Signed-off-by: John Howard <jhoward@microsoft.com>
The re-coalesces the daemon stores which were split as part of the
original LCOW implementation.
This is part of the work discussed in https://github.com/moby/moby/issues/34617,
in particular see the document linked to in that issue.
The Golang built-in gzip library is serialized, and fairly slow
at decompressing. It also only decompresses on demand, versus
pipelining decompression.
This change switches to using the pigz external command
for gzip decompression, as opposed to using the built-in
golang one. This code is not vendored, but will be used
if it autodetected as part of the OS.
This also switches to using context, versus a manually
managed channel to manage cancellations, and synchronization.
There is a little bit of weirdness around manually having
to cancel in the error cases.
Signed-off-by: Sargun Dhillon <sargun@sargun.me>
When a recursive unmount fails, don't bother parsing the mount table to check
if what we expected to be a mountpoint is still mounted. `EINVAL` is
returned when you try to unmount something that is not a mountpoint, the
other cases of `EINVAL` would not apply here unless everything is just
wrong. Parsing the mount table over and over is relatively expensive,
especially in the code path that it's in.
Signed-off-by: Brian Goff <cpuguy83@gmail.com>
if thin device is deteled and the metadata exists, you can not
delete related containers. This patch ignore Nodata errors for
thin device deletion
Signed-off-by: Liu Hua <sdu.liu@huawei.com>
Files that are suffixed with `_linux.go` or `_windows.go` are
already only built on Linux / Windows, so these build-tags
were redundant.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
This subtle bug keeps lurking in because error checking for `Mkdir()`
and `MkdirAll()` is slightly different wrt to `EEXIST`/`IsExist`:
- for `Mkdir()`, `IsExist` error should (usually) be ignored
(unless you want to make sure directory was not there before)
as it means "the destination directory was already there"
- for `MkdirAll()`, `IsExist` error should NEVER be ignored.
Mostly, this commit just removes ignoring the IsExist error, as it
should not be ignored.
Also, there are a couple of cases then IsExist is handled as
"directory already exist" which is wrong. As a result, some code
that never worked as intended is now removed.
NOTE that `idtools.MkdirAndChown()` behaves like `os.MkdirAll()`
rather than `os.Mkdir()` -- so its description is amended accordingly,
and its usage is handled as such (i.e. IsExist error is not ignored).
For more details, a quote from my runc commit 6f82d4b (July 2015):
TL;DR: check for IsExist(err) after a failed MkdirAll() is both
redundant and wrong -- so two reasons to remove it.
Quoting MkdirAll documentation:
> MkdirAll creates a directory named path, along with any necessary
> parents, and returns nil, or else returns an error. If path
> is already a directory, MkdirAll does nothing and returns nil.
This means two things:
1. If a directory to be created already exists, no error is
returned.
2. If the error returned is IsExist (EEXIST), it means there exists
a non-directory with the same name as MkdirAll need to use for
directory. Example: we want to MkdirAll("a/b"), but file "a"
(or "a/b") already exists, so MkdirAll fails.
The above is a theory, based on quoted documentation and my UNIX
knowledge.
3. In practice, though, current MkdirAll implementation [1] returns
ENOTDIR in most of cases described in #2, with the exception when
there is a race between MkdirAll and someone else creating the
last component of MkdirAll argument as a file. In this very case
MkdirAll() will indeed return EEXIST.
Because of #1, IsExist check after MkdirAll is not needed.
Because of #2 and #3, ignoring IsExist error is just plain wrong,
as directory we require is not created. It's cleaner to report
the error now.
Note this error is all over the tree, I guess due to copy-paste,
or trying to follow the same usage pattern as for Mkdir(),
or some not quite correct examples on the Internet.
[1] https://github.com/golang/go/blob/f9ed2f75/src/os/path.go
Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
Standard golang's `os.MkdirAll()` function returns "not a directory" error
in case a directory to be created already exists but is not a directory
(e.g. a file). Our own `idtools.MkdirAs*()` functions do not replicate
the behavior.
This is a bug since all `Mkdir()`-like functions are expected to ensure
the required directory exists and is indeed a directory, and return an
error otherwise.
As the code is using our in-house `system.Stat()` call returning a type
which is incompatible with that of golang's `os.Stat()`, I had to amend
the `system` package with `IsDir()`.
A test case is also provided.
Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
Update golang.org/x/sys to 95c6576299259db960f6c5b9b69ea52422860fce in
order to get the unix.Utsname with byte array instead of int8/uint8
members.
This allows to use simple byte slice to string conversions instead of
using charsToString or its open-coded version.
Also see golang/go#20753 for details.
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
To ensure that namesgenerator binary outputs random name
by initializing Seed.
Signed-off-by: Mizuki Urushida <z11111001011@gmail.com>
not use init function.
Signed-off-by: Mizuki Urushida <z11111001011@gmail.com>
In some circumstances we were not properly releasing plugin references,
leading to failures in removing a plugin with no way to recover other
than restarting the daemon.
1. If volume create fails (in the driver)
2. If a driver validation fails (should be rare)
3. If trying to get a plugin that does not match the passed in capability
Ideally the test for 1 and 2 would just be a unit test, however the
plugin interfaces are too complicated as `plugingetter` relies on
github.com/pkg/plugin/Client (a concrete type), which will require
spinning up services from within the unit test... it just wouldn't be a
unit test at this point.
I attempted to refactor this a bit, but since both libnetwork and
swarmkit are reliant on `plugingetter` as well, this would not work.
This really requires a re-write of the lower-level plugin management to
decouple these pieces.
Signed-off-by: Brian Goff <cpuguy83@gmail.com>
In some cases (e.g. NFS), a chown may technically be a no-op but still
return `EPERM`, so only call `chown` when neccessary.
This is particularly problematic for docker users bind-mounting an NFS
share into a container.
Signed-off-by: Brian Goff <cpuguy83@gmail.com>
Update golang.org/x/sys to 8dbc5d05d6edcc104950cc299a1ce6641235bc86 in
order to get the Major, Minor and Mkdev functions for every unix-like
OS. Use them instead of the locally defined versions which currently use
the Linux specific device major/minor encoding.
This means that the device number should now be properly encoded on e.g.
Darwin, FreeBSD or Solaris.
Also, the SIGUNUSED constant was removed from golang.org/x/sys/unix in
https://go-review.googlesource.com/61771 as it is also removed from the
respective glibc headers.
Remove it from signal.SignalMap as well after the golang.org/x/sys
re-vendoring.
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
With `rprivate` there exists a race where a reference to a mount has
propagated to the new namespace, when `rprivate` is set the parent
namespace is not able to remove the mount due to that reference.
With `rslave` unmounts will propagate correctly into the namespace and
prevent the sort of transient errors that are possible with `rprivate`.
This is a similar fix to 117c92745b
Signed-off-by: Brian Goff <cpuguy83@gmail.com>
Signed-off-by: John Howard <jhoward@microsoft.com>
This PR has the API changes described in https://github.com/moby/moby/issues/34617.
Specifically, it adds an HTTP header "X-Requested-Platform" which is a JSON-encoded
OCI Image-spec `Platform` structure.
In addition, it renames (almost all) uses of a string variable platform (and associated)
methods/functions to os. This makes it much clearer to disambiguate with the swarm
"platform" which is really os/arch. This is a stepping stone to getting the daemon towards
fully multi-platform/arch-aware, and makes it clear when "operating system" is being
referred to rather than "platform" which is misleadingly used - sometimes in the swarm
meaning, but more often as just the operating system.
The missing console mode constants were added to go-ansiterm in
Azure/go-ansiterm#23. Use these constants instead of defining them
locally.
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
The promise package represents a simple enough concurrency pattern that
replicating it in place is sufficient. To end the propagation of this
package, it has been removed and the uses have been inlined.
While this code could likely be refactored to be simpler without the
package, the changes have been minimized to reduce the possibility of
defects. Someone else may want to do further refactoring to remove
closures and reduce the number of goroutines in use.
Signed-off-by: Stephen J Day <stephen.day@docker.com>
If mount fails, the reason might be right there in the kernel log ring buffer.
Let's include it in the error message, it might be of great help.
Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
Static build with devmapper is impossible now since libudev is required
and no static version of libudev is available (as static libraries are
not supported by systemd which udev is part of).
This should not hurt anyone as "[t]he primary user of static builds
is the Editions, and docker in docker via the containers, and none
of those use device mapper".
Also, since the need for static libdevmapper is gone, there is no need
to self-compile libdevmapper -- let's use the one from Debian Stretch.
Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
Make sure to call C.free on C string allocated using C.CString in every
exit path.
C.CString allocates memory in the C heap using malloc. It is the callers
responsibility to free them. See
https://golang.org/cmd/cgo/#hdr-Go_references_to_C for details.
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
This enables docker cp and ADD/COPY docker build support for LCOW.
Originally, the graphdriver.Get() interface returned a local path
to the container root filesystem. This does not work for LCOW, so
the Get() method now returns an interface that LCOW implements to
support copying to and from the container.
Signed-off-by: Akash Gupta <akagup@microsoft.com>
Use CreateEvent, OpenEvent (which both map to the respective *EventW
function) and PulseEvent from golang.org/x/sys instead of local copies.
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Signed-off-by: Douglas Curtis <dougcurtis1@gmail.com>
Commenting out tests for now
Signed-off-by: Doug Curtis <dougcurtis1@gmail.com>
Added unit test for CopyInfoDestionationPath.
Signed-off-by: Doug Curtis <dougcurtis1@gmail.com>
Removing integration-cli test case additions
Signed-off-by: Doug Curtis <dougcurtis1@gmail.com>
Removing extra spaces between archive_unix_test.go test cases
Signed-off-by: Doug Curtis <dougcurtis1@gmail.com>
Fixed gofmt issues in archive_unix_test.go
Signed-off-by: Doug Curtis <dougcurtis1@gmail.com>
Use strongly typed errors to set HTTP status codes.
Error interfaces are defined in the api/errors package and errors
returned from controllers are checked against these interfaces.
Errors can be wraeped in a pkg/errors.Causer, as long as somewhere in the
line of causes one of the interfaces is implemented. The special error
interfaces take precedence over Causer, meaning if both Causer and one
of the new error interfaces are implemented, the Causer is not
traversed.
Signed-off-by: Brian Goff <cpuguy83@gmail.com>
- Remove unused function and variables from the package
- Remove usage of it from `profiles/apparmor` where it wasn't required
- Move the package to `daemon/logger/templates` where it's only used
Signed-off-by: Vincent Demeester <vincent@sbr.pm>
The BSD and Solaris versions of term.MakeRaw already set VMIN and VTIME
explicitly such that a read returns when one character is available.
cfmakeraw (which was previously used) in glibc also sets these values
explicitly, so it should be done in the Linux version of MakeRaw as well
to be consistent.
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Let's use latest lvm2 sources to compile the libdevmapper library.
Initial reason for compiling devmapper lib from sources was a need to
have the static version of the library at hand, in order to build
the static dockerd, but note that the same headers/solib are used
for dynamic build (dynbinary) as well.
The reason for this patch is to enable the deferral removal feature.
The supplied devmapper library (and headers) are too old, lacking the
needed functions, so the daemon is built with 'libdm_no_deferred_remove'
build tag (see the check in hack/make.sh). Because of this, even if the
kernel dm driver is perfectly able to support the feature, it can not
be used. For more details and background story, see [1].
Surely, one can't just change the version number. While at it:
- improve the comments;
- remove obsoleted URLs;
- remove s390 and ppc configure updates that are no longer needed;
- use pkg-config instead of hardcoding the flags (newer lib added
some more dependencies);
[1] https://github.com/moby/moby/issues/34298
Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
1. devmapper_wrapper_{,no_}deferred_remove.go:
Comments about LibraryDeferredRemovalSupport were very totally
misleading to me. This thing has nothing to do with either static
or dynamic linking (but with build tags). Fix the comment accordingly.
2. devmapper.go:
Reveal the source of those magic device* constants.
Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
Switch some more usage of the Stat function and the Stat_t type from the
syscall package to golang.org/x/sys. Those were missing in PR #33399.
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
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>
Also remove the test flag from pkg/term and jsut checkuid directly.
Fixed a problem with a pkg/term test that was leaving the terminal in a bad
state.
Signed-off-by: Daniel Nephin <dnephin@docker.com>
Use IoctlGetInt/IoctlSetInt from golang.org/x/sys/unix (where
applicable) instead of manually reimplementing them.
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Use IoctlGetTermios/IoctlSetTermios from golang.org/x/sys/unix instead
of manually reimplementing them.
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Use unix.Prctl() instead of manually reimplementing it using
unix.RawSyscall. Also use unix.SECCOMP_MODE_FILTER instead of locally
defining it.
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
With docker-17.06.0 some images pulled do not extract properly. Some files don't appear in correct directories. This may or may not cause the pull to fail. These images can't be pushed or saved. 17.06 is the first version of Docker built with go1.8.
Cause
There are multiple updates to the tar package in go1.8.
https://go-review.googlesource.com/c/32234/ disables using "prefix" field when new tar archives are being written. Prefix field was previously set when a record in the archive used a path longer than 100 bytes.
Another change https://go-review.googlesource.com/c/31444/ makes the reader ignore the "prefix" field value if the record is in GNU format. GNU format defines that same area should be used for access and modified times. If the "prefix" field is not read, a file will only be extracted by the basename.
The problem is that with a previous version of the golang archive package headers could be written, that use the prefix field while at the same time setting the header format to GNU. This happens when numeric fields are big enough that they can not be written as octal strings and need to be written in binary. Usually, this shouldn't happen: uid, gid, devmajor, devminor can use up to 7 bytes, size and timestamp can use 11. If one of the records does overflow it switches the whole writer to GNU mode and all next files will be saved in GNU format.
Signed-off-by: Tonis Tiigi <tonistiigi@gmail.com>
Currently, names are maintained by a separate system called "registrar".
This means there is no way to atomically snapshot the state of
containers and the names associated with them.
We can add this atomicity and simplify the code by storing name
associations in the memdb. This removes the need for pkg/registrar, and
makes snapshots a lot less expensive because they no longer need to copy
all the names. This change also avoids some problematic behavior from
pkg/registrar where it returns slices which may be modified later on.
Note that while this change makes the *snapshotting* atomic, it doesn't
yet do anything to make sure containers are named at the same time that
they are added to the database. We can do that by adding a transactional
interface, either as a followup, or as part of this PR.
Signed-off-by: Aaron Lehmann <aaron.lehmann@docker.com>
The case where we are trying to do a remount with changed filesystem specific options was missing,
we need to call `mount` as well here to change those options.
See #33844 for where we need this, as we change `tmpfs` options.
Signed-off-by: Justin Cormack <justin.cormack@docker.com>
Use the symlink xattr syscall wrappers Lgetxattr and Lsetxattr from
x/sys/unix (introduced in golang/sys@b90f89a) instead of providing own
wrappers. Leave the functionality of system.Lgetxattr intact with
respect to the retry with a larger buffer, but switch it to use
unix.Lgetxattr. Also leave system.Lsetxattr intact (even though it's
just a wrapper around the corresponding function from unix) in order to
keep moby building for !linux.
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Due to the CL https://go-review.googlesource.com/c/39608/ in
x/sys/windows which changed the definitions of STD_INPUT_HANDLE,
STD_OUTPUT_HANDLE and STD_ERROR_HANDLE, we get the following failure
after re-vendoring x/sys/windows:
07:47:01 # github.com/docker/docker/pkg/term
07:47:01 pkg/term/term_windows.go:82: constant 4294967286 overflows int
07:47:01 pkg/term/term_windows.go:88: constant 4294967285 overflows int
07:47:01 pkg/term/term_windows.go:94: constant 4294967284 overflows int
07:47:12 Build step 'Execute shell' marked build as failure
Temporarily switch back pkg/term to use these constants from the syscall
package and add a comment about it.
To really fix this, go-ansiterm should probably be switched to use
x/sys/windows.
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Changes most references of syscall to golang.org/x/sys/
Ones aren't changes include, Errno, Signal and SysProcAttr
as they haven't been implemented in /x/sys/.
Signed-off-by: Christopher Jones <tophj@linux.vnet.ibm.com>
[s390x] switch utsname from unsigned to signed
per 33267e036f
char in s390x in the /x/sys/unix package is now signed, so
change the buildtags
Signed-off-by: Christopher Jones <tophj@linux.vnet.ibm.com>
libcontainer/user does not build at all on Windows any more, and
this was breaking the client on Windows with upstream `runc`. As
these functions are not used anyway, just split out and stop
checking `runtime`.
Signed-off-by: Justin Cormack <justin.cormack@docker.com>
Enables other subsystems to watch actions for a plugin(s).
This will be used specifically for implementing plugins on swarm where a
swarm controller needs to watch the state of a plugin.
Signed-off-by: Brian Goff <cpuguy83@gmail.com>
docker run --name=test ubuntu /bin/sh -c "cd /tmp && echo hi > a && ln a b" && docker cp test:/tmp tmp_
test
link /root/tmp/a /root/tmp_/b: no such file or directory
Signed-off-by: yangshukui <yangshukui@huawei.com>
Go 1.9 (golang/go@66b5a2f) removed file type bits from
archive/tar.FileInfoHeader().
This commit ensures file type bits are filled even on Go 1.9 for
compatibility.
Signed-off-by: Akihiro Suda <suda.akihiro@lab.ntt.co.jp>
LogInit used to act as a manual way of registering the *necessary*
pkg/devicemapper logging callbacks. In addition, it was used to split up
the logic of pkg/devicemapper into daemon/graphdriver/devmapper (such
that some things were logged from libdm).
The manual aspect of this API was completely non-sensical and was just
begging for incorrect usage of pkg/devicemapper, so remove that semantic
and always register our own libdm callbacks.
In addition, recombine the split out logging callbacks into
pkg/devicemapper so that the default logger is local to the library and
also shown to be the recommended logger. This makes the code
substantially easier to read. Also the new DefaultLogger now has
configurable upper-bound for the log level, which allows for dynamically
changing the logging level.
Signed-off-by: Aleksa Sarai <asarai@suse.de>
e07d3cd9a ("devmapper: Fix libdm logging") removed all of the callers of
DmLogInitVerbose, but we still kept around the wrapper. However, the
libdm dm_log_init_verbose API changes the verbosity of the *default*
libdm logger. Because pkg/devicemapper internally *relies* on using
logging callbacks to understand what errors were encountered by libdm,
this wrapper is useless (it only makes sense for the default logger
which we do not user).
Any user not inside Docker of this function almost certainly was not
using this API correctly, because pkg/devicemapper will misbehave if our
logging callbacks were not registered.
Signed-off-by: Aleksa Sarai <asarai@suse.de>
This limit is unecessary and can lead to the truncation of long libdm
logs (which is quite annoying).
Fixes: b440ec013 ("device-mapper: Move all devicemapper spew to log through utils.Debugf().")
Signed-off-by: Aleksa Sarai <asarai@suse.de>
There have been some cases where umount, a device can be busy for a very
short duration. Maybe its udev rules, or maybe it is runc related races
or probably it is something else. We don't know yet.
If deferred removal is enabled but deferred deletion is not, then for the
case of "docker run -ti --rm fedora bash", a container will exit, device
will be deferred removed and then immediately a call will come to delete
the device. It is possible that deletion will fail if device was busy
at that time.
A device can't be deleted if it can't be removed/deactivated first. There
is only one exception and that is when deferred deletion is on. In that
case graph driver will keep track of deleted device and try to delete it
later and return success to caller.
Always make sure that device deactivation is synchronous when device is
being deleted (except the case when deferred deletion is enabled).
This should also take care of small races when device is busy for a short
duration and it is being deleted.
Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
This function was only used inside gitutils,
and is written specifically for the requirements
there.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
Recent changes to devmapper broke the implicit requirement that UdevWait be
called after every call to task.setCookie. Failure to do so results in leaks of
semaphores in the LVM code, eventually leading to semaphore exhaustion.
Previously this was handled by calling UdevWait in a ubiquitous defer function.
While there was initially some concern with deferring the UdevWait function
would cause some amount of race possibiliy, the fact that we never return the
cookie value or any value used to find it, makes that possibility seem unlikely,
so lets go back to that method
Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
Also, this removes the use of a questionable golang range feature which
corrects for mutation of a slice during iteration over that slice. This
makes the filter operation easier to read and reason about.
Signed-off-by: David Sheets <dsheets@docker.com>
Increases the test coverage of pkg/plugins.
Changed signature of function NewClientWithTimeout in pkg/plugin/client, to
take time.Duration instead of integers.
Signed-off-by: Raja Sami <raja.sami@tenpearl.com>
Commit the rwLayer to get the correct DiffID
Refacator copy in thebuilder
move more code into exportImage
cleanup some windows tests
Release the newly commited layer.
Set the imageID on the buildStage after exporting a new image.
Move archiver to BuildManager.
Have ReleaseableLayer.Commit return a layer
and store the Image from exportImage in the local imageSources cache
Remove NewChild from image interface.
Signed-off-by: Daniel Nephin <dnephin@docker.com>
This reverts to a version of runc without the ONCLR cleared to not cause
a regression with different clients using --tty.
This also reverts the OPOST changes to the term package to support the
initial change.
Signed-off-by: Michael Crosby <crosbymichael@gmail.com>
There is no case which would resolve in this error. The root user always exists, and if the id maps are empty, the default value of 0 is correct.
Signed-off-by: Daniel Nephin <dnephin@docker.com>
The test was failing because TarOptions was using a non-pointer for
ChownOpts, which meant the check for nil was never true, and
createTarFile was never using the hdr.UID/GID
Signed-off-by: Daniel Nephin <dnephin@docker.com>
DeviceMapper tasks in go use SetFinalizer to clean up C construct
counterparts in the C LVM library. While thats well and good, it relies
heavily on the exact interpretation of when the golang garbage collector
determines that an object is unreachable is subject to reclaimation.
While common sense would assert that for stack variables (which these DM
tasks always are), are unreachable when the stack frame in which they
are declared returns, thats not the case. According to this:
https://golang.org/pkg/runtime/#SetFinalizer
The garbage collector decides that, if a function calls into a
systemcall (which task.run() always will in LVM), and there are no
subsequent references to the task variable within that stack frame, then
it can be reclaimed. Those conditions are met in several devmapper.go
routines, and if the garbage collector runs in the middle of a
deviceMapper operation, then the task can be destroyed while the
operation is in progress, leading to crashes, failed operations and
other unpredictable behavior.
The fix is to use the KeepAlive interface:
https://golang.org/pkg/runtime/#KeepAlive
The KeepAlive method is effectively an empy reference that fools the
garbage collector into thinking that a variable is still reachable. By
adding a call to KeepAlive in the task.run() method, we can ensure that
the garbage collector won't reclaim a task object until its execution
within the deviceMapper C library is complete.
Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
Switches the remaining syscalls except Errno to /x/sys/.
This was supposed to be part of 33180
Signed-off-by: Christopher Jones <tophj@linux.vnet.ibm.com>
This is necessary because normally `apparmor_parser -r` will try to
create a temporary directory on the host (which is not allowed if the
host has a rootfs). However, the -K option bypasses saving things to the
cache (which avoids this issue).
% apparmor_parser -r /tmp/docker-profile
mkstemp: Read-only file system
% apparmor_parser -Kr /tmp/docker-profile
%
In addition, add extra information to the ensureDefaultAppArmorProfile
errors so that problems like this are easier to debug.
Fixes: 2f7596aaef ("apparmor: do not save profile to /etc/apparmor.d")
Signed-off-by: Aleksa Sarai <asarai@suse.de>
This patch adds the untilRemoved option to the ContainerWait API which
allows the client to wait until the container is not only exited but
also removed.
This patch also adds some more CLI integration tests for waiting for a
created container and waiting with the new --until-removed flag.
Docker-DCO-1.1-Signed-off-by: Josh Hawn <josh.hawn@docker.com> (github: jlhawn)
Handle detach sequence in CLI
Docker-DCO-1.1-Signed-off-by: Josh Hawn <josh.hawn@docker.com> (github: jlhawn)
Update Container Wait Conditions
Docker-DCO-1.1-Signed-off-by: Josh Hawn <josh.hawn@docker.com> (github: jlhawn)
Apply container wait changes to API 1.30
The set of changes to the containerWait API missed the cut for the
Docker 17.05 release (API version 1.29). This patch bumps the version
checks to use 1.30 instead.
This patch also makes a minor update to a testfile which was added to
the builder/dockerfile package.
Docker-DCO-1.1-Signed-off-by: Josh Hawn <josh.hawn@docker.com> (github: jlhawn)
Remove wait changes from CLI
Docker-DCO-1.1-Signed-off-by: Josh Hawn <josh.hawn@docker.com> (github: jlhawn)
Address minor nits on wait changes
- Changed the name of the tty Proxy wrapper to `escapeProxy`
- Removed the unnecessary Error() method on container.State
- Fixes a typo in comment (repeated word)
Docker-DCO-1.1-Signed-off-by: Josh Hawn <josh.hawn@docker.com> (github: jlhawn)
Use router.WithCancel in the containerWait handler
This handler previously added this functionality manually but now uses
the existing wrapper which does it for us.
Docker-DCO-1.1-Signed-off-by: Josh Hawn <josh.hawn@docker.com> (github: jlhawn)
Add WaitCondition constants to api/types/container
Docker-DCO-1.1-Signed-off-by: Josh Hawn <josh.hawn@docker.com> (github: jlhawn)
Address more ContainerWait review comments
- Update ContainerWait backend interface to not return pointer values
for container.StateStatus type.
- Updated container state's Wait() method comments to clarify that a
context MUST be used for cancelling the request, setting timeouts,
and to avoid goroutine leaks.
- Removed unnecessary buffering when making channels in the client's
ContainerWait methods.
- Renamed result and error channels in client's ContainerWait methods
to clarify that only a single result or error value would be sent
on the channel.
Docker-DCO-1.1-Signed-off-by: Josh Hawn <josh.hawn@docker.com> (github: jlhawn)
Move container.WaitCondition type to separate file
... to avoid conflict with swagger-generated code for API response
Docker-DCO-1.1-Signed-off-by: Josh Hawn <josh.hawn@docker.com> (github: jlhawn)
Address more ContainerWait review comments
Docker-DCO-1.1-Signed-off-by: Josh Hawn <josh.hawn@docker.com> (github: jlhawn)
Switches calls to syscall to x/sys, which is more up to date.
This is fixes a number of possible bugs on other architectures
where ioctl tcget and tcset aren't implemented correctly.
There are a few remaining syscall references, because x/sys doesn't
have an Errno implementation yet.
Also removes a ppc64le and cgo build tag that fixes building on
ppc64le without cgo
Signed-off-by: Christopher Jones <tophj@linux.vnet.ibm.com>
All LVM actions in the devicemapper library are asyncronous, involving a call to
a task enqueue function (dm_run_task) and a wait on a resultant udev event
(UdevWait). Currently devmapper.go defers all calls to UdevWait, which discards
the return value. While it still generates an error message in the log (if
debugging is enabled), the calling thread is still allowed to continue as if no
error has occured, leading to subsequent errors, and significant confusion when
debugging, due to those subsequent errors. Given that there is no risk of panic
between the task submission and the wait operation, it seems more reasonable to
preform the UdevWait inline at the end of any given lvm action so that errors
can be caught and returned before docker can continue and create additional
failures.
Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
Currently, the devicemapper library sets cookies to correlate wait operations,
which must be unique (as the lvm2 library doesn't detect duplicate cookies).
The current method for cookie generation is to take the address of a cookie
variable. However, because the variable is declared on the stack, execution
patterns can lead to the cookie variable being declared at the same stack
location, which results in a high likelyhood of duplicate cookie use, which in
turn can lead to various odd lvm behaviors, which can be hard to track down
(object use before create, duplicate completions, etc). Lets guarantee that the
cookie we generate is unique by declaring it on the heap instead. This
guarantees that the address of the variable won't be reused until such time as
the UdevWait operation completes, and drops its reference to it, at which time
the gc can reclaim it.
Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
If a wait event fails when preforming a devicemapper operation, it would be good
to know, in addition to the cookie that its waiting on, we reported the error
that was reported from the lvm2 library.
Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
The unnecessary `random` package has been removed in favor of using the
`math/rand` package directly. Seeding of the random value from crypto
has been added to the `stringid` package to account for the change.
May need to add an equivalent seed to `namesgenerator`, but this is
often used with `stringid` and has collision protection.
Signed-off-by: Stephen J Day <stephen.day@docker.com>
Before this, if `forceRemove` is set the container data will be removed
no matter what, including if there are issues with removing container
on-disk state (rw layer, container root).
In practice this causes a lot of issues with leaked data sitting on
disk that users are not able to clean up themselves.
This is particularly a problem while the `EBUSY` errors on remove are so
prevalent. So for now let's not keep this behavior.
Signed-off-by: Brian Goff <cpuguy83@gmail.com>
This is synonymous with `docker run --cidfile=FILE` and writes the digest of
the newly built image to the named file. This is intended to be used by build
systems which want to avoid tagging (perhaps because they are in CI or
otherwise want to avoid fixed names which can clash) by enabling e.g. Makefile
constructs like:
image.id: Dockerfile
docker build --iidfile=image.id .
do-some-more-stuff: image.id
do-stuff-with <image.id
Currently the only way to achieve this is to use `docker build -q` and capture
the stdout, but at the expense of losing the build output.
In non-silent mode (without `-q`) with API >= v1.29 the caller will now see a
`JSONMessage` with the `Aux` field containing a `types.BuildResult` in the
output stream for each image/layer produced during the build, with the final
one being the end product. Having all of the intermediate images might be
interesting in some cases.
In silent mode (with `-q`) there is no change, on success the only output will
be the resulting image digest as it was previosuly.
There was no wrapper to just output an Aux section without enclosing it in a
Progress, so add one here.
Added some tests to integration cli tests.
Signed-off-by: Ian Campbell <ian.campbell@docker.com>
