Commit graph

366 commits

Author SHA1 Message Date
Eelco Dolstra
c0015e87af
Support base-64 hashes
Also simplify the Hash API.

Fixes #1437.
2017-07-04 15:07:41 +02:00
Eelco Dolstra
fcca702a96
Replace a few bool flags with enums
Functions like copyClosure() had 3 bool arguments, which creates a
severe risk of mixing up arguments.

Also, implement copyClosure() using copyPaths().
2017-07-03 11:38:08 +02:00
David McFarland
596b0e0a04 Call SetDllDirectory("") after sqlite3 init on cygwin
Cygwin sqlite3 is patched to call SetDllDirectory("/usr/bin") on init, which
affects the current process and is inherited by child processes.  It causes
DLLs to be loaded from /usr/bin/ before $PATH, which breaks all sorts of
things.  A typical failures would be header/lib version mismatches (e.g.
openssl when running checkPhase on openssh).  We'll just set it back to the
default value.

Note that this is a problem with the cygwin version of sqlite3 (currently
3.18.0).  nixpkgs doesn't have the problematic patch.
2017-06-20 10:59:13 -03:00
Eelco Dolstra
b5bdfdef73
macOS: Remove flags
In particular, UF_IMMUTABLE (uchg) needs to be cleared to allow the
path to be garbage-collected or optimised.

See https://github.com/NixOS/nixpkgs/issues/25819.
+       the file from being garbage-collected.
2017-06-19 14:19:21 +02:00
Eelco Dolstra
88b291ffc4
canonicalisePathMetaData(): Ignore security.selinux attribute
Untested, hopefully fixes #1406.
2017-06-14 11:41:03 +02:00
Eelco Dolstra
52fec8dde8
Remove listxattr assertion
It appears that sometimes, listxattr() returns a different value for
the query case (i.e. when the buffer size is 0).
2017-05-31 20:43:47 +02:00
Eelco Dolstra
acc889c821
Darwin sandbox: Use sandbox-defaults.sb
Issue #759.

Also, remove nix.conf from the sandbox since I don't really see a
legitimate reason for builders to access the Nix configuration.
2017-05-30 17:40:12 +02:00
Eelco Dolstra
d798349ede
canonicalisePathMetaData(): Remove extended attributes / ACLs
EAs/ACLs are not part of the NAR canonicalisation. Worse, setting an
ACL allows a builder to create writable files in the Nix store. So get
rid of them.

Closes #185.
2017-05-30 13:47:41 +02:00
Eelco Dolstra
63145be2a5
Fix typo 2017-05-29 15:52:36 +02:00
Eelco Dolstra
6f245bf24a
Change the meaning of info.ultimate
It now means "paths that were built locally". It no longer includes
paths that were added locally. For those we don't need info.ultimate,
since we have the content-addressability assertion (info.ca).
2017-05-11 13:31:23 +02:00
Eelco Dolstra
45d7b1a9e9
LocalStore::addToStore(): Check info.narSize
It allowed the client to specify bogus narSize values. In particular,
Downloader::downloadCached wasn't setting narSize at all.
2017-05-11 13:26:03 +02:00
Eelco Dolstra
3a5f04f48c
build-remote: Don't require signatures
This restores the old behaviour.
2017-05-01 20:03:25 +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
ecbc3fedd3
Require signatures by default
This corresponds to the NixOS default.
2017-03-21 15:10:48 +01:00
Eelco Dolstra
c5b83d8913
copyPaths(): Use queryValidPaths() to reduce SSH latency 2017-03-16 13:50:01 +01:00
Eelco Dolstra
07a0b8ca67
Tweak message 2017-03-01 14:52:16 +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
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
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
Eelco Dolstra
4b8f1b0ec0 Merge branch 'ssh-store' of https://github.com/shlevy/nix 2016-11-09 18:57:22 +01:00
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
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
4bd51d74af Handle the case where signed-binary-caches consists of whitespace 2016-09-22 15:59:25 +02:00
Eelco Dolstra
c55bf085eb printMsg(lvlError, ...) -> printError(...) etc. 2016-09-21 16:54:53 +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
Shea Levy
0f39633290 Factor out the unix domain socket-specific code from RemoteStore 2016-09-02 14:15:04 -04:00
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
f294623d1d SQLite:: Add some convenience 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
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
ee22a91ab8 makeFixedOutputPath(): Drop superfluous HashType argument 2016-07-26 21:25:52 +02:00
Shea Levy
cb5e7254b6 Modernize AutoCloseFD 2016-07-11 15:44:44 -04:00
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
30c8c3ba2d Fix some more references to storeDir 2016-06-03 14:02:44 +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
e24e2caaaf Skip substituters with an incompatible store directory 2016-06-01 16:40:49 +02:00
Eelco Dolstra
7850d3d279 Make the store directory a member variable of Store 2016-06-01 16:24:17 +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
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
6c75cf69c3 Cleanup: Remove singleton() 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
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
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
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
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
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
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
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
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
bb1034316d Don't overload dumpPath() 2016-03-22 14:21:45 +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
42bc395b63 Eliminate some large string copying 2016-03-04 16:49:56 +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
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
b49d323ce2 Fix build without sodium
http://hydra.nixos.org/build/32085949
2016-02-17 12:42:14 +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
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
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
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
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
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
2bc9c84327 Use posix_fallocate to create /nix/var/nix/db/reserved 2015-06-22 15:54:55 +02:00
Rok Garbas
000de699e9 cygwin: explicitly include required c headers 2015-05-13 09:37:12 +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
7ea6ecf855 addToStore(): Take explicit name argument 2015-03-25 17:06:12 +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
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
46f3eb6fdd Shut up a Valgrind warning 2014-12-12 15:10:02 +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
Eelco Dolstra
1256ab3b44 Clean up temp roots in a more C++ way 2014-11-19 17:07:29 +01:00