| 1 | /* $NetBSD: nfsmount.h,v 1.53 2015/07/15 03:28:55 manu Exp $ */ |
| 2 | |
| 3 | /* |
| 4 | * Copyright (c) 1989, 1993 |
| 5 | * The Regents of the University of California. All rights reserved. |
| 6 | * |
| 7 | * This code is derived from software contributed to Berkeley by |
| 8 | * Rick Macklem at The University of Guelph. |
| 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 | * 3. Neither the name of the University nor the names of its contributors |
| 19 | * may be used to endorse or promote products derived from this software |
| 20 | * without specific prior written permission. |
| 21 | * |
| 22 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| 23 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 24 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 25 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| 26 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 27 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 28 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 29 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 30 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 31 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 32 | * SUCH DAMAGE. |
| 33 | * |
| 34 | * @(#)nfsmount.h 8.3 (Berkeley) 3/30/95 |
| 35 | */ |
| 36 | |
| 37 | |
| 38 | #ifndef _NFS_NFSMOUNT_H_ |
| 39 | #define _NFS_NFSMOUNT_H_ |
| 40 | |
| 41 | #if defined(_KERNEL) && !defined(NFS_ARGS_ONLY) |
| 42 | #include <sys/condvar.h> |
| 43 | #include <sys/rwlock.h> |
| 44 | #include <sys/mutex.h> |
| 45 | #include <sys/disk.h> |
| 46 | #endif |
| 47 | |
| 48 | /* |
| 49 | * Arguments to mount NFS |
| 50 | */ |
| 51 | #define NFS_ARGSVERSION 3 /* change when nfs_args changes */ |
| 52 | struct nfs_args { |
| 53 | int version; /* args structure version number */ |
| 54 | struct sockaddr *addr; /* file server address */ |
| 55 | int addrlen; /* length of address */ |
| 56 | int sotype; /* Socket type */ |
| 57 | int proto; /* and Protocol */ |
| 58 | u_char *fh; /* File handle to be mounted */ |
| 59 | int fhsize; /* Size, in bytes, of fh */ |
| 60 | int flags; /* flags */ |
| 61 | int wsize; /* write size in bytes */ |
| 62 | int rsize; /* read size in bytes */ |
| 63 | int readdirsize; /* readdir size in bytes */ |
| 64 | int timeo; /* initial timeout in .1 secs */ |
| 65 | int retrans; /* times to retry send */ |
| 66 | int maxgrouplist; /* Max. size of group list */ |
| 67 | int readahead; /* # of blocks to readahead */ |
| 68 | int leaseterm; /* Ignored; Term (sec) of lease */ |
| 69 | int deadthresh; /* Retrans threshold */ |
| 70 | char *hostname; /* server's name */ |
| 71 | }; |
| 72 | |
| 73 | /* |
| 74 | * NFS mount option flags (nm_flag) |
| 75 | */ |
| 76 | #define NFSMNT_SOFT 0x00000001 /* soft mount (hard is default) */ |
| 77 | #define NFSMNT_WSIZE 0x00000002 /* set write size */ |
| 78 | #define NFSMNT_RSIZE 0x00000004 /* set read size */ |
| 79 | #define NFSMNT_TIMEO 0x00000008 /* set initial timeout */ |
| 80 | #define NFSMNT_RETRANS 0x00000010 /* set number of request retries */ |
| 81 | #define NFSMNT_MAXGRPS 0x00000020 /* set maximum grouplist size */ |
| 82 | #define NFSMNT_INT 0x00000040 /* allow interrupts on hard mount */ |
| 83 | #define NFSMNT_NOCONN 0x00000080 /* Don't Connect the socket */ |
| 84 | #define NFSMNT_NQNFS 0x00000100 /* Use Nqnfs protocol */ |
| 85 | #define NFSMNT_NFSV3 0x00000200 /* Use NFS Version 3 protocol */ |
| 86 | #define NFSMNT_KERB 0x00000400 /* Use Kerberos authentication */ |
| 87 | #define NFSMNT_DUMBTIMR 0x00000800 /* Don't estimate rtt dynamically */ |
| 88 | #define NFSMNT_LEASETERM 0x00001000 /* Ignored; lease term (nqnfs) */ |
| 89 | #define NFSMNT_READAHEAD 0x00002000 /* set read ahead */ |
| 90 | #define NFSMNT_DEADTHRESH 0x00004000 /* set dead server retry thresh */ |
| 91 | #define NFSMNT_RESVPORT 0x00008000 /* Allocate a reserved port */ |
| 92 | #define NFSMNT_RDIRPLUS 0x00010000 /* Use Readdirplus for V3 */ |
| 93 | #define NFSMNT_READDIRSIZE 0x00020000 /* Set readdir size */ |
| 94 | #define NFSMNT_XLATECOOKIE 0x00040000 /* 32<->64 dir cookie xlation */ |
| 95 | #define NFSMNT_NOAC 0x00080000 /* Turn off attribute cache */ |
| 96 | |
| 97 | #define NFSMNT_BITS "\177\20" \ |
| 98 | "b\00soft\0b\01wsize\0b\02rsize\0b\03timeo\0" \ |
| 99 | "b\04retrans\0b\05maxgrps\0b\06intr\0b\07noconn\0" \ |
| 100 | "b\10nqnfs\0b\11nfsv3\0b\12kerb\0b\13dumbtimr\0" \ |
| 101 | "b\14leaseterm\0b\15readahead\0b\16deadthresh\0b\17resvport\0" \ |
| 102 | "b\20rdirplus\0b\21readdirsize\0b\22xlatecookie\0b\23noac\0" |
| 103 | |
| 104 | /* |
| 105 | * NFS internal flags (nm_iflag) */ |
| 106 | |
| 107 | #define NFSMNT_HASWRITEVERF 0x00000001 /* Has write verifier for V3 */ |
| 108 | #define NFSMNT_GOTPATHCONF 0x00000002 /* Got the V3 pathconf info */ |
| 109 | #define NFSMNT_GOTFSINFO 0x00000004 /* Got the V3 fsinfo */ |
| 110 | #define NFSMNT_MNTD 0x00000008 /* Mnt server for mnt point */ |
| 111 | #define NFSMNT_DISMNT 0x00000020 /* Dismounted */ |
| 112 | #define NFSMNT_SNDLOCK 0x00000040 /* Send socket lock */ |
| 113 | #define NFSMNT_WANTSND 0x00000080 /* Want above */ |
| 114 | #define NFSMNT_RCVLOCK 0x00000100 /* Rcv socket lock */ |
| 115 | #define NFSMNT_WANTRCV 0x00000200 /* Want above */ |
| 116 | #define NFSMNT_WAITAUTH 0x00000400 /* Wait for authentication */ |
| 117 | #define NFSMNT_HASAUTH 0x00000800 /* Has authenticator */ |
| 118 | #define NFSMNT_WANTAUTH 0x00001000 /* Wants an authenticator */ |
| 119 | #define NFSMNT_AUTHERR 0x00002000 /* Authentication error */ |
| 120 | #define NFSMNT_SWAPCOOKIE 0x00004000 /* XDR encode dir cookies */ |
| 121 | #define NFSMNT_STALEWRITEVERF 0x00008000 /* Write verifier is changing */ |
| 122 | #define NFSMNT_WCCKLUDGE 0x00010000 /* see nfs_check_wccdata() */ |
| 123 | #define NFSMNT_DISMNTFORCE 0x00020000 /* force unmount requested */ |
| 124 | |
| 125 | #if defined(_KERNEL) && !defined(NFS_ARGS_ONLY) |
| 126 | /* |
| 127 | * Mount structure. |
| 128 | * One allocated on every NFS mount. |
| 129 | * Holds NFS specific information for mount. |
| 130 | */ |
| 131 | struct nfsmount { |
| 132 | kmutex_t nm_lock; /* Lock for this structure */ |
| 133 | kcondvar_t nm_rcvcv; |
| 134 | kcondvar_t nm_sndcv; |
| 135 | int nm_flag; /* Flags for soft/hard... */ |
| 136 | struct mount *nm_mountp; /* Vfs structure for this filesystem */ |
| 137 | int nm_numgrps; /* Max. size of groupslist */ |
| 138 | struct vnode *nm_vnode; |
| 139 | struct socket *nm_so; /* Rpc socket */ |
| 140 | int nm_sotype; /* Type of socket */ |
| 141 | int nm_soproto; /* and protocol */ |
| 142 | int nm_soflags; /* pr_flags for socket protocol */ |
| 143 | struct mbuf *nm_nam; /* Addr of server */ |
| 144 | int nm_timeo; /* Init timer for NFSMNT_DUMBTIMR */ |
| 145 | int nm_retry; /* Max retries */ |
| 146 | int nm_srtt[4]; /* Timers for rpcs */ |
| 147 | int nm_sdrtt[4]; |
| 148 | int nm_sent; /* Request send count */ |
| 149 | int nm_cwnd; /* Request send window */ |
| 150 | int nm_timeouts; /* Request timeouts */ |
| 151 | int nm_deadthresh; /* Threshold of timeouts-->dead server*/ |
| 152 | int nm_rsize; /* Max size of read rpc */ |
| 153 | int nm_wsize; /* Max size of write rpc */ |
| 154 | int nm_readdirsize; /* Size of a readdir rpc */ |
| 155 | int nm_readahead; /* Num. of blocks to readahead */ |
| 156 | uid_t nm_authuid; /* Uid for authenticator */ |
| 157 | int nm_authtype; /* Authenticator type */ |
| 158 | int nm_authlen; /* and length */ |
| 159 | char *nm_authstr; /* Authenticator string */ |
| 160 | char *nm_verfstr; /* and the verifier */ |
| 161 | int nm_verflen; |
| 162 | krwlock_t nm_writeverflock; /* lock for below */ |
| 163 | u_char nm_writeverf[NFSX_V3WRITEVERF]; /* V3 write verifier */ |
| 164 | NFSKERBKEY_T nm_key; /* and the session key */ |
| 165 | int nm_numuids; /* Number of nfsuid mappings */ |
| 166 | TAILQ_HEAD(, nfsuid) nm_uidlruhead; /* Lists of nfsuid mappings */ |
| 167 | LIST_HEAD(, nfsuid) nm_uidhashtbl[NFS_MUIDHASHSIZ]; |
| 168 | TAILQ_HEAD(, buf) nm_bufq; /* async io buffer queue */ |
| 169 | int nm_bufqlen; /* number of buffers in queue */ |
| 170 | kcondvar_t nm_aiocv; |
| 171 | int nm_bufqiods; /* number of iods processing queue */ |
| 172 | u_int64_t nm_maxfilesize; /* maximum file size */ |
| 173 | int nm_iflag; /* internal flags */ |
| 174 | int nm_waiters; /* number of waiting listeners.. */ |
| 175 | kcondvar_t nm_disconcv; |
| 176 | long nm_wcckludgetime; /* see nfs_check_wccdata() */ |
| 177 | struct io_stats *nm_stats; /* per nfs mount statistics */ |
| 178 | }; |
| 179 | |
| 180 | /* |
| 181 | * Convert mount ptr to nfsmount ptr. |
| 182 | */ |
| 183 | #define VFSTONFS(mp) ((struct nfsmount *)((mp)->mnt_data)) |
| 184 | |
| 185 | /* |
| 186 | * Prototypes for NFS mount operations |
| 187 | */ |
| 188 | VFS_PROTOS(nfs); |
| 189 | |
| 190 | int mountnfs(struct nfs_args *argp, struct mount *mp, |
| 191 | struct mbuf *nam, const char *pth, const char *hst, |
| 192 | struct vnode **vpp, struct lwp *p); |
| 193 | void nfs_decode_args(struct nfsmount *, struct nfs_args *, |
| 194 | struct lwp *l); |
| 195 | int nfs_fsinfo(struct nfsmount *, struct vnode *, kauth_cred_t, |
| 196 | struct lwp *); |
| 197 | |
| 198 | void nfs_vfs_init(void); |
| 199 | void nfs_vfs_done(void); |
| 200 | |
| 201 | #endif /* _KERNEL */ |
| 202 | |
| 203 | #endif |
| 204 | |