csv plugin: fix forgotten "datadir" in re-implement value_list_to_filename()

In the commit 7f90e30 the re-implementation of value_list_to_filename
forgot to prepend the datadir string.

Signed-off-by: Florian Forster <octo@collectd.org>

diff --git a/src/csv.c b/src/csv.c
index afb4f83..f123c5d 100644 (file)
--- a/src/csv.c
+++ b/src/csv.c
@@ -126,12 +126,25 @@ static int value_list_to_filename (char *buffer, size_t buffer_size,
 {
        int status;
 
-       char *ptr;
-       size_t ptr_size;
+       char *ptr = buffer;
+       size_t ptr_size = buffer_size;
        time_t now;
        struct tm struct_tm;
 
-       status = FORMAT_VL (buffer, buffer_size, vl);
+       if (datadir != NULL)
+       {
+               size_t len = strlen (datadir) + 1;
+
+               if (len >= ptr_size)
+                       return (ENOBUFS);
+
+               memcpy (ptr, datadir, len);
+               ptr[len-1] = '/';
+               ptr_size -= len;
+               ptr += len;
+       }
+
+       status = FORMAT_VL (ptr, ptr_size, vl);
        if (status != 0)
                return (status);
 
@@ -140,8 +153,8 @@ static int value_list_to_filename (char *buffer, size_t buffer_size,
        if (use_stdio)
                return (0);
 
-       ptr_size = buffer_size - strlen (buffer);
-       ptr = buffer + strlen (buffer);
+       ptr_size -= strlen (ptr);
+       ptr +=  strlen (ptr);
 
        /* "-2013-07-12" => 11 bytes */
        if (ptr_size < 12)