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2009-06-26Implement second fallback mode for DNS requests.Ulrich Drepper
There is some more shardware/software out there which has problems if two DNS requests are sent using the same tuple (source addr, source port, dest addr, dest port) This can range from firewalls to load balancers. Some of the vendors already fixed it in response to this problem. Still, we need a way to make glibc work with broken environments. The single-request-reopen flag can be used or we fall back automatically to this mode.
2009-06-11Remember we switched to single-request mode.Ulrich Drepper
This change prevents repetition in most later calls of the resolver in case the DNS server or the network connection is broken.
2009-05-16Remove redundant .gitignore files.Andreas Schwab
2009-05-15rename each .cvsignore file to .gitignoreJim Meyering
2009-05-09[BZ #10128]Ulrich Drepper
2009-05-05 Aurelien Jarno <aurelien@aurel32.net> [BZ #10128] * resolv/res_query.c (__libc_res_nquery): If one query returns NOTIMP or FORMERR and the other NOERROR, don't raise an error.
2009-04-16(send_dg): Don't just ignore the result we got in case we only receive one ↵Ulrich Drepper
reply in single-request mode.
2009-04-16* resolv/res_send.c (send_dg): Don't switch into single-requestUlrich Drepper
mode if we already are in it.
2009-04-08* malloc/malloc.c (_int_realloc): Add parameter with old blockUlrich Drepper
size. Remove duplicated test. Don't handle mmap'ed blocks here. Adjust all callers. * malloc/hooks.c (realloc_check): Adjust _int_realloc call.
2009-04-07* resolv/res_hconf.c (_res_hconf_trim_domain): Use strcasecmpUlrich Drepper
instead of __strcasecmp. * resolv/nss_dns/dns-host.c (getanswer_r): Likewise.
2009-04-07* resolv/resolv.h (RES_SNGLKUP): Define.cvs/fedora-glibc-20090407T0545Ulrich Drepper
* resolv/res_init.c (res_setoptions): Recognize single-request option. * resolv/res_send.c (send_dg): If we sent two requests at once and only get one reply before timeout switch to mode where we send the second request only after the first answer has been received.
2009-02-16* stdlib/monetary.h: Uglify function parameter names. cvs/fedora-glibc-20090218T1534Jakub Jelinek
* sunrpc/rpc/pmap_clnt.h: Likewise. * sunrpc/rpc/svc.h: Likewise. * sunrpc/rpc/xdr.h: Likewise. * sunrpc/rpc/clnt.h: Likewise. * resolv/netdb.h: Likewise. * resolv/arpa/nameser.h: Likewise. * resolv/resolv.h: Likewise. * argp/argp.h: Likewise. * locale/langinfo.h: Likewise. * io/sys/stat.h: Likewise. * posix/spawn.h: Likewise. * nis/rpcsvc/nislib.h: Likewise. * malloc/obstack.h: Likewise. * sysdeps/ia64/bits/link.h: Likewise. * sysdeps/i386/bits/link.h: Likewise. * sysdeps/s390/bits/link.h: Likewise. * sysdeps/powerpc/bits/link.h: Likewise. * sysdeps/x86_64/bits/link.h: Likewise. * sysdeps/sparc/bits/link.h: Likewise. * sysdeps/sh/bits/link.h: Likewise. * sysdeps/unix/sysv/linux/i386/sys/io.h: Likewise. * sysdeps/unix/sysv/linux/x86_64/sys/io.h: Likewise. * sysdeps/unix/sysv/linux/sparc/sys/eventfd.h: Likewise. * sysdeps/unix/sysv/linux/sys/eventfd.h: Likewise. 2009-02-16 Jakub Jelinek <jakub@redhat.com> * stdlib/monetary.h: Uglify function parameter names. * sunrpc/rpc/pmap_clnt.h: Likewise. * sunrpc/rpc/svc.h: Likewise. * sunrpc/rpc/xdr.h: Likewise. * sunrpc/rpc/clnt.h: Likewise. * resolv/netdb.h: Likewise. * resolv/arpa/nameser.h: Likewise. * resolv/resolv.h: Likewise. * argp/argp.h: Likewise. * locale/langinfo.h: Likewise. * io/sys/stat.h: Likewise. * posix/spawn.h: Likewise. * nis/rpcsvc/nislib.h: Likewise. * malloc/obstack.h: Likewise. * sysdeps/ia64/bits/link.h: Likewise. * sysdeps/i386/bits/link.h: Likewise. * sysdeps/s390/bits/link.h: Likewise. * sysdeps/powerpc/bits/link.h: Likewise. * sysdeps/x86_64/bits/link.h: Likewise. * sysdeps/sparc/bits/link.h: Likewise. * sysdeps/sh/bits/link.h: Likewise. * sysdeps/unix/sysv/linux/i386/sys/io.h: Likewise. * sysdeps/unix/sysv/linux/x86_64/sys/io.h: Likewise. * sysdeps/unix/sysv/linux/sparc/sys/eventfd.h: Likewise. * sysdeps/unix/sysv/linux/sys/eventfd.h: Likewise.
2009-02-07[BZ #9781]Ulrich Drepper
* grp/compat-initgroups.c (compat_call): Switch to use malloc when the input line is too long.
2009-01-08* resolv/nss_dns/dns-host.c (_nss_dns_gethostbyaddr2_r): Check andUlrich Drepper
adjust the buffer alignment.
2008-12-29* resolv/res_init.c (__res_vinit): Count all servers in statp->nscount.Ulrich Drepper
2008-12-08* resolv/res_send.c (send_dg): Use correct guards for SOCK_CLOEXECUlrich Drepper
use. * sysdeps/unix/sysv/linux/kernel-features.h: Fix typo in accept4 handling.
2008-12-08* resolv/res_init.c (__res_vinit): Always assign to statp->nscountUlrich Drepper
after reading name server list.
2008-12-03* resolv/nss_dns/dns-host.c (_nss_dns_gethostbyname3_r): RecognizeUlrich Drepper
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.
2008-12-03* resolv/res_init.c (__res_vinit): Fill in IPv4 name serverUlrich Drepper
information at the correct index.
2008-12-02* resolv/res_send.c (send_dg): Create sockets with non-blockingUlrich Drepper
flag already set.
2008-11-12(gaih_getanswer_slice): Don't abort for unknown request types for now.Ulrich Drepper
2008-10-31[BZ #6942]Ulrich Drepper
2008-10-07 Andreas Schwab <schwab@suse.de> [BZ #6942] * resolv/res_send.c (send_vc): Fix last change. (send_dg): Align here as well.
2008-10-30* grp/initgroups.c (internal_getgrouplist): Don't prematurelyUlrich Drepper
abort if there is no initgroups_dyn function.
2008-10-30* resolv/res_send.c (send_dg): On timeout, only return nonzeroUlrich Drepper
result if any of the queries really provided an answer.
2008-10-24Fix tests for existence of second reply.Ulrich Drepper
2008-10-24* resolv/res_query.c (__libc_res_nquery): Add a few casts.Ulrich Drepper
2008-10-06(send_vc): Fix use of unaligned address. Properly handle partial reads.Ulrich Drepper
2008-08-12(res_nmkquery): Call ns_name_compress directly instead of going through dn_comp.Ulrich Drepper
2008-08-01* Versions.def: Add GLIBC_2.9 to libresolv.Ulrich Drepper
* 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.
2008-07-28* resolv/res_send.c (__libc_res_nsend): Take additional parameter.cvs/fedora-glibc-20080728T2320Ulrich Drepper
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.
2008-07-09* resolv/res_send.c: Remove unnecessary res_pquery prototype.Ulrich Drepper
2008-07-09* resolv/res_query.c (__libc_res_nquery): Issue debug message onlyUlrich Drepper
if DEBUG is defined.
2008-07-09* resolv/res_query.c (__libc_res_nquery): Align buffer for T_AAAAUlrich Drepper
query. Adjust buffer size computation for padding.
2008-06-27* resolv/res_debig.c (__p_type_syms): Add ns_t_dname entry.Ulrich Drepper
Patch by Peter Jones <pjones@redhat.com>.
2008-06-13* resolv/nss_dns/dns-host.c (gaih_getanswer): Don'tUlrich Drepper
unconditionally use second gaih_getanswer_slice result.
2008-06-10* resolv/nss_dns/dns-host.c (gaih_getanswer_slice): Also log andUlrich Drepper
ignore T_DNAME messages. * resolv/arpa/nameser_compat.h (T_DNAME): Define.
2008-06-10(T_DNAME): Define.Ulrich Drepper
2008-05-24* resolv/res_send.c (send_dg): If we already have one of twoUlrich Drepper
answers and the server reports SERVFAI, NOTIMP, or REFUSED, then use the one answer insted of failing.
2008-05-19* resolv/res_query.c (__libc_res_nquery): In case one of twoUlrich Drepper
answer was too short don't try to read that answer's header. * resolv/res_send.c (send_dg): In case of timeout and there are two queries and one has been answered, return value indicating success.
2008-05-17* resolv/nss_dns/dns-host.c (gaih_getanswer_slice): If there areUlrich Drepper
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.
2008-05-10* include/resolv.h: Adjust __libc_res_nquery and __libc_res_nsendUlrich Drepper
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.
2008-04-20* resolv/res_mkquery.c (__res_nopt): Use NS_PUT16 instead of ns_put16.Ulrich Drepper
2008-04-07Handle scope IDs in resolv.conf.Ulrich Drepper
2008-03-19Remove useless "if" before "free".Ulrich Drepper
2008-03-04[BZ #5790]Ulrich Drepper
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.
2008-02-15[BZ #5737]cvs/fedora-glibc-20080216T1726Ulrich Drepper
2008-02-15 Ulrich Drepper <drepper@redhat.com> [BZ #5737] * resolv/netdb.h: Make NI_MAXHOST and NI_MAXSERV available when __USE_MISC is defined.
2008-01-16[BZ #5607]Ulrich Drepper
2008-01-16 Ulrich Drepper <drepper@redhat.com> [BZ #5607] * conform/data/fcntl.h-data: Fix posix_fadvise and posix_fallocate prototypes. * conform/data/limits.h-data: Adjust limits changed in v6 and add additional suffixes. * conform/data/mqueue.h-data: Fix typo in mq_curmsgs entry. Add optional functions mq_timedreceive and mq_timedsend. * conform/data/netdb.h-data: Add more AI_* and EAI_* constants. * conform/data/pthread.h-data: Fix prototype of pthread_condattr_setclock. pthread_sigmask is not required in v6. * conform/data/semaphore.h-data: Allow time.h definitions. * conform/data/signal.h-data: Likewise. * conform/data/stdio.h-data: getw and putw are not required in v6. * conform/data/stdlib.h-data: Change setstate prototype. * conform/data/string.h-data: Fix strerror_r prototype. * conform/data/time.h-data: Fix typo in TIMER_ABSTIME definition. * conform/data/unistd.h-data: pthread_atfork not required in v6. Fix readlink prototype. * conform/data/netinet/in.h-data: Add const to in6addr_any and in6addr_loopback. * inet/netinet/in.h: Cleanup namespace. * posix/regex.h: Likewise. * resolv/netdb.h: Likewise. * sysdeps/unix/sysv/linux/bits/in.h: Likewise. * sysdeps/unix/sysv/linux/bits/socket.h: Likewise. * sysdeps/unix/sysv/linux/x86_64/bits/stat.h: Likewise.
2007-11-23[BZ #5375]Ulrich Drepper
* resolv/res_hconf.c (_res_hconf_reorder_addrs): Fix locking when initializing interface list.
2007-10-30* resolv/Versions [libresolv] (GLIBC_PRIVATE): AddUlrich Drepper
_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[BZ #3425]Ulrich Drepper
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.
2007-09-23* resolv/ns_print.c (ns_sprintrrf): Handle ns_t_a6 and ns_t_opt.Ulrich Drepper
Provide better error message in case the type is unknown.
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