1 files changed, 92 insertions, 0 deletions
diff --git a/ubifs-utils/common/linux_types.h b/ubifs-utils/common/linux_types.h
new file mode 100644
index 0000000..ebf9ecd
--- /dev/null
+++ b/ubifs-utils/common/linux_types.h
@@ -0,0 +1,92 @@
+#ifndef __LINUX_TYPES_H__
+#define __LINUX_TYPES_H__
+
+#include <linux/types.h>
+#include <sys/types.h>
+#include <byteswap.h>
+#include <stdint.h>
+#include <unistd.h>
+
+#include "compiler_attributes.h"
+
+typedef __u8		u8;
+typedef __u16		u16;
+typedef __u32		u32;
+typedef __u64		u64;
+
+typedef __s64		time64_t;
+
+struct qstr {
+	const char *name;
+	size_t len;
+};
+
+struct fscrypt_name {
+	struct qstr disk_name;
+};
+
+#define fname_name(p)	((p)->disk_name.name)
+#define fname_len(p)	((p)->disk_name.len)
+
+#define S_IRUGO		(S_IRUSR|S_IRGRP|S_IROTH)
+#define S_IXUGO		(S_IXUSR|S_IXGRP|S_IXOTH)
+
+#define t16(x) ({ \
+	uint16_t __b = (x); \
+	(__LITTLE_ENDIAN==__BYTE_ORDER) ? __b : bswap_16(__b); \
+})
+
+#define t32(x) ({ \
+	uint32_t __b = (x); \
+	(__LITTLE_ENDIAN==__BYTE_ORDER) ? __b : bswap_32(__b); \
+})
+
+#define t64(x) ({ \
+	uint64_t __b = (x); \
+	(__LITTLE_ENDIAN==__BYTE_ORDER) ? __b : bswap_64(__b); \
+})
+
+#define cpu_to_le16(x) ((__le16){t16(x)})
+#define cpu_to_le32(x) ((__le32){t32(x)})
+#define cpu_to_le64(x) ((__le64){t64(x)})
+
+#define le16_to_cpu(x) (t16((x)))
+#define le32_to_cpu(x) (t32((x)))
+#define le64_to_cpu(x) (t64((x)))
+
+#define check_mul_overflow(a, b, d) ({		\
+	typeof(a) __a = (a);			\
+	typeof(b) __b = (b);			\
+	typeof(d) __d = (d);			\
+	(void) (&__a == &__b);			\
+	(void) (&__a == __d);			\
+	__builtin_mul_overflow(__a, __b, __d);	\
+})
+
+static inline __must_check size_t array_size(size_t a, size_t b)
+{
+	size_t bytes;
+	if (check_mul_overflow(a, b, &bytes))
+		return SIZE_MAX;
+
+	return bytes;
+}
+
+static inline int int_log2(unsigned int arg)
+{
+	int  l = 0;
+
+	arg >>= 1;
+	while (arg) {
+		l++;
+		arg >>= 1;
+	}
+	return l;
+}
+
+#undef PAGE_SIZE
+#define PAGE_SIZE (getpagesize())
+#undef PAGE_SHIFT
+#define PAGE_SHIFT (int_log2(PAGE_SIZE))
+
+#endif