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b1ccfc061f
The symbol was deprecated by strsignal and its usage imposes issues such as copy relocations. Its internal name is changed to __sys_siglist and __sys_sigabbrev to avoid static linking usage. The compat code is also refactored, since both Linux and Hurd usage the same strategy: export the same array with different object sizes. The libSegfault change avoids calling strsignal on the SIGFAULT signal handler (the current usage is already sketchy, adding a call that potentially issue locale internal function is even sketchier). Checked on x86_64-linux-gnu and i686-linux-gnu. I also run a check-abi on all affected platforms. Reviewed-by: Carlos O'Donell <carlos@redhat.com>
48 lines
2.0 KiB
C
48 lines
2.0 KiB
C
/* Generic siglist compatibility macro definitions.
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Copyright (C) 2020 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, see
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<https://www.gnu.org/licenses/>. */
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#ifndef _SIGLIST_COMPAT_H
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#define _SIGLIST_COMPAT_H
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#include <shlib-compat.h>
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#include <limits.h>
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/* Define new compat symbols for sys_siglist, _sys_siglist, and sys_sigabbrev
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for version VERSION with NUMBERSIG times the number of bytes per long int.
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Both _sys_siglist and sys_siglist alias to __sys_siglist while
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sys_sigabbrev alias to __sys_sigabbrev. Both target alias are
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define in siglist.c. */
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#define DEFINE_COMPAT_SIGLIST(NUMBERSIG, VERSION) \
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declare_symbol_alias (__ ## VERSION ## _sys_siglist, \
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__sys_siglist, \
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object, NUMBERSIG * (ULONG_WIDTH / UCHAR_WIDTH)); \
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declare_symbol_alias (__ ## VERSION ## sys_siglist, \
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__sys_siglist, \
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object, NUMBERSIG * (ULONG_WIDTH / UCHAR_WIDTH)); \
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declare_symbol_alias (__ ## VERSION ## _sys_sigabbrev, \
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__sys_sigabbrev, \
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object, NUMBERSIG * (ULONG_WIDTH / UCHAR_WIDTH)); \
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compat_symbol (libc, __## VERSION ## _sys_siglist, _sys_siglist, \
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VERSION); \
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compat_symbol (libc, __## VERSION ## sys_siglist, sys_siglist, \
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VERSION); \
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compat_symbol (libc, __## VERSION ## _sys_sigabbrev, sys_sigabbrev, \
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VERSION); \
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#endif
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