-#define MS_MGC_VAL 0xc0ed0000 /* Magic number indicatng "new" flags */
-#define MS_RDONLY 1 /* Mount read-only */
-#define MS_NOSUID 2 /* Ignore suid and sgid bits */
-#define MS_NODEV 4 /* Disallow access to device special files */
-#define MS_NOEXEC 8 /* Disallow program execution */
-#define MS_SYNCHRONOUS 16 /* Writes are synced at once */
-#define MS_REMOUNT 32 /* Alter flags of a mounted FS */
-#define MS_MANDLOCK 64 /* Allow mandatory locks on an FS */
-#define S_QUOTA 128 /* Quota initialized for file/directory/symlink */
-#define S_APPEND 256 /* Append-only file */
-#define S_IMMUTABLE 512 /* Immutable file */
-#define MS_NOATIME 1024 /* Do not update access times. */
-#define MS_NODIRATIME 2048 /* Do not update directory access times */
+static const int MS_MGC_VAL = 0xc0ed0000; /* Magic number indicatng "new" flags */
+static const int MS_RDONLY = 1; /* Mount read-only */
+static const int MS_NOSUID = 2; /* Ignore suid and sgid bits */
+static const int MS_NODEV = 4; /* Disallow access to device special files */
+static const int MS_NOEXEC = 8; /* Disallow program execution */
+static const int MS_SYNCHRONOUS = 16; /* Writes are synced at once */
+static const int MS_REMOUNT = 32; /* Alter flags of a mounted FS */
+static const int MS_MANDLOCK = 64; /* Allow mandatory locks on an FS */
+static const int S_QUOTA = 128; /* Quota initialized for file/directory/symlink */
+static const int S_APPEND = 256; /* Append-only file */
+static const int S_IMMUTABLE = 512; /* Immutable file */
+static const int MS_NOATIME = 1024; /* Do not update access times. */
+static const int MS_NODIRATIME = 2048; /* Do not update directory access times */