If mknod() returns ENOSYS, it most probably means quota is not supported
here, so return the appropriate error.
This is a conservative* fix to regression in vfs graph driver introduced
by commit 7a1618ced3 ("add quota support to VFS graphdriver").
On some filesystems, vfs fails to init with the following error:
> Error starting daemon: error initializing graphdriver: Failed to mknod
> /go/src/github.com/docker/docker/bundles/test-integration/d6bcf6de610e9/root/vfs/backingFsBlockDev:
> function not implemented
Reported-by: Brian Goff <cpuguy83@gmail.com>
Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
Commit 7a1618ced3 regresses running Docker
in user namespaces. The new check for whether quota are supported calls
NewControl() which in turn calls makeBackingFsDev() which tries to
mknod(). Skip quota tests when we detect that we are running in a user
namespace and return ErrQuotaNotSupported to the caller. This just
restores the status quo.
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
This patch adds the capability for the VFS graphdriver to use
XFS project quotas. It reuses the existing quota management
code that was created by overlay2 on XFS.
It doesn't rely on a filesystem whitelist, but instead
the quota-capability detection code.
Signed-off-by: Sargun Dhillon <sargun@sargun.me>
This adds a mechanism (read-only) to check for project quota support
in a standard way. This mechanism is leveraged by the tests, which
test for the following:
1. Can we get a quota controller?
2. Can we set the quota for a particular directory?
3. Is the quota being over-enforced?
4. Is the quota being under-enforced?
5. Can we retrieve the quota?
Signed-off-by: Sargun Dhillon <sargun@sargun.me>
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>
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>
