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quota.h
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quota.h
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/* quota.h -- Quota format definitions
*
* Copyright (c) 1994-2008 Carnegie Mellon University. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The name "Carnegie Mellon University" must not be used to
* endorse or promote products derived from this software without
* prior written permission. For permission or any legal
* details, please contact
* Carnegie Mellon University
* Center for Technology Transfer and Enterprise Creation
* 4615 Forbes Avenue
* Suite 302
* Pittsburgh, PA 15213
* (412) 268-7393, fax: (412) 268-7395
* innovation@andrew.cmu.edu
*
* 4. Redistributions of any form whatsoever must retain the following
* acknowledgment:
* "This product includes software developed by Computing Services
* at Carnegie Mellon University (http://www.cmu.edu/computing/)."
*
* CARNEGIE MELLON UNIVERSITY DISCLAIMS ALL WARRANTIES WITH REGARD TO
* THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS, IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY BE LIABLE
* FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
* AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
* $Id: quota.h,v 1.5 2010/01/06 17:01:39 murch Exp $
*/
#ifndef INCLUDED_QUOTA_H
#define INCLUDED_QUOTA_H
#ifdef HAVE_INTTYPES_H
# include <inttypes.h>
#elif defined(HAVE_STDINT_H)
# include <stdint.h>
#endif
#include "cyrusdb.h"
#include <config.h>
#define FNAME_QUOTADB "/quotas.db"
/* Define the proper quota type, which is 64 bit and signed */
typedef long long int quota_t;
#define QUOTA_T_FMT "%lld"
extern struct db *qdb;
enum quota_resource {
QUOTA_STORAGE =0,
QUOTA_MESSAGE =1,
QUOTA_ANNOTSTORAGE =2,
QUOTA_NUMFOLDERS =3,
#define QUOTA_NUMRESOURCES (QUOTA_NUMFOLDERS+1)
};
#define QUOTA_DIFFS_INITIALIZER \
{ 0, 0, 0, 0 }
#define QUOTA_DIFFS_DONTCARE_INITIALIZER \
{ -1, -1, -1, -1 }
struct quota {
char *root;
/* Information in quota entry */
quota_t useds[QUOTA_NUMRESOURCES];
int limits[QUOTA_NUMRESOURCES]; /* in QUOTA_UNITS */
/* information for scanning */
char *scanmbox;
quota_t scanuseds[QUOTA_NUMRESOURCES];
};
/* special value to indicate no limit applies */
#define QUOTA_UNLIMITED (-1)
extern const char * const quota_names[QUOTA_NUMRESOURCES];
extern const int quota_units[QUOTA_NUMRESOURCES];
int quota_name_to_resource(const char *str);
typedef int quotaproc_t(struct quota *quota, void *rock);
extern int quota_changelock(void);
extern void quota_changelockrelease(void);
extern void quota_init(struct quota *quota, const char *root);
extern void quota_free(struct quota *quota);
extern int quota_read(struct quota *quota, struct txn **tid, int wrlock);
extern int quota_check(const struct quota *quota,
enum quota_resource res, quota_t delta);
extern void quota_use(struct quota *quota,
enum quota_resource res, quota_t delta);
extern void quota_commit(struct txn **tid);
extern void quota_abort(struct txn **tid);
extern int quota_write(struct quota *quota, struct txn **tid);
extern int quota_update_useds(const char *quotaroot,
const quota_t diff[QUOTA_NUMRESOURCES],
const char *mboxname);
extern int quota_check_useds(const char *quotaroot,
const quota_t diff[QUOTA_NUMRESOURCES]);
extern int quota_deleteroot(const char *quotaroot);
extern int quota_findroot(char *ret, size_t retlen, const char *name);
extern int quota_foreach(const char *prefix, quotaproc_t *proc,
void *rock, struct txn **);
/* open the quotas db */
void quotadb_open(const char *fname);
/* close the database */
void quotadb_close(void);
/* initialize database structures */
#define QUOTADB_SYNC 0x02
void quotadb_init(int flags);
/* done with database stuff */
void quotadb_done(void);
#endif /* INCLUDED_QUOTA_H */

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