Imported sourcesstart

1 files changed, 161 insertions, 0 deletions

diff --git a/inode.c b/inode.c
new file mode 100644
index 0000000..77040fc
--- /dev/null
+++ b/inode.c
@@ -0,0 +1,161 @@
+/*
+    FUSE: Filesystem in Userspace
+    Copyright (C) 2001  Miklos Szeredi (mszeredi@inf.bme.hu)
+
+    This program can be distributed under the terms of the GNU GPL.
+    See the file COPYING.
+*/
+
+#include "fuse.h"
+#include "fuse_i.h"
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/smp_lock.h>
+#include <linux/sched.h>
+#include <linux/file.h>
+
+#define FUSE_SUPER_MAGIC 0x65735546
+
+static void fuse_read_inode(struct inode *inode)
+{
+	printk(KERN_DEBUG "fuse_read_inode: %li\n", inode->i_ino);
+
+	
+}
+
+static void fuse_put_super(struct super_block *sb)
+{
+	struct fuse_conn *fc = sb->u.generic_sbp;
+
+	printk(KERN_DEBUG "fuse_put_super\n");
+
+	fc->sb = NULL;
+	fuse_release_conn(fc);
+}
+
+static struct super_operations fuse_super_operations = {
+	read_inode:	fuse_read_inode,
+	put_super:	fuse_put_super,
+};
+
+
+static struct fuse_conn *get_conn(struct fuse_mount_data *d)
+{
+	struct fuse_conn *fc = NULL;
+	struct file *file;
+	struct inode *ino;
+
+	printk(KERN_DEBUG "fuse_read_super\n");
+
+	if(d == NULL) {
+		printk("fuse_read_super: Bad mount data\n");
+		return NULL;
+	}
+
+	if(d->version != FUSE_MOUNT_VERSION) {
+		printk("fuse_read_super: Bad mount version: %i\n", d->version);
+		return NULL;
+	}
+
+	file = fget(d->fd);
+	ino = NULL;
+	if(file)
+		ino = file->f_dentry->d_inode;
+	
+	if(!ino || ino->u.generic_ip != proc_fuse_dev) {
+		printk("fuse_read_super: Bad file: %i\n", d->fd);
+		goto out;
+	}
+
+	fc = file->private_data;
+
+  out:
+	fput(file);
+	return fc;
+
+}
+
+static struct super_block *fuse_read_super(struct super_block *sb, 
+					   void *data, int silent)
+{	
+	struct fuse_conn *fc;
+	struct inode *root;
+
+	fc = get_conn(data);
+	if(fc == NULL)
+		goto err;
+
+	if(fc->sb != NULL) {
+		printk("fuse_read_super: file already mounted\n");
+		goto err;
+	}
+
+        sb->u.generic_sbp = fc;
+        sb->s_blocksize = 1024;
+        sb->s_blocksize_bits = 10;
+        sb->s_magic = FUSE_SUPER_MAGIC;
+        sb->s_op = &fuse_super_operations;
+
+	root = iget(sb, 1);
+	if(!root) {
+		printk("fuse_read_super: failed to get root inode\n");
+		goto err;
+	}
+
+	printk(KERN_DEBUG "root inode: %ld/%d\n", root->i_ino, root->i_dev);
+
+	root->i_mode = S_IFDIR;
+	root->i_uid = 0;
+	root->i_gid = 0;
+	root->i_nlink = 2;
+	root->i_size = 0;
+	root->i_blksize = 1024;
+	root->i_blocks = 0;
+	root->i_atime = CURRENT_TIME;
+	root->i_mtime = CURRENT_TIME;
+	root->i_ctime = CURRENT_TIME;
+	fuse_dir_init(root);
+
+	sb->s_root = d_alloc_root(root);
+	if(!sb->s_root) {
+		printk("fuse_read_super: failed to allocate root dentry\n");
+		goto err_iput;
+	}
+
+	fc->sb = sb;
+
+	return sb;
+
+  err_iput:
+	iput(root);
+  err:
+	return NULL;
+}
+
+
+static DECLARE_FSTYPE(fuse_fs_type, "fuse", fuse_read_super, 0);
+
+int fuse_fs_init()
+{
+	int res;
+
+	res = register_filesystem(&fuse_fs_type);
+	if(res)
+		printk("fuse: failed to register filesystem\n");
+
+	return res;
+}
+
+void fuse_fs_cleanup()
+{
+	unregister_filesystem(&fuse_fs_type);
+}
+
+/* 
+ * Local Variables:
+ * indent-tabs-mode: t
+ * c-basic-offset: 8
+ * End:
+ */
+