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dnl Copyright (C) 2007-2023 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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[ |
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if test $ac_cv_func_lstat = yes; then |
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touch conftest.tmp |
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ln -s conftest.tmp conftest.lnk |
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fi |
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AC_RUN_IFELSE( |
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[AC_LANG_SOURCE([[ |
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]GL_MDA_DEFINES[ |
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int main () |
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{ |
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int result = 0; |
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if (open ("conftest.lnk/", O_RDONLY) != -1) |
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result |= 1; |
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if (open ("conftest.sl/", O_CREAT, 0600) >= 0) |
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result |= 2; |
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return result; |
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}]])], |
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[gl_cv_func_open_slash=yes], |
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[gl_cv_func_open_slash=no], |
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[ |
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changequote(,)dnl |
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case "$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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