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/*
Copyright (c) 2008-2012 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.
*/
#ifndef _CONFIG_H
#define _CONFIG_H
#include "config.h"
#endif
#include "glusterfs.h"
#include "xlator.h"
#include "dht-common.h"
#include "hashfn.h"
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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