Commit Graph

599 Commits

Author SHA1 Message Date
Matthew Leeds 7ed881baa7 lib/repo-refs: Include remote refs when using collections
When working with collections it can be useful to see remote refs rather
than just local and mirrored ones. This commit changes the "ostree refs
-c" output to include remote refs, and includes remote refs with
collection IDs in summary file generation as well. The former behavior
is consistent with how "ostree refs" works, and the latter behavior is
useful in facilitating P2P updates even when mirrors haven't been
configured.

To accomplish this, OstreeRepoListRefsExtFlags was extended with an
EXCLUDE_REMOTES flag. This was done rather than an INCLUDE_REMOTES flag
so that existing calls to ostree_repo_list_refs_ext continue to have the
same behavior. This flag was added to ostree_repo_list_collection_refs
(which is an experimental API break).

Also, add unit tests for the "refs -c" and summary file behavior, and
update relevant tests.

Closes: #1069
Approved by: cgwalters
2017-08-24 19:57:33 +00:00
Colin Walters 95bac299e5 lib/repo: Add some assertions for ABI sizes
Things like https://sourceware.org/libabigail/manual/abidiff.html
look interesting but in a brief look I couldn't work out
how to conveniently use them for quick ABI sanity checking without
doing a diff from a previous build (which we could do but would be
more involved).

This way will at least catch struct ABI breaks on x86_64 which
I think we'd be most likely to do accidentally when trying
to use one of the previous unused values.

I found the hole values via gdb's `pahole` command.

Closes: #1108
Approved by: jlebon
2017-08-24 14:58:51 +00:00
Colin Walters fd98bda3c7 repo: Introduce ostree_repo_open_at() and ostree_repo_create_at()
This essentially completes our fd-relative conversion.

While here, I cleaned up the semantics of `ostree_repo_create()` and
`ostree_repo_create_at()` to be more atomic - basically various scripts were
testing for the `objects` subdirectory, so let's formalize that.

Closes: #820
Approved by: jlebon
2017-08-15 12:35:10 +00:00
Philip Withnall 75bce24cb9 lib/gpg-verify: Add an OstreeGpgError error domain
Add a new error domain for GPG signing/verification errors, and use it
throughout libostree for describing verification errors. This replaces
various uses of G_IO_ERROR_FAILED, and one instance of
G_IO_ERROR_NOT_FOUND (for which some code in ot-builtin-show.c had to be
changed to ensure it was still handled correctly).

The use of a separate error domain allows failures in GPG operations to
be handled separately from network failures (where the summary file
could not be found to be downloaded, for example) or timeouts.

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

Closes: #1064

Closes: #1071
Approved by: mbarnes
2017-08-10 13:38:40 +00:00
Colin Walters 9f8f351cd4 lib: Port gpg verification for remotes to fd-relative
This was the last use of `repo->repodir` internally, and will help finally add
`ostree_repo_open_at()`.

Closes: #1034
Approved by: jlebon
2017-08-08 15:50:25 +00:00
Colin Walters b929b620ae tree-wide: Use g_autoptr(Ostree*)
Part of cleaning up our usage of libglnx; we want to use what's in GLib where we
can.

Had to change a few .c files to `#include ostree.h` early on to pick up
autoptrs for the core types.

Closes: #1040
Approved by: jlebon
2017-08-03 13:48:12 +00:00
Colin Walters ded6417aee lib/gpg: Switch to GLib autocleanups for gpgme types
Prep for dropping `GLNX_DEFINE_CLEANUP_FUNCTION` from libglnx
in favor of using GLib's `G_DEFINE_AUTO_CLEANUP_FREE_FUNC()`.

Closes: #1042
Approved by: jlebon
2017-08-02 16:55:38 +00:00
Colin Walters 0985158be7 Update libglnx, port some uses to newer APIs
Mostly for the latest `-Wmaybe-uninitialized` fix, but while here also port some
places to newer APIs.

Update submodule: libglnx

Closes: #1027
Approved by: jlebon
2017-07-24 18:43:57 +00:00
Colin Walters 779f125cbe lib/repo: Auto-recreate repo/tmp if it's deleted
We can accumulate a lot of space there; let's be nice to people who delete the
whole directory.

Closes: https://github.com/ostreedev/ostree/issues/1018

Closes: #1020
Approved by: jlebon
2017-07-19 15:01:19 +00:00
Colin Walters 2a9689b76a Update libglnx, port various bits to new API
Using the error prefixing in the delta processing allows us to
do new code style.  Also strip trailing whitespace.

Use error prefixing in a few other random places.  I didn't
hunt for all of them, just testing out the new API.

Use `glnx_fchmod()`.  Also note I dropped one `fchmod (tmpf, 0600)`
which is no longer necessary.

Update submodule: libglnx

Closes: #1011
Approved by: jlebon
2017-07-18 19:18:38 +00:00
Colin Walters e0346c1494 Add a notion of "physical" sysroot, use for remote writing
(Note this PR was reverted in <https://github.com/ostreedev/ostree/pull/902>;
 this version should be better)

Using `${sysroot}` to mean the physical storage root: We don't want to write to
`${sysroot}/etc/ostree/remotes.d`, since nothing will read it, and really
`${sysroot}` should just have `/ostree` (ideally). Today the Anaconda rpmostree
code ends up writing there. Fix this by adding a notion of "physical" sysroot.
We determine whether the path is physical by checking for `/sysroot`, which
exists in deployment roots (and there shouldn't be a `${sysroot}/sysroot`).

In order to unit test this, I added a `--sysroot` argument to `remote add`.
However, doing this better would require reworking the command line parsing for
the `remote` argument to support specifying `--repo` or `--sysroot`, and I
didn't quite want to do that yet in this patch.

This second iteration of this patch fixes the bug we hit the first time;
embarassingly enough I broke `ostree remote list` finding system remotes.
The fix is to have `ostree_repo_open()` figure out whether it's the same
as `/ostree/repo` for now.

Down the line...we might consider having the `ostree remote` command line itself
instatiate an `OstreeSysroot` by default, but this maximizes compatibility; we
just have to pay a small cost that `ostree` usage outside of that case like
`ostree static-delta` in a releng Jenkins job or whatever will do this `stat()`
too.

Closes: https://github.com/ostreedev/ostree/issues/892

Closes: #1008
Approved by: mbarnes
2017-07-18 18:58:06 +00:00
Colin Walters 23b93a3eb6 lib/repo: Immediately error creating bare-user repo on tmpfs
And in general, if for some reason we can't write `user.` xattrs, provide an
error immediately rather than doing it during a later pull. This way the failure
cause is a lot more obvious.

Related: https://github.com/ostreedev/ostree/issues/991

Closes: #993
Approved by: jlebon
2017-07-06 14:31:37 +00:00
Colin Walters 1f5ce1a9f7 lib/repo: Add min-free-space-percent option, default 3%
For ostree-as-host, we're the superuser, so we'll blow past
any reserved free space by default.  While deltas have size
metadata, if one happens to do a loose fetch, we can fill
up the disk.

Another case is flatpak: the system helper has similar concerns
here as ostree-as-host, and for `flatpak --user`, we also
want to be nice and avoid filling up the user's quota.

Closes: https://github.com/ostreedev/ostree/issues/962

Closes: #987
Approved by: jlebon
2017-07-04 16:15:11 +00:00
Philip Withnall acace571ef lib/repo: Fix repo-finder deleting remote configs when run
An inverted condition in _ostree_repo_add_remote() was causing the
OstreeRepoFinder to delete precisely the wrong remote
configurations from memory once it was finished. It’s supposed to delete
the ones which it transiently added; but was instead deleting all the
existing remote configurations.

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

Closes: #985
Approved by: cgwalters
2017-06-29 23:49:25 +00:00
Colin Walters d57410a7e6 lib: Add a helper to convert struct stat → GFileInfo
It's more natural for a few calling places. Prep for patches to go the other
way, which in turn are prep for adding a commit filter v2 that takes `struct
stat`.

`ot_gfile_type_for_mode()` was only used in this function, so inline it here.

Closes: #974
Approved by: jlebon
2017-06-29 18:17:28 +00:00
Colin Walters 250e305f73 lib/repo: Port bareuser-conversion stat to bare load
I noticed this is a simple call that's useful to port to the new internal-only
non-allocating API.

Closes: #977
Approved by: jlebon
2017-06-29 15:07:49 +00:00
Colin Walters 5776d5dcc0 Port to GLnxTmpfile
There's lots of mechanically replacing `OtTmpFile` with `GLnxTmpfile`;
the biggest changes are in the commit path.  Symlink commits are now
very clearly separated from regular files.  Symlinks are `OtCleanupUnlinkat`,
and regular files are `GLnxTmpfile`.

The commit codepath separates those as `_ostree_repo_commit_path_final()` and
`_ostree_repo_commit_tmpf_final()`. A nice aspect of all of this is that they
both *consume* the temporary on success. This avoids an extra spurious
`unlink()` call.

One of the biggest bits of code motion is in `commit_loose_regfile_object()`,
which no longer needs to care about symlinks. For the most parth though it's
just removing conditionals.

Update submodule: libglnx

Closes: #958
Approved by: jlebon
2017-06-27 22:02:14 +00:00
Philip Withnall 2f297ba4d3 lib/repo: Fix a typo in a documentation comment
Looks like a copy-paste error.

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

Closes: #961
Approved by: cgwalters
2017-06-27 19:19:32 +00:00
Philip Withnall fbf8df8829 lib/refs: Add methods for setting/listing collection–refs
These are tuples of (collection ID, ref name) which are a globally-unique
form of local ref. They use OstreeCollectionRef as an identifier, and hence
need to be accessed using new API, as the existing API uses string
identifiers and sometimes accepts refspecs. Remote names are not
supported as part an OstreeCollectionRef.

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

Closes: #924
Approved by: cgwalters
2017-06-26 15:56:07 +00:00
Philip Withnall 4de736fdfa lib/repo: Add collection ID support to OstreeRepo
Add {get,set}_collection_id() methods to OstreeRepo and some documentation
about the concept of a collection ID which globally identifies an
upstream repository. See the documentation for more details.

This will be used in future commits. For now, the new API is marked as
experimental (--enable-experimental-api).

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

Closes: #924
Approved by: cgwalters
2017-06-26 15:56:07 +00:00
Philip Withnall bf1f8eb0fa lib/repo: Split out ref handling from regenerate_summary()
This will make some future additions to regenerate_summary() easier.
This commit introduces no functional changes.

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

Closes: #924
Approved by: cgwalters
2017-06-26 15:56:07 +00:00
Colin Walters 612c8a5fa8 lib/repo: More cleanup of load_file() internals
This is followon work from previous cleanups.  Basically
`stat_bare_content_object()` was the `fstatat()` logic
and `ostree_repo_read_bare_fd()` was the `openat()` implementation;
they duplicated some bits to find the object in staging, recurse
into parent etc.

Further, I wanted an internal-only version of this API which didn't allocate
`GFileInfo`/`GInputStream` but used a plain `fd` and `struct stat` to avoid
mallocs.

The end version here I think looks a lot nicer, since we deduplicate the various
`open()` calls in the different cases for example.

Closes: #952
Approved by: jlebon
2017-06-23 18:29:51 +00:00
Colin Walters 63ad289a9c lib/repo: Split archive/bare file parsing
Prep for future cleanup patches (in particular I want an internal-only
version at first that uses a fd+`struct stat`) to avoid allocations.

The new version avoids lots of deep nesting of conditionals as well
by hoisting the "not found" handling to an early return.

There's a bit of code duplication between the two cases but it's
quite worth the result.

Closes: #951
Approved by: jlebon
2017-06-23 14:11:36 +00:00
Colin Walters 46e7f08daa repo: Squash a gcc `-Wmaybe-uninitialized` warning
It's spurious, but unfortunately GCC doesn't currently understand that it will
always be set.

Closes: #943
Approved by: jlebon
2017-06-20 22:27:18 +00:00
Philip Withnall 20dc9454b3 lib/core: Add ostree_validate_remote_name() for remote names
There are a few places in the code where ad-hoc validation was being
performed. Might as well formalise it a bit more.

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

Closes: #948
Approved by: cgwalters
2017-06-20 21:52:22 +00:00
David Shea 22e753176e lib/repo: Fix annotations for out parameters
Change the annotation of the out parameters on ostree_repo_load_file
from `(allow-none)` to `(optional) (nullable)`. `allow-none` is
ambiguous, since these parameters can be both NULL on input and set to
NULL on return.

Closes: #939
Approved by: cgwalters
2017-06-19 13:15:19 +00:00
Colin Walters 74e3581ed6 lib/repo: Support hardlink conversions from bare-user to bu-only
Thinking about the problem of flatpak converting from `bare-user` to `bare-user-only`
"in place" by creating a new repo and doing a `pull-local`, I realized
that we can optimize this process by doing hardlinks for both metadata
and regular files.  The repo formats are *almost* compatible, the
exception being symlinks.

An earlier patch caused us to do hardlinks for metadata, this patch takes things
to the next step and special cases this specific conversion. In this case we
need to parse the source object to determine whether or not it's a symlink.

Closes: #922
Approved by: alexlarsson
2017-06-13 12:02:12 +00:00
Colin Walters b614c65eab lib/repo: Import metadata via hardlink even for distinct repo modes
Our previous logic for import-via-hardlink only tried if the repo modes match,
but we *can* hardlink metadata between e.g. `archive` and `bare-user` repos, and
that's quite useful thing to do. Our documentation encourages converting to/from
those repo modes locally for build systems.

Closes: #922
Approved by: alexlarsson
2017-06-13 12:02:12 +00:00
Colin Walters 695771667c lib/repo: Skip import via hardlink if repo owners don't match
Before this, if one had repos of matching mode but different owners,
which could happen if one e.g. makes a `bare` non-root repo in
`/ostree/deploy/$stateroot/var/tmp`, every time we tried to call `linkat()`
we'd get `EPERM` and fall back to a copy.

Fix this by saving the repo owner uid, and avoid trying to call `linkat()` if we
know it's going to fail. Of course most commonly in this scenario we'll
immediately fail trying to `chown` the files to `0`, but this is prep for a
future patch to improve `bare-user` → `bare-user-only` imports where we'll be a
bit more sophisticated.

Closes: #922
Approved by: alexlarsson
2017-06-13 12:02:12 +00:00
Alexander Larsson 7159bed8e1 lib/repo: Always look in staging directory for objects
Its often the case that we want to look at objects inside a commit,
before the objects the transaction is finished. For instance:
  https://github.com/flatpak/flatpak/pull/837
Which tries to verify the file permissions before committing the
transaction.

And:
  1e5ffa926a
Which collects the storage size of the objects so that we can
put the total download size in the commit metadata.

I tried to find all the places where we did reads from the
object directories, and in particular this fixes:

 - `ostree_repo_load_file()` for `bare` repos (`archive` was already working).
 - `ostree_repo_query_object_storage_size()`
 - Applying deltas that reference not-yet-commited objects

Closes: #916
Approved by: cgwalters
2017-06-13 00:47:42 +00:00
Colin Walters 848b7c0201 lib/repo: Refactor object copy import function
This came up in: https://github.com/ostreedev/ostree/pull/881

Basically doing streaming for metadata is dumb. Split up the metadata/content
paths so we pass metadata around as `GVariant`. This drops the last internal
caller of `ostree_repo_write_metadata_stream_trusted()` which was the dumb
function mentioned.

Closes: #923
Approved by: jlebon
2017-06-12 21:13:23 +00:00
Colin Walters 5de201df26 repo: Fix leak of superblock fds when generating summary
Related: https://github.com/ostreedev/ostree/issues/920

Closes: #921
Approved by: alexlarsson
2017-06-12 14:15:14 +00:00
Philip Withnall 59ffce73c8 lib/repo: Omit deltas from the summary file if there are none
If there are no deltas to be listed in the summary file, don’t bother
including the key for them in the additional metadata section of the
file. This saves a few bytes in some cases.

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

Closes: #911
Approved by: cgwalters
2017-06-07 16:55:35 +00:00
Philip Withnall 12479d8b05 lib/repo: Reindent some code in regenerate_summary() for clarity
This makes it a bit more easily separable from the rest of the code in
the function. No functional changes.

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

Closes: #911
Approved by: cgwalters
2017-06-07 16:55:35 +00:00
Owen W. Taylor 25696b3fb0 lib/repo: Don't copy xattrs when manipulating the GPG keyring
Copying xattrs when manipulating the GPG keyring for a repository
causes errors when the underlying filesystem doesn't support writing
xattrs - overlayfs is a common example. It also causes the selinux
attributes of the keyring files to be copied from the temporary
location instead of properly inherited from the destination directory
(ending up, for example, as unconfined_u:object_r:user_tmp_t:s0, rather
than unconfined_u:object_r:data_home_t:s0)

Closes: #910
Approved by: cgwalters
2017-06-07 13:43:51 +00:00
Colin Walters cad42d9601 Revert "Add a notion of "physical" sysroot, use for remote writing"
This reverts commit 1eff3e8343. There
are a few issues with it.  It's not a critical thing for now, so
let's ugly up the git history and revisit when we have time to
debug it and add more tests.

Besides the below issue, I noticed that the simple `ostree remote add`
now writes to `/ostree/repo/config` because we *aren't* using the
`--sysroot` argument.

Closes: https://github.com/ostreedev/ostree/issues/901

Closes: #902
Approved by: mike-nguyen
2017-06-02 14:11:58 +00:00
Colin Walters 1eff3e8343 Add a notion of "physical" sysroot, use for remote writing
Using `${sysroot}` to mean the physical storage root: We don't want to write to
`${sysroot}/etc/ostree/remotes.d`, since nothing will read it, and really
`${sysroot}` should just have `/ostree` (ideally). Today the Anaconda rpmostree
code ends up writing there. Fix this by adding a notion of "physical" sysroot.
We determine whether the path is physical by checking for `/sysroot`, which
exists in deployment roots (and there shouldn't be a `${sysroot}/sysroot`).

In order to unit test this, I added a `--sysroot` argument to `remote add`.
However, doing this better would require reworking the command line parsing for
the `remote` argument to support specifying `--repo` or `--sysroot`, and I
didn't quite want to do that yet in this patch.

Closes: https://github.com/ostreedev/ostree/issues/892

Closes: #896
Approved by: jlebon
2017-06-01 18:15:56 +00:00
Colin Walters ed430b45de lib: Add an "is_system" member to OstreeRepo
This is prep for introducing a fd-relative `ostree_repo_new_at()`.
Previously, `ostree_repo_is_system()` compared `GFile` paths, but
there's a much simpler check we can do first - if this repository
was created via `OstreeSysroot`, it must be a system repo.

Closes: #886
Approved by: jlebon
2017-05-26 19:17:59 +00:00
Philip Withnall 242a0fd779 lib/repo: Make ost_repo_remove_remote() available internally
Make it an internal, not static, API; like _ostree_repo_add_remote(). It
will be used in many the same situations.

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

Closes: #875
Approved by: cgwalters
2017-05-19 15:01:59 +00:00
Philip Withnall b6ac28b0da lib/repo: Add return value to _ostree_repo_add_remote()
Return whether the remote already existed. This is an internal API, so
it’s not an API break. The return value will be useful in upcoming
commits for working out whether to later remove a remote again.

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

Closes: #875
Approved by: cgwalters
2017-05-19 15:01:59 +00:00
Philip Withnall ed7905d000 lib/remote: Add arguments to internal OstreeRemote constructor
Add a name argument to the internal OstreeRemote constructor,
since this member (and several derived from it) is non-nullable,
and hence must always be set at construction time.

This changes the only call sites of the constructor to use the new API,
which is internal.

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

Closes: #875
Approved by: cgwalters
2017-05-19 15:01:59 +00:00
Colin Walters 9380dbb14d lib: Add "open dfd iter handling noent" helper, port tree-wide
Follow up to a previous patch that addressed a double-close; I
realized we already had a helper for doing "open dfd iter, do nothing
if we get ENOENT".  Raise it to libotuil, and port all consumers.

Closes: #863
Approved by: jlebon
2017-05-16 18:39:19 +00:00
Colin Walters 19827a9965 lib/repo: Fix double close()
Should probably change `_take_fd()` to take a pointer and set to `-1`
at some point.

Regression from 8d58ab1002

Closes: #862
Approved by: jlebon
2017-05-16 14:01:24 +00:00
Jonathan Lebon 23c60cda22 libglnx: bump and use new helper methods
Update submodule: libglnx

Closes: #857
Approved by: cgwalters
2017-05-12 21:02:16 +00:00
Colin Walters 0177214982 lib/repo: Port more of GPG and summary functions to new code style
These ones were pretty easy, not sure why I didn't do them in an earlier pass.

Closes: #849
Approved by: jlebon
2017-05-11 15:26:49 +00:00
Colin Walters 964ca9d434 repo: Fix double close() in summary generation
Happened to notice this while doing a style port.

Closes: #849
Approved by: jlebon
2017-05-11 15:26:49 +00:00
Philip Withnall 6eac575f21 libostree: Make OstreeRemote a public and internal API
Previously it was static to ostree-repo.c. Make it usable throughout
libostree so it can be used by an upcoming commit, but also expose the
typedef and reference counting functions so that opaque OstreeRemote
pointers can be used by user code, in anticipation of exposing more of
its API publicly in future.

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

Closes: #832
Approved by: cgwalters
2017-05-08 18:48:07 +00:00
Philip Withnall 9aa8d420cf libostree: Add some additional metadata to the summary file
• Commit timestamps, so it’s easy to work out whether a given commit is
   newer than the one we have locally
 • Summary file timestamp, so it’s easy to work out whether the summary
   file is more up to date than another summary file
 • Summary file expiry time, so clients can work out when they should
   expect the summary file to next be updated, and hence can query for
   it at roughly the right time

The expiry time requires input from the user, so is currently never set
automatically. Programs using libostree can set it if they wish.

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

Closes: #826
Approved by: cgwalters
2017-05-08 00:55:24 +00:00
Colin Walters 712bf21914 tree-wide: Convert to using autoptr(GString) vs g_string_free(...,TRUE)
If we're freeing the segment, it's basically always better to use
`autoptr()`.  Fewer lines, more reliable, etc.

Noticed an instance of this in the pull code while reviewing a different PR,
decided to do a grep for it and fix it tree wide.

Closes: #836
Approved by: pwithnall
2017-05-05 15:10:51 +00:00
Colin Walters 4f80548454 repo: Delete the last use of GFile tmp_dir
The keyring isn't large, so let's just fall back to copying it
rather than requiring `renameat()`.

Prep for `ostree_repo_open_at()`.

Closes: #821
Approved by: jlebon
2017-05-01 16:44:59 +00:00
Philip Withnall cbe3989b2b libostree: Get and set OstreeAsyncProgress:status atomically
Use the new well-known `status` key for OstreeAsyncProgress to get and
set the status atomically with other keys in an OstreeAsyncProgress
instance.

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

Closes: #819
Approved by: cgwalters
2017-04-29 11:50:15 +00:00
Philip Withnall cdf876101b src: Port to new OstreeAsyncProgress atomic API
This will eliminate most of the potential races in progress reporting.
ostree_repo_pull_default_console_progress_changed() still calls three
getters, so there may still be races there, however.

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

Closes: #819
Approved by: cgwalters
2017-04-29 11:50:15 +00:00
Colin Walters 20b0836ec8 repo: Fix incorrect use of errno() error throwing
I happened to glance at the top of my most recent patch and
noticed that I used an `throw_errno()` function in a non-errno place.
I scanned the patch for other instances of this but didn't find one.

Closes: #811
Approved by: jlebon
2017-04-26 13:27:16 +00:00
Colin Walters 3d1b47803f repo: More porting to new style
I was planning to change some of the object loading code in the
future, so here's some porting.

Note that I rewrote `_ostree_repo_has_loose_object()` since it
used an error return across multiple functions.

Honestly I'm not sure about this `TEMP_FAILURE_RETRY()` business...
in reality we're going to end up with a ton of code linked in
process that doesn't do it.  Unix sucks =(  But I'm keeping
what was there out of consistency.

Closes: #809
Approved by: jlebon
2017-04-25 20:01:13 +00:00
Colin Walters 8d58ab1002 repo: Port object listing func to use libglnx more + new style
This did a `closedir` in the `goto out` section before, but it
turns out more nicely if we follow the usual pattern of doing
the `open(O_DIRECTORY)` in the callee function and handle `ENOENT`
there.

Closes: #809
Approved by: jlebon
2017-04-25 20:01:13 +00:00
Colin Walters b7afe91e21 repo/checkout: Cache lookups of dirmeta objects
I was reading a strace the other day and noticed we were loading the same
`.dirmeta` object many times. Unlike the other object types, `.dirmeta` objects
don't accumulate much over time; there are only so many directory metadata types.
(Without SELinux involved it'd probably be 5-6 I'd guess offhand).

For `fedora-atomic/25/x86_64/docker-host` there are currently 34 `.dirmeta` in
the tree.

But how many times during a checkout did we load those 34 dirmeta objects?
With a quick strace:

```
$ strace -s 2048 -f -o strace.log ostree --repo=repo-build checkout -U fedora-atomic/25/x86_64/docker-host host-test-checkout
$ grep dirmeta strace.log | wc -l
7165
```

After, as you'd expect, we just loaded `34` from disk.  We do
6 system calls (`openat+fstat+fstat+read+read+close`) per dirmeta,
so we dropped a total of 42780 system calls - which is about 20% of the total
system calls made.

`perf record` tells me that we're spending ~40 of our time in the kernel during
a checkout, so reducing syscall traffic helps. Though most of that appears to be
in the VFS and XFS layers for `linkat` (which isn't surprising).

So how much did perf improve? Well, on my workstation, I get a lot of
fluctuation in timing, sometimes by 30%, so this was well within the noise. But
it's well worth speeding up checkout, and I think this optimization will shine
more as we improve performance elsewhere.

Closes: #795
Approved by: jlebon
2017-04-25 13:40:53 +00:00
Colin Walters 4fc65b808a repo: Drop unused cache variables leftover from pack files
These are leftovers from the packfile code and should have been
deleted in commit: 2a0601efc7

I noticed this now since I wanted to add a new type of caching.

Closes: #795
Approved by: jlebon
2017-04-25 13:40:53 +00:00
Colin Walters f2e92d81f9 lib/util: Delete some leftover pre-libglnx directory opening functions
These were migrated into libglnx; port the few callers to use that.

Closes: #808
Approved by: jlebon
2017-04-25 13:30:07 +00:00
Colin Walters 49a525f6a5 repo: Optimize bare-user content object reads a bit
`perf record ostree checkout ...` for a bare-user repo was telling
me we were spending a good 13% of our time in the depchain of `ot_lgexattrat()`.
The problem here is that traversing the `/proc` path turns out to be
somewhat expensive - there are LSM (SELinux) checks, etc.

For regular files, opening and just getting the xattr, then closing is still
quite cheap. For symlinks, we'll always need to open anyways.

This appears to shave about ~0.1 seconds off of a checkout of
`fedora-atomic/25/x86_64/docker-host` on my workstation.

Oh, and this was the last user of `ot_lgexattrat()` so we can kill it, which is
nice - the xattr code should really live in libglnx.

Closes: #796
Approved by: jlebon
2017-04-19 15:00:08 +00:00
Colin Walters a0e15ecbed repo/core: Convert some functions to new code style
I was planning to change one here, decided to do a conversion
of some of the simpler functions in this file to keep up momentum.

Closes: #776
Approved by: jlebon
2017-04-05 17:57:20 +00:00
Colin Walters c937305c0e core: Fix default value of disable_xattrs
Sigh.  Rather awful regression from https://github.com/ostreedev/ostree/pull/759

Closes: #775
Approved by: jlebon
2017-04-04 15:54:46 +00:00
Alexander Larsson be28c10849 Add bare-user-only repo mode
This mode is similar to bare-user, but does not store the permission,
ownership (uid/gid) and xattrs in an xattr on the file objects in the
repo. Additionally it stores symlinks as symlinks rather than as
regular files+xattrs, like the bare mode. The later is needed because
we can't store the is-symlink in the xattr.

This means that some metadata is lost, such as the uid. When reading a
repo like this we always report uid, gid as 0, and no xattrs, so
unless this is true in the commit the resulting repository will
not fsck correctly.

However, it the main usecase of the repository is to check out with
--user-mode, then no information is lost, and the repository can
work on filesystems without xattrs (such as tmpfs).

Closes: #750
Approved by: cgwalters
2017-03-27 13:48:41 +00:00
Alexander Larsson 612150f143 Add _ostree_repo_mode_is_bare helper
This cleans up some existing code, but it also allows us to later
add new bare modes.

Closes: #750
Approved by: cgwalters
2017-03-27 13:48:41 +00:00
Colin Walters 455cc5e892 repo+tests: Add [core]disable-xattrs=true, use it on overlayfs
There are a lot of things suboptimal about this approach, but
on the other hand we need to get our CI back up and running.

The basic approach is to - in the test suite, detect if we're on overlayfs. If
so, set a flag in the repo, which gets picked up by a few strategic places in
the core to turn on "ignore xattrs".

I also had to add a variant of this for the sysroot work.

The core problem here is while overlayfs will let us read and
see the SELinux labels, it won't let us write them.

Down the line, we should improve this so that we can selectively ignore e.g.
`security.*` attributes but not `user.*` say.

Closes: https://github.com/ostreedev/ostree/issues/758

Closes: #759
Approved by: jlebon
2017-03-24 22:16:43 +00:00
Colin Walters 4cf210b128 Bump libglnx, port a few callers to new error API
Testing out the waters here. I think we should roll this into any future code
cleanup reworking we do.

Closes: #747
Approved by: jlebon
2017-03-22 16:04:58 +00:00
Colin Walters 0b214566a2 lib: Squash most of the gtk-doc warnings for missing parameters
This isn't all of them, just trying to make a dent.

Closes: #734
Approved by: jlebon
2017-03-13 15:20:45 +00:00
André Klitzing 75907cb513 Fix includes if built against musl
LOCK_* is defined in sys/file.h

http://git.musl-libc.org/cgit/musl/tree/include/sys/file.h

Closes: #730
Approved by: cgwalters
2017-03-10 22:11:47 +00:00
Colin Walters 3219a5d0ee Allow and start using C99 declaration-after-statement
I've seen code in a few places that I think on balance is definitely better this
way.  Some of our functions have huge variable declaration sections.
This change includes one small example where we could start using declarations
after statements.

A concern I had was - how does this interact with `__attribute__((cleanup))` and
early returns? I tested it, and AFAICS the behavior is what you'd expect - the
cleanup function isn't called if its variable isn't reachable.

Closes: #718
Approved by: jlebon
2017-03-06 18:33:50 +00:00
Colin Walters b5c5003ff6 pull: Fold together deltapart+fallback count for display
It's just simpler, and I'm not sure people are going to care
much about the difference by default.

We already folded in the fallback sizes into the download totals, so folding in
the count makes things consistent; previously you could see e.g.
`3/3 parts, 100MB/150MB` and be confused.

Closes: #678
Approved by: giuseppe
2017-02-17 14:58:25 +00:00
Colin Walters e1118e320d repo: Fix static delta progress display
There were a few bugs here.

- We need to keep track of the size of the delta parts we've already processed,
  in order to make progress reliable at all in the face of interruptions.  Add
  a new `fetched-delta-part-size` async progress variable for this.
- The total before disregarded what we'd already downloaded, which was confusing.
  Now, a progress percentage is `fetched/total`.
- Correctly handle "unknown bytes/sec" in the progress display.

However, to be fully correct we need to show the fallback objects too. That
would require tracking in the pull code when we fetch an object as a fallback
versus "normally". This would be simpler really if we could assume in a run we
were *only* processing a delta, but currently we don't do that.

Related: https://github.com/ostreedev/ostree/issues/475

Closes: #678
Approved by: giuseppe
2017-02-17 14:58:25 +00:00
Philip Withnall e6a8979e05 ostree-repo: Clarify error behaviour of remote option getters
Clarify the documentation for functions like
ostree_repo_get_remote_boolean_option(), stating what out_value will be
set to on error.

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

Closes: #676
Approved by: cgwalters
2017-02-10 14:26:00 +00:00
Colin Walters 425ccc0a33 pull: Show Estimating if we're scanning too
The libcurl backend does all the work in the main thread/loop, which
seems to starve the idle scanning worker more.  With the libcurl
backend, we're a lot more likely to have at least one outstanding
metadata request.

But it can more easily transiently happen with libcurl that all of our current
fetches are content. To be accurate here, just show Estimating if we're scanning
too.

Closes: #654
Approved by: jlebon
2017-02-07 19:59:40 +00:00
Colin Walters 3d38f03e4f repo: Add archive/zlib-level option, drop default compression to 6
The gzip default is 6.  When I was writing this code, I chose 9 under
the assumption that for long-term archival, the extra compression was
worth it.

Turns out level 9 is really, really not worth it.  Here's run at level 9
compressing the current Fedora Atomic Host into archive:

```
ostree --repo=repo pull-local repo-build fedora-atomic/25/x86_64/docker-host
real    2m38.115s
user    2m31.210s
sys     0m3.114s
617M    repo
```

And here's the new default level of 6:

```
ostree --repo=repo pull-local repo-build fedora-atomic/25/x86_64/docker-host
real    0m53.712s
user    0m43.727s
sys     0m3.601s
619M    repo
619M    total
```

As you can see, we run almost *three times* faster, and we take up *less
than one percent* more space.

Conclusion: Using level 9 is dumb.  And here's a run at compression level 1:

```
ostree --repo=repo pull-local repo-build fedora-atomic/25/x86_64/docker-host
real    0m24.073s
user    0m17.574s
sys     0m2.636s
643M    repo
643M    total
```

I would argue actually many people would prefer even this for "devel" repos.
For production repos, you want static deltas anyways.  (However, perhaps
we should support a model where generating a delta involves re-compressing
fallback objects with a bit stronger compression level).

Anyways, let's make everyone's life better and switch the default to 6.

Closes: #671
Approved by: jlebon
2017-02-07 17:01:09 +00:00
Colin Walters 9c0af41710 lib: Add ostree_repo_reload_config()
For a long time we've cached the remote configs in the repo, which
mostly makes sense for the `repo/config` file, but less sense
for `/etc/ostree/remotes.d`, because we want to support admins
interactively editing them.

One can delete the repo instance and create a new one, but that's a bit ugly.
Let's introduce an API for this so rpm-ostree can reload remotes after
admins/scripts edit them in `/etc`.  We also might as well reload
any other entries in the config.

Structurually now, `ostree_repo_open()` deals with file descriptors, and then
calls `ostree_repo_reload_config()`. Except for the uncompressed cache, which is
the only thing that deals with FDs that can be configured. But we want to delete
that anyways.

No tests, since...we don't have a daemon in this codebase, don't want to shave
that yak just today.

Closes: #662
Approved by: jlebon
2017-02-07 16:12:58 +00:00
Colin Walters a89be1f00f lib: Prefix GPG errors with the checksum
I was working on https://bugzilla.redhat.com/show_bug.cgi?id=1393545
and it was annoying that I couldn't know what the new (unsigned)
commit has was until verification succeeded.  I could pull it
manually without GPG, but then it'd be sitting in the repo.

Now:

```
Updating from: fedora-atomic:fedora-atomic/25/x86_64/docker-host

Receiving metadata objects: 0/(estimating) -/s 0 bytes
error: Commit 2fb89decd2cb5c3bd73983f0a7b35c7437f23e3aaa91698fab952bb224e46af5: GPG verification enabled, but no signatures found (use gpg-verify=false in remote config to disable)
```

Closes: #663
Approved by: giuseppe
2017-02-01 20:40:21 +00:00
Dan Nicholson 300752e55a repo: Fix list_objects annotations
Without the element-type annotations, bindings don't know how to handle
the elements of the hash table. Since the table is created with destroy
functions, the caller does not own the elements, so transfer container
is used.

Closes: #635
Approved by: cgwalters
2016-12-22 16:07:52 +00:00
Dan Nicholson dd3cda401b repo: Fix object list keys ownership
ostree_object_name_serialize returns a floating ref, so sink it before
adding it to the hash table so it can properly be freed later when the
hash table is destroyed.

This is particularly a problem for pygobject, which sinks the refs on
variants as it marshals them to native python types. If the ref isn't
already sunk, then the ref count won't increase and a critical warning
will be raised when both the hash table and pygobject try to unref it.

Closes: #635
Approved by: cgwalters
2016-12-22 16:07:52 +00:00
Dan Nicholson 169a629345 repo: Fix indentation
Closes: #635
Approved by: cgwalters
2016-12-22 16:07:52 +00:00
Colin Walters 2f86a5284c lib: Squash last use of GFile deltas_dir
I was having this thought today about making more of the OS readonly,
and ultimately if we got to the point where all ostree operations are
through the repo and sysroot dfds, we could have rpm-ostree be the
only process holding those fds open, and have a read-only bind mount
on top.

Anyways, we're not there, likely won't be soon, but this gets us
closer to being fully fd relative.

Closes: #628
Approved by: jlebon
2016-12-12 15:50:11 +00:00
Dan Nicholson 640e92ef37 repo: Fix annotations for remote_fetch_summary functions
These are out parameters, so add the (out) annotation and switch
(nullable) to (optional) since the latter is used for the purpose of
optional out parameters.

Closes: #629
Approved by: cgwalters
2016-12-09 13:07:42 +00:00
Jasper St. Pierre fd6ba80d07 ostree-repo: Make the lock with a long-lasting FD
glnx_make_lock_file requires that the dfd passed in survives the
lifetime of the lock. Since dfd_iter.fd gets cleaned up after the
function returns, this isn't the case. dfd_iter.fd should be equivalent
to tmpdir_dfd, since we iter on ".", and that survives past the
function, so just use that instead.

Closes: #591
Approved by: cgwalters
2016-11-22 02:32:33 +00:00
Jasper St. Pierre a8f5c20209 ostree-repo: Fix parameter name
Closes: #591
Approved by: cgwalters
2016-11-22 02:32:33 +00:00
Colin Walters c1c70bceb7 [TSAN] Rework assertions to always access refcount atomically
`-fsanitize=address` complained that the `refcount > 0` assertions
were reading without atomics.  We can fix this by reworking them
to read the previous value.

Closes: #582
Approved by: jlebon
2016-11-17 19:41:57 +00:00
Colin Walters 24bf257ee9 lib: Add an API to GPG verify a commit given a remote
Conceptually we've been moving towards having our GPG verification
paths be per-remote.  The code internally supports this, but we
didn't expose an API to use it conveniently.

This came up when trying to add a new `gpgkeypath` option, since
right now rpm-ostree manually finds keyrings for the remote, and
hence it wasn't looking at the keypath, and said "Unknown key"
in status.

Adding an API fixes this nicely.

Closes: #576
Approved by: giuseppe
2016-11-17 11:33:41 +00:00
Colin Walters f244c70277 Add "gpgkeypath" option to remotes
For Project Atomic, we already have RPM signatures which use files in
`/etc/pki/rpm-gpg`.  It's convenient to simply bind the OSTree remote
configuration to those file paths, rather than having duplicate key
data.

This does mean that we need to parse the files for verification, so we
end up importing them into the verifier's temporary keyring, which is
a bit ugly, but it's what other projects do.

Closes: https://github.com/ostreedev/ostree/issues/573

Closes: #575
Approved by: giuseppe
2016-11-17 09:44:07 +00:00
Colin Walters 3cd5e6b41a lib: Split out helper function to create GPG context
In prep for future work.

Closes: #575
Approved by: giuseppe
2016-11-17 09:44:07 +00:00
Colin Walters a6cfe62eb8 lib: Define and use cleanup functions for gpgme
Just a cleanup in preparation for future work.

Closes: #575
Approved by: giuseppe
2016-11-17 09:44:07 +00:00
Colin Walters 730f723869 repo: Don't put remote refs in the summary file
I was doing a chain of mirroring like A -> B -> C

And repo B had A as a remote.  When I added B as
a remote to C, the summary file of B had a ref
upstream:foo/bar/baz, which caused all pulls from
B to C to fail, since the summary file is only
expected to have refs, not refspecs.

Closes: https://github.com/ostreedev/ostree/issues/561

Closes: #565
Approved by: jlebon
2016-11-04 15:16:09 +00:00
Simon McVittie 8ae03d6497 load_metadata_internal: don't leak GBytes
Found by valgrind memcheck. g_variant_new_from_bytes takes a ref to the
bytes, so we need to release the original ref.

Signed-off-by: Simon McVittie <smcv@debian.org>

Closes: #556
Approved by: cgwalters
2016-10-30 22:11:15 +00:00
Simon McVittie 4739709742 keyfile_set_from_vardict: free the string array
g_variant_get_strv is (transfer container): the caller is expected to
free the array, but not the individual strings.

Leak found with valgrind memcheck.

Signed-off-by: Simon McVittie <smcv@debian.org>

Closes: #556
Approved by: cgwalters
2016-10-30 22:11:15 +00:00
Colin Walters 7f2960db43 Define an initializer for GVariant{Builder,Dict}
So we build warning-free on GLib (< 2.50, >= 2.50).  This
is a band aid until we hard-require >= 2.50.

Closes: #547
Approved by: jlebon
2016-10-27 18:49:15 +00:00
Colin Walters b77edf24a3 tree-wide: Remove unused variables detected by CLang
CLang finds these, whereas GCC treats having
`__attribute__((cleanup))` as a use.

This obsoletes https://github.com/ostreedev/ostree/pull/411

Closes: #548
Approved by: jlebon
2016-10-27 17:02:01 +00:00
Owen W. Taylor a5af1cb688 ostree-repo.c: Fix file descriptor cleanup
0 was used as an "unset" flag for tmp_dir_fd, which is technically
incorrect. For cache_dir_fd, -1 was used as the sentinal but 0
was checked for, resulting in close(-1).

Closes: #507
Approved by: cgwalters
2016-09-13 13:19:10 +00:00
Jonathan Lebon 12e916466c static-delta: add some error handling
We make _ostree_parse_delta_name() a bit more defensive since it handles
user input.

Closes: #504

Closes: #505
Approved by: cgwalters
2016-09-09 19:06:11 +00:00
Colin Walters e127070550 repo: Only use mmap() for metadata > 16k
See http://stackoverflow.com/questions/258091/when-should-i-use-mmap-for-file-access
and
https://lwn.net/Articles/591978/

I didn't really notice much performance difference in some small
tests, but I happened to be stracing and realized we were `mmap()`ing
even for 50 bytes which is not very useful, so let's not do it.

Closes: #489
Approved by: alexlarsson
2016-09-08 14:56:30 +00:00
Colin Walters 3ef4cc2e5b lib: Add an API to list only "our" objects, fix prune to use it
When doing a prune, we should not try to delete objects in parent
repos, since it'll fail.  There is a bigger discussion about the
semantics of `parent=` to be had, but this will fix trying to use
`ostree prune --repo=/ostree/repo/extensions/rpmostree/pkgcache`.

Closes: https://github.com/ostreedev/ostree/issues/467

Closes: #471
Approved by: jlebon
2016-08-25 20:01:37 +00:00
Colin Walters 683e060099 repo: Add prefixes to errors for querying size/deleting
I hit these while causing errors in prune.  Let's add the specific
object we were looking for.

Closes: #471
Approved by: jlebon
2016-08-25 20:01:37 +00:00
Dan Nicholson b1d13bb356 repo: Really ignore progress changed user data
The documentation says this is ignored, implying that you should pass
NULL to it. However, the function immediately returns in this case even
though the argument isn't used anywhere.

Closes: #458
Approved by: cgwalters
2016-08-12 14:56:07 +00:00
Colin Walters 6b089304bf repo: Drop more internally unused GFile members
I forgot to actually remove `config_file` in the previous
commit, the txn lock hasn't been used in a long time, and
for the uncompressed cache, everything uses the fd already.

Closes: #433
Approved by: giuseppe
2016-08-08 08:31:59 +00:00
Colin Walters d55655b096 repo: Drop internal GFile config_file
The remote parsing code still uses GFiles but this is a start.

Closes: #432
Approved by: giuseppe
2016-08-05 08:26:07 +00:00