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/*
* 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)
{
long phys = inode->iu_sblock + block;
if (!create || phys <= inode->iu_eblock) {
bh_result->b_dev = inode->i_dev;
bh_result->b_blocknr = phys;
bh_result->b_state |= (1UL << BH_Mapped);
return 0;
}
/* no support for file migration, working on it */
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,
truncate: NULL,
permission: NULL,
revalidate: NULL
};
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