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/*
Copyright (c) 2008-2009 Gluster, Inc. <http://www.gluster.com>
This file is part of GlusterFS.
GlusterFS 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 of the License,
or (at your option) any later version.
GlusterFS 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, see
<http://www.gnu.org/licenses/>.
*/
#ifndef _CONFIG_H
#define _CONFIG_H
#include "config.h"
#endif
#include "glusterfs.h"
#include "xlator.h"
#include "dht-common.h"
#include "hashfn.h"
typedef enum {
DHT_HASH_TYPE_DM,
} dht_hashfn_type_t;
int
dht_hash_compute_internal (int type, const char *name, uint32_t *hash_p)
{
int ret = 0;
uint32_t hash = 0;
switch (type) {
case DHT_HASH_TYPE_DM:
hash = gf_dm_hashfn (name, strlen (name));
break;
default:
ret = -1;
break;
}
if (ret == 0) {
*hash_p = hash;
}
return ret;
}
#define MAKE_RSYNC_FRIENDLY_NAME(rsync_frndly_name, name) do { \
rsync_frndly_name = (char *) name; \
if (name[0] == '.') { \
char *dot = 0; \
int namelen = 0; \
\
dot = strrchr (name, '.'); \
if (dot && dot > (name + 1) && *(dot + 1)) { \
namelen = (dot - name); \
rsync_frndly_name = alloca (namelen); \
strncpy (rsync_frndly_name, name + 1, \
namelen); \
rsync_frndly_name[namelen - 1] = 0; \
} \
} \
} while (0);
int
dht_hash_compute (int type, const char *name, uint32_t *hash_p)
{
char *rsync_friendly_name = NULL;
MAKE_RSYNC_FRIENDLY_NAME (rsync_friendly_name, name);
return dht_hash_compute_internal (type, rsync_friendly_name, hash_p);
}
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