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/*
Copyright (c) 2010-2011 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 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
General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see
<http://www.gnu.org/licenses/>.
*/
#ifndef __NFS_H__
#define __NFS_H__
#ifndef _CONFIG_H
#define _CONFIG_H
#include "config.h"
#endif
#include "rpcsvc.h"
#include "dict.h"
#include "xlator.h"
#include "lkowner.h"
#define GF_NFS "nfs"
#define GF_NFS_CONCURRENT_OPS_MULT 15
#define GF_NFS_INODE_LRU_MULT 6000
#define GF_RPC_MIN_THREADS 1
#define GF_RPC_MAX_THREADS 16
#define GF_NFS_DEFAULT_MEMFACTOR 15
#define GF_NFS_MIN_MEMFACTOR 1
#define GF_NFS_MAX_MEMFACTOR 30
#define GF_NFS_DVM_ON 1
#define GF_NFS_DVM_OFF 2
/* This corresponds to the max 16 number of group IDs that are sent through an
* RPC request. Since NFS is the only one going to set this, we can be safe
* in keeping this size hardcoded.
*/
#define GF_REQUEST_MAXGROUPS 16
/* Callback into a version-specific NFS protocol.
* The return type is used by the nfs.c code to register the protocol.
* with the RPC service.
*/
typedef rpcsvc_program_t *(*nfs_version_initer_t) (xlator_t *nfsx);
/* List of version-specific protocol initiators */
struct nfs_initer_list {
struct list_head list;
nfs_version_initer_t init;
rpcsvc_program_t *program;
};
/*
* TBD: make the cache size tunable
*
* The current size represents a pretty trivial amount of memory, and should
* provide good hit rates even for quite busy systems. If we ever want to
* support really large cache sizes, we'll need to do dynamic allocation
* instead of just defining an array within nfs_state. It doesn't make a
* whole lot of sense to change the associativity, because it won't improve
* hit rates all that much and will increase the maintenance cost as we have
* to scan more entries with every lookup/update.
*/
#define AUX_GID_CACHE_ASSOC 4
#define AUX_GID_CACHE_BUCKETS 256
#define AUX_GID_CACHE_SIZE (AUX_GID_CACHE_ASSOC * AUX_GID_CACHE_BUCKETS)
typedef struct {
uid_t uid;
int gid_count;
gid_t *gid_list;
time_t deadline;
} aux_gid_list_t;
struct nfs_state {
rpcsvc_t *rpcsvc;
struct list_head versions;
struct mount3_state *mstate;
struct nfs3_state *nfs3state;
struct nlm4_state *nlm4state;
struct mem_pool *foppool;
unsigned int memfactor;
xlator_list_t *subvols;
gf_lock_t svinitlock;
int allsubvols;
int upsubvols;
xlator_t **initedxl;
int subvols_started;
int dynamicvolumes;
int enable_ino32;
unsigned int override_portnum;
int allow_insecure;
int enable_nlm;
int mount_udp;
struct rpc_clnt *rpc_clnt;
gf_boolean_t server_aux_gids;
gf_lock_t aux_gid_lock;
uint32_t aux_gid_max_age;
unsigned int aux_gid_nbuckets;
aux_gid_list_t aux_gid_cache[AUX_GID_CACHE_SIZE];
};
#define gf_nfs_dvm_on(nfsstt) (((struct nfs_state *)nfsstt)->dynamicvolumes == GF_NFS_DVM_ON)
#define gf_nfs_dvm_off(nfsstt) (((struct nfs_state *)nfsstt)->dynamicvolumes == GF_NFS_DVM_OFF)
#define __gf_nfs_enable_ino32(nfsstt) (((struct nfs_state *)nfsstt)->enable_ino32)
#define gf_nfs_this_private ((struct nfs_state *)((xlator_t *)THIS)->private)
#define gf_nfs_enable_ino32() (__gf_nfs_enable_ino32(gf_nfs_this_private))
/* We have one gid more than the glusterfs maximum since we pass the primary
* gid as the first element of the array.
*/
#define NFS_NGROUPS (GF_REQUEST_MAXGROUPS + 1)
/* Index of the primary gid */
#define NFS_PRIMGID_IDX 0
typedef struct nfs_user_info {
uid_t uid;
gid_t gids[NFS_NGROUPS];
int ngrps;
gf_lkowner_t lk_owner;
} nfs_user_t;
extern int
nfs_user_root_create (nfs_user_t *newnfu);
extern int
nfs_user_create (nfs_user_t *newnfu, uid_t uid, gid_t gid, gid_t *auxgids,
int auxcount);
extern void
nfs_request_user_init (nfs_user_t *nfu, rpcsvc_request_t *req);
extern void
nfs_request_primary_user_init (nfs_user_t *nfu, rpcsvc_request_t *req,
uid_t uid, gid_t gid);
extern int
nfs_subvolume_started (struct nfs_state *nfs, xlator_t *xl);
extern void
nfs_fix_groups (xlator_t *this, call_stack_t *root);
#endif
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