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/*
* cleaner_msg.h - NILFS cleaner message format
*
* Licensed under LGPLv2: the complete text of the GNU Lesser General
* Public License can be found in COPYING file of the nilfs-utils
* package.
*
* Copyright (C) 2011-2012 Nippon Telegraph and Telephone Corporation.
*/
#ifndef NILFS_CLEANER_MSG_H
#define NILFS_CLEANER_MSG_H
#include <stdint.h>
#include <uuid/uuid.h>
#include "nilfs_cleaner.h"
#define NILFS_CLEANER_PRIO_HIGH 1
#define NILFS_CLEANER_PRIO_NORMAL 9
#define NILFS_CLEANER_MSG_MAX_PATH 4064 /* max pathname length */
#define NILFS_CLEANER_MSG_MAX_REQSZ 4096 /* max request size */
enum {
NILFS_CLEANER_CMD_GET_STATUS, /* get status */
NILFS_CLEANER_CMD_RUN, /* run gc */
NILFS_CLEANER_CMD_SUSPEND, /* suspend */
NILFS_CLEANER_CMD_RESUME, /* resume */
NILFS_CLEANER_CMD_TUNE, /* set parameter */
NILFS_CLEANER_CMD_RELOAD, /* reload configuration file */
NILFS_CLEANER_CMD_WAIT, /* wait for completion of a job */
NILFS_CLEANER_CMD_STOP, /* stop running gc */
NILFS_CLEANER_CMD_SHUTDOWN, /* shutdown daemon */
};
struct nilfs_cleaner_request {
int32_t cmd;
uint32_t argsize;
uuid_t client_uuid;
/* must be aligned to 64-bit size boundary */
char buf[0]; /* payload */
};
struct nilfs_cleaner_request_with_args {
struct nilfs_cleaner_request hdr;
struct nilfs_cleaner_args args;
};
struct nilfs_cleaner_request_with_path {
struct nilfs_cleaner_request hdr;
char pathname[NILFS_CLEANER_MSG_MAX_PATH];
};
struct nilfs_cleaner_request_with_jobid {
struct nilfs_cleaner_request hdr;
uint32_t jobid;
};
enum {
NILFS_CLEANER_RSP_ACK,
NILFS_CLEANER_RSP_NACK,
};
struct nilfs_cleaner_response {
int16_t result;
int16_t status; /* cleanerd status */
int32_t err;
uint32_t jobid;
uint32_t pad;
};
#endif /* NILFS_CLEANER_MSG_H */
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