patch-2.3.25 linux/fs/bfs/file.c

• Lines: 77
• Date: Thu Oct 28 14:45:16 1999
• Orig file: v2.3.24/linux/fs/bfs/file.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.3.24/linux/fs/bfs/file.c linux/fs/bfs/file.c
@@ -0,0 +1,76 @@
+/*
+ *	fs/bfs/file.c
+ *	BFS file operations.
+ *	Copyright (C) 1999 Tigran Aivazian <tigran@ocston.org>
+ */
+
+#include <linux/fs.h>
+#include <linux/bfs_fs.h>
+#include "bfs_defs.h"
+
+#undef DEBUG
+
+#ifdef DEBUG
+#define DBG(x...)	printk(x)
+#else
+#define DBG(x...)
+#endif
+
+static ssize_t bfs_file_write(struct file * f, const char * buf, size_t count, loff_t *ppos)
+{
+	return generic_file_write(f, buf, count, ppos, block_write_partial_page);
+}
+
+static struct file_operations bfs_file_operations = {
+	llseek:			NULL,
+	read:			generic_file_read,
+	write:			bfs_file_write,
+	readdir:		NULL,
+	poll:			NULL,
+	ioctl:			NULL,
+	mmap:			generic_file_mmap,
+	open:			NULL,
+	flush:			NULL,
+	release:		NULL,
+	fsync:			NULL,
+	fasync:			NULL,
+	check_media_change:	NULL,
+	revalidate:		NULL,
+};
+
+static int bfs_get_block(struct inode * inode, long block, 
+	struct buffer_head * bh_result, int create)
+{
+	if (!create) {
+		bh_result->b_dev = inode->i_dev;
+		bh_result->b_blocknr = inode->iu_sblock + block;
+		bh_result->b_state |= (1UL << BH_Mapped);
+		return 0;
+	} else 
+		DBG(KERN_ERR "BFS-fs: %s(create=%d) impossible!\n", 
+			__FUNCTION__, create);
+	return -EIO;
+}
+
+struct inode_operations bfs_file_inops = {
+	default_file_ops:	&bfs_file_operations,
+	create:			NULL,
+	lookup:			NULL,
+	link:			NULL,
+	unlink:			NULL,
+	symlink:		NULL,
+	mkdir:			NULL,
+	rmdir:			NULL,
+	mknod:			NULL,
+	rename:			NULL,
+	readlink:		NULL,
+	follow_link:		NULL,
+	get_block:		bfs_get_block,	
+	readpage:		block_read_full_page,
+	writepage:		block_write_full_page,
+	flushpage:		block_flushpage,
+	truncate:		NULL,
+	permission:		NULL,
+	smap:			NULL,
+	revalidate:		NULL
+};