diff options
Diffstat (limited to 'gnulib/import/m4/open.m4')
| -rw-r--r-- | gnulib/import/m4/open.m4 | 49 |
1 files changed, 7 insertions, 42 deletions
diff --git a/gnulib/import/m4/open.m4 b/gnulib/import/m4/open.m4 index 53d30381dd7..6cf0bebb176 100644 --- a/gnulib/import/m4/open.m4 +++ b/gnulib/import/m4/open.m4 @@ -1,5 +1,5 @@ -# open.m4 serial 14 -dnl Copyright (C) 2007-2016 Free Software Foundation, Inc. +# open.m4 serial 15 +dnl Copyright (C) 2007-2019 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. @@ -7,6 +7,7 @@ dnl with or without modifications, as long as this notice is preserved. AC_DEFUN([gl_FUNC_OPEN], [ AC_REQUIRE([AC_CANONICAL_HOST]) + AC_REQUIRE([gl_PREPROC_O_CLOEXEC]) case "$host_os" in mingw* | pw*) REPLACE_OPEN=1 @@ -15,48 +16,12 @@ AC_DEFUN([gl_FUNC_OPEN], dnl open("foo/") should not create a file when the file name has a dnl trailing slash. FreeBSD only has the problem on symlinks. AC_CHECK_FUNCS_ONCE([lstat]) - AC_CACHE_CHECK([whether open recognizes a trailing slash], - [gl_cv_func_open_slash], - [# Assume that if we have lstat, we can also check symlinks. - if test $ac_cv_func_lstat = yes; then - touch conftest.tmp - ln -s conftest.tmp conftest.lnk - fi - AC_RUN_IFELSE( - [AC_LANG_SOURCE([[ -#include <fcntl.h> -#if HAVE_UNISTD_H -# include <unistd.h> -#endif -int main () -{ - int result = 0; -#if HAVE_LSTAT - if (open ("conftest.lnk/", O_RDONLY) != -1) - result |= 1; -#endif - if (open ("conftest.sl/", O_CREAT, 0600) >= 0) - result |= 2; - return result; -}]])], - [gl_cv_func_open_slash=yes], - [gl_cv_func_open_slash=no], - [ -changequote(,)dnl - case "$host_os" in - freebsd* | aix* | hpux* | solaris2.[0-9] | solaris2.[0-9].*) - gl_cv_func_open_slash="guessing no" ;; - *) - gl_cv_func_open_slash="guessing yes" ;; - esac -changequote([,])dnl - ]) - rm -f conftest.sl conftest.tmp conftest.lnk - ]) + if test "$gl_cv_macro_O_CLOEXEC" != yes; then + REPLACE_OPEN=1 + fi + gl_OPEN_TRAILING_SLASH_BUG case "$gl_cv_func_open_slash" in *no) - AC_DEFINE([OPEN_TRAILING_SLASH_BUG], [1], - [Define to 1 if open() fails to recognize a trailing slash.]) REPLACE_OPEN=1 ;; esac |