stat: fix rdev

kernel-src/include/kernel/abi.h

@@ -74,4 +74,8 @@ typedef struct {
 #define GETTYPE(m) (((m) >> 12) & 0xF)
 #define MAKETYPE(m) (((m) & 0xF) << 12)
 
+#define TODEV(major,minor) (((major & 0xFFF) << 8) + (minor & 0xFF))
+#define MAJORDEV(dev) ((dev >> 8) & 0xFFF)
+#define MINORDEV(dev) (dev & 0xFF)
+
 #endif

kernel-src/sys/syscalls/stat.c

@@ -12,8 +12,8 @@ static int dostat(vnode_t *vnode, stat_t *stat) {
 	if (e)
 		return e;
 
-
-	// TODO dev rdev
+	stat->dev = 0; // TODO properly return this
+	stat->rdev = TODEV(attr.rdevmajor, attr.rdevminor);
 	stat->ino = attr.inode;
 	stat->nlink = attr.nlinks;
 	stat->mode = attr.mode | MAKETYPE(vfs_getposixtype(attr.type));