Adding upstream version 255.4.upstream/255.4

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 27 insertions, 0 deletions

diff --git a/src/basic/ioprio-util.h b/src/basic/ioprio-util.h
new file mode 100644
index 0000000..b8c9b7d
--- /dev/null
+++ b/src/basic/ioprio-util.h
@@ -0,0 +1,27 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+#pragma once
+
+#include "macro.h"
+#include "missing_ioprio.h"
+
+int ioprio_class_to_string_alloc(int i, char **s);
+int ioprio_class_from_string(const char *s);
+
+static inline bool ioprio_class_is_valid(int i) {
+        return IN_SET(i, IOPRIO_CLASS_NONE, IOPRIO_CLASS_RT, IOPRIO_CLASS_BE, IOPRIO_CLASS_IDLE);
+}
+
+static inline bool ioprio_priority_is_valid(int i) {
+        return i >= 0 && i < IOPRIO_BE_NR;
+}
+
+int ioprio_parse_priority(const char *s, int *ret);
+
+/* IOPRIO_CLASS_NONE with any prio value is another way to say IOPRIO_CLASS_BE with level 4. Encode that in a
+ * proper macro. */
+#define IOPRIO_DEFAULT_CLASS_AND_PRIO ioprio_prio_value(IOPRIO_CLASS_BE, 4)
+
+static inline int ioprio_normalize(int v) {
+        /* Converts IOPRIO_CLASS_NONE to what it actually means */
+        return ioprio_prio_class(v) == IOPRIO_CLASS_NONE ? IOPRIO_DEFAULT_CLASS_AND_PRIO : v;
+}