This commit was manufactured by cvs2svn to create branch 'vserver'.

[linux-2.6.git] / fs / gfs2 / dir.h

diff --git a/fs/gfs2/dir.h b/fs/gfs2/dir.h
new file mode 100644 (file)
index 0000000..48fe890
--- /dev/null
+++ b/fs/gfs2/dir.h
@@ -0,0 +1,62 @@
+/*
+ * Copyright (C) Sistina Software, Inc.  1997-2003 All rights reserved.
+ * Copyright (C) 2004-2006 Red Hat, Inc.  All rights reserved.
+ *
+ * This copyrighted material is made available to anyone wishing to use,
+ * modify, copy, or redistribute it subject to the terms and conditions
+ * of the GNU General Public License version 2.
+ */
+
+#ifndef __DIR_DOT_H__
+#define __DIR_DOT_H__
+
+#include <linux/dcache.h>
+
+struct inode;
+struct gfs2_inode;
+struct gfs2_inum;
+
+int gfs2_dir_search(struct inode *dir, const struct qstr *filename,
+                   struct gfs2_inum_host *inum, unsigned int *type);
+int gfs2_dir_add(struct inode *inode, const struct qstr *filename,
+                const struct gfs2_inum_host *inum, unsigned int type);
+int gfs2_dir_del(struct gfs2_inode *dip, const struct qstr *filename);
+int gfs2_dir_read(struct inode *inode, u64 *offset, void *opaque,
+                 filldir_t filldir);
+int gfs2_dir_mvino(struct gfs2_inode *dip, const struct qstr *filename,
+                  struct gfs2_inum_host *new_inum, unsigned int new_type);
+
+int gfs2_dir_exhash_dealloc(struct gfs2_inode *dip);
+
+int gfs2_diradd_alloc_required(struct inode *dir,
+                              const struct qstr *filename);
+int gfs2_dir_get_new_buffer(struct gfs2_inode *ip, u64 block,
+                           struct buffer_head **bhp);
+
+static inline u32 gfs2_disk_hash(const char *data, int len)
+{
+        return crc32_le((u32)~0, data, len) ^ (u32)~0;
+}
+
+
+static inline void gfs2_str2qstr(struct qstr *name, const char *fname)
+{
+       name->name = fname;
+       name->len = strlen(fname);
+       name->hash = gfs2_disk_hash(name->name, name->len);
+}
+
+/* N.B. This probably ought to take inum & type as args as well */
+static inline void gfs2_qstr2dirent(const struct qstr *name, u16 reclen, struct gfs2_dirent *dent)
+{
+       dent->de_inum.no_addr = cpu_to_be64(0);
+       dent->de_inum.no_formal_ino = cpu_to_be64(0);
+       dent->de_hash = cpu_to_be32(name->hash);
+       dent->de_rec_len = cpu_to_be16(reclen);
+       dent->de_name_len = cpu_to_be16(name->len);
+       dent->de_type = cpu_to_be16(0);
+       memset(dent->__pad, 0, sizeof(dent->__pad));
+       memcpy(dent + 1, name->name, name->len);
+}
+
+#endif /* __DIR_DOT_H__ */