resolv: Remove support for RES_USE_INET6 and the inet6 option

This functionality was deprecated in glibc 2.25.

This commit only includes the core changes to remove the
functionality.  It does not remove the RES_USE_INET6 handling in the
individual NSS service modules and the res_use_inet6 function.
These changes will happen in future commits.
This commit is contained in:
Florian Weimer 2019-04-08 10:40:31 +02:00
parent 94e358f6d4
commit 3f8b44be0a
15 changed files with 61 additions and 680 deletions

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@ -1,3 +1,40 @@
2019-04-08 Florian Weimer <fweimer@redhat.com>
resolv: Remove support for RES_USE_INET6 and the inet6 option.
* nscd/aicache.c (addhstaiX): Do not disable RES_USE_INET6.
* nscd/nscd_gehst_r.c (__nscd_gethostbyname_r): Always use
GETHOSTBYNAME.
* resolv/Makefile (tests): Remove tst-res_use_inet6.
(tests-internal): Update justification for tst-resolv-res_init,
tst-resolv-res_init-thread.
(tst-res_use_inet6): Remove target.
(CFLAGS-tst-res_use_inet6.c): Do not set variable.
* resolv/res_debug.c (p_option): Remove "inet6" support.
* resolv/res_init.c (res_setoptions): Likewise.
* resolv/res_use_inet6.h: Remove file.
* resolv/resolv-internal.h (DEPRECATED_RES_USE_INET6): Remove
definition.
(res_use_inet6): Always return false.
* resolv/resolv.h (RES_USE_INET6): Remove definition.
* resolv/resolv_context.h: Adjust file comment.
(struct resolv_context): Update comment on __next field.
(__resolv_context_put): Update comment.
* resolv/tst-res_use_inet6.c: Remove file.
* resolv/tst-resolv-res_init-skeleton.c (print_resp): Remove
"inet6" support.
(test_cases): Adjust test case.
* resolv/tst-resolv-threads.c (byname_inet6) Remove function.
(thread_byname2_af_inet6): Use old byname_inet6 code.
(thread_byname_inet6, thread_byname2_af_inet6): Remove functions.
(gai): Remove do_inet6 argument.
(thread_gai_inet, thread_gai_inet6, thread_gai_unspec): Adjust.
(thread_gai_inet_inet6, thread_gai_inet6_inet6)
(thread_gai_unspec_inet6): Remove functions.
(do_test): Adjust thread_funcs.
* sysdeps/posix/getaddrinfo.c (gethosts): Do not restore
RES_USE_INET6 flag.
(gaih_inet): Do not disable RES_USE_INET6 flag.
2019-04-05 Anton Youdkevitch <anton.youdkevitch@bell-sw.com>
* sysdeps/aarch64/multiarch/memcpy_thunderx2.S: Cleanup branching

3
NEWS
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@ -35,6 +35,9 @@ Deprecated and removed features, and other changes affecting compatibility:
* The obsolete and never-implemented XSI STREAMS header files <stropts.h>
and <sys/stropts.h> have been removed.
* Support for the "inet6" option in /etc/resolv.conf and the RES_USE_INET6
resolver flag (deprecated in glibc 2.25) have been removed.
Changes to build and runtime requirements:
* GCC 6.2 or later is required to build the GNU C Library.

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@ -27,7 +27,6 @@
#include <sys/mman.h>
#include <resolv/resolv-internal.h>
#include <resolv/resolv_context.h>
#include <resolv/res_use_inet6.h>
#include <scratch_buffer.h>
#include "dbg_log.h"
@ -100,12 +99,8 @@ addhstaiX (struct database_dyn *db, int fd, request_header *req,
no_more = 0;
nip = hosts_database;
/* Initialize configurations. If we are looking for both IPv4 and
IPv6 address we don't want the lookup functions to automatically
promote IPv4 addresses to IPv6 addresses. Therefore, use the
_no_inet6 variant. */
/* Initialize configurations. */
struct resolv_context *ctx = __resolv_context_get ();
bool enable_inet6 = __resolv_context_disable_inet6 (ctx);
if (ctx == NULL)
no_more = 1;
@ -513,7 +508,6 @@ next_nip:
}
out:
__resolv_context_enable_inet6 (ctx, enable_inet6);
__resolv_context_put (ctx);
if (dataset != NULL && !alloca_used)

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@ -40,11 +40,7 @@ __nscd_gethostbyname_r (const char *name, struct hostent *resultbuf,
char *buffer, size_t buflen, struct hostent **result,
int *h_errnop)
{
request_type reqtype;
reqtype = res_use_inet6 () ? GETHOSTBYNAMEv6 : GETHOSTBYNAME;
return nscd_gethst_r (name, strlen (name) + 1, reqtype, resultbuf,
return nscd_gethst_r (name, strlen (name) + 1, GETHOSTBYNAME, resultbuf,
buffer, buflen, result, h_errnop);
}

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@ -52,7 +52,6 @@ tests += \
tst-ns_name_pton \
tst-res_hconf_reorder \
tst-res_hnok \
tst-res_use_inet6 \
tst-resolv-basic \
tst-resolv-binary \
tst-resolv-edns \
@ -70,13 +69,10 @@ tests += \
tst-resolv-ai_idn-nolibidn2 \
tst-resolv-canonname \
# uses DEPRECATED_RES_USE_INET6 from <resolv-internal.h>.
# Needs resolv_context.
tests-internal += \
tst-resolv-res_init \
tst-resolv-res_init-thread \
# Needs resolv_context.
tests-internal += \
tst-resolv-res_ninit \
tst-resolv-threads \
@ -175,7 +171,6 @@ $(objpfx)mtrace-tst-resolv-res_ninit.out: $(objpfx)tst-resolv-res_ninit.out
$(objpfx)tst-bug18665-tcp: $(objpfx)libresolv.so $(shared-thread-library)
$(objpfx)tst-bug18665: $(objpfx)libresolv.so $(shared-thread-library)
$(objpfx)tst-res_use_inet6: $(objpfx)libresolv.so $(shared-thread-library)
$(objpfx)tst-resolv-ai_idn: \
$(libdl) $(objpfx)libresolv.so $(shared-thread-library)
$(objpfx)tst-resolv-ai_idn-latin1: \
@ -211,7 +206,3 @@ $(objpfx)tst-ns_name_compress: $(objpfx)libresolv.so
$(objpfx)tst-ns_name_pton: $(objpfx)libresolv.so
$(objpfx)tst-res_hnok: $(objpfx)libresolv.so
$(objpfx)tst-p_secstodate: $(objpfx)libresolv.so
# This test case uses the deprecated RES_USE_INET6 resolver option.
CFLAGS-tst-res_use_inet6.c += -Wno-error

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@ -607,7 +607,6 @@ p_option(u_long option) {
case RES_INSECURE1: return "insecure1";
case RES_INSECURE2: return "insecure2";
case RES_NOALIASES: return "noaliases";
case DEPRECATED_RES_USE_INET6: return "inet6";
case RES_ROTATE: return "rotate";
case RES_USE_EDNS0: return "edns0";
case RES_SNGLKUP: return "single-request";

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@ -672,7 +672,6 @@ res_setoptions (struct resolv_conf_parser *parser, const char *options)
unsigned long int flag;
} options[] = {
#define STRnLEN(str) str, sizeof (str) - 1
{ STRnLEN ("inet6"), 0, DEPRECATED_RES_USE_INET6 },
{ STRnLEN ("rotate"), 0, RES_ROTATE },
{ STRnLEN ("edns0"), 0, RES_USE_EDNS0 },
{ STRnLEN ("single-request-reopen"), 0, RES_SNGLKUPREOP },

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@ -1,49 +0,0 @@
/* Support functions for handling RES_USE_INET6 in getaddrinfo/nscd.
Copyright (C) 2017-2019 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#ifndef _RES_USE_INET6_H
#define _RES_USE_INET6_H
#include <resolv/resolv_context.h>
#include <resolv/resolv-internal.h>
/* Ensure that RES_USE_INET6 is disabled in *CTX. Return true if
__resolv_context_enable_inet6 below should enable RES_USE_INET6
again. */
static inline bool
__resolv_context_disable_inet6 (struct resolv_context *ctx)
{
if (ctx != NULL && ctx->resp->options & DEPRECATED_RES_USE_INET6)
{
ctx->resp->options &= ~DEPRECATED_RES_USE_INET6;
return true;
}
else
return false;
}
/* If ENABLE, re-enable RES_USE_INET6 in *CTX. To be paired with
__resolv_context_disable_inet6. */
static inline void
__resolv_context_enable_inet6 (struct resolv_context *ctx, bool enable)
{
if (ctx != NULL && enable)
ctx->resp->options |= DEPRECATED_RES_USE_INET6;
}
#endif

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@ -27,15 +27,12 @@
#define RES_F_CONN 0x00000002 /* Socket is connected. */
#define RES_F_EDNS0ERR 0x00000004 /* EDNS0 caused errors. */
/* Internal version of RES_USE_INET6 which does not trigger a
deprecation warning. */
#define DEPRECATED_RES_USE_INET6 0x00002000
/* Legacy function. This needs to be removed once all NSS modules
have been adjusted. */
static inline bool
res_use_inet6 (void)
{
return _res.options & DEPRECATED_RES_USE_INET6;
return false;
}
enum

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@ -118,8 +118,6 @@ struct res_sym {
#define RES_INSECURE1 0x00000400 /* type 1 security disabled */
#define RES_INSECURE2 0x00000800 /* type 2 security disabled */
#define RES_NOALIASES 0x00001000 /* shuts off HOSTALIASES feature */
#define RES_USE_INET6 \
__glibc_macro_warning ("RES_USE_INET6 is deprecated") 0x00002000
#define RES_ROTATE 0x00004000 /* rotate ns list after each query */
#define RES_NOCHECKNAME \
__glibc_macro_warning ("RES_NOCHECKNAME is deprecated") 0x00008000

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@ -26,9 +26,7 @@
allocating a new context. This prevents unexpected reloading of
the resolver configuration. Care is taken to keep the context in
sync with the thread-local _res object. (This does not happen with
__resolv_context_get_override, and __resolv_context_get_no_inet6 may
also interpose another context object if RES_USE_INET6 needs to be
disabled.)
__resolv_context_get_override.)
In contrast to struct __res_state, struct resolv_context is not
affected by ABI compatibility concerns.
@ -62,8 +60,8 @@ struct resolv_context
size_t __refcount; /* Count of reusages by the get functions. */
bool __from_res; /* True if created from _res. */
/* If RES_USE_INET6 was disabled at this level, this field points to
the previous context. */
/* Single-linked list of resolver contexts. Used for memory
deallocation on thread cancellation. */
struct resolv_context *__next;
};
@ -75,8 +73,7 @@ struct resolv_context *__resolv_context_get (void)
libc_hidden_proto (__resolv_context_get)
/* Deallocate the temporary resolver context. Converse of
__resolv_context_get. Restore the RES_USE_INET6 flag if necessary.
Do nothing if CTX is NULL. */
__resolv_context_get. Do nothing if CTX is NULL. */
void __resolv_context_put (struct resolv_context *ctx);
libc_hidden_proto (__resolv_context_put)

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@ -1,509 +0,0 @@
/* Basic functionality tests for inet6 option processing.
Copyright (C) 2016-2019 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <ctype.h>
#include <netdb.h>
#include <resolv.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <support/check.h>
#include <support/check_nss.h>
#include <support/resolv_test.h>
#include <support/support.h>
#include <support/xthread.h>
/* Handle IPv4 reverse lookup responses. Product a PTR record
A-B-C-D.v4.example. */
static void
response_ptr_v4 (const struct resolv_response_context *ctx,
struct resolv_response_builder *b,
const char *qname, uint16_t qclass, uint16_t qtype)
{
int bytes[4];
int offset = -1;
TEST_VERIFY (sscanf (qname, "%d.%d.%d.%d.in-addr.arpa%n",
bytes + 0, bytes + 1, bytes + 2, bytes + 3,
&offset) == 4);
TEST_VERIFY (offset == strlen (qname));
resolv_response_init (b, (struct resolv_response_flags) {});
resolv_response_add_question (b, qname, qclass, qtype);
resolv_response_section (b, ns_s_an);
resolv_response_open_record (b, qname, qclass, T_PTR, 0);
char *name = xasprintf ("%d-%d-%d-%d.v4.example",
bytes[3], bytes[2], bytes[1], bytes[0]);
resolv_response_add_name (b, name);
free (name);
resolv_response_close_record (b);
}
/* Handle IPv6 reverse lookup responses. Produce a PTR record
<32 hex digits>.v6.example. */
static void
response_ptr_v6 (const struct resolv_response_context *ctx,
struct resolv_response_builder *b,
const char *qname, uint16_t qclass, uint16_t qtype)
{
TEST_VERIFY_EXIT (strlen (qname) > 64);
char bytes[33];
for (int i = 0; i < 64; ++i)
if ((i % 2) == 0)
{
TEST_VERIFY (isxdigit ((unsigned char) qname[i]));
bytes[31 - i / 2] = qname[i];
}
else
TEST_VERIFY_EXIT (qname[i] == '.');
bytes[32] = '\0';
resolv_response_init (b, (struct resolv_response_flags) {});
resolv_response_add_question (b, qname, qclass, qtype);
resolv_response_section (b, ns_s_an);
resolv_response_open_record (b, qname, qclass, T_PTR, 0);
char *name = xasprintf ("%s.v6.example", bytes);
resolv_response_add_name (b, name);
free (name);
resolv_response_close_record (b);
}
/* Produce a response based on QNAME: Certain characters in the first
label of QNAME trigger the inclusion of resource records:
'a' A record (IPv4 address)
'q' AAAA record (quad A record, IPv6 address)
'p' PTR record
'm' record type must match QTYPE (no additional records)
'6' stop flag processing if QTYPE == AAAA
For 'a' and 'q', QTYPE is ignored for record type selection if 'm'
is not specified.
in-addr.arpa and ip6.arpa queries are handled separately in
response_ptr_v4 and response_ptr_v6. */
static void
response (const struct resolv_response_context *ctx,
struct resolv_response_builder *b,
const char *qname, uint16_t qclass, uint16_t qtype)
{
if (strstr (qname, ".in-addr.arpa") != NULL)
return response_ptr_v4 (ctx, b, qname, qclass, qtype);
else if (strstr (qname, ".ip6.arpa") != NULL)
return response_ptr_v6 (ctx, b, qname, qclass, qtype);
bool include_a = false;
bool include_aaaa = false;
bool include_match = false;
bool include_ptr = false;
for (const char *p = qname; *p != '.' && *p != '\0'; ++p)
{
if (*p == 'a')
include_a = true;
else if (*p == 'q')
include_aaaa = true;
else if (*p == 'm')
include_match = true;
else if (*p == 'p')
include_ptr = true;
else if (*p == '6' && qtype == T_AAAA)
break;
}
if (include_match)
{
if (qtype == T_A)
include_aaaa = false;
else if (qtype == T_AAAA)
include_a = false;
}
resolv_response_init (b, (struct resolv_response_flags) {});
resolv_response_add_question (b, qname, qclass, qtype);
resolv_response_section (b, ns_s_an);
if (include_a)
{
char ipv4[4] = {192, 0, 2, 17};
resolv_response_open_record (b, qname, qclass, T_A, 0);
resolv_response_add_data (b, &ipv4, sizeof (ipv4));
resolv_response_close_record (b);
}
if (include_aaaa)
{
char ipv6[16]
= {0x20, 0x01, 0xd, 0xb8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1};
resolv_response_open_record (b, qname, qclass, T_AAAA, 0);
resolv_response_add_data (b, &ipv6, sizeof (ipv6));
resolv_response_close_record (b);
}
if (include_ptr)
{
resolv_response_open_record (b, qname, qclass, T_PTR, 0);
resolv_response_add_name (b, "ptr-target.example");
resolv_response_close_record (b);
}
}
/* Test that getaddrinfo is not influenced by RES_USE_INET6. */
static void
test_gai (void)
{
{
struct addrinfo hints =
{
.ai_family = AF_UNSPEC,
.ai_socktype = SOCK_STREAM,
.ai_protocol = IPPROTO_TCP,
};
struct addrinfo *ai;
int ret = getaddrinfo ("qam.example", "80", &hints, &ai);
check_addrinfo ("getaddrinfo AF_UNSPEC qam.example", ai, ret,
"address: STREAM/TCP 192.0.2.17 80\n"
"address: STREAM/TCP 2001:db8::1 80\n");
if (ret == 0)
freeaddrinfo (ai);
ret = getaddrinfo ("am.example", "80", &hints, &ai);
check_addrinfo ("getaddrinfo AF_UNSPEC am.example", ai, ret,
"address: STREAM/TCP 192.0.2.17 80\n");
if (ret == 0)
freeaddrinfo (ai);
ret = getaddrinfo ("qa.example", "80", &hints, &ai);
/* Combined A/AAAA responses currently result in address
duplication. */
check_addrinfo ("getaddrinfo AF_UNSPEC qa.example", ai, ret,
"address: STREAM/TCP 192.0.2.17 80\n"
"address: STREAM/TCP 192.0.2.17 80\n"
"address: STREAM/TCP 2001:db8::1 80\n"
"address: STREAM/TCP 2001:db8::1 80\n");
if (ret == 0)
freeaddrinfo (ai);
}
{
struct addrinfo hints =
{
.ai_family = AF_INET,
.ai_socktype = SOCK_STREAM,
.ai_protocol = IPPROTO_TCP,
};
struct addrinfo *ai;
int ret = getaddrinfo ("qam.example", "80", &hints, &ai);
check_addrinfo ("getaddrinfo AF_INET qam.example", ai, ret,
"address: STREAM/TCP 192.0.2.17 80\n");
if (ret == 0)
freeaddrinfo (ai);
ret = getaddrinfo ("am.example", "80", &hints, &ai);
check_addrinfo ("getaddrinfo AF_INET am.example", ai, ret,
"address: STREAM/TCP 192.0.2.17 80\n");
if (ret == 0)
freeaddrinfo (ai);
ret = getaddrinfo ("qa.example", "80", &hints, &ai);
check_addrinfo ("getaddrinfo AF_INET qa.example", ai, ret,
"address: STREAM/TCP 192.0.2.17 80\n");
if (ret == 0)
freeaddrinfo (ai);
}
{
struct addrinfo hints =
{
.ai_family = AF_INET6,
.ai_socktype = SOCK_STREAM,
.ai_protocol = IPPROTO_TCP,
};
struct addrinfo *ai;
int ret = getaddrinfo ("qa.example", "80", &hints, &ai);
check_addrinfo ("getaddrinfo (AF_INET6)", ai, ret,
"address: STREAM/TCP 2001:db8::1 80\n");
if (ret == 0)
freeaddrinfo (ai);
ret = getaddrinfo ("am.example", "80", &hints, &ai);
check_addrinfo ("getaddrinfo AF_INET6 am.example", ai, ret,
"error: No address associated with hostname\n");
if (ret == 0)
freeaddrinfo (ai);
ret = getaddrinfo ("qam.example", "80", &hints, &ai);
check_addrinfo ("getaddrinfo AF_INET6 qam.example", ai, ret,
"address: STREAM/TCP 2001:db8::1 80\n");
if (ret == 0)
freeaddrinfo (ai);
}
}
/* Test gethostbyaddr and getnameinfo. The results are independent of
RES_USE_INET6. */
static void
test_reverse (void)
{
{
char ipv4[4] = { 192, 0, 2, 17 };
check_hostent ("gethostbyaddr AF_INET",
gethostbyaddr (ipv4, sizeof (ipv4), AF_INET),
"name: 192-0-2-17.v4.example\n"
"address: 192.0.2.17\n");
}
{
char ipv6[16]
= {0x20, 0x01, 0xd, 0xb8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1};
check_hostent ("gethostbyaddr AF_INET",
gethostbyaddr (ipv6, sizeof (ipv6), AF_INET6),
"name: 20010db8000000000000000000000001.v6.example\n"
"address: 2001:db8::1\n");
}
{
struct sockaddr_in addr =
{
.sin_family = AF_INET,
.sin_addr = { .s_addr = htonl (0xc0000211) },
.sin_port = htons (80)
};
char host[NI_MAXHOST];
char service[NI_MAXSERV];
int ret = getnameinfo ((struct sockaddr *) &addr, sizeof (addr),
host, sizeof (host), service, sizeof (service),
NI_NUMERICSERV);
TEST_VERIFY (ret == 0);
TEST_VERIFY (strcmp (host, "192-0-2-17.v4.example") == 0);
TEST_VERIFY (strcmp (service, "80") == 0);
}
{
char ipv6[16]
= {0x20, 0x01, 0xd, 0xb8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1};
struct sockaddr_in6 addr =
{
.sin6_family = AF_INET6,
.sin6_port = htons (80),
};
TEST_VERIFY (sizeof (ipv6) == sizeof (addr.sin6_addr));
memcpy (&addr.sin6_addr, ipv6, sizeof (addr.sin6_addr));
char host[NI_MAXHOST];
char service[NI_MAXSERV];
int ret = getnameinfo ((struct sockaddr *) &addr, sizeof (addr),
host, sizeof (host), service, sizeof (service),
NI_NUMERICSERV);
TEST_VERIFY (ret == 0);
TEST_VERIFY
(strcmp (host, "20010db8000000000000000000000001.v6.example") == 0);
TEST_VERIFY (strcmp (service, "80") == 0);
}
}
/* Test that gethostbyname2 is mostly not influenced by
RES_USE_INET6. */
static void
test_get2_any (void)
{
check_hostent ("gethostbyname2 AF_INET am.example",
gethostbyname2 ("am.example", AF_INET),
"name: am.example\n"
"address: 192.0.2.17\n");
check_hostent ("gethostbyname2 AF_INET a.example",
gethostbyname2 ("a.example", AF_INET),
"name: a.example\n"
"address: 192.0.2.17\n");
check_hostent ("gethostbyname2 AF_INET qm.example",
gethostbyname2 ("qm.example", AF_INET),
"error: NO_ADDRESS\n");
check_hostent ("gethostbyname2 AF_INET q.example",
gethostbyname2 ("q.example", AF_INET),
"error: NO_RECOVERY\n");
check_hostent ("gethostbyname2 AF_INET qam.example",
gethostbyname2 ("qam.example", AF_INET),
"name: qam.example\n"
"address: 192.0.2.17\n");
check_hostent ("gethostbyname2 AF_INET qa.example",
gethostbyname2 ("qa.example", AF_INET),
"name: qa.example\n"
"address: 192.0.2.17\n");
check_hostent ("gethostbyname2 AF_INET6 qm.example",
gethostbyname2 ("qm.example", AF_INET6),
"name: qm.example\n"
"address: 2001:db8::1\n");
check_hostent ("gethostbyname2 AF_INET6 q.example",
gethostbyname2 ("q.example", AF_INET6),
"name: q.example\n"
"address: 2001:db8::1\n");
check_hostent ("gethostbyname2 AF_INET6 qam.example",
gethostbyname2 ("qam.example", AF_INET6),
"name: qam.example\n"
"address: 2001:db8::1\n");
check_hostent ("gethostbyname2 AF_INET6 qa.example",
gethostbyname2 ("qa.example", AF_INET6),
"name: qa.example\n"
"address: 2001:db8::1\n");
/* Additional AF_INET6 tests depend on RES_USE_INET6; see below. */
test_reverse ();
}
/* gethostbyname2 tests with RES_USE_INET6 disabled. */
static void
test_get2_no_inet6 (void)
{
test_get2_any ();
check_hostent ("gethostbyname2 AF_INET6 am.example",
gethostbyname2 ("am.example", AF_INET6),
"error: NO_ADDRESS\n");
check_hostent ("gethostbyname2 AF_INET6 a.example",
gethostbyname2 ("a.example", AF_INET6),
"error: NO_RECOVERY\n");
}
/* gethostbyname2 tests with RES_USE_INET6 enabled. */
static void
test_get2_inet6 (void)
{
test_get2_any ();
check_hostent ("gethostbyname2 AF_INET6 am.example",
gethostbyname2 ("am.example", AF_INET6),
"name: am.example\n"
"address: ::ffff:192.0.2.17\n");
check_hostent ("gethostbyname2 AF_INET6 a.example",
gethostbyname2 ("a.example", AF_INET6),
"error: NO_RECOVERY\n");
}
/* Collection of tests which assume no RES_USE_INET6 flag. */
static void
test_no_inet6 (void)
{
check_hostent ("gethostbyname (\"a.example\")",
gethostbyname ("a.example"),
"name: a.example\n"
"address: 192.0.2.17\n");
check_hostent ("gethostbyname (\"qa.example\")",
gethostbyname ("qa.example"),
"name: qa.example\n"
"address: 192.0.2.17\n");
check_hostent ("gethostbyname (\"am.example\")",
gethostbyname ("am.example"),
"name: am.example\n"
"address: 192.0.2.17\n");
check_hostent ("gethostbyname (\"amp.example\")",
gethostbyname ("amp.example"),
"name: amp.example\n"
"address: 192.0.2.17\n");
check_hostent ("gethostbyname (\"qam.example\")",
gethostbyname ("qam.example"),
"name: qam.example\n"
"address: 192.0.2.17\n");
check_hostent ("gethostbyname (\"q.example\")",
gethostbyname ("q.example"),
"error: NO_RECOVERY\n");
check_hostent ("gethostbyname (\"qm.example\")",
gethostbyname ("qm.example"),
"error: NO_ADDRESS\n");
test_get2_no_inet6 ();
test_get2_no_inet6 ();
test_gai ();
test_get2_no_inet6 ();
test_get2_no_inet6 ();
}
static void *
threadfunc (void *ignored)
{
struct resolv_test *obj = resolv_test_start
((struct resolv_redirect_config)
{
.response_callback = response
});
TEST_VERIFY ((_res.options & RES_USE_INET6) == 0);
test_no_inet6 ();
_res.options |= RES_USE_INET6;
check_hostent ("gethostbyname (\"a.inet6.example\")",
gethostbyname ("a.inet6.example"),
"error: NO_RECOVERY\n");
check_hostent ("gethostbyname (\"am.inet6.example\")",
gethostbyname ("am.inet6.example"),
"name: am.inet6.example\n"
"address: ::ffff:192.0.2.17\n");
check_hostent ("gethostbyname (\"qa.inet6.example\")",
gethostbyname ("qa.inet6.example"),
"name: qa.inet6.example\n"
"address: 2001:db8::1\n");
check_hostent ("gethostbyname (\"qam.inet6.example\")",
gethostbyname ("qam.inet6.example"),
"name: qam.inet6.example\n"
"address: 2001:db8::1\n");
check_hostent ("gethostbyname (\"q.inet6.example\")",
gethostbyname ("q.inet6.example"),
"name: q.inet6.example\n"
"address: 2001:db8::1\n");
check_hostent ("gethostbyname (\"qm.inet6.example\")",
gethostbyname ("qm.inet6.example"),
"name: qm.inet6.example\n"
"address: 2001:db8::1\n");
check_hostent ("gethostbyname (\"amp.inet6.example\")",
gethostbyname ("amp.inet6.example"),
"error: NO_RECOVERY\n");
check_hostent ("gethostbyname (\"qmp.inet6.example\")",
gethostbyname ("qmp.inet6.example"),
"name: qmp.inet6.example\n"
"address: 2001:db8::1\n");
check_hostent ("gethostbyname (\"ap.inet6.example\")",
gethostbyname ("ap.inet6.example"),
"error: NO_RECOVERY\n");
check_hostent ("gethostbyname (\"6ap.inet6.example\")",
gethostbyname ("6ap.inet6.example"),
"name: 6ap.inet6.example\n"
"address: ::ffff:192.0.2.17\n");
check_hostent ("gethostbyname (\"am6p.inet6.example\")",
gethostbyname ("am6p.inet6.example"),
"name: am6p.inet6.example\n"
"address: ::ffff:192.0.2.17\n");
check_hostent ("gethostbyname (\"qp.inet6.example\")",
gethostbyname ("qp.inet6.example"),
"name: qp.inet6.example\n"
"address: 2001:db8::1\n");
test_get2_inet6 ();
test_get2_inet6 ();
test_gai ();
test_get2_inet6 ();
test_get2_inet6 ();
TEST_VERIFY (_res.options & RES_USE_INET6);
_res.options &= ~RES_USE_INET6;
test_no_inet6 ();
resolv_test_end (obj);
return NULL;
}
static int
do_test (void)
{
resolv_test_init ();
/* Attempt to run on a non-main thread first. */
{
pthread_t thr = xpthread_create (NULL, threadfunc, NULL);
xpthread_join (thr);
}
/* Try the main thread next. */
threadfunc (NULL);
return 0;
}
#include <support/test-driver.c>

View File

@ -24,7 +24,6 @@
#include <errno.h>
#include <gnu/lib-names.h>
#include <netdb.h>
#include <resolv/resolv-internal.h> /* For DEPRECATED_RES_USE_INET6. */
#include <resolv/resolv_context.h>
#include <stdio.h>
#include <stdlib.h>
@ -120,7 +119,6 @@ print_resp (FILE *fp, res_state resp)
if (resp->retry != RES_DFLRETRY)
fprintf (fp, " attempts:%d", resp->retry);
print_option_flag (fp, &options, RES_USEVC, "use-vc");
print_option_flag (fp, &options, DEPRECATED_RES_USE_INET6, "inet6");
print_option_flag (fp, &options, RES_ROTATE, "rotate");
print_option_flag (fp, &options, RES_USE_EDNS0, "edns0");
print_option_flag (fp, &options, RES_SNGLKUP,
@ -560,7 +558,7 @@ struct test_case test_cases[] =
"nameserver 192.0.2.1\n"
"nameserver ::1\n"
"nameserver 192.0.2.2\n",
.expected = "options ndots:3 timeout:19 attempts:5 inet6 edns0\n"
.expected = "options ndots:3 timeout:19 attempts:5 edns0\n"
"search corp.example.com example.com\n"
"; search[0]: corp.example.com\n"
"; search[1]: example.com\n"

View File

@ -276,19 +276,12 @@ thread_byname2 (void *closure)
return byname (true);
}
/* Call gethostbyname_r with RES_USE_INET6 (if do_2 is false), or
gethostbyname_r with AF_INET6 (if do_2 is true). */
/* Test gethostbyname2_r with AF_INET6. */
static void *
byname_inet6 (bool do_2)
thread_byname2_af_inet6 (void *closure)
{
int this_thread = get_thread_number ();
xpthread_barrier_wait (&barrier);
if (!do_2)
{
res_init ();
_res.options |= DEPRECATED_RES_USE_INET6;
TEST_VERIFY (strcmp (_res.defdname, "example.com") == 0);
}
for (int i = 0; i < queries_per_thread; ++i)
{
char qname[100];
@ -298,46 +291,19 @@ byname_inet6 (bool do_2)
char buf[1000];
struct hostent *e = NULL;
int herrno;
int ret;
if (do_2)
ret = gethostbyname2_r (qname, AF_INET6, &storage, buf, sizeof (buf),
&e, &herrno);
else
ret = gethostbyname_r (qname, &storage, buf, sizeof (buf),
&e, &herrno);
check_hostent (__func__,
do_2 ? "gethostbyname2_r" : "gethostbyname_r",
qname, ret, e, AF_INET6, i);
int ret = gethostbyname2_r (qname, AF_INET6, &storage, buf, sizeof (buf),
&e, &herrno);
check_hostent (__func__, "gethostbyname2_r", qname, ret, e, AF_INET6, i);
}
return NULL;
}
/* Test gethostbyname_r with AF_INET6. */
static void *
thread_byname_inet6 (void *closure)
{
return byname_inet6 (false);
}
/* Test gethostbyname2_r with AF_INET6. */
static void *
thread_byname2_af_inet6 (void *closure)
{
return byname_inet6 (true);
}
/* Run getaddrinfo tests for FAMILY. */
static void *
gai (int family, bool do_inet6)
gai (int family)
{
int this_thread = get_thread_number ();
xpthread_barrier_wait (&barrier);
if (do_inet6)
{
res_init ();
_res.options |= DEPRECATED_RES_USE_INET6;
check_have_conf ();
}
for (int i = 0; i < queries_per_thread; ++i)
{
char qname[100];
@ -362,42 +328,21 @@ gai (int family, bool do_inet6)
static void *
thread_gai_inet (void *closure)
{
return gai (AF_INET, false);
return gai (AF_INET);
}
/* Test getaddrinfo with AF_INET6. */
static void *
thread_gai_inet6 (void *closure)
{
return gai (AF_INET6, false);
return gai (AF_INET6);
}
/* Test getaddrinfo with AF_UNSPEC. */
static void *
thread_gai_unspec (void *closure)
{
return gai (AF_UNSPEC, false);
}
/* Test getaddrinfo with AF_INET. */
static void *
thread_gai_inet_inet6 (void *closure)
{
return gai (AF_INET, true);
}
/* Test getaddrinfo with AF_INET6. */
static void *
thread_gai_inet6_inet6 (void *closure)
{
return gai (AF_INET6, true);
}
/* Test getaddrinfo with AF_UNSPEC. */
static void *
thread_gai_unspec_inet6 (void *closure)
{
return gai (AF_UNSPEC, true);
return gai (AF_UNSPEC);
}
/* Description of the chroot environment used to run the tests. */
@ -451,7 +396,7 @@ do_test (void)
.server_address_overrides = server_addresses,
});
enum { thread_count = 10 };
enum { thread_count = 6 };
xpthread_barrier_init (&barrier, NULL, thread_count + 1);
pthread_t threads[thread_count];
typedef void *(*thread_func) (void *);
@ -459,14 +404,10 @@ do_test (void)
{
thread_byname,
thread_byname2,
thread_byname_inet6,
thread_byname2_af_inet6,
thread_gai_inet,
thread_gai_inet6,
thread_gai_unspec,
thread_gai_inet_inet6,
thread_gai_inet6_inet6,
thread_gai_unspec_inet6,
};
for (int i = 0; i < thread_count; ++i)
threads[i] = xpthread_create (NULL, thread_funcs[i], NULL);

View File

@ -61,7 +61,6 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#include <nss.h>
#include <resolv/resolv-internal.h>
#include <resolv/resolv_context.h>
#include <resolv/res_use_inet6.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdio_ext.h>
@ -255,7 +254,6 @@ convert_hostent_to_gaih_addrtuple (const struct addrinfo *req,
break; \
if (!scratch_buffer_grow (tmpbuf)) \
{ \
__resolv_context_enable_inet6 (res_ctx, res_enable_inet6); \
__resolv_context_put (res_ctx); \
result = -EAI_MEMORY; \
goto free_and_return; \
@ -266,7 +264,6 @@ convert_hostent_to_gaih_addrtuple (const struct addrinfo *req,
{ \
if (h_errno == NETDB_INTERNAL) \
{ \
__resolv_context_enable_inet6 (res_ctx, res_enable_inet6); \
__resolv_context_put (res_ctx); \
result = -EAI_SYSTEM; \
goto free_and_return; \
@ -280,7 +277,6 @@ convert_hostent_to_gaih_addrtuple (const struct addrinfo *req,
{ \
if (!convert_hostent_to_gaih_addrtuple (req, _family, &th, &addrmem)) \
{ \
__resolv_context_enable_inet6 (res_ctx, res_enable_inet6); \
__resolv_context_put (res_ctx); \
result = -EAI_SYSTEM; \
goto free_and_return; \
@ -558,7 +554,6 @@ gaih_inet (const char *name, const struct gaih_service *service,
enum nss_status status = NSS_STATUS_UNAVAIL;
int no_more;
struct resolv_context *res_ctx = NULL;
bool res_enable_inet6 = false;
/* If we do not have to look for IPv6 addresses or the canonical
name, use the simple, old functions, which do not support
@ -749,7 +744,6 @@ gaih_inet (const char *name, const struct gaih_service *service,
addresses to IPv6 addresses, so we use the no_inet6
function variant. */
res_ctx = __resolv_context_get ();
res_enable_inet6 = __resolv_context_disable_inet6 (res_ctx);
if (res_ctx == NULL)
no_more = 1;
@ -785,8 +779,6 @@ gaih_inet (const char *name, const struct gaih_service *service,
if (!scratch_buffer_grow (tmpbuf))
{
__resolv_context_enable_inet6
(res_ctx, res_enable_inet6);
__resolv_context_put (res_ctx);
result = -EAI_MEMORY;
goto free_and_return;
@ -886,8 +878,6 @@ gaih_inet (const char *name, const struct gaih_service *service,
canonbuf = getcanonname (nip, at, name);
if (canonbuf == NULL)
{
__resolv_context_enable_inet6
(res_ctx, res_enable_inet6);
__resolv_context_put (res_ctx);
result = -EAI_MEMORY;
goto free_and_return;
@ -932,7 +922,6 @@ gaih_inet (const char *name, const struct gaih_service *service,
nip = nip->next;
}
__resolv_context_enable_inet6 (res_ctx, res_enable_inet6);
__resolv_context_put (res_ctx);
/* If we have a failure which sets errno, report it using