Commit graph

338 commits

Author SHA1 Message Date
Eelco Dolstra
bd0f362d2f Revive running builds in a PID namespace 2014-12-23 17:25:06 +01:00
Eelco Dolstra
b77037b8fd Silence some warnings on GCC 4.9 2014-12-12 17:14:28 +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
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
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
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
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
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
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
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
50dc1f5b71 Restore default SIGPIPE handler before invoking ‘man’
Fixes NixOS/nixpkgs#3410.
2014-07-31 10:31:17 +02:00
Eelco Dolstra
ee3c5d7916 Revert old useBuildHook behaviour 2014-07-19 02:25:47 +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
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
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
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