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Implement Link operation #7

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Merged
jsipprell merged 3 commits into from
Oct 11, 2021
Merged

Implement Link operation #7

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612b715
Fix Unlink() by correcting the argument order.
DocLambda Sep 17, 2021
e458057
Add link syscall required to link keys and keyrings.
DocLambda Sep 17, 2021
0dde376
Implement Link() function based on the keyctl_Link() syscall.
DocLambda Sep 17, 2021
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7 changes: 6 additions & 1 deletion keyring.go
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Original file line number Diff line number Diff line change
Expand Up @@ -179,9 +179,14 @@ func SetKeyringTTL(kr NamedKeyring, nsecs uint) error {
return err
}

// Link an object to a keyring
func Link(parent Keyring, child Id) error {
return keyctl_Link(keyId(child.Id()), keyId(parent.Id()))
}

// Unlink an object from a keyring
func Unlink(parent Keyring, child Id) error {
return keyctl_Unlink(keyId(parent.Id()), keyId(child.Id()))
return keyctl_Unlink(keyId(child.Id()), keyId(parent.Id()))
}

// Unlink a named keyring from its parent.
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8 changes: 8 additions & 0 deletions sys_linux.go
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Original file line number Diff line number Diff line change
Expand Up @@ -102,6 +102,14 @@ func keyctl_Read(id keyId, b *byte, size int) (int32, error) {
return int32(v1), nil
}

func keyctl_Link(id, ring keyId) error {
_, _, errno := syscall.Syscall(syscall_keyctl, uintptr(keyctlLink), uintptr(id), uintptr(ring))
if errno != 0 {
return errno
}
return nil
}

func keyctl_Unlink(id, ring keyId) error {
_, _, errno := syscall.Syscall(syscall_keyctl, uintptr(keyctlUnlink), uintptr(id), uintptr(ring))
if errno != 0 {
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