Ophestra
84549779e3
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This significantly increases readability. Signed-off-by: Ophestra <cat@gensokyo.uk>
42 lines
1.1 KiB
Go
42 lines
1.1 KiB
Go
package container
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import (
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"encoding/gob"
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"fmt"
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"os"
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. "syscall"
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)
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func init() { gob.Register(new(MountProcOp)) }
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// Proc appends an [Op] that mounts a private instance of proc.
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func (f *Ops) Proc(target *Absolute) *Ops {
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*f = append(*f, &MountProcOp{target})
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return f
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}
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// MountProcOp mounts a new instance of [FstypeProc] on container path Target.
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type MountProcOp struct {
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Target *Absolute
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}
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func (p *MountProcOp) early(*setupState) error { return nil }
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func (p *MountProcOp) apply(state *setupState) error {
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if p.Target == nil {
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return EBADE
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}
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target := toSysroot(p.Target.String())
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if err := os.MkdirAll(target, state.ParentPerm); err != nil {
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return wrapErrSelf(err)
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}
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return wrapErrSuffix(Mount(SourceProc, target, FstypeProc, MS_NOSUID|MS_NOEXEC|MS_NODEV, zeroString),
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fmt.Sprintf("cannot mount proc on %q:", p.Target.String()))
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}
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func (p *MountProcOp) Is(op Op) bool {
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vp, ok := op.(*MountProcOp)
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return ok && ((p == nil && vp == nil) || p == vp)
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}
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func (*MountProcOp) prefix() string { return "mounting" }
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func (p *MountProcOp) String() string { return fmt.Sprintf("proc on %q", p.Target) }
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