path: add .path unit type for monitoring files

[elogind.git] / src / util.c

diff --git a/src/util.c b/src/util.c
index a8ea4a97ab745dbc3ea4400176e10d9bae29f4e9..7664df59d06359150f0a5c1a82d13b16800038ed 100644 (file)
--- a/src/util.c
+++ b/src/util.c
@@ -2092,6 +2092,35 @@ bool is_device_path(const char *path) {
                 path_startswith(path, "/sys/");
 }
 
+int dir_is_empty(const char *path) {
+        DIR *d;
+        int r;
+        struct dirent buf, *de;
+
+        if (!(d = opendir(path)))
+                return -errno;
+
+        for (;;) {
+                if ((r = readdir_r(d, &buf, &de)) > 0) {
+                        r = -r;
+                        break;
+                }
+
+                if (!de) {
+                        r = 1;
+                        break;
+                }
+
+                if (!ignore_file(de->d_name)) {
+                        r = 0;
+                        break;
+                }
+        }
+
+        closedir(d);
+        return r;
+}
+
 static const char *const ioprio_class_table[] = {
         [IOPRIO_CLASS_NONE] = "none",
         [IOPRIO_CLASS_RT] = "realtime",