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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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Thanks to Peter S. Mazinger for pointing out this (obvious) error.
The __ASSUME_NETLINK from ricardw's r22531 references a non-existing
variable in certain cases. I don't see how that could possibly work..
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Closes #5544
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Closes issue #5194
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it conditionally included among the installed header files depending on
UCLIBC_HAS_AI_ADDRCONFIG.
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instead of modifying the contents of two bools.
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need the file outside of uClibc anyway.
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Take __UCLIBC_HAS_IPV4__ into account.
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getaddrinfo(3).
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Some of the code is functionally identical before and after, but for now
I'm just mechanically reverting the entire mess.
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For now, a straight revert; we can decide later wheter we want to do something
more.
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__uc_malloc calls in getnetent.c, so we must retain the include and
libc_hidden_proto).
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definition. I seems to produce spurious warning:
libc/inet/resolv.c:1549: warning: 'visibility' attribute ignored on non-class types
(seems like gcc bug)
and it is not really needed - attribute_hidden was already
specified in function _declaration_ so it is not necessary here.
No code changes (verified with objdump).
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text data bss dec hex filename
- 230 0 9 239 ef libc/inet/gethostent.o
+ 224 0 9 233 e9 libc/inet/gethostent.o
- 782 0 0 782 30e libc/inet/read_etc_hosts_r.o
+ 767 0 0 767 2ff libc/inet/read_etc_hosts_r.o
Run tested.
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we were closing a FILE, but did not record that fact by setting
a variable to NULL, and then we used it for reading!
While at it, small reduction in bss.
Run tested.
text data bss dec hex filename
- 210 0 12 222 de libc/inet/gethostent.o
+ 230 0 9 239 ef libc/inet/gethostent.o
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The obsolete functions bcopy, index, etc. are not supposed to be used within
uClibc itself. Hence, there is no libc_hidden_def for them, but the previous
patch did not just move libc_hidden_protos, it also added new ones for the
legacy functions. As a result, programs which use these functions can no
longer link with uClibc.
This fixes it by removing the unnecessary libc_hidden_protos. I've also
removed all inclusions of <strings.h> from uClibc source files: since we
define _GNU_SOURCE, it is sufficient to include <string.h>. We then do not
need to duplicate the libc_hidden_proto block in <strings.h>.
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1. names with two consecutive dots are not valid
2. if name ends with a dot, dont try appending search domain(s)
alos a few small optimisations are here.
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like
o UCLIBC_HAS_GNU_ERROR
o UCLIBC_HAS_BSD_ERR
o UCLIBC_HAS_PTY
o UCLIBC_HAS_GETPT (1)
o UCLIBC_SYSCALL_STUBS
o UCLIBC_SYSCALL_STUB_WARNING
o UCLIBC_LINUX_SPECIFIC (2)
o UCLIBC_BSD_SPECIFIC (3)
o UCLIBC_NTP_LEGACY (4)
o UCLIBC_SV4_DEPRECATED (5)
o UCLIBC_HAVE_REALTIME (6)
o UCLIBC_HAVE_ADVANCED_REALTIME (7)
o UCLIBC_HAVE_EPOLL (8)
o UCLIBC_HAVE_XATTR (9)
o UCLIBC_HAVE_PROFILING (10)
(1) make non-standard getpt optional and implement standard posix_openpt
(2) fstatfs(), inotify_*(), ioperm(), iopl(), madvise(), modify_ldt(),
personality()
ppoll(), setresuid()
(3) mincore(), getdomainname(), setdomainname()
(4) ntp_adjtime(), ntp_gettime() aliases
(5) ustat() [use statfs(2) in your code instead]
(6) All marked as "(REALTIME)" in SUSv3
(7) All marked as "(ADVANCED REALTIME)" in SUSv3
(8) epoll_create(), epoll_ctl(), epoll_wait()
(9) all Extended Attributes
(10) helpers for gcc's -finstrument-functions
- Fixes _dl_exit()
- Implements sleep(3) for !UCLIBC_HAVE_REALTIME
- Implements usleep(3) for !UCLIBC_HAVE_REALTIME
- adds #warning about incorrect posix_fadvise{,64}()
- removes unused and unwanted uselib()
Net outcome is that an allnoconfig with HAVE_SHARED is now about 88k instead
of formerly 130k.
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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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