Commit Graph

282 Commits

Author SHA1 Message Date
Colin Walters ca678224be Static deltas support
https://bugzilla.gnome.org/show_bug.cgi?id=721799
2014-12-18 12:48:47 +01:00
Matthew Barnes 39be27fc93 Add ostree_repo_remote_list()
Lists available remote names.
2014-12-17 16:05:37 -05:00
Colin Walters f6a6e68412 Add more flexible _remote_change() API , expose via 'ostree remote'
For Anaconda, I needed OSTREE_REPO_REMOTE_CHANGE_ADD_IF_NOT_EXISTS,
with the GFile *sysroot argument to avoid ugly hacks.  We want to
write the content provided via "ostreesetup" as a remote to the target
chroot only in the case where it isn't provided as part of the tree
content itself.

This is also potentially useful in idempotent systems management tools
like Ansible.

https://bugzilla.gnome.org/show_bug.cgi?id=741577
2014-12-15 21:28:09 -05:00
Colin Walters 8067e977a7 repo: (cleanup) Use _is_system() rather than inlining it
No reason to duplicate the code.
2014-12-15 13:59:46 -05:00
Matthew Barnes ac882f2128 repo: Add private functions to access remote options
ostree_repo_pull_with_options() needs this, and I'd rather keep the
OstreeRemote struct definition tucked away in ostree-repo.c with its
own internal API.
2014-12-08 12:49:25 -05:00
Matthew Barnes f79896693e repo: Add ostree_repo_remote_get_url()
Peeking at remote details by way of ostree_repo_copy_config() doesn't
work anymore.
2014-12-08 12:49:23 -05:00
Matthew Barnes 17b9e399b8 repo: Add an internal struct to manage remotes
OstreeRemote is a reference-counted struct that encompasses data about a
remote, whether read from a configuration file or created explicitly via
ostree_repo_remote_add().

OstreeRemotes are held in an internal table indexed by remote name.
This solves some problems caused by merging system-wide remote data into
the OstreeRepo's internal config key file.

Also fixes https://bugzilla.gnome.org/show_bug.cgi?id=740911
2014-12-08 12:49:10 -05:00
Alexander Larsson 47c612e5a0 Support for "bare-user" repo format
This format is pretty much the same as the "bare" format, except the
file ownership and xattrs is not stored in the actual filesystem object, but
rather on the side in a user xattr. This means two things:

1) An unprivileged user can store such a repo independent of the types
   of files in it or their xattrs. And you can later (as root)
   reconstruct the real filesystem tree with ownership. Although you
   can't do that using hardlink-sharing. This also means ostree
   fsck does a full verification.

2) Such a repository can be checked out with user-mode (checkout -U)
   as an unprivileged user using hardlinks for space sharing.

Additionally, symlinks are stored as regular files (with the content
being the symlink target) because user xattrs are not supported on
symlinks. We know at checkout time if the file is a symlink because
the original st_mode is stored in the xattr metadata.

https://bugzilla.gnome.org/show_bug.cgi?id=741125
2014-12-08 10:39:39 +01:00
Matthew Barnes 59fd2b1e43 repo: Remove unused remote-cache dir
Unused leftover from when ostree had pack files; minor cleanup.

https://bugzilla.gnome.org/show_bug.cgi?id=739746
2014-11-06 13:31:58 -05:00
Matthew Barnes e4caf3c3cd Fix GFile leak in ostree_repo_constructed() 2014-11-05 15:41:33 -05:00
Colin Walters bcf40b4902 pull: Add depth support
For mirroring in particular, we really want to be able to traverse
all history.

$ ostree --repo=repo pull --mirror --depth=-1

https://bugzilla.gnome.org/show_bug.cgi?id=739240
2014-10-28 11:16:55 -04:00
Colin Walters 64dec0add8 libostree: Add ostree_repo_pull_with_options()
We potentially need a lot of argument types for pull.  Rather than
have a C function with tons of arguments, let's use a GVariant a{sv}
as a handy extensible (and immutable) bag of properties.

This is prepratory work for adding an option to pull to traverse
history.

https://bugzilla.gnome.org/show_bug.cgi?id=737844
2014-10-28 11:16:51 -04:00
Colin Walters 5fb8bb955e repo: When writing to a non-root owned repo, chown() objects to match
Some package systems need to be run as root, so the process linking to
libostree may also be root.  However, it's reasonable to have the
target repository be owned by a uid other than root.

This patch makes it Just Work by chowning the file content to match.

Note this only operates on archive-z2 repositories, because you can't
usefully serve bare repositories via HTTP.

https://bugzilla.gnome.org/show_bug.cgi?id=738954
2014-10-21 15:43:43 -04:00
Colin Walters cdfcf09316 Add "ostree remote delete" and corresponding API
For Anaconda, we have an ugly bootstrapping problem where we need to
add the remote to the repository's config, then do a pull+deploy, then
remove and re-add the config, because /etc/ostree/remotes.d doesn't
exist yet in the target system.

https://bugzilla.gnome.org/show_bug.cgi?id=738698
2014-10-17 19:09:42 -04:00
Colin Walters 884a9b27e9 repo: Disable uncompressed object cache on non-writable repos
While we did support disabling the uncompressed-objects-cache
per-repository:

1) We didn't actually respect that operation when doing
   CHECKOUT_MODE_USER on archive-z2 repositories
2) It'd be better to automatically detect we can't write to the
   repo and disable the uncompressed cache then.
2014-10-16 14:54:34 -04:00
Colin Walters 63abc1b513 pull: Support full recursive mirrors of repositories with summary file
Now that we have a summary file, we can use it to allow a simple:

ostree pull --mirror

To download the latest commit on every branch.  Also, for a case I'm
dealing with there's only one branch, but I don't want mirror users to
have to hardcode it.

https://bugzilla.gnome.org/show_bug.cgi?id=737807
2014-10-03 13:56:40 -04:00
Colin Walters 7ab1fb2369 Add API to directly link() objects between repositories
And use it in pull-local.  As one might expect, this is blazingly fast
if they're on the same filesystem.

I'll be using this to "promote" builds between different repositories.
2014-10-01 23:20:35 -04:00
Colin Walters b756a13a65 Extract opendirat() helper function into libotutil
We were duplicating the code to do an opendirat() in a few places.
2014-09-16 11:34:39 -04:00
Colin Walters f8f5da219e Add repository "summary" file and metalink support
For Fedora and potentially other distributions which use globally
distributed mirrors, metalink is a popular solution to redirect
clients to a dynamic set of mirrors.

In order to make metalink work though, it needs *one* file which can
be checksummed.  (Well, potentially we could explode all refs into the
metalink.xml, but that would be a lot more invasive, and a bit weird
as we'd end up checksumming the checksum file).

This commit adds a new command:

$ ostree summary -u

To regenerate the summary file.  Can only be run by one process at a
time.

After that's done, the metalink can be generated based on it, and the
client fetch code will parse and load it.

https://bugzilla.gnome.org/show_bug.cgi?id=729585
2014-09-03 13:21:52 -04:00
Anne LoVerso 3742c32945 repo-pull: Allow pulling only one directory
Changes the pull API to allow pulling only a single directory instead
of the whole deployment.  This option is utilized by the check-diff
option in rpm-ostree.

Add a new state directory to hold <checksum>.commitpartial files, so
we know that we've only downloaded partial state.
2014-08-20 15:09:32 -04:00
Colin Walters e392820541 core: Do enumerate ff/ objects as well
An embarassing off-by-one here.  I noticed we weren't pruning them.

https://bugzilla.gnome.org/show_bug.cgi?id=733458
2014-07-21 07:25:51 -04:00
Colin Walters 1834a71b1f core: Do enumerate content objects in archive-z2 repositories
Prune has worked fine on bare repositories for some time, but now that
I finally try to delete data on the server side, I notice we weren't
actually enumerating content objects =/

That caused them to not be pruned.

https://bugzilla.gnome.org/show_bug.cgi?id=733458
2014-07-21 07:25:51 -04:00
Colin Walters 72da2e0c36 core: Unify object deletion code with prune
The prune API duplicated logic to delete objects, and furthermore the
core API to delete an object didn't clean up detached metadata.

Fix the duplication by doing the obvious thing: prune should call
_delete.

https://bugzilla.gnome.org/show_bug.cgi?id=733452
2014-07-20 08:57:37 -04:00
Anne LoVerso fd56952d6b ostree-repo-resolve-rev: Add function to accept a partial checksum
This patch adds a function that will parse a partial checksum when
resolving a refspec.  If the inputted refspec matches a truncated
existing checksum, it will return that checksum to be parsed.  If
multiple truncated checksums match the partial refspec, it is not
unique and will return false.  This addition is inspired by the same
functionality in Docker, which allows a user to reference a specific
commit without typing the entire checksum.

partial checksums: Add function to abstract comparison

This modifies the list_objects and list_objects_at functions
to take an additional argument for the string that a commit starts
with.  If this string arg is not null, it will only list commit
objects beginning with that string.  This allows for a new function
ostree_repo_list_commit_objects_starting_with to pass a partial string
and return a list of all matching commits.  This improves on the
previous strategy of listing refs because it will list all commit objects,
even ones in past history.  This update also includes bugfixes on
error handling and string comparison, and changes the output structure
of resolve_partial_checksum. The new strcuture will no longer return FALSE
without error.  Also, the hashtable foreach now uses iter.  Also
includes modified test file
2014-07-18 15:15:44 -04:00
Colin Walters d7067975e7 [staticanalysis]: Fix two uses of uninitialized variables
https://bugzilla.gnome.org/show_bug.cgi?id=732020
2014-06-21 18:08:49 -04:00
Colin Walters 2265ccdeb3 libostree: Add ostree_repo_remote_add() API, port "ostree remote add"
At least one external tool is using the API, and wants to add a
remote, but all of the logic right now is in the tool.  Move it to the
library.

https://bugzilla.gnome.org/show_bug.cgi?id=731984
2014-06-20 15:36:46 -04:00
Colin Walters 51bf1fab0f repo: Support fsync=false configuration
See rationale in the updated docs.  Basically developer use cases as
well as UPS-backed servers.
2014-06-05 17:35:50 -04:00
Colin Walters a4d01976bb repo: Only load /etc/ostree/remotes.d for system repo
They shouldn't be loaded for random test/personal repositories.  Doing
so triggers another bug in that we return them from
ostree_repo_get_config() when then causes clients to write them out
permanently to disk with ostree_repo_write_config().  This caused test
suite failures.
2014-05-26 18:38:35 -04:00
Colin Walters f47a20fb81 Support /etc/ostree/remotes.d
For many OS install scenarios, one runs through an installer which may
come with embedded data, and then the OS is configured post-install to
receive updates.

In this model, it'd be nice to avoid the post-install having to rewrite
the /ostree/repo/config file.

Additionally, it feels weird for admins to interact with "/ostree" -
let's make the system feel more like Unix and have our important
configuration in /etc.

https://bugzilla.gnome.org/show_bug.cgi?id=729343
2014-05-08 18:59:24 -04:00
Colin Walters cbc11f42e5 libostree: Add API to append a GPG signature
This will be used by rpm-ostree which needs to use an external program
to sign commits.
2014-03-14 21:57:48 -04:00
Colin Walters 3ffdef07a4 repo: Split generic GPG commit verification out into helper
This will be used for a future commit which GPG verifies static
deltas.
2014-02-10 09:40:35 -05:00
Colin Walters 2ee2751fd1 repo: Don't set GPG engine executable path
The instructions one finds on the internets are apparently wrong, we
really need to keep the default here, since gpgme uses it to actually
find the helper binary it runs.

This fixes the GPG tests for me on EL7 at least.
2014-02-10 09:12:00 -05:00
Colin Walters 2d6374822b Initial basic static delta code drop
This has a very basic level of functionality (deltas can be generated,
and applied offline).  There is only some stubbed out pull code to
fetch them via HTTP.

But, better to commit this now and improve it from a known starting
point, rather than have it languish in a branch.
2014-02-04 10:31:44 -05:00
Colin Walters 234ae70b4c Add --disable-fsync option to pull-local, and API to repo
This will be used by guestmount - it's WAY faster.  We only take disks
as a unit, so it's safe.  If the process fails halfway through, we
just start over from scratch the next time anyways.
2014-01-31 22:18:13 -05:00
Colin Walters f36cc6a44c repo: Improve GPG error messages
The signing test is failing here on EL7 beta for me - it seems like
gnupg isn't honoring the homedir.
2014-01-30 17:17:36 -05:00
Colin Walters 43fdfa0649 repo: Document ostree_repo_sign_commit(), and add introspection data
The important bit for introspection is (allow-none) on the homedir.
2014-01-20 12:13:37 -05:00
Colin Walters 9adbc165e7 repo: Introspect _sign_commit() and _verify_commit()
We can't use #ifdef in the headers, since then g-ir-scanner won't pick
up the functions (unless we included config.h).  Let's instead always
have the symbols, but just set an error if we were built without
support for it, just like how pull works.
2013-12-23 11:40:57 -05:00
Colin Walters 76d9d92916 repo: Provide a friendlier error message if no signatures are found
I always forget the key to disable it...
2013-12-17 23:00:01 -05:00
Colin Walters a24afd68f0 Move xattr handling into libgsystem, fix sysroot to handle directory ownership/perms
This large patch moves the core xattr logic down into libgsystem,
which allows the gs_shutil_cp_a() API to copy them.  In turn, this
allows us to just use that API instead of rolling our own recursive
copy here.

As noted in the new comment though, one case that we are explicitly
regressing is where the new /etc removes a parent directory that's
needed by a modified file.  This seems unlikely for most vendors now,
but let's do that as a separate bug.

https://bugzilla.gnome.org/show_bug.cgi?id=711058
2013-11-28 23:28:13 -05:00
Colin Walters 73ff642b15 libostree: Remove extra : in comment
g-ir-scanner handles this, but it stuck out.
2013-10-24 20:32:20 -04:00
Colin Walters c65923e642 Add OstreeAsyncProgress, use it for ostree_repo_pull
Several APIs in libostree were moved there from the commandline code,
and have hardcoded g_print() for progress and notifications.  This
isn't useful for people who want to write PackageKit backends, custom
GUIs and the like.

From what I can tell, there isn't really a winning precedent in GLib
for progress notifications.

PackageKit has the model where the source has GObject properties that
change as async ops execute, which isn't bad...but I'd like something
a bit more general where say you can have multiple outstanding async
ops and sensibly track their state.

So, OstreeAsyncProgress is basically a threadsafe property bag with a
change notification signal.

Use this new API to move the GSConsole usage (i.e. g_print()) out from
libostree/ and into ostree/.
2013-10-24 14:27:13 -04:00
Jeremy Whiting f583c4ab0b core: Add size information to commit metadata
Add a --generate-sizes option to commit to add size information to the
commit metadata.  This will be used by higher level code which wants
to determine the total size necessary for downloading.
2013-10-19 11:56:51 -04:00
Colin Walters 7c903eb889 repo: Remove set-but-unused variable
The gpgme examples use this, but from what I can tell we don't really
need to because we don't need detailed results; we only care whether
we signed it at all.
2013-10-15 16:44:19 -04:00
Colin Walters 7b119370a2 repo: Enumerate objects using openat() too, make more efficient
This drops several calls to malloc()/g_object_new() per object
enumeration.  Just a followup to using openat() and friends in other
places.
2013-09-30 08:51:25 -04:00
Jeremy Whiting 7f9eefb62d pull: Verify commits with gpg signatures from detached metadata
This uses gpgv for verification against DATADIR/ostree/pubring.gpg by
default.  The keyring can be overridden by specifying OSTREE_GPG_HOME.

Add a unit test for commit signing with gpg key and verifying on pull;
to implement this we ship a test GPG key generated with no password
for Ostree Tester <test@test.com>.

Change all of the existing tests to disable GPG verification.
2013-09-29 14:49:47 -04:00
Jeremy Whiting 7d5aa74dae core: Use libgpgme to add GPG signatures to detached metadata for commit object
Add an optional dependency on gpgme to add GPG signatures into the
detached metadata, with the key "ostree.gpgsigs", as an "aay", an
array of signatures (treated as binary data).

The commit command gains a --gpg-sign=<key-id> argument.  Also add an
argument --gpg-homedir to set the GPG homedir where we look for
keyrings.
2013-09-28 16:12:35 -04:00
Colin Walters 27b46cb45c libostree: Fix compiler warning 2013-09-10 12:25:13 -04:00
Jasper St. Pierre 223bccf2f6 repo: Make read_commit spit out a resolved commit ref as well
read_commit resolves the ref to a commit, and a lot of consumers want
the resolved commit for their own purposes; this prevents them from
calling resolve_rev themselves.

https://bugzilla.gnome.org/show_bug.cgi?id=707727
2013-09-09 22:58:39 -04:00
Jasper St. Pierre 33db74d0ce repo-file: Base OstreeRepoFile on trees instead of commits
We want an OstreeRepoFile to be the way to represent a filesystem tree
inside an ostree repository. In order to do this, we need to drop the
commit from an OstreeRepoFile, and make that go to callers.

Switch all current users of ostree_repo_file_new_root to
ostree_repo_read_commit, and make the actual constructor private.

https://bugzilla.gnome.org/show_bug.cgi?id=707727
2013-09-09 22:31:59 -04:00
Colin Walters 3ff4b1874c core: Use openat() for reading bare file objects too
...unless we want xattrs, in which case we have to fallback to path
lookup due to lack of llistxattrat().

This looks nicer in strace.
2013-09-08 19:31:44 -04:00