--- linux/fs/minix/inode.c	2018/04/24 18:03:52	1.1.1.1
+++ linux/fs/minix/inode.c	2018/04/24 18:07:15	1.1.1.3
@@ -4,7 +4,7 @@
  *  (C) 1991  Linus Torvalds
  */
 
-#include <string.h>
+#include <linux/string.h>
 #include <sys/stat.h>
 
 #include <linux/sched.h>
@@ -13,15 +13,109 @@
 #include <linux/mm.h>
 #include <asm/system.h>
 
-static int _bmap(struct inode * inode,int block,int create)
+int sync_dev(int dev);
+
+void minix_put_inode(struct inode *inode)
+{
+	inode->i_size = 0;
+	minix_truncate(inode);
+	minix_free_inode(inode);
+}
+
+void minix_put_super(struct super_block *sb)
+{
+	int i;
+
+	lock_super(sb);
+	sb->s_dev = 0;
+	for(i = 0 ; i < MINIX_I_MAP_SLOTS ; i++)
+		brelse(sb->s_imap[i]);
+	for(i = 0 ; i < MINIX_Z_MAP_SLOTS ; i++)
+		brelse(sb->s_zmap[i]);
+	free_super(sb);
+	return;
+}
+
+static struct super_operations minix_sops = { 
+	minix_read_inode,
+	minix_write_inode,
+	minix_put_inode,
+	minix_put_super
+};
+
+struct super_block *minix_read_super(struct super_block *s,void *data)
+{
+	struct buffer_head *bh;
+	int i,dev=s->s_dev,block;
+
+	lock_super(s);
+	if (!(bh = bread(dev,1))) {
+		s->s_dev=0;
+		free_super(s);
+		printk("bread failed\n");
+		return NULL;
+	}
+	*((struct minix_super_block *) s) =
+		*((struct minix_super_block *) bh->b_data);
+	brelse(bh);
+	if (s->s_magic != MINIX_SUPER_MAGIC) {
+		s->s_dev = 0;
+		free_super(s);
+		printk("magic match failed\n");
+		return NULL;
+	}
+	for (i=0;i < MINIX_I_MAP_SLOTS;i++)
+		s->s_imap[i] = NULL;
+	for (i=0;i < MINIX_Z_MAP_SLOTS;i++)
+		s->s_zmap[i] = NULL;
+	block=2;
+	for (i=0 ; i < s->s_imap_blocks ; i++)
+		if (s->s_imap[i]=bread(dev,block))
+			block++;
+		else
+			break;
+	for (i=0 ; i < s->s_zmap_blocks ; i++)
+		if (s->s_zmap[i]=bread(dev,block))
+			block++;
+		else
+			break;
+	if (block != 2+s->s_imap_blocks+s->s_zmap_blocks) {
+		for(i=0;i<MINIX_I_MAP_SLOTS;i++)
+			brelse(s->s_imap[i]);
+		for(i=0;i<MINIX_Z_MAP_SLOTS;i++)
+			brelse(s->s_zmap[i]);
+		s->s_dev=0;
+		free_super(s);
+		printk("block failed\n");
+		return NULL;
+	}
+	s->s_imap[0]->b_data[0] |= 1;
+	s->s_zmap[0]->b_data[0] |= 1;
+	free_super(s);
+	/* set up enough so that it can read an inode */
+	s->s_dev = dev;
+	s->s_op = &minix_sops;
+	if (!(s->s_mounted = iget(dev,MINIX_ROOT_INO))) {
+		s->s_dev=0;
+		printk("get root inode failed\n");
+		return NULL;
+	}
+	return s;
+}
+
+static int _minix_bmap(struct inode * inode,int block,int create)
 {
 	struct buffer_head * bh;
 	int i;
 
-	if (block<0)
-		panic("_bmap: block<0");
-	if (block >= 7+512+512*512)
-		panic("_bmap: block>big");
+	if (block<0) {
+		printk("_minix_bmap: block<0");
+		return 0;
+	}
+	if (block >= 7+512+512*512) {
+		printk("_minix_bmap: block>big");
+		return 0;
+	}
 	if (block<7) {
 		if (create && !inode->i_data[block])
 			if (inode->i_data[block]=minix_new_block(inode->i_dev)) {
@@ -83,12 +177,12 @@ static int _bmap(struct inode * inode,in
 
 int minix_bmap(struct inode * inode,int block)
 {
-	return _bmap(inode,block,0);
+	return _minix_bmap(inode,block,0);
 }
 
 int minix_create_block(struct inode * inode, int block)
 {
-	return _bmap(inode,block,1);
+	return _minix_bmap(inode,block,1);
 }
 
 void minix_read_inode(struct inode * inode)
@@ -114,7 +208,17 @@ void minix_read_inode(struct inode * ino
 	else for (block = 0; block < 9; block++)
 		inode->i_data[block] = raw_inode->i_zone[block];
 	brelse(bh);
-	inode->i_op = &minix_inode_operations;
+	inode->i_op = NULL;
+	if (S_ISREG(inode->i_mode))
+		inode->i_op = &minix_file_inode_operations;
+	else if (S_ISDIR(inode->i_mode))
+		inode->i_op = &minix_dir_inode_operations;
+	else if (S_ISLNK(inode->i_mode))
+		inode->i_op = &minix_symlink_inode_operations;
+	else if (S_ISCHR(inode->i_mode))
+		inode->i_op = &minix_chrdev_inode_operations;
+	else if (S_ISBLK(inode->i_mode))
+		inode->i_op = &minix_blkdev_inode_operations;
 }
 
 void minix_write_inode(struct inode * inode)