forked from security/hakurei
Ophestra
6f719bc3c1
The mutex is not really doing anything, none of these methods make sense when called concurrently anyway. The copylocks analysis is still satisfied by the noCopy struct. Signed-off-by: Ophestra <cat@gensokyo.uk>
47 lines
1.2 KiB
Go
47 lines
1.2 KiB
Go
package system
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import (
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"fmt"
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"os"
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)
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// Link appends [HardlinkOp] to [I] the [Process] criteria.
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func (sys *I) Link(oldname, newname string) *I { return sys.LinkFileType(Process, oldname, newname) }
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// LinkFileType appends [HardlinkOp] to [I].
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func (sys *I) LinkFileType(et Enablement, oldname, newname string) *I {
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sys.ops = append(sys.ops, &HardlinkOp{et, newname, oldname})
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return sys
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}
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// HardlinkOp maintains a hardlink until its [Enablement] is no longer satisfied.
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type HardlinkOp struct {
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et Enablement
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dst, src string
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}
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func (l *HardlinkOp) Type() Enablement { return l.et }
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func (l *HardlinkOp) apply(*I) error {
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msg.Verbose("linking", l)
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return newOpError("hardlink", os.Link(l.src, l.dst), false)
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}
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func (l *HardlinkOp) revert(_ *I, ec *Criteria) error {
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if ec.hasType(l) {
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msg.Verbosef("removing hard link %q", l.dst)
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return newOpError("hardlink", os.Remove(l.dst), true)
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} else {
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msg.Verbosef("skipping hard link %q", l.dst)
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return nil
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}
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}
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func (l *HardlinkOp) Is(o Op) bool {
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target, ok := o.(*HardlinkOp)
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return ok && l != nil && target != nil && *l == *target
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}
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func (l *HardlinkOp) Path() string { return l.src }
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func (l *HardlinkOp) String() string { return fmt.Sprintf("%q from %q", l.dst, l.src) }
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