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/*
* file.c
*
* Copyright (c) 1999 Al Smith
*
* Portions derived from work (c) 1995,1996 Christian Vogelgsang.
*/
#include <linux/efs.h>
static struct file_operations efs_file_operations = {
NULL, /* lseek */
generic_file_read,
NULL, /* write */
NULL, /* readdir */
NULL, /* poll */
NULL, /* ioctl */
generic_file_mmap,
NULL, /* flush */
NULL, /* no special release code */
NULL /* fsync */
};
struct inode_operations efs_file_inode_operations = {
&efs_file_operations,
NULL, /* create */
NULL, /* lookup */
NULL, /* link */
NULL, /* unlink */
NULL, /* symlink */
NULL, /* mkdir */
NULL, /* rmdir */
NULL, /* mknod */
NULL, /* rename */
NULL, /* readlink */
NULL, /* follow_link */
generic_readpage,
NULL, /* writepage */
efs_bmap,
NULL, /* truncate */
NULL /* permission */
};
int efs_bmap(struct inode *inode, efs_block_t block) {
if (block < 0) {
printk("EFS: efs_bmap(): block < 0\n");
return 0;
}
/* are we about to read past the end of a file ? */
if (block > inode->i_blocks) {
#ifdef DEBUG
/* dunno why this happens */
printk("EFS: efs_bmap(): block %d > last block %ld (filesize %ld)\n",
block,
inode->i_blocks,
inode->i_size);
#endif
return 0;
}
return efs_read_block(inode, block);
}
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