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/*
This file is part of gnunet-fuse.
(C) 2012 Christian Grothoff (and other contributing authors)
gnunet-fuse is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published
by the Free Software Foundation; either version 3, or (at your
option) any later version.
gnunet-fuse is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/*
* readdir.c - FUSE read directory function
*
* Created on: Mar 14, 2012
* Author: MG, Christian Grothoff, Matthias Wachs,
* Krista Bennett, James Blackwell, Igor Wronsky
*
* Read directory
*
* This supersedes the old getdir() interface. New applications
* should use this.
*
* The filesystem may choose between two modes of operation:
*
* 1) The readdir implementation ignores the offset parameter, and
* passes zero to the filler function's offset. The filler
* function will not return '1' (unless an error happens), so the
* whole directory is read in a single readdir operation. This
* works just like the old getdir() method.
*
* 2) The readdir implementation keeps track of the offsets of the
* directory entries. It uses the offset parameter and always
* passes non-zero offset to the filler function. When the buffer
* is full (or an error happens) the filler function will return
* '1'.
*
* Introduced in version 2.3
*/
/**
* @file fuse/readdir.c
* @brief readdir of fuse
* @author Christian Grothoff
*/
#include "gnunet-fuse.h"
#include "gfs_download.h"
int
gn_readdir (const char *path, void *buf, fuse_fill_dir_t filler,
off_t offset, struct fuse_file_info *fi)
{
struct GNUNET_FUSE_PathInfo *path_info;
struct GNUNET_FUSE_PathInfo *pos;
int eno;
path_info = GNUNET_FUSE_path_info_get (path, &eno);
if (NULL == path_info)
return - eno;
if ( (NULL == path_info->tmpfile) &&
(GNUNET_OK != GNUNET_FUSE_load_directory (path_info, &eno)) )
return - eno;
filler (buf, ".", NULL, 0);
filler (buf, "..", NULL, 0);
for (pos = path_info->child_head; NULL != pos; pos = pos->next)
filler (buf, pos->filename,
&pos->stbuf,
0);
GNUNET_FUSE_path_info_done (path_info);
return 0;
}
/* end of readdir.c */
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