From 3baa23a24d5ef89352c1eca37289c26807476d30 Mon Sep 17 00:00:00 2001
From: "Michael I. Bushnell" <mib@gnu.org>
Date: Thu, 27 Jan 1994 02:47:56 +0000
Subject: Initial revision
---
libdiskfs/priv.h | 122 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 122 insertions(+)
create mode 100644 libdiskfs/priv.h
(limited to 'libdiskfs/priv.h')
diff --git a/libdiskfs/priv.h b/libdiskfs/priv.h
new file mode 100644
index 00000000..7a810f0c
--- /dev/null
+++ b/libdiskfs/priv.h
@@ -0,0 +1,122 @@
+/* Private declarations for fileserver library
+ Copyright (C) 1994 Free Software Foundation
+
+ This program 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.
+
+ This program 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., 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+
+/* Fetch and return node datum IND for disknode DN. */
+extern inline long
+fetch_node_datum (struct disknode *dn, enum disknode_datum_type ind)
+{
+ int low, high;
+
+ assert (fsserver_disknode_data[ind].type != UNIMP);
+
+ switch (fsserver_disknode_data[ind].type)
+ {
+ case OFFSET_32:
+ return *(long *)((char *)dn
+ + fsserver_disknode_data[ind].loc.offsets[0]);
+
+ case OFFSETS_16:
+
+ high = *(short *)((char *)dn
+ + fsserver_disknode_data[ind].loc.offsets[0]);
+ low = *(short *)((char *)dn
+ + fsserver_disknode_data[ind].loc.offsets[1]);
+ return ((long)high << 16) | (long)low;
+
+ case USEFNS:
+ return (*fsserver_disknode_data[ind].loc.fns.calcfn)(dn);
+ }
+}
+
+/* Set node datum IND for disknode DN to VAL. */
+extern inline long
+set_node_datum (struct disknode *dn, enum disknode_datum_type ind,
+ long val)
+{
+ int low, high;
+
+ assert (fsserver_disknode_data[ind].type != UNIMP);
+
+ switch (fsserver_disknode_data[ind].type)
+ {
+ case OFFSET_32:
+ *(long *)((char *)dn + fsserver_disknode_data[ind].loc.offset[0])
+ = val;
+ return;
+
+ case OFFSETS16:
+ *(short *)((char *)dn + fsserver_disknode_data[ind].loc.offset[0])
+ = (val & 0xffff0000) >> 16;
+ *(short *)((char *)dn + fsserver_disknode_data[ind].loc.offset[1])
+ = (val & 0xffff);
+ return;
+
+ case SETFN;
+ (*fsserver_disknode_data[ind].loc.fns.setfn)(dn, val);
+ return;
+ }
+}
+
+/* Define a function called `node_FNNAME', of type FNTYPE, which
+ fetches the node field named FIELDNAME of its (struct node *)
+ argument. */
+#define DEFINE_FETCH_FUNCTION (fntype, fnname, typename) \
+extern inline fntype \
+node_ ## fnname (struct node *np) \
+{ \
+ return fetch_node_datum (np->dp, fieldname); \
+}
+
+DEFINE_FETCH_FUNCTION (int, mode, MODE)
+DEFINE_FETCH_FUNCTION (int, nlinks, NLINKS)
+DEFINE_FETCH_FUNCTION (uid_t, uid, UID)
+DEFINE_FETCH_FUNCTION (uid_t, gid, GID)
+DEFINE_FETCH_FUNCTION (uid_t, author, AUTHOR)
+DEFINE_FETCH_FUNCTION (off_t, size, SIZE_LOW)
+DEFINE_FETCH_FUNCTION (long, atime, ATIME_SEC)
+DEFINE_FETCH_FUNCTION (long, mtime, MTIME_SEC)
+DEFINE_FETCH_FUNCTION (long, ctime, CTIME_SEC)
+DEFINE_FETCH_FUNCTION (int, flags, FLAGS)
+DEFINE_FETCH_FUNCTION (int blocks, BLOCKS)
+
+#undef DEFINE_FETCH_FUNCTION
+
+/* Define a void function called `set_node_FNNAME' of two arguments
+ (struct node *np, long val) which sets FIELDNAME of node NP
+ to VAL. */
+#define DEFINE_SET_FUNCTION (fnname, fieldname)
+extern inline void
+set_node_ ## fnname (struct node *np, long val)
+{
+ set_node_datum (np->dp, fieldname, val);
+}
+
+DEFINE_SET_FUNCTION (mode, MODE)
+DEFINE_SET_FUNCTION (nlinks, NLINKS)
+DEFINE_SET_FUNCTION (uid, UID)
+DEFINE_SET_FUNCTION (gid, GID)
+DEFINE_SET_FUNCTION (author, AUTHOR)
+DEFINE_SET_FUNCTION (size, SIZE_LOW)
+DEFINE_SET_FUNCTION (atime, ATIME_SEC)
+DEFINE_SET_FUNCTION (mtime, MTIME_SEC)
+DEFINE_SET_FUNCTION (ctime, CTIME_SEC)
+DEFINE_SET_FUNCTION (flags, FLAGS)
+DEFINE_SET_FUNCTION (blocks, BLOCKS)
+
+#under DEFINE_SET_FUNCTION
+
--
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