303 lines
9.6 KiB
C
303 lines
9.6 KiB
C
/*
|
|
* Copyright (c) 1989, 1993
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to Berkeley by
|
|
* Rick Macklem at The University of Guelph.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the University of
|
|
* California, Berkeley and its contributors.
|
|
* 4. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* @(#)nfs.h 8.1 (Berkeley) 6/10/93
|
|
* $Id: nfs.h,v 1.2 1994/08/02 07:52:04 davidg Exp $
|
|
*/
|
|
|
|
/*
|
|
* Tunable constants for nfs
|
|
*/
|
|
|
|
#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_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 */
|
|
#define NFS_MAXGRPS 16 /* Max. size of groups list */
|
|
#ifndef NFS_MINATTRTIMO
|
|
#define NFS_MINATTRTIMO 5 /* Attribute cache timeout in sec */
|
|
#endif
|
|
#ifndef NFS_MAXATTRTIMO
|
|
#define NFS_MAXATTRTIMO 60
|
|
#endif
|
|
#define NFS_WSIZE 8192 /* Def. write data size <= 8192 */
|
|
#define NFS_RSIZE 8192 /* Def. read data size <= 8192 */
|
|
#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 NMOD(a) ((a) % nfs_asyncdaemons)
|
|
|
|
/*
|
|
* Set the attribute timeout based on how recently the file has been modified.
|
|
*/
|
|
#define NFS_ATTRTIMEO(np) \
|
|
((((np)->n_flag & NMODIFIED) || \
|
|
(time.tv_sec - (np)->n_mtime) / 10 < NFS_MINATTRTIMO) ? NFS_MINATTRTIMO : \
|
|
((time.tv_sec - (np)->n_mtime) / 10 > NFS_MAXATTRTIMO ? NFS_MAXATTRTIMO : \
|
|
(time.tv_sec - (np)->n_mtime) / 10))
|
|
|
|
/*
|
|
* Structures for the nfssvc(2) syscall. Not that anyone but nfsd and mount_nfs
|
|
* should ever try and use it.
|
|
*/
|
|
struct nfsd_args {
|
|
int sock; /* Socket to serve */
|
|
caddr_t name; /* Client address for connection based sockets */
|
|
int namelen; /* Length of name */
|
|
};
|
|
|
|
struct nfsd_srvargs {
|
|
struct nfsd *nsd_nfsd; /* Pointer to in kernel nfsd struct */
|
|
uid_t nsd_uid; /* Effective uid mapped to cred */
|
|
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) */
|
|
};
|
|
|
|
struct nfsd_cargs {
|
|
char *ncd_dirp; /* Mount dir path */
|
|
uid_t ncd_authuid; /* Effective uid */
|
|
int ncd_authtype; /* Type of authenticator */
|
|
int ncd_authlen; /* Length of authenticator string */
|
|
char *ncd_authstr; /* Authenticator string */
|
|
};
|
|
|
|
/*
|
|
* Stats structure
|
|
*/
|
|
struct nfsstats {
|
|
int attrcache_hits;
|
|
int attrcache_misses;
|
|
int lookupcache_hits;
|
|
int lookupcache_misses;
|
|
int direofcache_hits;
|
|
int direofcache_misses;
|
|
int biocache_reads;
|
|
int read_bios;
|
|
int read_physios;
|
|
int biocache_writes;
|
|
int write_bios;
|
|
int write_physios;
|
|
int biocache_readlinks;
|
|
int readlink_bios;
|
|
int biocache_readdirs;
|
|
int readdir_bios;
|
|
int rpccnt[NFS_NPROCS];
|
|
int rpcretries;
|
|
int srvrpccnt[NFS_NPROCS];
|
|
int srvrpc_errs;
|
|
int srv_errs;
|
|
int rpcrequests;
|
|
int rpctimeouts;
|
|
int rpcunexpected;
|
|
int rpcinvalid;
|
|
int srvcache_inproghits;
|
|
int srvcache_idemdonehits;
|
|
int srvcache_nonidemdonehits;
|
|
int srvcache_misses;
|
|
int srvnqnfs_leases;
|
|
int srvnqnfs_maxleases;
|
|
int srvnqnfs_getleases;
|
|
};
|
|
|
|
/*
|
|
* Flags for nfssvc() system call.
|
|
*/
|
|
#define NFSSVC_BIOD 0x002
|
|
#define NFSSVC_NFSD 0x004
|
|
#define NFSSVC_ADDSOCK 0x008
|
|
#define NFSSVC_AUTHIN 0x010
|
|
#define NFSSVC_GOTAUTH 0x040
|
|
#define NFSSVC_AUTHINFAIL 0x080
|
|
#define NFSSVC_MNTD 0x100
|
|
|
|
/*
|
|
* The set of signals the interrupt an I/O in progress for NFSMNT_INT mounts.
|
|
* What should be in this set is open to debate, but I believe that since
|
|
* I/O system calls on ufs are never interrupted by signals the set should
|
|
* be minimal. My reasoning is that many current programs that use signals
|
|
* such as SIGALRM will not expect file I/O system calls to be interrupted
|
|
* by them and break.
|
|
*/
|
|
#ifdef KERNEL
|
|
#define NFSINT_SIGMASK (sigmask(SIGINT)|sigmask(SIGTERM)|sigmask(SIGKILL)| \
|
|
sigmask(SIGHUP)|sigmask(SIGQUIT))
|
|
|
|
/*
|
|
* Socket errors ignored for connectionless sockets??
|
|
* For now, ignore them all
|
|
*/
|
|
#define NFSIGNORE_SOERROR(s, e) \
|
|
((e) != EINTR && (e) != ERESTART && (e) != EWOULDBLOCK && \
|
|
((s) & PR_CONNREQUIRED) == 0)
|
|
|
|
/*
|
|
* Nfs outstanding request list element
|
|
*/
|
|
struct nfsreq {
|
|
struct nfsreq *r_next;
|
|
struct nfsreq *r_prev;
|
|
struct mbuf *r_mreq;
|
|
struct mbuf *r_mrep;
|
|
struct mbuf *r_md;
|
|
caddr_t r_dpos;
|
|
struct nfsmount *r_nmp;
|
|
struct vnode *r_vp;
|
|
u_long r_xid;
|
|
int r_flags; /* flags on request, see below */
|
|
int r_retry; /* max retransmission count */
|
|
int r_rexmit; /* current retrans count */
|
|
int r_timer; /* tick counter on reply */
|
|
int r_procnum; /* NFS procedure number */
|
|
int r_rtt; /* RTT for rpc */
|
|
struct proc *r_procp; /* Proc that did I/O system call */
|
|
};
|
|
|
|
/* Flag values for r_flags */
|
|
#define R_TIMING 0x01 /* timing request (in mntp) */
|
|
#define R_SENT 0x02 /* request has been sent */
|
|
#define R_SOFTTERM 0x04 /* soft mnt, too many retries */
|
|
#define R_INTR 0x08 /* intr mnt, signal pending */
|
|
#define R_SOCKERR 0x10 /* Fatal error on socket */
|
|
#define R_TPRINTFMSG 0x20 /* Did a tprintf msg. */
|
|
#define R_MUSTRESEND 0x40 /* Must resend request */
|
|
#define R_GETONEREP 0x80 /* Probe for one reply only */
|
|
|
|
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
|
|
#define NUIDHASH(uid) ((uid) & (NUIDHASHSIZ - 1))
|
|
|
|
/*
|
|
* Network address hash list element
|
|
*/
|
|
union nethostaddr {
|
|
u_long had_inetaddr;
|
|
struct mbuf *had_nam;
|
|
};
|
|
|
|
struct nfsuid {
|
|
struct nfsuid *nu_lrunext; /* MUST be first */
|
|
struct nfsuid *nu_lruprev;
|
|
struct nfsuid *nu_hnext;
|
|
struct nfsuid *nu_hprev;
|
|
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 */
|
|
};
|
|
|
|
#define nu_inetaddr nu_haddr.had_inetaddr
|
|
#define nu_nam nu_haddr.had_nam
|
|
/* Bits for nu_flag */
|
|
#define NU_INETADDR 0x1
|
|
|
|
struct nfssvc_sock {
|
|
struct nfsuid *ns_lrunext; /* MUST be first */
|
|
struct nfsuid *ns_lruprev;
|
|
struct nfssvc_sock *ns_next;
|
|
struct nfssvc_sock *ns_prev;
|
|
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;
|
|
int ns_numuids;
|
|
struct nfsuid *ns_uidh[NUIDHASHSIZ];
|
|
};
|
|
|
|
/* Bits for "ns_flag" */
|
|
#define SLP_VALID 0x01
|
|
#define SLP_DOREC 0x02
|
|
#define SLP_NEEDQ 0x04
|
|
#define SLP_DISCONN 0x08
|
|
#define SLP_GETSTREAM 0x10
|
|
#define SLP_INIT 0x20
|
|
#define SLP_WANTINIT 0x40
|
|
|
|
#define SLP_ALLFLAGS 0xff
|
|
|
|
/*
|
|
* One of these structures is allocated for each nfsd.
|
|
*/
|
|
struct nfsd {
|
|
struct nfsd *nd_next; /* Must be first */
|
|
struct nfsd *nd_prev;
|
|
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 */
|
|
int nd_duration; /* Lease duration */
|
|
int nd_authlen; /* Authenticator len */
|
|
u_char nd_authstr[RPCAUTH_MAXSIZ]; /* Authenticator data */
|
|
struct proc *nd_procp; /* Proc ptr */
|
|
};
|
|
|
|
#define NFSD_WAITING 0x01
|
|
#define NFSD_CHECKSLP 0x02
|
|
#define NFSD_REQINPROG 0x04
|
|
#define NFSD_NEEDAUTH 0x08
|
|
#define NFSD_AUTHFAIL 0x10
|
|
#endif /* KERNEL */
|