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ipn: generate LoginProfileView and use it instead of *LoginProfile where appropriate

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Conventionally, we use views (e.g., ipn.PrefsView, tailcfg.NodeView, etc.) when
dealing with structs that shouldn't be mutated. However, ipn.LoginProfile has been
an exception so far, with a mix of passing and returning LoginProfile by reference
(allowing accidental mutations) and by value (which is wasteful, given its
current size of 192 bytes).

In this PR, we generate an ipn.LoginProfileView and use it instead of passing/returning
LoginProfiles by mutable reference or copying them when passing/returning by value.
Now, LoginProfiles can only be mutated by (*profileManager).setProfilePrefs.

Updates #14823

Signed-off-by: Nick Khyl <nickk@tailscale.com>
This commit is contained in:
Nick Khyl
2025-01-30 11:24:25 -06:00
committed by Nick Khyl
parent 7d5fe13d27
commit 4e7f4086b2
12 changed files with 254 additions and 151 deletions
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4
ipn/ipnlocal/network-lock.go
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@@ -407,7 +407,7 @@ func (b *LocalBackend) tkaApplyDisablementLocked(secret []byte) error {
//
// b.mu must be held.
func (b *LocalBackend) chonkPathLocked() string {
return filepath.Join(b.TailscaleVarRoot(), "tka-profiles", string(b.pm.CurrentProfile().ID))
return filepath.Join(b.TailscaleVarRoot(), "tka-profiles", string(b.pm.CurrentProfile().ID()))
}
// tkaBootstrapFromGenesisLocked initializes the local (on-disk) state of the
@@ -455,7 +455,7 @@ func (b *LocalBackend) tkaBootstrapFromGenesisLocked(g tkatype.MarshaledAUM, per
}
b.tka = &tkaState{
profile: b.pm.CurrentProfile().ID,
profile: b.pm.CurrentProfile().ID(),
authority: authority,
storage: chonk,
}