Use unix.Eventfd() instead of calling manually reimplementing it using
the raw syscall. Also use the correct corresponding unix.EFD_CLOEXEC
flag instead of unix.FD_CLOEXEC (which can have a different value on
some architectures and thus might lead to unexpected behavior).
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Update golang.org/x/sys to get the Eventfd syscall wrapper and the
corresponding EFD_* flags. These will be used in a successive commit to
simplify code in libcontainer/notify_linux.go.
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
And Stat_t.PID and Stat_t.Name while we're at it. Then use the new
.State property in runType to distinguish between running and
zombie/dead processes, since kill(2) does not [1]. With this change
we no longer claim Running status for zombie/dead processes.
I've also removed the kill(2) call from runType. It was originally
added in 13841ef3 (new-api: return the Running state only if the init
process is alive, 2014-12-23), but we've been accessing
/proc/[pid]/stat since 14e95b2a (Make state detection precise,
2016-07-05, #930), and with the /stat access the kill(2) check is
redundant.
I also don't see much point to the previously-separate
doesInitProcessExist, so I've inlined that logic in runType.
It would be nice to distinguish between "/proc/[pid]/stat doesn't
exist" and errors parsing its contents, but I've skipped that for the
moment.
The Running -> Stopped change in checkpoint_test.go is because the
post-checkpoint process is a zombie, and with this commit zombie
processes are Stopped (and no longer Running).
[1]: https://github.com/opencontainers/runc/pull/1483#issuecomment-307527789
Signed-off-by: W. Trevor King <wking@tremily.us>
And convert the various start-time properties from strings to uint64s.
This removes all internal consumers of the deprecated
GetProcessStartTime function.
Signed-off-by: W. Trevor King <wking@tremily.us>
If someone forks runc and wants to check changes in travis, he will find
that the command 'make BUILDTAGS="${BUILDTAGS}"' fails, because
github.com/opencontainers/runc/ is used in many places to import
packages (e.g. libcontainer).
Signed-off-by: Andrei Vagin <avagin@virtuozzo.com>
Use KeyctlJoinSessionKeyring, KeyctlString and KeyctlSetperm from
golang.org/x/sys/unix instead of manually reimplementing them.
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
And use it only in local tooling that is forwarding the pseudoterminal
master. That way runC no longer has an opinion on the onlcr setting
for folks who are creating a terminal and detaching. They'll use
--console-socket and can setup the pseudoterminal however they like
without runC having an opinion. With this commit, the only cases
where runC still has applies SaneTerminal is when *it* is the process
consuming the master descriptor.
Signed-off-by: W. Trevor King <wking@tremily.us>
Use the NLA_ALIGNTO and NLA_HDRLEN constants from x/sys/unix instead of
syscall, as the syscall package shouldn't be used anymore (except for a
few exceptions).
This also makes the syscall_NLA_HDRLEN workaround for gccgo unnecessary.
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Use the symlink xattr syscall wrappers Lgetxattr, Llistxattr and
Lsetxattr from x/sys/unix (introduced in
golang/sys@b90f89a1e7) 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.
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Follow commit 3d7cb4293c ("Move libcontainer to x/sys/unix") and also
move the examples in README.md from syscall to x/sys/unix.
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Update golang.org/x/sys to get the Lgetxattr, Llistxattr, Lremovexattr
and Lsetxattr syscall wrappers. These will be used in a successive
commit to replace the wrappers in libcontainer/system/xattr_linux.go.
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
With:
$ go get -u github.com/LK4D4/vndr
$ sed -i 's/9a7256cb28ed514b4e1e5f68959914c4c28a92e0/a55a76086885b80f79961eacb876ebd8caf3868d/' vendor.conf
$ vndr
I'm not sure why vndr is messing with github.com/golang/protobuf, but
I assume it knows what it's doing.
The x/sys bumps to master, but I need it for MS_LAZYTIME (added in
github.com/golang/sys@ea9bcade75, unix: generate all Linux go files
from source, 2017-03-08).
Signed-off-by: W. Trevor King <wking@tremily.us>
Since syscall is outdated and broken for some architectures,
use x/sys/unix instead.
There are still some dependencies on the syscall package that will
remain in syscall for the forseeable future:
Errno
Signal
SysProcAttr
Additionally:
- os still uses syscall, so it needs to be kept for anything
returning *os.ProcessState, such as process.Wait.
Signed-off-by: Christy Perez <christy@linux.vnet.ibm.com>
* User Case:
User could use prestart hook to add block devices to container. so the
hook should have a way to set the permissions of the devices.
Just move cgroup config operation before prestart hook will work.
Signed-off-by: Wentao Zhang <zhangwentao234@huawei.com>
This patch mimics the behavior of "rm -rf" so that if a container
doesn't exist and you force delete it, it won't error out.
Signed-off-by: Antonio Murdaca <runcom@redhat.com>
FreeBSD does not support cgroups or namespaces, which the code suggested, and is not supported
in runc anyway right now. So clean up the file naming to use `_linux` where appropriate.
Signed-off-by: Justin Cormack <justin.cormack@docker.com>
Michael Crosby
Tobias Klauser
W. Trevor King
Mrunal Patel
Andrei Vagin
Kang Liang
Aleksa Sarai
Daniel, Dao Quang Minh
Qiang Huang
Christy Perez
Justin Cormack
Wentao Zhang
Antonio Murdaca
Valentin Rothberg