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freebsd-dev/sys/fs/nfs/nfsport.h
Rick Macklem eeb1f3ed51 Fix the NFSv4 client to safely find processes. 
r340744 broke the NFSv4 client, because it replaced pfind_locked() with a
call to pfind(), since pfind() acquires the sx lock for the pid hash and
the NFSv4 already holds a mutex when it does the call.
The patch fixes the problem by recreating a pfind_any_locked() and adding the
functions pidhash_slockall() and pidhash_sunlockall to acquire/release
all of the pid hash locks.
These functions are then used by the NFSv4 client instead of acquiring
the allproc_lock and calling pfind().

Reviewed by:	kib, mjg
MFC after:	2 weeks
Differential Revision:	https://reviews.freebsd.org/D19887
2019-04-15 01:27:15 +00:00

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/*-
* SPDX-License-Identifier: BSD-3-Clause
*
* 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. 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.
*
* $FreeBSD$
*/
#ifndef _NFS_NFSPORT_H_
#define _NFS_NFSPORT_H_
/*
* In general, I'm not fond of #includes in .h files, but this seems
* to be the cleanest way to handle #include files for the ports.
*/
#ifdef _KERNEL
#include <sys/unistd.h>
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/conf.h>
#include <sys/dirent.h>
#include <sys/domain.h>
#include <sys/fcntl.h>
#include <sys/file.h>
#include <sys/filedesc.h>
#include <sys/jail.h>
#include <sys/kernel.h>
#include <sys/lockf.h>
#include <sys/malloc.h>
#include <sys/mbuf.h>
#include <sys/mount.h>
#include <sys/mutex.h>
#include <sys/namei.h>
#include <sys/proc.h>
#include <sys/protosw.h>
#include <sys/reboot.h>
#include <sys/resourcevar.h>
#include <sys/signalvar.h>
#include <sys/socket.h>
#include <sys/socketvar.h>
#include <sys/stat.h>
#include <sys/syslog.h>
#include <sys/sysproto.h>
#include <sys/time.h>
#include <sys/uio.h>
#include <sys/vnode.h>
#include <sys/bio.h>
#include <sys/buf.h>
#include <sys/acl.h>
#include <sys/module.h>
#include <sys/sysent.h>
#include <sys/syscall.h>
#include <sys/priv.h>
#include <sys/kthread.h>
#include <sys/syscallsubr.h>
#include <net/if.h>
#include <net/if_var.h>
#include <net/radix.h>
#include <net/route.h>
#include <net/if_dl.h>
#include <netinet/in.h>
#include <netinet/in_pcb.h>
#include <netinet/in_systm.h>
#include <netinet/in_var.h>
#include <netinet/ip.h>
#include <netinet/ip_var.h>
#include <netinet/tcp.h>
#include <netinet/tcp_fsm.h>
#include <netinet/tcp_seq.h>
#include <netinet/tcp_timer.h>
#include <netinet/tcp_var.h>
#include <machine/in_cksum.h>
#include <crypto/des/des.h>
#include <sys/md5.h>
#include <rpc/rpc.h>
#include <rpc/rpcsec_gss.h>
/*
* For Darwin, these functions should be "static" when built in a kext.
* (This is always defined as nil otherwise.)
*/
#define APPLESTATIC
#include <ufs/ufs/dir.h>
#include <ufs/ufs/quota.h>
#include <ufs/ufs/inode.h>
#include <ufs/ufs/extattr.h>
#include <ufs/ufs/ufsmount.h>
#include <vm/uma.h>
#include <vm/vm.h>
#include <vm/vm_object.h>
#include <vm/vm_extern.h>
#include <nfs/nfssvc.h>
#include "opt_nfs.h"
#include "opt_ufs.h"
/*
* These types must be defined before the nfs includes.
*/
#define NFSSOCKADDR_T struct sockaddr *
#define NFSPROC_T struct thread
#define NFSDEV_T dev_t
#define NFSSVCARGS nfssvc_args
#define NFSACL_T struct acl
/*
* These should be defined as the types used for the corresponding VOP's
* argument type.
*/
#define NFS_ACCESS_ARGS struct vop_access_args
#define NFS_OPEN_ARGS struct vop_open_args
#define NFS_GETATTR_ARGS struct vop_getattr_args
#define NFS_LOOKUP_ARGS struct vop_lookup_args
#define NFS_READDIR_ARGS struct vop_readdir_args
/*
* Allocate mbufs. Must succeed and never set the mbuf ptr to NULL.
*/
#define NFSMGET(m) do { \
MGET((m), M_WAITOK, MT_DATA); \
while ((m) == NULL ) { \
(void) nfs_catnap(PZERO, 0, "nfsmget"); \
MGET((m), M_WAITOK, MT_DATA); \
} \
} while (0)
#define NFSMGETHDR(m) do { \
MGETHDR((m), M_WAITOK, MT_DATA); \
while ((m) == NULL ) { \
(void) nfs_catnap(PZERO, 0, "nfsmget"); \
MGETHDR((m), M_WAITOK, MT_DATA); \
} \
} while (0)
#define NFSMCLGET(m, w) do { \
MGET((m), M_WAITOK, MT_DATA); \
while ((m) == NULL ) { \
(void) nfs_catnap(PZERO, 0, "nfsmget"); \
MGET((m), M_WAITOK, MT_DATA); \
} \
MCLGET((m), (w)); \
} while (0)
#define NFSMCLGETHDR(m, w) do { \
MGETHDR((m), M_WAITOK, MT_DATA); \
while ((m) == NULL ) { \
(void) nfs_catnap(PZERO, 0, "nfsmget"); \
MGETHDR((m), M_WAITOK, MT_DATA); \
} \
} while (0)
#define NFSMTOD mtod
/*
* Client side constant for size of a lockowner name.
*/
#define NFSV4CL_LOCKNAMELEN 12
/*
* Type for a mutex lock.
*/
#define NFSMUTEX_T struct mtx
#endif /* _KERNEL */
/*
* NFSv4 Operation numbers.
*/
#define NFSV4OP_ACCESS 3
#define NFSV4OP_CLOSE 4
#define NFSV4OP_COMMIT 5
#define NFSV4OP_CREATE 6
#define NFSV4OP_DELEGPURGE 7
#define NFSV4OP_DELEGRETURN 8
#define NFSV4OP_GETATTR 9
#define NFSV4OP_GETFH 10
#define NFSV4OP_LINK 11
#define NFSV4OP_LOCK 12
#define NFSV4OP_LOCKT 13
#define NFSV4OP_LOCKU 14
#define NFSV4OP_LOOKUP 15
#define NFSV4OP_LOOKUPP 16
#define NFSV4OP_NVERIFY 17
#define NFSV4OP_OPEN 18
#define NFSV4OP_OPENATTR 19
#define NFSV4OP_OPENCONFIRM 20
#define NFSV4OP_OPENDOWNGRADE 21
#define NFSV4OP_PUTFH 22
#define NFSV4OP_PUTPUBFH 23
#define NFSV4OP_PUTROOTFH 24
#define NFSV4OP_READ 25
#define NFSV4OP_READDIR 26
#define NFSV4OP_READLINK 27
#define NFSV4OP_REMOVE 28
#define NFSV4OP_RENAME 29
#define NFSV4OP_RENEW 30
#define NFSV4OP_RESTOREFH 31
#define NFSV4OP_SAVEFH 32
#define NFSV4OP_SECINFO 33
#define NFSV4OP_SETATTR 34
#define NFSV4OP_SETCLIENTID 35
#define NFSV4OP_SETCLIENTIDCFRM 36
#define NFSV4OP_VERIFY 37
#define NFSV4OP_WRITE 38
#define NFSV4OP_RELEASELCKOWN 39
/*
* Must be one greater than the last Operation#.
*/
#define NFSV4OP_NOPS 40
/*
* Additional Ops for NFSv4.1.
*/
#define NFSV4OP_BACKCHANNELCTL 40
#define NFSV4OP_BINDCONNTOSESS 41
#define NFSV4OP_EXCHANGEID 42
#define NFSV4OP_CREATESESSION 43
#define NFSV4OP_DESTROYSESSION 44
#define NFSV4OP_FREESTATEID 45
#define NFSV4OP_GETDIRDELEG 46
#define NFSV4OP_GETDEVINFO 47
#define NFSV4OP_GETDEVLIST 48
#define NFSV4OP_LAYOUTCOMMIT 49
#define NFSV4OP_LAYOUTGET 50
#define NFSV4OP_LAYOUTRETURN 51
#define NFSV4OP_SECINFONONAME 52
#define NFSV4OP_SEQUENCE 53
#define NFSV4OP_SETSSV 54
#define NFSV4OP_TESTSTATEID 55
#define NFSV4OP_WANTDELEG 56
#define NFSV4OP_DESTROYCLIENTID 57
#define NFSV4OP_RECLAIMCOMPL 58
/*
* Must be one more than last op#.
* NFSv4.2 isn't implemented yet, but define the op# limit for it.
*/
#define NFSV41_NOPS 59
#define NFSV42_NOPS 72
/* Quirky case if the illegal op code */
#define NFSV4OP_OPILLEGAL 10044
/*
* Fake NFSV4OP_xxx used for nfsstat. Start at NFSV42_NOPS.
*/
#define NFSV4OP_SYMLINK (NFSV42_NOPS)
#define NFSV4OP_MKDIR (NFSV42_NOPS + 1)
#define NFSV4OP_RMDIR (NFSV42_NOPS + 2)
#define NFSV4OP_READDIRPLUS (NFSV42_NOPS + 3)
#define NFSV4OP_MKNOD (NFSV42_NOPS + 4)
#define NFSV4OP_FSSTAT (NFSV42_NOPS + 5)
#define NFSV4OP_FSINFO (NFSV42_NOPS + 6)
#define NFSV4OP_PATHCONF (NFSV42_NOPS + 7)
#define NFSV4OP_V3CREATE (NFSV42_NOPS + 8)
/*
* This is the count of the fake operations listed above.
*/
#define NFSV4OP_FAKENOPS 9
/*
* and the Callback OPs
*/
#define NFSV4OP_CBGETATTR 3
#define NFSV4OP_CBRECALL 4
/*
* Must be one greater than the last Callback Operation# for NFSv4.0.
*/
#define NFSV4OP_CBNOPS 5
/*
* Additional Callback Ops for NFSv4.1 only.
*/
#define NFSV4OP_CBLAYOUTRECALL 5
#define NFSV4OP_CBNOTIFY 6
#define NFSV4OP_CBPUSHDELEG 7
#define NFSV4OP_CBRECALLANY 8
#define NFSV4OP_CBRECALLOBJAVAIL 9
#define NFSV4OP_CBRECALLSLOT 10
#define NFSV4OP_CBSEQUENCE 11
#define NFSV4OP_CBWANTCANCELLED 12
#define NFSV4OP_CBNOTIFYLOCK 13
#define NFSV4OP_CBNOTIFYDEVID 14
#define NFSV41_CBNOPS 15
#define NFSV42_CBNOPS 16
/*
* The lower numbers -> 21 are used by NFSv2 and v3. These define higher
* numbers used by NFSv4.
* NFS_V3NPROCS is one greater than the last V3 op and NFS_NPROCS is
* one greater than the last number.
*/
#ifndef NFS_V3NPROCS
#define NFS_V3NPROCS 22
#define NFSPROC_LOOKUPP 22
#define NFSPROC_SETCLIENTID 23
#define NFSPROC_SETCLIENTIDCFRM 24
#define NFSPROC_LOCK 25
#define NFSPROC_LOCKU 26
#define NFSPROC_OPEN 27
#define NFSPROC_CLOSE 28
#define NFSPROC_OPENCONFIRM 29
#define NFSPROC_LOCKT 30
#define NFSPROC_OPENDOWNGRADE 31
#define NFSPROC_RENEW 32
#define NFSPROC_PUTROOTFH 33
#define NFSPROC_RELEASELCKOWN 34
#define NFSPROC_DELEGRETURN 35
#define NFSPROC_RETDELEGREMOVE 36
#define NFSPROC_RETDELEGRENAME1 37
#define NFSPROC_RETDELEGRENAME2 38
#define NFSPROC_GETACL 39
#define NFSPROC_SETACL 40
/*
* Must be defined as one higher than the last Proc# above.
*/
#define NFSV4_NPROCS 41
/* Additional procedures for NFSv4.1. */
#define NFSPROC_EXCHANGEID 41
#define NFSPROC_CREATESESSION 42
#define NFSPROC_DESTROYSESSION 43
#define NFSPROC_DESTROYCLIENT 44
#define NFSPROC_FREESTATEID 45
#define NFSPROC_LAYOUTGET 46
#define NFSPROC_GETDEVICEINFO 47
#define NFSPROC_LAYOUTCOMMIT 48
#define NFSPROC_LAYOUTRETURN 49
#define NFSPROC_RECLAIMCOMPL 50
#define NFSPROC_WRITEDS 51
#define NFSPROC_READDS 52
#define NFSPROC_COMMITDS 53
#define NFSPROC_OPENLAYGET 54
#define NFSPROC_CREATELAYGET 55
/*
* Must be defined as one higher than the last NFSv4.1 Proc# above.
*/
#define NFSV41_NPROCS 56
#endif /* NFS_V3NPROCS */
/*
* New stats structure.
* The vers field will be set to NFSSTATS_V1 by the caller.
*/
#define NFSSTATS_V1 1
struct nfsstatsv1 {
int vers; /* Set to version requested by caller. */
uint64_t attrcache_hits;
uint64_t attrcache_misses;
uint64_t lookupcache_hits;
uint64_t lookupcache_misses;
uint64_t direofcache_hits;
uint64_t direofcache_misses;
uint64_t accesscache_hits;
uint64_t accesscache_misses;
uint64_t biocache_reads;
uint64_t read_bios;
uint64_t read_physios;
uint64_t biocache_writes;
uint64_t write_bios;
uint64_t write_physios;
uint64_t biocache_readlinks;
uint64_t readlink_bios;
uint64_t biocache_readdirs;
uint64_t readdir_bios;
uint64_t rpccnt[NFSV41_NPROCS + 13];
uint64_t rpcretries;
uint64_t srvrpccnt[NFSV42_NOPS + NFSV4OP_FAKENOPS];
uint64_t srvrpc_errs;
uint64_t srv_errs;
uint64_t rpcrequests;
uint64_t rpctimeouts;
uint64_t rpcunexpected;
uint64_t rpcinvalid;
uint64_t srvcache_inproghits;
uint64_t srvcache_idemdonehits;
uint64_t srvcache_nonidemdonehits;
uint64_t srvcache_misses;
uint64_t srvcache_tcppeak;
int srvcache_size; /* Updated by atomic_xx_int(). */
uint64_t srvclients;
uint64_t srvopenowners;
uint64_t srvopens;
uint64_t srvlockowners;
uint64_t srvlocks;
uint64_t srvdelegates;
uint64_t cbrpccnt[NFSV42_CBNOPS];
uint64_t clopenowners;
uint64_t clopens;
uint64_t cllockowners;
uint64_t cllocks;
uint64_t cldelegates;
uint64_t cllocalopenowners;
uint64_t cllocalopens;
uint64_t cllocallockowners;
uint64_t cllocallocks;
uint64_t srvstartcnt;
uint64_t srvdonecnt;
uint64_t srvbytes[NFSV42_NOPS + NFSV4OP_FAKENOPS];
uint64_t srvops[NFSV42_NOPS + NFSV4OP_FAKENOPS];
struct bintime srvduration[NFSV42_NOPS + NFSV4OP_FAKENOPS];
struct bintime busyfrom;
struct bintime busytime;
};
/*
* Old stats structure.
*/
struct ext_nfsstats {
int attrcache_hits;
int attrcache_misses;
int lookupcache_hits;
int lookupcache_misses;
int direofcache_hits;
int direofcache_misses;
int accesscache_hits;
int accesscache_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[NFSV4_NPROCS];
int rpcretries;
int srvrpccnt[NFSV4OP_NOPS + NFSV4OP_FAKENOPS];
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 srvcache_tcppeak;
int srvcache_size;
int srvclients;
int srvopenowners;
int srvopens;
int srvlockowners;
int srvlocks;
int srvdelegates;
int cbrpccnt[NFSV4OP_CBNOPS];
int clopenowners;
int clopens;
int cllockowners;
int cllocks;
int cldelegates;
int cllocalopenowners;
int cllocalopens;
int cllocallockowners;
int cllocallocks;
};
#ifdef _KERNEL
/*
* Define NFS_NPROCS as NFSV4_NPROCS for the experimental kernel code.
*/
#ifndef NFS_NPROCS
#define NFS_NPROCS NFSV4_NPROCS
#endif
#include <fs/nfs/nfskpiport.h>
#include <fs/nfs/nfsdport.h>
#include <fs/nfs/rpcv2.h>
#include <fs/nfs/nfsproto.h>
#include <fs/nfs/nfs.h>
#include <fs/nfs/nfsclstate.h>
#include <fs/nfs/nfs_var.h>
#include <fs/nfs/nfsm_subs.h>
#include <fs/nfs/nfsrvcache.h>
#include <fs/nfs/nfsrvstate.h>
#include <fs/nfs/xdr_subs.h>
#include <fs/nfs/nfscl.h>
#include <nfsclient/nfsargs.h>
#include <fs/nfsclient/nfsmount.h>
/*
* Just to keep nfs_var.h happy.
*/
struct nfs_vattr {
int junk;
};
struct nfsvattr {
struct vattr na_vattr;
nfsattrbit_t na_suppattr;
u_int64_t na_mntonfileno;
u_int64_t na_filesid[2];
};
#define na_type na_vattr.va_type
#define na_mode na_vattr.va_mode
#define na_nlink na_vattr.va_nlink
#define na_uid na_vattr.va_uid
#define na_gid na_vattr.va_gid
#define na_fsid na_vattr.va_fsid
#define na_fileid na_vattr.va_fileid
#define na_size na_vattr.va_size
#define na_blocksize na_vattr.va_blocksize
#define na_atime na_vattr.va_atime
#define na_mtime na_vattr.va_mtime
#define na_ctime na_vattr.va_ctime
#define na_gen na_vattr.va_gen
#define na_flags na_vattr.va_flags
#define na_rdev na_vattr.va_rdev
#define na_bytes na_vattr.va_bytes
#define na_filerev na_vattr.va_filerev
#define na_vaflags na_vattr.va_vaflags
#include <fs/nfsclient/nfsnode.h>
/*
* This is the header structure used for the lists, etc. (It has the
* above record in it.
*/
struct nfsrv_stablefirst {
LIST_HEAD(, nfsrv_stable) nsf_head; /* Head of nfsrv_stable list */
time_t nsf_eograce; /* Time grace period ends */
time_t *nsf_bootvals; /* Previous boottime values */
struct file *nsf_fp; /* File table pointer */
u_char nsf_flags; /* NFSNSF_ flags */
struct nfsf_rec nsf_rec; /* and above first record */
};
#define nsf_lease nsf_rec.lease
#define nsf_numboots nsf_rec.numboots
/* NFSNSF_xxx flags */
#define NFSNSF_UPDATEDONE 0x01
#define NFSNSF_GRACEOVER 0x02
#define NFSNSF_NEEDLOCK 0x04
#define NFSNSF_EXPIREDCLIENT 0x08
#define NFSNSF_NOOPENS 0x10
#define NFSNSF_OK 0x20
/*
* Maximum number of boot times allowed in record. Although there is
* really no need for a fixed upper bound, this serves as a sanity check
* for a corrupted file.
*/
#define NFSNSF_MAXNUMBOOTS 10000
/*
* This structure defines the other records in the file. The
* nst_client array is actually the size of the client string name.
*/
struct nfst_rec {
u_int16_t len;
u_char flag;
u_char client[1];
};
/* and the values for flag */
#define NFSNST_NEWSTATE 0x1
#define NFSNST_REVOKE 0x2
#define NFSNST_GOTSTATE 0x4
#define NFSNST_RECLAIMED 0x8
/*
* This structure is linked onto nfsrv_stablefirst for the duration of
* reclaim.
*/
struct nfsrv_stable {
LIST_ENTRY(nfsrv_stable) nst_list;
struct nfsclient *nst_clp;
struct nfst_rec nst_rec;
};
#define nst_timestamp nst_rec.timestamp
#define nst_len nst_rec.len
#define nst_flag nst_rec.flag
#define nst_client nst_rec.client
/*
* At some point the server will run out of kernel storage for
* state structures. For FreeBSD5.2, this results in a panic
* kmem_map is full. It happens at well over 1000000 opens plus
* locks on a PIII-800 with 256Mbytes, so that is where I've set
* the limit. If your server panics due to too many opens/locks,
* decrease the size of NFSRV_V4STATELIMIT. If you find the server
* returning NFS4ERR_RESOURCE a lot and have lots of memory, try
* increasing it.
*/
#define NFSRV_V4STATELIMIT 500000 /* Max # of Opens + Locks */
/*
* The type required differs with BSDen (just the second arg).
*/
void nfsrvd_rcv(struct socket *, void *, int);
/*
* Macros for handling socket addresses. (Hopefully this makes the code
* more portable, since I've noticed some 'BSD don't have sockaddrs in
* mbufs any more.)
*/
#define NFSSOCKADDR(a, t) ((t)(a))
#define NFSSOCKADDRSIZE(a, s) ((a)->sa_len = (s))
/*
* These should be defined as a process or thread structure, as required
* for signal handling, etc.
*/
#define NFSNEWCRED(c) (crdup(c))
#define NFSPROCCRED(p) ((p)->td_ucred)
#define NFSFREECRED(c) (crfree(c))
#define NFSUIOPROC(u, p) ((u)->uio_td = NULL)
#define NFSPROCP(p) ((p)->td_proc)
/*
* Define these so that cn_hash and its length is ignored.
*/
#define NFSCNHASHZERO(c)
#define NFSCNHASH(c, v)
#define NCHNAMLEN 9999999
/*
* These macros are defined to initialize and set the timer routine.
*/
#define NFS_TIMERINIT \
newnfs_timer(NULL)
/*
* Handle SMP stuff:
*/
#define NFSSTATESPINLOCK extern struct mtx nfs_state_mutex
#define NFSLOCKSTATE() mtx_lock(&nfs_state_mutex)
#define NFSUNLOCKSTATE() mtx_unlock(&nfs_state_mutex)
#define NFSSTATEMUTEXPTR (&nfs_state_mutex)
#define NFSREQSPINLOCK extern struct mtx nfs_req_mutex
#define NFSLOCKREQ() mtx_lock(&nfs_req_mutex)
#define NFSUNLOCKREQ() mtx_unlock(&nfs_req_mutex)
#define NFSSOCKMUTEX extern struct mtx nfs_slock_mutex
#define NFSSOCKMUTEXPTR (&nfs_slock_mutex)
#define NFSLOCKSOCK() mtx_lock(&nfs_slock_mutex)
#define NFSUNLOCKSOCK() mtx_unlock(&nfs_slock_mutex)
#define NFSNAMEIDMUTEX extern struct mtx nfs_nameid_mutex
#define NFSLOCKNAMEID() mtx_lock(&nfs_nameid_mutex)
#define NFSUNLOCKNAMEID() mtx_unlock(&nfs_nameid_mutex)
#define NFSNAMEIDREQUIRED() mtx_assert(&nfs_nameid_mutex, MA_OWNED)
#define NFSCLSTATEMUTEX extern struct mtx nfs_clstate_mutex
#define NFSCLSTATEMUTEXPTR (&nfs_clstate_mutex)
#define NFSLOCKCLSTATE() mtx_lock(&nfs_clstate_mutex)
#define NFSUNLOCKCLSTATE() mtx_unlock(&nfs_clstate_mutex)
#define NFSDLOCKMUTEX extern struct mtx newnfsd_mtx
#define NFSDLOCKMUTEXPTR (&newnfsd_mtx)
#define NFSD_LOCK() mtx_lock(&newnfsd_mtx)
#define NFSD_UNLOCK() mtx_unlock(&newnfsd_mtx)
#define NFSD_LOCK_ASSERT() mtx_assert(&newnfsd_mtx, MA_OWNED)
#define NFSD_UNLOCK_ASSERT() mtx_assert(&newnfsd_mtx, MA_NOTOWNED)
#define NFSV4ROOTLOCKMUTEX extern struct mtx nfs_v4root_mutex
#define NFSV4ROOTLOCKMUTEXPTR (&nfs_v4root_mutex)
#define NFSLOCKV4ROOTMUTEX() mtx_lock(&nfs_v4root_mutex)
#define NFSUNLOCKV4ROOTMUTEX() mtx_unlock(&nfs_v4root_mutex)
#define NFSLOCKNODE(n) mtx_lock(&((n)->n_mtx))
#define NFSUNLOCKNODE(n) mtx_unlock(&((n)->n_mtx))
#define NFSLOCKMNT(m) mtx_lock(&((m)->nm_mtx))
#define NFSUNLOCKMNT(m) mtx_unlock(&((m)->nm_mtx))
#define NFSLOCKREQUEST(r) mtx_lock(&((r)->r_mtx))
#define NFSUNLOCKREQUEST(r) mtx_unlock(&((r)->r_mtx))
#define NFSLOCKSOCKREQ(r) mtx_lock(&((r)->nr_mtx))
#define NFSUNLOCKSOCKREQ(r) mtx_unlock(&((r)->nr_mtx))
#define NFSLOCKDS(d) mtx_lock(&((d)->nfsclds_mtx))
#define NFSUNLOCKDS(d) mtx_unlock(&((d)->nfsclds_mtx))
#define NFSSESSIONMUTEXPTR(s) (&((s)->mtx))
#define NFSLOCKSESSION(s) mtx_lock(&((s)->mtx))
#define NFSUNLOCKSESSION(s) mtx_unlock(&((s)->mtx))
#define NFSLAYOUTMUTEXPTR(l) (&((l)->mtx))
#define NFSLOCKLAYOUT(l) mtx_lock(&((l)->mtx))
#define NFSUNLOCKLAYOUT(l) mtx_unlock(&((l)->mtx))
#define NFSDDSMUTEXPTR (&nfsrv_dslock_mtx)
#define NFSDDSLOCK() mtx_lock(&nfsrv_dslock_mtx)
#define NFSDDSUNLOCK() mtx_unlock(&nfsrv_dslock_mtx)
#define NFSDDONTLISTMUTEXPTR (&nfsrv_dontlistlock_mtx)
#define NFSDDONTLISTLOCK() mtx_lock(&nfsrv_dontlistlock_mtx)
#define NFSDDONTLISTUNLOCK() mtx_unlock(&nfsrv_dontlistlock_mtx)
#define NFSDRECALLMUTEXPTR (&nfsrv_recalllock_mtx)
#define NFSDRECALLLOCK() mtx_lock(&nfsrv_recalllock_mtx)
#define NFSDRECALLUNLOCK() mtx_unlock(&nfsrv_recalllock_mtx)
/*
* Use these macros to initialize/free a mutex.
*/
#define NFSINITSOCKMUTEX(m) mtx_init((m), "nfssock", NULL, MTX_DEF)
#define NFSFREEMUTEX(m) mtx_destroy((m))
int nfsmsleep(void *, void *, int, const char *, struct timespec *);
/*
* And weird vm stuff in the nfs server.
*/
#define PDIRUNLOCK 0x0
#define MAX_COMMIT_COUNT (1024 * 1024)
/*
* Define these to handle the type of va_rdev.
*/
#define NFSMAKEDEV(m, n) makedev((m), (n))
#define NFSMAJOR(d) major(d)
#define NFSMINOR(d) minor(d)
/*
* The vnode tag for nfsv4root.
*/
#define VT_NFSV4ROOT "nfsv4root"
/*
* Define whatever it takes to do a vn_rdwr().
*/
#define NFSD_RDWR(r, v, b, l, o, s, i, c, a, p) \
vn_rdwr((r), (v), (b), (l), (o), (s), (i), (c), NULL, (a), (p))
/*
* Macros for handling memory for different BSDen.
* NFSBCOPY(src, dst, len) - copies len bytes, non-overlapping
* NFSOVBCOPY(src, dst, len) - ditto, but data areas might overlap
* NFSBCMP(cp1, cp2, len) - compare len bytes, return 0 if same
* NFSBZERO(cp, len) - set len bytes to 0x0
*/
#define NFSBCOPY(s, d, l) bcopy((s), (d), (l))
#define NFSOVBCOPY(s, d, l) ovbcopy((s), (d), (l))
#define NFSBCMP(s, d, l) bcmp((s), (d), (l))
#define NFSBZERO(s, l) bzero((s), (l))
/*
* Some queue.h files don't have these dfined in them.
*/
#define LIST_END(head) NULL
#define SLIST_END(head) NULL
#define TAILQ_END(head) NULL
/*
* This must be defined to be a global variable that increments once
* per second, but never stops or goes backwards, even when a "date"
* command changes the TOD clock. It is used for delta times for
* leases, etc.
*/
#define NFSD_MONOSEC time_uptime
/*
* Declare the malloc types.
*/
MALLOC_DECLARE(M_NEWNFSRVCACHE);
MALLOC_DECLARE(M_NEWNFSDCLIENT);
MALLOC_DECLARE(M_NEWNFSDSTATE);
MALLOC_DECLARE(M_NEWNFSDLOCK);
MALLOC_DECLARE(M_NEWNFSDLOCKFILE);
MALLOC_DECLARE(M_NEWNFSSTRING);
MALLOC_DECLARE(M_NEWNFSUSERGROUP);
MALLOC_DECLARE(M_NEWNFSDREQ);
MALLOC_DECLARE(M_NEWNFSFH);
MALLOC_DECLARE(M_NEWNFSCLOWNER);
MALLOC_DECLARE(M_NEWNFSCLOPEN);
MALLOC_DECLARE(M_NEWNFSCLDELEG);
MALLOC_DECLARE(M_NEWNFSCLCLIENT);
MALLOC_DECLARE(M_NEWNFSCLLOCKOWNER);
MALLOC_DECLARE(M_NEWNFSCLLOCK);
MALLOC_DECLARE(M_NEWNFSDIROFF);
MALLOC_DECLARE(M_NEWNFSV4NODE);
MALLOC_DECLARE(M_NEWNFSDIRECTIO);
MALLOC_DECLARE(M_NEWNFSMNT);
MALLOC_DECLARE(M_NEWNFSDROLLBACK);
MALLOC_DECLARE(M_NEWNFSLAYOUT);
MALLOC_DECLARE(M_NEWNFSFLAYOUT);
MALLOC_DECLARE(M_NEWNFSDEVINFO);
MALLOC_DECLARE(M_NEWNFSSOCKREQ);
MALLOC_DECLARE(M_NEWNFSCLDS);
MALLOC_DECLARE(M_NEWNFSLAYRECALL);
MALLOC_DECLARE(M_NEWNFSDSESSION);
#define M_NFSRVCACHE M_NEWNFSRVCACHE
#define M_NFSDCLIENT M_NEWNFSDCLIENT
#define M_NFSDSTATE M_NEWNFSDSTATE
#define M_NFSDLOCK M_NEWNFSDLOCK
#define M_NFSDLOCKFILE M_NEWNFSDLOCKFILE
#define M_NFSSTRING M_NEWNFSSTRING
#define M_NFSUSERGROUP M_NEWNFSUSERGROUP
#define M_NFSDREQ M_NEWNFSDREQ
#define M_NFSFH M_NEWNFSFH
#define M_NFSCLOWNER M_NEWNFSCLOWNER
#define M_NFSCLOPEN M_NEWNFSCLOPEN
#define M_NFSCLDELEG M_NEWNFSCLDELEG
#define M_NFSCLCLIENT M_NEWNFSCLCLIENT
#define M_NFSCLLOCKOWNER M_NEWNFSCLLOCKOWNER
#define M_NFSCLLOCK M_NEWNFSCLLOCK
#define M_NFSDIROFF M_NEWNFSDIROFF
#define M_NFSV4NODE M_NEWNFSV4NODE
#define M_NFSDIRECTIO M_NEWNFSDIRECTIO
#define M_NFSDROLLBACK M_NEWNFSDROLLBACK
#define M_NFSLAYOUT M_NEWNFSLAYOUT
#define M_NFSFLAYOUT M_NEWNFSFLAYOUT
#define M_NFSDEVINFO M_NEWNFSDEVINFO
#define M_NFSSOCKREQ M_NEWNFSSOCKREQ
#define M_NFSCLDS M_NEWNFSCLDS
#define M_NFSLAYRECALL M_NEWNFSLAYRECALL
#define M_NFSDSESSION M_NEWNFSDSESSION
#define NFSINT_SIGMASK(set) \
(SIGISMEMBER(set, SIGINT) || SIGISMEMBER(set, SIGTERM) || \
SIGISMEMBER(set, SIGHUP) || SIGISMEMBER(set, SIGKILL) || \
SIGISMEMBER(set, SIGQUIT))
/*
* Convert a quota block count to byte count.
*/
#define NFSQUOTABLKTOBYTE(q, b) (q) *= (b)
/*
* Define this as the largest file size supported. (It should probably
* be available via a VFS_xxx Op, but it isn't.
*/
#define NFSRV_MAXFILESIZE ((u_int64_t)0x800000000000)
/*
* Set this macro to index() or strchr(), whichever is supported.
*/
#define STRCHR(s, c) strchr((s), (c))
/*
* Set the n_time in the client write rpc, as required.
*/
#define NFSWRITERPC_SETTIME(w, n, a, v4) \
do { \
if (w) { \
mtx_lock(&((n)->n_mtx)); \
(n)->n_mtime = (a)->na_mtime; \
if (v4) \
(n)->n_change = (a)->na_filerev; \
mtx_unlock(&((n)->n_mtx)); \
} \
} while (0)
/*
* Fake value, just to make the client work.
*/
#define NFS_LATTR_NOSHRINK 1
/*
* Prototypes for functions where the arguments vary for different ports.
*/
int nfscl_loadattrcache(struct vnode **, struct nfsvattr *, void *, void *,
int, int);
int newnfs_realign(struct mbuf **, int);
/*
* If the port runs on an SMP box that can enforce Atomic ops with low
* overheads, define these as atomic increments/decrements. If not,
* don't worry about it, since these are used for stats that can be
* "out by one" without disastrous consequences.
*/
#define NFSINCRGLOBAL(a) ((a)++)
/*
* Assorted funky stuff to make things work under Darwin8.
*/
/*
* These macros checks for a field in vattr being set.
*/
#define NFSATTRISSET(t, v, a) ((v)->a != (t)VNOVAL)
#define NFSATTRISSETTIME(v, a) ((v)->a.tv_sec != VNOVAL)
/*
* Manipulate mount flags.
*/
#define NFSSTA_HASWRITEVERF 0x00040000 /* Has write verifier */
#define NFSSTA_GOTFSINFO 0x00100000 /* Got the fsinfo */
#define NFSSTA_OPENMODE 0x00200000 /* Must use correct open mode */
#define NFSSTA_FLEXFILE 0x00800000 /* Use Flex File Layout */
#define NFSSTA_NOLAYOUTCOMMIT 0x04000000 /* Don't do LayoutCommit */
#define NFSSTA_SESSPERSIST 0x08000000 /* Has a persistent session */
#define NFSSTA_TIMEO 0x10000000 /* Experiencing a timeout */
#define NFSSTA_LOCKTIMEO 0x20000000 /* Experiencing a lockd timeout */
#define NFSSTA_HASSETFSID 0x40000000 /* Has set the fsid */
#define NFSSTA_PNFS 0x80000000 /* pNFS is enabled */
#define NFSHASNFSV3(n) ((n)->nm_flag & NFSMNT_NFSV3)
#define NFSHASNFSV4(n) ((n)->nm_flag & NFSMNT_NFSV4)
#define NFSHASNFSV4N(n) ((n)->nm_minorvers > 0)
#define NFSHASNFSV3OR4(n) ((n)->nm_flag & (NFSMNT_NFSV3 | NFSMNT_NFSV4))
#define NFSHASGOTFSINFO(n) ((n)->nm_state & NFSSTA_GOTFSINFO)
#define NFSHASHASSETFSID(n) ((n)->nm_state & NFSSTA_HASSETFSID)
#define NFSHASSTRICT3530(n) ((n)->nm_flag & NFSMNT_STRICT3530)
#define NFSHASWRITEVERF(n) ((n)->nm_state & NFSSTA_HASWRITEVERF)
#define NFSHASINT(n) ((n)->nm_flag & NFSMNT_INT)
#define NFSHASSOFT(n) ((n)->nm_flag & NFSMNT_SOFT)
#define NFSHASINTORSOFT(n) ((n)->nm_flag & (NFSMNT_INT | NFSMNT_SOFT))
#define NFSHASDUMBTIMR(n) ((n)->nm_flag & NFSMNT_DUMBTIMR)
#define NFSHASNOCONN(n) ((n)->nm_flag & NFSMNT_MNTD)
#define NFSHASKERB(n) ((n)->nm_flag & NFSMNT_KERB)
#define NFSHASALLGSSNAME(n) ((n)->nm_flag & NFSMNT_ALLGSSNAME)
#define NFSHASINTEGRITY(n) ((n)->nm_flag & NFSMNT_INTEGRITY)
#define NFSHASPRIVACY(n) ((n)->nm_flag & NFSMNT_PRIVACY)
#define NFSSETWRITEVERF(n) ((n)->nm_state |= NFSSTA_HASWRITEVERF)
#define NFSSETHASSETFSID(n) ((n)->nm_state |= NFSSTA_HASSETFSID)
#define NFSHASPNFSOPT(n) ((n)->nm_flag & NFSMNT_PNFS)
#define NFSHASNOLAYOUTCOMMIT(n) ((n)->nm_state & NFSSTA_NOLAYOUTCOMMIT)
#define NFSHASSESSPERSIST(n) ((n)->nm_state & NFSSTA_SESSPERSIST)
#define NFSHASPNFS(n) ((n)->nm_state & NFSSTA_PNFS)
#define NFSHASFLEXFILE(n) ((n)->nm_state & NFSSTA_FLEXFILE)
#define NFSHASOPENMODE(n) ((n)->nm_state & NFSSTA_OPENMODE)
#define NFSHASONEOPENOWN(n) (((n)->nm_flag & NFSMNT_ONEOPENOWN) != 0 && \
(n)->nm_minorvers > 0)
/*
* Gets the stats field out of the mount structure.
*/
#define vfs_statfs(m) (&((m)->mnt_stat))
/*
* Set boottime.
*/
#define NFSSETBOOTTIME(b) (getboottime(&b))
/*
* The size of directory blocks in the buffer cache.
* MUST BE in the range of PAGE_SIZE <= NFS_DIRBLKSIZ <= MAXBSIZE!!
*/
#define NFS_DIRBLKSIZ (16 * DIRBLKSIZ) /* Must be a multiple of DIRBLKSIZ */
/*
* Define these macros to access mnt_flag fields.
*/
#define NFSMNT_RDONLY(m) ((m)->mnt_flag & MNT_RDONLY)
#endif /* _KERNEL */
/*
* Define a structure similar to ufs_args for use in exporting the V4 root.
*/
struct nfsex_args {
char *fspec;
struct export_args export;
};
/*
* These export flags should be defined, but there are no bits left.
* Maybe a separate mnt_exflag field could be added or the mnt_flag
* field increased to 64 bits?
*/
#ifndef MNT_EXSTRICTACCESS
#define MNT_EXSTRICTACCESS 0x0
#endif
#ifndef MNT_EXV4ONLY
#define MNT_EXV4ONLY 0x0
#endif
#ifdef _KERNEL
/*
* Define this to invalidate the attribute cache for the nfs node.
*/
#define NFSINVALATTRCACHE(n) ((n)->n_attrstamp = 0)
/* Used for FreeBSD only */
void nfsd_mntinit(void);
/*
* Define these for vnode lock/unlock ops.
*
* These are good abstractions to macro out, so that they can be added to
* later, for debugging or stats, etc.
*/
#define NFSVOPLOCK(v, f) vn_lock((v), (f))
#define NFSVOPUNLOCK(v, f) VOP_UNLOCK((v), (f))
#define NFSVOPISLOCKED(v) VOP_ISLOCKED((v))
/*
* Define ncl_hash().
*/
#define ncl_hash(f, l) (fnv_32_buf((f), (l), FNV1_32_INIT))
int newnfs_iosize(struct nfsmount *);
int newnfs_vncmpf(struct vnode *, void *);
#ifndef NFS_MINDIRATTRTIMO
#define NFS_MINDIRATTRTIMO 3 /* VDIR attrib cache timeout in sec */
#endif
#ifndef NFS_MAXDIRATTRTIMO
#define NFS_MAXDIRATTRTIMO 60
#endif
/*
* Nfs outstanding request list element
*/
struct nfsreq {
TAILQ_ENTRY(nfsreq) r_chain;
u_int32_t r_flags; /* flags on request, see below */
struct nfsmount *r_nmp; /* Client mnt ptr */
struct mtx r_mtx; /* Mutex lock for this structure */
};
#ifndef NFS_MAXBSIZE
#define NFS_MAXBSIZE (maxbcachebuf)
#endif
/*
* This macro checks to see if issuing of delegations is allowed for this
* vnode.
*/
#ifdef VV_DISABLEDELEG
#define NFSVNO_DELEGOK(v) \
((v) == NULL || ((v)->v_vflag & VV_DISABLEDELEG) == 0)
#else
#define NFSVNO_DELEGOK(v) (1)
#endif
/*
* Name used by getnewvnode() to describe filesystem, "nfs".
* For performance reasons it is useful to have the same string
* used in both places that call getnewvnode().
*/
extern const char nfs_vnode_tag[];
/*
* Check for the errors that indicate a DS should be disabled.
* ENXIO indicates that the krpc cannot do an RPC on the DS.
* EIO is returned by the RPC as an indication of I/O problems on the
* server.
* Are there other fatal errors?
*/
#define nfsds_failerr(e) ((e) == ENXIO || (e) == EIO)
/*
* Get a pointer to the MDS session, which is always the first element
* in the list.
* This macro can only be safely used when the NFSLOCKMNT() lock is held.
* The inline function can be used when the lock isn't held.
*/
#define NFSMNT_MDSSESSION(m) (&(TAILQ_FIRST(&((m)->nm_sess))->nfsclds_sess))
static __inline struct nfsclsession *
nfsmnt_mdssession(struct nfsmount *nmp)
{
struct nfsclsession *tsep;
tsep = NULL;
mtx_lock(&nmp->nm_mtx);
if (TAILQ_FIRST(&nmp->nm_sess) != NULL)
tsep = NFSMNT_MDSSESSION(nmp);
mtx_unlock(&nmp->nm_mtx);
return (tsep);
}
#endif /* _KERNEL */
#endif /* _NFS_NFSPORT_H */
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