Initial check-in.

1 files changed, 121 insertions, 0 deletions

diff --git a/fatfs/fatfs.h b/fatfs/fatfs.h
new file mode 100644
index 00000000..f46695ba
--- /dev/null
+++ b/fatfs/fatfs.h
@@ -0,0 +1,121 @@
+/* fatfs.h - Interface for fatfs.
+   Copyright (C) 1997, 1999, 2002 Free Software Foundation, Inc.
+   Written by Thomas Bushnell, n/BSG and Marcus Brinkmann.
+
+   This file is part of the GNU Hurd.
+
+   The GNU Hurd is free software; you can redistribute it and/or modify it
+   under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   The GNU Hurd is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA. */
+
+#include <sys/types.h>
+#include <sys/mman.h>
+#include <hurd/diskfs.h>
+#include <hurd/diskfs-pager.h>
+#include <hurd/store.h>
+
+#include "fat.h"
+#include "virt-inode.h"
+
+/* There is no such thing as an inode in this format, all such information
+   being recorded in the directory entry.  So we report inode numbers as
+   the start cluster number of the file. When messing around with the
+   directory entry, hold the DIRENT_LOCK.  */
+
+struct disknode
+{
+  cluster_t start_cluster;
+
+  /* Links on hash list.  */
+  struct node *hnext, **hprevp;
+
+  /* The inode as returned by virtual inode management routines.  */
+  inode_t inode;
+
+  struct rwlock dirent_lock;
+    
+  char *link_target;            /* For S_ISLNK.  */
+
+  size_t translen;
+  char *translator;
+
+  /* Lock to hold while fiddling with this inode's block allocation
+     info.  */
+  struct rwlock alloc_lock;
+  /* Lock to hold while extending this inode's block allocation info.
+     Hold only if you hold readers alloc_lock, then you don't need to
+     hold it if you hold writers alloc_lock already.  */
+  spin_lock_t chain_extension_lock;
+  struct cluster_chain *first;
+  struct cluster_chain *last;
+  cluster_t length_of_chain;
+  int chain_complete;
+
+  /* This file's pager.  */
+  struct pager *pager;
+
+  /* Index to start a directory lookup at.  */
+  int dir_idx;
+};
+
+struct user_pager_info
+{
+  struct node *node;
+  enum pager_type
+  {
+    FAT,
+    FILE_DATA,
+  } type;
+  vm_prot_t max_prot;
+};
+
+/* The physical media.  */
+extern struct store *store;
+
+/* The UID and GID for all files in the filesystem.  */
+extern uid_t fs_uid;
+extern gid_t fs_gid;
+
+/* Mapped image of the FAT.  */
+extern void *fat_image;
+
+/* Handy source of zeroes.  */
+extern vm_address_t zerocluster;
+
+extern struct dirrect dr_root_node;
+
+
+#define round_cluster(offs)					\
+  ((((offs) + bytes_per_cluster - 1)				\
+    >> log2_bytes_per_cluster) << log2_bytes_per_cluster)
+
+#define fat_first_cluster_byte(cluster) \
+ (first_data_byte + ((cluster - 2) << log2_bytes_per_cluster))
+
+void drop_pager_softrefs (struct node *);
+void allow_pager_softrefs (struct node *);
+void create_fat_pager (void);
+
+void flush_node_pager (struct node *node);
+
+void write_all_disknodes ();
+
+struct node *ifind (ino_t inum);
+
+error_t fat_get_next_cluster (cluster_t cluster, cluster_t *next_cluster);
+void fat_to_unix_filename (const char *, char *);
+
+error_t diskfs_cached_lookup_in_dirbuf (int cache_id, struct node **npp,
+					vm_address_t buf);
+void refresh_node_stats (void);
+