From 666343f7f055c064375d48bb9a608730d7145beb Mon Sep 17 00:00:00 2001 From: dfr Date: Tue, 27 Jun 1995 11:07:30 +0000 Subject: Changes to support version 3 of the NFS protocol. The version 2 support has been tested (client+server) against FreeBSD-2.0, IRIX 5.3 and FreeBSD-current (using a loopback mount). The version 2 support is stable AFAIK. The version 3 support has been tested with a loopback mount and minimally against an IRIX 5.3 server. It needs more testing and may have problems. I have patched amd to support the new variable length filehandles although it will still only use version 2 of the protocol. Before booting a kernel with these changes, nfs clients will need to at least build and install /usr/sbin/mount_nfs. Servers will need to build and install /usr/sbin/mountd. NFS diskless support is untested. Obtained from: Rick Macklem --- sys/nfs/nfs.h | 279 +++++++++++++++++++++++++++++++++++++++++++++++----------- 1 file changed, 226 insertions(+), 53 deletions(-) (limited to 'sys/nfs/nfs.h') diff --git a/sys/nfs/nfs.h b/sys/nfs/nfs.h index cbf80c6..e1a0f07 100644 --- a/sys/nfs/nfs.h +++ b/sys/nfs/nfs.h @@ -34,7 +34,7 @@ * SUCH DAMAGE. * * @(#)nfs.h 8.1 (Berkeley) 6/10/93 - * $Id: nfs.h,v 1.8 1994/11/02 00:11:00 wollman Exp $ + * $Id: nfs.h,v 1.9 1995/02/14 06:22:18 phk Exp $ */ #ifndef _NFS_NFS_H_ @@ -45,11 +45,12 @@ */ #define NFS_MAXIOVEC 34 -#define NFS_HZ 25 /* Ticks per second for NFS timeouts */ -#define NFS_TIMEO (1*NFS_HZ) /* Default timeout = 1 second */ -#define NFS_MINTIMEO (1*NFS_HZ) /* Min timeout to use */ -#define NFS_MAXTIMEO (60*NFS_HZ) /* Max timeout to backoff to */ -#define NFS_MINIDEMTIMEO (5*NFS_HZ) /* Min timeout for non-idempotent ops*/ +#define NFS_TICKINTVL 5 /* Desired time for a tick (msec) */ +#define NFS_HZ (hz / nfs_ticks) /* Ticks/sec */ +#define NFS_TIMEO (1 * NFS_HZ) /* Default timeout = 1 second */ +#define NFS_MINTIMEO (1 * NFS_HZ) /* Min timeout to use */ +#define NFS_MAXTIMEO (60 * NFS_HZ) /* Max timeout to backoff to */ +#define NFS_MINIDEMTIMEO (5 * NFS_HZ) /* Min timeout for non-idempotent ops*/ #define NFS_MAXREXMIT 100 /* Stop counting after this many */ #define NFS_MAXWINDOW 1024 /* Max number of outstanding requests */ #define NFS_RETRANS 10 /* Num of retrans for soft mounts */ @@ -62,13 +63,81 @@ #endif #define NFS_WSIZE 8192 /* Def. write data size <= 8192 */ #define NFS_RSIZE 8192 /* Def. read data size <= 8192 */ +#define NFS_READDIRSIZE 8192 /* Def. readdir size */ #define NFS_DEFRAHEAD 1 /* Def. read ahead # blocks */ #define NFS_MAXRAHEAD 4 /* Max. read ahead # blocks */ -#define NFS_MAXREADDIR NFS_MAXDATA /* Max. size of directory read */ #define NFS_MAXUIDHASH 64 /* Max. # of hashed uid entries/mp */ -#define NFS_MAXASYNCDAEMON 20 /* Max. number async_daemons runable */ -#define NFS_DIRBLKSIZ 1024 /* Size of an NFS directory block */ +#define NFS_MAXASYNCDAEMON 20 /* Max. number async_daemons runable */ +#define NFS_MAXGATHERDELAY 100 /* Max. write gather delay (msec) */ +#ifndef NFS_GATHERDELAY +#define NFS_GATHERDELAY 10 /* Default write gather delay (msec) */ +#endif +#define NFS_DIRBLKSIZ 4096 /* Must be a multiple of DIRBLKSIZ */ + +/* + * Oddballs + */ #define NMOD(a) ((a) % nfs_asyncdaemons) +#define NFS_CMPFH(n, f, s) \ + ((n)->n_fhsize == (s) && !bcmp((caddr_t)(n)->n_fhp, (caddr_t)(f), (s))) +#define NFS_ISV3(v) (VFSTONFS((v)->v_mount)->nm_flag & NFSMNT_NFSV3) +#define NFS_SRVMAXDATA(n) \ + (((n)->nd_flag & ND_NFSV3) ? (((n)->nd_nam2) ? \ + NFS_MAXDGRAMDATA : NFS_MAXDATA) : NFS_V2MAXDATA) + +/* + * XXX + * sys/buf.h should be editted to change B_APPENDWRITE --> B_NEEDCOMMIT, but + * until then... + * Same goes for sys/malloc.h, which needs M_NFSDIROFF, + * M_NFSRVDESC and M_NFSBIGFH added. + * The VA_EXCLUSIVE flag should be added for va_vaflags and set for an + * exclusive create. + * The B_INVAFTERWRITE flag should be set to whatever is required by the + * buffer cache code to say "Invalidate the block after it is written back". + */ +#ifndef B_NEEDCOMMIT +#define B_NEEDCOMMIT B_APPENDWRITE +#endif +#ifndef M_NFSRVDESC +#define M_NFSRVDESC M_TEMP +#endif +#ifndef M_NFSDIROFF +#define M_NFSDIROFF M_TEMP +#endif +#ifndef M_NFSBIGFH +#define M_NFSBIGFH M_TEMP +#endif +#ifndef VA_EXCLUSIVE +#define VA_EXCLUSIVE 0 +#endif +#ifdef __FreeBSD__ +#define B_INVAFTERWRITE B_NOCACHE +#else +#define B_INVAFTERWRITE B_INVAL +#endif + +/* + * These ifdefs try to handle the differences between the various 4.4BSD-Lite + * based vfs interfaces. + * btw: NetBSD-current does have a VOP_LEASDE(), but I don't know how to + * differentiate between NetBSD-1.0 and NetBSD-current, so.. + * I also don't know about BSDi's 2.0 release. + */ +#if !defined(HAS_VOPLEASE) && !defined(__FreeBSD__) && !defined(__NetBSD__) +#define HAS_VOPLEASE 1 +#endif +#if !defined(HAS_VOPREVOKE) && !defined(__FreeBSD__) && !defined(__NetBSD__) +#define HAS_VOPREVOKE 1 +#endif + +/* + * The IO_METASYNC flag should be implemented for local file systems. + * (Until then, it is nothin at all.) + */ +#ifndef IO_METASYNC +#define IO_METASYNC 0 +#endif /* * Set the attribute timeout based on how recently the file has been modified. @@ -80,6 +149,20 @@ (time.tv_sec - (np)->n_mtime) / 10)) /* + * Expected allocation sizes for major data structures. If the actual size + * of the structure exceeds these sizes, then malloc() will be allocating + * almost twice the memory required. This is used in nfs_init() to warn + * the sysadmin that the size of a structure should be reduced. + * (These sizes are always a power of 2. If the kernel malloc() changes + * to one that does not allocate space in powers of 2 size, then this all + * becomes bunk!) + */ +#define NFS_NODEALLOC 256 +#define NFS_MNTALLOC 512 +#define NFS_SVCALLOC 256 +#define NFS_UIDALLOC 128 + +/* * Structures for the nfssvc(2) syscall. Not that anyone but nfsd and mount_nfs * should ever try and use it. */ @@ -95,7 +178,12 @@ struct nfsd_srvargs { u_long nsd_haddr; /* Ip address of client */ struct ucred nsd_cr; /* Cred. uid maps to */ int nsd_authlen; /* Length of auth string (ret) */ - char *nsd_authstr; /* Auth string (ret) */ + u_char *nsd_authstr; /* Auth string (ret) */ + int nsd_verflen; /* and the verfier */ + u_char *nsd_verfstr; + struct timeval nsd_timestamp; /* timestamp from verifier */ + u_long nsd_ttl; /* credential ttl (sec) */ + NFSKERBKEY_T nsd_key; /* Session key */ }; struct nfsd_cargs { @@ -103,7 +191,10 @@ struct nfsd_cargs { uid_t ncd_authuid; /* Effective uid */ int ncd_authtype; /* Type of authenticator */ int ncd_authlen; /* Length of authenticator string */ - char *ncd_authstr; /* Authenticator string */ + u_char *ncd_authstr; /* Authenticator string */ + int ncd_verflen; /* and the verifier */ + u_char *ncd_verfstr; + NFSKERBKEY_T ncd_key; /* Session key */ }; /* @@ -142,6 +233,7 @@ struct nfsstats { int srvnqnfs_leases; int srvnqnfs_maxleases; int srvnqnfs_getleases; + int srvvop_writes; }; /* @@ -173,7 +265,7 @@ struct nfsstats { * such as SIGALRM will not expect file I/O system calls to be interrupted * by them and break. */ -#ifdef KERNEL +#if defined(KERNEL) || defined(_KERNEL) struct uio; struct buf; struct vattr; struct nameidata; /* XXX */ @@ -224,17 +316,29 @@ TAILQ_HEAD(, nfsreq) nfs_reqq; #define R_MUSTRESEND 0x40 /* Must resend request */ #define R_GETONEREP 0x80 /* Probe for one reply only */ -extern struct nfsstats nfsstats; - /* * A list of nfssvc_sock structures is maintained with all the sockets * that require service by the nfsd. * The nfsuid structs hang off of the nfssvc_sock structs in both lru * and uid hash lists. */ -#define NUIDHASHSIZ 32 +#ifndef NFS_UIDHASHSIZ +#define NFS_UIDHASHSIZ 29 /* Tune the size of nfssvc_sock with this */ +#endif #define NUIDHASH(sock, uid) \ - (&(sock)->ns_uidhashtbl[(uid) & (sock)->ns_uidhash]) + (&(sock)->ns_uidhashtbl[(uid) % NFS_UIDHASHSIZ]) +#ifndef NFS_WDELAYHASHSIZ +#define NFS_WDELAYHASHSIZ 16 /* and with this */ +#endif +#define NWDELAYHASH(sock, f) \ + (&(sock)->ns_wdelayhashtbl[(*((u_long *)(f))) % NFS_WDELAYHASHSIZ]) +#ifndef NFS_MUIDHASHSIZ +#define NFS_MUIDHASHSIZ 67 /* Tune the size of nfsmount with this */ +#endif +#define NMUIDHASH(nmp, uid) \ + (&(nmp)->nm_uidhashtbl[(uid) % NFS_MUIDHASHSIZ]) +#define NFSNOHASH(fhsum) \ + (&nfsnodehashtbl[(fhsum) & nfsnodehash]) /* * Network address hash list element @@ -248,35 +352,41 @@ struct nfsuid { TAILQ_ENTRY(nfsuid) nu_lru; /* LRU chain */ LIST_ENTRY(nfsuid) nu_hash; /* Hash list */ int nu_flag; /* Flags */ - uid_t nu_uid; /* Uid mapped by this entry */ union nethostaddr nu_haddr; /* Host addr. for dgram sockets */ struct ucred nu_cr; /* Cred uid mapped to */ + int nu_expire; /* Expiry time (sec) */ + struct timeval nu_timestamp; /* Kerb. timestamp */ + u_long nu_nickname; /* Nickname on server */ + NFSKERBKEY_T nu_key; /* and session key */ }; #define nu_inetaddr nu_haddr.had_inetaddr #define nu_nam nu_haddr.had_nam /* Bits for nu_flag */ #define NU_INETADDR 0x1 +#define NU_NAM 0x2 +#define NU_NETFAM(u) (((u)->nu_flag & NU_INETADDR) ? AF_INET : AF_ISO) struct nfssvc_sock { TAILQ_ENTRY(nfssvc_sock) ns_chain; /* List of all nfssvc_sock's */ TAILQ_HEAD(, nfsuid) ns_uidlruhead; - LIST_HEAD(, nfsuid) *ns_uidhashtbl; - u_long ns_uidhash; - - int ns_flag; - u_long ns_sref; struct file *ns_fp; struct socket *ns_so; - int ns_solock; struct mbuf *ns_nam; - int ns_cc; struct mbuf *ns_raw; struct mbuf *ns_rawend; - int ns_reclen; struct mbuf *ns_rec; struct mbuf *ns_recend; + struct mbuf *ns_frag; + int ns_flag; + int ns_solock; + int ns_cc; + int ns_reclen; int ns_numuids; + u_long ns_sref; + LIST_HEAD(, nfsrv_descript) ns_tq; /* Write gather lists */ + LIST_HEAD(, nfsuid) ns_uidhashtbl[NFS_UIDHASHSIZ]; + LIST_HEAD(nfsrvw_delayhash, nfsrv_descript) ns_wdelayhashtbl[NFS_WDELAYHASHSIZ]; }; /* Bits for "ns_flag" */ @@ -285,6 +395,7 @@ struct nfssvc_sock { #define SLP_NEEDQ 0x04 #define SLP_DISCONN 0x08 #define SLP_GETSTREAM 0x10 +#define SLP_LASTFRAG 0x20 #define SLP_ALLFLAGS 0xff TAILQ_HEAD(, nfssvc_sock) nfssvc_sockhead; @@ -296,73 +407,124 @@ int nfssvc_sockhead_flag; * One of these structures is allocated for each nfsd. */ struct nfsd { - TAILQ_ENTRY(nfsd) nd_chain; /* List of all nfsd's */ - int nd_flag; /* NFSD_ flags */ - struct nfssvc_sock *nd_slp; /* Current socket */ - struct mbuf *nd_nam; /* Client addr for datagram req. */ - struct mbuf *nd_mrep; /* Req. mbuf list */ - struct mbuf *nd_md; - caddr_t nd_dpos; /* Position in list */ - int nd_procnum; /* RPC procedure number */ - u_long nd_retxid; /* RPC xid */ - int nd_repstat; /* Reply status value */ - struct ucred nd_cr; /* Credentials for req. */ - int nd_nqlflag; /* Leasing flag */ - u_long nd_duration; /* Lease duration */ - int nd_authlen; /* Authenticator len */ - u_char nd_authstr[RPCAUTH_MAXSIZ]; /* Authenticator data */ - struct proc *nd_procp; /* Proc ptr */ + TAILQ_ENTRY(nfsd) nfsd_chain; /* List of all nfsd's */ + int nfsd_flag; /* NFSD_ flags */ + struct nfssvc_sock *nfsd_slp; /* Current socket */ + int nfsd_authlen; /* Authenticator len */ + u_char nfsd_authstr[RPCAUTH_MAXSIZ]; /* Authenticator data */ + int nfsd_verflen; /* and the Verifier */ + u_char nfsd_verfstr[RPCVERF_MAXSIZ]; + struct proc *nfsd_procp; /* Proc ptr */ + struct nfsrv_descript *nfsd_nd; /* Associated nfsrv_descript */ }; -/* Bits for "nd_flag" */ +/* Bits for "nfsd_flag" */ #define NFSD_WAITING 0x01 #define NFSD_REQINPROG 0x02 #define NFSD_NEEDAUTH 0x04 #define NFSD_AUTHFAIL 0x08 +/* + * This structure is used by the server for describing each request. + * Some fields are used only when write request gathering is performed. + */ +struct nfsrv_descript { + u_quad_t nd_time; /* Write deadline (usec) */ + off_t nd_off; /* Start byte offset */ + off_t nd_eoff; /* and end byte offset */ + LIST_ENTRY(nfsrv_descript) nd_hash; /* Hash list */ + LIST_ENTRY(nfsrv_descript) nd_tq; /* and timer list */ + LIST_HEAD(,nfsrv_descript) nd_coalesce; /* coalesced writes */ + struct mbuf *nd_mrep; /* Request mbuf list */ + struct mbuf *nd_md; /* Current dissect mbuf */ + struct mbuf *nd_mreq; /* Reply mbuf list */ + struct mbuf *nd_nam; /* and socket addr */ + struct mbuf *nd_nam2; /* return socket addr */ + caddr_t nd_dpos; /* Current dissect pos */ + int nd_procnum; /* RPC # */ + int nd_stable; /* storage type */ + int nd_flag; /* nd_flag */ + int nd_len; /* Length of this write */ + int nd_repstat; /* Reply status */ + u_long nd_retxid; /* Reply xid */ + u_long nd_duration; /* Lease duration */ + struct timeval nd_starttime; /* Time RPC initiated */ + fhandle_t nd_fh; /* File handle */ + struct ucred nd_cr; /* Credentials */ +}; + +/* Bits for "nd_flag" */ +#define ND_READ LEASE_READ +#define ND_WRITE LEASE_WRITE +#define ND_CHECK 0x04 +#define ND_LEASE (ND_READ | ND_WRITE | ND_CHECK) +#define ND_NFSV3 0x08 +#define ND_NQNFS 0x10 +#define ND_KERBNICK 0x20 +#define ND_KERBFULL 0x40 +#define ND_KERBAUTH (ND_KERBNICK | ND_KERBFULL) + TAILQ_HEAD(, nfsd) nfsd_head; int nfsd_head_flag; #define NFSD_CHECKSLP 0x01 +/* + * These macros compare nfsrv_descript structures. + */ +#define NFSW_CONTIG(o, n) \ + ((o)->nd_eoff >= (n)->nd_off && \ + !bcmp((caddr_t)&(o)->nd_fh, (caddr_t)&(n)->nd_fh, NFSX_V3FH)) + +#define NFSW_SAMECRED(o, n) \ + (((o)->nd_flag & ND_KERBAUTH) == ((n)->nd_flag & ND_KERBAUTH) && \ + !bcmp((caddr_t)&(o)->nd_cr, (caddr_t)&(n)->nd_cr, \ + sizeof (struct ucred))) + int nfs_reply __P((struct nfsreq *)); -int nfs_getreq __P((struct nfsd *,int)); +int nfs_getreq __P((struct nfsrv_descript *,struct nfsd *,int)); int nfs_send __P((struct socket *,struct mbuf *,struct mbuf *,struct nfsreq *)); -int nfs_rephead __P((int,struct nfsd *,int,int,u_quad_t *,struct mbuf **,struct mbuf **,caddr_t *)); +int nfs_rephead __P((int,struct nfsrv_descript *,struct nfssvc_sock *,int,int,u_quad_t *,struct mbuf **,struct mbuf **,caddr_t *)); int nfs_sndlock __P((int *,struct nfsreq *)); int nfs_disct __P((struct mbuf **,caddr_t *,int,int,caddr_t *)); int nfs_vinvalbuf __P((struct vnode *,int,struct ucred *,struct proc *,int)); int nfs_readrpc __P((struct vnode *,struct uio *,struct ucred *)); -int nfs_writerpc __P((struct vnode *,struct uio *,struct ucred *,int)); +int nfs_writerpc __P((struct vnode *,struct uio *,struct ucred *,int *,int *)); int nfs_readdirrpc __P((register struct vnode *,struct uio *,struct ucred *)); +int nfs_setattrrpc __P((struct vnode *,struct vattr *,struct ucred *,struct proc *)); int nfs_asyncio __P((struct buf *,struct ucred *)); int nfs_doio __P((struct buf *,struct ucred *,struct proc *)); int nfs_readlinkrpc __P((struct vnode *,struct uio *,struct ucred *)); int nfs_sigintr __P((struct nfsmount *,struct nfsreq *r,struct proc *)); -int nfs_readdirlookrpc __P((struct vnode *,register struct uio *,struct ucred *)); +int nfs_readdirplusrpc __P((struct vnode *,register struct uio *,struct ucred *)); int nfsm_disct __P((struct mbuf **,caddr_t *,int,int,caddr_t *)); -int nfsrv_fhtovp __P((fhandle_t *,int,struct vnode **,struct ucred *,struct nfssvc_sock *,struct mbuf *,int *)); +void nfsm_srvfattr __P((struct nfsrv_descript *,struct vattr *,struct nfs_fattr *)); +void nfsm_srvwcc __P((struct nfsrv_descript *,int,struct vattr *,int,struct vattr *,struct mbuf **,char **)); +void nfsm_srvpostopattr __P((struct nfsrv_descript *,int,struct vattr *,struct mbuf **,char **)); +int nfsrv_fhtovp __P((fhandle_t *,int,struct vnode **,struct ucred *,struct nfssvc_sock *,struct mbuf *,int *,int)); int nfsrv_access __P((struct vnode *,int,struct ucred *,int,struct proc *)); int netaddr_match __P((int,union nethostaddr *,struct mbuf *)); int nfs_request __P((struct vnode *,struct mbuf *,int,struct proc *,struct ucred *,struct mbuf **,struct mbuf **,caddr_t *)); int nfs_loadattrcache __P((struct vnode **,struct mbuf **,caddr_t *,struct vattr *)); -int nfs_namei __P((struct nameidata *,fhandle_t *,int,struct nfssvc_sock *,struct mbuf *,struct mbuf **,caddr_t *,struct proc *)); +int nfs_namei __P((struct nameidata *,fhandle_t *,int,struct nfssvc_sock *,struct mbuf *,struct mbuf **,caddr_t *,struct vnode **,struct proc *,int)); void nfsm_adj __P((struct mbuf *,int,int)); int nfsm_mbuftouio __P((struct mbuf **,struct uio *,int,caddr_t *)); void nfsrv_initcache __P((void)); int nfs_rcvlock __P((struct nfsreq *)); -int nfs_getauth __P((struct nfsmount *,struct nfsreq *,struct ucred *,int *,char **,int *)); +int nfs_getauth __P((struct nfsmount *,struct nfsreq *,struct ucred *,char **,int *,char *,int *,NFSKERBKEY_T)); +int nfs_getnickauth __P((struct nfsmount *,struct ucred *,char **,int *,char *,int)); +int nfs_savenickauth __P((struct nfsmount *,struct ucred *,int,NFSKERBKEY_T,struct mbuf **,char **,struct mbuf *)); int nfs_msg __P((struct proc *,char *,char *)); int nfs_adv __P((struct mbuf **,caddr_t *,int,int)); int nfsrv_getstream __P((struct nfssvc_sock *,int)); void nfs_nhinit __P((void)); void nfs_timer __P((void*)); -struct nfsnodehashhead * nfs_hash __P((nfsv2fh_t *)); +u_long nfs_hash __P((nfsfh_t *,int)); int nfssvc_iod __P((struct proc *)); int nfssvc_nfsd __P((struct nfsd_srvargs *,caddr_t,struct proc *)); int nfssvc_addsock __P((struct file *,struct mbuf *)); -int nfsrv_dorec __P((struct nfssvc_sock *,struct nfsd *)); -int nfsrv_getcache __P((struct mbuf *,struct nfsd *,struct mbuf **)); -void nfsrv_updatecache __P((struct mbuf *,struct nfsd *,int,struct mbuf *)); +int nfsrv_dorec __P((struct nfssvc_sock *,struct nfsd *,struct nfsrv_descript **)); +int nfsrv_getcache __P((struct nfsrv_descript *,struct nfssvc_sock *,struct mbuf **)); +void nfsrv_updatecache __P((struct nfsrv_descript *,int,struct mbuf *)); int mountnfs __P((struct nfs_args *,struct mount *,struct mbuf *,char *,char *,struct vnode **)); int nfs_connect __P((struct nfsmount *,struct nfsreq *)); int nfs_getattrcache __P((struct vnode *,struct vattr *)); @@ -370,9 +532,20 @@ int nfsm_strtmbuf __P((struct mbuf **,char **,char *,long)); int nfs_bioread __P((struct vnode *,struct uio *,int,struct ucred *)); int nfsm_uiotombuf __P((struct uio *,struct mbuf **,int,caddr_t *)); void nfsrv_init __P((int)); +void nfs_clearcommit __P((struct mount *)); +int nfsrv_errmap __P((struct nfsrv_descript *, int)); +void nfsrvw_coalesce __P((struct nfsrv_descript *,struct nfsrv_descript *)); +void nfsrvw_sort __P((gid_t [],int)); +void nfsrv_setcred __P((struct ucred *,struct ucred *)); +int nfs_flush __P((struct vnode *,struct ucred *,int,struct proc *,int)); +int nfs_writebp __P((struct buf *,int)); int nfsrv_vput __P(( struct vnode * )); int nfsrv_vrele __P(( struct vnode * )); int nfsrv_vmio __P(( struct vnode * )); +int nfsrv_writegather __P((struct nfsrv_descript **, struct nfssvc_sock *, + struct proc *, struct mbuf **)); +int nfs_fsinfo __P((struct nfsmount *, struct vnode *, struct ucred *, + struct proc *p)); #endif /* KERNEL */ -- cgit v1.1