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d8b8842b04
[HAVE_ELF && SHARED && DO_VERSIONING] (errno, _errno): Declare these
with compat_symbol so they are not link-time visible.
[! USE___THREAD] (__libc_errno): New alias for errno.
* csu/Versions [!(USE_TLS && HAVE___THREAD)] (libc: GLIBC_PRIVATE):
Add __libc_errno here.
* inet/herrno.c [USE___THREAD]: Use this conditional
in place of [USE_TLS && HAVE___THREAD].
[! USE___THREAD] [HAVE_ELF && SHARED && DO_VERSIONING]
(h_errno, _h_errno): Declare these with compat_symbol so they are not
link-time visible.
[! USE___THREAD] (__libc_h_errno): New alias for h_errno.
* resolv/res_libc.c [! USE___THREAD]
[HAVE_ELF && SHARED && DO_VERSIONING] (_res): Likewise.
(_res): Use __attribute__ ((section (".bss"))) so we can have an alias.
(__libc_res): Define as alias for _res.
* resolv/Versions [!(USE_TLS && HAVE___THREAD)] (libc: GLIBC_PRIVATE):
Add __libc_h_errno and __libc_res here.
2002-11-14 Jakub Jelinek <jakub@redhat.com>
* csu/Versions (errno): Move STT_TLS symbol to GLIBC_PRIVATE for now.
* resolv/Versions (h_errno, _res): Likewise.
2002-11-14 Roland McGrath <roland@redhat.com>
56 lines
1.8 KiB
C
56 lines
1.8 KiB
C
/* Copyright (C) 1996,97,98,2002 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include <features.h>
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#include <netdb.h>
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#undef h_errno
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#include <tls.h>
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/* We need to have the error status variable of the resolver
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accessible in the libc. */
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#if USE___THREAD
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__thread int h_errno;
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extern __thread int __libc_h_errno __attribute__ ((alias ("h_errno")))
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attribute_hidden;
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# define h_errno __libc_h_errno
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#else
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int h_errno = 0;
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weak_alias (h_errno, _h_errno)
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/* This alias is needed by libpthread. */
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strong_alias (h_errno, __libc_h_errno)
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/* We declare these with compat_symbol so that they are not
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visible at link time. Programs must use the accessor functions. */
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# if defined HAVE_ELF && defined SHARED && defined DO_VERSIONING
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# include <shlib-compat.h>
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compat_symbol (libc, h_errno, h_errno, GLIBC_2_0);
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compat_symbol (libc, _h_errno, _h_errno, GLIBC_2_0);
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# endif
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#endif
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/* When threaded, h_errno may be a per-thread variable. */
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int *
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weak_const_function
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__h_errno_location (void)
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{
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return &h_errno;
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}
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