BinaryCacheStore:: Eliminate a string copy while uploading
This cuts hydra-queue-runner's peak memory usage by about a third.
2016-11-16 16:21:30 +01:00
Eelco Dolstra 10ae8fabf1 buildPaths(): Handle ecIncompleteClosure
buildPaths() on a non-derivation would incorrectly not throw an error
if the path didn't have a substitute.
2016-11-14 15:00:17 +01:00
Eelco Dolstra b77fb8acb5 Don't rely on %m 2016-11-14 13:37:16 +01:00
Ludovic Courtès ccb1022022 daemon: Do not error out when deduplication fails due to ENOSPC.
This solves a problem whereby if /gnu/store/.links had enough entries,
ext4's directory index would be full, leading to link(2) returning
ENOSPC.

* nix/libstore/optimise-store.cc (LocalStore::optimisePath_): Upon
ENOSPC from link(2), print a message and return instead of throwing a
'SysError'.
2016-11-14 13:35:03 +01:00
Eelco Dolstra dd77f7d593 Store::computeFSClosure(): Support a set of paths
This way, callers can exploits the parallelism of computeFSClosure()
when they have multiple paths that they need the (combined) closure of.
2016-11-10 17:45:04 +01:00
Shea Levy 167d12b02c build-remote: Implement in C++ 2016-11-10 11:09:15 -05:00
Eelco Dolstra e4655b166c copyClosure() / copyStorePath(): Expose dontCheckSigs
Needed by Hydra.
2016-11-09 19:08:20 +01:00
Eelco Dolstra 4b8f1b0ec0 Merge branch 'ssh-store' of https://github.com/shlevy/nix 2016-11-09 18:57:22 +01:00
Eelco Dolstra 21c55ab3b5 Implement backwards-compatible RemoteStore::addToStore()
The SSHStore PR adds this functionality to the daemon, but we have to
handle the case where the Nix daemon is 1.11.

Also, don't require signatures for trusted users. This restores 1.11
behaviour.

Fixes https://github.com/NixOS/hydra/issues/398.
2016-11-09 18:45:06 +01:00
Eelco Dolstra a83b10f84c Typo 2016-11-08 20:19:02 +01:00
Eelco Dolstra 18b7363a69 Support optional sandbox paths
For example, you can now set

  build-sandbox-paths = /dev/nvidiactl?

to specify that /dev/nvidiactl should only be mounted in the sandbox
if it exists in the host filesystem. This is useful e.g. for EC2
images that should support both CUDA and non-CUDA instances.
2016-10-31 17:09:52 +01:00
Shea Levy c4969aebaf Add nix.conf options for -k and -K
Fixes #1084
2016-10-27 12:49:34 -04:00
Eelco Dolstra 5c0bd51d49 Fix build log output in nix-store --serve 2016-10-26 17:13:38 +02:00
Eelco Dolstra d2c58ba605 Restore the CachedFailure status code
The removal of CachedFailure caused the value of TimedOut to change,
which broke timed-out handling in Hydra (so timed-out builds would
show up as "aborted" and would be retried, e.g. at
http://hydra.nixos.org/build/42537427).
2016-10-26 15:02:38 +02:00
Eelco Dolstra fdbbcc4492 Remove addPathToAccessor 2016-10-21 18:09:30 +02:00
Eelco Dolstra 542ae5c8f8 BinaryCacheStore: Optionally write a NAR listing
The store parameter "write-nar-listing=1" will cause BinaryCacheStore
to write a file ‘<store-hash>.ls.xz’ for each ‘<store-hash>.narinfo’
added to the binary cache. This file contains an XZ-compressed JSON
file describing the contents of the NAR, excluding the contents of
regular files.

E.g.

  {
    "version": 1,
    "root": {
      "type": "directory",
      "entries": {
        "lib": {
          "type": "directory",
          "entries": {
            "Mcrt1.o": {
              "type": "regular",
              "size": 1288
            },
            "Scrt1.o": {
              "type": "regular",
              "size": 3920
            },
          }
        }
      }
      ...
    }
  }

(The actual file has no indentation.)

This is intended to speed up the NixOS channels programs index
generator [1], since fetching gazillions of large NARs from
cache.nixos.org is currently a bottleneck for updating the regular
(non-small) channel.

[1] https://github.com/NixOS/nixos-channel-scripts/blob/master/generate-programs-index.cc
2016-10-21 16:50:28 +02:00
Eelco Dolstra 307cc8c33d Merge branch 'priorityqueue' of https://github.com/groxxda/nix 2016-10-19 16:37:04 +02:00
Eelco Dolstra 29727ff944 Shut up clang warning 2016-10-19 15:02:48 +02:00
Eelco Dolstra e5346c54df Fix uninitialised variable 2016-10-19 15:02:38 +02:00
Alexander Ried efb938468c downloader: use priority_queue 2016-10-18 15:45:51 +02:00
Eelco Dolstra ae8884b949 Fix /dev/ptmx in sandboxes
This was broken since ff0c0b645c. Since
I can't figure out how to mount a devpts instance in the sandbox,
let's just bind-mount the host devpts.
2016-10-14 15:42:13 +02:00
Eelco Dolstra 2f9d60ed7f CURL_AT_LEAST_VERSION -> LIBCURL_VERSION_NUM
http://hydra.nixos.org/build/42025230
2016-10-14 14:44:15 +02:00
Eelco Dolstra 5e61b422c5 Fix HTTP/2 support
Commit 86e8c67efc broke it, because
CURL_* are not actually #defines.
2016-10-13 17:25:42 +02:00
Eelco Dolstra fb2dd32100 SSL_CERT_FILE -> NIX_SSL_CERT_FILE
This prevents collisions with the "native" OpenSSL, in particular on
OS X.

Fixes #921.
2016-10-13 17:09:10 +02:00
Eelco Dolstra 816d3e5724 Shut up some warnings 2016-10-12 15:53:38 +02:00
Eelco Dolstra edf9eb8181 querySubstitutablePaths(): Don't query paths for which we already have a substituter 2016-10-07 19:57:47 +02:00
Eelco Dolstra 0c85ef7090 LocalStore::querySubstitutablePaths(): Implement using queryValidPaths() 2016-10-07 19:46:56 +02:00
Eelco Dolstra 844219f364 Store::queryValidPaths(): Use async queryPathInfo()
This allows the binary cache substituter to pipeline requests.
2016-10-07 19:43:36 +02:00
Eelco Dolstra c663b84573 Implement generic Store::queryValidPaths() 2016-10-07 19:20:47 +02:00
Eelco Dolstra 35db4f65a0 Add copyClosure utility function for Hydra 2016-10-07 19:15:25 +02:00
Eelco Dolstra 629ab80022 importPaths(): Fix accessor support for Hydra 2016-10-07 18:13:40 +02:00
Eelco Dolstra ae522f930d Fix getS3Stats() 2016-10-06 17:00:52 +02:00
Eelco Dolstra c6a929986a Use std::random_device 2016-10-05 21:29:18 +02:00
Eelco Dolstra 86e8c67efc Fix build with older versions of libcurl 2016-10-04 14:43:23 +02:00
Eelco Dolstra 4bd51d74af Handle the case where signed-binary-caches consists of whitespace 2016-09-22 15:59:25 +02:00
Eelco Dolstra 818ab58cc6 Add sandbox-dev-shm-size option
Fixes #1069.
2016-09-21 16:54:53 +02:00
Eelco Dolstra c55bf085eb printMsg(lvlError, ...) -> printError(...) etc. 2016-09-21 16:54:53 +02:00
Eelco Dolstra 4036185cb4 Some notational convenience for formatting strings
We can now write

  throw Error("file '%s' not found", path);

instead of

  throw Error(format("file '%s' not found") % path);

and similarly

  printError("file '%s' not found", path);

instead of

  printMsg(lvlError, format("file '%s' not found") % path);
2016-09-21 16:54:53 +02:00
Eelco Dolstra beaefdf706 Tweak 2016-09-20 17:49:31 +02:00
Eelco Dolstra f12d56b27b Improve robustness 2016-09-20 17:25:44 +02:00
Eelco Dolstra 794e4ab475 Fix "Promise already satisfied" error 2016-09-20 17:25:12 +02:00
Eric Litak 0d38b4c792 armv5tel can be built by armv6l and armv7l (#1063) 2016-09-16 22:03:34 +02:00
Eelco Dolstra 75989bdca7 Make computeFSClosure() single-threaded again
The fact that queryPathInfo() is synchronous meant that we needed a
thread for every concurrent binary cache lookup, even though they end
up being handled by the same download thread. Requiring hundreds of
threads is not a good idea. So now there is an asynchronous version of
queryPathInfo() that takes a callback function to process the
result. Similarly, enqueueDownload() now takes a callback rather than
returning a future.

Thus, a command like

  nix path-info --store https://cache.nixos.org/ -r /nix/store/slljrzwmpygy1daay14kjszsr9xix063-nixos-16.09beta231.dccf8c5

that returns 4941 paths now takes 1.87s using only 2 threads (the main
thread and the downloader thread). (This is with a prewarmed
CloudFront.)
2016-09-16 18:54:14 +02:00
Eelco Dolstra 6656ef7b5b Revive binary-caches-parallel-connections
It's a slight misnomer now because it actually limits *all* downloads,
not just binary cache lookups.

Also add a "enable-http2" option to allow disabling use of HTTP/2
(enabled by default).
2016-09-14 16:38:26 +02:00
Eelco Dolstra 90ad02bf62 Enable HTTP/2 support
The binary cache store can now use HTTP/2 to do lookups. This is much
more efficient than HTTP/1.1 due to multiplexing: we can issue many
requests in parallel over a single TCP connection. Thus it's no longer
necessary to use a bunch of concurrent TCP connections (25 by
default).

For example, downloading 802 .narinfo files from
https://cache.nixos.org/, using a single TCP connection, takes 11.8s
with HTTP/1.1, but only 0.61s with HTTP/2.

This did require a fairly substantial rewrite of the Downloader class
to use the curl multi interface, because otherwise curl wouldn't be
able to do multiplexing for us. As a bonus, we get connection reuse
even with HTTP/1.1. All downloads are now handled by a single worker
thread. Clients call Downloader::enqueueDownload() to tell the worker
thread to start the download, getting a std::future to the result.
2016-09-14 16:36:02 +02:00
Eelco Dolstra e07c0dcf5c Move some .drv parsing functions out of util 2016-09-14 10:54:57 +02:00
Shea Levy 196815f700 ssh-store: Start master on-demand 2016-09-12 08:07:50 -04:00
Shea Levy ab31f9986c Inline ssh-store.hh into ssh-store.cc 2016-09-12 08:03:29 -04:00
Eelco Dolstra ff0c0b645c Don't run builds as root in the user namespace
This largely reverts c68e5913c7. Running
builds as root breaks "cp -p", since when running as root, "cp -p"
assumes that it can succesfully chown() files. But that's not actually
the case since the user namespace doesn't provide a complete uid
mapping. So it barfs with a fatal error message ("cp: failed to
preserve ownership for 'foo': Invalid argument").
2016-09-08 18:16:23 +02:00
Eelco Dolstra e4bdd49022 Give a better error message if a path in build-sandbox-paths is invalid 2016-09-08 17:30:25 +02:00
Eelco Dolstra 0babc4ff31 Fix assertion failure after early build setup failure 2016-09-08 17:29:50 +02:00
Shea Levy 584f8a62de Implement nar-based addToStore for remote-store 2016-09-02 14:33:58 -04:00
Shea Levy ecba88de93 Add ssh store implementation 2016-09-02 14:31:38 -04:00
Shea Levy b4b5e9ce2f Add narFromPath op to nix daemon 2016-09-02 14:26:02 -04:00
Shea Levy a705e8ce0a Factor a general remote FS accessor out of BinaryCacheStore 2016-09-02 14:24:34 -04:00
Shea Levy 0f39633290 Factor out the unix domain socket-specific code from RemoteStore 2016-09-02 14:15:04 -04:00
Shea Levy 53b27ddce2 Factor a function to get the store type from a URI out of the main RegisterStoreImplementation 2016-09-02 06:39:29 -04:00
Shea Levy a91954f0c6 Merge openStore and openStoreAt with default arguments 2016-09-02 06:35:48 -04:00
Shea Levy dfe0938614 download.hh: Fix conflicts from nix-channel-c++ merge 2016-08-31 09:57:56 -04:00
Shea Levy 572aba284a Merge branch 'nix-channel-c++' 2016-08-31 09:49:24 -04:00
Eelco Dolstra aa1ea0d1e4 Merge pull request #1030 from pikajude/rsd-cc
Implement resolve-system-dependencies in C++
2016-08-31 15:19:10 +02:00
Eelco Dolstra 6631a6e1a1 Increase the sleep time between download retries 2016-08-30 15:48:24 +02:00
Eelco Dolstra 97b1af1cbe Fix --fallback
This fixes an assertion failure in "assert(goal);" in
Worker::waitForInput() after a substitution goal is cancelled by the
termination of another goal. The problem was the line

  //worker.childTerminated(shared_from_this()); // FIXME

in the SubstitutionGoal destructor. This was disabled because
shared_from_this() obviously doesn't work from a destructor. So we now
use a real pointer for object identity.
2016-08-30 15:45:39 +02:00
Eelco Dolstra a9d4f2b303 Fix queryPathFromHashPart()
The inner lambda was returning a SQLite-internal char * rather than a
std::string, leading to Hydra errors liks

  Caught exception in Hydra::Controller::Root->narinfo "path ‘ø˜£â€™ is not in the Nix store at /nix/store/6mvvyb8fgwj23miyal5mdr8ik4ixk15w-hydra-0.1.1234.abcdef/libexec/hydra/lib/Hydra/Controller/Root.pm line 352."
2016-08-24 14:53:33 +02:00
Eelco Dolstra 22d6e31fc6 Add a mechanism for derivation attributes to reference the derivation's outputs
For example, you can now say:

  configureFlags = "--prefix=${placeholder "out"} --includedir=${placeholder "dev"}";

The strings returned by the ‘placeholder’ builtin are replaced at
build time by the actual store paths corresponding to the specified
outputs.

Previously, you had to work around the inability to self-reference by doing stuff like:

  preConfigure = ''
    configureFlags+=" --prefix $out --includedir=$dev"
  '';

or rely on ad-hoc variable interpolation semantics in Autoconf or Make
(e.g. --prefix=\$(out)), which doesn't always work.
2016-08-17 17:19:32 +02:00
Shea Levy d52d391164 builtins.fetch{url,tarball}: Allow name attribute 2016-08-15 07:37:11 -04:00
Jude Taylor 596e4a5693 remove old traces of resolve-system-dependencies 2016-08-13 15:27:49 -07:00
Shea Levy 59124228b3 nix-channel: implement in c++ 2016-08-11 11:34:43 -04:00
Eelco Dolstra 66adbdfd97 HttpBinaryCacheStore: Retry on transient HTTP errors
This makes us more robust against 500 errors from CloudFront or S3
(assuming the 500 error isn't cached by CloudFront...).
2016-08-10 18:08:23 +02:00
Eelco Dolstra 9204ea7294 Show HTTP error codes 2016-08-10 18:05:35 +02:00
Eelco Dolstra f294623d1d SQLite:: Add some convenience 2016-08-10 18:05:35 +02:00
Eelco Dolstra 6cb4bdf152 FSAccessor: Throw InvalidPath 2016-08-10 18:05:35 +02:00
Eelco Dolstra f43823f676 NarAccessor: Fix handling of non-executable files 2016-08-10 18:05:35 +02:00
Eelco Dolstra d961c29c9c Mark content-addressed paths in the Nix database and in .narinfo
This allows such paths to be imported without signatures.
2016-08-10 18:05:35 +02:00
Eelco Dolstra 36a51ecab3 LocalFSStore::narFromPath(): Handle the diverted store case 2016-08-10 18:05:35 +02:00
Eelco Dolstra 3eb6217508 Add a "root" parameter to local stores
This makes it easier to create a diverted store, i.e.

  NIX_REMOTE="local?root=/tmp/root"

instead of

  NIX_REMOTE="local?real=/tmp/root/nix/store&state=/tmp/root/nix/var/nix" NIX_LOG_DIR=/tmp/root/nix/var/log
2016-08-10 18:05:35 +02:00
Eelco Dolstra 2fad86f361 Remove $NIX_DB_DIR
This variable has no reason to exist, given $NIX_STATE_DIR.
2016-08-10 18:05:35 +02:00
Eelco Dolstra be64fbb501 RemoteStore / nix-daemon: Drop support for Nix < 1.0 2016-08-10 18:05:35 +02:00
Eelco Dolstra ee22a91ab8 makeFixedOutputPath(): Drop superfluous HashType argument 2016-07-26 21:25:52 +02:00
Eelco Dolstra 06bbfb6004 builtins.{fetchurl,fetchTarball}: Support a sha256 attribute
Also, allow builtins.{fetchurl,fetchTarball} in restricted mode if a
hash is specified.
2016-07-26 21:16:52 +02:00
Shea Levy ee3032e4de Merge branch 'find-runtime-roots-c++' 2016-07-24 07:33:49 -04:00
Shea Levy 18b0808475 Respect --keep-going when a substituter fails.
Fixes #977
2016-07-23 09:16:08 -04:00
Eelco Dolstra e19c90fc6b Fix random failures caused by CurlDownloader modifying a shared string 2016-07-21 18:35:31 +02:00
Eelco Dolstra ea8e8df6c7 NarInfo::NarInfo(): Ensure that we get a NAR size/hash 2016-07-21 18:35:12 +02:00
Eelco Dolstra d57981bac4 Store::queryMissing(): Use a thread pool
For one particular NixOS configuration, this cut the runtime of
"nix-store -r --dry-run" from 6m51s to 3.4s. It also fixes a bug in
the size calculation that was causing certain paths to be counted
twice, e.g. before:

  these paths will be fetched (1249.98 MiB download, 2995.74 MiB unpacked):

and after:

  these paths will be fetched (1219.56 MiB download, 2862.17 MiB unpacked):
2016-07-21 17:50:39 +02:00
Eelco Dolstra a728780fbd Store::computeFSClosure(): Use thread pool
This speeds up queries against the binary cache.
2016-07-21 14:13:35 +02:00
Shea Levy 3c46fe62b8 find-runtime-roots: fold into gc.cc 2016-07-21 07:04:41 -04:00
Shea Levy cb5e7254b6 Modernize AutoCloseFD 2016-07-11 15:44:44 -04:00
Eelco Dolstra 74dd603495 Re-implement negative binary cache lookup caching 2016-06-20 17:39:05 +02:00
Eelco Dolstra c68e5913c7 Run builds in a user namespace
This way, all builds appear to have a uid/gid of 0 inside the
chroot. In the future, this may allow using programs like
systemd-nspawn inside builds, but that will require assigning a larger
UID/GID map to the build.

Issue #625.
2016-06-09 18:30:39 +02:00
Eelco Dolstra 202683a4fc Use O_CLOEXEC in most places 2016-06-09 16:37:08 +02:00
Eelco Dolstra 9bdd949cfd Fix "creating statement: table ValidPaths has no column named ultimate" 2016-06-03 16:06:42 +02:00
Eelco Dolstra 5e51ffb1c2 Support sandbox builds by non-root users
This allows an unprivileged user to perform builds on a diverted store
(i.e. where the physical store location differs from the logical
location).

Example:

  $ NIX_LOG_DIR=/tmp/log NIX_REMOTE="local?real=/tmp/store&state=/tmp/var" nix-build -E \
    'with import <nixpkgs> {}; runCommand "foo" { buildInputs = [procps nettools]; } "id; ps; ifconfig; echo $out > $out"'

will do a build in the Nix store physically in /tmp/store but
logically in /nix/store (and thus using substituters for the latter).
2016-06-03 15:59:28 +02:00
Eelco Dolstra 2f8b0e557b Consistent quotes 2016-06-03 14:03:09 +02:00
Eelco Dolstra 080d607975 Don't call shared_from_this() from a destructor 2016-06-03 14:02:44 +02:00
Eelco Dolstra 30c8c3ba2d Fix some more references to storeDir 2016-06-03 14:02:44 +02:00
Eelco Dolstra a8dfdc52b8 Merge pull request #925 from abbradar/master
Show both cycle ends
2016-06-03 13:58:51 +02:00
Nikolay Amiantov c87a56f4d0 Show both cycle ends 2016-06-03 14:25:37 +03:00
Eelco Dolstra 75361b6dce Fix narrowing conversion from int64_t to bool
http://hydra.nixos.org/build/36613774
2016-06-03 13:20:46 +02:00
Eelco Dolstra d64e0c1b64 Make derivationFromPath work on diverted stores 2016-06-02 18:43:36 +02:00
Eelco Dolstra a24f2c9b84 nix run: Mount the Nix store in a private namespace
This is a convenience command to allow users who are not privileged to
create /nix/store to use Nix with regular binary caches. For example,

  $ NIX_REMOTE="local?state=$HOME/nix/var&real=/$HOME/nix/store" nix run firefox bashInteractive

will download Firefox and bash from cache.nixos.org, then start a
shell in which $HOME/nix/store is mounted on /nix/store.
2016-06-02 16:51:43 +02:00
Eelco Dolstra 4494000e04 LocalStore: Allow the physical and logical store directories to differ
This is primarily to subsume the functionality of the
copy-from-other-stores substituter. For example, in the NixOS
installer, we can now do (assuming we're in the target chroot, and the
Nix store of the installation CD is bind-mounted on /tmp/nix):

  $ nix-build ... --option substituters 'local?state=/tmp/nix/var&real=/tmp/nix/store'

However, unlike copy-from-other-stores, this also allows write access
to such a store. One application might be fetching substitutes for
/nix/store in a situation where the user doesn't have sufficient
privileges to create /nix, e.g.:

  $ NIX_REMOTE="local?state=/home/alice/nix/var&real=/home/alice/nix/store" nix-build ...
2016-06-02 16:02:48 +02:00
Eelco Dolstra 064816ab98 Respect build-use-substitutes 2016-06-02 16:02:48 +02:00
Eelco Dolstra 812c0dfbe2 Allow setting the state directory as a store parameter
E.g. "local?store=/tmp/store&state=/tmp/var".
2016-06-02 16:02:48 +02:00
Eelco Dolstra f2682e6e18 <nix/fetchurl.nix>: Use tarballs.nixos.org
This ensures that the disappearance of upstream bootstrap tarballs
(e.g. https://github.com/NixOS/nixpkgs-channels/pull/1) doesn't break
stdenv rebuilds.
2016-06-01 17:11:51 +02:00
Eelco Dolstra dead8189ac Typo 2016-06-01 16:56:22 +02:00
Eelco Dolstra e24e2caaaf Skip substituters with an incompatible store directory 2016-06-01 16:40:49 +02:00
Eelco Dolstra cf198952d0 HttpBinaryCacheStore: Fix caching of WantMassQuery
Also, test HttpBinaryCacheStore in addition to LocalBinaryCacheStore.
2016-06-01 16:24:17 +02:00
Eelco Dolstra 7850d3d279 Make the store directory a member variable of Store 2016-06-01 16:24:17 +02:00
Eelco Dolstra a9fa5e050a Shut up some clang warnings 2016-05-31 13:31:04 +02:00
Eelco Dolstra 10f3a2e5f2 Fix clang build failure
Apparently opinion is divided on whether [[noreturn]] is allowed on a
lambda: http://stackoverflow.com/questions/26888805/how-to-declare-a-lambdas-operator-as-noreturn

http://hydra.nixos.org/build/36462100
2016-05-31 13:23:54 +02:00
Eelco Dolstra c2d27d30cf nix-copy-closure / build-remote.pl: Disable signature checking
This restores the Nix 1.11 behaviour.
2016-05-31 11:48:05 +02:00
Eelco Dolstra cd35f0280c Fix build 2016-05-30 16:12:50 +02:00
Eelco Dolstra 57d33013ce Check signatures before downloading the substitute 2016-05-30 15:18:12 +02:00
Eelco Dolstra bac123ddd9 Test the NAR info cache 2016-05-30 15:18:12 +02:00
Eelco Dolstra 3593c8285d Re-implement binary cache signature checking
This is now done in LocalStore::addToStore(), rather than in the
binary cache substituter (which no longer exists).
2016-05-30 15:18:12 +02:00
Eelco Dolstra 12ddbad458 LocalStore::addToStore: Verify hash of the imported path 2016-05-30 15:18:12 +02:00
Eelco Dolstra e222484401 Re-implement the WantMassQuery property of binary caches 2016-05-30 15:18:12 +02:00
Eelco Dolstra b66ab6cdbc Fix repair during substitution 2016-05-30 15:18:12 +02:00
Eelco Dolstra 3be2e71ab3 BinaryCacheStore: Remove buildPaths() / ensurePath() 2016-05-30 15:18:12 +02:00
Eelco Dolstra 75d2492f20 Make the aws-cpp-sdk dependency optional 2016-05-04 17:16:48 +02:00
Eelco Dolstra 6c75cf69c3 Cleanup: Remove singleton() 2016-05-04 16:16:53 +02:00
Eelco Dolstra 0d4a10e910 Do compression in a sink 2016-05-04 16:16:53 +02:00
Eelco Dolstra c6a21aed07 More GC fixes 2016-05-04 16:16:53 +02:00
Eelco Dolstra 538a64e8c3 Add a Store::addToStore() variant that accepts a NAR
As a side effect, this ensures that signatures are propagated when
copying paths between stores.

Also refactored import/export to make use of this.
2016-05-04 16:15:54 +02:00
Eelco Dolstra f435f82475 Remove OpenSSL-based signing 2016-05-04 11:01:48 +02:00
Eelco Dolstra dfebfc835f Add a copyStorePath() utility function 2016-05-04 11:01:48 +02:00
Eelco Dolstra 38539b943a Add fetchgit builtin
The function builtins.fetchgit fetches Git repositories at evaluation
time, similar to builtins.fetchTarball. (Perhaps the name should be
changed, being confusing with respect to Nixpkgs's fetchgit function,
with works at build time.)

Example:

  (import (builtins.fetchgit git://github.com/NixOS/nixpkgs) {}).hello

or

  (import (builtins.fetchgit {
    url = git://github.com/NixOS/nixpkgs-channels;
    rev = "nixos-16.03";
  }) {}).hello

Note that the result does not contain a .git directory.
2016-04-29 20:47:36 +02:00
Eelco Dolstra 4dde0b0562 BinaryCacheStore: Support bzip2 compression 2016-04-29 17:43:37 +02:00
Eelco Dolstra 6963de2091 nix verify --all: Support local binary caches 2016-04-29 17:34:31 +02:00
Eelco Dolstra 0dd988d2e3 Better error message 2016-04-29 17:33:22 +02:00
Eelco Dolstra 5acb691402 BinaryCacheStore: Support "none" compression method 2016-04-29 17:02:57 +02:00
Eelco Dolstra 8e065c6b3e BinaryCacheStore: Make the signing key a parameter 2016-04-29 16:47:20 +02:00
Eelco Dolstra f6aee2f477 BinaryCacheStore::queryPathInfo: Don't check signatures
Other stores don't do this either. It's up to the caller to check
signatures.
2016-04-29 16:28:57 +02:00
Eelco Dolstra 95d20dfde9 Allow parameters in store URIs
This is to allow store-specific configuration,
e.g. s3://my-cache?compression=bzip2&secret-key=/path/to/key.
2016-04-29 16:26:16 +02:00
Eelco Dolstra aa3bc3d5dc Eliminate the substituter mechanism
Substitution is now simply a Store -> Store copy operation, most
typically from BinaryCacheStore to LocalStore.
2016-04-29 13:57:08 +02:00
Eelco Dolstra 21e9d183cc Really handle carriage return 2016-04-28 14:27:00 +02:00
Eelco Dolstra ce5776758d Fix error message 2016-04-28 14:12:10 +02:00
Eelco Dolstra cc804d0dc6 Handle carriage return 2016-04-25 19:18:45 +02:00
Eelco Dolstra 5761827d5b Show the log tail when a build fails
If --no-build-output is given (which will become the default for the
"nix" command at least), show the last 10 lines of the build output if
the build fails.
2016-04-25 19:18:45 +02:00
Eelco Dolstra 6e1b099279 Remove --print-build-trace
This was added to support Hydra, but Hydra no longer uses it.
2016-04-25 19:18:45 +02:00
Eelco Dolstra 9eba2c3945 Fix "path is not in the Nix store" during GC 2016-04-25 19:18:45 +02:00
Eelco Dolstra 41633f9f73 Improved logging abstraction
This also gets rid of --log-type, since the nested log type isn't
useful in a multi-threaded situation, and nobody cares about the
"pretty" log type.
2016-04-25 19:18:45 +02:00
Eelco Dolstra 0207272b28 BinaryCacheStore: When adding a path, ensure the references are valid
This prevents copying a partial closure to a binary cache.
2016-04-22 12:15:06 +02:00
Eelco Dolstra 21ef1670b3 Fix test failures 2016-04-21 18:21:25 +02:00
Eelco Dolstra 7d14f5c331 Implement S3BinaryCacheStore::queryAllValidPaths()
This allows commands like "nix verify --all" or "nix path-info --all"
to work on S3 caches.

Unfortunately, this requires some ugly hackery: when querying the
contents of the bucket, we don't want to have to read every .narinfo
file. But the S3 bucket keys only include the hash part of each store
path, not the name part. So as a special exception
queryAllValidPaths() can now return store paths *without* the name
part, and queryPathInfo() accepts such store paths (returning a
ValidPathInfo object containing the full name).
2016-04-21 17:53:47 +02:00
Eelco Dolstra d155d80155 Move S3BinaryCacheStore from Hydra
This allows running arbitrary Nix commands against an S3 binary cache.

To do: make this a compile time option to prevent a dependency on
aws-sdk-cpp.
2016-04-21 16:08:51 +02:00
Eelco Dolstra ddea253ff8 RemoteStore: Propagate InvalidPath exceptions from the daemon 2016-04-20 15:28:07 +02:00
Eelco Dolstra c0c4ddcd9c BinaryCacheStore: Insert new paths into the disk cache 2016-04-20 15:27:48 +02:00
Eelco Dolstra 451ebf24ce Cache path info lookups in SQLite
This re-implements the binary cache database in C++, allowing it to be
used by other Store backends, in particular the S3 backend.
2016-04-20 14:12:38 +02:00
Eelco Dolstra e0204f8d46 Move path info caching from BinaryCacheStore to Store
Caching path info is generally useful. For instance, it speeds up "nix
path-info -rS /run/current-system" (i.e. showing the closure sizes of
all paths in the closure of the current system) from 5.6s to 0.15s.

This also eliminates some APIs like Store::queryDeriver() and
Store::queryReferences().
2016-04-19 18:52:53 +02:00
Dan Peebles 608b0265e1 Print out all bad references/requisites at once
Also updates tests to check for new information. Fixes #799
2016-04-16 19:58:26 -04:00
Eelco Dolstra 0423787086 Make the .narinfo cache bigger 2016-04-15 15:39:48 +02:00
Eelco Dolstra a7d8eaba54 BinaryCacheStore: Do negative caching of .narinfo lookups 2016-04-15 15:39:48 +02:00
Eelco Dolstra d1b0909894 BinaryCacheStore::readFile(): Return a shared_ptr to a string
This allows readFile() to indicate that a file doesn't exist, and
might eliminate some large string copying.
2016-04-15 15:39:48 +02:00
Eelco Dolstra c045630522 Support channel:<channel-name> URIs
For convenience, you can now say

  $ nix-env -f channel:nixos-16.03 -iA hello

instead of

  $ nix-env -f https://nixos.org/channels/nixos-16.03/nixexprs.tar.xz -iA hello

Similarly,

  $ nix-shell -I channel:nixpkgs-unstable -p hello
  $ nix-build channel:nixos-15.09 -A hello

Abstracting over the NixOS/Nixpkgs channels location also allows us to
use a more efficient transport (e.g. Git) in the future.
2016-04-14 17:26:57 +02:00
Eelco Dolstra 3c1c6b8f00 Set RLIMIT_CORE to 0, infinity in builders
This prevents the builder from being affected by whatever the host
system limits happen to be.
2016-04-14 13:39:14 +02:00
Eelco Dolstra 96515b0c0d Fix std::atomic_flag build failure
http://hydra.nixos.org/build/34453794
2016-04-14 12:50:01 +02:00
Eelco Dolstra 867967265b Remove manifest support
Manifests have been superseded by binary caches for years. This also
gets rid of nix-pull, nix-generate-patches and bsdiff/bspatch.
2016-04-11 16:20:15 +02:00
Eelco Dolstra 8cffec8485 Remove failed build caching
This feature was implemented for Hydra, but Hydra no longer uses it.
2016-04-08 18:19:04 +02:00
Eelco Dolstra f398949b40 Make LocalStore thread-safe
Necessary for multi-threaded commands like "nix verify-paths".
2016-04-08 18:07:13 +02:00
Eelco Dolstra 05fbc606fc nix verify-paths: Add ‘--sigs-needed <N>’ flag
This specifies the number of distinct signatures required to consider
each path "trusted".

Also renamed ‘--no-sigs’ to ‘--no-trust’ for the flag that disables
verifying whether a path is trusted (since a path can also be trusted
if it has no signatures, but was built locally).
2016-04-07 15:16:57 +02:00
Eelco Dolstra 6b2ae52808 Use secret-key-files for verifying 2016-04-07 15:16:57 +02:00
Eelco Dolstra e39999ed48 Sign locally-built paths
Locally-built paths are now signed automatically using the secret keys
specified by the ‘secret-key-files’ option.
2016-04-07 15:16:57 +02:00
Eelco Dolstra dc82160164 Fix "tar: This does not look like a tar archive" with fetchTarball / -I http://
The 304 Not Modified was not handled correctly, so the empty result
from the conditional request would overwrite the previous tarball.
2016-04-06 16:57:20 +02:00
Eelco Dolstra b654381eb3 Add "nix sign-paths" command
E.g.

  $ nix sign-paths -k ./secret -r $(type -p geeqie)

signs geeqie and all its dependencies using the key in ./secret.
2016-04-05 16:39:29 +02:00
Eelco Dolstra d0f5719c2a Add "nix copy-sigs" command
This imports signatures from one store into another. E.g.

  $ nix copy-sigs -r /run/current-system -s https://cache.nixos.org/
  imported 595 signatures
2016-04-05 16:39:23 +02:00
Eelco Dolstra 80da7a6375 Probably fix SQLITE_BUSY errors 2016-04-05 15:29:56 +02:00
Eelco Dolstra 37a337bcec throwSQLiteError(): Check for SIGINT so we don't loop forever 2016-04-04 15:08:08 +02:00
Eelco Dolstra 9cee600c88 LocalStore: Keep track of ultimately trusted paths
These are content-addressed paths or outputs of locally performed
builds. They are trusted even if they don't have signatures, so "nix
verify-paths" won't complain about them.
2016-03-30 17:35:48 +02:00
Eelco Dolstra 3d119f0a3b Improve the SQLite wrapper API
In particular, this eliminates a bunch of boilerplate code.
2016-03-30 15:50:45 +02:00
Eelco Dolstra d9c5e3bbf0 Factour out SQLite handling 2016-03-30 13:27:25 +02:00
Eelco Dolstra 2ae43ced9a Turn retrying SQLite transactions into a higher-order function 2016-03-30 12:04:27 +02:00
Eelco Dolstra 88541569a2 HttpBinaryCacheStore: Treat 403 errors as 404 2016-03-30 11:17:51 +02:00
Eelco Dolstra de88004a9d CurlDownloader: Fix HTTP error processing 2016-03-30 11:17:35 +02:00
Eelco Dolstra 784ee35c80 Add "nix verify-paths" command
Unlike "nix-store --verify-path", this command verifies signatures in
addition to store path contents, is multi-threaded (especially useful
when verifying binary caches), and has a progress indicator.

Example use:

$ nix verify-paths --store https://cache.nixos.org -r $(type -p thunderbird)
...
[17/132 checked] checking ‘/nix/store/rawakphadqrqxr6zri2rmnxh03gqkrl3-autogen-5.18.6’
2016-03-29 16:37:16 +02:00
Eelco Dolstra 374198ad6d Move signature support from NarInfo to ValidPathInfo 2016-03-24 11:41:00 +01:00
Eelco Dolstra 11525377e1 Typos 2016-03-24 11:27:58 +01:00
Eelco Dolstra 8b7839b608 HttpBinaryCacheStore: Make thread-safe 2016-03-24 11:10:05 +01:00
Eelco Dolstra c7d44bad00 Drop support for daemon socket path >= 108 characters
Doing a chdir() is a bad idea in multi-threaded programs, leading to
failures such as

  error: cannot connect to daemon at ‘/nix/var/nix/daemon-socket/socket’: No such file or directory

Since Linux doesn't have a connectat() syscall like FreeBSD, there is
no way we can support this in a race-free way.
2016-03-23 17:16:16 +01:00
Eelco Dolstra 056b3ecfa4 LocalStoreAccessor::stat: Handle ENOTDIR
Closes https://github.com/NixOS/hydra/pull/286.
2016-03-23 11:17:46 +01:00
Eelco Dolstra bb1034316d Don't overload dumpPath() 2016-03-22 14:21:45 +01:00
Eelco Dolstra 712b616a84 Move signatures from NarInfo to ValidPathInfo
This allows queryPathInfo() to return signatures.
2016-03-21 18:05:47 +01:00
Eelco Dolstra 1c5f73f529 Add Store::dumpPath() method
This allows applying nix-store --verify-path to binary cache stores:

  NIX_REMOTE=https://cache.nixos.org nix-store --verify-path /nix/store/s5c7...
2016-03-21 17:55:57 +01:00
Eelco Dolstra 87295b9844 Drop support for upgrading from Nix <= 0.12 2016-03-21 15:09:03 +01:00
Eelco Dolstra 02654f782f Fix Darwin build
http://hydra.nixos.org/build/33279996
2016-03-15 12:11:27 +01:00
Eelco Dolstra 00a75b1cd2 Fix another mismatched tag
http://hydra.nixos.org/build/33279570
2016-03-14 15:32:34 +01:00
Eelco Dolstra e7c76f7274 BinaryCacheStore::isValidPath(): Use .narinfo cache
If a path is in the .narinfo cache, obviously it's valid.
2016-03-14 12:33:06 +01:00
Eelco Dolstra b4e0335d4d Add option binary-cache-secret-key-file for signing binary caches 2016-03-04 17:45:22 +01:00
Eelco Dolstra af7cdb1096 BinaryCacheStore: Remove publicKeyFile argument
The public key can be derived from the secret key, so there's no need
for the user to supply it separately.
2016-03-04 17:45:22 +01:00
Eelco Dolstra 42bc395b63 Eliminate some large string copying 2016-03-04 16:49:56 +01:00
Eelco Dolstra 7c9d7a253c Merge branch 'new-cli' 2016-03-04 15:21:23 +01:00
Eelco Dolstra 76f1ba4f3b Add file missing from 201b48de60 2016-03-03 18:03:34 +01:00
Nathan Zadoks fe2be8f016 build.cc: fs.h doesn't appear to be necessary anymore 2016-03-03 14:11:00 +01:00
Eelco Dolstra 5a8455c85e Provide function required by Hydra 2016-03-02 18:21:48 +01:00
Eelco Dolstra 201b48de60 Add an HTTP binary cache store
Allowing stuff like

  NIX_REMOTE=https://cache.nixos.org nix-store -qR /nix/store/x1p1gl3a4kkz5ci0nfbayjqlqmczp1kq-geeqie-1.1

or

  NIX_REMOTE=https://cache.nixos.org nix-store --export /nix/store/x1p1gl3a4kkz5ci0nfbayjqlqmczp1kq-geeqie-1.1 | nix-store --import
2016-03-02 15:46:07 +01:00
Eelco Dolstra 0402b6398d Eliminate local-binary-cache-store.hh 2016-03-02 15:46:07 +01:00
Eelco Dolstra 68a5414982 Make store implementations pluggable
This for instance allows hydra-queue-runner to add the S3 backend
at runtime.
2016-03-02 15:46:07 +01:00
Eelco Dolstra 0a62d9b3d7 Remove bad assertion 2016-03-02 15:46:07 +01:00
Eelco Dolstra cca4a8dc1a importPaths(): Optionally add NARs to binary cache accessor
This enables an optimisation in hydra-queue-runner, preventing a
download of a NAR it just uploaded to the cache when reading files
like hydra-build-products.
2016-03-02 15:46:07 +01:00
Eelco Dolstra e9c50064b5 Add an HTTP binary cache store
Allowing stuff like

  NIX_REMOTE=https://cache.nixos.org nix-store -qR /nix/store/x1p1gl3a4kkz5ci0nfbayjqlqmczp1kq-geeqie-1.1

or

  NIX_REMOTE=https://cache.nixos.org nix-store --export /nix/store/x1p1gl3a4kkz5ci0nfbayjqlqmczp1kq-geeqie-1.1 | nix-store --import
2016-02-29 18:15:20 +01:00
Eelco Dolstra 6170bb474b Eliminate local-binary-cache-store.hh 2016-02-29 16:14:39 +01:00
Eelco Dolstra 0b907321cc Make store implementations pluggable
This for instance allows hydra-queue-runner to add the S3 backend
at runtime.
2016-02-29 16:11:11 +01:00
Eelco Dolstra d0344dd2c1 Remove bad assertion 2016-02-26 21:43:59 +01:00
Eelco Dolstra bcc9943cee importPaths(): Optionally add NARs to binary cache accessor
This enables an optimisation in hydra-queue-runner, preventing a
download of a NAR it just uploaded to the cache when reading files
like hydra-build-products.
2016-02-26 15:20:10 +01:00
Eelco Dolstra 1042c10fd0 Add NAR / Store accessor abstraction
This is primary to allow hydra-queue-runner to extract files like
"nix-support/hydra-build-products" from NARs in binary caches.
2016-02-25 17:43:19 +01:00
Eelco Dolstra 152b1d6bf9 deletePath(): Succeed if path doesn't exist
Also makes it robust against concurrent deletions.
2016-02-24 17:44:55 +01:00
Eelco Dolstra 28e7e29abd Eliminate reserveSpace flag 2016-02-24 17:44:55 +01:00
Eelco Dolstra 5a64e66268 LocalStore::addTextToStore(): Don't read the path we just wrote
This eliminates some unnecessary (presumably cached) I/O.
2016-02-24 17:11:31 +01:00
Eelco Dolstra 9ccbd55c5b BinaryCacheStore: Implement addToStore()
So now you can do

  $ NIX_REMOTE=file:///tmp/binary-cache nix-instantiate '<nixpkgs>' -A hello

and lots of other operations.
2016-02-24 16:52:28 +01:00
Eelco Dolstra 30e9d01516 openStoreAt(): Initialise the binary cache 2016-02-24 16:52:07 +01:00
Eelco Dolstra ba0a81d14f Show a proper error message for unimplemented binary cache operations 2016-02-24 14:57:30 +01:00
Eelco Dolstra 263187a2ec Move BinaryCacheStore / LocalBinaryCacheStore from Hydra
So you can now do:

  $ NIX_REMOTE=file:///tmp/binary-cache nix-store -qR /nix/store/...
2016-02-24 14:48:16 +01:00
Eelco Dolstra 5f862658c3 Remove bad daemon connections from the pool
This is necessary for long-running processes like hydra-queue-runner:
if a nix-daemon worker is killed, we need to stop reusing that
connection.
2016-02-24 11:39:56 +01:00
Eelco Dolstra d5626bf4c1 Pool<T>: Allow a maximum pool size 2016-02-23 16:40:16 +01:00
Eelco Dolstra e292144d46 RemoteStore: Make thread-safe
This allows a RemoteStore object to be used safely from multiple
threads concurrently. It will make multiple daemon connections if
necessary.

Note: pool.hh and sync.hh have been copied from the Hydra source tree.
2016-02-23 15:00:59 +01:00
Eelco Dolstra d361901bfe curl: Set CURLOPT_NOSIGNAL
Otherwise using curl is not safe in multi-threaded applications
because it installs a SIGALRM handler.
2016-02-22 15:51:14 +01:00
Eelco Dolstra b49d323ce2 Fix build without sodium
http://hydra.nixos.org/build/32085949
2016-02-17 12:42:14 +01:00
Eelco Dolstra c4d22997f3 Add C++ functions for .narinfo processing / signing
This is currently only used by the Hydra queue runner rework, but like
eff5021eaa it presumably will be useful
for the C++ rewrite of nix-push and
download-from-binary-cache. (@shlevy)
2016-02-16 16:38:44 +01:00
Eelco Dolstra 5ac27053e9 Rename ValidPathInfo::hash -> narHash for consistency 2016-02-16 11:49:12 +01:00
Eelco Dolstra c8f4d89a34 Expose the export magic value and move LocalStore::queryReferences to Store 2016-02-15 15:01:26 +01:00
Eelco Dolstra d089372565 Add function to extract hash part of a store path 2016-02-15 15:01:26 +01:00
Eelco Dolstra ae4a3cfa03 Move addPermRoot into Store 2016-02-11 16:14:42 +01:00
Eelco Dolstra fd205fb6f8 ref<T>: Add cast operator 2016-02-11 15:32:48 +01:00
Eelco Dolstra fa7cd5369b StoreAPI -> Store
Calling a class an API is a bit redundant...
2016-02-04 14:48:42 +01:00
Eelco Dolstra c10c61449f Eliminate the "store" global variable
Also, move a few free-standing functions into StoreAPI and Derivation.

Also, introduce a non-nullable smart pointer, ref<T>, which is just a
wrapper around std::shared_ptr ensuring that the pointer is never
null. (For reference-counted values, this is better than passing a
"T&", because the latter doesn't maintain the refcount. Usually, the
caller will have a shared_ptr keeping the value alive, but that's not
always the case, e.g., when passing a reference to a std::thread via
std::bind.)
2016-02-04 14:28:26 +01:00
Eelco Dolstra d367b8e787 Add build mode to compute fixed-output derivation hashes
For example,

  $ nix-build --hash -A nix-repl.src

will build the fixed-output derivation nix-repl.src (a fetchFromGitHub
call), but instead of *verifying* the hash given in the Nix
expression, it prints out the resulting hash, and then moves the
result to its content-addressed location in the Nix store. E.g

  build produced path ‘/nix/store/504a4k6zi69dq0yjc0bm12pa65bccxam-nix-repl-8a2f5f0607540ffe56b56d52db544373e1efb980-src’ with sha256 hash ‘0cjablz01i0g9smnavhf86imwx1f9mnh5flax75i615ml71gsr88’

The goal of this is to make all nix-prefetch-* scripts unnecessary: we
can just let Nix run the real thing (i.e., the corresponding fetch*
derivation).

Another example:

  $ nix-build --hash -E 'with import <nixpkgs> {}; fetchgit { url = "https://github.com/NixOS/nix.git"; sha256 = "ffffffffffffffffffffffffffffffffffffffffffffffffffff"; }'
  ...
  git revision is 9e7c1a4bbd
  ...
  build produced path ‘/nix/store/gmsnh9i7x4mb7pyd2ns7n3c9l90jfsi1-nix’ with sha256 hash ‘1188xb621diw89n25rifqg9lxnzpz7nj5bfh4i1y3dnis0dmc0zp’

(Having to specify a fake sha256 hash is a bit annoying...)
2016-01-31 12:18:09 +01:00
Eelco Dolstra 9e7c1a4bbd Use the daemon when we don't have write access to the Nix database 2016-01-31 10:28:48 +01:00
Eelco Dolstra 786046cf13 --option build-repeat: Keep the differing output if -K is given
Similar to 00903fa799. Regardless of -K,
we now also print which output differs.
2016-01-12 18:26:24 +01:00
Eelco Dolstra 8906eda2f9 Canonicalize gids to 0
Previously files in the Nix store were owned by root or by nixbld,
depending on whether they were created by a substituter or by a
builder. This doesn't matter much, but causes spurious diffoscope
differences. So use root everywhere.
2016-01-12 17:27:40 +01:00
Eelco Dolstra 00903fa799 --check: Keep the differing output if -K is given
This makes it easier to investigate the non-determinism, e.g.

  $ nix-build pkgs/stdenv/linux -A stage1.pkgs.zlib --check -K
  error: derivation ‘/nix/store/l54i8wlw22656i4pk05c52ngv9rpl39q-zlib-1.2.8.drv’ may not be deterministic: output ‘/nix/store/11a27shh6n2ivi4a7s964i65ql80cf27-zlib-1.2.8’ differs from ‘/nix/store/11a27shh6n2ivi4a7s964i65ql80cf27-zlib-1.2.8-check’

  $ diffoscope /nix/store/11a27shh6n2ivi4a7s964i65ql80cf27-zlib-1.2.8 /nix/store/11a27shh6n2ivi4a7s964i65ql80cf27-zlib-1.2.8-check
  ...
  ├── lib/libz.a
  │   ├── metadata
  │   │ @@ -1,15 +1,15 @@
  │   │ -rw-r--r-- 30001/30000   3096 Jan 12 15:20 2016 adler32.o
  ...
  │   │ +rw-r--r-- 30001/30000   3096 Jan 12 15:28 2016 adler32.o
  ...
2016-01-12 16:44:26 +01:00
Eelco Dolstra 0cad1f8049 --check: Fix "failed to produce output path"
This occured when sandbox building is disabled, at least one output
exists, and at least one other output does not.
2016-01-12 15:13:47 +01:00
Eelco Dolstra 1c57ab8b31 --check: Fix assertion failure when some outputs are missing
E.g.

  $ nix-build pkgs/stdenv/linux/ -A stage1.pkgs.perl --check
  nix-store: src/libstore/build.cc:1323: void nix::DerivationGoal::tryToBuild(): Assertion `buildMode != bmCheck || validPaths.size() == drv->outputs.size()' failed.

when perl.out exists but perl.man doesn't. The fix is to only check
the outputs that exist. Note that "nix-build -A stage1.pkgs.all
--check" will still give a (proper) error in this case.
2016-01-12 14:54:39 +01:00
Eelco Dolstra 458711e4ee Fix "Bad address" executing build hook
This was observed in the deb_debian7x86_64 build:
http://hydra.nixos.org/build/29973215

Calling c_str() on a temporary should be fine because the temporary
shouldn't be destroyed until after the execl() call, but who knows...
2016-01-07 15:10:14 +01:00
Eelco Dolstra 9aac1861f7 Fix some signedness warnings 2016-01-07 14:37:39 +01:00
Eelco Dolstra 02a66b3fd7 nix-store --repair-path: Rebuild if there is no substituter 2016-01-06 22:07:59 +01:00
Eelco Dolstra caaaff3954 Fix --repair failure on multiple-output derivations
If repair found a corrupted/missing path that depended on a
multiple-output derivation, and some of the outputs of the latter were
not present, it failed with a message like

  error: path ‘/nix/store/cnfn9d5fjys1y93cz9shld2xwaibd7nn-bash-4.3-p42-doc’ is not valid
2016-01-06 21:49:32 +01:00
Eelco Dolstra 743e310046 Fix non-Darwin build 2016-01-05 13:31:15 +01:00
Tuomas Tynkkynen f770b9e6c5 libstore: mmap() returns MAP_FAILED, not NULL on failure 2016-01-05 13:26:35 +01:00
Eelco Dolstra 71a93a5f0e Don't allow sandbox profile except in relaxed mode
This makes Darwin consistent with Linux: Nix expressions can't break
out of the sandbox unless relaxed sandbox mode is enabled.

For the normal sandbox mode this will require fixing #759 however.
2016-01-04 20:01:13 +01:00
Eelco Dolstra 77ad443bd1 ~PathLocks(): Handle exceptions
Otherwise, since the call to write a "d" character to the lock file
can fail with ENOSPC, we can get an unhandled exception resulting in a
call to terminate().
2016-01-04 11:34:36 +01:00
Eelco Dolstra b8258a4475 Fix regression in passAsFile
Caused by 8063fc497a. If tmpDir !=
tmpDirInSandbox (typically when there are multiple concurrent builds
with the same name), the *Path attribute would not point to an
existing file. This caused Nixpkgs' writeTextFile to write an empty
file. In particular this showed up as hanging VM builds (because it
would run an empty run-nixos-vm script and then wait for it to finish
booting).
2015-12-29 15:28:20 +01:00
Eelco Dolstra 52120123a5 Handle /tmp being a symlink
Hopefully fixes Darwin sandbox regression introduced in
8063fc497a.
2015-12-22 17:16:17 +01:00
Eelco Dolstra f696af0fab Fix bad error message in Darwin chroots 2015-12-22 17:05:29 +01:00
Eelco Dolstra 8f67325a7c Build sandbox support etc. unconditionally on Linux
Also, use "#if __APPLE__" instead of "#if SANDBOX_ENABLED" to prevent
ambiguity.
2015-12-10 11:47:17 +01:00
Bjørn Forsman 65bd82d42a Clarify error message for hash mismatches (again)
This is arguably nitpicky, but I think this new formulation is even
clearer. My thinking is that it's easier to comprehend when the
calculated hash value is displayed close to the output path. (I think it
is somewhat similar to eliminating double negatives in logic
statements.)

The formulation is inspired / copied from the OpenEmbedded build tool,
bitbake.
2015-12-08 19:50:25 +01:00
Ludovic Courtès d1e3bf01bc daemon: Add 'buildMode' parameter to 'buildPaths' RPC 2015-12-02 18:14:49 +01:00
Eelco Dolstra 8063fc497a Use deterministic $TMPDIR in sandbox
Rather than using $<host-TMPDIR>/nix-build-<drvname>-<number>, the
temporary directory is now always /tmp/nix-build-<drvname>-0. This
improves bitwise-exact reproducibility for builds that store $TMPDIR
in their build output. (Of course, those should still be fixed...)
2015-12-02 15:04:00 +01:00
Eelco Dolstra 0ab4d905e7 Merge branch 'p/sandbox-rename-minimal' of https://github.com/vcunat/nix 2015-11-25 14:53:42 +01:00
Eelco Dolstra a0f0733413 Fix build failure introduced by #704
Also, make the FreeBSD checks conditional on FreeBSD.
2015-11-25 14:41:19 +01:00
Eelco Dolstra cad40adce5 Merge pull request #704 from ysangkok/freebsd-support
FreeBSD support with knowledge about Linux emulation
2015-11-24 19:24:21 +01:00
Jude Taylor 279fa8f618 reintroduce host deps in tandem with sandbox profiles 2015-11-21 15:57:06 -08:00
Shea Levy e0bd114e09 Revert "remove sandbox-defaults.sb"
As discussed in NixOS/nixpkgs#11001, we still need some of the old
sandbox mechanism.

This reverts commit d760c2638c.
2015-11-21 16:40:24 -05:00
Jude Taylor b9b7bb1806 re-fix permissions for GHC 2015-11-19 16:06:21 -08:00
Shea Levy 5deb7fbdfb Merge branch 'sandbox-profiles' of git://github.com/pikajude/nix
Temporarily allow derivations to describe their full sandbox profile.
This will be eventually scaled back to a more secure setup, see the
discussion at #695
2015-11-19 17:44:11 -05:00
Peter Simons 6ad10591ce src/libstore/build.cc: clarify error message for hash mismatches
Nix reports a hash mismatch saying:

  output path ‘foo’ should have sha256 hash ‘abc’, instead has ‘xyz’

That message is slightly ambiguous and some people read that statement
to mean the exact opposite of what it is supposed to mean. After this
patch, the message will be:

  Nix expects output path ‘foo’ to have sha256 hash ‘abc’, instead it has ‘xyz’
2015-11-19 12:42:37 +01:00
janus 8a74a125bc FreeBSD can build Linux 32-bit binaries 2015-11-17 14:16:08 +00:00
Shea Levy 58d2fac91d AutoDelete: Add default constructor with deletion disabled 2015-11-16 05:53:10 -05:00
Shea Levy 4390142315 Use AutoDelete for sandbox profile file 2015-11-15 06:08:50 -05:00
Jude Taylor bd09a4c967 simplify build.cc using modern C++ features 2015-11-14 14:11:03 -08:00
Jude Taylor 4876bb012e simplify build permissions 2015-11-14 14:11:03 -08:00
Jude Taylor d760c2638c remove sandbox-defaults.sb 2015-11-14 14:11:03 -08:00
Jude Taylor 8a7f0dfd68 use per-derivation sandbox profiles 2015-11-14 14:10:43 -08:00
Vladimír Čunát b39622a487 rename chroot to sandbox (fixes #656, close #682)
- rename options but leav old names as lower-priority aliases,
  also "-dirs" -> "-paths" to get closer to the meaning
- update docs to reflect the new names (old aliases are not documented),
  including a new file with release notes
- tests need an update after corresponding changes to nixpkgs
- __noChroot is left as it is (after discussion on the PR)
2015-11-10 22:32:51 +01:00
Eelco Dolstra 8fdd156a65 Add option to verify build determinism
Passing "--option build-repeat <N>" will cause every build to be
repeated N times. If the build output differs between any round, the
build is rejected, and the output paths are not registered as
valid. This is primarily useful to verify build determinism. (We
already had a --check option to repeat a previously succeeded
build. However, with --check, non-deterministic builds are registered
in the DB. Preventing that is useful for Hydra to ensure that
non-deterministic builds don't end up getting published at all.)
2015-11-09 23:16:24 +01:00
Eelco Dolstra 96c2ebf004 Revert "Allow using /bin and /usr/bin as impure prefixes on non-darwin by default"
This reverts commit 79ca503332. Ouch,
never noticed this. We definitely don't want to allow builds to have
arbitrary access to /bin and /usr/bin, because then they can (for
instance) bring in a bunch of setuid programs. Also, we shouldn't be
encouraging the use of impurities in the default configuration.
2015-11-09 21:28:38 +01:00
Eelco Dolstra 4384bbd2e1 optimizePath(): Detect some .links corruption
If automatic store optimisation is enabled, and a hard-linked file in
the store gets corrupted, then the corresponding .links entry will
also be corrupted. In that case, trying to repair with --repair or
--repair-path won't work, because the new "good" file will be replaced
by a hard link to the corrupted file. We can catch most of these cases
by doing a sanity-check on the file sizes.
2015-11-09 21:28:25 +01:00
Jude Taylor c10ef2d134 fix syntax error 2015-11-03 09:03:32 -08:00
Jude Taylor 3b52e54e31 darwin: allow reading system locale and zoneinfo 2015-11-03 08:43:09 -08:00
Jude Taylor d6bd51ffbe allow reading ICU data 2015-10-31 02:52:42 -07:00
Jude Taylor 95c66cc950 add special devices to sandbox-defaults 2015-10-30 20:32:11 -07:00
Eelco Dolstra 1f735a3440 <nix/fetchurl.nix>: Support xz-compressed NARs 2015-10-30 12:34:30 +01:00
Eelco Dolstra dae5dc7ade <nix/fetchurl.nix>: Support downloading and unpacking NARs
This removes the need to have multiple downloads in the stdenv
bootstrap process (like a separate busybox binary for Linux, or
curl/mkdir/sh/bzip2 for Darwin). Now all those files can be combined
into a single NAR.
2015-10-30 11:27:47 +01:00
Eelco Dolstra 5c28943e8f int2String() -> std::to_string() 2015-10-29 13:26:55 +01:00
Jude Taylor 9155fbd386 use nixDataDir instead of appending /share to PREFIX 2015-10-21 14:44:44 -07:00
Jude Taylor 992cda1b11 clarifying comment 2015-10-21 14:39:16 -07:00
Jude Taylor 76f3ba42fd move preBuildHook defaulting to globals.cc 2015-10-21 14:39:08 -07:00
Jude Taylor 2dc8e19a17 restore old DEFAULT_ALLOWED_IMPURE_PREFIXES 2015-10-21 14:38:49 -07:00
Jude Taylor ff6953cb03 Add resolve-system-dependencies.pl 2015-10-21 12:38:52 -07:00
Jude Taylor 15c7a79ed3 remove usr paths from allowed inputs 2015-10-21 12:38:52 -07:00
Jude Taylor 5bf4085000 allow access to SystemVersion for python builders 2015-10-21 12:38:52 -07:00
Jude Taylor 6a8cee19b3 fix line reading in preBuildHook 2015-10-21 12:38:52 -07:00
Jude Taylor 1fc0fe1baf remove sandbox defaults into a new file 2015-10-21 12:38:52 -07:00
Jude Taylor d4cac051f7 restore allowed impure prefixes 2015-10-21 12:38:52 -07:00
Jude Taylor 4b8c71b4ef remove an unneeded default impure-dep 2015-10-21 12:38:52 -07:00
Jude Taylor e770f941d6 make sandbox builds more permissive 2015-10-21 12:38:52 -07:00
Jude Taylor 1ea2aa9e99 add a few more permissions 2015-10-21 12:38:52 -07:00
Eelco Dolstra f5b32ff47d Allow builtin fetchurl regardless of the derivation's system attribute 2015-10-21 15:14:42 +02:00
Eelco Dolstra 01615b5f63 Show progress indicator for builtin fetchurl 2015-10-21 15:14:42 +02:00
Eelco Dolstra 5db358d4d7 Disable TLS verification for builtin fetchurl
This makes it consistent with the Nixpkgs fetchurl and makes it work
in chroots. We don't need verification because the hash of the result
is checked anyway.
2015-10-21 15:14:42 +02:00
Eelco Dolstra 357d31b339 Fix segfault in builtin fetchurl
The stack allocated for the builder was way too small (32 KB). This is
sufficient for normal derivations, because they just do some setup and
then exec() the actual builder. But for the fetchurl builtin
derivation it's not enough. Also, allocating the stack on the caller's
stack was fishy business.
2015-10-21 15:14:42 +02:00
Tuomas Tynkkynen 2075ec83e3 Allow building ARMv6 stuff on ARMv7
This allows building a Raspberry Pi image on modern, faster boards.
2015-10-08 13:32:28 +02:00
Eelco Dolstra 14f7e1fc42 Revert to CURLOPT_PROGRESSFUNCTION
CURLOPT_XFERINFOFUNCTION isn't widely supported yet.

http://hydra.nixos.org/build/26679495
2015-10-08 13:15:21 +02:00
Eelco Dolstra 21ecd106ed Show progress during downloads 2015-10-07 17:31:50 +02:00
Manuel Jacob cbc177ca01 Use pkg-config-provided LDFLAGS for libsqlite3 and libcurl.
Previously, pkg-config was already queried for libsqlite3's and
libcurl's link flags.  However they were not used, but hardcoded
instead.  This commit replaces the hardcoded LDFLAGS by the ones
provided by pkg-config in a similar pattern as already used for
libsodium.
2015-10-06 22:28:30 +02:00
Eelco Dolstra 1abda8e173 nix-store --serve: Implement log size limit 2015-10-06 17:33:30 +02:00
Eelco Dolstra 4ba6bc184c Shut up clang warnings 2015-09-18 01:22:35 +02:00
Eelco Dolstra 71a5161365 Implement buildDerivation() via the daemon 2015-09-03 12:56:59 +02:00
Eelco Dolstra 73332fd342 Filter build-chroot-dirs entries that conflict with derivation outputs
Fixes https://github.com/NixOS/nixpkgs/issues/9504.

Note that this means we may have a non-functional /bin/sh in the
chroot while rebuilding Bash or one of its dependencies. Ideally those
packages don't rely on /bin/sh though.
2015-09-02 14:54:12 +02:00
Eelco Dolstra d711fe8f5e Remove unused variable 2015-09-02 14:46:04 +02:00
Eelco Dolstra e12cf82782 Prevent .chroot from being GC'ed when using LocalStore::buildDerivation()
Fixes #616.
2015-08-24 11:13:31 +02:00
Eelco Dolstra eadb86f447 nix-collect-garbage: Revive --max-freed
Fixes #609.
2015-08-21 13:57:53 +02:00
Manolis Ragkousis 26221e44eb Remove unneeded HAVE_UNSHARE.
* src/libstore/build.cc (CHROOT_ENABLED): Remove HAVE_UNSHARE.
2015-08-19 14:11:15 +03:00
Eelco Dolstra 34dfbd9394 Don't include <iostream> before config.h
This breaks the build on 32-bit systems.

http://hydra.nixos.org/build/24373658
2015-08-04 11:12:31 +02:00
Eelco Dolstra 30d19a2bdc Handle debug messages from runChild()
Turns out that "nix-build -vvv" with chroots enabled has been broken
for some time, because some debug message got interpreted as an error.
2015-08-03 18:04:32 +02:00
Eelco Dolstra f3dda728a4 Remove unnecessary parentheses 2015-07-26 12:07:14 +02:00
Eelco Dolstra 16c9935fa9 Fix fetchurl of executable file
Pointed out by @cstrahan, thanks!
2015-07-23 22:25:04 +02:00
Eelco Dolstra 1993b10d11 Fix Darwin build
Turns out getgrouplist() is not POSIX.

http://hydra.nixos.org/build/23881243
2015-07-21 14:45:24 +02:00
Eelco Dolstra 0a2bee307b Make <nix/fetchurl.nix> a builtin builder
This ensures that 1) the derivation doesn't change when Nix changes;
2) the derivation closure doesn't contain Nix and its dependencies; 3)
we don't have to rely on ugly chroot hacks.
2015-07-20 04:38:46 +02:00
Eelco Dolstra eda2f36c2a Provide more detailed info about build status to hydra-queue-runner
In particular, hydra-queue-runner can now distinguish between remote
build / substitution / already-valid. For instance, if a path already
existed on the remote side, we don't want to store a log file.
2015-07-20 03:20:03 +02:00
Eelco Dolstra ccf31dbc25 nix-copy-closure: Add -v flag
And make exportPath() less spammy by default.
2015-07-20 01:52:07 +02:00
Eelco Dolstra b3491c781c More cleanup 2015-07-20 01:16:16 +02:00
Eelco Dolstra 6bd2c7bb38 OCD: foreach -> C++11 ranged for 2015-07-17 20:13:56 +02:00
Eelco Dolstra 1511aa9f48 Allow remote builds without sending the derivation closure
Previously, to build a derivation remotely, we had to copy the entire
closure of the .drv file to the remote machine, even though we only
need the top-level derivation. This is very wasteful: the closure can
contain thousands of store paths, and in some Hydra use cases, include
source paths that are very large (e.g. Git/Mercurial checkouts).

So now there is a new operation, StoreAPI::buildDerivation(), that
performs a build from an in-memory representation of a derivation
(BasicDerivation) rather than from a on-disk .drv file. The only files
that need to be in the Nix store are the sources of the derivation
(drv.inputSrcs), and the needed output paths of the dependencies (as
described by drv.inputDrvs). "nix-store --serve" exposes this
interface.

Note that this is a privileged operation, because you can construct a
derivation that builds any store path whatsoever. Fixing this will
require changing the hashing scheme (i.e., the output paths should be
computed from the other fields in BasicDerivation, allowing them to be
verified without access to other derivations). However, this would be
quite nice because it would allow .drv-free building (e.g. "nix-env
-i" wouldn't have to write any .drv files to disk).

Fixes #173.
2015-07-17 17:57:40 +02:00
Eelco Dolstra dd48c06bb6 Typo 2015-07-02 00:30:16 +02:00
Ludovic Courtès 9aed117395 Preserve supplementary groups of build users
The following patch is an attempt to address this bug (see
<http://bugs.gnu.org/18994>) by preserving the supplementary groups of
build users in the build environment.

In practice, I would expect that supplementary groups would contain only
one or two groups: the build users group, and possibly the “kvm” group.

[Changed &at(0) to data() and removed tabs - Eelco]
2015-07-01 14:57:48 +02:00
Eelco Dolstra ff4de4cb27 GC: Handle ENOSPC creating/moving to the trash directory
Issue #564.
2015-06-30 21:41:26 +02:00
Eelco Dolstra 2bc9c84327 Use posix_fallocate to create /nix/var/nix/db/reserved 2015-06-22 15:54:55 +02:00
Eelco Dolstra ba63ec6f39 Make /nix/var/nix/db/reserved bigger
Issue #564.
2015-06-22 15:47:40 +02:00
Eelco Dolstra b65875f859 Export outputPaths function
This is useful for the new hydra-queue-runner.
2015-06-10 16:17:06 +02:00
Eelco Dolstra 7c4501886d Use std::vector::data() 2015-06-09 10:54:46 +02:00
Eelco Dolstra b64988bb35 Allow substitutes for builds that have preferLocalBuild set
Not substituting builds with "preferLocalBuild = true" was a bad idea,
because it didn't take the cost of dependencies into account. For
instance, if we can't substitute a fetchgit call, then we have to
download/build git and all its dependencies.

Partially reverts 5558652709 and adds a
new derivation attribute "allowSubstitutes" to specify whether a
derivation may be substituted.
2015-06-04 16:30:22 +02:00
Eelco Dolstra 07d7e7df84 Chown files created for passAsFile
Nixpkgs' writeTextAsFile does this:

  mv "$textPath" "$n"

Since $textPath was owned by root, if $textPath is on the same
filesystem as $n, $n will be owned as root. As a result, the build
result was rejected as having suspicious ownership.

http://hydra.nixos.org/build/22836807
2015-06-04 14:07:43 +02:00
Ludovic Courtès b755752f76 Add a ‘verifyStore’ RPC
Hello!

The patch below adds a ‘verifyStore’ RPC with the same signature as the
current LocalStore::verifyStore method.

Thanks,
Ludo’.

>From aef46c03ca77eb6344f4892672eb6d9d06432041 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ludovic=20Court=C3=A8s?= <ludo@gnu.org>
Date: Mon, 1 Jun 2015 23:17:10 +0200
Subject: [PATCH] Add a 'verifyStore' remote procedure call.
2015-06-02 02:14:24 +02:00
Eelco Dolstra 4ca5a9dcfd nix-collect-garbage: Don't call nix-env
Also, make sure --delete-older-than doesn't delete the current
generation.
2015-05-21 16:28:30 +02:00
Eelco Dolstra 22b1a8d43f Move profiles.{cc,hh} to libstore 2015-05-21 15:42:59 +02:00
Rok Garbas 000de699e9 cygwin: explicitly include required c headers 2015-05-13 09:37:12 +02:00
Shea Levy 71083f9e5e Don't try to map /bin/sh to a store path on non-Linux 2015-05-12 16:36:15 -04:00
Shea Levy 4d652875bd Add the pre-build hook.
This hook can be used to set system-specific per-derivation build
settings that don't fit into the derivation model and are too complex or
volatile to be hard-coded into nix. Currently, the pre-build hook can
only add chroot dirs/files through the interface, but it also has full
access to the chroot root.

The specific use case for this is systems where the operating system ABI
is more complex than just the kernel-support system calls. For example,
on OS X there is a set of system-provided frameworks that can reliably
be accessed by any program linked to them, no matter the version the
program is running on. Unfortunately, those frameworks do not
necessarily live in the same locations on each version of OS X, nor do
their dependencies, and thus nix needs to know the specific version of
OS X currently running in order to make those frameworks available. The
pre-build hook is a perfect mechanism for doing just that.
2015-04-18 16:56:02 -04:00
Shea Levy fd6774e285 Revert "Add the pre-build hook."
Going to reimplement differently.

This reverts commit 1e4a4a2e9f.
2015-04-18 14:59:58 -04:00
Eelco Dolstra 035aeb9547 Fix using restricted mode with chroots 2015-04-16 18:46:17 +02:00
Shea Levy 1e4a4a2e9f Add the pre-build hook.
This hook can be used to set system specific per-derivation build
settings that don't fit into the derivation model and are too complex or
volatile to be hard-coded into nix. Currently, the pre-build hook can
only add chroot dirs/files.

The specific use case for this is systems where the operating system ABI
is more complex than just the kernel-supported system calls. For
example, on OS X there is a set of system-provided frameworks that can
reliably be accessed by any program linked to them, no matter the
version the program is running on. Unfortunately, those frameworks do
not necessarily live in the same locations on each version of OS X, nor
do their dependencies, and thus nix needs to know the specific version
of OS X currently running in order to make those frameworks available.
The pre-build hook is a perfect mechanism for doing just that.
2015-04-12 12:56:38 -04:00
Eelco Dolstra c1f04fae35 Implement a TTL on cached fetchurl/fetchTarball results
This is because we don't want to do HTTP requests on every evaluation,
even though we can prevent a full redownload via the cached ETag. The
default is one hour.
2015-04-09 11:55:36 +02:00
Eelco Dolstra 1711679ea5 Revert /nix/store permission back to 01775
This broke NixOS VM tests.

Mostly reverts 27b7b94923,
5ce50cd99e,
afa433e58c.
2015-04-07 13:21:26 +02:00
Eelco Dolstra afa433e58c Chroot builds: Provide world-readable /nix/store
This was causing NixOS VM tests to fail mysteriously since
5ce50cd99e. Nscd could (sometimes) no
longer read /etc/hosts:

open("/etc/hosts", O_RDONLY|O_CLOEXEC) = -1 EACCES (Permission denied)

Probably there was some wacky interaction between the guest kernel and
the 9pfs implementation in QEMU.
2015-04-02 16:59:40 +02:00
Eelco Dolstra 7ea6ecf855 addToStore(): Take explicit name argument 2015-03-25 17:06:12 +01:00
Eelco Dolstra 5114a07d95 Improve setting the default chroot dirs 2015-03-24 11:57:46 +01:00
Eelco Dolstra fd89f97be9 Add the closure of store paths to the chroot
Thus, for example, to get /bin/sh in a chroot, you only need to
specify /bin/sh=${pkgs.bash}/bin/sh in build-chroot-dirs. The
dependencies of sh will be added automatically.
2015-03-24 11:52:34 +01:00
Eelco Dolstra 5ce50cd99e Tighten permissions on chroot directories 2015-03-24 11:35:53 +01:00
Daniel Hahler e659978ced Fix typos: s/the the/the/ 2015-03-06 16:43:22 +01:00
Eelco Dolstra 75ede65e3d Don't use vfork() before clone()
I'm seeing hangs in Glibc's setxid_mark_thread() again. This is
probably because the use of an intermediate process to make clone()
safe from a multi-threaded program (see
524f89f139) is defeated by the use of
vfork(), since the intermediate process will have a copy of Glibc's
threading data structures due to the vfork(). So use a regular fork()
again.
2015-03-04 15:13:10 +01:00
Shea Levy c2699be93b Merge branch 'allow-system-library' of git://github.com/copumpkin/nix
Make the default impure prefix include all of /System/Library
2015-03-03 15:01:09 -05:00
Dan Peebles 336c4270c6 Make the default impure prefix (not actual allowed impurities!) include all of /System/Library, since we also want PrivateFrameworks from there and (briefly) TextEncodings, and who knows what else. Yay infectious impurities? 2015-03-02 23:01:24 -05:00
Dan Peebles 66d612f1da Allow local networking in the darwin sandbox to appease tests 2015-03-02 22:55:42 -05:00
Eelco Dolstra 885bebf13b More graceful fallback for chroots on Linux < 2.13 2015-02-23 15:54:31 +01:00
Eelco Dolstra 99897f6979 Use chroots for all derivations
If ‘build-use-chroot’ is set to ‘true’, fixed-output derivations are
now also chrooted. However, unlike normal derivations, they don't get
a private network namespace, so they can still access the
network. Also, the use of the ‘__noChroot’ derivation attribute is
no longer allowed.

Setting ‘build-use-chroot’ to ‘relaxed’ gives the old behaviour.
2015-02-23 15:54:31 +01:00
Eelco Dolstra bd91064150 Use $<attr>Path instead of $<attr> for passAsFile 2015-02-17 16:42:54 +01:00
Eelco Dolstra a70d275f3d Allow passing attributes via files instead of environment variables
Closes #473.
2015-02-17 14:42:15 +01:00
Harald van Dijk 5451b8db9d Use pivot_root in addition to chroot when possible
chroot only changes the process root directory, not the mount namespace root
directory, and it is well-known that any process with chroot capability can
break out of a chroot "jail". By using pivot_root as well, and unmounting the
original mount namespace root directory, breaking out becomes impossible.

Non-root processes typically have no ability to use chroot() anyway, but they
can gain that capability through the use of clone() or unshare(). For security
reasons, these syscalls are limited in functionality when used inside a normal
chroot environment. Using pivot_root() this way does allow those syscalls to be
put to their full use.
2015-02-16 12:18:19 +01:00
Shea Levy d66d9e8425 Require linux 3.13 or later for chroot
Fixes #453
2015-02-04 18:15:56 +01:00
Daniel Peebles f46e329a13 Make inputs writeable in the sandbox (builds still can’t actually write due to user permissions) 2015-01-18 23:25:29 -05:00
Shea Levy 79ca503332 Allow using /bin and /usr/bin as impure prefixes on non-darwin by default
These directories are generally world-readable anyway, and give us the two
most common linux impurities (env and sh)
2015-01-13 15:41:46 +01:00
Eelco Dolstra fcf57aad27 SysError -> Error 2015-01-13 11:17:56 +01:00
Eelco Dolstra 100961e370 Don't resolve symlinks while checking __impureHostDeps
Since these come from untrusted users, we shouldn't do any I/O on them
before we've checked that they're in an allowed prefix.
2015-01-13 11:16:32 +01:00
Daniel Peebles f1151a3373 Add basic Apple sandbox support 2015-01-12 12:00:01 +01:00
Eelco Dolstra 57d64d24aa Doh^2 2015-01-08 16:59:22 +01:00
Eelco Dolstra 57b82256b0 Doh 2015-01-08 16:49:31 +01:00
Eelco Dolstra 27b7b94923 Set /nix/store permission to 1737
I.e., not readable to the nixbld group. This improves purity a bit for
non-chroot builds, because it prevents a builder from enumerating
store paths (i.e. it can only access paths it knows about).
2015-01-08 16:39:07 +01:00
Eelco Dolstra df05f49dcd Fix building on Darwin
Fixes #433.
2015-01-06 10:49:44 +01:00
Shea Levy 3d97b8d1e7 LocalStore initialization: Don't die if build-users-group doesn't exist
See NixOS/nixpkgs@9245516
2014-12-29 14:40:13 +01:00
Eelco Dolstra bd0f362d2f Revive running builds in a PID namespace 2014-12-23 17:25:06 +01:00
Eelco Dolstra 4e0607369e Pedantry 2014-12-14 01:51:14 +01:00
Eelco Dolstra 8bdff8c100 Merge branch 'cygwin-master' of https://github.com/ternaris/nix 2014-12-14 01:49:14 +01:00
Eelco Dolstra fa2063ca35 Better error message 2014-12-13 16:54:40 +01:00
Eelco Dolstra b77037b8fd Silence some warnings on GCC 4.9 2014-12-12 17:14:28 +01:00
Eelco Dolstra 46f3eb6fdd Shut up a Valgrind warning 2014-12-12 15:10:02 +01:00
Eelco Dolstra f52b6c944e Fix some memory leaks 2014-12-12 15:01:16 +01:00
Eelco Dolstra 28f22b4653 Ensure we're writing to stderr in the builder
http://hydra.nixos.org/build/17862041
2014-12-12 14:35:44 +01:00
Eelco Dolstra 4acca1a5b9 Remove chatty message
This broke building with "-vv", because the builder is not allowed to
write to stderr at this point.
2014-12-12 13:43:59 +01:00
Eelco Dolstra ad790022fd Doh 2014-12-12 13:41:00 +01:00
Eelco Dolstra 851b47bd7d Don't do vfork in conjunction with setuid 2014-12-10 18:01:01 +01:00
Eelco Dolstra b5ed5b6e66 Rename function 2014-12-10 17:25:38 +01:00
Eelco Dolstra e529823635 Don't wait for PID -1
The pid field can be -1 if forking the substituter process failed.
2014-12-10 13:53:04 +01:00
Marko Durkovic 629e8da3aa Explicitly include required C headers 2014-12-09 13:00:59 +01:00
Eelco Dolstra b7b6e3ddec Build derivations in a more predictable order
Derivations are now built in order of derivation name, so a package
named "aardvark" is built before "baboon".

Fixes #399.
2014-11-24 16:50:46 +01:00
Eelco Dolstra 9e3389c337 Don't create unnecessary substitution goals for derivations 2014-11-24 16:50:46 +01:00
Eelco Dolstra 8299aaf079 Disable vacuuming the DB after garbage collection
Especially in WAL mode on a highly loaded machine, this is not a good
idea because it results in a WAL file of approximately the same size
ad the database, which apparently cannot be deleted while anybody is
accessing it.
2014-11-19 18:14:24 +01:00
Eelco Dolstra 1256ab3b44 Clean up temp roots in a more C++ way 2014-11-19 17:07:29 +01:00
Eelco Dolstra 35aad73bb6 Fix message 2014-11-17 01:00:39 +01:00
Eelco Dolstra 8cfe939b0f Don't use ADDR_LIMIT_3GB
This gives 32-bit builds on x86_64-linux more memory.
2014-11-14 14:16:20 +01:00
Eelco Dolstra bab8d9b52a Make ~DerivationGoal more reliable 2014-11-12 11:35:53 +01:00
Eelco Dolstra 06a86aee15 nix-store --gc: Don't warn about missing manifests directory 2014-11-04 10:41:29 +01:00
Eelco Dolstra e389f4ea55 Improve error message if the daemon worker fails to start 2014-10-31 09:36:09 +01:00
Eelco Dolstra 11aef17a77 Remove comments claiming we use a private PID namespace
This is no longer the case since
524f89f139.
2014-10-29 15:49:34 +01:00
Eelco Dolstra 2a4dbcff74 Improved error message when encountering unsupported file types
Fixes #269.
2014-10-14 10:51:19 +02:00
Eelco Dolstra 3f8576a6ab Remove some duplicate code 2014-10-03 22:37:51 +02:00
Eelco Dolstra d4a71ec3bf Update spec file
http://hydra.nixos.org/build/14344391
2014-09-18 15:42:01 +02:00
Eelco Dolstra 8be9990cdb Install some pkgconfig files 2014-09-18 12:00:40 +02:00
Eelco Dolstra d98bfcbf81 On Linux, disable address space randomization 2014-09-17 17:21:13 +02:00
Eelco Dolstra d37d012774 Settings: Add bool get() 2014-09-17 15:18:13 +02:00
Ludovic Courtès 8fb8c26b6d Add an 'optimiseStore' remote procedure call. 2014-09-01 23:53:26 +02:00
Eelco Dolstra b72e93bca8 Add disallowedReferences / disallowedRequisites
For the "stdenv accidentally referring to bootstrap-tools", it seems
easier to specify the path that we don't want to depend on, e.g.

  disallowedRequisites = [ bootstrapTools ];
2014-08-28 18:57:13 +02:00
Gergely Risko fd61069a42 Introduce allowedRequisites feature 2014-08-28 18:23:55 +02:00
Joel Taylor b224ac1520 fix disappearing bash arguments 2014-08-21 23:17:50 +02:00
Eelco Dolstra 524f89f139 Use unshare() instead of clone()
It turns out that using clone() to start a child process is unsafe in
a multithreaded program. It can cause the initialisation of a build
child process to hang in setgroups(), as seen several times in the
build farm:

The reason is that Glibc thinks that the other threads of the parent
exist in the child, so in setxid_mark_thread() it tries to get a futex
that has been acquired by another thread just before the clone(). With
fork(), Glibc runs pthread_atfork() handlers that take care of this
(in particular, __reclaim_stacks()). But clone() doesn't do that.

Fortunately, we can use fork()+unshare() instead of clone() to set up
private namespaces.

See also https://www.mail-archive.com/lxc-devel@lists.linuxcontainers.org/msg03434.html.
2014-08-21 14:08:09 +02:00
Eelco Dolstra 11849a320e Use proper quotes everywhere 2014-08-20 18:03:48 +02:00
Eelco Dolstra 373fad75e1 Add some color 2014-08-20 16:50:17 +02:00
Eelco Dolstra 954188af27 Filter Nix-specific ANSI escape sequences from stderr
The Nixpkgs stdenv prints some custom escape sequences to denote
nesting and stuff like that. Most terminals (e.g. xterm, konsole)
ignore them, but some do not (e.g. xfce4-terminal). So for the benefit
of the latter, filter them out.
2014-08-20 14:30:01 +02:00
Eelco Dolstra 029424d17d Make hook shutdown more reliable 2014-08-19 17:47:30 +02:00
Eelco Dolstra 632f989b51 Doh 2014-08-18 11:35:50 +02:00
Eelco Dolstra c160ead82f Reduce verbosity 2014-08-17 19:11:50 +02:00
Eelco Dolstra 42e9ad8fd1 Propagate remote timeouts properly 2014-08-17 19:09:03 +02:00
Eelco Dolstra 9367046fef Use regular file GC roots if possible
This makes hydra-eval-jobs create roots as regular files. See
1c208f2b7e.
2014-08-13 17:44:41 +02:00
Eelco Dolstra 98873ff7de Remove unnecessary call to addTempRoot() 2014-08-05 16:41:42 +02:00
Eelco Dolstra f02c52e3d4 Doh 2014-08-05 10:19:57 +02:00
Eelco Dolstra 988bf59421 Move some options out of globals 2014-08-04 18:13:14 +02:00
Eelco Dolstra daccd68999 Refactor 2014-08-04 18:02:29 +02:00
Eelco Dolstra d5a076c36f Add option ‘build-extra-chroot-dirs’
This is useful for extending (rather than overriding) the default set
of chroot paths.
2014-08-04 18:00:00 +02:00
Eelco Dolstra 4d73e2e893 Get rid of "killing <pid>" message for unused build hooks 2014-08-04 17:27:45 +02:00
Eelco Dolstra bb45092f72 Make chroot builds easier to set up
By default, we now include /bin/sh as a bind-mount of bash.
2014-08-04 17:09:26 +02:00
Eelco Dolstra 51485dcda2 Remove ugly hack for detecting build environment setup errors 2014-08-01 19:38:21 +02:00
Eelco Dolstra 4c4b219c07 Call commonChildInit() before doing chroot init
This ensures that daemon clients see error messages from the chroot
setup.
2014-08-01 19:29:03 +02:00
Eelco Dolstra e0d7d0e45c findRoots(): Prevent a call to lstat()
This means that getting the roots from /nix/var/nix/.../hydra-roots
doesn't need any I/O other than reading the directory.
2014-08-01 17:20:25 +02:00
Eelco Dolstra daf3f2c11f Make readDirectory() return inode / file type 2014-08-01 17:14:28 +02:00
Eelco Dolstra 1c208f2b7e Allow regular files as GC roots
If a root is a regular file, then its name must denote a store
path. For instance, the existence of the file

  /nix/var/nix/gcroots/per-user/eelco/hydra-roots/wzc3cy1wwwd6d0dgxpa77ijr1yp50s6v-libxml2-2.7.7

would cause

  /nix/store/wzc3cy1wwwd6d0dgxpa77ijr1yp50s6v-libxml2-2.7.7

to be a root.

This is useful because it involves less I/O (no need for a readlink()
call) and takes up less disk space (the symlink target typically takes
up a full disk block, while directory entries are packed more
efficiently). This is particularly important for hydra.nixos.org,
which has hundreds of thousands of roots, and where reading the roots
can take 25 minutes.
2014-08-01 17:14:28 +02:00
Eelco Dolstra 50dc1f5b71 Restore default SIGPIPE handler before invoking ‘man’
Fixes NixOS/nixpkgs#3410.
2014-07-31 10:31:17 +02:00
Eelco Dolstra 67937907ca nix-daemon: Pass on the user's $SSH_AUTH_SOCK to the SSH substituter 2014-07-25 18:02:48 +02:00
Eelco Dolstra 71a20d4d95 Change the default for use-ssh-substituter to ‘true’
Now you only have to pass ‘--option ssh-substituter-hosts
nix-ssh@bla’ to enable SSH substitution.
2014-07-25 12:57:12 +02:00
Eelco Dolstra d3c61d83be Remove some dead code 2014-07-24 00:00:53 +02:00
Eelco Dolstra 5989966ed3 Remove dead code 2014-07-23 14:46:28 +02:00
Eelco Dolstra ee3c5d7916 Revert old useBuildHook behaviour 2014-07-19 02:25:47 +02:00
Eelco Dolstra 049c0eb49c nix-daemon: Add trusted-users and allowed-users options
‘trusted-users’ is a list of users and groups that have elevated
rights, such as the ability to specify binary caches. It defaults to
‘root’. A typical value would be ‘@wheel’ to specify all users in the
wheel group.

‘allowed-users’ is a list of users and groups that are allowed to
connect to the daemon. It defaults to ‘*’. A typical value would be
‘@users’ to specify the ‘users’ group.
2014-07-17 16:57:07 +02:00
Eelco Dolstra 276a40b31f Handle case collisions on case-insensitive systems
When running NixOps under Mac OS X, we need to be able to import store
paths built on Linux into the local Nix store. However, HFS+ is
usually case-insensitive, so if there are directories with file names
that differ only in case, then importing will fail.

The solution is to add a suffix ("~nix~case~hack~<integer>") to
colliding files. For instance, if we have a directory containing
xt_CONNMARK.h and xt_connmark.h, then the latter will be renamed to
"xt_connmark.h~nix~case~hack~1". If a store path is dumped as a NAR,
the suffixes are removed. Thus, importing and exporting via a
case-insensitive Nix store is round-tripping. So when NixOps calls
nix-copy-closure to copy the path to a Linux machine, you get the
original file names back.

Closes #119.
2014-07-16 16:02:05 +02:00
Eelco Dolstra fa13d3f4f3 build-remote.pl: Fix building multiple output derivations
We were importing paths without sorting them topologically, leading to
"path is not valid" errors.

See e.g. http://hydra.nixos.org/build/12451761
2014-07-14 12:19:27 +02:00
Eelco Dolstra a5c6347ff0 build-remote.pl: Use ‘nix-store --serve’ on the remote side
This makes things more efficient (we don't need to use an SSH master
connection, and we only start a single remote process) and gets rid of
locking issues (the remote nix-store process will keep inputs and
outputs locked as long as they're needed).

It also makes it more or less secure to connect directly to the root
account on the build machine, using a forced command
(e.g. ‘command="nix-store --serve --write"’). This bypasses the Nix
daemon and is therefore more efficient.

Also, don't call nix-store to import the output paths.
2014-07-11 16:22:24 +02:00
Eelco Dolstra e196eecbe6 Allow $NIX_BUILD_HOOK to be relative to Nix libexec directory 2014-07-11 13:55:06 +02:00
Eelco Dolstra edbfe2232e Replace message "importing path <...>" with "exporting path <...>"
This causes nix-copy-closure to show what it's doing before rather
than after.
2014-07-10 21:30:22 +02:00
Eelco Dolstra 43b64f5038 Remove tabs 2014-07-10 17:32:21 +02:00
Eelco Dolstra 8e9140cfde Refactoring: Move all fork handling into a higher-order function
C++11 lambdas ftw.
2014-07-10 16:58:09 +02:00
Eelco Dolstra 7911e4c27a Remove maybeVfork 2014-07-10 13:35:44 +02:00
Eelco Dolstra 8504e7d604 allow-arbitrary-code-during-evaluation -> allow-unsafe-native-code-during-evaluation 2014-06-27 11:20:16 +02:00
Shea Levy d62f46e500 Only add the importNative primop if the allow-arbitrary-code-during-evaluation option is true (default false) 2014-06-24 10:50:03 -04:00
Eelco Dolstra b1beed97a0 Report daemon OOM better
When copying a large path causes the daemon to run out of memory, you
now get:

  error: Nix daemon out of memory

instead of:

  error: writing to file: Broken pipe
2014-06-10 13:45:50 +02:00
Eelco Dolstra 829af22759 Print a warning when loading a large path into memory
I.e. if you have a derivation with

  src = ./huge-directory;

you'll get a warning that this is not a good idea.
2014-06-10 13:30:09 +02:00
Eelco Dolstra 54a34119f3 Use std::unordered_set 2014-05-26 17:53:17 +02:00
Eelco Dolstra 9f9080e2c0 nix-store -l: Fetch build logs from the Internet
If a build log is not available locally, then ‘nix-store -l’ will now
try to download it from the servers listed in the ‘log-servers’ option
in nix.conf. For instance, if you have:

  log-servers = http://hydra.nixos.org/log

then it will try to get logs from http://hydra.nixos.org/log/<base
name of the store path>. So you can do things like:

  $ nix-store -l $(which xterm)

and get a log even if xterm wasn't built locally.
2014-05-21 17:19:36 +02:00
Eelco Dolstra 8d5f472f2c lvlInfo -> lvlTalkative 2014-05-15 11:37:44 +02:00
Eelco Dolstra 84813af5b9 nix-store --optimise: Remove bogus statistics 2014-05-15 11:33:46 +02:00
Eelco Dolstra 690adeb03d Remove tab 2014-05-15 11:19:16 +02:00
Wout Mertens 3b9ea8452f Shortcut store files before lstat
readdir() already returns the inode numbers, so we don't need to call
lstat to know if a file was already linked or not.
2014-05-15 09:02:22 +02:00
Wout Mertens d73ffc552f Use the inodes given by readdir directly 2014-05-14 22:52:10 +02:00
Wout Mertens e974f20c98 Preload linked hashes to speed up lookups
By preloading all inodes in the /nix/store/.links directory, we can
quickly determine of a hardlinked file was already linked to the hashed
links.
This is tolerant of removing the .links directory, it will simply
recalculate all hashes in the store.
2014-05-13 23:10:06 +02:00
wmertens a84f503d86 Shortcut already-hardlinked files
If an inode in the Nix store has more than 1 link, it probably means that it was linked into .links/ by us. If so, skip.

There's a possibility that something else hardlinked the file, so it would be nice to be able to override this.

Also, by looking at the number of hardlinks for each of the files in .links/, you can get deduplication numbers and space savings.
2014-05-10 15:53:01 +02:00
Eelco Dolstra 696f960dee Set up directories and permissions for multi-user install automatically
This automatically creates /nix/var/nix/profiles/per-user and sets the
permissions/ownership on /nix/store to 1775 and root:nixbld.
2014-05-02 14:31:15 +02:00
Eelco Dolstra de4cdd0d47 Set build-max-jobs to the number of available cores by default
More zero configuration.
2014-05-02 12:51:43 +02:00
Eelco Dolstra ada3e3fa15 When running as root, use build users by default
This removes the need to have a nix.conf, and prevents people from
accidentally running Nix builds as root.
2014-05-02 12:46:03 +02:00
Eelco Dolstra dfa2f77d2e If a .drv cannot be parsed, show its path
Otherwise you just get ‘expected string `Derive(['’ which isn't very helpful.
2014-04-08 19:24:29 +02:00
Danny Wilson ae6b631dc4 Fix compile errors on Illumos 2014-04-03 17:39:57 +02:00
Ludovic Courtès e7720aa10a Make sure /dev/pts/ptmx is world-writable
While running Python 3’s test suite, we noticed that on some systems
/dev/pts/ptmx is created with permissions 0 (that’s the case with my
Nixpkgs-originating 3.0.43 kernel, but someone with a Debian-originating
3.10-3 reported not having this problem.)

There’s still the problem that people without
CONFIG_DEVPTS_MULTIPLE_INSTANCES=y are screwed (as noted in build.cc),
but I don’t see how we could work around it.
2014-04-03 13:42:45 +02:00
Eelco Dolstra 1c2550a2ae boost::shared_ptr -> std::shared_ptr 2014-03-30 00:49:23 +01:00
Eelco Dolstra acb8facbbc Fix potential segfault in waitForInput()
Since the addition of build-max-log-size, a call to
handleChildOutput() can result in cancellation of a goal.  This
invalidated the "j" iterator in the waitForInput() loop, even though
it was still used afterwards.  Likewise for the maxSilentTime
handling.

Probably fixes #231.  At least it gets rid of the valgrind warnings.
2014-03-29 22:14:11 +01:00
Eelco Dolstra 90dc50b07c restoreSIGPIPE(): Fill in sa_mask
Issue #231.
2014-03-29 20:20:14 +01:00
Ludovic Courtès 24cb65efc3 Make /dev/kvm optional
The daemon now creates /dev deterministically (thanks!).  However, it
expects /dev/kvm to be present.

The patch below restricts that requirement (1) to Linux-based systems,
and (2) to systems where /dev/kvm already exists.

I’m not sure about the way to handle (2).  We could special-case
/dev/kvm and create it (instead of bind-mounting it) in the chroot, so
it’s always available; however, it wouldn’t help much since most likely,
if /dev/kvm missing, then KVM support is missing.
2014-03-21 17:27:19 +01:00
Eelco Dolstra 1017bd68ea Set up a private /dev/pts in the chroot 2014-02-27 23:35:23 +01:00
Eelco Dolstra 3fd01b171a Set up a minimal /dev in chroots
Not bind-mounting the /dev from the host also solves the problem with
/dev/shm being a symlink to something not in the chroot.
2014-02-27 23:17:53 +01:00
Eelco Dolstra 29cde917fe Fix deadlock in SubstitutionGoal
We were relying on SubstitutionGoal's destructor releasing the lock,
but if a goal is a top-level goal, the destructor won't run in a
timely manner since its reference count won't drop to zero.  So
release it explicitly.

Fixes #178.
2014-02-27 13:34:13 +01:00
Eelco Dolstra dcaea042fc Only start download-via-ssh if it's enabled 2014-02-26 13:41:03 +01:00
Shea Levy df5de9dfd7 Add use-ssh-substituter setting.
It defaults to false and can be overridden by RemoteStore.

Untested currently, just quickly put this together
2014-02-26 13:32:47 +01:00
Eelco Dolstra 8129cf33d9 Slight simplification 2014-02-18 10:46:30 +01:00
Eelco Dolstra 1aa19b24b2 Add a flag ‘--check’ to verify build determinism
The flag ‘--check’ to ‘nix-store -r’ or ‘nix-build’ will cause Nix to
redo the build of a derivation whose output paths are already valid.
If the new output differs from the original output, an error is
printed.  This makes it easier to test if a build is deterministic.
(Obviously this cannot catch all sources of non-determinism, but it
catches the most common one, namely the current time.)

For example:

  $ nix-build '<nixpkgs>' -A patchelf
  ...
  $ nix-build '<nixpkgs>' -A patchelf --check
  error: derivation `/nix/store/1ipvxsdnbhl1rw6siz6x92s7sc8nwkkb-patchelf-0.6' may not be deterministic: hash mismatch in output `/nix/store/4pc1dmw5xkwmc6q3gdc9i5nbjl4dkjpp-patchelf-0.6.drv'

The --check build fails if not all outputs are valid.  Thus the first
call to nix-build is necessary to ensure that all outputs are valid.

The current outputs are left untouched: the new outputs are either put
in a chroot or diverted to a different location in the store using
hash rewriting.
2014-02-18 01:01:14 +01:00
Eelco Dolstra b6def5b542 Make --repair work on Darwin
Mac OS X doesn't allow renaming a read-only directory.

http://hydra.nixos.org/build/9113895
2014-02-17 23:09:48 +01:00
Eelco Dolstra dfbcb7c403 Refactoring 2014-02-17 23:04:52 +01:00
Eelco Dolstra 71adb090f0 When using a build hook, only copy missing paths 2014-02-17 22:58:21 +01:00
Eelco Dolstra 69fe6c58fa Move some code around
In particular, do replacing of valid paths during repair later.  This
prevents us from replacing a valid path after the build fails.
2014-02-17 22:25:15 +01:00
Eelco Dolstra 00d30496ca Heuristically detect if a build may have failed due to a full disk
This will allow Hydra to detect that a build should not be marked as
"permanently failed", allowing it to be retried later.
2014-02-17 14:15:56 +01:00
Eelco Dolstra dba33d4018 Minor style fixes 2014-02-14 11:48:42 +01:00
Shea Levy 38c3beac1a Move StoreApi::serve into opServe
Signed-off-by: Shea Levy <shea@shealevy.com>
2014-02-10 06:52:48 -05:00
Shea Levy 1614603165 Pass in params by const ref
Signed-off-by: Shea Levy <shea@shealevy.com>
2014-02-10 06:49:37 -05:00
Shea Levy 64e23d0a38 Add download-via-ssh substituter
This substituter connects to a remote host, runs nix-store --serve
there, and then forwards substituter commands on to the remote host and
sends their results to the calling program. The ssh-substituter-hosts
option can be specified as a list of hosts to try.

This is an initial implementation and, while it works, it has some
limitations:

* Only the first host is used
* There is no caching of query results (all queries are sent to the
  remote machine)
* There is no informative output (such as progress bars)
* Some failure modes may cause unhelpful error messages
* There is no concept of trusted-ssh-substituter-hosts

Signed-off-by: Shea Levy <shea@shealevy.com>
2014-02-08 00:13:33 -05:00
Shea Levy 5671188eb2 nix-store --serve: Flush out after every loop
Signed-off-by: Shea Levy <shea@shealevy.com>
2014-02-08 00:13:33 -05:00
Shea Levy 73874629ef nix-store --serve: Use dump instead of export
Also remove signing support

Signed-off-by: Shea Levy <shea@shealevy.com>
2014-02-08 00:13:33 -05:00
Shea Levy 188f96500b nix-store --serve: Don't fail if asked for info about non-valid path
Signed-off-by: Shea Levy <shea@shealevy.com>
2014-02-08 00:13:33 -05:00
Shea Levy 9488447594 nix-store --serve: Don't loop forever
nix-store --export takes a tmproot, which can only release by exiting.
Substituters don't currently work in a way that could take advantage of
the looping, anyway.

Signed-off-by: Shea Levy <shea@shealevy.com>
2014-02-08 00:13:32 -05:00
Shea Levy 3a38d0f356 Add the nix-store --serve command
This is essentially the substituter API operating on the local store,
which will be used by the ssh substituter. It runs in a loop rather than
just taking one command so that in the future nix will be able to keep
one connection open for multiple instances of the substituter.

Signed-off-by: Shea Levy <shea@shealevy.com>
2014-02-08 00:13:32 -05:00
Eelco Dolstra d210cdc435 Fix assertion failure in ‘nix-store --load-db’
Namely:

  nix-store: derivations.cc:242: nix::Hash nix::hashDerivationModulo(nix::StoreAPI&, nix::Derivation): Assertion `store.isValidPath(i->first)' failed.

This happened because of the derivation output correctness check being
applied before the references of a derivation are valid.
2014-02-03 22:36:07 +01:00
Eelco Dolstra d6582c04c1 Give a friendly error message if the DB directory is not writable
Previously we would say "error: setting synchronous mode: unable to
open database file" which isn't very helpful.
2014-02-01 16:57:38 +01:00
Eelco Dolstra 6ef32bddc1 Fix "make dist" 2014-02-01 14:38:12 +01:00
Eelco Dolstra 0c6d62cf27 Remove Automakefiles 2014-02-01 13:54:38 +01:00
Eelco Dolstra 16e7d69209 Update Makefile variable names 2014-02-01 13:54:38 +01:00
Eelco Dolstra e0234dfddc Rename Makefile -> local.mk 2014-01-30 12:11:06 +01:00
Eelco Dolstra 94f9c14d52 Fix some clang warnings 2014-01-21 18:29:55 +01:00
Eelco Dolstra 81628a6ccc Merge branch 'master' into make
Conflicts:
	src/libexpr/eval.cc
2014-01-21 15:30:01 +01:00
Eelco Dolstra b1db599dd0 Generate schema.sql.hh 2014-01-09 22:10:35 +01:00
Eelco Dolstra b4c684e0f9 Update Makefiles 2014-01-09 16:53:47 +01:00
Eelco Dolstra 11cb4bfb25 Fix checking of NAR hashes
*headdesk*
*headdesk*
*headdesk*

So since commit 22144afa8d, Nix hasn't
actually checked whether the content of a downloaded NAR matches the
hash specified in the manifest / NAR info file.  Urghhh...
2014-01-08 17:35:49 +01:00
Domen Kožar 485f4740ee wording 2014-01-06 11:38:24 +01:00
Eelco Dolstra a6add93d73 Garbage collector: Release locks on temporary root files
This allows processes waiting for such locks to proceed during the
trash deletion phase of the garbage collector.
2013-12-10 13:13:59 +01:00
Eelco Dolstra c5b8fe3151 Print a trace message if a build fails due to the platform being unknown 2013-12-05 14:31:57 -05:00
Eelco Dolstra 7ce0e05ad8 Rename Makefile.new -> Makefile 2013-11-25 15:25:13 +00:00
Eelco Dolstra 2bd0fcc966 Use libnix as a prefix for all Nix libraries
In particular "libutil" was always a problem because it collides with
Glibc's libutil.  Even if we install into $(libdir)/nix, the linker
sometimes got confused (e.g. if a program links against libstore but
not libutil, then ld would report undefined symbols in libstore
because it was looking at Glibc's libutil).
2013-11-23 23:53:41 +00:00
Eelco Dolstra 90dfb37f14 Allow (dynamic) libraries to depend on other libraries 2013-11-23 20:11:02 +00:00
Eelco Dolstra 6b5f89f2cf Drop the dependency on Automake 2013-11-22 19:30:24 +00:00
Eelco Dolstra 754c05ed6c Rename $(here) to $(d) for brevity, and remove trailing slash 2013-11-22 16:45:52 +00:00
Eelco Dolstra 62e35cc3a8 Add ‘make dist’ support 2013-11-22 16:42:25 +01:00
Eelco Dolstra b8e9efc476 New non-recursive, plain Make-based build system 2013-11-22 15:54:18 +01:00
Eelco Dolstra 709cbe4e76 Include <cstring> for memset
This should fix building on Illumos.
2013-11-22 10:00:43 +00:00
Eelco Dolstra a478e8a7bb Remove nix-setuid-helper
AFAIK, nobody uses it, it's not maintained, and it has no tests.
2013-11-14 11:57:37 +01:00
Eelco Dolstra 89e6781cc5 Make function calls show up in stack traces again
Note that adding --show-trace prevents functions calls from being
tail-recursive, so an expression that evaluates without --show-trace
may fail with a stack overflow if --show-trace is given.
2013-11-12 12:51:59 +01:00
Eelco Dolstra c086183843 For auto roots, show the intermediate link
I.e. "nix-store -q --roots" will now show (for example)

  /home/eelco/Dev/nixpkgs/result

rather than

  /nix/var/nix/gcroots/auto/53222qsppi12s2hkap8dm2lg8xhhyk6v
2013-10-22 11:39:10 +02:00
Eelco Dolstra a737f51fd9 Retry all SQLite operations
To deal with SQLITE_PROTOCOL, we also need to retry read-only
operations.
2013-10-16 15:58:20 +02:00
Eelco Dolstra ff02f5336c Fix a race in registerFailedPath()
Registering the path as failed can fail if another process does the
same thing after the call to hasPathFailed().  This is extremely
unlikely though.
2013-10-16 14:55:53 +02:00
Eelco Dolstra 4bd5282573 Convenience macros for retrying a SQLite transaction 2013-10-16 14:46:35 +02:00
Eelco Dolstra bce14d0f61 Don't wrap read-only queries in a transaction
There is no risk of getting an inconsistent result here: if the ID
returned by queryValidPathId() is deleted from the database
concurrently, subsequent queries involving that ID will simply fail
(since IDs are never reused).
2013-10-16 14:36:53 +02:00
Eelco Dolstra 7cdefdbe73 Print a distinct warning for SQLITE_PROTOCOL 2013-10-16 14:27:36 +02:00
Eelco Dolstra d05bf04444 Treat SQLITE_PROTOCOL as SQLITE_BUSY
In the Hydra build farm we fairly regularly get SQLITE_PROTOCOL errors
(e.g., "querying path in database: locking protocol").  The docs for
this error code say that it "is returned if some other process is
messing with file locks and has violated the file locking protocol
that SQLite uses on its rollback journal files."  However, the SQLite
source code reveals that this error can also occur under high load:

  if( cnt>5 ){
    int nDelay = 1;                      /* Pause time in microseconds */
    if( cnt>100 ){
      VVA_ONLY( pWal->lockError = 1; )
      return SQLITE_PROTOCOL;
    }
    if( cnt>=10 ) nDelay = (cnt-9)*238;  /* Max delay 21ms. Total delay 996ms */
    sqlite3OsSleep(pWal->pVfs, nDelay);
  }

i.e. if certain locks cannot be not acquired, SQLite will retry a
number of times before giving up and returing SQLITE_PROTOCOL.  The
comments say:

  Circumstances that cause a RETRY should only last for the briefest
  instances of time.  No I/O or other system calls are done while the
  locks are held, so the locks should not be held for very long. But
  if we are unlucky, another process that is holding a lock might get
  paged out or take a page-fault that is time-consuming to resolve,
  during the few nanoseconds that it is holding the lock.  In that case,
  it might take longer than normal for the lock to free.
  ...
  The total delay time before giving up is less than 1 second.

On a heavily loaded machine like lucifer (the main Hydra server),
which often has dozens of processes waiting for I/O, it seems to me
that a page fault could easily take more than a second to resolve.
So, let's treat SQLITE_PROTOCOL as SQLITE_BUSY and retry the
transaction.

Issue NixOS/hydra#14.
2013-10-16 14:19:59 +02:00
Eelco Dolstra 936f9d45ba Don't apply the CPU affinity hack to nix-shell (and other Perl programs)
As discovered by Todd Veldhuizen, the shell started by nix-shell has
its affinity set to a single CPU.  This is because nix-shell connects
to the Nix daemon, which causes the affinity hack to be applied.  So
we turn this off for Perl programs.
2013-09-06 16:36:56 +02:00
Eelco Dolstra b29d3f4aee Only show trace messages when tracing is enabled 2013-09-02 12:01:04 +02:00
Eelco Dolstra efe4289464 Add an option to limit the log output of builders
This is mostly useful for Hydra to deal with builders that get stuck
in an infinite loop writing data to stdout/stderr.
2013-09-02 11:58:18 +02:00
Ivan Kozik 34bb806f74 Fix typos, especially those that end up in the Nix manual 2013-08-26 11:15:22 +02:00
Gergely Risko c6c024ca6f Fix personality switching from x86_64 to i686
On Linux, Nix can build i686 packages even on x86_64 systems.  It's not
enough to recognize this situation by settings.thisSystem, we also have
to consult uname().  E.g. we can be running on a i686 Debian with an
amd64 kernel.  In that situation settings.thisSystem is i686-linux, but
we still need to change personality to i686 to make builds consistent.
2013-08-26 11:12:35 +02:00
Eelco Dolstra a583a2bc59 Run the daemon worker on the same CPU as the client
On a system with multiple CPUs, running Nix operations through the
daemon is significantly slower than "direct" mode:

$ NIX_REMOTE= nix-instantiate '<nixos>' -A system
real    0m0.974s
user    0m0.875s
sys     0m0.088s

$ NIX_REMOTE=daemon nix-instantiate '<nixos>' -A system
real    0m2.118s
user    0m1.463s
sys     0m0.218s

The main reason seems to be that the client and the worker get moved
to a different CPU after every call to the worker.  This patch adds a
hack to lock them to the same CPU.  With this, the overhead of going
through the daemon is very small:

$ NIX_REMOTE=daemon nix-instantiate '<nixos>' -A system
real    0m1.074s
user    0m0.809s
sys     0m0.098s
2013-08-07 14:02:04 +02:00
Eelco Dolstra a4921b8ceb Revert "build-remote.pl: Enforce timeouts locally"
This reverts commit 69b8f9980f.

The timeout should be enforced remotely.  Otherwise, if the garbage
collector is running either locally or remotely, if will block the
build or closure copying for some time.  If the garbage collector
takes too long, the build may time out, which is not what we want.
Also, on heavily loaded systems, copying large paths to and from the
remote machine can take a long time, also potentially resulting in a
timeout.
2013-07-18 12:52:29 +02:00
Shea Levy 16591eb3cc Allow bind-mounting regular files into the chroot
mount(2) with MS_BIND allows mounting a regular file on top of a regular
file, so there's no reason to only bind directories. This allows finer
control over just which files are and aren't included in the chroot
without having to build symlink trees or the like.

Signed-off-by: Shea Levy <shea@shealevy.com>
2013-07-15 16:01:33 +02:00
Eelco Dolstra aeb810b01e Garbage collector: Don't follow symlinks arbitrarily
Only indirect roots (symlinks to symlinks to the Nix store) are now
supported.
2013-07-12 14:03:36 +02:00
Eelco Dolstra 7ccd946407 Don't set $preferLocalBuild and $requiredSystemFeatures in builders
With C++ std::map, doing a comparison like ‘map["foo"] == ...’ has the
side-effect of adding a mapping from "foo" to the empty string if
"foo" doesn't exist in the map.  So we ended up setting some
environment variables by accident.
2013-06-20 18:07:27 +00:00
Eelco Dolstra 5558652709 Don't substitute derivations that have preferLocalBuild set
In particular this means that "trivial" derivations such as writeText
are not substituted, reducing the number of GET requests to the binary
cache by about 200 on a typical NixOS configuration.
2013-06-20 19:26:31 +02:00
Eelco Dolstra 1906cce6fc Increase SQLite's auto-checkpoint interval
Common operations like instantiating a NixOS system config no longer
fitted in 8192 pages, leading to more fsyncs.  So increase this limit.
2013-06-20 14:01:33 +00:00
Eelco Dolstra 9b11165aec Disable the copy-from-other-stores substituter
This substituter basically cannot work reliably since we switched to
SQLite, since SQLite databases may need write access to open them even
just for reading (and in WAL mode they always do).
2013-06-20 12:01:33 +02:00
Eelco Dolstra 22144afa8d Don't keep "disabled" substituters running
For instance, it's pointless to keep copy-from-other-stores running if
there are no other stores, or download-using-manifests if there are no
manifests.  This also speeds things up because we don't send queries
to those substituters.
2013-06-20 11:55:15 +02:00
Eelco Dolstra 1b6ee8f4c7 Allow hard links between the outputs of a derivation 2013-06-13 17:29:56 +02:00
Eelco Dolstra cd49ee0897 Fix a security bug in hash rewriting
Before calling dumpPath(), we have to make sure the files are owned by
the build user.  Otherwise, the build could contain a hard link to
(say) /etc/shadow, which would then be read by the daemon and
rewritten as a world-readable file.

This only affects systems that don't have hard link restrictions
enabled.
2013-06-13 17:12:24 +02:00
Eelco Dolstra 1e2c7c04b1 Fix assertion failure in canonicalisePathMetaData() after hash rewriting
The assertion in canonicalisePathMetaData() failed because the
ownership of the path already changed due to the hash rewriting.  The
solution is not to check the ownership of rewritten paths.

Issue #122.
2013-06-13 17:12:06 +02:00
Eelco Dolstra 6cc2a8f8ed computeFSClosure: Only process the missing/corrupt paths
Issue #122.
2013-06-13 16:43:20 +02:00
Eelco Dolstra f9ff67e948 In repair mode, update the hash of rebuilt paths
Otherwise subsequent invocations of "--repair" will keep rebuilding
the path.  This only happens if the path content differs between
builds (e.g. due to timestamps).
2013-06-13 14:46:07 +02:00
Eelco Dolstra ca70fba0bf Remove obsolete EOF checks 2013-06-07 15:10:23 +02:00
Eelco Dolstra 5959c591a0 Process stderr from substituters while doing have/info queries 2013-06-07 15:02:14 +02:00
Eelco Dolstra c5f9d0d080 Buffer reads from the substituter
This greatly reduces the number of system calls.
2013-06-07 14:00:23 +02:00
Eelco Dolstra b09b87321c nix-store --export: Export paths in topologically sorted order
Fixes #118.
2013-05-23 14:55:36 -04:00
Eelco Dolstra 2ee9da9e22 In trace messages, don't print the output path
This doesn't work if there is no output named "out".  Hydra didn't use
it anyway.
2013-05-10 00:24:33 +02:00
Eelco Dolstra 6eba05613a Communicate build timeouts to Hydra 2013-05-09 18:39:04 +02:00
Eelco Dolstra 69b8f9980f build-remote.pl: Enforce timeouts locally
Don't pass --timeout / --max-silent-time to the remote builder.
Instead, let the local Nix process terminate the build if it exceeds a
timeout.  The remote builder will be killed as a side-effect.  This
gives better error reporting (since the timeout message from the
remote side wasn't properly propagated) and handles non-Nix problems
like SSH hangs.
2013-05-09 17:17:17 +02:00
Eelco Dolstra 470553bd05 Don't let stderr writes in substituters cause a deadlock 2013-05-01 13:21:39 +02:00
Eelco Dolstra 0374d94437 addAdditionalRoots(): Check each path only once 2013-04-26 12:07:25 +02:00
Eelco Dolstra 772b70952f Fix --timeout
I'm not sure if it has ever worked correctly.  The line "lastWait =
after;" seems to mean that the timer was reset every time a build
produced log output.

Note that the timeout is now per build, as documented ("the maximum
number of seconds that a builder can run").
2013-04-23 18:04:59 +02:00
Eelco Dolstra 934cf2d1f4 Nix daemon: respect build timeout from the client 2013-04-23 16:59:06 +02:00
Eelco Dolstra 258897c265 Complain if /homeless-shelter exists 2013-04-04 11:16:26 +02:00
Shea Levy cc63db1dd5 makeStoreWritable: Ask forgiveness, not permission
It is surprisingly impossible to check if a mountpoint is a bind mount
on Linux, and in my previous commit I forgot to check if /nix/store was
even a mountpoint at all. statvfs.f_flag is not populated with MS_BIND
(and even if it were, my check was wrong in the previous commit).

Luckily, the semantics of mount with MS_REMOUNT | MS_BIND make both
checks unnecessary: if /nix/store is not a mountpoint, then mount will
fail with EINVAL, and if /nix/store is not a bind-mount, then it will
not be made writable. Thus, if /nix/store is not a mountpoint, we fail
immediately (since we don't know how to make it writable), and if
/nix/store IS a mountpoint but not a bind-mount, we fail at first write
(see below for why we can't check and fail immediately).

Note that, due to what is IMO buggy behavior in Linux, calling mount
with MS_REMOUNT | MS_BIND on a non-bind readonly mount makes the
mountpoint appear writable in two places: In the sixth (but not the
10th!) column of mountinfo, and in the f_flags member of struct statfs.
All other syscalls behave as if the mount point were still readonly (at
least for Linux 3.9-rc1, but I don't think this has changed recently or
is expected to soon). My preferred semantics would be for MS_REMOUNT |
MS_BIND to fail on a non-bind mount, as it doesn't make sense to remount
a non bind-mount as a bind mount.
2013-03-25 19:00:16 +01:00
Shea Levy 2c9cf50746 makeStoreWritable: Use statvfs instead of /proc/self/mountinfo to find out if /nix/store is a read-only bind mount
/nix/store could be a read-only bind mount even if it is / in its own filesystem, so checking the 4th field in mountinfo is insufficient.

Signed-off-by: Shea Levy <shea@shealevy.com>
2013-03-25 19:00:16 +01:00
Eelco Dolstra bdd4646338 Revert "Prevent config.h from being clobbered"
This reverts commit 28bba8c44f.
2013-03-08 01:24:59 +01:00
Eelco Dolstra 28bba8c44f Prevent config.h from being clobbered 2013-03-07 23:55:55 +01:00
Eelco Dolstra 8057a192e3 Handle systems without lutimes() or lchown() 2013-02-28 19:55:09 +01:00
Eelco Dolstra f45c731cd7 Handle symlinks properly
Now it's really brown paper bag time...
2013-02-28 14:51:08 +01:00
Eelco Dolstra 0111ba98ea Handle hard links to other files in the output 2013-02-27 17:18:41 +01:00
Eelco Dolstra b008674e46 Refactoring: Split off the non-recursive canonicalisePathMetaData()
Also, change the file mode before changing the owner.  This prevents a
slight time window in which a setuid binary would be setuid root.
2013-02-27 16:42:19 +01:00
Eelco Dolstra 5526a282b5 Security: Don't allow builders to change permissions on files they don't own
It turns out that in multi-user Nix, a builder may be able to do

  ln /etc/shadow $out/foo

Afterwards, canonicalisePathMetaData() will be applied to $out/foo,
causing /etc/shadow's mode to be set to 444 (readable by everybody but
writable by nobody).  That's obviously Very Bad.

Fortunately, this fails in NixOS's default configuration because
/nix/store is a bind mount, so "ln" will fail with "Invalid
cross-device link".  It also fails if hard-link restrictions are
enabled, so a workaround is:

  echo 1 > /proc/sys/fs/protected_hardlinks

The solution is to check that all files in $out are owned by the build
user.  This means that innocuous operations like "ln
${pkgs.foo}/some-file $out/" are now rejected, but that already failed
in chroot builds anyway.
2013-02-26 02:30:19 +01:00
Ludovic Courtès 3e067ac11c Add `Settings::nixDaemonSocketFile'. 2013-02-19 10:19:18 +01:00
Ludovic Courtès 5ea138dc4b Enable chroot support on old glibc versions. 2013-02-19 10:19:11 +01:00
Eelco Dolstra 5e9c3da412 Only warn about SQLite being busy once
No need to get annoying.
2013-01-23 16:45:10 +01:00
Eelco Dolstra 536c85ea49 Store build logs in /nix/var/log/nix/drvs/<XX>
...where <XX> is the first two characters of the derivation.
Otherwise /nix/var/log/nix/drvs may become so large that we run into
all sorts of weird filesystem limits/inefficiences.  For instance,
ext3/ext4 filesystems will barf with "ext4_dx_add_entry:1551:
Directory index full!" once you hit a few million files.
2013-01-17 15:47:26 +01:00
Eelco Dolstra e42df686f3 Delete a left-over trash directory before doing a GC 2013-01-05 00:13:29 +01:00
Eelco Dolstra 92926be2fe Fix "0 store paths deleted" message 2013-01-04 15:17:19 +01:00
Eelco Dolstra b424d29d1b Open the database after removing immutable bits 2013-01-03 13:29:17 +01:00
Eelco Dolstra def5160b61 Clear any immutable bits in the Nix store
Doing this once makes subsequent operations like garbage collecting
more efficient since we don't have to call makeMutable() first.
2013-01-03 12:59:23 +01:00
Eelco Dolstra 299141ecbd If a substitute closure is incomplete, build dependencies, then retry the substituter
Issue #77.
2013-01-02 12:38:28 +01:00
Eelco Dolstra 1b3a78a459 Automatically fall back if the references of a substitute are not substitutable
Fixes #77.
2013-01-02 12:00:26 +01:00
Eelco Dolstra 12f9129f60 nix-build: Support talking to old daemons
Fixes #76.
2012-12-29 23:21:46 +01:00
Eelco Dolstra b7629778ef Allow mounting a path in a different location in the chroot
Fixes #24.
2012-12-29 23:04:02 +01:00
Eelco Dolstra 2754a07ead nix-store -q --roots: Respect the gc-keep-outputs/gc-keep-derivations settings
So if a path is not garbage solely because it's reachable from a root
due to the gc-keep-outputs or gc-keep-derivations settings, ‘nix-store
-q --roots’ now shows that root.
2012-12-20 18:41:44 +01:00
Eelco Dolstra 06f62defe6 Yet another rewrite of the garbage collector
But this time it's *obviously* correct!  No more segfaults due to
infinite recursions for sure, etc.

Also, move directories to /nix/store/trash instead of renaming them to
/nix/store/bla-gc-<pid>.  Then we can just delete /nix/store/trash at
the end.
2012-12-20 17:32:15 +01:00
Eelco Dolstra e775d4d84f If gc-keep-derivations is set, only keep the actual deriver
This prevents zillions of derivations from being kept, and fixes an
infinite recursion in the garbage collector (due to an obscure cycle
that can occur with fixed-output derivations).
2012-12-19 15:33:09 +01:00
Eelco Dolstra fbf0b2fa45 Kill the build hook rather than shutting it down cleanly
Waiting for the hook to shut down cleanly sometimes seems to lead to
hangs.
2012-12-19 11:47:42 +01:00
Eelco Dolstra 228ea7c2f9 Revert brain fart
This reverts commit cc511fd65b.
2012-12-18 20:43:47 +01:00
Eelco Dolstra cc511fd65b Check for potential infinite select() loops when building 2012-12-18 18:50:05 +01:00
Eelco Dolstra 772778c0ec On SQLITE_BUSY, wait a random amount of time
If all contending processes wait a fixed amount of time (100 ms),
there is a good probability that they'll just collide again.
2012-12-11 11:49:42 +01:00