/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*
 * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 * Copyright 2023 MNX Cloud, Inc.
 */

/*      Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T     */
/*        All Rights Reserved   */

#ifndef _NFS_NFSSYS_H
#define _NFS_NFSSYS_H

#ifdef  __cplusplus
extern "C" {
#endif

/*
 * Private definitions for the nfssys system call.
 * Note: <nfs/export.h> and <nfs/nfs.h> must be included before
 * this file.
 */

/*
 * Flavors of nfssys call.  Note that OLD_mumble commands are no longer
 * implemented, but the entries are kept as placeholders for binary
 * compatibility.
 */
enum nfssys_op  { OLD_NFS_SVC, OLD_ASYNC_DAEMON, EXPORTFS, OLD_NFS_GETFH,
    OLD_NFS_CNVT, NFS_REVAUTH, OLD_NFS_FH_TO_FID, OLD_LM_SVC, KILL_LOCKMGR,
    LOG_FLUSH, SVCPOOL_CREATE, NFS_SVC, LM_SVC, SVCPOOL_WAIT, SVCPOOL_RUN,
    NFS4_SVC, RDMA_SVC_INIT, NFS4_CLR_STATE, NFS_IDMAP,
    NFS4_SVC_REQUEST_QUIESCE, NFS_GETFH, NFS4_DSS_SETPATHS,
    NFS4_DSS_SETPATHS_SIZE, NFS4_EPHEMERAL_MOUNT_TO, MOUNTD_ARGS,
    NFSCMD_ARGS };

/*
 * The protocol version below represents protocol version number and
 *  for version 4  - minor version number. Use NFS_PROT_VERSION() and
 * NFS_PROT_V4_MINORVERSION() to analyse them.
 */
struct nfs_svc_args {
        int             fd;             /* Connection endpoint */
        char            *netid;         /* Identify transport */
        struct netbuf   addrmask;       /* Address mask for host */
        uint32_t        nfs_versmin;    /* Min protocol version. NFS_VERS_ */
        uint32_t        nfs_versmax;    /* Max protocol version. NFS_VERS_ */
        int             delegation;     /* NFSv4 delegation on/off? */
};

#ifdef _SYSCALL32
struct nfs_svc_args32 {
        int32_t         fd;             /* Connection endpoint */
        caddr32_t       netid;          /* Identify transport */
        struct netbuf32 addrmask;       /* Address mask for host */
        uint32_t        nfs_versmin;    /* Min protocol version. NFS_VERS_ */
        uint32_t        nfs_versmax;    /* Max protocol version. NFS_VERS_ */
        int32_t         delegation;     /* NFSv4 delegation on/off? */
};
#endif

struct exportfs_args {
        char            *dname;
        struct exportdata *uex;
};

#ifdef _SYSCALL32
struct exportfs_args32 {
        caddr32_t       dname;
        caddr32_t       uex;
};
#endif

struct nfs_getfh_args {
        char            *fname;
        int             vers;
        int             *lenp;
        char            *fhp;
};

#ifdef _SYSCALL32
struct nfs_getfh_args32 {
        caddr32_t       fname;
        int32_t         vers;
        caddr32_t       lenp;
        caddr32_t       fhp;
};
#endif

struct nfs_revauth_args {
        int             authtype;
        uid_t           uid;
};

#ifdef _SYSCALL32
struct nfs_revauth_args32 {
        int32_t         authtype;
        uid32_t         uid;
};
#endif

/*
 * Arguments for establishing lock manager service.  If you change
 * lm_svc_args, you should increment the version number.  Try to keep
 * supporting one or more old versions of the args, so that old lockd's
 * will work with new kernels.
 */

enum lm_fmly  { LM_INET, LM_INET6, LM_LOOPBACK };
enum lm_proto { LM_TCP, LM_UDP };

struct lm_svc_args {
        int             version;        /* keep this first */
        int             fd;
        enum lm_fmly    n_fmly;         /* protocol family */
        enum lm_proto   n_proto;        /* protocol */
        dev_t           n_rdev;         /* device ID */
        int             debug;          /* debugging level */
        time_t          timout;         /* client handle life (asynch RPCs) */
        int             grace;          /* secs in grace period */
        time_t  retransmittimeout;      /* retransmission interval */
};

#ifdef _SYSCALL32
struct lm_svc_args32 {
        int32_t         version;        /* keep this first */
        int32_t         fd;
        enum lm_fmly    n_fmly;         /* protocol family */
        enum lm_proto   n_proto;        /* protocol */
        dev32_t         n_rdev;         /* device ID */
        int32_t         debug;          /* debugging level */
        time32_t        timout;         /* client handle life (asynch RPCs) */
        int32_t         grace;          /* secs in grace period */
        time32_t        retransmittimeout;      /* retransmission interval */
};
#endif

#define LM_SVC_CUR_VERS 30              /* current lm_svc_args vers num */

/*
 * Arguments for nfslog flush service.
 */
struct nfsl_flush_args {
        int             version;
        int             directive;
        char            *buff;          /* buffer to flush/rename */
        int             buff_len;       /* includes terminating '\0' */
};

#define NFSL_FLUSH_ARGS_VERS 1          /* current nfsl_flush_args vers num */

#ifdef _SYSCALL32
struct nfsl_flush_args32 {
        int32_t         version;
        int32_t         directive;
        caddr32_t       buff;           /* buffer to flush/rename */
        int32_t         buff_len;       /* includes terminating '\0' */
};
#endif

/*
 * Arguments for initialising RDMA service.
 */
struct rdma_svc_args {
        uint32_t        poolid;         /* Thread Pool ID */
        char            *netid;         /* Network Identifier */
        uint32_t        nfs_versmin;    /* Min NFS version. NFS_VERS_... */
        uint32_t        nfs_versmax;    /* Max NFS version. NFS_VERS_... */
        int             delegation;     /* NFSv4 delegation on/off? */
};

#ifdef _SYSCALL32
struct rdma_svc_args32 {
        uint32_t        poolid;         /* Thread Pool ID */
        caddr32_t       netid;          /* Network Identifier */
        uint32_t        nfs_versmin;    /* Min NFS version. NFS_VERS_... */
        uint32_t        nfs_versmax;    /* Max NFS version. NFS_VERS_... */
        int32_t         delegation;     /* NFSv4 delegation on/off? */
};
#endif


#define NFS4_CLRST_VERSION      1
struct nfs4clrst_args {
        int             vers;
        int             addr_type;
        void            *ap;
};

#ifdef _SYSCALL32
struct nfs4clrst_args32 {
        int32_t         vers;
        int32_t         addr_type;
        caddr32_t       ap;
};
#endif

struct nfsidmap_args {
        uint_t          state;  /* Flushes caches, set state up 1 or down 0 */
        uint_t          did;    /* Door id to upcall */
};

#define NFSL_ALL        0x01            /* Flush all buffers */
#define NFSL_RENAME     0x02            /* Rename buffer(s) */
#define NFSL_SYNC       0x04            /* Perform operation synchronously? */

#ifdef _KERNEL
union nfssysargs {
        struct exportfs_args    *exportfs_args_u;       /* exportfs args */
        struct nfs_getfh_args   *nfs_getfh_args_u;      /* nfs_getfh args */
        struct nfs_svc_args     *nfs_svc_args_u;        /* nfs_svc args */
        struct rdma_svc_args    *rdma_svc_args_u;       /* rdma_svc args */
        struct nfs_revauth_args *nfs_revauth_args_u;    /* nfs_revauth args */
        struct lm_svc_args      *lm_svc_args_u;         /* lm_svc args */
        /* kill_lockmgr args: none */
        struct nfsl_flush_args  *nfsl_flush_args_u;     /* nfsl_flush args */
        struct svcpool_args     *svcpool_args_u;        /* svcpool args */
        struct nfs4clrst_args   *nfs4clrst_u;           /* nfs4 clear state */
        struct nfsidmap_args    *nfsidmap_u;            /* nfsidmap */
};

struct nfssysa {
        enum nfssys_op          opcode; /* operation discriminator */
        union nfssysargs        arg;    /* syscall-specific arg pointer */
};
#define nfssysarg_exportfs      arg.exportfs_args_u
#define nfssysarg_getfh         arg.nfs_getfh_args_u
#define nfssysarg_svc           arg.nfs_svc_args_u
#define nfssysarg_rdmastart     arg.rdma_svc_args_u
#define nfssysarg_revauth       arg.nfs_revauth_args_u
#define nfssysarg_lmsvc         arg.lm_svc_args_u
#define nfssysarg_nfslflush     arg.nfsl_flush_args_u
#define nfssysarg_svcpool       arg.svcpool_args_u
#define nfssysarg_nfs4clrst     arg.nfs4clrst_u
#define nfssysarg_nfsidmap      arg.nfsidmap_u

#ifdef _SYSCALL32
union nfssysargs32 {
        caddr32_t exportfs_args_u;      /* exportfs args */
        caddr32_t nfs_getfh_args_u;     /* nfs_getfh args */
        caddr32_t nfs_svc_args_u;       /* nfs_svc args */
        caddr32_t rdma_svc_args_u;      /* rdma_start args */
        caddr32_t nfs_revauth_args_u;   /* nfs_revauth args */
        caddr32_t lm_svc_args_u;        /* lm_svc args */
        /* kill_lockmgr args: none */
        caddr32_t nfsl_flush_args_u;    /* nfsl_flush args */
        caddr32_t svcpool_args_u;
        caddr32_t nfs4clrst_u;
};
struct nfssysa32 {
        enum nfssys_op          opcode; /* operation discriminator */
        union nfssysargs32      arg;    /* syscall-specific arg pointer */
};
#endif /* _SYSCALL32 */

#endif  /* _KERNEL */

struct nfs4_svc_args {
        int             fd;             /* Connection endpoint */
        int             cmd;
        char            *netid;         /* Transport Identifier */
        char            *addr;          /* Universal Address */
        char            *protofmly;     /* Protocol Family */
        char            *proto;         /* Protocol, eg. "tcp" */
        struct netbuf   addrmask;       /* Address mask for host */
};

#ifdef _SYSCALL32
struct nfs4_svc_args32 {
        int32_t         fd;
        int32_t         cmd;
        caddr32_t       netid;
        caddr32_t       addr;
        caddr32_t       protofmly;
        caddr32_t       proto;
        struct netbuf32 addrmask;
};
#endif

#define NFS4_KRPC_START 1
#define NFS4_SETPORT    2
#define NFS4_DQUERY     4

/* DSS: distributed stable storage */
#define NFS4_DSS_STATE_LEAF     "v4_state"
#define NFS4_DSS_OLDSTATE_LEAF  "v4_oldstate"
#define NFS4_DSS_DIR_MODE       0755
#define NFS4_DSS_NVPAIR_NAME    "dss_pathname_array"
/* default storage dir */
#define NFS4_DSS_VAR_DIR        "/var/nfs"

#ifdef _KERNEL

#include <sys/systm.h>          /* for rval_t typedef */

extern int      nfssys(enum nfssys_op opcode, void *arg);
extern int      exportfs(struct exportfs_args *, model_t, cred_t *);
extern int      nfs_getfh(struct nfs_getfh_args *, model_t, cred_t *);
extern int      nfs_svc(struct nfs_svc_args *, model_t);
extern int      lm_svc(struct lm_svc_args *uap);
extern int      lm_shutdown(void);
extern int      nfsl_flush(struct nfsl_flush_args *, model_t);
extern int      nfs4_svc(struct nfs4_svc_args *, model_t);
extern int      rdma_start(struct rdma_svc_args *);
extern int      rfs4_clear_client_state(struct nfs4clrst_args *);
extern void     nfs_idmap_args(struct nfsidmap_args *);
extern void     nfs4_ephemeral_set_mount_to(uint_t);
extern void     mountd_args(uint_t);
#endif

#ifdef  __cplusplus
}
#endif

#endif  /* _NFS_NFSSYS_H */