-#serial 19
+#serial 22
# Copyright (C) 2001, 2003-2007, 2009-2011 Free Software Foundation, Inc.
# This file is free software; the Free Software Foundation
# Other systems lack mkstemp altogether.
# On OSF1/Tru64 V4.0F, the system-provided mkstemp function can create
# only 32 files per process.
+# On some hosts, mkstemp creates files with mode 0666, which is a security
+# problem and a violation of POSIX 2008.
# On systems like the above, arrange to use the replacement function.
AC_DEFUN([gl_FUNC_MKSTEMP],
[
AC_REQUIRE([gl_STDLIB_H_DEFAULTS])
- AC_REQUIRE([AC_SYS_LARGEFILE])
AC_CHECK_FUNCS_ONCE([mkstemp])
if test $ac_cv_func_mkstemp = yes; then
off_t large = (off_t) 4294967295u;
if (large < 0)
large = 2147483647;
+ umask (0);
for (i = 0; i < 70; i++)
{
char templ[] = "conftest.mkstemp/coXXXXXX";
result |= 1;
else
{
+ struct stat st;
if (lseek (fd, large, SEEK_SET) != large)
result |= 2;
- close (fd);
+ if (fstat (fd, &st) < 0)
+ result |= 4;
+ else if (st.st_mode & 0077)
+ result |= 8;
+ if (close (fd))
+ result |= 16;
}
}
return result;]])],
[gl_cv_func_working_mkstemp=yes],
[gl_cv_func_working_mkstemp=no],
- [gl_cv_func_working_mkstemp=no])
+ [gl_cv_func_working_mkstemp="guessing no"])
rm -rf conftest.mkstemp
])
- if test $gl_cv_func_working_mkstemp != yes; then
+ if test "$gl_cv_func_working_mkstemp" != yes; then
REPLACE_MKSTEMP=1
- AC_LIBOBJ([mkstemp])
- gl_PREREQ_MKSTEMP
fi
else
HAVE_MKSTEMP=0
- AC_LIBOBJ([mkstemp])
- gl_PREREQ_MKSTEMP
fi
])