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78669517dc
This incorporates: 2019-09-22 Update some URLs 2019-09-15 fcntl-h: fix compilation error of creat.c on MSVC 2019-09-15 creat: new module 2019-09-15 access: new module 2019-09-09 Add option to assume best, not worst, when cross-compiling. * build-aux/config.guess, build-aux/config.sub, doc/misc/texinfo.tex: * lib/careadlinkat.c, lib/careadlinkat.h, lib/count-leading-zeros.h: * lib/count-trailing-zeros.h, lib/diffseq.h, lib/fcntl.in.h: * lib/ftoastr.c, lib/get-permissions.c: * lib/ieee754.in.h, lib/inttypes.in.h, lib/mktime.c, lib/open.c: * lib/pathmax.h, lib/pipe2.c, lib/stddef.in.h, lib/stdint.in.h: * lib/stdlib.in.h, lib/str-two-way.h, lib/string.in.h, lib/time.in.h: * lib/timegm.c, lib/unistd.in.h, m4/canonicalize.m4: * m4/extern-inline.m4, m4/fcntl_h.m4, m4/fdopendir.m4: * m4/getgroups.m4, m4/getopt.m4, m4/gettimeofday.m4: * m4/gnulib-common.m4, m4/largefile.m4: * m4/lstat.m4, m4/memmem.m4, m4/mktime.m4, m4/nocrash.m4, m4/open.m4: * m4/pselect.m4, m4/putenv.m4, m4/readlink.m4, m4/regex.m4: * m4/symlink.m4, m4/unistd_h.m4, m4/utimens.m4, m4/utimes.m4: Copy from Gnulib. * lib/gnulib.mk.in, m4/gnulib-comp.m4: Regenerate. * m4/open-slash.m4: New file, copied from Gnulib.
60 lines
1.8 KiB
Plaintext
60 lines
1.8 KiB
Plaintext
# open-slash.m4 serial 1
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dnl Copyright (C) 2007-2019 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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dnl Tests whether open() and creat() recognize a trailing slash.
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dnl Sets gl_cv_func_open_slash.
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AC_DEFUN([gl_OPEN_TRAILING_SLASH_BUG],
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[
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AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
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dnl open("foo/") should not create a file when the file name has a
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dnl trailing slash. FreeBSD only has the problem on symlinks.
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AC_CHECK_FUNCS_ONCE([lstat])
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AC_CACHE_CHECK([whether open recognizes a trailing slash],
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[gl_cv_func_open_slash],
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[# Assume that if we have lstat, we can also check symlinks.
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if test $ac_cv_func_lstat = yes; then
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touch conftest.tmp
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ln -s conftest.tmp conftest.lnk
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fi
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AC_RUN_IFELSE(
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[AC_LANG_SOURCE([[
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#include <fcntl.h>
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#if HAVE_UNISTD_H
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# include <unistd.h>
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#endif
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int main ()
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{
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int result = 0;
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#if HAVE_LSTAT
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if (open ("conftest.lnk/", O_RDONLY) != -1)
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result |= 1;
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#endif
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if (open ("conftest.sl/", O_CREAT, 0600) >= 0)
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result |= 2;
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return result;
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}]])],
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[gl_cv_func_open_slash=yes],
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[gl_cv_func_open_slash=no],
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[
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changequote(,)dnl
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case "$host_os" in
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freebsd* | aix* | hpux* | solaris2.[0-9] | solaris2.[0-9].*)
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gl_cv_func_open_slash="guessing no" ;;
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*)
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gl_cv_func_open_slash="guessing yes" ;;
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esac
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changequote([,])dnl
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])
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rm -f conftest.sl conftest.tmp conftest.lnk
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])
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case "$gl_cv_func_open_slash" in
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*no)
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AC_DEFINE([OPEN_TRAILING_SLASH_BUG], [1],
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[Define to 1 if open() fails to recognize a trailing slash.])
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;;
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esac
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])
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