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/*
Copyright (c) 2014 Red Hat, Inc. <http://www.redhat.com>
This file is part of GlusterFS.
This file is licensed to you under your choice of the GNU Lesser
General Public License, version 3 or any later version (LGPLv3 or
later), or the GNU General Public License, version 2 (GPLv2), in all
cases as published by the Free Software Foundation.
*/
#include <glusterfs/xlator.h>
#include <glusterfs/defaults.h>
#include "meta-mem-types.h"
#include "meta.h"
#include "meta-hooks.h"
static struct meta_dirent graph_dir_dirents[] = {
DOT_DOTDOT,
{
.name = "top",
.type = IA_IFLNK,
.hook = meta_top_link_hook,
},
{
.name = "volfile",
.type = IA_IFREG,
.hook = meta_volfile_file_hook,
},
{.name = NULL}};
static int
graph_dir_fill(xlator_t *this, inode_t *inode, struct meta_dirent **dp)
{
struct meta_dirent *dirents = NULL;
glusterfs_graph_t *graph = NULL;
int i = 0;
int count = 0;
xlator_t *xl = NULL;
graph = meta_ctx_get(inode, this);
for (xl = graph->first; xl; xl = xl->next)
count++;
dirents = GF_MALLOC(sizeof(*dirents) * count, gf_meta_mt_dirents_t);
if (!dirents)
return -1;
i = 0;
for (xl = graph->first; xl; xl = xl->next) {
dirents[i].name = gf_strdup(xl->name);
dirents[i].type = IA_IFDIR;
dirents[i].hook = meta_xlator_dir_hook;
i++;
}
*dp = dirents;
return i;
}
struct meta_ops graph_dir_ops = {
.fixed_dirents = graph_dir_dirents,
.dir_fill = graph_dir_fill,
};
static glusterfs_graph_t *
glusterfs_graph_lookup(xlator_t *this, const char *graph_uuid)
{
glusterfs_graph_t *graph = NULL;
glusterfs_graph_t *tmp = NULL;
list_for_each_entry(tmp, &this->ctx->graphs, list)
{
if (strcmp(graph_uuid, tmp->graph_uuid) == 0) {
graph = tmp;
break;
}
}
return graph;
}
int
meta_graph_dir_hook(call_frame_t *frame, xlator_t *this, loc_t *loc,
dict_t *xdata)
{
glusterfs_graph_t *graph = NULL;
graph = glusterfs_graph_lookup(this, loc->name);
meta_ops_set(loc->inode, this, &graph_dir_ops);
meta_ctx_set(loc->inode, this, (void *)graph);
return 0;
}
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