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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 __NFS_H__
#define __NFS_H__
#ifndef _CONFIG_H
#define _CONFIG_H
#include "config.h"
#endif
#include "rpcsvc.h"
#include "dict.h"
#include "xlator.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
/* 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;
};
typedef enum {
GF_NFS_SUBVOLUME_NOTSTARTED = 1,
GF_NFS_SUBVOLUME_LOOKUPSENT,
GF_NFS_SUBVOLUME_STARTED,
} nfs_subvolume_status_t;
struct nfs_subvolume {
xlator_t *subvol;
nfs_subvolume_status_t status;
};
#define gf_nfs_subvolume_started(svl) ((svl)->status == GF_NFS_SUBVOLUME_STARTED)
#define gf_nfs_subvolume_lookupsent(svl) ((svl)->status == GF_NFS_SUBVOLUME_LOOKUPSENT)
#define gf_nfs_subvolume_notstarted(svl) ((svl)->status == GF_NFS_SUBVOLUME_NOTSTARTED)
#define gf_nfs_subvolume_unused_slot(svl) ((svl)->subvol == NULL)
#define gf_nfs_all_subvolumes_started(nf) ((nf->upsubvols == nf->allsubvols) && (!nf->subvols_started))
struct nfs_state {
rpcsvc_t *rpcsvc;
struct list_head versions;
struct mem_pool *foppool;
unsigned int memfactor;
gf_lock_t svinitlock;
int allsubvols;
int upsubvols;
struct nfs_subvolume *subvols;
int subvols_started;
int dynamicvolumes;
xlator_t *nfsx;
};
#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)
/* 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;
} 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);
#endif
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