glibc.git/include/search.h, branch master

misc: Add twalk_r function

2019-05-02T09:42:51+00:00

The twalk function is very difficult to use in a multi-threaded
program because there is no way to pass external state to the
iterator function.

Reviewed-by: Carlos O'Donell 
Reviewed-by: Adhemerval Zanella

Hide internal __tdestroy function [BZ #18822]

2017-10-01T23:06:58+00:00

Hide internal __tdestroy function to allow direct access within libc.so
and libc.a without using GOT nor PLT.

	[BZ #18822]
	* include/search.h (__tdestroy): Add libc_hidden_proto.
	* misc/tsearch.c (__tdestroy): Add libc_hidden_def.

Fix sem_* tdelete, tfind, tsearch, twalk namespace (bug 18536).

2015-06-17T20:11:58+00:00

The sem_* functions bring in references to tdelete, tfind, tsearch and
twalk.  But the t* functions are XSI-shaded, while sem_* aren't.  This
patch fixes this by using __t* instead, exporting those functions from
libc at version GLIBC_PRIVATE (since sem_* are in libpthread) and
using libc_hidden_* for the benefit of calls within libc.

Tested for x86_64 and x86 (testsuite, and comparison of disassembly of
installed stripped shared libraries).  libpthread gets changes from
PLT reordering; addresses in libc change because of PLT / dynamic
symbol table changes.

	[BZ #18536]
	* misc/tsearch.c (__tsearch): Use libc_hidden_def.
	(__tfind): Likewise.
	(__tdelete): Likewise.
	(__twalk): Likewise.
	* misc/Versions (libc): Add __tdelete, __tfind, __tsearch and
	__twalk to GLIBC_PRIVATE.
	* include/search.h (__tsearch): Use libc_hidden_proto.
	(__tfind): Likewise.
	(__tdelete): Likewise.
	(__twalk): Likewise.
	* nptl/sem_close.c (sem_close): Call __twalk instead of twalk.
	Call __tdelete instead of tdelete.
	* nptl/sem_open.c (check_add_mapping): Call __tfind instead of
	tfind.  Call __tsearch instead of tsearch.
	* sysdeps/sparc/sparc32/sem_open.c (check_add_mapping): Likewise.
	* conform/Makefile (test-xfail-POSIX/semaphore.h/linknamespace):
	Remove variable.
	(test-xfail-POSIX2008/semaphore.h/linknamespace): Likewise.

Fix search.h namespace (bug 17996).

2015-02-18T18:47:34+00:00

The implementation of the (XSI POSIX) functions hsearch / hcreate /
hdestroy uses hsearch_r / hcreate_r / hdestroy_r, which are not POSIX
functions.  This patch makes those into weak aliases for __*_r and
uses those names for the calls within libc.

Tested for x86_64 that the disassembly of installed shared libraries
is unchanged by this patch.

	[BZ #17996]
	* include/search.h (hcreate_r): Don't use libc_hidden_proto.
	(hdestroy_r): Likewise.
	(hsearch_r): Likewise.
	(__hcreate_r): Declare and use libc_hidden_proto.
	(__hdestroy_r): Likewise.
	(__hsearch_r): Likewise.
	* misc/hsearch.c (hsearch): Call __hsearch_r instead of hsearch_r.
	(hcreate): Call __hcreate_r instead of hcreate_r.
	(__hdestroy): Call __hdestroy_r instead of hdestroy_r.
	* misc/hsearch_r.c (hcreate_r): Rename to __hcreate_r and define
	as weak alias of __hcreate_r.
	(hdestroy_r): Rename to __hdestroy_r and define as weak alias of
	__hdestroy_r.
	(hsearch_r): Rename to __hsearch_r and define as weak alias of
	__hsearch_r.
	* conform/Makefile (test-xfail-XPG3/search.h/linknamespace):
	Remove variable.
	(test-xfail-XPG4/search.h/linknamespace): Likewise.
	(test-xfail-UNIX98/search.h/linknamespace): Likewise.
	(test-xfail-XOPEN2K/search.h/linknamespace): Likewise.
	(test-xfail-XOPEN2K8/search.h/linknamespace): Likewise.

First steps to get conformtest fully working

2012-02-26T04:18:39+00:00

Remove pre-ISO C support

2012-01-08T04:57:22+00:00

No more __const.

* include/sys/resource.h: Use libc_hidden_proto for getpriority,

2002-08-04T03:50:21+00:00

	setpriority.
	* sysdeps/unix/sysv/linux/getpriority.c: Add libc_hidden_def.
	* sysdeps/unix/sysv/irix4/getpriority.c: Likewise.
	* sysdeps/mach/hurd/setpriority.c: Likewise.
	* sysdeps/mach/hurd/getpriority.c: Likewise.
	* sysdeps/generic/setpriority.c: Likewise.
	* sysdeps/generic/getpriority.c: Likewise.

	* include/mcheck.h: Use libc_hidden_proto for mcheck_check_all.
	* malloc/mcheck.c: Add libc_hidden_def.

	* include/search.h: Use libc_hidden_proto for hcreate_r, hdestroy_r.
	* misc/hsearch_r.c: Add libc_hidden_def.

	* include/fnmatch.h: Use libc_hidden_proto for fnmatch.
	* posix/fnmatch.c: Add libc_hidden_weak.

* include/search.h: Use libc_hidden_proto for hsearch_r, lfind.

2002-08-04T01:29:29+00:00

	* misc/hsearch_r.c: Add libc_hidden_def.
	* misc/lsearch.c: Likewise.

	* include/ttyent.h: Use libc_hidden_proto for getttyent, setttyent,
	endttyent.
	* misc/getttyent.c: Add libc_hidden_def.

	* include/mcheck.h: Use libc_hidden_proto for mcheck.
	* malloc/mcheck.c: Add libc_hidden_def.

	* include/envz.h: Use libc_hidden_proto for envz_entry, enz_remove.
	* include/argz.h: Use libc_hidden_proto for argz_delete.
	* string/argz-delete.c: Add libc_hidden_def.
	* string/envz.c: Likewise.  Use , not "envz.h".

	* sysdeps/unix/sysv/linux/x86_64/clone.S (thread_start): Use
	HIDDEN_JUMPTARGET for _exit.
	* sysdeps/unix/sysv/linux/m68k/clone.S (thread_start): Likewise.
	* sysdeps/unix/sysv/linux/i386/clone.S (thread_start): Likewise.
	* sysdeps/unix/sysv/linux/powerpc/clone.S: Likewise.
	* sysdeps/unix/_exit.S (_exit): Add libc_hidden_def.

	* include/libc-symbols.h: Fix [__ASSEMBLY__] -> [__ASSEMBLER__].
	[__ASSEMBLER__] (hidden_weak): Define using hidden_def, or to empty.
	[__ASSEMBLER__] (HIDDEN_JUMPTARGET): New macro.
	* sysdeps/unix/sysv/linux/i386/makecontext.S: Use it for exit.

	* include/stdlib.h: Use libc_hidden_proto for abort,
	__strtof_internal, __strtod_internal, __strtold_internal,
	__strtol_internal, __strtoll_internal, __strtoul_internal,
	__strtoull_internal. __strtof_l_internal, __strtod_l_internal,
	__strtold_l_internal, __strtol_l_internal, __strtoll_l_internal,
	__strtoul_l_internal, __strtoull_l_internal.
	* include/wchar.h: Use libc_hidden_proto for __wcstof_internal,
	__wcstod_internal, __wcstold_internal, __wcstol_internal,
	__wcstoll_internal, __wcstoul_internal, ____wcstof_l_internal,
	____wcstod_l_internal, ____wcstold_l_internal, ____wcstol_l_internal,
	____wcstoll_l_internal, ____wcstoul_l_internal, __wcscasecmp_l,
	__wcsncasecmp_l.
	* sysdeps/generic/abort.c: Add libc_hidden_def.
	* stdlib/strtod.c: Likewise.
	* sysdeps/generic/strtol.c: Likewise.
	* sysdeps/wordsize-64/strtol.c: Likewise.
	* sysdeps/wordsize-64/wcstol.c: Likewise.
	* sysdeps/wordsize-64/wcstol_l.c: Likewise.

Update.

1999-11-23T17:31:31+00:00

1999-11-23  Thorsten Kukuk  

	* iconv/skeleton.c: Don't access next_step->fct if datat->is_last
	is true.

1999-11-23  Andreas Jaeger  

	* include/sys/select.h: Remove K&R compatibility.
	* include/sys/statfs.h: Likewise.
	* include/gnu/libc-version.h: Likewise.
	* include/db_185.h: Likewise.
	* include/dlfcn.h: Likewise.
	* include/search.h: Likewise.
	* include/setjmp.h: Likewise.
	* include/signal.h: Likewise.
	* include/stdio.h: Likewise.
	* include/unistd.h: Likewise.

Update.

1998-09-06T23:45:24+00:00

1998-09-06 09:53 -0400  Zack Weinberg  

	* Makeconfig (+gccwarn): Remove -Wno-parentheses.

	* elf/dl-open.c: Quiet -Wparentheses warnings.
	* iconvdata/johab.c: Likewise.
	* iconvdata/uhc.c: Likewise.
	* inet/inet_net.c: Likewise.
	* io/fts.c: Likewise.
	* locale/newlocale.c: Likewise.
	* misc/getttyent.c: Likewise.
	* misc/mntent_r.c: Likewise.
	* misc/ttyslot.c: Likewise.
	* nscd/nscd_conf.c: Likewise.
	* nss/nsswitch.c: Likewise.
	* resolv/gethnamaddr.c: Likewise.
	* resolv/nsap_addr.c: Likewise.
	* resolv/res_debug.c: Likewise.
	* stdio-common/_itoa.c: Likewise.
	* stdlib/strtod.c: Likewise.
	* string/strverscmp.c: Likewise.
	* sunrpc/svc.c: Likewise.
	* sysdeps/libm-ieee754/e_cosh.c: Likewise.
	* sysdeps/libm-ieee754/e_gamma_r.c: Likewise.
	* sysdeps/libm-ieee754/e_sinh.c: Likewise.
	* sysdeps/posix/getaddrinfo.c: Likewise.

	* include/dlfcn.h: Likewise.
	* elf/dlfcn.h: Declare dladdr only for __USE_GNU.
	Define RTLD_DEFAULT.