releaseableLayer includes automatic handling for creating a read/write layer and mounting it on a call to Mount(), but then does not correspondingly unmount the layer before trying to delete it, which will fail for some graphdrivers. Commit on a releaseable layer also leaks the tarstream for the layer. To fix this, the stream close is deferred in Commit and releaseRWLayer now correctly handles unmounting the layer before trying to delete it. In addition, the changes include better error handling in Release() to make sure that errors are returned to the caller for failures on read/write layers instead of being ignored.# Please enter the commit message for your changes. Lines starting
Signed-off-by: Stefan Wernli <swernli@ntdev.microsoft.com>
GetTasks can call GetService and GetNode with the read lock held. These
methods try to aquire the read side of the same lock. According to the
sync package documentation, this is not safe:
> If a goroutine holds a RWMutex for reading, it must not expect this or
> any other goroutine to be able to also take the read lock until the
> first read lock is released. In particular, this prohibits recursive
> read locking. This is to ensure that the lock eventually becomes
> available; a blocked Lock call excludes new readers from acquiring the
> lock.
Fix GetTasks to use the lower-level getService and getNode methods
instead. Also, use lockedManagerAction to simplify GetTasks.
Signed-off-by: Aaron Lehmann <aaron.lehmann@docker.com>
When using a https proxy, an extra HTTP 200 header will be generated.
So we can't rely on detecting the first http header.
$curlHeaders with https proxy:
"HTTP/1.0 200 Connection established <-- the https proxy's response
HTTP/1.1 307 Temporary Redirect
...
"
See https://stackoverflow.com/a/34537988/889429Fixes#34131
Signed-off-by: Jacob Wen <jian.w.wen@oracle.com>
Integration test were failing in trial runs for docker-ce 17.07 due to
the lack of go-autogen being sourced in `hack/make.sh`. This re-adds
go-autogen to be sourced for test-integration-cli so that we can
actually run tests without the error found in:
https://github.com/moby/moby/pull/33857
Signed-off-by: Eli Uriegas <eli.uriegas@docker.com>
Specifically, none of the graphdrivers are supposed to return a
not-exist type of error on remove (or at least that's how they are
currently handled).
Found that AUFS still had one case where a not-exist error could escape,
when checking if the directory is mounted we call a `Statfs` on the
path.
This fixes AUFS to not return an error in this case, but also
double-checks at the daemon level on layer remove that the error is not
a `not-exist` type of error.
Signed-off-by: Brian Goff <cpuguy83@gmail.com>
There really is no reason why anyone should create content in /dev
other then device nodes. Limiting it size to the 64 k size limit.
Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
This adds the new `CreatedAt` field to the API version history
and updates some examples to show this information.
The `CreatedAt` field was implemented in a46f757c40
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
Having a map per log entry seemed heavier than necessary. These
attributes end up being sorted and serialized, so storing them in a map
doesn't add anything (there's no random access element). In SwarmKit,
they originate as a slice, so there's an unnecessary conversion to a map
and back.
This also fixes the sort comparator, which used to inefficiently split
the string on each comparison.
Signed-off-by: Aaron Lehmann <aaron.lehmann@docker.com>
I am getting the following warning from gcc when compiling the daemon:
> # github.com/docker/docker/pkg/devicemapper
> pkg/devicemapper/devmapper_wrapper.go: In function ‘log_cb’:
> pkg/devicemapper/devmapper_wrapper.go:20:2: warning: ignoring return
> value of ‘vasprintf’, declared with attribute warn_unused_result
> [-Wunused-result]
> vasprintf(&buffer, f, ap);
> ^
vasprintf(3) man page says if the function returns -1, the buffer is
undefined, so we should not use it. In practice, I assume, this never
happens so we just return.
Introduced by https://github.com/moby/moby/pull/33845 that resulted in
commit 63328c6 ("devicemapper: remove 256 character limit of libdm logs")
Cc: Aleksa Sarai <asarai@suse.de>
Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
