diff --git a/configure.ac b/configure.ac
index 847fdbd54d2..71a899f5f40 100644
--- a/configure.ac
+++ b/configure.ac
@@ -4088,16 +4088,16 @@ case $with_file_notification,$opsys in
fi ;;
esac
-dnl inotify is available only on GNU/Linux.
+dnl inotify is available only on Linux-kernel based systems.
case $with_file_notification,$NOTIFY_OBJ in
inotify, | yes,)
AC_CHECK_HEADER([sys/inotify.h])
if test "$ac_cv_header_sys_inotify_h" = yes ; then
- AC_CHECK_FUNC([inotify_init1])
- if test "$ac_cv_func_inotify_init1" = yes; then
+ AC_CHECK_FUNCS([inotify_init inotify_init1])
+ if test "$ac_cv_func_inotify_init" = yes; then
AC_DEFINE([HAVE_INOTIFY], [1], [Define to 1 to use inotify.])
NOTIFY_OBJ=inotify.o
- NOTIFY_SUMMARY="yes -lglibc (inotify)"
+ NOTIFY_SUMMARY="yes (inotify)"
fi
fi ;;
esac
diff --git a/src/inotify.c b/src/inotify.c
index 2ee874530cc..7140568f1b6 100644
--- a/src/inotify.c
+++ b/src/inotify.c
@@ -26,6 +26,8 @@ along with GNU Emacs. If not, see . */
#include "termhooks.h"
#include
+#include
+
#include
#include
@@ -434,7 +436,15 @@ IN_ONESHOT */)
if (inotifyfd < 0)
{
+#ifdef HAVE_INOTIFY_INIT1
inotifyfd = inotify_init1 (IN_NONBLOCK | IN_CLOEXEC);
+#else /* !HAVE_INOTIFY_INIT1 */
+ /* This is prey to race conditions with other threads calling
+ exec. */
+ inotifyfd = inotify_init ();
+ fcntl (inotifyfd, F_SETFL, O_NONBLOCK);
+ fcntl (inotifyfd, F_SETFD, O_CLOEXEC);
+#endif /* HAVE_INOTIFY_INIT1 */
if (inotifyfd < 0)
report_file_notify_error ("File watching is not available", Qnil);
watch_list = Qnil;