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Bug fix: gethostbyname_r checked errno without first setting it to a
known value.
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Hi Erik
I have corrected a bug in uClibc/libc/inet/resolv.c in function
__dns_lookup(). Have attaced a txt file with my diffs regarding to
uClibc 0.9.26.
If two nameservers are included in /etc/resolv.conf and the first one is
wrong and the secondary is correct the algorithm never
looked up the secondary one. Please review my diff and feel free to
submit the patch onto your CVS.
If reading manual page resolv.conf(5) under nameserver and how the
algorithm should work the previous dns_lookup did not fully followed
that.
Regards
Imre Sunyi
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but remove support for host aliases (the HOSTALIASES env variable)
which looks like a very bad idea.
-Erik
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were including libc-lock.h which had a bunch of weak pragmas. Also,
uClibc supplied a number of no-op weak thread functions even though
many weren't needed. This combined result was that sometimes the
functional versions of thread functions in pthread would not override
the weaks in libc.
While fixing this, I also prepended double-underscore to all necessary
weak thread funcs in uClibc, and removed all unused weaks.
I did a test build, but haven't tested this since these changes are
a backport from my working tree. I did test the changes there and
no longer need to explicitly add -lpthread in the perl build for
perl to pass its thread self tests.
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cause gethostbyaddr_r to keep looping allocating more and more
memory each time till alloca finally caused a segfault. Ugh.
This fixes that as well...
-Erik
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I've created a patch for adding dn_expand() to uClibc 0.9.21.
dn_expand() is used by at least ipsec-tools and also openldap I think.
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with getaddrinfo().
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With glibc if you do a res_init() that forces a reread of the nameservers file,
but in uClibc the res_init will not force a reread if it has already read the
file because then the nameservers value is greater than 0.
So res_init must call close_nameservers() before calling open_nameservers().
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__decode_dotted() does not count the null terminating byte of
a hostname in the DNS response. This causes lookups to fail
if the DNS response doesn't compress domain names in the
message.
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things to the lower 16 bits of 'id'.
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compile ("worst standard ever!")
-Erik
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allocation accordingly. This fixes the segfault in the Python 2.2.1
socket test.
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-Erik
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lock while sending packets out onto the wire.
-Erik
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-Erik
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indicate it is (alledgedly) private.
-Erik
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connect_dns() and simplify IPV6 support by reducing the number of
ifdefs sprinkled about.
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when adding some locking code.
-Erik
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-Erik
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support for struct _res. This is a minimalist implementation,
but should work for most anything out there.
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gethostbyname("192.168.0.1"), which should work even when the /etc/hosts and
/etc/config/hosts files do not exist.
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use of alarm() and therefore SIGARLM in the resolver and to
instead use select, which is much cleaner.
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missing pieces of the conversion to reentrant functions.
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added several additional reentrant networking functions such that iptables now
runs with IPV6 support.
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local copy of the FILE pointer, thereby causing /etc/hosts lookups
to fail with Resolver errors. This patch from Thomas fixes the
problem.
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-Erik
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- fixes endianness bug in gethostbyaddr() (i386 worked fine, while m68k
didn't: 192.168.160.162 was queried with 192.168.160.162.in-addr.arpa
while it should have been 162.160.168.192.ip-addr.arpa)
- contains missing pieces from my previous getnameinfo() patch:
now it actually compiles!
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support for __FORCE_NOGLIBC per Brian Stafford
<brian.stafford@office-logic.com>
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I found some support in uClibc for IPv6 but I needed some more...
Enclosed
is the patch containing following modifications:
- getnameinfo port from lates glibc
- IPv6 support for gethostbyaddr()
- IPv6 support for get_hosts_byname and read_etc_hosts (among other
things this fixed a bug in gethostbyname2 in a case when user asked for
an IPv6 but got a v4 address if it was present in /etc/hosts)
- defined ip6addr_any and in6addr_loopback (though the place where I
defined these isn't correct, I guess)
What is still missing:
- getaddrinfo (this could be ported also from glibc but it won't be as
easy as porting getnameinfo, I guess)
I have tested the patch using enclosed test program and boa web server.
Seems to work ;)
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in dns_lookup.
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partial IPV6 support. This adds things like gethostbyname2().
Off by defaut, of course,
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Added support for multiple nameserver lines, still supports multiple
servers on a on single line.
Added "domain" entry. domain and search are mutually exclusive and
override each other (the last one wins, see the resolver(5) man page).
Added dummy "getnetbyname" that returns fail.
Added "res_init" and "res_query".
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address. Secondly, when doing reverse dns lookups, it was appending the
domain, even if a domain was already attached.
-Erik
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Also fixes 2 very important malloc bugs! Anyone using malloc (esp mmu-less)
should update and recompile.
-Erik
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Fix a bug in getdelim -- patch from David Whedon <dwhedon@gordian.com>.
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