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| author | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2020-04-24 11:09:00 -0300 |
|---|---|---|
| committer | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2020-07-07 14:10:58 -0300 |
| commit | b1ccfc061feee9ce616444ded8e1cd5acf9fa97f (patch) | |
| tree | fc6cf960f68245bcbf045df47955c253a94504d8 /sysdeps/generic | |
| parent | e4e11b1dba261cb650e631978622bf3b4a4d8c37 (diff) | |
| download | glibc-b1ccfc061feee9ce616444ded8e1cd5acf9fa97f.zip glibc-b1ccfc061feee9ce616444ded8e1cd5acf9fa97f.tar.gz glibc-b1ccfc061feee9ce616444ded8e1cd5acf9fa97f.tar.bz2 | |
signal: Move sys_siglist to a compat symbol
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>
Diffstat (limited to 'sysdeps/generic')
| -rw-r--r-- | sysdeps/generic/siglist-compat.c | 1 | ||||
| -rw-r--r-- | sysdeps/generic/siglist-compat.h | 47 |
2 files changed, 48 insertions, 0 deletions
diff --git a/sysdeps/generic/siglist-compat.c b/sysdeps/generic/siglist-compat.c new file mode 100644 index 0000000..6e25b02 --- /dev/null +++ b/sysdeps/generic/siglist-compat.c @@ -0,0 +1 @@ +/* Empty. */ diff --git a/sysdeps/generic/siglist-compat.h b/sysdeps/generic/siglist-compat.h new file mode 100644 index 0000000..13e5f25 --- /dev/null +++ b/sysdeps/generic/siglist-compat.h @@ -0,0 +1,47 @@ +/* Generic siglist compatibility macro definitions. + Copyright (C) 2020 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <https://www.gnu.org/licenses/>. */ + +#ifndef _SIGLIST_COMPAT_H +#define _SIGLIST_COMPAT_H + +#include <shlib-compat.h> +#include <limits.h> + +/* Define new compat symbols for sys_siglist, _sys_siglist, and sys_sigabbrev + for version VERSION with NUMBERSIG times the number of bytes per long int. + Both _sys_siglist and sys_siglist alias to __sys_siglist while + sys_sigabbrev alias to __sys_sigabbrev. Both target alias are + define in siglist.c. */ +#define DEFINE_COMPAT_SIGLIST(NUMBERSIG, VERSION) \ + declare_symbol_alias (__ ## VERSION ## _sys_siglist, \ + __sys_siglist, \ + object, NUMBERSIG * (ULONG_WIDTH / UCHAR_WIDTH)); \ + declare_symbol_alias (__ ## VERSION ## sys_siglist, \ + __sys_siglist, \ + object, NUMBERSIG * (ULONG_WIDTH / UCHAR_WIDTH)); \ + declare_symbol_alias (__ ## VERSION ## _sys_sigabbrev, \ + __sys_sigabbrev, \ + object, NUMBERSIG * (ULONG_WIDTH / UCHAR_WIDTH)); \ + compat_symbol (libc, __## VERSION ## _sys_siglist, _sys_siglist, \ + VERSION); \ + compat_symbol (libc, __## VERSION ## sys_siglist, sys_siglist, \ + VERSION); \ + compat_symbol (libc, __## VERSION ## _sys_sigabbrev, sys_sigabbrev, \ + VERSION); \ + +#endif |