We need to have labels applied even if a container is running in privileged
mode. On an tightly locked down SELinux system, this will cause running
without labels will cause SELinux to block privileged mode containers.
Signed-off-by: Dan Walsh <dwalsh@redhat.com>
This generates an ID string for calls to Mount/Unmount, allowing drivers
to differentiate between two callers of `Mount` and `Unmount`.
Signed-off-by: Brian Goff <cpuguy83@gmail.com>
Restore the 1.10 logic that will reset the restart manager's timeout or
backoff delay if a container executes longer than 10s reguardless of
exit status or policy.
Signed-off-by: Michael Crosby <crosbymichael@gmail.com>
Currently if you restart docker daemon, all the containers with restart
policy `on-failure` regardless of its `RestartCount` will be started,
this will make daemon cost more extra time for restart.
This commit will stop these containers to do unnecessary start on
daemon's restart.
Signed-off-by: Zhang Wei <zhangwei555@huawei.com>
This allows a user to specify explicitly to enable
automatic copying of data from the container path to the volume path.
This does not change the default behavior of automatically copying, but
does allow a user to disable it at runtime.
Signed-off-by: Brian Goff <cpuguy83@gmail.com>
Signed-off-by: John Howard <jhoward@microsoft.com>
Signed-off-by: John Starks <jostarks@microsoft.com>
Signed-off-by: Darren Stahl <darst@microsoft.com>
Signed-off-by: Tonis Tiigi <tonistiigi@gmail.com>
This allows users to provide a FQDN as hostname or to use distinct hostname and
domainname parts. Depends on https://github.com/docker/libnetwork/pull/950
Signed-off-by: Tim Hockin <thockin@google.com>
Attach can hang forever if there is no data to send. This PR adds notification
of Attach goroutine about container stop.
Signed-off-by: Alexander Morozov <lk4d4@docker.com>
Correct creation of a non-existing WORKDIR during docker build to use
remapped root uid/gid on mkdir
Docker-DCO-1.1-Signed-off-by: Phil Estes <estesp@linux.vnet.ibm.com> (github: estesp)
Moving all strings to the errors package wasn't a good idea after all.
Our custom implementation of Go errors predates everything that's nice
and good about working with errors in Go. Take as an example what we
have to do to get an error message:
```go
func GetErrorMessage(err error) string {
switch err.(type) {
case errcode.Error:
e, _ := err.(errcode.Error)
return e.Message
case errcode.ErrorCode:
ec, _ := err.(errcode.ErrorCode)
return ec.Message()
default:
return err.Error()
}
}
```
This goes against every good practice for Go development. The language already provides a simple, intuitive and standard way to get error messages, that is calling the `Error()` method from an error. Reinventing the error interface is a mistake.
Our custom implementation also makes very hard to reason about errors, another nice thing about Go. I found several (>10) error declarations that we don't use anywhere. This is a clear sign about how little we know about the errors we return. I also found several error usages where the number of arguments was different than the parameters declared in the error, another clear example of how difficult is to reason about errors.
Moreover, our custom implementation didn't really make easier for people to return custom HTTP status code depending on the errors. Again, it's hard to reason about when to set custom codes and how. Take an example what we have to do to extract the message and status code from an error before returning a response from the API:
```go
switch err.(type) {
case errcode.ErrorCode:
daError, _ := err.(errcode.ErrorCode)
statusCode = daError.Descriptor().HTTPStatusCode
errMsg = daError.Message()
case errcode.Error:
// For reference, if you're looking for a particular error
// then you can do something like :
// import ( derr "github.com/docker/docker/errors" )
// if daError.ErrorCode() == derr.ErrorCodeNoSuchContainer { ... }
daError, _ := err.(errcode.Error)
statusCode = daError.ErrorCode().Descriptor().HTTPStatusCode
errMsg = daError.Message
default:
// This part of will be removed once we've
// converted everything over to use the errcode package
// FIXME: this is brittle and should not be necessary.
// If we need to differentiate between different possible error types,
// we should create appropriate error types with clearly defined meaning
errStr := strings.ToLower(err.Error())
for keyword, status := range map[string]int{
"not found": http.StatusNotFound,
"no such": http.StatusNotFound,
"bad parameter": http.StatusBadRequest,
"conflict": http.StatusConflict,
"impossible": http.StatusNotAcceptable,
"wrong login/password": http.StatusUnauthorized,
"hasn't been activated": http.StatusForbidden,
} {
if strings.Contains(errStr, keyword) {
statusCode = status
break
}
}
}
```
You can notice two things in that code:
1. We have to explain how errors work, because our implementation goes against how easy to use Go errors are.
2. At no moment we arrived to remove that `switch` statement that was the original reason to use our custom implementation.
This change removes all our status errors from the errors package and puts them back in their specific contexts.
IT puts the messages back with their contexts. That way, we know right away when errors used and how to generate their messages.
It uses custom interfaces to reason about errors. Errors that need to response with a custom status code MUST implementent this simple interface:
```go
type errorWithStatus interface {
HTTPErrorStatusCode() int
}
```
This interface is very straightforward to implement. It also preserves Go errors real behavior, getting the message is as simple as using the `Error()` method.
I included helper functions to generate errors that use custom status code in `errors/errors.go`.
By doing this, we remove the hard dependency we have eeverywhere to our custom errors package. Yes, you can use it as a helper to generate error, but it's still very easy to generate errors without it.
Please, read this fantastic blog post about errors in Go: http://dave.cheney.net/2014/12/24/inspecting-errors
Signed-off-by: David Calavera <david.calavera@gmail.com>
Add `--restart` flag for `update` command, so we can change restart
policy for a container no matter it's running or stopped.
Signed-off-by: Zhang Wei <zhangwei555@huawei.com>
Currently, when running a container with --ipc=host, if /dev/mqueue is
a standard directory on the hos the daemon will bind mount it allowing
the container to create/modify files on the host.
This commit forces /dev/mqueue to always be of type mqueue except when
the user explicitely requested something to be bind mounted to
/dev/mqueue.
Signed-off-by: Kenfe-Mickael Laventure <mickael.laventure@gmail.com>
mqueue can not be mounted on the host os and then shared into the container.
There is only one mqueue per mount namespace, so current code ends up leaking
the /dev/mqueue from the host into ALL containers. Since SELinux changes the
label of the mqueue, only the last container is able to use the mqueue, all
other containers will get a permission denied. If you don't have SELinux protections
sharing of the /dev/mqueue allows one container to interact in potentially hostile
ways with other containers.
Signed-off-by: Dan Walsh <dwalsh@redhat.com>
After exec driver run, container lock is lost, so we should lock
container when changing its state to `restarting`
Signed-off-by: Zhang Wei <zhangwei555@huawei.com>
Currently if we exec a restarting container, client will fail silently,
and daemon will print error that container can't be found which is not a
very meaningful prompt to user.
This commit will stop user from exec a restarting container and gives
more explicit error message.
Signed-off-by: Zhang Wei <zhangwei555@huawei.com>
dockerinit has been around for a very long time. It was originally used
as a way for us to do configuration for LXC containers once the
container had started. LXC is no longer supported, and /.dockerinit has
been dead code for quite a while. This removes all code and references
in code to dockerinit.
Signed-off-by: Aleksa Sarai <asarai@suse.com>
