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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071727374757677787980818283848586878889909192939495969798/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note *//* * 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
#include <linux/types.h>
/* latest upcall version available */#define CLD_UPCALL_VERSION 2
/* defined by RFC3530 */#define NFS4_OPAQUE_LIMIT 1024
#ifndef SHA256_DIGEST_SIZE#define SHA256_DIGEST_SIZE 32#endif
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 */ Cld_GraceStart, /* grace start (upload client records) */ Cld_GetVersion, /* query max supported upcall version */};
/* representation of long-form NFSv4 client ID */struct cld_name { __u16 cn_len; /* length of cm_id */ unsigned char cn_id[NFS4_OPAQUE_LIMIT]; /* client-provided */} __attribute__((packed));
/* sha256 hash of the kerberos principal */struct cld_princhash { __u8 cp_len; /* length of cp_data */ unsigned char cp_data[SHA256_DIGEST_SIZE]; /* hash of principal */} __attribute__((packed));
struct cld_clntinfo { struct cld_name cc_name; struct cld_princhash cc_princhash;} __attribute__((packed));
/* message struct for communication with userspace */struct cld_msg { __u8 cm_vers; /* upcall version */ __u8 cm_cmd; /* upcall command */ __s16 cm_status; /* return code */ __u32 cm_xid; /* transaction id */ union { __s64 cm_gracetime; /* grace period start time */ struct cld_name cm_name; __u8 cm_version; /* for getting max version */ } __attribute__((packed)) cm_u;} __attribute__((packed));
/* version 2 message can include hash of kerberos principal */struct cld_msg_v2 { __u8 cm_vers; /* upcall version */ __u8 cm_cmd; /* upcall command */ __s16 cm_status; /* return code */ __u32 cm_xid; /* transaction id */ union { struct cld_name cm_name; __u8 cm_version; /* for getting max version */ struct cld_clntinfo cm_clntinfo; /* name & princ hash */ } __attribute__((packed)) cm_u;} __attribute__((packed));
struct cld_msg_hdr { __u8 cm_vers; /* upcall version */ __u8 cm_cmd; /* upcall command */ __s16 cm_status; /* return code */ __u32 cm_xid; /* transaction id */} __attribute__((packed));
#endif /* !_NFSD_CLD_H */