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https://github.com/opencontainers/runc.git
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Michael Crosby
549f508d5b
This changes the namespace configuration on the config to include the name of the namespace along with an optional path. This path is used to point to a file of another namespace for the namespace so that it can be joined in place of the empty, initialized namespace. Signed-off-by: Michael Crosby <crosbymichael@gmail.com>
39 lines
912 B
Go
39 lines
912 B
Go
// +build linux
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package namespaces
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import (
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"os"
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"syscall"
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"github.com/docker/libcontainer"
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)
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type initError struct {
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Message string `json:"message,omitempty"`
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}
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func (i initError) Error() string {
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return i.Message
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}
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// New returns a newly initialized Pipe for communication between processes
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func newInitPipe() (parent *os.File, child *os.File, err error) {
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fds, err := syscall.Socketpair(syscall.AF_LOCAL, syscall.SOCK_STREAM|syscall.SOCK_CLOEXEC, 0)
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if err != nil {
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return nil, nil, err
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}
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return os.NewFile(uintptr(fds[1]), "parent"), os.NewFile(uintptr(fds[0]), "child"), nil
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}
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// GetNamespaceFlags parses the container's Namespaces options to set the correct
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// flags on clone, unshare, and setns
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func GetNamespaceFlags(namespaces []libcontainer.Namespace) (flag int) {
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for _, v := range namespaces {
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if ns := GetNamespace(v.Name); ns != nil {
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flag |= ns.Value
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}
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}
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return flag
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}
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