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/*
Copyright (c) 2010 Gluster, Inc. <http://www.gluster.com>
This file is part of GlusterFS.
GlusterFS is free software; you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published
by the Free Software Foundation; either version 3 of the License,
or (at your option) any later version.
GlusterFS is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see
<http://www.gnu.org/licenses/>.
*/
#ifndef _NFS3_H_
#define _NFS3_H_
#ifndef _CONFIG_H
#define _CONFIG_H
#include "config.h"
#endif
#include "rpcsvc.h"
#include "dict.h"
#include "xlator.h"
#include "iobuf.h"
#include "nfs.h"
#include "nfs3-fh.h"
#include "nfs-common.h"
#include "xdr-nfs3.h"
#include "mem-pool.h"
#include <sys/statvfs.h>
#define GF_NFS3 GF_NFS"-nfsv3"
#define GF_NFS3_PORT 38467
#define GF_NFS3_DEFAULT_MEMFACTOR 15
#define GF_NFS3_IOBPOOL_MULT GF_NFS_CONCURRENT_OPS_MULT
#define GF_NFS3_CLTABLE_BUCKETS_MULT 2
#define GF_NFS3_FDTABLE_BUCKETS_MULT 2
/* Static values used for FSINFO
FIXME: This should be configurable */
#define GF_NFS3_RTMAX (64 * GF_UNIT_KB)
#define GF_NFS3_RTPREF (64 * GF_UNIT_KB)
#define GF_NFS3_RTMULT (4 * GF_UNIT_KB)
#define GF_NFS3_WTMAX (64 * GF_UNIT_KB)
#define GF_NFS3_WTPREF (64 * GF_UNIT_KB)
#define GF_NFS3_WTMULT (4 * GF_UNIT_KB)
#define GF_NFS3_DTMIN (4 * GF_UNIT_KB)
#define GF_NFS3_DTPREF (64 * GF_UNIT_KB)
#define GF_NFS3_MAXFILE (1 * GF_UNIT_PB)
/* FIXME: Handle time resolutions */
#define GF_NFS3_TIMEDELTA_SECS {1,0}
#define GF_NFS3_TIMEDELTA_NSECS {0,1}
#define GF_NFS3_TIMEDELTA_MSECS {0,1000000}
#define GF_NFS3_FS_PROP (FSF3_LINK | FSF3_SYMLINK | FSF3_HOMOGENEOUS | FSF3_CANSETTIME)
#define GF_NFS3_DIRFD_VALID 1
#define GF_NFS3_DIRFD_INVALID 0
#define GF_NFS3_VOLACCESS_RW 1
#define GF_NFS3_VOLACCESS_RO 2
#define GF_NFS3_FDCACHE_SIZE 512
/* This should probably be moved to a more generic layer so that if needed
* different versions of NFS protocol can use the same thing.
*/
struct nfs3_fd_entry {
fd_t *cachedfd;
struct list_head list;
};
/* Per subvolume nfs3 specific state */
struct nfs3_export {
struct list_head explist;
xlator_t *subvol;
uuid_t volumeid;
int access;
int trusted_sync;
int trusted_write;
int rootlookedup;
};
#define GF_NFS3_DEFAULT_VOLACCESS (GF_NFS3_VOLACCESS_RW)
/* The NFSv3 protocol state */
struct nfs3_state {
/* The NFS xlator pointer. The NFS xlator can be running
* multiple versions of the NFS protocol.
*/
xlator_t *nfsx;
/* The iob pool from which memory allocations are made for receiving
* and sending network messages.
*/
struct iobuf_pool *iobpool;
/* List of child subvolumes for the NFSv3 protocol.
* Right now, is simply referring to the list of children in nfsx above.
*/
xlator_list_t *exportslist;
struct list_head exports;
/* Mempool for allocations of struct nfs3_local */
struct mem_pool *localpool;
/* Server start-up timestamp, currently used for write verifier. */
uint64_t serverstart;
/* NFSv3 Protocol configurables */
size_t readsize;
size_t writesize;
size_t readdirsize;
/* Size of the iobufs used, depends on the sizes of the three params
* above.
*/
size_t iobsize;
unsigned int memfactor;
struct list_head fdlru;
gf_lock_t fdlrulock;
int fdcount;
};
typedef enum nfs3_lookup_type {
GF_NFS3_REVALIDATE = 1,
GF_NFS3_FRESH,
} nfs3_lookup_type_t;
typedef int (*nfs3_resume_fn_t) (void *cs);
/* Structure used to communicate state between a fop and its callback.
* Not all members are used at all times. Usage is fop and NFS request
* dependent.
*
* I wish we could have a smaller structure for communicating state
* between callers and callbacks. It could be broken into smaller parts
* but I feel that will lead to a proliferation of types/structures and then
* we'll just be tracking down which structure is used by which fop, not
* to mention that having one type allows me to used a single mem-pool.
* Imagine the chaos if we need a mem-pool for each one of those sub-structures.
*/
struct nfs3_local {
rpcsvc_request_t *req;
xlator_t *vol;
nfs3_resume_fn_t resume_fn;
xlator_t *nfsx;
struct nfs3_state *nfs3state;
/* The list hook to attach this call state to the inode's queue till
* the opening of the fd on the inode completes.
*/
struct list_head openwait_q;
/* Per-NFSv3 Op state */
struct nfs3_fh parent;
struct nfs3_fh fh;
fd_t *fd;
uint32_t accessbits;
int operrno;
count3 dircount;
count3 maxcount;
struct statvfs fsstat;
gf_dirent_t entries;
struct iatt stbuf;
struct iatt preparent;
struct iatt postparent;
int32_t setattr_valid;
nfstime3 timestamp;
loc_t oploc;
int writetype;
count3 datacount;
offset3 dataoffset;
struct iobuf *iob;
struct iobref *iobref;
createmode3 createmode;
uint64_t cookieverf;
int sattrguardcheck;
char *pathname;
ftype3 mknodtype;
specdata3 devnums;
cookie3 cookie;
struct iovec datavec;
mode_t mode;
/* NFSv3 FH resolver state */
struct nfs3_fh resolvefh;
loc_t resolvedloc;
int resolve_ret;
int resolve_errno;
int hashidx;
fd_t *resolve_dir_fd;
char *resolventry;
nfs3_lookup_type_t lookuptype;
};
#define nfs3_is_revalidate_lookup(cst) ((cst)->lookuptype == GF_NFS3_REVALIDATE)
#define nfs3_lookup_op(cst) (rpcsvc_request_procnum(cst->req) == NFS3_LOOKUP)
typedef struct nfs3_local nfs3_call_state_t;
/* Queue of ops waiting for open fop to return. */
struct inode_op_queue {
struct list_head opq;
pthread_mutex_t qlock;
};
extern rpcsvc_program_t *
nfs3svc_init (xlator_t *nfsx);
#endif
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