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Collapse __length_dotted into __length_question (the sole user of it).
Make __length_question and __decode_answer static, they are used only once
by only one function.
Delete __decode_question, it is unused.
All in all, four less .o files in libc.a.
Document what __dns_lookup returns (length of the packet).
Propagate packet len into __decode_answer, __length_question, __decode_dotted
and check that we do not use data past the end of the packet.
Rename some variables/parameters to better names (len -> packet_len,
data -> packet etc).
Add mini-doc how DNS packets look like.
Style cleanup.
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res_query: do not unconditionally set h_errno to TRY_AGAIN (closes bug 173).
cleanups: s/__dn_expand/dn_expand/, remove superfluous dn_expand declaration,
remove libc_hidden_proto junk
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Now they are only enabled if linuxthreads.old are selected.
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- add note about "/etc/config/" and the resolver code per se.
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as in /etc/ethers (man 5 ethers)
Assume that any of socket- or IP support indicate that need.
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libc/inet/ether_addr.c: optimize tolower, we ever use it on 0-9a-f
libc/inet/ntop.c: optimize tolower, we ever use it on 0-9a-f
with locale support on, code size change is:
text data bss dec hex filename
- 396 0 24 420 1a4 libc/inet/ether_addr.os
+ 306 0 24 330 14a libc/inet/ether_addr.os
- 1453 0 0 1453 5ad libc/inet/ntop.os
+ 1430 0 0 1430 596 libc/inet/ntop.os
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text data bss dec hex filename
- 1237 9 28 1274 4fa libc/inet/rpc/getrpcent.os
+ 1246 0 28 1274 4fa libc/inet/rpc/getrpcent.os
- 773 24 0 797 31d libc/misc/time/_time_localtime_tzi.os
+ 772 16 0 788 314 libc/misc/time/_time_localtime_tzi.os
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test/regex/tst-regex2.c: fix testcase to compile with just "gcc <file>.c"
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__libc_accept __libc_close __libc_connect __libc_creat __libc_creat64
__libc_fsync __libc_lseek __libc_lseek64 __libc_msync __libc_nanosleep
__libc_open __libc_open64 __libc_pause __libc_read __libc_readv
__libc_recv __libc_recvfrom __libc_recvmsg
__libc_send __libc_sendmsg __libc_sendto
__libc_tcdrain __libc_wait __libc_waitpid __libc_write __libc_writev
They were removed from glibc 1 May 2004:
http://sources.redhat.com/ml/libc-hacker/2004-05/msg00001.html
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ifaddrs.c: cosmetics, no code changes
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remove one superfluous statement.
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if 256+ seconds passed since last read;
fix cases where we switch to next search domain instead of switching
to new server
optimize ip4/ip6 combined cases;
rewrite for(;;) loops so that it's clearer what's going on;
document buffer usage;
add TODOs and FIXMEs (for one, gethostbyname2 does not fill
->h_aliases field in the result AT ALL, and is iffy in general)
text data bss dec hex filename
- 245898 1403 11904 259205 3f485 libuClibc-0.9.30-svn.so
+ 245785 1403 11904 259092 3f414 libuClibc-0.9.30-svn.so
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*: remove checks of sigaction and sigprocmask results
in cases where they clearly can't fail:
sigaction(known_good_sig)
sigprocmask(known_good_how)
text data bss dec hex filename
- 393 4 0 397 18d libc/pwd_grp/lckpwdf.o
+ 382 4 0 386 182 libc/pwd_grp/lckpwdf.o
- 56 0 0 56 38 libc/signal/sigblock.o
+ 44 0 0 44 2c libc/signal/sigblock.o
- 211 0 0 211 d3 libc/signal/sigset.o
+ 202 0 0 202 ca libc/signal/sigset.o
- 56 0 0 56 38 libc/signal/sigsetmask.o
+ 44 0 0 44 2c libc/signal/sigsetmask.o
- 309 0 0 309 135 libc/unistd/sleep.o
+ 256 0 0 256 100 libc/unistd/sleep.o
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text+data text+rodata rwdata bss filename
- 2534 2510 24 0 libc/inet/rpc/clnt_udp.o
+ 2534 2534 0 0 libc/inet/rpc/clnt_udp.o
- 1904 1880 24 0 libc/inet/rpc/clnt_tcp.o
+ 1904 1904 0 0 libc/inet/rpc/clnt_tcp.o
- 770 746 24 4 libc/inet/rpc/clnt_raw.o
+ 770 770 0 4 libc/inet/rpc/clnt_raw.o
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text+data text+rodata rwdata bss filename
- 2308 2284 24 24 libc/inet/rpc/clnt_unix.o
+ 2308 2308 0 0 libc/inet/rpc/clnt_unix.o
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text data bss dec hex filename
- 130 156 0 286 11e libc/stdlib/random.o
+ 130 148 0 278 116 libc/stdlib/random.o
- 586 0 0 586 24a libc/stdlib/random_r.o
+ 570 0 0 570 23a libc/stdlib/random_r.o
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text data bss dec hex filename
- 45 0 480 525 20d libc/inet/gethostbyname.o
+ 18 0 0 18 12 libc/inet/gethostbyname.o
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otherwise use xdrrec_{get,put}int32 + trivial transform.
eliminate warnings.
des: small shrink + eliminate a warning
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Appears to build fine (several .configs tried)
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delete some duplication in constants.
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delete two stray files which compile to nothing
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almost no code changes
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in _res structure. Used by busybox's nslookup.
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add largish comment explaining what we are doing, and why;
fixes to make IPv6-only resolver possible
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in __dns_lookup.
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configurable. we don't use most of it anyway.
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in one of recent commits :)
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text data bss dec hex filename
- 1545 2 4 1551 60f libc/inet/dnslookup.o
+ 1528 2 4 1534 5fe libc/inet/dnslookup.o
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do not treat negative response as error
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"gethostbyname() fails if DNS server returns more than 23 addresses"
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No logic changes. Code size is the same too.
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text data bss dec hex filename
- 259 0 0 259 103 libc/inet/herror.o
+ 243 0 0 243 f3 libc/inet/herror.o
- 720 0 0 720 2d0 libc/inet/ns_name.o
+ 710 0 0 710 2c6 libc/inet/ns_name.o
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the code it was never used in any useful way.
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/etc/hosts and it has IPv4 address there.
The most common example is "127.0.0.1 localhost".
We don't want "ping localhost" to stall and time out on IPv6
queries to, say, inaccessible DNS server, right?
- 655 0 0 655 28f libc/inet/gethostbyname2_r.o
+ 685 0 0 685 2ad libc/inet/gethostbyname2_r.o
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avoid using zero-filled constants in bss:
text data bss dec hex filename
3182 24 48 3254 cb6 getaddrinfo_old.o
3280 0 0 3280 cd0 getaddrinfo.o
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