1 files changed, 82 insertions, 0 deletions
diff --git a/source3/lib/file_id.c b/source3/lib/file_id.c
new file mode 100644
index 0000000..545437a
--- /dev/null
+++ b/source3/lib/file_id.c
@@ -0,0 +1,82 @@
+/*
+   Unix SMB/CIFS implementation.
+
+   file_id structure handling
+
+   Copyright (C) Andrew Tridgell 2007
+
+   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 3 of the License, 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, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "includes.h"
+#include "lib/file_id.h"
+
+/*
+  return True if two file_id structures are equal
+ */
+bool file_id_equal(const struct file_id *id1, const struct file_id *id2)
+{
+	return id1->inode == id2->inode && id1->devid == id2->devid &&
+	    id1->extid == id2->extid;
+}
+
+char *file_id_str_buf(struct file_id fid, struct file_id_buf *dst)
+{
+	snprintf(dst->buf,
+		 sizeof(dst->buf),
+		 "%"PRIu64":%"PRIu64":%"PRIu64,
+		 fid.devid,
+		 fid.inode,
+		 fid.extid);
+	return dst->buf;
+}
+
+/*
+  push a 16 byte version of a file id into a buffer.  This ignores the extid
+  and is needed when dev/inodes are stored in persistent storage (tdbs).
+ */
+void push_file_id_16(char *buf, const struct file_id *id)
+{
+	SIVAL(buf,  0, id->devid&0xFFFFFFFF);
+	SIVAL(buf,  4, id->devid>>32);
+	SIVAL(buf,  8, id->inode&0xFFFFFFFF);
+	SIVAL(buf, 12, id->inode>>32);
+}
+
+/*
+  push a 24 byte version of a file id into a buffer
+ */
+void push_file_id_24(char *buf, const struct file_id *id)
+{
+	SIVAL(buf,  0, id->devid&0xFFFFFFFF);
+	SIVAL(buf,  4, id->devid>>32);
+	SIVAL(buf,  8, id->inode&0xFFFFFFFF);
+	SIVAL(buf, 12, id->inode>>32);
+	SIVAL(buf, 16, id->extid&0xFFFFFFFF);
+	SIVAL(buf, 20, id->extid>>32);
+}
+
+/*
+  pull a 24 byte version of a file id from a buffer
+ */
+void pull_file_id_24(const char *buf, struct file_id *id)
+{
+	ZERO_STRUCTP(id);
+	id->devid  = IVAL(buf,  0);
+	id->devid |= ((uint64_t)IVAL(buf,4))<<32;
+	id->inode  = IVAL(buf,  8);
+	id->inode |= ((uint64_t)IVAL(buf,12))<<32;
+	id->extid  = IVAL(buf,  16);
+	id->extid |= ((uint64_t)IVAL(buf,20))<<32;
+}