-#serial 19
+#serial 23
-# Copyright (C) 2001, 2003-2007, 2009-2011 Free Software Foundation, Inc.
+# Copyright (C) 2001, 2003-2007, 2009-2013 Free Software Foundation, Inc.
# This file is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.
# 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_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
AC_CHECK_FUNCS_ONCE([mkstemp])
if test $ac_cv_func_mkstemp = yes; then
off_t large = (off_t) 4294967295u;
if (large < 0)
large = 2147483647;
+ umask (0);
for (i = 0; i < 70; i++)
{
char templ[] = "conftest.mkstemp/coXXXXXX";
result |= 1;
else
{
+ struct stat st;
if (lseek (fd, large, SEEK_SET) != large)
result |= 2;
- close (fd);
+ if (fstat (fd, &st) < 0)
+ result |= 4;
+ else if (st.st_mode & 0077)
+ result |= 8;
+ if (close (fd))
+ result |= 16;
}
}
return result;]])],
[gl_cv_func_working_mkstemp=yes],
[gl_cv_func_working_mkstemp=no],
- [gl_cv_func_working_mkstemp=no])
+ [case "$host_os" in
+ # Guess yes on glibc systems.
+ *-gnu*) gl_cv_func_working_mkstemp="guessing yes" ;;
+ # If we don't know, assume the worst.
+ *) gl_cv_func_working_mkstemp="guessing no" ;;
+ esac
+ ])
rm -rf conftest.mkstemp
])
- if test $gl_cv_func_working_mkstemp != yes; then
- REPLACE_MKSTEMP=1
- AC_LIBOBJ([mkstemp])
- gl_PREREQ_MKSTEMP
- fi
+ case "$gl_cv_func_working_mkstemp" in
+ *yes) ;;
+ *)
+ REPLACE_MKSTEMP=1
+ ;;
+ esac
else
HAVE_MKSTEMP=0
- AC_LIBOBJ([mkstemp])
- gl_PREREQ_MKSTEMP
fi
])