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ipn/ipnlocal: be more assertive about rules for applyPrefsToHostinfo (now Locked)

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The old docs were too cagey.

Change-Id: I92c4fdc4165e7ca35c4537aebe51eb3604b56f6d
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This commit is contained in:
Brad Fitzpatrick 2022-11-15 21:22:09 -08:00 committed by Brad Fitzpatrick
parent d3878ecd62
commit 6ea2d01626
1 changed files with 4 additions and 4 deletions
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8
ipn/ipnlocal/local.go
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@ -1184,7 +1184,7 @@ func (b *LocalBackend) Start(opts ipn.Options) error {
if b.inServerMode || runtime.GOOS == "windows" {
b.logf("Start: serverMode=%v", b.inServerMode)
}
b.applyPrefsToHostinfo(hostinfo, prefs)
b.applyPrefsToHostinfoLocked(hostinfo, prefs)
b.setNetMapLocked(nil)
persistv := prefs.Persist()
@ -2213,7 +2213,7 @@ func (b *LocalBackend) setPrefsLockedOnEntry(caller string, newp *ipn.Prefs) ipn
oldHi := b.hostinfo
newHi := oldHi.Clone()
b.applyPrefsToHostinfo(newHi, newp.View())
b.applyPrefsToHostinfoLocked(newHi, newp.View())
b.hostinfo = newHi
hostInfoChanged := !oldHi.Equal(newHi)
cc := b.cc
@ -2954,8 +2954,8 @@ func unmapIPPrefixes(ippsList ...[]netip.Prefix) (ret []netip.Prefix) {
return ret
}
// Warning: b.mu might be held. Currently (2022-02-17) both callers hold it.
func (b *LocalBackend) applyPrefsToHostinfo(hi *tailcfg.Hostinfo, prefs ipn.PrefsView) {
// b.mu must be held.
func (b *LocalBackend) applyPrefsToHostinfoLocked(hi *tailcfg.Hostinfo, prefs ipn.PrefsView) {
if h := prefs.Hostname(); h != "" {
hi.Hostname = h
}