Commit graph

566 commits

Author SHA1 Message Date
Shea Levy cfdbfa6b2c
Catch more possible instances of passing NULL to memcpy.
Actually fixes #1976.
2018-03-14 23:53:43 -04:00
Eelco Dolstra 24b739817f
Fix double free in Store::queryPathInfo()
It was holding on to a Value* (i.e. a std::shared_ptr<ValidPathInfo>*)
outside of the pathInfoCache lock, so the std::shared_ptr could be
destroyed between the release of the lock and the decrement of the
std::shared_ptr refcount. This can happen if more than
'path-info-cache-size' paths are added in the meantime, *or* if
clearPathInfoCache() is called. The hydra-queue-runner queue monitor
thread periodically calls the later, so is likely to trigger a crash.

Fixes https://github.com/NixOS/hydra/issues/542.
2018-03-09 14:19:51 +01:00
Will Dietz e917c05628 logging: Don't throw from Activity destructor
Move definition of destructor to logging.cc for
access to util.hh's ignoreException.
2018-03-06 10:42:58 -06:00
Shea Levy aa8bbbf69d
Merge branch 'write-failure-fixes' of git://github.com/lheckemann/nix 2018-03-02 10:59:59 -05:00
Eelco Dolstra 24ec750003
nix run: Fix segfault on macOS
Note that clearenv() is not available on macOS.

Fixes #1907.
2018-02-26 18:29:40 +01:00
Tuomas Tynkkynen 546f98dace libutil: Fix invalid assert on decoding base64 hashes
The assertion is broken because there is no one-to-one mapping from
length of a base64 string to the length of the output.

E.g.

"1q69lz7Empb06nzfkj651413n9icx0njmyr3xzq1j9q=" results in a 32-byte output.
"1q69lz7Empb06nzfkj651413n9icx0njmyr3xzq1j9qy" results in a 33-byte output.

To reproduce, evaluate:

builtins.derivationStrict {
    name = "0";
    builder = "0";
    system = "0";
    outputHashAlgo = "sha256";
    outputHash = "1q69lz7Empb06nzfkj651413n9icx0njmyr3xzq1j9qy";
}

Found by afl-fuzz.
2018-02-19 23:20:26 +02:00
Tuomas Tynkkynen 1d0e42879f libutil: Fix infinite loop in filterANSIEscapes on '\r'
E.g. nix-instantiate --eval -E 'abort "\r"' hangs.

Found by afl-fuzz.
2018-02-19 23:20:26 +02:00
Eelco Dolstra ed73d40c3b
Config::handleUnknownSettings(): Remove unused 'fatal' argument 2018-02-19 14:00:34 +01:00
Eelco Dolstra 75a1d96cfd
Merge branch 'register-settings' of https://github.com/shlevy/nix 2018-02-19 13:58:34 +01:00
Eelco Dolstra 7fe5910bf8
Merge pull request #1857 from dtzWill/fix/check-for-lzma-mt
configure.ac: check if lzma has MT support, fix deb build/etc.
2018-02-19 13:06:14 +01:00
Shea Levy ac973a6d3c
monitor-fds: Fix on macOS.
Fixes #1871.
2018-02-14 18:26:37 -05:00
Shea Levy de4934ab3b
Allow plugins to define new settings. 2018-02-13 14:43:32 -05:00
Linus Heckemann 78ac3eb4eb Fix #1762
nix-store --export, nix-store --dump, and nix dump-path would previously
fail silently if writing the data out failed, because
 a) FdSink::write ignored exceptions, and
 b) the commands relied on FdSink's destructor, which ignores
    exceptions, to flush the data out.

This could cause rather opaque issues with installing nixos, because
nix-store --export would happily proceed even if it couldn't write its
data out (e.g. if nix-store --import on the other side of the pipe
failed).

This commit adds tests that expose these issues in the nix-store
commands, and fixes them for all three.
2018-02-13 14:26:19 +00:00
Shea Levy 6eb1040e90
Allow includes from nix.conf 2018-02-13 08:16:32 -05:00
Will Dietz c6209030c4 compression: make parallel sink separate class 2018-02-11 13:50:28 -06:00
Will Dietz a0bdc96726 compression: print warning if parallel requested but not supported 2018-02-11 13:03:47 -06:00
Will Dietz 5a082ad15a configure.ac: check if lzma has MT support, fix deb build/etc. 2018-02-09 21:02:25 -06:00
AmineChikhaoui 55ecdfe2a8
make multi threaded compression configurable and use single threaded
by default.
2018-02-07 17:54:08 +01:00
AmineChikhaoui 163e39547a
Merge branch 'master' of https://github.com/NixOS/nix into parallel-xz 2018-02-07 17:53:50 +01:00
Eelco Dolstra 84989d3af2
Improve filtering of ANSI escape sequences in build logs
All ANSI sequences except color setting are now filtered out. In
particular, terminal resets (such as from NixOS VM tests) are filtered
out.

Also, fix the completely broken tab character handling.
2018-02-07 15:23:57 +01:00
AmineChikhaoui 9d1e22f743
set block size to 0 to let the lzma lib choose the right one, add
some comments about possible improvements wrt memory usage/threading.
2018-02-07 11:18:55 +01:00
AmineChikhaoui bc7e3a4dd6
support multi threaded xz encoder, this might be particularly useful in
the case of hydra where the overhead of single threaded encoding is more
noticeable e.g most of the time spent in "Sending inputs"/"Receiving outputs"
is due to compression while the actual upload to the binary cache seems
to be negligible.
2018-02-06 22:42:02 +01:00
Eelco Dolstra d4dcffd643
Add pure evaluation mode
In this mode, the following restrictions apply:

* The builtins currentTime, currentSystem and storePath throw an
  error.

* $NIX_PATH and -I are ignored.

* fetchGit and fetchMercurial require a revision hash.

* fetchurl and fetchTarball require a sha256 attribute.

* No file system access is allowed outside of the paths returned by
  fetch{Git,Mercurial,url,Tarball}. Thus 'nix build -f ./foo.nix' is
  not allowed.

Thus, the evaluation result is completely reproducible from the
command line arguments. E.g.

  nix build --pure-eval '(
    let
      nix = fetchGit { url = https://github.com/NixOS/nixpkgs.git; rev = "9c927de4b179a6dd210dd88d34bda8af4b575680"; };
      nixpkgs = fetchGit { url = https://github.com/NixOS/nixpkgs.git; ref = "release-17.09"; rev = "66b4de79e3841530e6d9c6baf98702aa1f7124e4"; };
    in (import (nix + "/release.nix") { inherit nix nixpkgs; }).build.x86_64-linux
  )'

The goal is to enable completely reproducible and traceable
evaluation. For example, a NixOS configuration could be fully
described by a single Git commit hash. 'nixos-rebuild' would do
something like

  nix build --pure-eval '(
    (import (fetchGit { url = file:///my-nixos-config; rev = "..."; })).system
  ')

where the Git repository /my-nixos-config would use further fetchGit
calls or Git externals to fetch Nixpkgs and whatever other
dependencies it has. Either way, the commit hash would uniquely
identify the NixOS configuration and allow it to reproduced.
2018-01-16 19:23:18 +01:00
Will Dietz 9dd2b8ac7b use libbrotli directly when available
* Look for both 'brotli' and 'bro' as external command,
  since upstream has renamed it in newer versions.
  If neither are found, current runtime behavior
  is preserved: try to find 'bro' on PATH.
* Limit amount handed to BrotliEncoderCompressStream
  to ensure interrupts are processed in a timely manner.
  Testing shows negligible performance impact.
  (Other compression sinks don't seem to require this)
2017-12-30 20:26:33 -06:00
Will Dietz e4d43f1f94 logging.cc: add missing 'override' 2017-12-11 12:08:40 -06:00
Eelco Dolstra 6cdaa858d0
Propagate flags like --sandbox to the daemon properly 2017-11-21 18:50:56 +01:00
Eelco Dolstra d0b88db441
Cleanup 2017-11-20 17:32:58 +01:00
Eelco Dolstra 72804dc0bd
Merge pull request #1645 from twhitehead/stat-race
Fix (highly unlikely) race condition in readLink
2017-11-20 17:32:27 +01:00
Eelco Dolstra e026bc3b05
fetchMercurial: Don't fetch hashes we already have 2017-11-01 18:43:11 +01:00
Eelco Dolstra 72cd52c3cd
builtins.fetchgit: Support importing a working tree
For example, you can write

  src = fetchgit ./.;

and if ./. refers to an unclean working tree, that tree will be copied
to the Nix store. This removes the need for "cleanSource".
2017-10-30 19:59:25 +01:00
Tyson Whitehead 07d2c6d213
Fix (highly unlikely) race condition in readLink
Used to determine symlink size with stat and value with readlink.
This could technically result in garbage if symlink changed between
calls.  Also gets around the broken stat implementation in our
network filesystem (returns size + 1 giving a byte of garbage).
2017-10-30 11:49:55 -04:00
Eelco Dolstra 2d5b1b24bf
Pass lists/attrsets to bash as (associative) arrays 2017-10-25 13:01:50 +02:00
Eelco Dolstra 96051dd057
More progress indicator improvements
Fixes #1599.
2017-10-24 14:47:23 +02:00
Eelco Dolstra fe9d2f974d
Handle log messages from build-remote
This makes the progress indicator show statuses like "connecting to
'root@machine'".
2017-10-24 14:05:22 +02:00
Eelco Dolstra 0d59f1ca49
nix: Respect -I, --arg, --argstr
Also, random cleanup to argument handling.
2017-10-24 12:58:34 +02:00
Eelco Dolstra 37fbfffd8e
Pass all settings to build-remote
This ensures that command line flags such as --builders get passed
correctly.
2017-10-23 20:50:28 +02:00
Eelco Dolstra fda7b95cb0
Fix a hang in ThreadPool
The worker threads could exit prematurely if they finished processing
all items while the main thread was still adding items. In particular,
this caused hanging nix-store --serve processes in the build farm.

Also, process items from the main thread.
2017-10-09 15:41:09 +02:00
Eelco Dolstra e350671737
Doh 2017-09-25 13:25:55 +02:00
Eelco Dolstra 89dc62c174
RemoteStore: Add option to drop old connections from the pool
This is a hack to make hydra-queue-runner free its temproots
periodically, thereby ensuring that garbage collection of the
corresponding paths is not blocked until the queue runner is
restarted.

It would be better if temproots could be released earlier than at
process exit. I started working on a RAII object returned by functions
like addToStore() that releases temproots. However, this would be a
pretty massive change so I gave up on it for now.
2017-09-14 18:10:38 +02:00
Eelco Dolstra 970366266b
Add "nix add-to-store" command 2017-09-14 13:29:33 +02:00
Eelco Dolstra b7376edf06
ThreadPool: On exception, interrupt the other worker threads 2017-09-08 15:31:24 +02:00
Eelco Dolstra 8f6b347abd
ThreadPool: Improve exception handling
In particular, process() won't return as long as there are active
items. This prevents work item lambdas from referring to stack frames
that no longer exist.
2017-09-08 14:42:09 +02:00
Eelco Dolstra dff440aab3
nix build: Add --out-link and --no-link options 2017-09-06 16:20:34 +02:00
Eelco Dolstra fd73c1e20a
Add an activity for binary cache queries 2017-08-31 15:25:58 +02:00
Eelco Dolstra 9f47eac92b
Fix mismatched tag warning
https://hydra.nixos.org/build/59649086
2017-08-31 11:04:52 +02:00
Eelco Dolstra 5cc8609e30
nix run: Allow passing a command to execute
E.g.

  nix run nixpkgs.hello -c hello --greeting Hallo

Note that unlike "nix-shell --command", no quoting of arguments is
necessary.

"-c" (short for "--command") cannot be combined with "--" because they
both consume all remaining arguments. But since installables shouldn't
start with a dash, this is unlikely to cause problems.
2017-08-29 14:42:48 +02:00
Eelco Dolstra 05c45f301d
readLink(): Handle symlinks in /proc
Symlinks like /proc/self/exe report a stat() size of 0, so use a
buffer of at least PATH_MAX instead.
2017-08-29 11:52:34 +02:00
Eelco Dolstra 2cc345b95f
Give activities a verbosity level again
And print them (separately from the progress bar) given sufficient -v
flags.
2017-08-28 19:13:24 +02:00
Eelco Dolstra fe34b91289
Tunnel progress messages from the daemon to the client
This makes the progress bar work for non-root users.
2017-08-28 18:49:42 +02:00
Eelco Dolstra e681b1f064
Simplify 2017-08-28 14:30:35 +02:00