Imported sourcesstart

1 files changed, 133 insertions, 0 deletions

diff --git a/dev.c b/dev.c
new file mode 100644
index 0000000..c7dd247
--- /dev/null
+++ b/dev.c
@@ -0,0 +1,133 @@
+/*
+    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_i.h"
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/smp_lock.h>
+#include <linux/poll.h>
+#include <linux/file.h>
+#include <linux/proc_fs.h>
+
+static struct proc_dir_entry *proc_fs_fuse;
+struct proc_dir_entry *proc_fuse_dev;
+
+static ssize_t fuse_dev_read(struct file *file, char *buf, size_t nbytes,
+			     loff_t *off)
+{
+	printk(KERN_DEBUG "fuse_dev_read\n");
+	return 0;
+}
+
+static ssize_t fuse_dev_write(struct file *file, const char *buf,
+				size_t nbytes, loff_t *off)
+{
+	printk(KERN_DEBUG "fuse_dev_write <%.*s>\n", (int) nbytes, buf);
+	return nbytes;
+}
+
+
+static unsigned int fuse_dev_poll(struct file *file, poll_table *wait)
+{
+	printk(KERN_DEBUG "fuse_dev_poll\n");
+	return 0;
+}
+
+static int fuse_dev_open(struct inode *inode, struct file *file)
+{
+	int res;
+	struct fuse_conn *fc;
+
+	printk(KERN_DEBUG "fuse_dev_open\n");
+
+	res = -ENOMEM;
+	fc = kmalloc(sizeof(*fc), GFP_KERNEL);
+	if(!fc)
+		goto out;
+	
+	fc->sb = NULL;
+	fc->file = file;
+	
+	lock_kernel();
+	file->private_data = fc;
+	unlock_kernel();
+	res = 0;
+	
+  out:
+	return res;
+}
+
+static int fuse_dev_release(struct inode *inode, struct file *file)
+{
+	struct fuse_conn *fc = file->private_data;
+
+	printk(KERN_DEBUG "fuse_dev_release\n");
+
+	lock_kernel();
+	fc->file = NULL;
+	fuse_release_conn(fc);
+	unlock_kernel();
+	return 0;
+}
+
+static struct file_operations fuse_dev_operations = {
+	owner:		THIS_MODULE,
+	read:		fuse_dev_read,
+	write:		fuse_dev_write,
+	poll:		fuse_dev_poll,
+	open:		fuse_dev_open,
+	release:	fuse_dev_release,
+};
+
+int fuse_dev_init()
+{
+	int res;
+
+	proc_fs_fuse = NULL;
+	proc_fuse_dev = NULL;
+
+	res = -EIO;
+	proc_fs_fuse = proc_mkdir("fuse", proc_root_fs);
+	if(!proc_fs_fuse) {
+		printk("fuse: failed to create directory in /proc/fs\n");
+		goto err;
+	}
+
+	proc_fs_fuse->owner = THIS_MODULE;
+	proc_fuse_dev = create_proc_entry("dev", S_IFSOCK | S_IRUGO | S_IWUGO,
+					  proc_fs_fuse);
+	if(!proc_fuse_dev) {
+		printk("fuse: failed to create entry in /proc/fs/fuse\n");
+		goto err;
+	}
+
+	proc_fuse_dev->proc_fops = &fuse_dev_operations;
+
+	return 0;
+
+  err:
+	fuse_dev_cleanup();
+	return res;
+
+}
+
+void fuse_dev_cleanup()
+{
+	if(proc_fs_fuse) {
+		remove_proc_entry("dev", proc_fs_fuse);
+		remove_proc_entry("fuse", proc_root_fs);
+	}
+}
+
+/* 
+ * Local Variables:
+ * indent-tabs-mode: t
+ * c-basic-offset: 8
+ * End:
+ */