allow files of size 0

diff --git a/src/fs/fs_download.c b/src/fs/fs_download.c
index 6943f10b510dd66f746b2218aadb71b2d8c1407f..942a77eeef22b02dd555a34e272fe4508d343259 100644 (file)
--- a/src/fs/fs_download.c
+++ b/src/fs/fs_download.c
@@ -1839,9 +1839,35 @@ void
 GNUNET_FS_download_start_task_ (void *cls,
                                const struct GNUNET_SCHEDULER_TaskContext *tc)
 {
-  struct GNUNET_FS_DownloadContext *dc = cls;
+  struct GNUNET_FS_DownloadContext *dc = cls;  
+  struct GNUNET_FS_ProgressInfo pi;
+  struct GNUNET_DISK_FileHandle *fh;
 
   dc->start_task = GNUNET_SCHEDULER_NO_TASK;
+  if (dc->length == 0)
+    {
+      /* no bytes required! */
+      if (dc->filename != NULL) 
+       {
+         fh = GNUNET_DISK_file_open (dc->filename != NULL 
+                                     ? dc->filename 
+                                     : dc->temp_filename, 
+                                     GNUNET_DISK_OPEN_READWRITE | 
+                                     GNUNET_DISK_OPEN_CREATE,
+                                     GNUNET_DISK_PERM_USER_READ |
+                                     GNUNET_DISK_PERM_USER_WRITE |
+                                     GNUNET_DISK_PERM_GROUP_READ |
+                                     GNUNET_DISK_PERM_OTHER_READ);
+         GNUNET_DISK_file_close (fh);
+       }
+
+      pi.status = GNUNET_FS_STATUS_DOWNLOAD_COMPLETED;
+      GNUNET_FS_download_make_status_ (&pi, dc);
+      GNUNET_FS_download_sync_ (dc);
+       if (dc->parent != NULL)
+       check_completed (dc->parent);      
+      return;
+    }
   schedule_block_download (dc, 
                           (dc->uri->type == chk) 
                           ? &dc->uri->data.chk.chk

diff --git a/src/fs/fs_tree.c b/src/fs/fs_tree.c
index 211714b862bec98096c4594b57611c50b8478405..05c9c55cd594b319469f00da8c777b6226986181 100644 (file)
--- a/src/fs/fs_tree.c
+++ b/src/fs/fs_tree.c
@@ -173,7 +173,6 @@ GNUNET_FS_tree_encoder_create (struct GNUNET_FS_Handle *h,
 {
   struct GNUNET_FS_TreeEncoder *te;
   
-  GNUNET_assert (size > 0);
   te = GNUNET_malloc (sizeof (struct GNUNET_FS_TreeEncoder));  
   te->h = h;
   te->size = size;
@@ -253,7 +252,7 @@ GNUNET_FS_tree_calculate_block_size (uint64_t fsize,
   uint64_t epos;
   unsigned int chks;
 
-  GNUNET_assert (offset < fsize);
+  GNUNET_assert (offset <= fsize);
   if (depth == totaldepth)
     {
       ret = DBLOCK_SIZE;