47 lines
1.3 KiB
Go
47 lines
1.3 KiB
Go
// +build linux
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package volume
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import (
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"strings"
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mounttypes "github.com/docker/engine-api/types/mount"
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)
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// DefaultPropagationMode defines what propagation mode should be used by
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// default if user has not specified one explicitly.
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const DefaultPropagationMode mounttypes.Propagation = "rprivate"
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// propagation modes
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var propagationModes = map[mounttypes.Propagation]bool{
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mounttypes.PropagationPrivate: true,
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mounttypes.PropagationRPrivate: true,
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mounttypes.PropagationSlave: true,
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mounttypes.PropagationRSlave: true,
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mounttypes.PropagationShared: true,
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mounttypes.PropagationRShared: true,
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}
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// GetPropagation extracts and returns the mount propagation mode. If there
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// are no specifications, then by default it is "private".
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func GetPropagation(mode string) mounttypes.Propagation {
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for _, o := range strings.Split(mode, ",") {
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prop := mounttypes.Propagation(o)
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if propagationModes[prop] {
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return prop
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}
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}
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return DefaultPropagationMode
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}
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// HasPropagation checks if there is a valid propagation mode present in
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// passed string. Returns true if a valid propagation mode specifier is
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// present, false otherwise.
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func HasPropagation(mode string) bool {
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for _, o := range strings.Split(mode, ",") {
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if propagationModes[mounttypes.Propagation(o)] {
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return true
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}
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}
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return false
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}
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