add create_live_tree function

src/lib66/utils/create_live_tree.c

+/*
+ * create_live_tree.c
+ *
+ * Copyright (c) 2018-2021 Eric Vidal <eric@obarun.org>
+ *
+ * All rights reserved.
+ *
+ * This file is part of Obarun. It is subject to the license terms in
+ * the LICENSE file found in the top-level directory of this
+ * distribution.
+ * This file may not be copied, modified, propagated, or distributed
+ * except according to the terms contained in the LICENSE file./
+ */
+
+#include <sys/types.h>
+#include <unistd.h>
+
+#include <oblibs/log.h>
+#include <oblibs/string.h>
+#include <oblibs/types.h>
+#include <oblibs/directory.h>
+
+#include <66/ssexec.h>
+#include <66/utils.h>
+#include <66/constants.h>
+
+int create_live_tree(ssexec_t *info)
+{
+    log_flow() ;
+
+    int r = scan_mode(info->livetree.s, S_IFDIR) ;
+    if (r < 0)
+        log_warn_return(LOG_EXIT_ZERO, "conflicting format for: ", info->livetree.s) ;
+    if (!r) {
+
+        log_trace("create directory: ", info->livetree.s) ;
+        if (!dir_create(info->livetree.s, 0700))
+            log_warnusys_return(LOG_EXIT_ZERO, "create directory: ", info->livetree.s) ;
+
+        log_trace("chown directory: ", info->livetree.s) ;
+        if (chown(info->livetree.s,info->owner,gidowner) < 0)
+            log_warnusys_return(LOG_EXIT_SYS, "chown directory: ", info->livetree.s) ;
+    }
+
+    return 1 ;
+}