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net/interfaces: don't try to fork on iOS in likelyHomeRouterIPDarwin

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No subprocesses allowed on iOS. Will need to do this differently later.
This commit is contained in:
Brad Fitzpatrick 2020-07-31 10:35:15 -07:00
parent 8c850947db
commit c253d4f948
1 changed files with 8 additions and 0 deletions
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8
net/interfaces/interfaces_darwin.go
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@ -10,6 +10,7 @@
"go4.org/mem"
"inet.af/netaddr"
"tailscale.com/util/lineread"
"tailscale.com/version"
)
func init() {
@ -32,6 +33,13 @@ func init() {
*/
func likelyHomeRouterIPDarwin() (ret netaddr.IP, ok bool) {
if version.IsMobile() {
// Don't try to do subprocesses on iOS. Ends up with log spam like:
// kernel: "Sandbox: IPNExtension(86580) deny(1) process-fork"
// TODO(bradfitz): let our iOS app register a func with this package
// and have it call into C/Swift to get the routing table.
return ret, false
}
cmd := exec.Command("/usr/sbin/netstat", "-r", "-n", "-f", "inet")
stdout, err := cmd.StdoutPipe()
if err != nil {