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8059309: network tests fail with "java.net.SocketException: Couldn't obtain phys addr" when run as "root"

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The solaris specific code is changed to use the fallback mechanism if the DLPI interface returns an error indicating that the operation is unsupported. In addition, NetworkInterface::getHardwareAddress is changed to always return null for the loopback interface.

Reviewed-by: alanb
This commit is contained in:
Daniel Fuchs 2020-03-12 18:31:49 +00:00
parent 3ee99ca1d7
commit 58337b12f8
3 changed files with 96 additions and 2 deletions
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16
src/java.base/unix/native/libnet/NetworkInterface.c
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@ -1,5 +1,5 @@
/*
* Copyright (c) 2000, 2019, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2000, 2020, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@ -1884,6 +1884,7 @@ static int getMacFromDevice
int fd;
dl_phys_addr_req_t dlpareq;
dl_phys_addr_ack_t *dlpaack;
dl_error_ack_t *dlerack;
struct strbuf msg;
char buf[128];
int flags = 0;
@ -1920,6 +1921,19 @@ static int getMacFromDevice
return -1;
}
if (dlpaack->dl_primitive == DL_ERROR_ACK) {
dlerack = (dl_error_ack_t *)buf;
if (dlerack->dl_error_primitive != DL_PHYS_ADDR_REQ) {
JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException",
"Couldn't obtain physical address\n");
return -1;
}
if (dlerack->dl_errno == DL_UNSUPPORTED) {
// fallback to lookup in the ARP table
return 0;
}
}
if (msg.len < DL_PHYS_ADDR_ACK_SIZE || dlpaack->dl_primitive != DL_PHYS_ADDR_ACK) {
JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException",
"Couldn't obtain phys addr\n");