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/*
* * Intermezzo. (C) 1998 Peter J. Braam
* */
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/fs.h>
#include <linux/slab.h>
#include <linux/vmalloc.h>
#include <linux/stat.h>
#include <linux/errno.h>
#include <linux/locks.h>
#include <asm/segment.h>
#include <asm/uaccess.h>
#include <linux/string.h>
#if 0
/* XFS support not there yet... */
#ifdef CONFIG_FS_XFS
#include <linux/xfs_fs.h>
#endif
#include <linux/intermezzo_fs.h>
#include <linux/intermezzo_upcall.h>
#include <linux/intermezzo_psdev.h>
#include <linux/intermezzo_kml.h>
#include <linux/intermezzo_journal.h>
#if 0
/* XFS has journalling, but these functions do nothing yet... */
static unsigned long presto_xfs_freespace(struct presto_file_set *fset,
struct super_block *sb)
{
#if 0
vfs_t *vfsp = LINVFS_GET_VFS(sb);
struct statvfs_t stat;
bhv_desc_t *bdp;
unsigned long avail;
int rc;
VFS_STATVFS(vfsp, &stat, NULL, rc);
avail = statp.f_bfree;
return sbp->sb_fdblocks;;
#endif
return 0x0fffffff;
}
/* start the filesystem journal operations */
static void *
presto_xfs_trans_start(struct presto_file_set *fset,
struct inode *inode, int op)
{
int xfs_op;
/* do a free blocks check as in journal_ext3? does anything protect
* the space in that case or can it disappear out from under us
* anyway? */
/* copied from xfs_trans.h, skipping header maze for now */
#define XFS_TRANS_SETATTR_NOT_SIZE 1
#define XFS_TRANS_SETATTR_SIZE 2
#define XFS_TRANS_INACTIVE 3
#define XFS_TRANS_CREATE 4
#define XFS_TRANS_CREATE_TRUNC 5
#define XFS_TRANS_TRUNCATE_FILE 6
#define XFS_TRANS_REMOVE 7
#define XFS_TRANS_LINK 8
#define XFS_TRANS_RENAME 9
#define XFS_TRANS_MKDIR 10
#define XFS_TRANS_RMDIR 11
#define XFS_TRANS_SYMLINK 12
/* map the op onto the values for XFS so it can do reservation. if
* we don't have enough info to differentiate between e.g. setattr
* with or without size, what do we do? will it adjust? */
switch (op) {
case PRESTO_OP_SETATTR:
/* or XFS_TRANS_SETATTR_NOT_SIZE? */
xfs_op = XFS_TRANS_SETATTR_SIZE;
break;
case PRESTO_OP_CREATE:
/* or CREATE_TRUNC? */
xfs_op = XFS_TRANS_CREATE;
break;
case PRESTO_OP_LINK:
xfs_op = XFS_TRANS_LINK;
break;
case PRESTO_OP_UNLINK:
xfs_op = XFS_TRANS_REMOVE;
break;
case PRESTO_OP_SYMLINK:
xfs_op = XFS_TRANS_SYMLINK;
break;
case PRESTO_OP_MKDIR:
xfs_op = XFS_TRANS_MKDIR;
break;
case PRESTO_OP_RMDIR:
xfs_op = XFS_TRANS_RMDIR;
break;
case PRESTO_OP_MKNOD:
/* XXX can't find an analog for mknod? */
xfs_op = XFS_TRANS_CREATE;
break;
case PRESTO_OP_RENAME:
xfs_op = XFS_TRANS_RENAME;
break;
default:
CDEBUG(D_JOURNAL, "invalid operation %d for journal\n", op);
return NULL;
}
return xfs_trans_start(inode, xfs_op);
}
static void presto_xfs_trans_commit(struct presto_file_set *fset, void *handle)
{
/* assert (handle == current->j_handle) */
xfs_trans_stop(handle);
}
void presto_xfs_journal_file_data(struct inode *inode)
{
return;
}
struct journal_ops presto_xfs_journal_ops = {
tr_avail: presto_xfs_freespace,
tr_start: presto_xfs_trans_start,
tr_commit: presto_xfs_trans_commit,
tr_journal_data: presto_xfs_journal_file_data
};
#endif /* CONFIG_XFS_FS */
#endif /* 0 */
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