Commit graph

269 commits

Author SHA1 Message Date
Eelco Dolstra 6a07ff1ec0 * Change the ownership of store paths to the Nix account before
deleting them using the setuid helper.
2006-12-07 14:14:35 +00:00
Eelco Dolstra 7d8cf316ee * Pass the actual build user to the setuid helper. 2006-12-07 11:27:32 +00:00
Eelco Dolstra a45c498e4e * If Nix is not running as root, call the setuid helper to start the
builder under the desired build user.
2006-12-07 00:42:30 +00:00
Eelco Dolstra 813a7c65c9 * Sanity check. 2006-12-07 00:19:27 +00:00
Eelco Dolstra 6a8e60913a * Move killUser() to libutil so that the setuid helper can use it. 2006-12-07 00:16:07 +00:00
Eelco Dolstra 6e5ec1029a * Get rid of `build-users'. We'll just take all the members of
`build-users-group'.  This makes configuration easier: you can just
  add users in /etc/group.
2006-12-06 20:00:15 +00:00
Eelco Dolstra 9f0efa6611 * Start of the setuid helper (the program that performs the operations
that have to be done as root: running builders under different uids,
  changing ownership of build results, and deleting paths in the store
  with the wrong ownership).
2006-12-06 01:24:02 +00:00
Eelco Dolstra 2b558843a2 * Be less chatty. 2006-12-05 19:01:19 +00:00
Eelco Dolstra 44cad9630f * Urgh. Do setgid() before setuid(), because the semantics of setgid()
changes completely depending on whether you're root...
2006-12-05 18:28:15 +00:00
Eelco Dolstra 4c1c37d0b6 * FreeBSD returns ESRCH when there are no processes to kill. 2006-12-05 18:07:46 +00:00
Eelco Dolstra a9c4f66cfb * Allow unprivileged users to run the garbage collector and to do
`nix-store --delete'.  But unprivileged users are not allowed to
  ignore liveness.
* `nix-store --delete --ignore-liveness': ignore the runtime roots as
  well.
2006-12-05 02:18:46 +00:00
Eelco Dolstra 35247c4c9f * Removed `build-allow-root'.
* Added `build-users-group', the group under which builds are to be
  performed.
* Check that /nix/store has 1775 permission and is owner by the
  build-users-group.
2006-12-03 15:32:38 +00:00
Eelco Dolstra 7951c3c546 * Some hackery to propagate the worker's stderr and exceptions to the
client.
2006-12-03 02:08:13 +00:00
Eelco Dolstra e25fad691a * Move addTempRoot() to the store API, and add another function
syncWithGC() to allow clients to register GC roots without needing
  write access to the global roots directory or the GC lock.
2006-12-02 16:41:36 +00:00
Eelco Dolstra 0565b5f2b3 * More remote operations.
* Added new operation hasSubstitutes(), which is more efficient than
  querySubstitutes().size() > 0.
2006-11-30 22:43:55 +00:00
Eelco Dolstra 6ecb840fd1 * Put building in the store API. 2006-11-30 18:02:04 +00:00
Eelco Dolstra e2ef5e07fd * Refactoring. There is now an abstract interface class StoreAPI
containing functions that operate on the Nix store.  One
  implementation is LocalStore, which operates on the Nix store
  directly.  The next step, to enable secure multi-user Nix, is to
  create a different implementation RemoteStore that talks to a
  privileged daemon process that uses LocalStore to perform the actual
  operations.
2006-11-30 17:43:04 +00:00
Eelco Dolstra f459a5bb3a * Remove the undocumented `noscan' feature. It's no longer necessary
now that reference scanning is sufficiently streamy.
2006-11-13 18:19:05 +00:00
Eelco Dolstra e2a70b7ec0 * Magic attribute `exportReferencesGraph' that allows the references
graph to be passed to a builder.  This attribute should be a list of
  pairs [name1 path1 name2 path2 ...].  The references graph of each
  `pathN' will be stored in a text file `nameN' in the temporary build
  directory.  The text files have the format used by `nix-store
  --register-validity'.  However, the deriver fields are left empty.

  `exportReferencesGraph' is useful for builders that want to do
  something with the closure of a store path.  Examples: the builders
  that make initrds and ISO images for NixOS.

  `exportReferencesGraph' is entirely pure.  It's necessary because
  otherwise the only way for a builder to get this information would
  be to call `nix-store' directly, which is not allowed (though
  unfortunately possible).
2006-11-13 18:18:13 +00:00
Eelco Dolstra ae6fb27f18 * `nix-store --read-log / -l PATH' shows the build log of PATH, if
available.  For instance,

    $ nix-store -l $(which svn) | less

  lets you read the build log of the Subversion instance in your
  profile.

* `nix-store -qb': if applied to a non-derivation, take the deriver.
2006-10-28 16:33:54 +00:00
Eelco Dolstra 6a67556f71 * Special derivation attribute `allowedReferences' that causes Nix to
check that the references of the output of a derivation are in the
  specified set.  For instance,

    allowedReferences = [];

  specifies that the output cannot have any references.  (This is
  useful, for instance, for the generation of bootstrap binaries for
  stdenv-linux, which must not have any references for purity).  It
  could also be used to guard against undesired runtime dependencies,
  e.g.,

    {gcc, dynlib}: derivation {
      ...
      allowedReferences = [dynlib];
    }

  says that the output can refer to the path of `dynlib' but not
  `gcc'.  A `forbiddedReferences' attribute would be more useful for
  this, though.
2006-10-19 16:09:24 +00:00
Eelco Dolstra 75068e7d75 * Use a proper namespace.
* Optimise header file usage a bit.
* Compile the parser as C++.
2006-09-04 21:06:23 +00:00
Martin Bravenboer 3e5b68068b On cygwin, disable the check that the output is not group or world
writable. File permissions on Cygwin are rather complex, and in this
case this check introduced a problem with build jobs invoke from
outside of Cygwin (MSYS). It seemed almost impossible to fix the
permissions of the directory, so for now this safety check is disabled
on Cygwin.
2006-08-15 21:37:48 +00:00
Eelco Dolstra c15f544356 * Call find-runtime-roots.pl from the garbage collector to prevent
running applications etc. from being garbage collected.
2006-07-20 12:17:25 +00:00
Eelco Dolstra cc51f9c539 * Oops. 2006-06-19 16:35:35 +00:00
Eelco Dolstra 5bb3444032 * _exit() doesn't seem to work right on Cygwin. 2006-06-19 16:24:15 +00:00
Eelco Dolstra c937b73622 * Show when we're blocked waiting for a lock. 2006-06-16 10:13:03 +00:00
Eelco Dolstra 50fe85f016 * For fixed-output derivations, pass the environment variables listed
in the attribute variable `impureEnvVars' from the caller to the
  builder.
2006-05-31 09:51:45 +00:00
Eelco Dolstra 1390ce4142 * Not all platforms have sys/select.h. 2006-05-30 11:37:21 +00:00
Eelco Dolstra d764409d97 * Some Cygwin fixes. 2006-05-24 13:23:20 +00:00
Eelco Dolstra c8bfb11b34 * `nix-env (-i|-u) --dry-run' now shows exactly which missing paths
will be built or substituted.
2006-03-06 11:21:15 +00:00
Eelco Dolstra 74166f2f44 * db.hh shouldn't depend on the Berkeley DB headers. 2006-03-01 17:44:28 +00:00
Eelco Dolstra 81de538e46 * Use setsid instead of setpgrp in child processes. This not only
creates a new process group but also a new session.  New sessions
  have no controlling tty, so child processes like ssh cannot open
  /dev/tty (which is bad).
2006-02-03 14:20:59 +00:00
Eelco Dolstra b90daaaf6c * When killing a build hook, kill the entire process group (as
intended).  This ensures that any ssh child processes to remote
  machines are also killed, and thus the Nix process on the remote
  machine also exits.  Without this, the remote Nix process will
  continue until it exists or until its stdout buffer gets full and it
  locks up.  (Partially fixes NIX-35.)
2006-02-02 16:27:31 +00:00
Eelco Dolstra b7f008fc35 * Did something useful while waiting at IAD: reference scanning is now
much faster.
2005-11-16 08:27:06 +00:00
Eelco Dolstra 92d599c6a7 * Prevent uids from being used for more than one build
simultaneously.  We do this using exclusive locks on uid files in
  /nix/var/nix/userpool, e.g., /nix/var/nix/userpool/123 for uid 123.
2005-10-20 16:58:34 +00:00
Eelco Dolstra e932c40f8e * Oops. Fixed-output derivations were broken. 2005-10-19 14:27:44 +00:00
Eelco Dolstra 13b089c890 * Also kill all processes of the build user after the build. This is
critical to prevent certain kinds of 0wnage.
2005-10-17 17:43:21 +00:00
Eelco Dolstra f1b3a418fa * Before starting a build under some uid, kill all current processes
running under that uid.
2005-10-17 17:35:37 +00:00
Eelco Dolstra 439823ae80 * Check that the build result is owned by the build user, and that
nobody else has write permission to the build result.  This catches
  most hack attempts.
2005-10-17 16:59:25 +00:00
Eelco Dolstra 7ef574e5d0 * Don't use FIFOs to make Nix create the output path on behalf of the
builder.  Instead, require that the Nix store has sticky permission
  (S_ISVTX); everyone can created files in the Nix store, but they
  cannot delete, rename or modify files created by others.
2005-10-17 16:52:29 +00:00
Eelco Dolstra 32282abcea * Beginning of secure multi-user Nix stores. If Nix is started as
root (or setuid root), then builds will be performed under one of
  the users listed in the `build-users' configuration variables.  This
  is to make it impossible to influence build results externally,
  allowing locally built derivations to be shared safely between
  users (see ASE-2005 paper).

  To do: only one builder should be active per build user.
2005-10-17 15:33:24 +00:00
Eelco Dolstra ef9e2c8e73 * Typo. 2005-09-20 16:14:00 +00:00
Eelco Dolstra 456f3251d2 * Typo. 2005-05-10 14:21:46 +00:00
Eelco Dolstra f913283570 * Remove redundant message. 2005-04-13 09:20:27 +00:00
Eelco Dolstra cab7816b56 * Slightly nicer message. 2005-04-11 08:07:41 +00:00
Eelco Dolstra c6178f0b03 * Create missing log and temproots directories automatically (reported
by Rob).
2005-03-24 17:46:38 +00:00
Eelco Dolstra 0df9f08078 * Export the references graph to the build hook. 2005-03-23 13:16:36 +00:00
Eelco Dolstra bfaf83a0fd * When multiple derivations are specified in `nix-store -r', don't
continue building when one fails unless `--keep-going' is
  specified.
* When `--keep-going' is specified, print out the set of failing
  derivations at the end (otherwise it can be hard to find out which
  failed).
2005-02-23 11:19:27 +00:00
Eelco Dolstra 3a2c3f0cf2 * Support for fixed-output hashes over directory trees (i.e., over the
NAR dump of the path).
2005-02-22 21:14:41 +00:00
Eelco Dolstra eda2c3c253 * Compatibility hack so that Nixpkgs can continue to do hash checking
in `fetchurl' in Nix <= 0.7, but doesn't in Nix 0.8.
2005-02-22 15:23:24 +00:00
Eelco Dolstra 3c1630131e * Subtle bug in the builder: if a subgoal that is instantiated
multiple times is also a top-level goal, then the second and later
  instantiations would never be created because there would be a
  stable pointer to the first one that would keep it alive in the
  WeakGoalMap.
* Some tracing code for debugging this kind of problem.
2005-02-18 09:50:20 +00:00
Eelco Dolstra 88273f9574 * Put build logs in $prefix/var/nix/log/drvs/. 2005-02-17 13:54:45 +00:00
Eelco Dolstra 80870d9291 * Input sources should be in the set of all referenceable paths too. 2005-02-11 16:03:47 +00:00
Eelco Dolstra 98df735b51 * Propagate the deriver of a path through the substitute mechanism.
* Removed some dead code (successor stuff) from nix-push.
* Updated terminology in the tests (store expr -> drv path).
* Check that the deriver is set properly in the tests.
2005-02-09 12:57:13 +00:00
Eelco Dolstra 3d74274b37 * Updated `nix-store --verify' to the new schema. 2005-02-08 13:23:55 +00:00
Eelco Dolstra 450c358e20 * Maintain a database table (`derivers') that maps output paths to the
derivation that produced them.
* `nix-store -qd PATH' prints out the derivation that produced a path.
2005-02-07 13:40:40 +00:00
Eelco Dolstra 06b4424286 * Add missing files to dist.
* Fix GC and substitute bugs related to self-references.  Add a
  regression test.
2005-02-01 09:23:38 +00:00
Eelco Dolstra 1328aa3307 * Start of concurrent garbage collection. Processes write temporary
roots to a per-process temporary file in /nix/var/nix/temproots
  while holding a write lock on that file.  The garbage collector
  acquires read locks on all those files, thus blocking further
  progress in other Nix processes, and reads the sets of temporary
  roots.
2005-01-31 10:27:25 +00:00
Eelco Dolstra c505702265 * Fix and simplify the garbage collector (it's still not concurrent,
though).  In particular it's now much easier to register a GC root.
  Just place a symlink to whatever store path it is that you want to
  keep in /nix/var/nix/gcroots.
2005-01-27 15:21:29 +00:00
Eelco Dolstra a24b78e9f1 * Maintain the references/referers relation also for derivations.
This simplifies garbage collection and `nix-store --query
  --requisites' since we no longer need to treat derivations
  specially.

* Better maintaining of the invariants, e.g., setReferences() can only
  be called on a valid/substitutable path.
2005-01-25 21:28:25 +00:00
Eelco Dolstra 2a2756b856 * Simplification: registerSubstitutes -> registerSubstitute. We no
longer need the former since there we no longer have the
  substitutes-rev table (which triggered a O(n^2) cost in updating
  them).
2005-01-25 20:27:40 +00:00
Eelco Dolstra 066da4ab85 * Really fix the substitute mechanism, i.e., ensure the closure
invariant by registering references through the manifest.
* Added a test for nix-pull.
2005-01-25 17:08:52 +00:00
Eelco Dolstra c6290e42bc * Fix the `--fallback' switch.
* Fix the substitutes tests.
2005-01-25 13:00:12 +00:00
Eelco Dolstra 581fc47783 * Fix the build hook mechanism; pass the pointer graph to the hook. 2005-01-25 11:55:43 +00:00
Eelco Dolstra 80faa2f98a * In nix-store: change --build' back to --realise'. Also brought
back the query flag `--force-realise'.
* Fixed some of the tests.
2005-01-25 10:55:33 +00:00
Eelco Dolstra 6a0a2d5593 * Terminology fixes. 2005-01-20 16:01:07 +00:00
Eelco Dolstra 05f0430de1 * Another change to low-level derivations. The last one this year, I
promise :-) This allows derivations to specify on *what* output
  paths of input derivations they are dependent.  This helps to
  prevent unnecessary downloads.  For instance, a build might be
  dependent on the `devel' and `lib' outputs of some library
  component, but not the `docs' output.
2005-01-20 14:10:19 +00:00
Eelco Dolstra 96de272b48 * Renamed normalise.cc' -> build.cc', `storeexprs.cc' ->
`derivations.cc', etc.
* Store the SHA-256 content hash of store paths in the database after
  they have been built/added.  This is so that we can check whether
  the store has been messed with (a la `rpm --verify').
* When registering path validity, verify that the closure property
  holds.
2005-01-19 16:39:47 +00:00
Renamed from src/libstore/normalise.cc (Browse further)