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/*
Copyright (c) 2015 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 "dict.h"
#include "logging.h"
#include "byte-order.h"
#include "quota-common-utils.h"
#include "common-utils.h"
#include "libglusterfs-messages.h"
gf_boolean_t
quota_meta_is_null (const quota_meta_t *meta)
{
if (meta->size == 0 &&
meta->file_count == 0 &&
meta->dir_count == 0)
return _gf_true;
return _gf_false;
}
int32_t
quota_data_to_meta (data_t *data, char *key, quota_meta_t *meta)
{
int32_t ret = -1;
quota_meta_t *value = NULL;
int64_t *size = NULL;
if (!data || !key || !meta)
goto out;
if (data->len > sizeof (int64_t)) {
value = (quota_meta_t *) data->data;
meta->size = ntoh64 (value->size);
meta->file_count = ntoh64 (value->file_count);
if (data->len > (sizeof (int64_t)) * 2)
meta->dir_count = ntoh64 (value->dir_count);
else
meta->dir_count = 0;
} else {
size = (int64_t *) data->data;
meta->size = ntoh64 (*size);
meta->file_count = 0;
meta->dir_count = 0;
/* This can happen during software upgrade.
* Older version of glusterfs will not have inode count.
* Return failure, this will be healed as part of lookup
*/
gf_msg_callingfn ("quota", GF_LOG_DEBUG, 0,
LG_MSG_QUOTA_XATTRS_MISSING, "Object quota "
"xattrs missing: len = %d", data->len);
ret = -2;
goto out;
}
ret = 0;
out:
return ret;
}
int32_t
quota_dict_get_inode_meta (dict_t *dict, char *key, quota_meta_t *meta)
{
int32_t ret = -1;
data_t *data = NULL;
if (!dict || !key || !meta)
goto out;
data = dict_get (dict, key);
if (!data || !data->data)
goto out;
ret = quota_data_to_meta (data, key, meta);
out:
return ret;
}
int32_t
quota_dict_get_meta (dict_t *dict, char *key, quota_meta_t *meta)
{
int32_t ret = -1;
ret = quota_dict_get_inode_meta (dict, key, meta);
if (ret == -2)
ret = 0;
return ret;
}
int32_t
quota_dict_set_meta (dict_t *dict, char *key, const quota_meta_t *meta,
ia_type_t ia_type)
{
int32_t ret = -ENOMEM;
quota_meta_t *value = NULL;
value = GF_CALLOC (1, sizeof (quota_meta_t), gf_common_quota_meta_t);
if (value == NULL) {
goto out;
}
value->size = hton64 (meta->size);
value->file_count = hton64 (meta->file_count);
value->dir_count = hton64 (meta->dir_count);
if (ia_type == IA_IFDIR) {
ret = dict_set_bin (dict, key, value, sizeof (*value));
} else {
/* For a file we don't need to store dir_count in the
* quota size xattr, so we set the len of the data in the dict
* as 128bits, so when the posix xattrop reads the dict, it only
* performs operations on size and file_count
*/
ret = dict_set_bin (dict, key, value,
sizeof (*value) - sizeof (int64_t));
}
if (ret < 0) {
gf_msg_callingfn ("quota", GF_LOG_ERROR, 0,
LG_MSG_DICT_SET_FAILED, "dict set failed");
GF_FREE (value);
}
out:
return ret;
}
int32_t
quota_conf_read_header (int fd, char *buf)
{
int header_len = 0;
int ret = 0;
header_len = strlen (QUOTA_CONF_HEADER);
ret = gf_nread (fd, buf, header_len);
if (ret <= 0) {
goto out;
} else if (ret > 0 && ret != header_len) {
ret = -1;
goto out;
}
buf[header_len-1] = 0;
out:
if (ret < 0)
gf_msg_callingfn ("quota", GF_LOG_ERROR, 0,
LG_MSG_QUOTA_CONF_ERROR, "failed to read "
"header from a quota conf");
return ret;
}
int32_t
quota_conf_read_version (int fd, float *version)
{
int ret = 0;
char buf[PATH_MAX] = "";
char *tail = NULL;
float value = 0.0f;
ret = quota_conf_read_header (fd, buf);
if (ret == 0) {
/* quota.conf is empty */
value = GF_QUOTA_CONF_VERSION;
goto out;
} else if (ret < 0) {
goto out;
}
value = strtof ((buf + strlen(buf) - 3), &tail);
if (tail[0] != '\0') {
ret = -1;
gf_msg_callingfn ("quota", GF_LOG_ERROR, 0,
LG_MSG_QUOTA_CONF_ERROR, "invalid quota conf"
" version");
goto out;
}
ret = 0;
out:
if (ret >= 0)
*version = value;
else
gf_msg_callingfn ("quota", GF_LOG_ERROR, 0,
LG_MSG_QUOTA_CONF_ERROR, "failed to "
"read version from a quota conf header");
return ret;
}
int32_t
quota_conf_read_gfid (int fd, void *buf, char *type, float version)
{
int ret = 0;
ret = gf_nread (fd, buf, 16);
if (ret <= 0)
goto out;
if (ret != 16) {
ret = -1;
goto out;
}
if (version >= 1.2f) {
ret = gf_nread (fd, type, 1);
if (ret != 1) {
ret = -1;
goto out;
}
ret = 17;
} else {
*type = GF_QUOTA_CONF_TYPE_USAGE;
}
out:
if (ret < 0)
gf_msg_callingfn ("quota", GF_LOG_ERROR, 0,
LG_MSG_QUOTA_CONF_ERROR, "failed to "
"read gfid from a quota conf");
return ret;
}
int32_t
quota_conf_skip_header (int fd)
{
return gf_skip_header_section (fd, strlen (QUOTA_CONF_HEADER));
}
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