57 lines
1.8 KiB
C
57 lines
1.8 KiB
C
/*
|
|
* Upcall description for nfsdcld communication
|
|
*
|
|
* Copyright (c) 2012 Red Hat, Inc.
|
|
* Author(s): Jeff Layton <jlayton@redhat.com>
|
|
*
|
|
* This program 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 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program 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, write to the Free Software
|
|
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
*/
|
|
|
|
#ifndef _NFSD_CLD_H
|
|
#define _NFSD_CLD_H
|
|
|
|
/* latest upcall version available */
|
|
#define CLD_UPCALL_VERSION 1
|
|
|
|
/* defined by RFC3530 */
|
|
#define NFS4_OPAQUE_LIMIT 1024
|
|
|
|
enum cld_command {
|
|
Cld_Create, /* create a record for this cm_id */
|
|
Cld_Remove, /* remove record of this cm_id */
|
|
Cld_Check, /* is this cm_id allowed? */
|
|
Cld_GraceDone, /* grace period is complete */
|
|
};
|
|
|
|
/* representation of long-form NFSv4 client ID */
|
|
struct cld_name {
|
|
uint16_t cn_len; /* length of cm_id */
|
|
unsigned char cn_id[NFS4_OPAQUE_LIMIT]; /* client-provided */
|
|
} __attribute__((packed));
|
|
|
|
/* message struct for communication with userspace */
|
|
struct cld_msg {
|
|
uint8_t cm_vers; /* upcall version */
|
|
uint8_t cm_cmd; /* upcall command */
|
|
int16_t cm_status; /* return code */
|
|
uint32_t cm_xid; /* transaction id */
|
|
union {
|
|
int64_t cm_gracetime; /* grace period start time */
|
|
struct cld_name cm_name;
|
|
} __attribute__((packed)) cm_u;
|
|
} __attribute__((packed));
|
|
|
|
#endif /* !_NFSD_CLD_H */
|