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846657afaf
This incorporates: 2020-08-16 time_rz: remove unused functions 2020-08-16 time_rz: fix issues with mktime_z failures 2020-08-16 nstrftime: Guide inlining also on clang 2020-08-16 intprops: Avoid bogus warning on clang 2020-08-16 libc-config: Enable __REDIRECT macro also on clang 2020-08-16 regex: Use initializer shorthand syntax also with clang 2020-08-16 regex: Use space optimization also with clang 2020-08-16 Use _Static_assert and static_assert when present on clang 2020-08-16 Use 'throw ()' for optimization in C++ mode also on clang 2020-08-16 stdio: Don't break attribute 'scanf' on clang 2020-08-16 Fix "warning: 'format' attribute ...: rpl_printf" 2020-08-16 Fix "warning: attribute declaration must precede definition" 2020-08-16 Fix undesired warnings 2020-08-16 Don't use Autoconf quadrigraphsxo 2020-08-16 Fix quoting of AC_LANG_PROGRAM arguments 2020-08-16 Assume autoconf >= 2.64 2020-08-15 nstrftime: be more predictable about errno 2020-08-15 canonicalize: Fix autoconf test on MSVC/clang 2020-08-15 Support compiling without -loldnames on native Windows 2020-08-14 mktime, mktime-internal: Remove obsolete code 2020-08-14 Assume tzset exists * lib/c++defs.h, lib/canonicalize-lgpl.c, lib/cdefs.h, lib/dup2.c: * lib/fcntl.in.h, lib/getopt-cdefs.in.h, lib/intprops.h, lib/md5.h: * lib/mktime.c, lib/nstrftime.c, lib/open.c, lib/regcomp.c: * lib/regex_internal.h, lib/stdio.in.h, lib/stdlib.in.h: * lib/strftime.h, lib/string.in.h, lib/sys_select.in.h: * lib/sys_stat.in.h, lib/sys_time.in.h, lib/time.in.h, lib/time_rz.c: * lib/unistd.in.h, lib/verify.h, m4/00gnulib.m4: * m4/absolute-header.m4, m4/alloca.m4, m4/canonicalize.m4, m4/dup2.m4: * m4/fchmodat.m4, m4/fcntl.m4, m4/fdopendir.m4, m4/fpending.m4: * m4/futimens.m4, m4/getdtablesize.m4, m4/getloadavg.m4: * m4/gnulib-common.m4, m4/include_next.m4, m4/largefile.m4: * m4/manywarnings.m4, m4/mktime.m4, m4/nstrftime.m4, m4/open-slash.m4: * m4/pselect.m4, m4/pthread_sigmask.m4, m4/time_h.m4, m4/utimens.m4: * m4/utimensat.m4, m4/utimes.m4, m4/warnings.m4: Copy from Gnulib. * lib/gnulib.mk.in: Regenerate.
83 lines
2.7 KiB
Plaintext
83 lines
2.7 KiB
Plaintext
# fchmodat.m4 serial 5
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dnl Copyright (C) 2004-2020 Free Software Foundation, Inc.
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dnl This file is free software; the Free Software Foundation
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dnl gives unlimited permission to copy and/or distribute it,
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dnl with or without modifications, as long as this notice is preserved.
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# Written by Jim Meyering.
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AC_DEFUN([gl_FUNC_FCHMODAT],
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[
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AC_REQUIRE([gl_SYS_STAT_H_DEFAULTS])
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AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
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AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
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AC_CHECK_FUNCS_ONCE([fchmodat lchmod])
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if test $ac_cv_func_fchmodat != yes; then
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HAVE_FCHMODAT=0
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else
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AC_CACHE_CHECK(
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[whether fchmodat+AT_SYMLINK_NOFOLLOW works on non-symlinks],
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[gl_cv_func_fchmodat_works],
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[dnl This test fails on GNU/Linux with glibc 2.31 (but not on
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dnl GNU/kFreeBSD nor GNU/Hurd) and Cygwin 2.9.
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AC_RUN_IFELSE(
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[AC_LANG_PROGRAM(
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[
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AC_INCLUDES_DEFAULT[
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#include <fcntl.h>
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#ifndef S_IRUSR
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#define S_IRUSR 0400
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#endif
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#ifndef S_IWUSR
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#define S_IWUSR 0200
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#endif
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#ifndef S_IRWXU
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#define S_IRWXU 0700
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#endif
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#ifndef S_IRWXG
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#define S_IRWXG 0070
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#endif
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#ifndef S_IRWXO
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#define S_IRWXO 0007
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#endif
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]GL_MDA_DEFINES],
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[[
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int permissive = S_IRWXU | S_IRWXG | S_IRWXO;
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int desired = S_IRUSR | S_IWUSR;
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static char const f[] = "conftest.fchmodat";
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struct stat st;
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if (creat (f, permissive) < 0)
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return 1;
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if (fchmodat (AT_FDCWD, f, desired, AT_SYMLINK_NOFOLLOW) != 0)
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return 1;
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if (stat (f, &st) != 0)
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return 1;
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return ! ((st.st_mode & permissive) == desired);
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]])],
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[gl_cv_func_fchmodat_works=yes],
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[gl_cv_func_fchmodat_works=no],
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[case "$host_os" in
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dnl Guess no on Linux with glibc and Cygwin, yes otherwise.
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linux-gnu* | cygwin*) gl_cv_func_fchmodat_works="guessing no" ;;
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*) gl_cv_func_fchmodat_works="$gl_cross_guess_normal" ;;
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esac
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])
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rm -f conftest.fchmodat])
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case $gl_cv_func_fchmodat_works in
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*yes) ;;
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*)
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AC_DEFINE([NEED_FCHMODAT_NONSYMLINK_FIX], [1],
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[Define to 1 if fchmodat+AT_SYMLINK_NOFOLLOW does not work right on non-symlinks.])
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REPLACE_FCHMODAT=1
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;;
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esac
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fi
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])
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# Prerequisites of lib/fchmodat.c.
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AC_DEFUN([gl_PREREQ_FCHMODAT],
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[
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AC_CHECK_FUNCS_ONCE([lchmod])
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:
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])
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