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+/*
+ * Definitions of common constant and generic macros of libcryptsetup
+ *
+ * Copyright (C) 2009-2023 Red Hat, Inc. All rights reserved.
+ * Copyright (C) 2009-2023 Milan Broz
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#ifndef _LIBCRYPTSETUP_MACROS_H
+#define _LIBCRYPTSETUP_MACROS_H
+
+/* to silent gcc -Wcast-qual for const cast */
+#define CONST_CAST(x) (x)(uintptr_t)
+
+/* to silent clang -Wcast-align when working with byte arrays */
+#define VOIDP_CAST(x) (x)(void*)
+
+#define UNUSED(x) (void)(x)
+
+#ifndef ARRAY_SIZE
+# define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]))
+#endif
+
+#define BITFIELD_SIZE(BF_PTR) (sizeof(*(BF_PTR)) * 8)
+
+#define MOVE_REF(x, y) \
+ do { \
+ __typeof__(x) *_px = &(x), *_py = &(y); \
+ *_px = *_py; \
+ *_py = NULL; \
+ } while (0)
+
+#define FREE_AND_NULL(x) do { free(x); x = NULL; } while (0)
+
+#define AT_LEAST(a, b) ({ __typeof__(a) __at_least = (a); (__at_least >= (b))?__at_least:(b); })
+
+#define SHIFT_4K 12
+#define SECTOR_SHIFT 9
+#define SECTOR_SIZE (1 << SECTOR_SHIFT)
+#define MAX_SECTOR_SIZE 4096 /* min page size among all platforms */
+#define ROUND_SECTOR(x) (((x) + SECTOR_SIZE - 1) / SECTOR_SIZE)
+
+#define MISALIGNED(a, b) ((a) & ((b) - 1))
+#define MISALIGNED_4K(a) MISALIGNED((a), 1 << SHIFT_4K)
+#define MISALIGNED_512(a) MISALIGNED((a), 1 << SECTOR_SHIFT)
+#define NOTPOW2(a) MISALIGNED((a), (a))
+
+#define DEFAULT_DISK_ALIGNMENT 1048576 /* 1MiB */
+#define DEFAULT_MEM_ALIGNMENT 4096
+
+#define DM_UUID_LEN 129
+#define DM_BY_ID_PREFIX "dm-uuid-"
+#define DM_BY_ID_PREFIX_LEN 8
+#define DM_UUID_PREFIX "CRYPT-"
+#define DM_UUID_PREFIX_LEN 6
+
+#endif /* _LIBCRYPTSETUP_MACROS_H */