From 5bdb8b472ce9c8072d4ffade4075f9ec17ae3819 Mon Sep 17 00:00:00 2001
From: Jeremy Allison <jra@samba.org>
Date: Tue, 13 Jul 2010 09:30:35 -0700
Subject: Revert "Remove the global char *LastDir."

Volker pointed out I'd missed the "last directory" cache
part of this code. Return us to caching the directory we're
in (reduces sys call load).

Mea maxima culpa.

Jeremy.

This reverts commit 2f30aea3324f32f9b8555e961256fc1280da2871.
---
 source3/smbd/globals.c |  1 +
 source3/smbd/globals.h |  1 +
 source3/smbd/vfs.c     | 21 ++++++++++++++++++++-
 3 files changed, 22 insertions(+), 1 deletion(-)

(limited to 'source3/smbd')

diff --git a/source3/smbd/globals.c b/source3/smbd/globals.c
index 5df835d1aa..324d13a239 100644
--- a/source3/smbd/globals.c
+++ b/source3/smbd/globals.c
@@ -105,6 +105,7 @@ int conn_ctx_stack_ndx = 0;
 
 struct vfs_init_function_entry *backends = NULL;
 char *sparse_buf = NULL;
+char *LastDir = NULL;
 
 /* Current number of oplocks we have outstanding. */
 int32_t exclusive_oplocks_open = 0;
diff --git a/source3/smbd/globals.h b/source3/smbd/globals.h
index 9d9688f8a9..c618efad05 100644
--- a/source3/smbd/globals.h
+++ b/source3/smbd/globals.h
@@ -115,6 +115,7 @@ extern int conn_ctx_stack_ndx;
 struct vfs_init_function_entry;
 extern struct vfs_init_function_entry *backends;
 extern char *sparse_buf;
+extern char *LastDir;
 
 /* Current number of oplocks we have outstanding. */
 extern int32_t exclusive_oplocks_open;
diff --git a/source3/smbd/vfs.c b/source3/smbd/vfs.c
index 7df51cff95..d4e9f02a69 100644
--- a/source3/smbd/vfs.c
+++ b/source3/smbd/vfs.c
@@ -707,7 +707,26 @@ const char *vfs_readdirname(connection_struct *conn, void *p,
 
 int vfs_ChDir(connection_struct *conn, const char *path)
 {
-	return SMB_VFS_CHDIR(conn,path);
+	int res;
+
+	if (!LastDir) {
+		LastDir = SMB_STRDUP("");
+	}
+
+	if (strcsequal(path,"."))
+		return(0);
+
+	if (*path == '/' && strcsequal(LastDir,path))
+		return(0);
+
+	DEBUG(4,("vfs_ChDir to %s\n",path));
+
+	res = SMB_VFS_CHDIR(conn,path);
+	if (!res) {
+		SAFE_FREE(LastDir);
+		LastDir = SMB_STRDUP(path);
+	}
+	return(res);
 }
 
 /*******************************************************************
-- 
cgit