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glibc/glibc-upstream-2.34-324.patch
Arjun Shankar e43852d149 Import glibc-2.34-48.fc35 from f35 
* Thu Oct 13 2022 Arjun Shankar <arjun@redhat.com> - 2.34-48
- Handle non-hostname CNAME aliases during name resolution (#2129005)
- Sync with upstream branch release/2.34/master,
  commit e3976287b22422787f3cc6fc9adda58304b55bd9:
- nscd: Drop local address tuple variable [BZ #29607]
- x86-64: Require BMI1/BMI2 for AVX2 strrchr and wcsrchr implementations
- x86-64: Require BMI2 and LZCNT for AVX2 memrchr implementation
- x86-64: Require BMI2 for AVX2 (raw|w)memchr implementations
- x86-64: Require BMI2 for AVX2 wcs(n)cmp implementations
- x86-64: Require BMI2 for AVX2 strncmp implementation
- x86-64: Require BMI2 for AVX2 strcmp implementation
- x86-64: Require BMI2 for AVX2 str(n)casecmp implementations
- x86: include BMI1 and BMI2 in x86-64-v3 level
- nptl: Add backoff mechanism to spinlock loop
- sysdeps: Add 'get_fast_jitter' interace in fast-jitter.h
- nptl: Effectively skip CAS in spinlock loop
- Move assignment out of the CAS condition
- Add LLL_MUTEX_READ_LOCK [BZ #28537]
- Avoid extra load with CAS in __pthread_mutex_clocklock_common [BZ #28537]
- Avoid extra load with CAS in __pthread_mutex_lock_full [BZ #28537]
- resolv: Fix building tst-resolv-invalid-cname for earlier C standards
- nss_dns: Rewrite _nss_dns_gethostbyname4_r using current interfaces
- resolv: Add new tst-resolv-invalid-cname
- nss_dns: In gaih_getanswer_slice, skip strange aliases (bug 12154)
  (#2129005)
- nss_dns: Rewrite getanswer_r to match getanswer_ptr (bug 12154, bug 29305)
- nss_dns: Remove remnants of IPv6 address mapping
- nss_dns: Rewrite _nss_dns_gethostbyaddr2_r and getanswer_ptr
- nss_dns: Split getanswer_ptr from getanswer_r
- resolv: Add DNS packet parsing helpers geared towards wire format
- resolv: Add internal __ns_name_length_uncompressed function
- resolv: Add the __ns_samebinaryname function
- resolv: Add internal __res_binary_hnok function
- resolv: Add tst-resolv-aliases
- resolv: Add tst-resolv-byaddr for testing reverse lookup
- gconv: Use 64-bit interfaces in gconv_parseconfdir (bug 29583)
- elf: Fix hwcaps string size overestimation
- nscd: Fix netlink cache invalidation if epoll is used [BZ #29415]
- Apply asm redirections in wchar.h before first use
- Apply asm redirections in stdio.h before first use [BZ #27087]
- elf: Call __libc_early_init for reused namespaces (bug 29528)

Resolves: #2129005
Resolves: #2116960
2022-10-14 14:22:13 +02:00

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commit 7267341ec1b5c591c2e7946d0604d3cf1423db7d
Author: Florian Weimer <fweimer@redhat.com>
Date: Tue Aug 30 10:02:49 2022 +0200
nss_dns: Remove remnants of IPv6 address mapping
res_use_inet6 always returns false since commit 3f8b44be0a658266adff5
("resolv: Remove support for RES_USE_INET6 and the inet6 option").
Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
(cherry picked from commit a7fc30b522a0cd7c8c5e7e285b9531b704e02f04)
diff --git a/resolv/README b/resolv/README
index 514e9bb617e710f1..2146bc3b27a6dc56 100644
--- a/resolv/README
+++ b/resolv/README
@@ -146,6 +146,3 @@ res_libc.c is home-brewn, although parts of it are taken from res_data.c.
res_hconf.c and res_hconf.h were contributed by David Mosberger, and
do not come from BIND.
-
-The files gethnamaddr.c, mapv4v6addr.h and mapv4v6hostent.h are
-leftovers from BIND 4.9.7.
diff --git a/resolv/mapv4v6addr.h b/resolv/mapv4v6addr.h
deleted file mode 100644
index 7f85f7d5e393ec5f..0000000000000000
--- a/resolv/mapv4v6addr.h
+++ /dev/null
@@ -1,69 +0,0 @@
-/*
- * ++Copyright++ 1985, 1988, 1993
- * -
- * Copyright (c) 1985, 1988, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 4. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- * -
- * Portions Copyright (c) 1993 by Digital Equipment Corporation.
- *
- * Permission to use, copy, modify, and distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies, and that
- * the name of Digital Equipment Corporation not be used in advertising or
- * publicity pertaining to distribution of the document or software without
- * specific, written prior permission.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL
- * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT
- * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
- * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
- * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
- * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
- * SOFTWARE.
- * -
- * --Copyright--
- */
-
-#include <string.h>
-#include <arpa/nameser.h>
-
-static void
-map_v4v6_address (const char *src, char *dst)
-{
- u_char *p = (u_char *) dst;
- int i;
-
- /* Move the IPv4 part to the right position. */
- memcpy (dst + 12, src, INADDRSZ);
-
- /* Mark this ipv6 addr as a mapped ipv4. */
- for (i = 0; i < 10; i++)
- *p++ = 0x00;
- *p++ = 0xff;
- *p = 0xff;
-}
diff --git a/resolv/mapv4v6hostent.h b/resolv/mapv4v6hostent.h
deleted file mode 100644
index c11038adf33f154d..0000000000000000
--- a/resolv/mapv4v6hostent.h
+++ /dev/null
@@ -1,84 +0,0 @@
-/*
- * ++Copyright++ 1985, 1988, 1993
- * -
- * Copyright (c) 1985, 1988, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 4. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- * -
- * Portions Copyright (c) 1993 by Digital Equipment Corporation.
- *
- * Permission to use, copy, modify, and distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies, and that
- * the name of Digital Equipment Corporation not be used in advertising or
- * publicity pertaining to distribution of the document or software without
- * specific, written prior permission.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL
- * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT
- * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
- * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
- * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
- * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
- * SOFTWARE.
- * -
- * --Copyright--
- */
-
-#include <arpa/nameser.h>
-#include <sys/socket.h>
-
-typedef union {
- int32_t al;
- char ac;
-} align;
-
-static int
-map_v4v6_hostent (struct hostent *hp, char **bpp, int *lenp)
-{
- char **ap;
-
- if (hp->h_addrtype != AF_INET || hp->h_length != INADDRSZ)
- return 0;
- hp->h_addrtype = AF_INET6;
- hp->h_length = IN6ADDRSZ;
- for (ap = hp->h_addr_list; *ap; ap++)
- {
- int i = sizeof (align) - ((u_long) *bpp % sizeof (align));
-
- if (*lenp < (i + IN6ADDRSZ))
- /* Out of memory. */
- return 1;
- *bpp += i;
- *lenp -= i;
- map_v4v6_address (*ap, *bpp);
- *ap = *bpp;
- *bpp += IN6ADDRSZ;
- *lenp -= IN6ADDRSZ;
- }
- return 0;
-}
diff --git a/resolv/nss_dns/dns-host.c b/resolv/nss_dns/dns-host.c
index 2cd7170f20b60588..f8dc5a0a7d1eb156 100644
--- a/resolv/nss_dns/dns-host.c
+++ b/resolv/nss_dns/dns-host.c
@@ -88,10 +88,6 @@
#include <resolv/resolv-internal.h>
#include <resolv/resolv_context.h>
-/* Get implementations of some internal functions. */
-#include <resolv/mapv4v6addr.h>
-#include <resolv/mapv4v6hostent.h>
-
#define RESOLVSORT
#if PACKETSZ > 65536
@@ -117,7 +113,7 @@ static enum nss_status getanswer_r (struct resolv_context *ctx,
const char *qname, int qtype,
struct hostent *result, char *buffer,
size_t buflen, int *errnop, int *h_errnop,
- int map, int32_t *ttlp, char **canonp);
+ int32_t *ttlp, char **canonp);
static enum nss_status getanswer_ptr (unsigned char *packet, size_t packetlen,
struct alloc_buffer *abuf,
char **hnamep, int *errnop,
@@ -198,7 +194,6 @@ gethostbyname3_context (struct resolv_context *ctx,
char tmp[NS_MAXDNAME];
int size, type, n;
const char *cp;
- int map = 0;
int olderr = errno;
enum nss_status status;
@@ -259,32 +254,12 @@ gethostbyname3_context (struct resolv_context *ctx,
*errnop = EAGAIN;
else
__set_errno (olderr);
-
- /* If we are looking for an IPv6 address and mapping is enabled
- by having the RES_USE_INET6 bit in _res.options set, we try
- another lookup. */
- if (af == AF_INET6 && res_use_inet6 ())
- n = __res_context_search (ctx, name, C_IN, T_A, host_buffer.buf->buf,
- host_buffer.buf != orig_host_buffer
- ? MAXPACKET : 1024, &host_buffer.ptr,
- NULL, NULL, NULL, NULL);
-
- if (n < 0)
- {
- if (host_buffer.buf != orig_host_buffer)
- free (host_buffer.buf);
- return status;
- }
-
- map = 1;
-
- result->h_addrtype = AF_INET;
- result->h_length = INADDRSZ;
}
+ else
+ status = getanswer_r
+ (ctx, host_buffer.buf, n, name, type, result, buffer, buflen,
+ errnop, h_errnop, ttlp, canonp);
- status = getanswer_r
- (ctx, host_buffer.buf, n, name, type, result, buffer, buflen,
- errnop, h_errnop, map, ttlp, canonp);
if (host_buffer.buf != orig_host_buffer)
free (host_buffer.buf);
return status;
@@ -330,13 +305,8 @@ _nss_dns_gethostbyname_r (const char *name, struct hostent *result,
*h_errnop = NETDB_INTERNAL;
return NSS_STATUS_UNAVAIL;
}
- status = NSS_STATUS_NOTFOUND;
- if (res_use_inet6 ())
- status = gethostbyname3_context (ctx, name, AF_INET6, result, buffer,
- buflen, errnop, h_errnop, NULL, NULL);
- if (status == NSS_STATUS_NOTFOUND)
- status = gethostbyname3_context (ctx, name, AF_INET, result, buffer,
- buflen, errnop, h_errnop, NULL, NULL);
+ status = gethostbyname3_context (ctx, name, AF_INET, result, buffer,
+ buflen, errnop, h_errnop, NULL, NULL);
__resolv_context_put (ctx);
return status;
}
@@ -649,7 +619,7 @@ static enum nss_status
getanswer_r (struct resolv_context *ctx,
const querybuf *answer, int anslen, const char *qname, int qtype,
struct hostent *result, char *buffer, size_t buflen,
- int *errnop, int *h_errnop, int map, int32_t *ttlp, char **canonp)
+ int *errnop, int *h_errnop, int32_t *ttlp, char **canonp)
{
struct host_data
{
@@ -665,7 +635,6 @@ getanswer_r (struct resolv_context *ctx,
char *bp, **ap, **hap;
char tbuf[MAXDNAME];
u_char packtmp[NS_MAXCDNAME];
- int have_to_map = 0;
uintptr_t pad = -(uintptr_t) buffer % __alignof__ (struct host_data);
buffer += pad;
buflen = buflen > pad ? buflen - pad : 0;
@@ -846,9 +815,7 @@ getanswer_r (struct resolv_context *ctx,
continue;
}
- if (type == T_A && qtype == T_AAAA && map)
- have_to_map = 1;
- else if (__glibc_unlikely (type != qtype))
+ if (__glibc_unlikely (type != qtype))
{
cp += n;
continue; /* XXX - had_error++ ? */
@@ -945,9 +912,6 @@ getanswer_r (struct resolv_context *ctx,
linebuflen -= n;
}
- if (have_to_map)
- if (map_v4v6_hostent (result, &bp, &linebuflen))
- goto too_small;
*h_errnop = NETDB_SUCCESS;
return NSS_STATUS_SUCCESS;
}
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