nfsdcltrack: break out a function to open the database handle

When we add a new usermodehelper upcall program to do the database
access, the existing "init" function will be overkill every time
we start up the program.

Break out the database handle establishment routine into a separate
function that we can call from each upcall command in the one-shot
program.

Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve Dickson <steved@redhat.com>

1 files changed, 34 insertions, 15 deletions

diff --git a/utils/nfsdcltrack/sqlite.c b/utils/nfsdcltrack/sqlite.c
index c19af7e..bac6789 100644
--- a/utils/nfsdcltrack/sqlite.c
+++ b/utils/nfsdcltrack/sqlite.c
@@ -90,24 +90,15 @@ mkdir_if_not_exist(const char *dirname)
 	return ret;
 }
 
-/*
- * Open the "main" database, and attempt to initialize it by creating the
- * parameters table and inserting the schema version into it. Ignore any errors
- * from that, and then attempt to select the version out of it again. If the
- * version appears wrong, then assume that the DB is corrupt or has been
- * upgraded, and return an error. If all of that works, then attempt to create
- * the "clients" table.
- */
+/* Open the database and set up the database handle for it */
 int
-sqlite_maindb_init(const char *topdir)
+sqlite_prepare_dbh(const char *topdir)
 {
 	int ret;
-	char *err = NULL;
-	sqlite3_stmt *stmt = NULL;
 
-	ret = mkdir_if_not_exist(topdir);
-	if (ret)
-		return ret;
+	/* Do nothing if the database handle is already set up */
+	if (dbh)
+		return 0;
 
 	ret = snprintf(buf, PATH_MAX - 1, "%s/main.sqlite", topdir);
 	if (ret < 0)
@@ -118,15 +109,43 @@ sqlite_maindb_init(const char *topdir)
 	ret = sqlite3_open(buf, &dbh);
 	if (ret != SQLITE_OK) {
 		xlog(L_ERROR, "Unable to open main database: %d", ret);
+		dbh = NULL;
 		return ret;
 	}
 
 	ret = sqlite3_busy_timeout(dbh, CLD_SQLITE_BUSY_TIMEOUT);
 	if (ret != SQLITE_OK) {
 		xlog(L_ERROR, "Unable to set sqlite busy timeout: %d", ret);
-		goto out_err;
+		sqlite3_close(dbh);
+		dbh = NULL;
 	}
 
+	return ret;
+}
+
+/*
+ * Open the "main" database, and attempt to initialize it by creating the
+ * parameters table and inserting the schema version into it. Ignore any errors
+ * from that, and then attempt to select the version out of it again. If the
+ * version appears wrong, then assume that the DB is corrupt or has been
+ * upgraded, and return an error. If all of that works, then attempt to create
+ * the "clients" table.
+ */
+int
+sqlite_maindb_init(const char *topdir)
+{
+	int ret;
+	char *err = NULL;
+	sqlite3_stmt *stmt = NULL;
+
+	ret = mkdir_if_not_exist(topdir);
+	if (ret)
+		return ret;
+
+	ret = sqlite_prepare_dbh(topdir);
+	if (ret)
+		return ret;
+
 	/* Try to create table */
 	ret = sqlite3_exec(dbh, "CREATE TABLE IF NOT EXISTS parameters "
 				"(key TEXT PRIMARY KEY, value TEXT);",