Index: uspace/srv/devman/util.c
===================================================================
--- uspace/srv/devman/util.c	(revision 791f58c4248a96e533fe2aa7be934a84a30a46c2)
+++ uspace/srv/devman/util.c	(revision c593b21792399e7d79c84c65fbb286804b0fcb8d)
@@ -111,4 +111,31 @@
 }
 
+ssize_t safe_read(int fd, void *buffer, size_t size)
+{
+	if (size == 0) {
+		return 0;
+	}
+
+	uint8_t *buf_ptr = (uint8_t *) buffer;
+
+	size_t total_read = 0;
+	while (total_read < size) {
+		ssize_t bytes_read = read(fd, buf_ptr, size - total_read);
+		if (bytes_read < 0) {
+			/* Error. */
+			return bytes_read;
+		} else if (bytes_read == 0) {
+			/* Possibly end of file. */
+			break;
+		} else {
+			/* Read at least something. */
+			buf_ptr += bytes_read;
+			total_read += bytes_read;
+		}
+	}
+
+	return (ssize_t) total_read;
+}
+
 /** @}
  */