Commit Graph

2669 Commits

Author SHA1 Message Date
Dan Nicholson 63ce86d597 lib/repo: Properly handle NULL homedir when signing commit
Without this, ostree_repo_sign_commit throws a critical message when no
homedir is provided:

(ostree gpg-sign:5034): GLib-GIO-CRITICAL **: g_file_new_for_path: assertion 'path != NULL' failed

Closes: #1305
Approved by: cgwalters
2017-10-24 19:58:07 +00:00
Philip Withnall 886a5d7928 lib/repo-finder-mount: Fix propagating NULL errors
These two code paths tried to propagate errors which had never been set.
Set new errors instead.

Signed-off-by: Philip Withnall <withnall@endlessm.com>

Closes: #1303
Approved by: cgwalters
2017-10-24 16:59:54 +00:00
Philip Withnall 90680e1b29 lib/repo-finder-avahi: Fix memory corruption of a GVariantIter
A GVariantIter* was being passed to a GVariant format string varargs,
rather than a GVariantIter**. This resulted in memory corruption.

So we can continue to reuse ref_map throughout the function, make it a
GVariantIter* rather than a stack-allocated GVariantIter.

Signed-off-by: Philip Withnall <withnall@endlessm.com>

Closes: #1301
Approved by: cgwalters
2017-10-24 12:55:24 +00:00
Colin Walters ed15723cd1 lib/commit: Fix hardlink checkout commit with bare-user + mod xattrs
This is more subtle fallout from:
https://github.com/ostreedev/ostree/pull/1170
AKA commit: 8fe4536257

Before, if we found a devino cache hit, we'd use it unconditionally.

Recall that `bare-user` repositories are very special in that they're the only
mode where the on disk state ("physical state") is not the "real" state. The
latter is stored in the `user.ostreemeta` xattr. (`bare-user` repos are also
highly special in that symlinks are regular files physically, but that's not
immediately relevant here).

Since we now have `bare-user-only` for the "pure unprivileged container" case,
`bare-user` should just be used for "OS builds" which have nonzero uids (and
possibly SELinux labels etc.)

In an experimental tool I'm writing "skopeo2ostree" which imports OCI images
into refs, then squashes them together into a single final commit, we lost the
the `81` group ID for `/usr/libexec/dbus-1/dbus-daemon-launch-helper`.

This happened because the commit code was loading the "physical" disk state,
where the uid/gid are zero because that's the uid I happened to be using. We
didn't just directly do the link speedup because I was using `--selinux-policy`
which caused the xattrs to change, which caused us to re-commit objects from the
physical state.

The unit test I added actually doesn't quite trigger this, but I left
it because "why not".  Really testing this requires the installed test
which uses SELinux policy from `/`.

The behavior without this fix looks like:

```
-00755 0 0     12 { [(b'user.ostreemeta', [byte 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x51, 0x00, 0x00, 0x81, 0xed]), (b'security.selinux', b'system_u:object_r:lib_t:s0')] } /usr/lib/dbus-daemon-helper
```

which was obviously totally broken - we shouldn't be picking up the
`user.ostreemeta` xattr and actually committing it of course.

Closes: #1297
Approved by: jlebon
2017-10-23 17:02:28 +00:00
Philip Withnall 4c0f67be0c lib/sysroot: Expand docs for ostree_sysroot_get_repo()
Add some missing annotations and clarify that it always returns an open
repository on success.

Signed-off-by: Philip Withnall <withnall@endlessm.com>

Closes: #1300
Approved by: cgwalters
2017-10-23 16:17:20 +00:00
Colin Walters 795a953a36 core: Add standard SOURCE_TITLE metadata key
This is a freeform string useful to track/display when a commit is "derived"
from some other format.  For example, in the rpm-ostree test we make a
`vmcheck` ref that conceptually overlays the default ref like
`fedora-atomic:fedora/26/x86_64/atomic-host`.

My current patch sets the source title to e.g.
"Dev overlay on fedora-atomic:fedora/26/x86_64/atomic-host".

Another case I'm working on now is importing OCI images to use
as host images.  For that case, the source title is
With this patch we could then set the original OCI image name + tag
as the source name, like:
"oci:cgwalters/demo-custom-fedora-atomic-host:26".

Closes: #1296
Approved by: jlebon
2017-10-23 14:19:41 +00:00
Colin Walters 0e0fe85922 bin/status: Inline metadata parsing for versions
Pull out the commit metadata explicitly; still just rendering the version, but
this is prep for rendering other metadata keys.

Closes: #1296
Approved by: jlebon
2017-10-23 14:19:41 +00:00
Colin Walters 32357cef4d bin/status: Port to new style
No functional changes; prep for more work.

Closes: #1296
Approved by: jlebon
2017-10-23 14:19:41 +00:00
Colin Walters 1222c2271b repo: Add wrapper function for setting devino cache on checkout opts
I was trying to use this with pygobject for an OCI+ostree project, and pygobject
rejected simply assigning to the field (understandably, since it can't bind the
lifetime together).

Add a wrapper function, which is still unsafe, but hides that unsafety
where most people shouldn't find it.  And if they do...well, sorry,
Rust wasn't invented when ostree was started.

Closes: #1295
Approved by: pwithnall
2017-10-20 18:20:19 +00:00
Colin Walters b8251d26bd lib/checkout: For "process whiteouts" mode, replace directories too
I'm playing around with some ostree ⇔ OCI/Docker bits, and ran
into this while importing an OCI image that built from the Fedora
base image where `/home` is a regular directory, and I added a layer
that did the ostree bits of moving it to `/var` and leaving a symlink.

OCI/Docker supports this.  Now since "process whiteouts" is really the
"enable OCI/Docker" mode, let's only replace dirs if that's enabled.
This leaves the `UNION_FILES` targeted for its original use case
which is unioning components/packages.  (Although that use case itself
is now a bit superceded by `UNION_IDENTICAL`, but eh).

Closes: #1294
Approved by: jlebon
2017-10-20 13:20:27 +00:00
Ruixin Bao 9166605e5a ostree: provide command description in a better place
This is similar idea as
5c0bf88915,

The duplicated description is now removed, and the description
of the command is now displayed beneath the Usage.

For example:
ostree cat -h will output the following:

"Usage:
  ostree cat [OPTION?] COMMIT PATH...

Concatenate contents of files"

Closes: #1267
Approved by: cgwalters
2017-10-20 12:59:33 +00:00
Ruixin Bao 298c151fd8 ostree: move flags into command struct, pass down through builtins
This is a similar approach as
12c34bb249.

One thing to note is when we parse the admin related functions,
we still keep the old admin related flags, and added a new parameter
to represent the command struct.

This allows us to identify the caller of the function, making it
easier for us to possibly deduplicate the subcommand handling in
the future. A similar approach is done in rpm-ostree:
83aeb018c1

This also makes it easier for us to change the prototype of the function.
If we want to add something new in the future, we won't need to touch every prototype.

Closes: #1267
Approved by: cgwalters
2017-10-20 12:59:33 +00:00
Ruixin Bao 3c360a720f ostree: Describe subcommands in help output
Added a description argument to all type
of commands. Now when we include -h or --help
for commands that contain subcommands, the description
for those subcommands are shown.

The added subcommands help will be provided to the following commands:
- ostree -h
- ostree admin -h
- ostree admin instutil -h
- ostree remote -h
- ostree static-delta -h

Closes: #1267
Approved by: cgwalters
2017-10-20 12:59:32 +00:00
Philip Withnall 2531d8fe63 lib/repo-finder: Add OstreeRepoFinderOverride
This is another OstreeRepoFinder implementation; it returns results from
a given set of URIs. It’s designed to be used for implementing user
overrides to other repo-finders, or for implementing unit tests.

Signed-off-by: Philip Withnall <withnall@endlessm.com>

Closes: #1281
Approved by: mwleeds
2017-10-19 19:11:58 +00:00
Philip Withnall a1f020ffa4 lib/repo-finder-avahi: Fix a leak in a GVariantIter loop
Use g_variant_iter_loop() rather than next(), since it automatically
handles freeing the child memory each iteration. Previously, we leaked
it for all but the last iteration.

Signed-off-by: Philip Withnall <withnall@endlessm.com>

Closes: #1293
Approved by: cgwalters
2017-10-19 13:16:59 +00:00
Colin Walters e466e482b1 Disallow refs starting with a non-letter or digit
Change the regexp for validating refs to require at least one letter or digit
before allowing the other special chars in the set `[.-_]`. Names that start
with `.` are traditionally Unix hidden files; let's ignore them under the
assumption they're metadata for some other tool, and we don't want to
potentially conflict with the special `.` and `..` Unix directory entries.
Further, names starting with `-` are problematic for Unix cmdline option
processing; there's no good reason to support that. Finally, disallow `_` just
on general principle - it's simpler to say that ref identifiers must start with
a letter or digit.

We also ignore any existing files (that might be previously created refs) that
start with `.` in the `refs/` directory - there's a Red Hat tool for content
management that injects `.rsync` files, which is why this patch was first
written.

V1: Update to ban all refs starting with a non-letter/digit, and
    also add another call to `ostree_validate_rev` in the pull
    code.

Closes: https://github.com/ostreedev/ostree/issues/1285

Closes: #1286
Approved by: jlebon
2017-10-18 20:55:43 +00:00
Jonathan Lebon 18b85fa8bd lib/commit: fix checking flag with bitwise OR
Caught by Coverity.

Coverity CID: 1458339

Closes: #1290
Approved by: cgwalters
2017-10-18 14:27:20 +00:00
Colin Walters a2f8315eae lib/commit: (refactor) Clean up delta bare write API
The way `_ostree_repo_open_content_bare()` did both looking for the object and
possibly creating a new fd was just weird and inconsistent with e.g. the pull
code where we always call `has_object()` first.

Just call `has_object()` in the delta paths that used this too, making the
implementation right now a thin wrapper around
`glnx_open_tmpfile_linkable_at()`, but this is prep for a later patch which does
more.

Closes: #1283
Approved by: jlebon
2017-10-18 14:07:55 +00:00
Colin Walters 40a0b9fb73 lib/repo: Update summary code to use newer hashing API
And drop the unnecessary wrapper.

Closes: #1287
Approved by: jlebon
2017-10-18 13:27:11 +00:00
Colin Walters de5f781089 lib/pull: Update summary checksum code to use new checksum API
This is another case where making an input stream out of a memory buffer is a
bit silly; just hash the `GBytes` directly.

Closes: #1287
Approved by: jlebon
2017-10-18 13:27:11 +00:00
Colin Walters 9955695da3 syntax-check: Add a rule to enforce glnx_autofd over glnx_fd_close
And fix the one final use.

Closes: #1280
Approved by: jlebon
2017-10-17 16:43:02 +00:00
Colin Walters 3577b4a6c6 lib/commit: Use direct fd xattr operations again on regular files
A side effect of commit 8fe4536257 is that
we started listing all xattrs even for files with device/inode matches;
further, we did that using the dfd/name which means we went through
the `/proc` path, which is slower and uglier.

Noticed this in strace while looking at adoption code.

Closes: #1280
Approved by: jlebon
2017-10-17 16:43:02 +00:00
Colin Walters eeabd4baf7 lib/commit: Fix indentation in file commit code
No functional changes; the indentation was off here and it was
confusing me working on another patch.

Closes: #1280
Approved by: jlebon
2017-10-17 16:43:02 +00:00
Colin Walters bc7ff2cd1d lib/commit: Avoid trying to delete `.` with _CONSUME flag
This helps port rpm-ostree.

Closes: #1278
Approved by: jlebon
2017-10-17 16:24:13 +00:00
Colin Walters 93457071cb lib/deltas: Use pread() instead of lseek()+read()
That's why the syscall was invented, so let's use it. Just noticed while reading
the code while working on another patch.

Closes: #1270
Approved by: jlebon
2017-10-17 15:20:08 +00:00
Colin Walters bb05b187b6 lib/deltas: Use fastpath for regfile writes for bare-user-only
Noticed this omission while looking at the code while working on another patch.

Closes: #1270
Approved by: jlebon
2017-10-17 15:20:08 +00:00
Colin Walters 464965e6b4 lib/sysroot: Fix error handling when mounting overlayfs fails
This isn't perfect, but at least we fix an error-overwrite error, and in
practice `ostree admin unlock` isn't wrapped by `rpm-ostree` yet, so spew to
stderr is OK.

Closes: https://github.com/ostreedev/ostree/issues/1273

Closes: #1279
Approved by: guyshapiro
2017-10-17 06:58:22 +00:00
Colin Walters e744f2ad6f lib: Use a common helper function to compare checksums
So we get a consistent error message; came up in a PR review.

Closes: #1277
Approved by: jlebon
2017-10-17 05:06:07 +00:00
Colin Walters 16c31a9b58 lib/commit: Implement "adoption" with CONSUME flag
For checkouts that are on the same device, for regular files we can simply
"adopt" existing files. This is useful in the "build from subtrees" pattern that
happens with e.g. `rpm-ostree install` as well as flatpak and gnome-continuous.

New files are things like an updated `ldconfig` cache, etc. And particularly for
`rpm-ostree` we always regenerate the rpmdb, which for e.g. this workstation is
`61MB`.

We probably should have done this from the start, and instead had a `--copy`
flag to commit, but obviously we have to be backwards compatible.

There's more to do here - the biggest gap is probably for `bare-user` repos,
which are often used with things like `rpm-ostree compose tree` for host
systems. But we can do that later.

Closes: #1272
Approved by: jlebon
2017-10-16 18:22:09 +00:00
Colin Walters 1c108d1b68 lib/pull: Also do commit GPG verification before writing
I was working on a patch to do build on the work done to
import content objects async to do the same for metadata, but right
now we basically rely on writing them first to do the GPG verification
when scanning.

Things will be cleaner for that if we can pass the commit object directly into
`scan_commit_object()` and consistently use `gpg_verify_unwritten_commit()`.

We're careful here to continue to do it both ways (but at most one time), to
account for the case where a bad commit has been pulled and written - we need to
keep failing GPG verification there.

Closes: #1269
Approved by: jlebon
2017-10-16 15:32:39 +00:00
Colin Walters 22029d71c9 lib/pull: Drop duplicate/different error for GPG but no detached meta
Prep for a later patch to do GPG verification before writing commit objects;
`_ostree_repo_gpg_verify_with_metadata()` already handles this, and so dropping
this gives us consistent error messages.

Closes: #1269
Approved by: jlebon
2017-10-16 15:32:39 +00:00
Simon McVittie a4723dafed Cope with xattr syscalls raising EOPNOTSUPP
ENOTSUP and EOPNOTSUPP are numerically equal on most Linux ports,
but inexplicably differ on PA-RISC (hppa) and possibly other
rare architectures.

Signed-off-by: Simon McVittie <smcv@collabora.com>

Closes: #1275
Approved by: cgwalters
2017-10-16 13:08:06 +00:00
Jonathan Lebon 9503189362 lib/checkout: fallback to checksum for UNION_IDENTICAL
There's a subtle issue going on with the way we use `UNION_IDENTICAL`
now in rpm-ostree. Basically, the crux of the issue is that we checkout
the whole tree from the system repo, but then overlay packages by
checking out from the pkgcache repo. This is an easy way to break the
assumption that we will be merging hardlinks from the same repo.

This ends up causing issues like:
https://github.com/projectatomic/rpm-ostree/issues/1047

There, `vim-minimal` is already part of the host and has an object for
`/usr/share/man/man1/ex.1.gz`. `vim-common` has that same file, but
because it's unpacked in the pkgcache repo first, the hardlinks are not
the same.

There are a few ways we *could* work around this in rpm-ostree itself,
e.g. by re-establishing hardlinks when we do the content pull into the
system repo, but it still felt somewhat hacky. Let's just do this the
proper way and fall back to checksumming the target file if needed,
which is what librpm does as well in this case. Note that we only
checksum if they're not hard links, but they're the same size.

Closes: #1258
Approved by: cgwalters
2017-10-14 13:19:18 +00:00
Matthew Leeds 2a9c5efe1d lib/utils: Check for invalid UTF-8 in filenames
In case a filename contains invalid UTF-8 characters, libostree will
pass it to g_variant_builder_add() in create_tree_variant_from_hashes()
anyway, which leads to a critical warning from glib and an invalid
commit. This commit makes ostree print a useful error and exit instead.

Closes: #1271
Approved by: cgwalters
2017-10-14 00:47:40 +00:00
Colin Walters a1986b1a80 lib/deltas: Check cancellable during processing
Let's react to `Ctrl-C` faster here. Noticed while I was doing an update on my
desktop and playing with cancellation.

Closes: #1266
Approved by: jlebon
2017-10-12 15:04:02 +00:00
Jonathan Lebon 077d2718ad lib/core: add ostree_checksum_file_at API
This is like `ostree_checksum_file` but fd-relative. This will be used
by https://github.com/ostreedev/ostree/pull/1258.

AFAICT, we actually didn't have any tests that check the `checksum` CLI.
Add a basic one here to test the old code as well as the new code.

Closes: #1263
Approved by: cgwalters
2017-10-12 12:53:01 +00:00
Jonathan Lebon 60b5925c54 ostree/checksum: port to new decl style
No functional changes, prep for patch. (Well, I did add a new `success`
member in the async struct so that we return `FALSE` if we failed).

Closes: #1263
Approved by: cgwalters
2017-10-12 12:53:01 +00:00
Colin Walters 8f6ec62bfb lib/deploy: Use _exit() for FIFREEZE watchdog
This works around an (IMO) SpiderMonkey bug - it tries to
clean up in a shared library destructor, but doesn't install a
`pthread_atfork()` handler to unset its state.

Closes: https://github.com/ostreedev/ostree/issues/1262

Closes: #1264
Approved by: dbnicholson
2017-10-11 21:24:39 +00:00
Colin Walters 1825f03fe7 tree-wide: Update to new libglnx fd APIs
This ends up a lot better IMO.  This commit is *mostly* just
`s/glnx_close_fd/glnx_autofd`, but there's also a number of hunks like:

```
-  if (self->sysroot_fd != -1)
-    {
-      (void) close (self->sysroot_fd);
-      self->sysroot_fd = -1;
-    }
+  glnx_close_fd (&self->sysroot_fd);
```

Update submodule: libglnx

Closes: #1259
Approved by: jlebon
2017-10-11 19:26:10 +00:00
Colin Walters 3e3d28632d lib/commit: Make -path commit helper API private
It's no longer called directly by the pull code, so make it static.

The goal here is to have the pull and local-fs commit paths use higher level
more efficient APIs, and eventually make those APIs public.

Closes: #1257
Approved by: jlebon
2017-10-11 19:04:46 +00:00
Colin Walters bb51a43d81 lib/core: Use GBytes for file headers
This simplifies a lot of code; the header function was structured
to write to an input stream, but many callers only wanted the checksum,
so it's simpler (and error-free) to simply allocate a whole buffer
and checksum that.

For the callers that want to write it, it's also still simpler to allocate the
buffer and write the whole thing rather than having this function do the
writing.

A lot of the complexity here again is a legacy of the packfile code, which is
dead.

This is prep for faster regfile commits where we can avoid `G{In,Out}putStream`.

Closes: #1257
Approved by: jlebon
2017-10-11 19:04:46 +00:00
Colin Walters d10593e65d lib/core: Port a few functions to decl-after-stmt
No functional changes, just prep for more work.

Closes: #1257
Approved by: jlebon
2017-10-11 19:04:46 +00:00
Colin Walters cd8fc8e37a lib/core: (refactor) Drop wrapper and unneeded args for variant writing
Nothing was using the `bytes_written` data (we always discard partially written
tmpfiles), so simplify everything by dropping it. Further, we always passed an
offset of `0`, so drop that argument too. (I believe that this was previously
used by the "pack files" code that we deleted long ago)

Second, we had an unnecessary internal wrapper for this function; drop that too.

Closes: #1257
Approved by: jlebon
2017-10-11 19:04:46 +00:00
Jonathan Lebon 3604b8152a libotutil/checksum-utils: fix openssl compilation
Closes: #1261
Approved by: cgwalters
2017-10-11 16:05:52 +00:00
Dan Nicholson a5b7660c94 lib/deploy: Ignore FIFREEZE/FITHAW errors when already in state
If the filesystem is already frozen, FIFREEZE returns EBUSY, and if the
filesystem is already thawed, FITHAW returns EINVAL. It's very unlikely
these issues would arise on a real ostree system since the sysroot would
be locked during the freeze/thaw cycle.

However, when multiple fake sysroots are used during the test suite (run
as root), the tests could race to run the freeze/thaw cycle without
locking. Furthermore, there's no reason why an independent process might
be trying to freeze the filesystem while ostree was deploying. Ignore
but warn for these errors since there's not much ostree can do about it,
anyways.

Closes: #1260
Approved by: cgwalters
2017-10-11 15:40:20 +00:00
Colin Walters 1c9975cbd1 lib: Add a lighter weight internal checksum wrapper
The faster (OpenSSL/GnuTLS) code lived in a `GInputStream` wrapper, and that
adds a lot of weight (GObject + vtable calls). Move it into a simple
autoptr-struct wrapper, and use it in the metadata path, so we're
now using the faster checksums there too.

This also drops a malloc there as the new API does hexdigest in place to a
buffer.

Prep for more work in the commit path to avoid `GInputStream` for local file
commits, and ["adopting" files](https://github.com/ostreedev/ostree/pull/1255).

Closes: #1256
Approved by: jlebon
2017-10-10 21:25:40 +00:00
Colin Walters bba7eb8069 commit: Add _CONSUME modifier flag
For many cases of commit, we can actually optimize things by simply "adopting"
the object rather than writing a new copy. For example, in rpm-ostree package
layering.

We can only make that optimization though if we take ownership of the file. This
commit hence adds an API where a caller tells us to do so. For now, that just
means we `unlink()` the files/dirs as we go, but we can now later add the
"adopt" optimization.

Closes: #1255
Approved by: jlebon
2017-10-10 13:02:08 +00:00
Colin Walters fc33ae018d lib/deltas: Move variant read helper into the deltas code
What the deltas code is doing is weird/unfortunate.  The name
`ot_variant_read()` conflicts too much with `ot_variant_read_fd()`.
Since nothing else uses it, move it into the deltas code.

Closes: #1254
Approved by: jlebon
2017-10-05 15:41:00 +00:00
Colin Walters a903f96673 lib/util: Delete some unused functions
Hooray, dead code.

Closes: #1254
Approved by: jlebon
2017-10-05 15:41:00 +00:00
Colin Walters 2e3889a4eb lib/pull: Change fetcher to return O_TMPFILE
A lot of the libostree code is honestly too complex for its
own good (this is mostly my fault).  The way we do HTTP writes
is still one of those.  The way the fetcher writes tempfiles,
then reads them back in is definitely one of those.

Now that we've dropped the "partial object" bits in:
https://github.com/ostreedev/ostree/pull/1176 i.e. commit
0488b4870e
we can simplify things a lot more by having the fetcher
return an `O_TMPFILE` rather than a filename.

For trusted archive mirroring, we need to enable linking
in the tmpfiles directly.

Otherwise for at least content objects they're compressed, so we couldn't link
them in. For metadata, we need to do similar logic to what we have around
`mmap()` to only grab a tmpfile if the size is large enough.

Closes: #1252
Approved by: jlebon
2017-10-05 14:58:20 +00:00
Colin Walters 7f6af94c5a lib/utils: Port a bit to decl-after-stmt style
Add add some more comments.

Closes: #1247
Approved by: jlebon
2017-10-05 13:28:59 +00:00
Philip Withnall 9350e8a488 lib/repo: Clarify that ostree_repo_remote_fetch_summary() doesn’t verify
Make that a bit clearer in the documentation.

Signed-off-by: Philip Withnall <withnall@endlessm.com>

Closes: #1253
Approved by: cgwalters
2017-10-05 12:48:28 +00:00
Colin Walters 5c7d2dd8be Deduplicate and fix up our use of mmap()
Buried in this large patch is a logical fix:

```
-  if (!map)
-    return glnx_throw_errno_prefix (error, "mmap");
+  if (map == (void*)-1)
+    return glnx_null_throw_errno_prefix (error, "mmap");
```

Which would have helped me debug another patch I was working
on.  But it turns out that actually correctly checking for
errors from `mmap()` triggers lots of other bugs - basically
because we sometimes handle zero-length variants (in detached
metadata).  When we start actually returning errors due to
this, things break.  (It wasn't a problem in practice before
because most things looked at the zero size, not the data).

Anyways there's a bigger picture issue here - a while ago
we made a fix to only use `mmap()` for reading metadata from disk
only if it was large enough (i.e. `>16k`).  But that didn't
help various other paths in the pull code and others that were
directly doing the `mmap()`.

Fix this by having a proper low level fs helper that does "read all data from
fd+offset into GBytes", which handles the size check. Then the `GVariant` bits
are just a clean layer on top of this. (At the small cost of an additional
allocation)

Side note: I had to remind myself, but the reason we can't just use
`GMappedFile` here is it doesn't support passing an offset into `mmap()`.

Closes: #1251
Approved by: jlebon
2017-10-04 20:42:39 +00:00
Jonathan Lebon c511ca0fae lib/commit: minor coverity fix
Appease Coverity by using the same condition for both the ternary check
and the if-condition later on. It should be smart enough to figure out
that `dir_enum == NULL` implies that `dfd_iter != NULL` from the
assertion at the top of the function.

Coverity CID: #1457318

Closes: #1250
Approved by: cgwalters
2017-10-04 15:50:38 +00:00
Colin Walters 351ffdb977 lib/sysroot: Fix pointer going out of scope in unlock code
Fixes Coverity CID #1457317

Closes: #1249
Approved by: jlebon
2017-10-04 14:56:31 +00:00
Colin Walters e80efe0b06 lib/core: Init struct stat buffer
Regression from d57410a7e6

Fixes Coverity CID #1457316

Closes: #1249
Approved by: jlebon
2017-10-04 14:56:31 +00:00
Jonathan Lebon 0c36433736 tree: fix compiler warnings
Mostly innocuous warnings, except for -Wtautological-compare, which
caught a shady guint64 subtraction.

Closes: #1245
Approved by: cgwalters
2017-10-04 12:54:53 +00:00
Philip Withnall 43977dffde docs: Clarify %NULL argument to ostree_sysroot_new()
It’s equivalent to ostree_sysroot_new_default().

Signed-off-by: Philip Withnall <withnall@endlessm.com>

Closes: #1246
Approved by: cgwalters
2017-10-04 12:54:23 +00:00
Jonathan Lebon c3c13846ad app/main: use HAVE_LIBCURL_OR_LIBSOUP for pull CLI
We want `pull` to be included as long as we have at least either
`libcurl` or `libsoup` to back it. Of course, this is a moot point for
now since `libsoup` is currently a build requirement.

Closes: #1244
Approved by: cgwalters
2017-10-03 19:42:58 +00:00
Simon McVittie d5964d6850 New upstream version 2017.12 2017-10-03 18:51:37 +01:00
Philip Withnall 86e072bdbe lib/repo-commit: Import detached metadata even if hardlink exists
Spotted while reading through the code, it looks like the
copy_detached_metadata() call is accidentally omitted if a hardlink
already exists for the .commit object.

Signed-off-by: Philip Withnall <withnall@endlessm.com>

Closes: #1242
Approved by: cgwalters
2017-10-03 16:31:13 +00:00
Matthew Leeds 133e9ae733 lib/gpg: Print debug info when reading GPG keys
This commit adds debug output whenever libostree reads GPG keys, which
can come from different locations in the file system. This is especially
helpful in debugging "GPG signatures found, but none are in trusted
keyring" errors, which in my case was caused by OSTree looking in
/usr/local/share/ostree/trusted.gpg.d/ rather than
/usr/share/ostree/trusted.gpg.d/.

Closes: #1241
Approved by: cgwalters
2017-10-03 13:09:33 +00:00
Colin Walters be100e0ee2 lib/pull: Minor cleanup to metadata scanning function, add docs
I'm regretting a bit having the `guint8*csum` variant of checksums
except for the serialized form.  Once we start doing processing
it's easier to just have it remain hex.

Do an on-stack conversion for the metadata scanning function; this
drops a malloc and also just looks nicer.

Also add some long-awaited function comments to the two.

Closes: #1240
Approved by: jlebon
2017-10-02 19:55:54 +00:00
Philip Withnall 030e3efbc4 lib/bloom: Add some missing preconditions on n_bytes
These shouldn’t change the bloom filter’s behaviour at all, but make it
a bit more obvious what the programmatical limitations are on the sizes
it can deal with.

In reality, those sizes should never be reached because they won’t fit
in a DNS-SD record.

Signed-off-by: Philip Withnall <withnall@endlessm.com>

Closes: #1239
Approved by: cgwalters
2017-10-02 18:08:55 +00:00
Colin Walters 9fffc27cfb lib/uboot: Port to fd-relative
Prep for `ostree_sysroot_new_at()`.

Closes: #1237
Approved by: jlebon
2017-10-02 16:19:59 +00:00
Colin Walters fcb1e87f82 lib/syslinux: Port to fd-relative
Prep for `ostree_sysroot_new_at()`.  Also just generally nicer.

Closes: #1237
Approved by: jlebon
2017-10-02 16:19:59 +00:00
Colin Walters b8c15ae859 lib/pull: Fix regression with pull-local for nonexistent refs
I was reading the pull code for the last release, and spotted
a bug in commit f923c2e1ea - in
the case where the ref doesn't exist, we don't set an error,
tripping an assertion in the main code.

The previous code wanted the ref to always exist, so just flip back the boolean
for "ignore noent". I moved the `g_strchomp()` just into the HTTP path - if a
local repo is corrupted in this way it's something to fix in that repo.

Closes: #1238
Approved by: pwithnall
2017-10-02 16:02:28 +00:00
Colin Walters 06c731bfa3 lib/sysroot: Add some more comments
Also avoid gtk-doc style for private functions, as it tries to parse them and
complains since they aren't public.

Closes: #1230
Approved by: jlebon
2017-10-02 15:12:09 +00:00
Colin Walters 7da4c2162d lib/commit: Add some gtk-doc and internal doc comments
Just making more of an effort for this for obvious reasons. We had a few public
APIs not documented too.

Closes: #1230
Approved by: jlebon
2017-10-02 15:12:09 +00:00
Colin Walters 64f3257d88 Release 2017.12
Closes: #1234
Approved by: jlebon
2017-10-02 14:44:34 +00:00
Philip Withnall feeb3548f4 ostree/summary: Generate an ostree-metadata ref when updating summary
This is the new way of publishing repository metadata, rather than as
additional-metadata in the summary file. The use of an ostree-metadata
ref means that the metadata from multiple upstream collections is not
conflated when doing P2P mirroring of many repositories.

The new ref is only generated if the repository has a collection ID set.
The old summary file continues to be generated for backwards
compatibility (and because it continues to be the canonical ref →
checksum map for the repository).

The new code is only used if configured with --enable-experimental-api.

Includes unit tests.

Signed-off-by: Philip Withnall <withnall@endlessm.com>

Closes: #1158
Approved by: cgwalters
2017-10-02 13:39:41 +00:00
Philip Withnall 16aa4d728a ostree/summary: Eliminate redundant gotos from error handling path
There is no error handling to do, so just return everywhere instead.

Signed-off-by: Philip Withnall <withnall@endlessm.com>

Closes: #1158
Approved by: cgwalters
2017-10-02 13:39:41 +00:00
Philip Withnall 1f666eb07d lib/bloom: Fix a -Wconversion warning in OstreeBloom
Compiling with -Wconversion warns on this line, as the conversion from
guint64 to guint8 is implicit (but safe: there is no bug here, since the
implicit cast is applied after the modulus arithmetic).

Make the cast explicit to silence -Wconversion.

Signed-off-by: Philip Withnall <withnall@endlessm.com>

Closes: #1231
Approved by: cgwalters
2017-10-01 12:24:46 +00:00
Philip Withnall 1673601510 lib/bloom: Fix bloom hashing on 32-bit architectures
There was an implicit cast from guint64 to gsize (which is 32-bit on
armhf, for example) before the modulus arithmetic which safely narrows
the index.

Fix that by using a guint64 intermediate variable and making the cast
explicit.

Signed-off-by: Philip Withnall <withnall@endlessm.com>

Closes: #1231
Approved by: cgwalters
2017-10-01 12:24:46 +00:00
Jonathan Lebon 8fe4536257 lib/commit: don't query devino cache for modified files
We can't use the cache if the file we want to commit has been modified
by the client through the file info or xattr modifiers. We would
prematurely look into the cache in `write_dfd_iter_to_mtree_internal`,
regardless of whether any filtering applied.

We remove that path there, and make sure that we only use the cache if
there were no modifications. We rename the `get_modified_xattrs` to
`get_final_xattrs` to reflect the fact that the xattrs may not be
modified.

One tricky bit that took me some time was that we now need to store the
st_dev & st_ino values in the GFileInfo because the cache lookup relies
on it. I'm guessing we regressed on this at some point.

This patch does slightly change the semantics of the xattr callback.
Previously, returning NULL from the cb meant no xattrs at all. Now, it
means to default to the on-disk state. We might want to consider putting
that behind a flag instead. Though it seems like a more useful behaviour
so that callers can only override the files they want to without losing
original on-disk state (and if they don't want that, just return an
empty GVariant).

Closes: #1165

Closes: #1170
Approved by: cgwalters
2017-09-30 00:05:07 +00:00
Colin Walters a7f04a14b5 libarchive: Fix assertion error if used with CANONICAL_PERMISSIONS
I was trying to do a change for rpm-ostree to use
`OSTREE_REPO_COMMIT_MODIFIER_FLAGS_CANONICAL_PERMISSIONS`
for container builds with `bare-user-only,` but hit an assertion here
ultimtely because we weren't setting `standard::type`.

Rather than hand-rolling `GFileInfo` creation, use the stat buffer conversion
code which is more robust and used in multiple places already.

Closes: #1227
Approved by: jlebon
2017-09-28 19:59:24 +00:00
Colin Walters aa067aeafa tree-wide: Bump libglnx, port to new lockfile init
In particular I'd like to get the copy fix in, since it might affect users for
the keyring bits.

Update submodule: libglnx

Closes: #1225
Approved by: jlebon
2017-09-27 20:08:34 +00:00
Colin Walters 5b860fba05 lib/pull: Don't request deltas for unchanged commits
I noticed this while debugging why I was seeing "2 metadata objects" fetched for
a different PR. I knew 1 was detached meta, but the other turned out to be this.

There's no reason to request a delta if the ref is unchanged.

Closes: #1220
Approved by: jlebon
2017-09-27 19:04:11 +00:00
Colin Walters d319e75982 lib/diff: Add compile-time ABI check on 64 bit arches
Like what was done for most of the `ostree-repo.h` values.  Prep
for adding a new option.

Closes: #1223
Approved by: jlebon
2017-09-27 18:20:10 +00:00
Philip Withnall 9d8c1ec7df lib/repo-pull: Fix remote names in refspecs from non-mirror P2P pulls
Propagate the refspec_name from the OstreeRemote returned by an
OstreeRepoFinder through to the set_ref() call.

This changes ostree_repo_pull_with_options() to accept the
previously-disallowed combination of passing override-remote-name in
options and also setting a remote name in remote_name_or_baseurl.
ostree_repo_pull_with_options() will continue to pull using the remote
config named in remote_name_or_baseurl as before; but will now use the
remote name from override-remote-name when it’s setting the refs at the
end of the pull. This is consistent with the documentation for
override-remote-name.

Signed-off-by: Philip Withnall <withnall@endlessm.com>

Closes: #1202
Approved by: cgwalters
2017-09-27 16:38:07 +00:00
Philip Withnall 69e332a0c0 lib/remote: Store name of remote providing keyring for dynamic remotes
When pulling from a dynamic (peer to peer) remote, the remote’s name is
set to a unique, generated string which doesn’t exist in repo/config. If
doing a non-mirror pull, however, we don’t want to use this name in the
refspecs for newly created or updated refs — we want to use the name of
the remote which provided the keyring for the pull (this will be a
remote from repo/config whose collection ID matches that being used for
the peer to peer pull).

Store both names in OstreeRemote. The name to use for refspecs is stored
as refspec_name, and is typically NULL unless it differs from name.

Signed-off-by: Philip Withnall <withnall@endlessm.com>

Closes: #1202
Approved by: cgwalters
2017-09-27 16:38:07 +00:00
Philip Withnall 22c1fdfbd3 lib/repo: Change resolve_keyring_for_collection() to return a remote
Instead of returning just the keyring filename, return the entire
OstreeRemote, which has the keyring filename as one of its members. This
will simplify some upcoming changes, and allows slightly improved debug
logging.

Signed-off-by: Philip Withnall <withnall@endlessm.com>

Closes: #1202
Approved by: cgwalters
2017-09-27 16:38:07 +00:00
Philip Withnall 030d2b1525 lib/repo-pull: Fix a potential minor leak
If override-remote-name is specified in the options to
ostree_repo_pull_with_options(), but the remote_name_or_baseurl argument
is also set to a remote name, the override-remote-name would be leaked.

Note that this is currently an invalid configuration, so this leak is
basically never hit.

Signed-off-by: Philip Withnall <withnall@endlessm.com>

Closes: #1202
Approved by: cgwalters
2017-09-27 16:38:07 +00:00
Colin Walters c6f972406e lib/pull: Add status for imported objects
Followup for recent work in commits:

 - 8a7a359709
 - 1a9a473580

Keep track of how many objects we imported, and print that for `ostree
pull-local` (also do this even if noninteractive, like we did for `pull`).

In implementing this at first I used separate variables for import
from repo vs import from localcache, but that broke some of the
tests that checked those values.

It's easier to just merge them; we know from looking at whether or not
`remote_repo_local` is set whether or not we were doing a "HTTP pull with
localcache" versus a true `pull-local` and can use that when rendering status.

Closes: #1219
Approved by: jlebon
2017-09-27 15:35:11 +00:00
Philip Withnall 2f9f7222a4 lib/repo-pull: Use resolve() instead of list() in fetch_ref_contents()
This is more efficient in the non-collection case; in the collection
case, the implementation of ostree_repo_resolve_collection_ref() needs
to be rewritten to improve efficiency.

Signed-off-by: Philip Withnall <withnall@endlessm.com>

Closes: #1182
Approved by: cgwalters
2017-09-27 14:44:00 +00:00
Philip Withnall 149aec1099 lib/repo-refs: Add first version of ostree_repo_resolve_collection_ref()
This is a parallel for ostree_repo_resolve_rev_ext() which works on
collection–refs. At the moment, the implementation is simple and uses
ostree_repo_list_collection_refs(). In future, it could be rewritten to
check the checksum directly rather than enumerating all
potentially-relevant checksums.

Signed-off-by: Philip Withnall <withnall@endlessm.com>

Closes: #1182
Approved by: cgwalters
2017-09-27 14:44:00 +00:00
Philip Withnall 9546e6795e create-usb: Add a create-usb command to complement OstreeRepoFinderMount
This can be used to put OSTree repositories on USB sticks in a format
recognised by OstreeRepoFinderMount.

Signed-off-by: Philip Withnall <withnall@endlessm.com>

Closes: #1182
Approved by: cgwalters
2017-09-27 14:44:00 +00:00
Philip Withnall f923c2e1ea src/pull: Support local pulls for collection–refs
Previously, collection–refs could only be pulled from a repository if it
had a summary file (which listed them). There was no way to pull from a
local repository which doesn’t have a summary file, and where the refs
were stored as refs/remotes/$remote/$ref, with a config section linking
that $remote to the queried collection ID.

Fix that by explicitly supporting pull_data->remote_repo_local in
fetch_ref_contents().

Signed-off-by: Philip Withnall <withnall@endlessm.com>

Closes: #1182
Approved by: cgwalters
2017-09-27 14:44:00 +00:00
Colin Walters 25a7c4bd4e lib/pull: Default checksum for archive mirror, add TRUSTED_HTTP flag
I now think commit fab1e113db was a mistake;
because it breaks the mental model that at least I'd built up that "local repos
don't have checksums verified, HTTP does".

For example, a problem with this is (with that mental model in place) it's easy
for people who set up mirrors like this to then do local pulls, and at that
point we've done a deployment with no checksum verification.

Further, since then we did PR #671 AKA commit 3d38f03 which is really most of
the speed hit.

So let's switch the default even for this case to doing checksum verification,
and add `ostree pull --http-trusted`. People who are in situations where they
know they want this can find it and turn it on.

Closes: https://github.com/ostreedev/ostree/issues/1211

Closes: #1212
Approved by: jlebon
2017-09-26 18:07:43 +00:00
Colin Walters b6507a930e lib/pull: Refactor to use OstreeRepoImportFlags internally
Rather than carrying two booleans, just convert `OstreeRepoPullFlags`
into `OstreeRepoImportFlags`.  This allows us to drop an internal
wrapper function and just directly call `_ostree_repo_import_object()`.

This though reveals that our mirroring import path doesn't check the
`OSTREE_REPO_PULL_FLAGS_UNTRUSTED` flag...it probably should.

Prep for further work.

Closes: #1212
Approved by: jlebon
2017-09-26 18:07:43 +00:00
Colin Walters 72ddd4f419 lib/pull: Minor refactoring of metadata scanning function
Make the "local repo" processing conditional the same as the "localcache" bits;
this is really just a de-indent. Also add some comments. Prep for further work.

Closes: #1212
Approved by: jlebon
2017-09-26 18:07:43 +00:00
Colin Walters d0d27288da bin/pull: Fix description of --untrusted
It means *do* verify for local.

Closes: #1212
Approved by: jlebon
2017-09-26 18:07:43 +00:00
Jonathan Lebon e44631ecc3 lib/commit: fix using uninitialized var
Noticed this while reading the code. The `child` var hasn't been
initialized yet at the time we throw this error (and even then, it's
only conditionally initialized). To be nice, let's just always calculate
the child path and pass that along.

Also do some minor style porting to decl near use.

Closes: #1216
Approved by: cgwalters
2017-09-26 17:17:50 +00:00
Jonathan Lebon e5c86fad5c lib/commit: add comments to explain dir commit path
Add a few comments for each of the central functions used for committing
data from a directory. Took me a bit to understand the relationship
between those functions.

Closes: #1216
Approved by: cgwalters
2017-09-26 17:17:50 +00:00
Colin Walters 8a7a359709 lib/commit: Add a copy fastpath for imports
This fixes up the last of the embarassing bits I saw from
the stack trace in:
https://github.com/ostreedev/ostree/issues/1184

We had a hardlink fast path, but that doesn't apply across
devices, which occurs in two notable cases:

 - Installer ISO with local repo
 - Tools like pungi that copy the repo to a local snapshot

Obviously there are a lot of subtleties here around things like the
bare-user-only conversions as well as exactly what data we copy. I think to get
better test coverage we may want to add `pull-local --no-hardlink` or so.

Closes: #1197
Approved by: jlebon
2017-09-26 16:50:41 +00:00
Colin Walters 3a08f7159d lib/commit: Some misc porting to decl-after-stmnt
Just happened to have this file open.

Closes: #1214
Approved by: jlebon
2017-09-26 13:31:05 +00:00
Philip Withnall cd70aaac11 lib/repo-finder-mount: Add var/lib/flatpak as a well-known directory
Add this as an additional well-known directory which is checked on
mounted removable drives to see if it contains OSTree repos we can pull
refs from.

Signed-off-by: Philip Withnall <withnall@endlessm.com>

https://github.com/ostreedev/ostree/issues/1210

Closes: #1213
Approved by: cgwalters
2017-09-25 18:06:51 +00:00
Jussi Laako f91acf5226 Add --with-crypto=gnutls
Introduce support for GnuTLS for computing cryptograpic
hashes, similar to the OpenSSL backend.  A reason to do
this is some distributors want to avoid GPLv3, and GPG
pulls that in.

A possible extension of using GnuTLS would be replacing the GPG signing
with `PKCS#7` signatures and `X.509` keys.

We also support `--with-crypto=openssl`, which has the same effect
as `--with-openssl`, and continues to be supported.

Changes by Colin Walters <walters@verbum.org>:

 - Drop libgcrypt option for now
 - Unify buildsystem on --with-crypto

Link: https://mail.gnome.org/archives/ostree-list/2017-June/msg00002.html

Signed-off-by: Jussi Laako <jussi.laako@linux.intel.com>

Closes: #1189
Approved by: cgwalters
2017-09-25 12:58:54 +00:00
Colin Walters ee5ecf33a5 lib: Define an alias OSTREE_REPO_MODE_ARCHIVE
For the old `OSTREE_REPO_MODE_ARCHIVE_Z2`.  Use it mostly tree
wide except for the repo finder tests (to avoid conflicting with
some outstanding PRs).

Just noted another user coming in some of those tests and wanted to do a
cleanup.

Closes: #1209
Approved by: jlebon
2017-09-21 22:17:55 +00:00
Colin Walters 1797aff6a8 lib/core: Add static assertions for OstreeRepoMode enum values
Prep for adding an alias.

Closes: #1209
Approved by: jlebon
2017-09-21 22:17:55 +00:00