From 5d070483acf527ca20910c83d4735e1f99c32e24 Mon Sep 17 00:00:00 2001
From: todd stecher <todd.stecher@gmail.com>
Date: Thu, 29 Jan 2009 08:08:35 -0800
Subject: s3 OneFS: Fake Timestamps

This checkin enables setting arbitrary timestamps on files matching
the pattern stored in smb.conf. This was a customer request for a
specific workflow.

Changes include:
1) configuration state machine to avoid tons of string comparisons on
   each and every stat.

2) Code to adjust post-stat() times to match time now, or sloptime +
   time now.
---
 source3/modules/vfs_onefs.c | 114 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 114 insertions(+)

(limited to 'source3/modules/vfs_onefs.c')

diff --git a/source3/modules/vfs_onefs.c b/source3/modules/vfs_onefs.c
index e2f272aa11..1f11f691a4 100644
--- a/source3/modules/vfs_onefs.c
+++ b/source3/modules/vfs_onefs.c
@@ -24,6 +24,118 @@
 #undef DBGC_CLASS
 #define DBGC_CLASS DBGC_VFS
 
+#define ONEFS_DATA_FASTBUF	10
+
+struct onefs_vfs_config share_config[ONEFS_DATA_FASTBUF];
+struct onefs_vfs_config *pshare_config;
+
+static void onefs_load_faketimestamp_config(struct vfs_handle_struct *handle,
+					    struct onefs_vfs_config *cfg)
+{
+	const char **parm;
+	int snum = SNUM(handle->conn);
+
+	parm = lp_parm_string_list(snum, PARM_ONEFS_TYPE, PARM_ATIME_NOW,
+				   NULL);
+
+	if (parm) {
+		cfg->init_flags |= ONEFS_VFS_CONFIG_FAKETIMESTAMPS;
+		set_namearray(&cfg->atime_now_list,*parm);
+	}
+
+	parm = lp_parm_string_list(snum, PARM_ONEFS_TYPE, PARM_CTIME_NOW,
+				   NULL);
+
+	if (parm) {
+		cfg->init_flags |= ONEFS_VFS_CONFIG_FAKETIMESTAMPS;
+		set_namearray(&cfg->ctime_now_list,*parm);
+	}
+
+	parm = lp_parm_string_list(snum, PARM_ONEFS_TYPE, PARM_MTIME_NOW,
+				   NULL);
+
+	if (parm) {
+		cfg->init_flags |= ONEFS_VFS_CONFIG_FAKETIMESTAMPS;
+		set_namearray(&cfg->mtime_now_list,*parm);
+	}
+
+	parm = lp_parm_string_list(snum, PARM_ONEFS_TYPE, PARM_ATIME_STATIC,
+				   NULL);
+
+	if (parm) {
+		cfg->init_flags |= ONEFS_VFS_CONFIG_FAKETIMESTAMPS;
+		set_namearray(&cfg->atime_static_list,*parm);
+	}
+
+	parm = lp_parm_string_list(snum, PARM_ONEFS_TYPE, PARM_MTIME_STATIC,
+				   NULL);
+
+	if (parm) {
+		cfg->init_flags |= ONEFS_VFS_CONFIG_FAKETIMESTAMPS;
+		set_namearray(&cfg->mtime_static_list,*parm);
+	}
+
+	cfg->atime_slop = lp_parm_int(snum, PARM_ONEFS_TYPE, PARM_ATIME_SLOP,0);
+	cfg->ctime_slop = lp_parm_int(snum, PARM_ONEFS_TYPE, PARM_CTIME_SLOP,0);
+	cfg->mtime_slop = lp_parm_int(snum, PARM_ONEFS_TYPE, PARM_MTIME_SLOP,0);
+}
+
+
+static int onefs_load_config(struct vfs_handle_struct *handle)
+{
+	int snum = SNUM(handle->conn);
+	int share_count = lp_numservices();
+
+	if (!pshare_config) {
+
+		if (share_count <= ONEFS_DATA_FASTBUF)
+			pshare_config = share_config;
+		else {
+			pshare_config = SMB_MALLOC_ARRAY(struct onefs_vfs_config,
+							 share_count);
+			if (!pshare_config) {
+				errno = ENOMEM;
+				return -1;
+			}
+
+			memset(pshare_config, 0,
+			    (sizeof(struct onefs_vfs_config) * share_count));
+		}
+	}
+
+	if ((pshare_config[snum].init_flags &
+		ONEFS_VFS_CONFIG_INITIALIZED) == 0) {
+			pshare_config[snum].init_flags =
+			    ONEFS_VFS_CONFIG_INITIALIZED;
+			onefs_load_faketimestamp_config(handle,
+						        &pshare_config[snum]);
+	}
+
+	return 0;
+}
+
+bool onefs_get_config(int snum, int config_type,
+		      struct onefs_vfs_config *cfg)
+{
+	if (share_config[snum].init_flags & config_type)
+		*cfg = share_config[snum];
+	else
+		return false;
+
+	return true;
+}
+
+static int onefs_connect(struct vfs_handle_struct *handle, const char *service,
+			 const char *user)
+{
+	int ret = onefs_load_config(handle);
+
+	if (ret)
+		return ret;
+
+	return SMB_VFS_NEXT_CONNECT(handle, service, user);
+}
+
 static int onefs_mkdir(vfs_handle_struct *handle, const char *path,
 		       mode_t mode)
 {
@@ -130,6 +242,8 @@ static uint32_t onefs_fs_capabilities(struct vfs_handle_struct *handle)
 }
 
 static vfs_op_tuple onefs_ops[] = {
+	{SMB_VFS_OP(onefs_connect), SMB_VFS_OP_CONNECT,
+	 SMB_VFS_LAYER_TRANSPARENT},
 	{SMB_VFS_OP(onefs_fs_capabilities), SMB_VFS_OP_FS_CAPABILITIES,
 	 SMB_VFS_LAYER_TRANSPARENT},
 	{SMB_VFS_OP(onefs_mkdir), SMB_VFS_OP_MKDIR,
-- 
cgit