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581c785bf3
I used these shell commands: ../glibc/scripts/update-copyrights $PWD/../gnulib/build-aux/update-copyright (cd ../glibc && git commit -am"[this commit message]") and then ignored the output, which consisted lines saying "FOO: warning: copyright statement not found" for each of 7061 files FOO. I then removed trailing white space from math/tgmath.h, support/tst-support-open-dev-null-range.c, and sysdeps/x86_64/multiarch/strlen-vec.S, to work around the following obscure pre-commit check failure diagnostics from Savannah. I don't know why I run into these diagnostics whereas others evidently do not. remote: *** 912-#endif remote: *** 913: remote: *** 914- remote: *** error: lines with trailing whitespace found ... remote: *** error: sysdeps/unix/sysv/linux/statx_cp.c: trailing lines
55 lines
2.1 KiB
C
55 lines
2.1 KiB
C
/* Support for STV_PROTECTED visibility. Generic version.
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Copyright (C) 2021-2022 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 _DL_PROTECTED_H
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#define _DL_PROTECTED_H
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static inline void __attribute__ ((always_inline))
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_dl_check_protected_symbol (const char *undef_name,
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const struct link_map *undef_map,
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const ElfW(Sym) *ref,
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const struct link_map *map,
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int type_class)
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{
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if (undef_map != NULL
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&& undef_map->l_type == lt_executable
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&& !(undef_map->l_1_needed
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& GNU_PROPERTY_1_NEEDED_INDIRECT_EXTERN_ACCESS)
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&& (map->l_1_needed
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& GNU_PROPERTY_1_NEEDED_INDIRECT_EXTERN_ACCESS))
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{
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if ((type_class & ELF_RTYPE_CLASS_COPY))
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/* Disallow copy relocations in executable against protected
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data symbols in a shared object which needs indirect external
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access. */
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_dl_signal_error (0, map->l_name, undef_name,
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N_("copy relocation against non-copyable protected symbol"));
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else if (ref->st_value != 0
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&& ref->st_shndx == SHN_UNDEF
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&& (type_class & ELF_RTYPE_CLASS_PLT))
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/* Disallow non-zero symbol values of undefined symbols in
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executable, which are used as the function pointer, against
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protected function symbols in a shared object with indirect
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external access. */
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_dl_signal_error (0, map->l_name, undef_name,
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N_("non-canonical reference to canonical protected function"));
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}
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}
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#endif /* _DL_PROTECTED_H */
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