Write /etc/resolv.conf file directly

diff --git a/plugins/resolvfile.c b/plugins/resolvfile.c
index d39b2e1..bf48081 100644 (file)
--- a/plugins/resolvfile.c
+++ b/plugins/resolvfile.c
@@ -23,7 +23,11 @@
 #include <config.h>
 #endif
 
-#include <stdlib.h>
+#include <stdio.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <string.h>
+#include <sys/stat.h>
 
 #include <connman/plugin.h>
 #include <connman/driver.h>
@@ -34,7 +38,7 @@ static int resolvfile_probe(struct connman_element *element)
        const char *nameserver = NULL;
        struct connman_element *internet;
        gchar *cmd;
-       int err;
+       int fd, len, err;
 
        DBG("element %p name %s", element, element->name);
 
@@ -44,15 +48,21 @@ static int resolvfile_probe(struct connman_element *element)
        if (nameserver == NULL)
                return -EINVAL;
 
-       cmd = g_strdup_printf("echo \"nameserver %s\" > /etc/resolv.conf",
-                                                               nameserver);
+       fd = open("/etc/resolv.conf", O_RDWR | O_CREAT,
+                                       S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH);
+       if (fd < 0)
+               return errno;
 
-       DBG("%s", cmd);
+       err = ftruncate(fd, 0);
 
-       err = system(cmd);
+       cmd = g_strdup_printf("nameserver %s\n", nameserver);
+
+       len = write(fd, cmd, strlen(cmd));
 
        g_free(cmd);
 
+       close(fd);
+
        internet = connman_element_create();
 
        internet->type = CONNMAN_ELEMENT_TYPE_INTERNET;