Add "store create time" parameter (docs to follow)

that stores the create time in the user.DosTimestamps EA.
Jeremy.

5 files changed, 106 insertions, 13 deletions

diff --git a/source3/smbd/dosmode.c b/source3/smbd/dosmode.c
index f4803cb68d..e9e92ada20 100644
--- a/source3/smbd/dosmode.c
+++ b/source3/smbd/dosmode.c
@@ -853,20 +853,103 @@ bool update_write_time(struct files_struct *fsp)
 }
 
 /******************************************************************
- Return a create time (may look at EA in future).
+ Set a create time EA.
 ******************************************************************/
 
-struct timespec get_create_timespec(struct files_struct *fsp,
+NTSTATUS set_create_timespec_ea(connection_struct *conn,
+				struct files_struct *fsp,
+                                const struct smb_filename *smb_fname,
+				struct timespec create_time)
+{
+	int ret;
+	char buf[8];
+
+	if (!lp_store_create_time(SNUM(conn))) {
+		return NT_STATUS_OK;
+	}
+
+	put_long_date_timespec(buf, create_time);
+	if (fsp && fsp->fh->fd != -1) {
+		ret = SMB_VFS_FSETXATTR(fsp,
+				SAMBA_XATTR_DOSTIMESTAMPS,
+				buf,
+				sizeof(buf),
+				0);
+	} else {
+		ret = SMB_VFS_SETXATTR(conn,
+				smb_fname->base_name,
+				SAMBA_XATTR_DOSTIMESTAMPS,
+				buf,
+				sizeof(buf),
+				0);
+	}
+
+	if (ret == -1) {
+		map_nt_error_from_unix(errno);
+	}
+	return NT_STATUS_OK;
+}
+
+/******************************************************************
+ Returns an EA create timespec, or a zero timespec if fail.
+******************************************************************/
+
+static struct timespec get_create_timespec_ea(connection_struct *conn,
+                                struct files_struct *fsp,
+                                const struct smb_filename *smb_fname)
+{
+	ssize_t ret;
+	char buf[8];
+	struct timespec ts;
+
+	ZERO_STRUCT(ts);
+
+	if (!lp_store_create_time(SNUM(conn))) {
+		return ts;
+	}
+
+	if (fsp && fsp->fh->fd != -1) {
+		ret = SMB_VFS_FGETXATTR(fsp,
+				SAMBA_XATTR_DOSTIMESTAMPS,
+				buf,
+				sizeof(buf));
+	} else {
+		ret = SMB_VFS_GETXATTR(conn,
+				smb_fname->base_name,
+				SAMBA_XATTR_DOSTIMESTAMPS,
+				buf,
+				sizeof(buf));
+	}
+	if (ret == sizeof(buf)) {
+		return interpret_long_date(buf);
+	} else {
+		return ts;
+	}
+}
+
+/******************************************************************
+ Return a create time - looks at EA.
+******************************************************************/
+
+struct timespec get_create_timespec(connection_struct *conn,
+				struct files_struct *fsp,
 				const struct smb_filename *smb_fname)
 {
-	return smb_fname->st.st_ex_btime;
+	struct timespec ts = get_create_timespec_ea(conn, fsp, smb_fname);
+
+	if (!null_timespec(ts)) {
+		return ts;
+	} else {
+		return smb_fname->st.st_ex_btime;
+	}
 }
 
 /******************************************************************
  Return a change time (may look at EA in future).
 ******************************************************************/
 
-struct timespec get_change_timespec(struct files_struct *fsp,
+struct timespec get_change_timespec(connection_struct *conn,
+				struct files_struct *fsp,
 				const struct smb_filename *smb_fname)
 {
 	return smb_fname->st.st_ex_mtime;
diff --git a/source3/smbd/nttrans.c b/source3/smbd/nttrans.c
index 9f4074c865..03fdff3900 100644
--- a/source3/smbd/nttrans.c
+++ b/source3/smbd/nttrans.c
@@ -596,10 +596,10 @@ void reply_ntcreate_and_X(struct smb_request *req)
 	}
 
 	/* Create time. */
-	create_timespec = get_create_timespec(fsp, smb_fname);
+	create_timespec = get_create_timespec(conn, fsp, smb_fname);
 	a_timespec = smb_fname->st.st_ex_atime;
 	m_timespec = smb_fname->st.st_ex_mtime;
-	c_timespec = get_change_timespec(fsp, smb_fname);
+	c_timespec = get_change_timespec(conn, fsp, smb_fname);
 
 	if (lp_dos_filetime_resolution(SNUM(conn))) {
 		dos_filetime_timespec(&create_timespec);
@@ -1094,10 +1094,10 @@ static void call_nt_transact_create(connection_struct *conn,
 	}
 
 	/* Create time. */
-	create_timespec = get_create_timespec(fsp, smb_fname);
+	create_timespec = get_create_timespec(conn, fsp, smb_fname);
 	a_timespec = smb_fname->st.st_ex_atime;
 	m_timespec = smb_fname->st.st_ex_mtime;
-	c_timespec = get_change_timespec(fsp, smb_fname);
+	c_timespec = get_change_timespec(conn, fsp, smb_fname);
 
 	if (lp_dos_filetime_resolution(SNUM(conn))) {
 		dos_filetime_timespec(&create_timespec);
diff --git a/source3/smbd/open.c b/source3/smbd/open.c
index 62a0fa73b7..63982341ac 100644
--- a/source3/smbd/open.c
+++ b/source3/smbd/open.c
@@ -3280,6 +3280,15 @@ static NTSTATUS create_file_unixpath(connection_struct *conn,
 		SMB_VFS_FSTAT(fsp, &smb_fname->st);
 		fsp->fsp_name->st = smb_fname->st;
 	}
+
+	/* Try and make a create timestamp, if required. */
+	if ((info == FILE_WAS_CREATED) || (info == FILE_WAS_OVERWRITTEN)) {
+		if (lp_store_create_time(SNUM(conn))) {
+			set_create_timespec_ea(conn, fsp,
+				smb_fname, smb_fname->st.st_ex_btime);
+		}
+	}
+
 	return NT_STATUS_OK;
 
  fail:
diff --git a/source3/smbd/reply.c b/source3/smbd/reply.c
index de187e902b..7b290a6b0e 100644
--- a/source3/smbd/reply.c
+++ b/source3/smbd/reply.c
@@ -7793,7 +7793,7 @@ void reply_getattrE(struct smb_request *req)
 
 	reply_outbuf(req, 11, 0);
 
-	create_ts = get_create_timespec(fsp, fsp->fsp_name);
+	create_ts = get_create_timespec(conn, fsp, fsp->fsp_name);
 	srv_put_dos_date2((char *)req->outbuf, smb_vwv0, create_ts.tv_sec);
 	srv_put_dos_date2((char *)req->outbuf, smb_vwv2,
 			  convert_timespec_to_time_t(sbuf.st_ex_atime));
diff --git a/source3/smbd/trans2.c b/source3/smbd/trans2.c
index 93b217558d..b14d50594c 100644
--- a/source3/smbd/trans2.c
+++ b/source3/smbd/trans2.c
@@ -72,6 +72,7 @@ static bool samba_private_attr_name(const char *unix_ea_name)
 	static const char * const prohibited_ea_names[] = {
 		SAMBA_POSIX_INHERITANCE_EA_NAME,
 		SAMBA_XATTR_DOS_ATTRIB,
+		SAMBA_XATTR_DOSTIMESTAMPS,
 		NULL
 	};
 
@@ -1490,8 +1491,8 @@ static bool smbd_marshall_dir_entry(TALLOC_CTX *ctx,
 
 	mdate_ts = smb_fname->st.st_ex_mtime;
 	adate_ts = smb_fname->st.st_ex_atime;
-	create_date_ts = get_create_timespec(NULL, smb_fname);
-	cdate_ts = get_change_timespec(NULL, smb_fname);
+	create_date_ts = get_create_timespec(conn, NULL, smb_fname);
+	cdate_ts = get_change_timespec(conn, NULL, smb_fname);
 
 	if (lp_dos_filetime_resolution(SNUM(conn))) {
 		dos_filetime_timespec(&create_date_ts);
@@ -4057,10 +4058,10 @@ NTSTATUS smbd_do_qfilepathinfo(connection_struct *conn,
 		update_stat_ex_mtime(&sbuf, write_time_ts);
 	}
 
-	create_time_ts = get_create_timespec(fsp, smb_fname);
+	create_time_ts = get_create_timespec(conn, fsp, smb_fname);
 	mtime_ts = sbuf.st_ex_mtime;
 	atime_ts = sbuf.st_ex_atime;
-	ctime_ts = get_change_timespec(fsp, smb_fname);
+	ctime_ts = get_change_timespec(conn, fsp, smb_fname);
 
 	if (lp_dos_filetime_resolution(SNUM(conn))) {
 		dos_filetime_timespec(&create_time_ts);