Main code for the ext2fs filesystem. Please refer to the COPYRIGHT.INFO

file for GPL restrictions.  This code was ported to the BSD platform
by Godmar Back <gback@facility.cs.utah.edu> and specifically to FreeBSD
by John Dyson.  This code is still green and should be used with caution.
Additional changes to UFS necessary to make this code work will be commited
seperately.
Submitted by:	Godmar Back <gback@facility.cs.utah.edu>
Obtained from:	Lites/Mach4

1 files changed, 140 insertions, 0 deletions

diff --git a/sys/gnu/fs/ext2fs/ext2_extern.h b/sys/gnu/fs/ext2fs/ext2_extern.h
new file mode 100644
index 0000000..92ec042
--- /dev/null
+++ b/sys/gnu/fs/ext2fs/ext2_extern.h
@@ -0,0 +1,140 @@
+/*
+ *  modified for EXT2FS support in Lites 1.1
+ *
+ *  Aug 1995, Godmar Back (gback@cs.utah.edu)
+ *  University of Utah, Department of Computer Science
+ */
+/*-
+ * Copyright (c) 1991, 1993, 1994
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	@(#)ffs_extern.h	8.3 (Berkeley) 4/16/94
+ */
+
+struct buf;
+struct fid;
+struct fs;
+struct inode;
+struct mount;
+struct nameidata;
+struct proc;
+struct statfs;
+struct timeval;
+struct ucred;
+struct uio;
+struct vnode;
+struct mbuf;
+struct dinode;
+struct ext2_group_desc;
+struct ext2_inode;
+
+__BEGIN_DECLS
+int	ext2_alloc __P((struct inode *,
+	    daddr_t, daddr_t, int, struct ucred *, daddr_t *));
+int	ext2_balloc __P((struct inode *,
+	    daddr_t, int, struct ucred *, struct buf **, int));
+int	ext2_blkatoff __P((struct vop_blkatoff_args *));
+void	ext2_blkfree __P((struct inode *, daddr_t, long));
+daddr_t	ext2_blkpref __P((struct inode *, daddr_t, int, daddr_t *, daddr_t));
+int	ext2_bmap __P((struct vop_bmap_args *));
+int	ext2_fhtovp __P((struct mount *, struct fid *, struct mbuf *,
+	    struct vnode **, int *, struct ucred **));
+int	ext2_fsync __P((struct vop_fsync_args *));
+int	ext2_init __P((void));
+int	ext2_mount __P((struct mount *,
+	    char *, caddr_t, struct nameidata *, struct proc *));
+int	ext2_mountfs __P((struct vnode *, struct mount *, struct proc *));
+int	ext2_mountroot __P((void));
+int	ext2_read __P((struct vop_read_args *));
+int	ext2_reallocblks __P((struct vop_reallocblks_args *));
+int	ext2_reclaim __P((struct vop_reclaim_args *));
+void	ext2_setblock __P((struct ext2_sb_info *, u_char *, daddr_t));
+int	ext2_statfs __P((struct mount *, struct statfs *, struct proc *));
+int	ext2_sync __P((struct mount *, int, struct ucred *, struct proc *));
+int	ext2_truncate __P((struct vop_truncate_args *));
+int	ext2_unmount __P((struct mount *, int, struct proc *));
+int	ext2_update __P((struct vop_update_args *));
+int	ext2_valloc __P((struct vop_valloc_args *));
+int	ext2_vfree __P((struct vop_vfree_args *));
+int	ext2_vget __P((struct mount *, ino_t, struct vnode **));
+int	ext2_vptofh __P((struct vnode *, struct fid *));
+int	ext2_write __P((struct vop_write_args *));
+int 	ext2_lookup __P((struct vop_lookup_args *));
+int 	ext2_readdir __P((struct vop_readdir_args *));
+void	ext2_print_dinode __P((struct dinode *));
+void	ext2_print_inode __P((struct inode *));
+int	ext2_direnter __P((struct inode *, 
+		struct vnode *, struct componentname *));
+int	ext2_dirremove __P((struct vnode *, struct componentname *));
+int	ext2_dirrewrite __P((struct inode *,
+		struct inode *, struct componentname *));
+int	ext2_dirempty __P((struct inode *, ino_t, struct ucred *));
+int	ext2_checkpath __P((struct inode *, struct inode *, struct ucred *));
+struct  ext2_group_desc * get_group_desc __P((struct mount * , 
+		unsigned int , struct buf ** ));
+void	ext2_discard_prealloc __P((struct inode *));
+int	ext2_inactive __P((struct vop_inactive_args *));
+int 	ll_w_block __P((struct buf *, int ));
+int	ext2_di2ei __P((struct dinode *di, struct ext2_inode *ei));
+int	ext2_ei2di __P((struct ext2_inode *ei, struct dinode *di));
+int	ext2_new_block __P ((struct mount * mp, unsigned long goal,
+			    long * prealloc_count,
+			    long * prealloc_block));
+ino_t	ext2_new_inode __P ((const struct inode * dir, int mode));
+void	ext2_free_blocks (struct mount * mp, unsigned long block,
+		       unsigned long count);
+void	ext2_free_inode (struct inode * inode);
+int	ext2_flushfiles __P((struct mount *mp, int flags, struct proc *p));
+int	ext2_reload __P((struct mount *mountp, struct ucred *cred,
+			struct proc *p));
+
+#if !defined(__FreeBSD__)
+int	bwrite();		/* FFS needs a bwrite routine.  XXX */
+#endif
+
+/* this macros allows some of the ufs code to distinguish between
+ * an EXT2 and a non-ext2(FFS/LFS) vnode.
+ */
+#define  IS_EXT2_VNODE(vp) (vp->v_mount->mnt_stat.f_type == MOUNT_EXT2FS)
+
+#ifdef DIAGNOSTIC
+void	ext2_checkoverlap __P((struct buf *, struct inode *));
+#endif
+__END_DECLS
+
+extern int (**ext2_vnodeop_p)();
+extern int (**ext2_specop_p)();
+#ifdef FIFO
+extern int (**ext2_fifoop_p)();
+#define EXT2_FIFOOPS ext2_fifoop_p
+#else
+#define EXT2_FIFOOPS NULL
+#endif