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Also, change sources.redhat.com to sourceware.org.
This patch was automatically generated by running the following shell
script, which uses GNU sed, and which avoids modifying files imported
from upstream:
sed -ri '
s,(http|ftp)(://(.*\.)?(gnu|fsf|sourceware)\.org($|[^.]|\.[^a-z])),https\2,g
s,(http|ftp)(://(.*\.)?)sources\.redhat\.com($|[^.]|\.[^a-z]),https\2sourceware.org\4,g
' \
$(find $(git ls-files) -prune -type f \
! -name '*.po' \
! -name 'ChangeLog*' \
! -path COPYING ! -path COPYING.LIB \
! -path manual/fdl-1.3.texi ! -path manual/lgpl-2.1.texi \
! -path manual/texinfo.tex ! -path scripts/config.guess \
! -path scripts/config.sub ! -path scripts/install-sh \
! -path scripts/mkinstalldirs ! -path scripts/move-if-change \
! -path INSTALL ! -path locale/programs/charmap-kw.h \
! -path po/libc.pot ! -path sysdeps/gnu/errlist.c \
! '(' -name configure \
-execdir test -f configure.ac -o -f configure.in ';' ')' \
! '(' -name preconfigure \
-execdir test -f preconfigure.ac ';' ')' \
-print)
and then by running 'make dist-prepare' to regenerate files built
from the altered files, and then executing the following to cleanup:
chmod a+x sysdeps/unix/sysv/linux/riscv/configure
# Omit irrelevant whitespace and comment-only changes,
# perhaps from a slightly-different Autoconf version.
git checkout -f \
sysdeps/csky/configure \
sysdeps/hppa/configure \
sysdeps/riscv/configure \
sysdeps/unix/sysv/linux/csky/configure
# Omit changes that caused a pre-commit check to fail like this:
# remote: *** error: sysdeps/powerpc/powerpc64/ppc-mcount.S: trailing lines
git checkout -f \
sysdeps/powerpc/powerpc64/ppc-mcount.S \
sysdeps/unix/sysv/linux/s390/s390-64/syscall.S
# Omit change that caused a pre-commit check to fail like this:
# remote: *** error: sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S: last line does not end in newline
git checkout -f sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S
73 lines
2.9 KiB
C
73 lines
2.9 KiB
C
/* Threshold at which to diagnose ELOOP. Generic version.
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Copyright (C) 2012-2019 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 _ELOOP_THRESHOLD_H
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#define _ELOOP_THRESHOLD_H 1
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#include <limits.h>
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#include <sys/param.h>
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/* POSIX specifies SYMLOOP_MAX as the "Maximum number of symbolic
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links that can be reliably traversed in the resolution of a
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pathname in the absence of a loop." This makes it a minimum that
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we should certainly accept. But it leaves open the possibility
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that more might sometimes work--just not "reliably".
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For example, Linux implements a complex policy whereby there is a
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small limit on the number of direct symlink traversals (a symlink
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to a symlink to a symlink), but larger limit on the total number of
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symlink traversals overall. Hence the SYMLOOP_MAX number should be
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the small one, but the limit library functions enforce on users
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should be the larger one.
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So, we use the larger of the reported SYMLOOP_MAX (if any) and our
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own constant MIN_ELOOP_THRESHOLD, below. This constant should be
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large enough that it never rules out a file name and directory tree
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that the underlying system (i.e. calls to 'open' et al) would
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resolve successfully. It should be small enough that actual loops
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are detected without a huge number of iterations. */
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#ifndef MIN_ELOOP_THRESHOLD
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# define MIN_ELOOP_THRESHOLD 40
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#endif
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/* Return the maximum number of symlink traversals to permit
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before diagnosing ELOOP. */
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static inline unsigned int __attribute__ ((const))
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__eloop_threshold (void)
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{
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#ifdef SYMLOOP_MAX
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const int symloop_max = SYMLOOP_MAX;
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#else
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/* The function is marked 'const' even though we use memory and
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call a function, because sysconf is required to return the
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same value in every call and so it must always be safe to
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call __eloop_threshold exactly once and reuse the value. */
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static long int sysconf_symloop_max;
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if (sysconf_symloop_max == 0)
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sysconf_symloop_max = __sysconf (_SC_SYMLOOP_MAX);
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const unsigned int symloop_max = (sysconf_symloop_max <= 0
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? _POSIX_SYMLOOP_MAX
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: sysconf_symloop_max);
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#endif
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return MAX (symloop_max, MIN_ELOOP_THRESHOLD);
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}
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#endif /* eloop-threshold.h */
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