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I ran into Jeremy Katz today, and he gave me permission to relicense
the small bits of switch-root.c to LGPLv2+. This combined with
permission from Peter Jones allows OSTree to become fully LGPLv2+.
Not a big deal, it's just a lot clearer to only have one license, and
it makes it easier to turn application code into library code.
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
We want an OstreeRepoFile to be the way to reference a "filesystem
tree" that's stored in the repo, which is a combination of a DIR_TREE
and a DIR_META. The idea is that once you write an mtree to the repo
using ostree_repo_write_mtree, it becomes serialized and you get an
OstreeRepoFile in return.
Change any APIs that care about DIR_TREE / DIR_META checksums to care
about OstreeRepoFiles instead, which right now is mostly is
ostree_repo_write_commit.
https://bugzilla.gnome.org/show_bug.cgi?id=707727
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
Previously I thought we'd have to ditch the current commit
format to avoid a{sv} due to
See https://bugzilla.gnome.org/show_bug.cgi?id=673012
But I realized that we don't really have to care about
unpacking/repacking commit objects, so let's just re-expose the
existing metadata a{sv} in commits in the API.
Also, add support for "detached" metadata that can be updated at any
time post-commit. This is specifically designed for GPG signatures.
https://bugzilla.gnome.org/show_bug.cgi?id=707379
...get_thread_default returns NULL when the thread default is also the global
default, so this only shows up when running in a thread (eg g_task_run_in_thread)
This is a relic from long ago when we were trying to stage objects
before finally committing them all in one go in the pull code.
We're no longer doing that, so stop trying to make the directory.
This also fixes trying to use ostree as non-root to read the
root-owned repo, since we'd fail to create the pending dir.
For the cases where we can't hardlink, use at-relative walking of the
path where possible. We still don't have lsetxattrat, so we also need
to deal with pathnames, but that is now only for symlinks.
Again, the advantages of this are a lot less malloc() of pathnames in
ostree, and much less time spent traversing paths inside the kernel.
https://bugzilla.gnome.org/show_bug.cgi?id=707733
Nothing external uses it. We keep ostree_get_xattrs_for_file() public
because it's convenient for external consumers to get xattrs in
exactly the format we desire.
https://bugzilla.gnome.org/show_bug.cgi?id=707733
Do as many operations as we can using the original file descriptor
while we have it open, rather than writing, closing, then reopening.
This necessitated very explicitly special casing symbolic links,
mainly due to the lack of lsetxattrat().
https://bugzilla.gnome.org/show_bug.cgi?id=707733
Clean up how we deal with the uncompressed object cache; we now use
openat()/linkat() and such just like we do for the main objects/.
Use linkat() between the objects and the destination, if possible.
https://bugzilla.gnome.org/show_bug.cgi?id=707733
Instead, use OstreeRepoFile as a handle for the parent commit.
We need to add an accessor for the metadata checksum, as that
hasn't been exposed before.
https://bugzilla.gnome.org/show_bug.cgi?id=707727
We can't quite do it for bare repositories yet because we need to have
a way to go from struct stat -> GFileInfo, and that's buried in gio's
private GLocalFile class.
Just use openat() for locating variants, rather than doing the lstat()
+ open(). This also drops several malloc+object allocations from the
lookup path.
Add new internal API to both fstatat() and write a pathname for the
given object. Use it in commit, and also wrapped in the old
GFile-based API.
This is more efficient.
Rather than having separate write_ref calls, make clients start a
transaction, add some refs, and then commit it. While this doesn't
make it 100% atomic, it makes it easier for us to use an atomic
model, and it means we don't do as much I/O updating the summary
file and such.
https://bugzilla.gnome.org/show_bug.cgi?id=707644
An earlier version of this API acted like git in that some objects
would be staged in a temporary directory which would be then committed
in one go by moving files around. The API doesn't match most users
expectations though, as while the stage is nice as a high-level API
it isn't really suited for low-level APIs.
While the stage was removed, the APIs were never renamed. Rename
them now so that they match expectations.
https://bugzilla.gnome.org/show_bug.cgi?id=707644
This avoids repeatedly traversing the target pathname, and is just
more efficient.
Part of a prelude to using fd-relative API for the source object path
too.
Update libgsystem submodule for a bugfix.
This is both more efficient from a kernel perspective, and avoids us
calling gs_file_get_path_cached() on tmp_dir constantly, which
triggered another bug due to lack of locking.
