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
43 lines
1.4 KiB
C
43 lines
1.4 KiB
C
/* Reading the per-thread memory protection key, powerpc64 version.
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Copyright (C) 2017-2022 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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<http://www.gnu.org/licenses/>. */
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#include <arch-pkey.h>
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#include <errno.h>
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#include <sys/mman.h>
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int
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pkey_get (int key)
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{
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if (key < 0 || key > PKEY_MAX)
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{
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__set_errno (EINVAL);
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return -1;
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}
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unsigned int index = pkey_index (key);
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unsigned long int amr = pkey_read ();
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unsigned int bits = (amr >> index) & 3;
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/* Translate from AMR values. PKEY_AMR_READ standing alone is not
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currently representable. */
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if (bits & PKEY_AMR_READ)
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return PKEY_DISABLE_ACCESS;
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else if (bits == PKEY_AMR_WRITE)
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return PKEY_DISABLE_WRITE;
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return 0;
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}
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