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package container
import (
"encoding/gob"
"fmt"
"syscall"
)
func init() { gob.Register(new(RemountOp)) }
// Remount appends an [Op] that applies [RemountOp.Flags] on container path [RemountOp.Target].
func (f *Ops) Remount(target *Absolute, flags uintptr) *Ops {
*f = append(*f, &RemountOp{target, flags})
return f
}
// RemountOp remounts Target with Flags.
type RemountOp struct {
Target *Absolute
Flags uintptr
}
func (*RemountOp) early(*setupState) error { return nil }
func (r *RemountOp) apply(*setupState) error {
if r.Target == nil {
return syscall.EBADE
}
return wrapErrSuffix(hostProc.remount(toSysroot(r.Target.String()), r.Flags),
fmt.Sprintf("cannot remount %q:", r.Target))
}
func (r *RemountOp) Is(op Op) bool {
vr, ok := op.(*RemountOp)
return ok && ((r == nil && vr == nil) ||
(r.Target != nil && vr.Target != nil && r.Target.Is(vr.Target)) &&
r.Flags == vr.Flags)
}
func (*RemountOp) prefix() string { return "remounting" }
func (r *RemountOp) String() string { return fmt.Sprintf("%q flags %#x", r.Target, r.Flags) }
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