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IPv6 DNS resolv. rfc4159 mandated this 3 years ago. Closes bug 1020.
Also cleans up some stype inconsistensied and saves 2 bytes of rw data.
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remove a few duplicate includes of unistd.h
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by adding <unistd.h> header file.
Signed-off-by: Carmelo Amoroso <carmelo.amoroso@st.com>
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- 288016 1924 7176 297116 4889c libuClibc-0.9.29.so
+ 287956 1924 7168 297048 48858 libuClibc-0.9.29.so
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- 79 0 28 107 6b libc/inet/rpc/create_xid.o
+ 76 0 25 101 65 libc/inet/rpc/create_xid.o
- 126 0 4 130 82 libc/misc/assert/__assert.o
+ 123 0 1 124 7c libc/misc/assert/__assert.o
- 648 4 24 676 2a4 libc/misc/internals/__uClibc_main.o
+ 645 4 21 670 29e libc/misc/internals/__uClibc_main.o
- 230 0 4 234 ea libc/stdlib/abort.o
+ 216 0 1 217 d9 libc/stdlib/abort.o
- 129 0 4 133 85 libc/termios/tcgetsid.o
+ 126 0 1 127 7f libc/termios/tcgetsid.o
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in string.h and strings.h. This caught unguarded string ops in
libc/inet/ethers.c __ether_line_w() function.
I will wait for fallout reports for a week or so,
then continue converting more libc_hidden_proto's.
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The only code change observed is actually a case
where we were not doing that as needed:
00000000 <__GI_tzset>:
-53 push %ebx
-e8 00 00 00 00 call 6 <__GI_tzset+0x6>
-5b pop %ebx
-81 c3 03 00 00 00 add $0x3,%ebx
- R_386_GOTPC _GLOBAL_OFFSET_TABLE_
6a 00 push $0x0
-e8 fc ff ff ff call 10 <__GI_tzset+0x10>
- R_386_PLT32 time
+e8 fc ff ff ff call 3 <__GI_tzset+0x3>
+ R_386_PC32 __GI_time
3d ff 4e 98 45 cmp $0x45984eff,%eax
0f 9e c0 setle %al
0f b6 c0 movzbl %al,%eax
50 push %eax
-e8 fc ff ff ff call 21 <__GI_tzset+0x21>
+e8 fc ff ff ff call 14 <__GI_tzset+0x14>
R_386_PC32 _time_tzset
58 pop %eax
5a pop %edx
-5b pop %ebx
c3 ret
No mass migration of libc_hidden_proto(foo) planned.
Lets wait for potential fallout first.
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and add it to arpa/inet.h header.
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and marked with libc_hidden_proto/def(),
or not be exported in .h files
and be hidden (or even static if possible).
We have five functions which violate this. Fixing:
netdb.h: export ruserpass()
rpc/rpc.h: export xdr_accepted_reply() and xdr_rejected_reply()
make inet_ntoa_r static function (it is not exported in any .h file)
make _time_tzset hidden function (it is not exported in any .h file)
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Added related test cases.
Signed-off-by: Matthew Wilcox <matthew@wil.cx>
Hacked-by: Carmelo Amoroso <carmelo.amoroso@st.com>
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The following definitions in getaddrinfo.c seem redundant as they _are_
defined in the public netdb.h header, contrary to the comment. AI_DEFAULT
is not, however it is not used in the file either so can be safely
removed.
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(patch by Bernd Schmidt <bernds_cb1 at t-online.de>)
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when AI_NUMERICSERV flag set.
Signed-off-by: Filippo Arcidiacono <filippo.arcidiacono@st.com>
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__dns_lookup(). This avoids segmentation faults when more than 1024
file descriptors are used by an application.
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MontaVista noticed that when their kernels were configured to trap on unaligned
access gethostbyname_r could mysteriously crash. I tracked this down to an
unaligned buffer being passed to gethostbyname_r from some other part of uClibc
(afraid I don't remember where from any more). We have to pad the beginning of
the buffer to a pointer alignment before we store pointers in it.
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IPv6 entries in /etc/hosts. Previous only the first of these host would work,
as uClibc would read the /etc/hosts file from top to bottom, failing if the
first hit did not match the IP type.
Now uClibc will continue reading, even if the first correct entry name, but wrong IP
type fails. Thus, allowing a second correct entry name with correct IP type
will result in a name resolve.
Signed-off-by: Hans-Christian Egtvedt <hcegtvedt@atmel.com>
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suggested by Natanael Copa
harvested from: http://www.freebsd.org/cgi/query-pr.cgi?pr=kern/92880
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replace "buf = malloc(BUFSIZ); if (!buf) abort();" by __uc_malloc
elsewhere.
With last 7 patches together uclibc has 3k of static data total
with fairly big .config and with 2k being used for 2 x BUFSIZ stdio buffer:
text data bss dec hex filename
114 132 2048 2294 8f6 _stdio.o (ex lib/libc.a)
total data 593
total bss 3062
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(without which busybox ping segfaults on error). Broken during locking
changes in in svn 16801.
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disable strict-aliasing until someone gets the balls to clean this stuff up
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I have successfully made gethostbyname_r(), res_init(), and gethostid() fully
reentrant. In addition, I have added a NULL check to inet_aton(). This is
where SEG FAULTs were coming from when gethostbyname_r() was called.
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Hi Erik,
Thanks for all your great work. I found a set of bugs in
resolv.c . Basically, there is code that looks like:
BIGLOCK;
__nameserversXX=__nameservers;
__nameserverXX=__nameserver;
BIGUNLOCK;
i = __dns_lookup(dname, type, __nameserversXX, __nameserverXX, &packet, &a);
which is a problem because the declarations are
int __nameservers;
char * __nameserver[MAX_SERVERS];
int __searchdomains;
char * __searchdomain[MAX_SEARCH];
so you can see that __nameserver is a pointer. Copying the
pointer to __nameserverXX doesn't protect the global variable
space. I have attached a patch and the new file. I hope you
will incorporate these bug fixes. I spent quite a bit of time
tracking them down.
Many thanks,
Ron
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gethostbyname2_r tries to resolve an ipv6 address from /etc/hosts using
get_hosts_byname_r, but with AF_INET instead of the supplied address family.
This returns ipv4 addresses marked as ipv6 ones. Fix from nbd.
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things, and avoid potential deadlocks caused when a thread holding a uClibc
internal lock get canceled and terminates without releasing the lock. This
change also provides a single place, bits/uClibc_mutex.h, for thread libraries
to modify to change all instances of internal locking.
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things, and avoid potential deadlocks caused when a thread holding a uClibc
internal lock get canceled and terminates without releasing the lock. This
change also provides a single place, bits/uClibc_mutex.h, for thread libraries
to modify to change all instances of internal locking.
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otherwise we get messed up alias memory and this simple test case will
segfault:
python -c 'import socket; print socket.gethostbyaddr("80.68.88.204")[2];'
see bug report in blackfin tracker for more info:
http://blackfin.uclinux.org/tracker/index.php?func=detail&aid=1503&group_id=17&atid=141
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I had clearly run search/replace on that were cluttering things up.
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