| Commit message (Collapse) | Author | Age | Files | Lines |
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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.
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When the DNS server doesn't reply at all we possibly tested
an unitialized variable.
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When doing IPv4+6 lookups we have to pass up the error record from
send_dg.
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In EDNS0 records the maximum result size is transmitted in a 16
bit value. Large buffer sizes were handled incorrectly by using
only the low 16 bits. Fix this by limiting the size to 0xffff.
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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.
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This change prevents repetition in most later calls of the resolver
in case the DNS server or the network connection is broken.
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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.
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reply in single-request mode.
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mode if we already are in it.
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size. Remove duplicated test. Don't handle mmap'ed blocks here.
Adjust all callers.
* malloc/hooks.c (realloc_check): Adjust _int_realloc call.
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instead of __strcasecmp.
* resolv/nss_dns/dns-host.c (getanswer_r): Likewise.
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* 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.
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* 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.
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* grp/compat-initgroups.c (compat_call): Switch to use malloc when
the input line is too long.
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adjust the buffer alignment.
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use.
* sysdeps/unix/sysv/linux/kernel-features.h: Fix typo in accept4
handling.
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after reading name server list.
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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.
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information at the correct index.
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flag already set.
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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.
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