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There are build 'ifdef L_ns_parse'.
Signed-off-by: Daniel Mack <zonque@gmail.com>
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One uses the other, so add them in one go.
Signed-off-by: Daniel Mack <zonque@gmail.com>
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Signed-off-by: Daniel Mack <zonque@gmail.com>
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These are built '#ifdef L_ns_name'
Signed-off-by: Daniel Mack <zonque@gmail.com>
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This patch introduces a new config directive
'UCLIBC_HAS_RESOLVER_SUPPORT' and adds the new symbols conditionally.
Signed-off-by: Daniel Mack <zonque@gmail.com>
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While reading this file, I found it rather confusing to relate the
"endif" lines to their opening counter-part. This patch adds comments to
most of these lines to denote what the actually do.
Signed-off-by: Daniel Mack <zonque@gmail.com>
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Thanks to Christian Krause <chkr plauener.de> for finding and fixing
this!
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
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in bug 3637 Andrey Kovalev aka pxe.ru writes:
getaddrinfo does NOT add domain to query when receive SERVFAIL
RFC1035 7.2 suggests that
- If a resolver gets a server error or other bizarre response
from a name server, it should remove it from SLIST, and may
wish to schedule an immediate transmission to the next
candidate server address.
So let's try the next server upon SERVFAIL even if it's not strictly
required.
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
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This appears to correspond to what glibc does and this fixes an
issue with iptables-1.4.11 with udp and raw port numbers.
(see http://bugzilla.netfilter.org/show_bug.cgi?id=721)
This fixes #3841
https://bugs.busybox.net/show_bug.cgi?id=3841
Signed-off-by: Natanael Copa <natanael.copa@gmail.com>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
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Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
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.. and add proper prototype, move it into it's own obj and other such
cleanups.
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
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Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
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Also, freeaddrinfo(NULL) is ok, no need to check parameted for NULL
before calling it.
Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
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Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
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fixes PR2227
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
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Fix goof in previous commit.
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
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Timo Teräs writes:
The memory release loop is missing an obvious counter increment.
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
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Fix spurious fall-through.
Signed-off-by: Mark Salter <msalter@redhat.com>
Signed-off-by: Bernd Schmidt <bernds@codesourcery.com>
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Remove __libc_ffs*, unneeded
Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
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This imports and adapts ffsll.c from glibc. The same mechanism as in glibc
is used to choose between ffs and ffsll to implement ffsl. The single user
in libc is changed to use the hidden version __libc_ffs.
Signed-off-by: Bernd Schmidt <bernds@codesourcery.com>
Acked-by: Bernhard Reutner-Fischer <aldot@uclibc.org>
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disable IPv6 related stuff if feature is disabled.
Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
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Signed-off-by: Khem Raj <raj.khem@gmail.com>
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Patch attached:
Fix a bug in offset calculations when parsing /etc/hosts in resolv.c.
Formerly a miscalculation meant that having found the correct line, the code
was trashing its own result data.
Signed-off-by: Philip Nye <philipn@engarts.com>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
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We increase line buffer size, reduce MAXALIASES and make sure we don't
segfault when there are too manuy aliases in /etc/protocols.
Signed-off-by: Natanael Copa <natanael.copa@gmail.com>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
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Reduce MAXALIASES to something lower. There will probably never be
need for more than 1 alias but we allow a few extra.
While here we alos fix segfault when there are too many aliases.
Signed-off-by: Natanael Copa <natanael.copa@gmail.com>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
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Don't try to be smart by dynamically realloc buffersize as it doesn't
work. Instead, be simple and allocate a buffer big enough.
This fixes a memory leak when calling getserv{ent,byname,byport}
multiple times.
To save memory we reduce number of max aliases. We seldomly will need
more than 1 anyways. While here, fix segfault that happened if there
were too many aliases.
Signed-off-by: Natanael Copa <natanael.copa@gmail.com>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
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This fixes issue introduced by 72e1a1ce186c39f07282398e2af9eb0253e60f15
This should also fix the following testcase to exit with error rather
than cause an endless loop.
int main(void) {
if (getservbyname("non-existing", "udp") == NULL)
err(1, "getservbyname");
return 0;
}
Reported by Pirmin Walthert
http://lists.uclibc.org/pipermail/uclibc/2010-August/044277.html
Signed-off-by: Natanael Copa <natanael.copa@gmail.com>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
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For those archs that provide non multiplexed socket calls
it possible to implement the lib C wrappers without calling the
multi-purpose __socketcall. For a subset of these functions that
are cancellation point, it needs to correctly handle cancellation.
Signed-off-by: Francesco Rundo <francesco.rundo@st.com>
Signed-off-by: Carmelo Amoroso <carmelo.amoroso@st.com>
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The combination of
commit aab4df0fb51660300559f5f29290709db2f7bfee
resolv.c: add support for per thread res_state
commit cca45baf8353d1e338d232f5bdb2d1d6b357f1da
/etc/resolv.conf: support "timeout:n" and "attempts:n" options
.. and NPTL results in broken resolver in very annoying ways.
Now, it seems that most of the uclibc code does not work well
if res_state is TLS variable. Technically, this is the correct thing
to do since this gives proper per-thread resolving behavior, and
it also makes the config options overridable per thread. This
probably what apps expect as glibc does it too.
But alas, most places use _res to sync up static global variables
which results in breakage. It gets more or less randomly selected
which threads options get applied. Also in case of multiple servers
it looks like the retry logic is shared between all threads, e.g.
two concurrent resolutions can make other resolvers skip nameservers
due to shared "last_ns_num".
And finally the timeout/attempts commit breaks the accumulated stuff
horribly. What happens is:
1. multithreaded application startups, initializes resolver,
resolves things just fine
2. resolv.conf gets changed, application calls res_init
after res_init uclibc will call res_sync on all resolver functions
to refresh globals from the TLS variable _res
3. res_init was called only in one thread, so other thread's
_res contains all zeroes (yes, this is correct app usage:
res_init should be called only from one thread)
4. threads not calling res_init get broken resolver due to timeout
being set to zero
Now, one proper solution would be to:
1. make __open_nameservers return the configuration options
2. pass the config options struct to res_sync_func so it can do
the proper overrides from per-thread _res
3. remove the related globals and use locally config options from
__open_nameservers
But technically, the correct thing (as in glibc does this) is:
- res_init increases global "res_init timestamp"
- use _res (or pointer within there) for resolver retries etc.
get proper per-thread behavior
- resolvers functions call "maybe_init" which reinitialize the
TLS'ed resolver state (e.g. reload resolv.conf) if their res_init
timestamp is out dated
As an immediate emergency kludge fix, the following might do:
resolv: fix options handling for TLS _res
If _res is in TLS (NPTL), it might not get initialized. Assume
zeroes mean default values.
Signed-off-by: Timo Teräs <timo.teras@iki.fi>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
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e.g. getservbyname()
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
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Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
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Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
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Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
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Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
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If there is a problem communicating with a nameserver the __dns_lookup()
function will not immediately advance to the next nameserver but instead
continue waiting until the timeout expires. This will cause a 30 second
delay even if no nameserver is configured in resolv.conf and no DNS is
running on localhost.
Signed-off-by: Ingo van Lil <inguin@gmx.de>
Acked-by: Roman I Khimov <khimov@altell.ru>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
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The rpc rcmd code has some ugly ifdef mazes to handle mmu/nommu differences
just to select alloca or malloc. Unify those with some helper macros in a
new header, and then convert the rcmd code over to it.
This is all geared towards fixing the getdents helper functions which only
use alloca() atm. Now that we have helper functions, convert the getdents
functions over too.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Reviewed-by: Steven J. Magnani <steve@digidescorp.com>
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Fixes resolution of names with AAAA entries and gethostbyaddr issues.
Signed-off-by: Timo Teras <timo.teras@iki.fi>
Signed-off-by: Austin Foxley <austinf@cetoncorp.com>
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Signed-off-by: Austin Foxley <austinf@cetoncorp.com>
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Signed-off-by: Carmelo Amoroso <carmelo.amoroso@st.com>
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Conflicts:
libc/unistd/confstr.c
Signed-off-by: Austin Foxley <austinf@cetoncorp.com>
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See "Possible regression from timeout commit for resolv.conf" thread.
Also remove superfluous NULL check.
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Conflicts:
libc/misc/utmp/utent.c
libc/sysdeps/linux/i386/bits/syscalls.h
Signed-off-by: Austin Foxley <austinf@cetoncorp.com>
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If the type of the first answer does not match with the requested type,
then the dotted name was freed. If there are no further answers in
the DNS reply, this pointer was used later on in the same function.
Additionally it is passed to the caller, and caused strange
behaviour.
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
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Conflicts:
Makefile.in
extra/Configs/Config.in
libc/sysdeps/linux/common/bits/kernel-features.h
libc/sysdeps/linux/common/poll.c
libc/sysdeps/linux/common/sysdep.h
libc/sysdeps/linux/sh/sysdep.h
Signed-off-by: Austin Foxley <austinf@cetoncorp.com>
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Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
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Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
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Signed-off-by: Austin Foxley <austinf@cetoncorp.com>
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text data bss dec hex filename
- 1745 2 4 1751 6d7 libc/inet/dnslookup.o
+ 1760 2 4 1766 6e6 libc/inet/dnslookup.o
- 962 0 4 966 3c6 libc/inet/opennameservers.o
+ 1099 0 4 1103 44f libc/inet/opennameservers.o
- 462 4 472 938 3aa libc/inet/res_init.o
+ 454 4 468 926 39e libc/inet/res_init.o
- 870 0 0 870 366 libc/inet/res_query.o
+ 867 0 0 867 363 libc/inet/res_query.o
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Conflicts:
libc/stdlib/Makefile.in
Signed-off-by: Khem Raj <raj.khem@gmail.com>
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