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nfs_var.h revision 1.81
      1 /*	$NetBSD: nfs_var.h,v 1.81 2008/10/22 11:36:06 matt Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1996 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Christos Zoulas.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 /*
     33  * XXX needs <nfs/rpcv2.h> and <nfs/nfs.h> because of typedefs
     34  */
     35 
     36 #ifdef _KERNEL
     37 #include <sys/mallocvar.h>
     38 #include <sys/pool.h>
     39 
     40 MALLOC_DECLARE(M_NFSD);
     41 MALLOC_DECLARE(M_NFSDIROFF);
     42 
     43 struct vnode;
     44 struct uio;
     45 struct proc;
     46 struct buf;
     47 struct nfs_diskless;
     48 struct sockaddr_in;
     49 struct nfs_dlmount;
     50 struct vnode;
     51 struct nfsd;
     52 struct mbuf;
     53 struct file;
     54 struct nfssvc_sock;
     55 struct nfsmount;
     56 struct socket;
     57 struct nfsreq;
     58 struct vattr;
     59 struct nameidata;
     60 struct nfsnode;
     61 struct sillyrename;
     62 struct componentname;
     63 struct nfsd_srvargs;
     64 struct nfsrv_descript;
     65 struct nfs_fattr;
     66 struct nfsdircache;
     67 union nethostaddr;
     68 
     69 /* nfs_bio.c */
     70 int nfs_bioread(struct vnode *, struct uio *, int, kauth_cred_t, int);
     71 struct buf *nfs_getcacheblk(struct vnode *, daddr_t, int, struct lwp *);
     72 int nfs_vinvalbuf(struct vnode *, int, kauth_cred_t, struct lwp *, int);
     73 int nfs_flushstalebuf(struct vnode *, kauth_cred_t, struct lwp *, int);
     74 #define	NFS_FLUSHSTALEBUF_MYWRITE	1	/* assume writes are ours */
     75 int nfs_asyncio(struct buf *);
     76 int nfs_doio(struct buf *);
     77 
     78 /* nfs_boot.c */
     79 /* see nfsdiskless.h */
     80 
     81 /* nfs_kq.c */
     82 void nfs_kqinit(void);
     83 
     84 /* nfs_node.c */
     85 void nfs_rbtinit(struct nfsmount *);
     86 void nfs_node_reinit(void);
     87 void nfs_node_done(void);
     88 
     89 int nfs_nget1(struct mount *, nfsfh_t *, int, struct nfsnode **, int);
     90 #define	nfs_nget(mp, fhp, fhsize, npp) \
     91 	nfs_nget1((mp), (fhp), (fhsize), (npp), 0)
     92 
     93 /* nfs_vnops.c */
     94 int nfs_null(struct vnode *, kauth_cred_t, struct lwp *);
     95 int nfs_setattrrpc(struct vnode *, struct vattr *, kauth_cred_t, struct lwp *);
     96 int nfs_readlinkrpc(struct vnode *, struct uio *, kauth_cred_t);
     97 int nfs_readrpc(struct vnode *, struct uio *);
     98 int nfs_writerpc(struct vnode *, struct uio *, int *, bool, bool *);
     99 int nfs_mknodrpc(struct vnode *, struct vnode **, struct componentname *,
    100 	struct vattr *);
    101 int nfs_removeit(struct sillyrename *);
    102 int nfs_removerpc(struct vnode *, const char *, int, kauth_cred_t,
    103 	struct lwp *);
    104 int nfs_renameit(struct vnode *, struct componentname *, struct sillyrename *);
    105 int nfs_renamerpc(struct vnode *, const char *, int, struct vnode *,
    106 	const char *, int, kauth_cred_t, struct lwp *);
    107 int nfs_readdirrpc(struct vnode *, struct uio *, kauth_cred_t);
    108 int nfs_readdirplusrpc(struct vnode *, struct uio *, kauth_cred_t);
    109 int nfs_sillyrename(struct vnode *, struct vnode *, struct componentname *,
    110 	bool);
    111 int nfs_lookitup(struct vnode *, const char *, int, kauth_cred_t,
    112 	struct lwp *, struct nfsnode **);
    113 int nfs_commit(struct vnode *, off_t, uint32_t, struct lwp *);
    114 int nfs_flush(struct vnode *, kauth_cred_t, int, struct lwp *, int);
    115 
    116 /* nfs_serv.c */
    117 int nfsrv3_access(struct nfsrv_descript *, struct nfssvc_sock *,
    118 	struct lwp *, struct mbuf **);
    119 int nfsrv_getattr(struct nfsrv_descript *, struct nfssvc_sock *,
    120 	struct lwp *, struct mbuf **);
    121 int nfsrv_setattr(struct nfsrv_descript *, struct nfssvc_sock *,
    122 	struct lwp *, struct mbuf **);
    123 int nfsrv_lookup(struct nfsrv_descript *, struct nfssvc_sock *,
    124 	struct lwp *, struct mbuf **);
    125 int nfsrv_readlink(struct nfsrv_descript *, struct nfssvc_sock *,
    126 	struct lwp *, struct mbuf **);
    127 int nfsrv_read(struct nfsrv_descript *, struct nfssvc_sock *,
    128 	struct lwp *, struct mbuf **);
    129 int nfsrv_write(struct nfsrv_descript *, struct nfssvc_sock *,
    130 	struct lwp *, struct mbuf **);
    131 int nfsrv_writegather(struct nfsrv_descript **, struct nfssvc_sock *,
    132 	struct lwp *, struct mbuf **);
    133 void nfsrvw_coalesce(struct nfsrv_descript *, struct nfsrv_descript *);
    134 int nfsrv_create(struct nfsrv_descript *, struct nfssvc_sock *,
    135 	struct lwp *, struct mbuf **);
    136 int nfsrv_mknod(struct nfsrv_descript *, struct nfssvc_sock *,
    137 	struct lwp *, struct mbuf **);
    138 int nfsrv_remove(struct nfsrv_descript *, struct nfssvc_sock *,
    139 	struct lwp *, struct mbuf **);
    140 int nfsrv_rename(struct nfsrv_descript *, struct nfssvc_sock *,
    141 	struct lwp *, struct mbuf **);
    142 int nfsrv_link(struct nfsrv_descript *, struct nfssvc_sock *,
    143 	struct lwp *, struct mbuf **);
    144 int nfsrv_symlink(struct nfsrv_descript *, struct nfssvc_sock *,
    145 	struct lwp *, struct mbuf **);
    146 int nfsrv_mkdir(struct nfsrv_descript *, struct nfssvc_sock *,
    147 	struct lwp *, struct mbuf **);
    148 int nfsrv_rmdir(struct nfsrv_descript *, struct nfssvc_sock *,
    149 	struct lwp *, struct mbuf **);
    150 int nfsrv_readdir(struct nfsrv_descript *, struct nfssvc_sock *,
    151 	struct lwp *, struct mbuf **);
    152 int nfsrv_readdirplus(struct nfsrv_descript *, struct nfssvc_sock *,
    153 	struct lwp *, struct mbuf **);
    154 int nfsrv_commit(struct nfsrv_descript *, struct nfssvc_sock *,
    155 	struct lwp *, struct mbuf **);
    156 int nfsrv_statfs(struct nfsrv_descript *, struct nfssvc_sock *,
    157 	struct lwp *, struct mbuf **);
    158 int nfsrv_fsinfo(struct nfsrv_descript *, struct nfssvc_sock *,
    159 	struct lwp *, struct mbuf **);
    160 int nfsrv_pathconf(struct nfsrv_descript *, struct nfssvc_sock *,
    161 	struct lwp *, struct mbuf **);
    162 int nfsrv_null(struct nfsrv_descript *, struct nfssvc_sock *,
    163 	struct lwp *, struct mbuf **);
    164 int nfsrv_noop(struct nfsrv_descript *, struct nfssvc_sock *,
    165 	struct lwp *, struct mbuf **);
    166 int nfsrv_access(struct vnode *, int, kauth_cred_t, int, struct lwp *, int);
    167 
    168 /* nfs_socket.c */
    169 int nfs_connect(struct nfsmount *, struct nfsreq *, struct lwp *);
    170 int nfs_reconnect(struct nfsreq *);
    171 void nfs_disconnect(struct nfsmount *);
    172 void nfs_safedisconnect(struct nfsmount *);
    173 int nfs_send(struct socket *, struct mbuf *, struct mbuf *, struct nfsreq *,
    174 	struct lwp *);
    175 int nfs_request(struct nfsnode *, struct mbuf *, int, struct lwp *,
    176 	kauth_cred_t, struct mbuf **, struct mbuf **, char **, int *);
    177 int nfs_rephead(int, struct nfsrv_descript *, struct nfssvc_sock *,
    178 	int, int, u_quad_t *, struct mbuf **, struct mbuf **, char **);
    179 void nfs_timer(void *);
    180 void nfs_timer_init(void);
    181 void nfs_timer_start(void);
    182 int nfs_sigintr(struct nfsmount *, struct nfsreq *, struct lwp *);
    183 int nfs_getreq(struct nfsrv_descript *, struct nfsd *, int);
    184 int nfs_msg(struct lwp *, const char *, const char *);
    185 void nfsrv_soupcall(struct socket *, void *, int);
    186 void nfsrv_rcv(struct nfssvc_sock *);
    187 int nfsrv_getstream(struct nfssvc_sock *, int);
    188 int nfsrv_dorec(struct nfssvc_sock *, struct nfsd *, struct nfsrv_descript **,
    189     bool *);
    190 void nfsrv_wakenfsd(struct nfssvc_sock *);
    191 int nfsdsock_lock(struct nfssvc_sock *, bool);
    192 void nfsdsock_unlock(struct nfssvc_sock *);
    193 int nfsdsock_drain(struct nfssvc_sock *);
    194 int nfsdsock_sendreply(struct nfssvc_sock *, struct nfsrv_descript *);
    195 void nfsdreq_init(void);
    196 struct nfsrv_descript *nfsdreq_alloc(void);
    197 void nfsdreq_free(struct nfsrv_descript *);
    198 
    199 void nfsdsock_setbits(struct nfssvc_sock *, int);
    200 void nfsdsock_clearbits(struct nfssvc_sock *, int);
    201 bool nfsdsock_testbits(struct nfssvc_sock *, int);
    202 
    203 /* nfs_srvcache.c */
    204 void nfsrv_initcache(void);
    205 int nfsrv_getcache(struct nfsrv_descript *, struct nfssvc_sock *,
    206 	struct mbuf **);
    207 void nfsrv_updatecache(struct nfsrv_descript *, int, struct mbuf *);
    208 void nfsrv_cleancache(void);
    209 
    210 /* nfs_subs.c */
    211 struct mbuf *nfsm_reqh(struct nfsnode *, u_long, int, char **);
    212 struct mbuf *nfsm_rpchead(kauth_cred_t, int, int, int, int, char *, int,
    213 	char *, struct mbuf *, int, struct mbuf **, u_int32_t *);
    214 int nfsm_mbuftouio(struct mbuf **, struct uio *, int, char **);
    215 int nfsm_uiotombuf(struct uio *, struct mbuf **, int, char **);
    216 int nfsm_disct(struct mbuf **, char **, int, int, char **);
    217 int nfs_adv(struct mbuf **, char **, int, int);
    218 int nfsm_strtmbuf(struct mbuf **, char **, const char *, long);
    219 u_long nfs_dirhash(off_t);
    220 void nfs_initdircache(struct vnode *);
    221 void nfs_initdirxlatecookie(struct vnode *);
    222 struct nfsdircache *nfs_searchdircache(struct vnode *, off_t, int, int *);
    223 struct nfsdircache *nfs_enterdircache(struct vnode *, off_t, off_t, int,
    224 	daddr_t);
    225 void nfs_putdircache(struct nfsnode *, struct nfsdircache *);
    226 void nfs_invaldircache(struct vnode *, int);
    227 #define	NFS_INVALDIRCACHE_FORCE		1
    228 #define	NFS_INVALDIRCACHE_KEEPEOF	2
    229 void nfs_init __P((void));
    230 int nfsm_loadattrcache(struct vnode **, struct mbuf **, char **,
    231 	struct vattr *, int flags);
    232 int nfs_loadattrcache(struct vnode **, struct nfs_fattr *, struct vattr *,
    233 	int flags);
    234 int nfs_getattrcache(struct vnode *, struct vattr *);
    235 void nfs_delayedtruncate(struct vnode *);
    236 int nfs_check_wccdata(struct nfsnode *, const struct timespec *,
    237 	struct timespec *, bool);
    238 int nfs_namei(struct nameidata *, nfsrvfh_t *, uint32_t, struct nfssvc_sock *,
    239 	struct mbuf *, struct mbuf **, char **, struct vnode **, struct lwp *,
    240 	int, int);
    241 void nfs_zeropad(struct mbuf *, int, int);
    242 void nfsm_srvwcc(struct nfsrv_descript *, int, struct vattr *, int,
    243 	struct vattr *, struct mbuf **, char **);
    244 void nfsm_srvpostopattr(struct nfsrv_descript *, int, struct vattr *,
    245 	struct mbuf **, char **);
    246 void nfsm_srvfattr(struct nfsrv_descript *, struct vattr *, struct nfs_fattr *);
    247 int nfsrv_fhtovp(nfsrvfh_t *, int, struct vnode **, kauth_cred_t,
    248 	struct nfssvc_sock *, struct mbuf *, int *, int, int);
    249 int nfs_ispublicfh __P((const nfsrvfh_t *));
    250 int netaddr_match(int, union nethostaddr *, struct mbuf *);
    251 time_t nfs_attrtimeo(struct nfsmount *, struct nfsnode *);
    252 
    253 /* flags for nfs_loadattrcache and friends */
    254 #define	NAC_NOTRUNC	1	/* don't truncate file size */
    255 
    256 void nfs_clearcommit(struct mount *);
    257 void nfs_merge_commit_ranges(struct vnode *);
    258 int nfs_in_committed_range(struct vnode *, off_t, off_t);
    259 int nfs_in_tobecommitted_range(struct vnode *, off_t, off_t);
    260 void nfs_add_committed_range(struct vnode *, off_t, off_t);
    261 void nfs_del_committed_range(struct vnode *, off_t, off_t);
    262 void nfs_add_tobecommitted_range(struct vnode *, off_t, off_t);
    263 void nfs_del_tobecommitted_range(struct vnode *, off_t, off_t);
    264 
    265 int nfsrv_errmap(struct nfsrv_descript *, int);
    266 void nfs_cookieheuristic(struct vnode *, int *, struct lwp *, kauth_cred_t);
    267 
    268 u_int32_t nfs_getxid(void);
    269 void nfs_renewxid(struct nfsreq *);
    270 
    271 int nfsrv_composefh(struct vnode *, nfsrvfh_t *, bool);
    272 int nfsrv_comparefh(const nfsrvfh_t *, const nfsrvfh_t *);
    273 void nfsrv_copyfh(nfsrvfh_t *, const nfsrvfh_t *);
    274 
    275 /* nfs_syscalls.c */
    276 struct sys_getfh_args;
    277 struct sys_nfssvc_args;
    278 int sys_getfh(struct lwp *, const struct sys_getfh_args *, register_t *);
    279 int sys_nfssvc(struct lwp *, const struct sys_nfssvc_args *, register_t *);
    280 int nfssvc_addsock(struct file *, struct mbuf *);
    281 int nfssvc_nfsd(struct nfsd_srvargs *, void *, struct lwp *);
    282 void nfsrv_zapsock(struct nfssvc_sock *);
    283 void nfsrv_slpderef(struct nfssvc_sock *);
    284 void nfsrv_init(int);
    285 void nfs_iodinit(void);
    286 int nfs_set_niothreads(int);
    287 int nfs_getauth(struct nfsmount *, struct nfsreq *, kauth_cred_t, char **,
    288 	int *, char *, int *, NFSKERBKEY_T);
    289 int nfs_getnickauth(struct nfsmount *, kauth_cred_t, char **, int *, char *,
    290 	int);
    291 int nfs_savenickauth(struct nfsmount *, kauth_cred_t, int, NFSKERBKEY_T,
    292 	struct mbuf **, char **, struct mbuf *);
    293 
    294 /* nfs_export.c */
    295 extern struct nfs_public nfs_pub;
    296 int mountd_set_exports_list(const struct mountd_exports_list *, struct lwp *);
    297 int netexport_check(const fsid_t *, struct mbuf *, struct mount **, int *,
    298     kauth_cred_t *);
    299 void netexport_rdlock(void);
    300 void netexport_rdunlock(void);
    301 #ifdef COMPAT_30
    302 int nfs_update_exports_30(struct mount *, const char *,
    303     struct mnt_export_args30 *, struct lwp *);
    304 #endif
    305 #endif /* _KERNEL */
    306