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resolved: also disable stub listener on EPERM

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When running in a user namespace without private networking, resolved would
fail to start. There isn't much difference between EADDRINUSE and EPERM,
so treat them the same, except for the warning message text.
This commit is contained in:
Zbigniew Jędrzejewski-Szmek
2016-10-09 21:22:23 -04:00
parent 424e490b94
commit 0f4db364c9
1 changed files with 9 additions and 3 deletions
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src/resolve/resolved-dns-stub.c
+9 -3
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@@ -511,9 +511,15 @@ int manager_dns_stub_start(Manager *m) {
r = manager_dns_stub_tcp_fd(m);
}
if (r == -EADDRINUSE) {
log_warning("Another process is already listening on %s socket 127.0.0.53:53.\n"
"Turning off local DNS stub support.", t);
if (IN_SET(r, -EADDRINUSE, -EPERM)) {
if (r == -EADDRINUSE)
log_warning_errno(r,
"Another process is already listening on %s socket 127.0.0.53:53.\n"
"Turning off local DNS stub support.", t);
else
log_warning_errno(r,
"Failed to listen on %s socket 127.0.0.53:53: %m.\n"
"Turning off local DNS stub support.", t);
manager_dns_stub_stop(m);
} else if (r < 0)
return log_error_errno(r, "Failed to listen on %s socket 127.0.0.53:53: %m", t);