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Merge pull request #2539 from kolyshkin/ext-pidns-nits 

external pidns c/r code nits
This commit is contained in:
Mrunal Patel 2020-08-17 11:41:46 -07:00 committed by GitHub
parent b70de388e4 e54d1e4715
commit 9ada2e6d4f
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 8 additions and 7 deletions
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15
libcontainer/container_linux.go
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@ -853,7 +853,7 @@ func (c *linuxContainer) criuSupportsExtNS(t configs.NamespaceType) bool {
return c.checkCriuVersion(minVersion) == nil
}
func (c *linuxContainer) criuNsToKey(t configs.NamespaceType) string {
func criuNsToKey(t configs.NamespaceType) string {
return "extRoot" + strings.Title(configs.NsName(t)) + "NS"
}
@ -873,7 +873,7 @@ func (c *linuxContainer) handleCheckpointingExternalNamespaces(rpcOpts *criurpc.
if err := unix.Stat(nsPath, &ns); err != nil {
return err
}
criuExternal := fmt.Sprintf("%s[%d]:%s", configs.NsName(t), ns.Ino, c.criuNsToKey(t))
criuExternal := fmt.Sprintf("%s[%d]:%s", configs.NsName(t), ns.Ino, criuNsToKey(t))
rpcOpts.External = append(rpcOpts.External, criuExternal)
return nil
@ -897,11 +897,12 @@ func (c *linuxContainer) handleRestoringExternalNamespaces(rpcOpts *criurpc.Criu
logrus.Errorf("If a specific network namespace is defined it must exist: %s", err)
return fmt.Errorf("Requested network namespace %v does not exist", nsPath)
}
inheritFd := new(criurpc.InheritFd)
inheritFd.Key = proto.String(c.criuNsToKey(t))
// The offset of four is necessary because 0, 1, 2 and 3 is already
// used by stdin, stdout, stderr, 'criu swrk' socket.
inheritFd.Fd = proto.Int32(int32(4 + len(*extraFiles)))
inheritFd := &criurpc.InheritFd{
Key: proto.String(criuNsToKey(t)),
// The offset of four is necessary because 0, 1, 2 and 3 are
// already used by stdin, stdout, stderr, 'criu swrk' socket.
Fd: proto.Int32(int32(4 + len(*extraFiles))),
}
rpcOpts.InheritFd = append(rpcOpts.InheritFd, inheritFd)
// All open FDs need to be transferred to CRIU via extraFiles
*extraFiles = append(*extraFiles, nsFd)