With big DNS answers like the one you get for goodtimesdot.com you can
get a truncated address list if IPv6 mapping is enabled. Instead tell
the caller to resize the buffer.
ESRCH return value.
(_nss_dns_gethostbyname4_r): Likewise.
* resolv/res_init.c (__res_vinit): Initialize nscount to zero.
* sysdeps/posix/getaddrinfo.c (gaih_inet): In case we use
gethostbyname4_r, we don't have a separate IPv6 status, so copy
the no_data variable.
* include/resolv.h: Remove hidden proto declarations for __ns_*
functions. Add them for __dn_count_labels and __p_secstodate.
* include/arpa/nameser.h: Add a number of hidden proto declarations.
Define ns_msg_getflags macro here.
* resolv/res_debug.c: Add hidden definition for __dn_count_labels
and __p_secstodate.
* resolv/Versions: Export functions from <arpa/nameser.h> from
libresolv in version GLIBC_2.9.
* resolv/ns_name.c: Integrate changes from bind 9.5.0. Add necessary
hidden definitions.
* resolv/ns_netint.c: Likewise.
* resolv/ns_parse.c: Likewise.
* resolv/ns_print.c: Likewise.
* resolv/ns_samedomain.c: Likewise.
* resolv/ns_ttl.c: Likewise.
* resolv/arpa/nameser_compat.h: Likewise.
* resolv/arpa/nameser.h: Likewise. Remove macros which redirect
function calls.
* resolv/nss_dns/dns-canon.c (_nss_dns_getcanonname_r): Use __ns_get16
instead of ns_get16.
* resolv/nss_dns/dns-host.c (getanswer_r): Use __ns_get16 and
__ns_get32 instead of ns_get16 and ns_get32 respectively.
(gaih_getanswer_slice): Likewise.
* resolv/Makefile (libresolv-routines): Add ns_date.
* resolv/ns_date.c: New file.
Use it instead of locally defined resplen2 variable.
(res_nsend): Adjust for __libc_res_nsend interface change.
(send_vc): Initialize *resplen2 if necessary. Read length of
package into an appropriately aligned variable. Store converted length
in new variable and use it appropriately.
Add branch prediction help.
* resolv/res_query.c (__libc_res_nquery): Take additional parameter
and pass it on to __libc_res_nsend. Adjust all callers.
(__libc_res_nsearch): Likewise.
(__libc_res_nqeurydomain): Likewise.
* resolv/nss_dns/dns-host.c: Adjust for __libc_res_nsearch interface
change.
(_nss_dns_gethostbyname4): Don't unconditionally allocate tmp array.
Define resplen2 variable and pass it to __libc_res_nsearch and then
to gaih_getanswer.
(getanswer_r): In case of incorrect DNS data don't overread buffer.
Add branch prediction.
(gaih_getanswer_slice): Likewise. Check for invalid data types.
(gaih_getanswer): Don't decode second slice if first one failed due
to a too small buffer. Don't let not found status of second
decoder shadow results of the first.
* resolv/gethnamaddr.c (gethostbyname2): Adjust for __libc_res_nsearch
and __libc_res_nquery interface changes
(gethostbyaddr): Adjust for __libc_res_nquery interface change.
* include/resolv.h: Adjust prototypes for __libc_res_nquery,
__libc_res_nsearch, and __libc_res_nsend.
* resolv/nss_dns/dns-canon.c: Adjust for __libc_res_nquery interface
change.
* resolv/nss_dns/dns-network.c: Adjust for __libc_res_nquery and
__libc_res_nsearch interface changes.
no answers return NSS_STATUS_NOTFOUND.
(gaih_getanswer): Don't call gaih_getanswer_slice if the answer
buffer does not have any content.
* nscd/servicescache.c: Likewise.
prototypes.
* include/arpa/nameser_compat.h: Define T_UNSPEC.
* nis/Versions (libnss_nis): Export _nss_nis_gethostbyname4_r.
(libnss_nisplus): Export _nss_nisplus_gethostbyname4_r.
* nis/nss_nis/nis-hosts.c (LINE_PARSER): Change to also handle
af==AF_UNSPEC.
(_nss_nis_gethostbyname4_r): New function.
* nis/nss_nisplus/nisplus-hosts.c (_nss_nisplus_parse_hostent):
Change to also handle af==AF_UNSPEC.
(get_tablename): New function. Use it to avoid duplication.
(_nss_nisplus_gethostbyname4_r): New function.
* nscd/aicache.c (addhstaiX): Use gethostbyname4_r function is
available.
* nss/Versions (libnss_files): Export _nss_files_gethostbyname4_r.
* nss/nss.h: Define struct gaih_addrtuple.
* nss/nss_files/files-hosts.c (LINE_PARSER): Change to also handle
af==AF_UNSPEC.
(_nss_files_gethostbyname4_r): New function.
* resolv/Versions (libnss_dns): Export _nss_dns_gethostbyname4_r.
* resolv/gethnmaddr.c: Adjust __libc_res_nsearch and __libc_res_nquery
calls.
* resolv/res_query.c (__libc_res_nquery): Take two additional
parameters for second answer buffer. Handle type=T_UNSPEC to mean
look up IPv4 and IPv6.
Change all callers.
* resolv/res_send.c (__libc_res_nsend): Take five aditional parameters
for an additional query and answer buffer. Pass to send_vc and
send_dg.
(send_vc): Send possibly two requests and receive two answers.
(send_dg): Likewise.
* resolv/nss_dns/dns-host.c: Adjust calls to __libc_res_nsearch and
__libc_res_nquery.
(_nss_dns_gethostbyname4_r): New function.
(gaih_getanswer_slice): Likewise.
(gaih_getanswer): Likewise.
* resolv/nss_dns/dns-canon.c (_nss_dns_getcanonname_r): Adjust
__libc_res_nquery call.
* resolv/nss_dns/dns-network.c (_nss_dns_getnetbyaddr_r): Likewise.
(_nss_dns_getnetbyname_r): Adjust __libc_res_nsearch call.
* sysdeps/posix/getaddrinfo.c: Use gethostbyname4_r function is
available.
2008-02-25 Jakub Jelinek <jakub@redhat.com>
[BZ #5790]
* resolv/nss_dns/dns-host.c (_nss_dns_gethostbyaddr2_r): Don't
overwrite *h_errnop/*errnop values from getanswer_r in case of
failure.
_nss_dns_getnetbyaddr2_r.
* resolv/nss_dns/dns-host.c: Define _nss_dns_getnetbyaddr2_r. Pass
extra parameter to getanswer_r.
(_nss_dns_getnetbyaddr_r): Now a wrapper around
_nss_dns_getnetbyaddr2_r.
2007-10-15 Ulrich Drepper <drepper@redhat.com>
[BZ #3425]
* resolv/nss_dns/dns-host.c (getanswer_r): Fail with
NSS_STATUS_NOTFOUND if the server replied with only a CNAME and no
address record to T_A/T_AAAA requests.
* nscd/aicache.c: Prefer using gethostbyname3_r NSS callback to also
get ttl and canonical name. Use these two values.
* resolv/Versions: Export _nss_dns_gethostbyname3_r from libnss_dns.
* resolv/nss_dns/dns-host.c (getanswer_r): Take two new parameters.
If nonnull fill with TTL and pointer to canonical name respectively.
(_nss_dns_gethostbyaddr_r): Pass NULL in new parameters of getanswer_r.
(_nss_dns_gethostbyname2_r): Just wrapper around
_nss_dns_gethostbyname3_r.
(_nss_dns_gethostbyname3_r): Renamed from _nss_dns_gethostbyname2_r.
Take two new parameters which as passed to getanswer_r.
2003-10-26 Ulrich Drepper <drepper@redhat.com>
* resolv/nss_dns/dns-host.c (_nss_dns_gethostbyaddr_r): Default
reverse lookup format for IPv6 addresses is using bitfields and
.ip6.arpa suffix.
* resolv/ns_name.c: Implement encoding and decoding bitfields in
hex format.
2002-10-15 Jakub Jelinek <jakub@redhat.com>
* include/resolv.h (__libc_res_nquery, __libc_res_nsearch,
__libc_res_nsend): New prototypes.
* resolv/res_query.c (QUERYSIZE): Define.
(__libc_res_nquery): Renamed from res_nquery. Added answerp
argument. Allocate only QUERYSIZE bytes first, if res_nmkquery
fails use MAXPACKET buffer. Call __libc_res_nsend instead of
res_nsend, pass answerp.
(res_nquery): Changed into wrapper around __libc_res_nquery.
(__libc_res_nsearch): Renamed from res_nsearch. Added answerp
argument. Call __libc_res_nquerydomain and __libc_res_nquery
instead of the non-__libc_ variants, pass them answerp.
(res_nsearch): Changed into wrapper around __libc_res_nsearch.
(__libc_res_nquerydomain): Renamed from res_nquerydomain.
Added answerp argument. Call __libc_res_nquery instead of
res_nquery, pass answerp.
(res_nquerydomain): Changed into wrapper around
__libc_res_nquerydomain.
* resolv/res_send.c: Include sys/ioctl.h.
(MAXPACKET): Define.
(send_vc): Change arguments. Reallocate answer buffer if it is
too small.
(send_dg): Likewise.
(__libc_res_nsend): Renamed from res_nsend. Added ansp argument.
Reallocate answer buffer if it is too small and hooks are in use.
Adjust calls to send_vc and send_dg.
(res_nsend): Changed into wrapper around __libc_res_nsend.
* resolv/nss_dns/dns-host.c (_nss_dns_gethostbyname2_r): Allocate
just 1K answer buffer on the stack, use __libc_res_nsearch instead
of res_nsearch.
(_nss_dns_gethostbyaddr_r): Similarly with __libc_res_nquery.
* resolv/nss_dns/dns-network.c (_nss_dns_getnetbyaddr_r): Likewise.
(_nss_dns_getnetbyname_r): Similarly with __libc_res_nsearch.
* resolv/gethnamaddr.c (gethostbyname2): Likewise.
(gethostbyaddr): Similarly with __libc_res_nquery.
* resolv/Versions (libresolv): Export __libc_res_nquery and
__libc_res_nsearch at GLIBC_PRIVATE.
2002-10-09 Ulrich Drepper <drepper@redhat.com>
* Versions.def (libc): Add GLIBC_2.3.1.
(libpthread): Add GLIBC_2.3.1.
* include/signal.h: Add libc_hidden_proto for __sigwait, __sigwaitinfo,
and __sigtimedwait.
* signal/Versions: Add __sigtimedwait, __sigwait, and __sigwaitinfo.
* sysdeps/unix/sysv/linux/sigtimedwait.c (__sigtimedwait): Add
libc_hidden_def.
* sysdeps/unix/sysv/linux/sigwait.c (__sigwait): Likewise.
* sysdeps/unix/sysv/linux/sigwaitinfo.c (__sigwaitinfo): Likewise.
* include/sys/msg.h: Declare __libc_msgrcv and __libc_msgsnd.
* sysdeps/unix/sysv/linux/msgrcv.c (__msgrcv): Rename to __libc_msgrcv
and make old name an alias.
* sysdeps/unix/sysv/linux/msgsnd.c (__msgsnd): Rename to __libc_msgsnd
and make old name an alias.
* sysvipc/Versions (libc) [GLIBC_PRIVATE]: Add __libc_msgrcv and
__libc_msgsnd.
* include/sys/uio.h: Declare __libc_readv and __libc_writev.
* misc/Versions (libc) [GLIBC_PRIVATE]: Add __libc_readv and
__libc_writev.
* sysdeps/generic/readv.c (__readv): Rename to __libc_readv and make
old name an alias.
* sysdeps/posix/readv.c: Likewise
* sysdeps/unix/sysv/aix/readv.c: Likewise.
* sysdeps/unix/sysv/linux/readv.c: Likewise.
* sysdeps/generic/writev.c (__writev): Rename to __libc_writev and make
old name an alias.
* sysdeps/posix/writev.c: Likewise
* sysdeps/unix/sysv/aix/writev.c: Likewise.
* sysdeps/unix/sysv/linux/writev.c: Likewise.
* include/sys/wait.h: Declare __waitid.
* posix/Versions (libc) [GLIBC_PRIVATE]: Add __waitid.
* sysdeps/generic/waitid.c (waitid): Rename to __waitid and make old
name an alias.
* sysdeps/posix/waitid.c: Likewise.
* sysdeps/unix/sysv/aix/waitid.c: Likewise.
* sysdeps/unix/sysv/linux/syscalls.list: Add creat syscall.
2002-10-07 Jakub Jelinek <jakub@redhat.com>
* include/alloca.h (__libc_use_alloca, __libc_alloca_cutoff): New
prototypes.
(__MAX_ALLOCA_CUTOFF): Define.
Include allocalim.h.
* resolv/nss_dns/dns-host.c (_nss_dns_gethostbyname2_r,
_nss_dns_gethostbyaddr_r): Use alloca or malloc to allocate
host_buffer depending on __libc_use_alloca.
* resolv/nss_dns/dns-network.c (_nss_dns_getnetbyname_r,
_nss_dns_getnetbyaddr_r): Use alloca or malloc to allocate
net_buffer depending on __libc_use_alloca.
* resolv/res_query.c (res_nquery): Use alloca or malloc to allocate
buf depending on __libc_use_alloca.
* resolv/gethnamaddr.c (gethostbyname2, gethostbyaddr): Likewise.
* stdio-common/vfprintf.c (vfprintf): Use __libc_use_alloca
instead of hardcoded constants.
Pass proper size argument to alloca and compute end for wide char
version.
* stdio-common/printf_fp.c (__printf_fp): Use __libc_use_alloca
instead of hardcoded constants.
* string/strcoll.c (strcoll): Likewise.
* string/strxfrm.c (strxfrm): Likewise.
* sysdeps/posix/readv.c (__readv): Likewise.
* sysdeps/posix/writev.c (__writev): Likewise.
* sysdeps/generic/allocalim.h: New file.
2001-10-26 Ulrich Drepper <drepper@redhat.com>
* string/strxfrm.c [USE_IN_EXTENDED_LOCALE_MODEL]: Correctly get
nrules value.
2001-10-24 H.J. Lu <hjl@gnu.org>
* sysdeps/generic/bits/dlfcn.h (DL_CALL_FCT): Cast to void *.
Use __BEGIN_DECLS/__END_DECLS around prototypes.
* sysdeps/mips/bits/dlfcn.h (DL_CALL_FCT): Likewise.
2001-10-21 Jim Meyering <meyering@lucent.com>
* malloc/obstack.c (_): Honor the setting of ENABLE_NLS. Otherwise,
this code would end up calling gettext even in packages built
with --disable-nls.
* posix/getopt.c (_): Likewise.
* posix/regex.c (_): Likewise.
2001-10-26 Ulrich Drepper <drepper@redhat.com>
* resolv/gethnamaddr.c (gethostbyaddr): Use ip6.addr for reverse
lookup not ip6.int.
* resolv/nss_dns/dns-host.c (_nss_dns_gethostbyaddr_r): Likewise.
Reported by Martin.v.Loewis@t-online.de [PR libc/2598].
2001-10-19 Jakub Jelinek <jakub@redhat.com>
* misc/sys/cdefs.h (__attribute_used__): Define.
* elf/rtld.c (_dl_start): Add __attribute_used__.
* elf/dl-runtime.c (fixup, profile_fixup): Likewise.
2001-07-06 Paul Eggert <eggert@twinsun.com>
* manual/argp.texi: Remove ignored LGPL copyright notice; it's
not appropriate for documentation anyway.
* manual/libc-texinfo.sh: "Library General Public License" ->
"Lesser General Public License".
2001-07-06 Andreas Jaeger <aj@suse.de>
* All files under GPL/LGPL version 2: Place under LGPL version
2.1.
2000-07-10 Mark Kettenis <kettenis@gnu.org>
* resolv/nss_dns/dns-host.c (_nss_dns_gethostbyname2_r): Use
res_hostalias instead of __hostalias for thread-safety.
2000-05-27 Ulrich Drepper <drepper@redhat.com>
* sysdeps/posix/getaddrinfo.c (gaih_inet): If req->ai_family ==
AF_UNSPEC don't allow the IPv6 lookup to return mapped IPv4 addresses.
* nss/nss_files/files-hosts.c (LINE_PARSER): Simplify. Correct
handling of AI_V4MAPPED flag.
* resolv/nss_dns/dns-host.c (_nss_dns_gethostbyname2_r): If lookup
of IPv6 address failed and RES_USE_INET6 bit in _res.options is set,
perform lookup for T_A type and tell getanswer_r to convert the
result with new argument.
(_nss_dns_gethostbyaddr_r): Pass zero as new argument to getanswer_r.
Don't convert addresses from IPv4 to IPv6 here.
(getanswer_r): Take new parameter indicating if mapping from IPv4 to
IPv6 is wanted. Allow qtype and type from reply to disagree if
IPv4 mapping has to be done. Perform mappings if required by the
caller and not if RES_USE_INET6 bit in _res.options is set.
Add several __builtin_expect.
1999-12-03 Andreas Jaeger <aj@suse.de>
* nss/getXXbyYY.c: Include <resolv.h>
(FUNCTION_NAME): Use res_ninit instead of res_init.
* nss/getXXbyYY_r.c [NEED__RES]: Include <resolv.h> for _res
declaration and prototypes.
Remove extra _res declaration.
(INTERNAL): Use thread aware res_ninit function.
* inet/gethstbyad_r.c: Include <resolv.h>.
* resolv/res_data.c: Update from Bind 8.2.2-P5. Moved res_init to
res_libc.c. Disabled unneeded functions.
* resolv/res_libc.c: New file.
* Versions.def: Add version GLIBC_2.2 for libpthread.
Add versions GLIBC_2.1 and GLIBC_2.2 for libresolv.
* include/resolv.h: Add internal interfaces.
* resolv/Makefile (routines): Add new files.
(libresolv-routines): Likewise.
(distribute): Likewise.
* resolv/gethnamaddr.c: Use thread safe resolver functions.
* resolv/nss_dns/dns-host.c: Likewise.
* resolv/nss_dns/dns-network.c: Likewise.
* resolv/arpa/nameser.h: Update from Bind 8.2.2-P5.
* resolv/nsap_addr.c: Likewise.
* resolv/res_comp.c: Likewise.
* resolv/res_debug.c: Likewise.
* resolv/res_init.c: Likewise.
* resolv/res_mkquery.c: Likewise.
* resolv/res_query.c: Likewise.
* resolv/res_send.c: Likewise.
* resolv/resolv.h: Likewise.
* resolv/Versions: Add __res_state and __res_ninit with version
GLIBC_2.2 to libc.
Add new interfaces with version GLIBC_2.2 to libresolv.
* resolv/Banner: Update.
* include/arpa/nameser_compat.h: New file.
* resolv/ns_name.c: New file from Bind 8.2.2-P5.
* resolv/ns_netint.c: Likewise.
* resolv/ns_parse.c: Likewise.
* resolv/ns_print.c: Likewise.
* resolv/ns_samedomain.c: Likewise.
* resolv/ns_ttl.c: Likewise.
* resolv/arpa/nameser_compat.h: Likewise.
* resolv/res_debug.h: Likewise.
Some patches are based on work done by Adam D. Bradley
<artdodge@cs.bu.edu>.
* sysdeps/unix/sysv/linux/configure.in: Remove check for ldconfig,
set always use_ldconfig instead.
1999-10-01 Ulrich Drepper <drepper@cygnus.com>
* resolv/nss_dns/dns-host.c (_nss_dns_gethostbyaddr_r): Align
handling of IPv6 tunnel address handling with bind 8.2.1. Allow
len argument to be greater than needed address size.
* resolv/nss_dns/dns-host.c (_nss_dns_gethostbyname2_r): If res_search
fails don't rely on errno value.
(getanswer_r): Set *ERRNOP in error cases.
* sysdeps/posix/getaddrinfo.c (gaih_local): Test protocol and socktype.
(gaih_inet_serv): Return EIA_NODATA if name is known but has no
associated data. Test for matching numeric address and family.
(getaddrinfo): Remember EAI_NODATA result and return this in case
everything fails.
Reported by Arkadiusz Miskiewicz <misiek@misiek.eu.org>.
* rt/aio_notify.c (__aio_notify_only): Take extra parameter. Pass it
* resolv/nss_dns/dns-host.c (getanswer_r): Cleanup out-of-buffer
handling.
* manual/install.texi (Configuring and compiling): Mention CFLAGS.
