forked from Minki/linux
97ad4031e2
Add a new nfsd/clients/#/info file with some basic information about each NFSv4 client. Signed-off-by: J. Bruce Fields <bfields@redhat.com>
452 lines
18 KiB
C
452 lines
18 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
/*
|
|
* Hodge-podge collection of knfsd-related stuff.
|
|
* I will sort this out later.
|
|
*
|
|
* Copyright (C) 1995-1997 Olaf Kirch <okir@monad.swb.de>
|
|
*/
|
|
|
|
#ifndef LINUX_NFSD_NFSD_H
|
|
#define LINUX_NFSD_NFSD_H
|
|
|
|
#include <linux/types.h>
|
|
#include <linux/mount.h>
|
|
|
|
#include <linux/nfs.h>
|
|
#include <linux/nfs2.h>
|
|
#include <linux/nfs3.h>
|
|
#include <linux/nfs4.h>
|
|
#include <linux/sunrpc/svc.h>
|
|
#include <linux/sunrpc/svc_xprt.h>
|
|
#include <linux/sunrpc/msg_prot.h>
|
|
|
|
#include <uapi/linux/nfsd/debug.h>
|
|
|
|
#include "netns.h"
|
|
#include "stats.h"
|
|
#include "export.h"
|
|
|
|
#undef ifdebug
|
|
#ifdef CONFIG_SUNRPC_DEBUG
|
|
# define ifdebug(flag) if (nfsd_debug & NFSDDBG_##flag)
|
|
#else
|
|
# define ifdebug(flag) if (0)
|
|
#endif
|
|
|
|
/*
|
|
* nfsd version
|
|
*/
|
|
#define NFSD_SUPPORTED_MINOR_VERSION 2
|
|
/*
|
|
* Maximum blocksizes supported by daemon under various circumstances.
|
|
*/
|
|
#define NFSSVC_MAXBLKSIZE RPCSVC_MAXPAYLOAD
|
|
/* NFSv2 is limited by the protocol specification, see RFC 1094 */
|
|
#define NFSSVC_MAXBLKSIZE_V2 (8*1024)
|
|
|
|
|
|
/*
|
|
* Largest number of bytes we need to allocate for an NFS
|
|
* call or reply. Used to control buffer sizes. We use
|
|
* the length of v3 WRITE, READDIR and READDIR replies
|
|
* which are an RPC header, up to 26 XDR units of reply
|
|
* data, and some page data.
|
|
*
|
|
* Note that accuracy here doesn't matter too much as the
|
|
* size is rounded up to a page size when allocating space.
|
|
*/
|
|
#define NFSD_BUFSIZE ((RPC_MAX_HEADER_WITH_AUTH+26)*XDR_UNIT + NFSSVC_MAXBLKSIZE)
|
|
|
|
struct readdir_cd {
|
|
__be32 err; /* 0, nfserr, or nfserr_eof */
|
|
};
|
|
|
|
|
|
extern struct svc_program nfsd_program;
|
|
extern const struct svc_version nfsd_version2, nfsd_version3,
|
|
nfsd_version4;
|
|
extern struct mutex nfsd_mutex;
|
|
extern spinlock_t nfsd_drc_lock;
|
|
extern unsigned long nfsd_drc_max_mem;
|
|
extern unsigned long nfsd_drc_mem_used;
|
|
|
|
extern const struct seq_operations nfs_exports_op;
|
|
|
|
/*
|
|
* Function prototypes.
|
|
*/
|
|
int nfsd_svc(int nrservs, struct net *net, const struct cred *cred);
|
|
int nfsd_dispatch(struct svc_rqst *rqstp, __be32 *statp);
|
|
|
|
int nfsd_nrthreads(struct net *);
|
|
int nfsd_nrpools(struct net *);
|
|
int nfsd_get_nrthreads(int n, int *, struct net *);
|
|
int nfsd_set_nrthreads(int n, int *, struct net *);
|
|
int nfsd_pool_stats_open(struct inode *, struct file *);
|
|
int nfsd_pool_stats_release(struct inode *, struct file *);
|
|
|
|
void nfsd_destroy(struct net *net);
|
|
|
|
struct nfsdfs_client {
|
|
struct kref cl_ref;
|
|
void (*cl_release)(struct kref *kref);
|
|
};
|
|
|
|
struct nfsdfs_client *get_nfsdfs_client(struct inode *);
|
|
struct dentry *nfsd_client_mkdir(struct nfsd_net *nn,
|
|
struct nfsdfs_client *ncl, u32 id, const struct tree_descr *);
|
|
void nfsd_client_rmdir(struct dentry *dentry);
|
|
|
|
#if defined(CONFIG_NFSD_V2_ACL) || defined(CONFIG_NFSD_V3_ACL)
|
|
#ifdef CONFIG_NFSD_V2_ACL
|
|
extern const struct svc_version nfsd_acl_version2;
|
|
#else
|
|
#define nfsd_acl_version2 NULL
|
|
#endif
|
|
#ifdef CONFIG_NFSD_V3_ACL
|
|
extern const struct svc_version nfsd_acl_version3;
|
|
#else
|
|
#define nfsd_acl_version3 NULL
|
|
#endif
|
|
#endif
|
|
|
|
struct nfsd_net;
|
|
|
|
enum vers_op {NFSD_SET, NFSD_CLEAR, NFSD_TEST, NFSD_AVAIL };
|
|
int nfsd_vers(struct nfsd_net *nn, int vers, enum vers_op change);
|
|
int nfsd_minorversion(struct nfsd_net *nn, u32 minorversion, enum vers_op change);
|
|
void nfsd_reset_versions(struct nfsd_net *nn);
|
|
int nfsd_create_serv(struct net *net);
|
|
|
|
extern int nfsd_max_blksize;
|
|
|
|
static inline int nfsd_v4client(struct svc_rqst *rq)
|
|
{
|
|
return rq->rq_prog == NFS_PROGRAM && rq->rq_vers == 4;
|
|
}
|
|
static inline struct user_namespace *
|
|
nfsd_user_namespace(const struct svc_rqst *rqstp)
|
|
{
|
|
const struct cred *cred = rqstp->rq_xprt->xpt_cred;
|
|
return cred ? cred->user_ns : &init_user_ns;
|
|
}
|
|
|
|
/*
|
|
* NFSv4 State
|
|
*/
|
|
#ifdef CONFIG_NFSD_V4
|
|
extern unsigned long max_delegations;
|
|
int nfsd4_init_slabs(void);
|
|
void nfsd4_free_slabs(void);
|
|
int nfs4_state_start(void);
|
|
int nfs4_state_start_net(struct net *net);
|
|
void nfs4_state_shutdown(void);
|
|
void nfs4_state_shutdown_net(struct net *net);
|
|
void nfs4_reset_lease(time_t leasetime);
|
|
int nfs4_reset_recoverydir(char *recdir);
|
|
char * nfs4_recoverydir(void);
|
|
bool nfsd4_spo_must_allow(struct svc_rqst *rqstp);
|
|
#else
|
|
static inline int nfsd4_init_slabs(void) { return 0; }
|
|
static inline void nfsd4_free_slabs(void) { }
|
|
static inline int nfs4_state_start(void) { return 0; }
|
|
static inline int nfs4_state_start_net(struct net *net) { return 0; }
|
|
static inline void nfs4_state_shutdown(void) { }
|
|
static inline void nfs4_state_shutdown_net(struct net *net) { }
|
|
static inline void nfs4_reset_lease(time_t leasetime) { }
|
|
static inline int nfs4_reset_recoverydir(char *recdir) { return 0; }
|
|
static inline char * nfs4_recoverydir(void) {return NULL; }
|
|
static inline bool nfsd4_spo_must_allow(struct svc_rqst *rqstp)
|
|
{
|
|
return false;
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* lockd binding
|
|
*/
|
|
void nfsd_lockd_init(void);
|
|
void nfsd_lockd_shutdown(void);
|
|
|
|
|
|
/*
|
|
* These macros provide pre-xdr'ed values for faster operation.
|
|
*/
|
|
#define nfs_ok cpu_to_be32(NFS_OK)
|
|
#define nfserr_perm cpu_to_be32(NFSERR_PERM)
|
|
#define nfserr_noent cpu_to_be32(NFSERR_NOENT)
|
|
#define nfserr_io cpu_to_be32(NFSERR_IO)
|
|
#define nfserr_nxio cpu_to_be32(NFSERR_NXIO)
|
|
#define nfserr_eagain cpu_to_be32(NFSERR_EAGAIN)
|
|
#define nfserr_acces cpu_to_be32(NFSERR_ACCES)
|
|
#define nfserr_exist cpu_to_be32(NFSERR_EXIST)
|
|
#define nfserr_xdev cpu_to_be32(NFSERR_XDEV)
|
|
#define nfserr_nodev cpu_to_be32(NFSERR_NODEV)
|
|
#define nfserr_notdir cpu_to_be32(NFSERR_NOTDIR)
|
|
#define nfserr_isdir cpu_to_be32(NFSERR_ISDIR)
|
|
#define nfserr_inval cpu_to_be32(NFSERR_INVAL)
|
|
#define nfserr_fbig cpu_to_be32(NFSERR_FBIG)
|
|
#define nfserr_nospc cpu_to_be32(NFSERR_NOSPC)
|
|
#define nfserr_rofs cpu_to_be32(NFSERR_ROFS)
|
|
#define nfserr_mlink cpu_to_be32(NFSERR_MLINK)
|
|
#define nfserr_opnotsupp cpu_to_be32(NFSERR_OPNOTSUPP)
|
|
#define nfserr_nametoolong cpu_to_be32(NFSERR_NAMETOOLONG)
|
|
#define nfserr_notempty cpu_to_be32(NFSERR_NOTEMPTY)
|
|
#define nfserr_dquot cpu_to_be32(NFSERR_DQUOT)
|
|
#define nfserr_stale cpu_to_be32(NFSERR_STALE)
|
|
#define nfserr_remote cpu_to_be32(NFSERR_REMOTE)
|
|
#define nfserr_wflush cpu_to_be32(NFSERR_WFLUSH)
|
|
#define nfserr_badhandle cpu_to_be32(NFSERR_BADHANDLE)
|
|
#define nfserr_notsync cpu_to_be32(NFSERR_NOT_SYNC)
|
|
#define nfserr_badcookie cpu_to_be32(NFSERR_BAD_COOKIE)
|
|
#define nfserr_notsupp cpu_to_be32(NFSERR_NOTSUPP)
|
|
#define nfserr_toosmall cpu_to_be32(NFSERR_TOOSMALL)
|
|
#define nfserr_serverfault cpu_to_be32(NFSERR_SERVERFAULT)
|
|
#define nfserr_badtype cpu_to_be32(NFSERR_BADTYPE)
|
|
#define nfserr_jukebox cpu_to_be32(NFSERR_JUKEBOX)
|
|
#define nfserr_denied cpu_to_be32(NFSERR_DENIED)
|
|
#define nfserr_deadlock cpu_to_be32(NFSERR_DEADLOCK)
|
|
#define nfserr_expired cpu_to_be32(NFSERR_EXPIRED)
|
|
#define nfserr_bad_cookie cpu_to_be32(NFSERR_BAD_COOKIE)
|
|
#define nfserr_same cpu_to_be32(NFSERR_SAME)
|
|
#define nfserr_clid_inuse cpu_to_be32(NFSERR_CLID_INUSE)
|
|
#define nfserr_stale_clientid cpu_to_be32(NFSERR_STALE_CLIENTID)
|
|
#define nfserr_resource cpu_to_be32(NFSERR_RESOURCE)
|
|
#define nfserr_moved cpu_to_be32(NFSERR_MOVED)
|
|
#define nfserr_nofilehandle cpu_to_be32(NFSERR_NOFILEHANDLE)
|
|
#define nfserr_minor_vers_mismatch cpu_to_be32(NFSERR_MINOR_VERS_MISMATCH)
|
|
#define nfserr_share_denied cpu_to_be32(NFSERR_SHARE_DENIED)
|
|
#define nfserr_stale_stateid cpu_to_be32(NFSERR_STALE_STATEID)
|
|
#define nfserr_old_stateid cpu_to_be32(NFSERR_OLD_STATEID)
|
|
#define nfserr_bad_stateid cpu_to_be32(NFSERR_BAD_STATEID)
|
|
#define nfserr_bad_seqid cpu_to_be32(NFSERR_BAD_SEQID)
|
|
#define nfserr_symlink cpu_to_be32(NFSERR_SYMLINK)
|
|
#define nfserr_not_same cpu_to_be32(NFSERR_NOT_SAME)
|
|
#define nfserr_lock_range cpu_to_be32(NFSERR_LOCK_RANGE)
|
|
#define nfserr_restorefh cpu_to_be32(NFSERR_RESTOREFH)
|
|
#define nfserr_attrnotsupp cpu_to_be32(NFSERR_ATTRNOTSUPP)
|
|
#define nfserr_bad_xdr cpu_to_be32(NFSERR_BAD_XDR)
|
|
#define nfserr_openmode cpu_to_be32(NFSERR_OPENMODE)
|
|
#define nfserr_badowner cpu_to_be32(NFSERR_BADOWNER)
|
|
#define nfserr_locks_held cpu_to_be32(NFSERR_LOCKS_HELD)
|
|
#define nfserr_op_illegal cpu_to_be32(NFSERR_OP_ILLEGAL)
|
|
#define nfserr_grace cpu_to_be32(NFSERR_GRACE)
|
|
#define nfserr_no_grace cpu_to_be32(NFSERR_NO_GRACE)
|
|
#define nfserr_reclaim_bad cpu_to_be32(NFSERR_RECLAIM_BAD)
|
|
#define nfserr_badname cpu_to_be32(NFSERR_BADNAME)
|
|
#define nfserr_cb_path_down cpu_to_be32(NFSERR_CB_PATH_DOWN)
|
|
#define nfserr_locked cpu_to_be32(NFSERR_LOCKED)
|
|
#define nfserr_wrongsec cpu_to_be32(NFSERR_WRONGSEC)
|
|
#define nfserr_badiomode cpu_to_be32(NFS4ERR_BADIOMODE)
|
|
#define nfserr_badlayout cpu_to_be32(NFS4ERR_BADLAYOUT)
|
|
#define nfserr_bad_session_digest cpu_to_be32(NFS4ERR_BAD_SESSION_DIGEST)
|
|
#define nfserr_badsession cpu_to_be32(NFS4ERR_BADSESSION)
|
|
#define nfserr_badslot cpu_to_be32(NFS4ERR_BADSLOT)
|
|
#define nfserr_complete_already cpu_to_be32(NFS4ERR_COMPLETE_ALREADY)
|
|
#define nfserr_conn_not_bound_to_session cpu_to_be32(NFS4ERR_CONN_NOT_BOUND_TO_SESSION)
|
|
#define nfserr_deleg_already_wanted cpu_to_be32(NFS4ERR_DELEG_ALREADY_WANTED)
|
|
#define nfserr_back_chan_busy cpu_to_be32(NFS4ERR_BACK_CHAN_BUSY)
|
|
#define nfserr_layouttrylater cpu_to_be32(NFS4ERR_LAYOUTTRYLATER)
|
|
#define nfserr_layoutunavailable cpu_to_be32(NFS4ERR_LAYOUTUNAVAILABLE)
|
|
#define nfserr_nomatching_layout cpu_to_be32(NFS4ERR_NOMATCHING_LAYOUT)
|
|
#define nfserr_recallconflict cpu_to_be32(NFS4ERR_RECALLCONFLICT)
|
|
#define nfserr_unknown_layouttype cpu_to_be32(NFS4ERR_UNKNOWN_LAYOUTTYPE)
|
|
#define nfserr_seq_misordered cpu_to_be32(NFS4ERR_SEQ_MISORDERED)
|
|
#define nfserr_sequence_pos cpu_to_be32(NFS4ERR_SEQUENCE_POS)
|
|
#define nfserr_req_too_big cpu_to_be32(NFS4ERR_REQ_TOO_BIG)
|
|
#define nfserr_rep_too_big cpu_to_be32(NFS4ERR_REP_TOO_BIG)
|
|
#define nfserr_rep_too_big_to_cache cpu_to_be32(NFS4ERR_REP_TOO_BIG_TO_CACHE)
|
|
#define nfserr_retry_uncached_rep cpu_to_be32(NFS4ERR_RETRY_UNCACHED_REP)
|
|
#define nfserr_unsafe_compound cpu_to_be32(NFS4ERR_UNSAFE_COMPOUND)
|
|
#define nfserr_too_many_ops cpu_to_be32(NFS4ERR_TOO_MANY_OPS)
|
|
#define nfserr_op_not_in_session cpu_to_be32(NFS4ERR_OP_NOT_IN_SESSION)
|
|
#define nfserr_hash_alg_unsupp cpu_to_be32(NFS4ERR_HASH_ALG_UNSUPP)
|
|
#define nfserr_clientid_busy cpu_to_be32(NFS4ERR_CLIENTID_BUSY)
|
|
#define nfserr_pnfs_io_hole cpu_to_be32(NFS4ERR_PNFS_IO_HOLE)
|
|
#define nfserr_seq_false_retry cpu_to_be32(NFS4ERR_SEQ_FALSE_RETRY)
|
|
#define nfserr_bad_high_slot cpu_to_be32(NFS4ERR_BAD_HIGH_SLOT)
|
|
#define nfserr_deadsession cpu_to_be32(NFS4ERR_DEADSESSION)
|
|
#define nfserr_encr_alg_unsupp cpu_to_be32(NFS4ERR_ENCR_ALG_UNSUPP)
|
|
#define nfserr_pnfs_no_layout cpu_to_be32(NFS4ERR_PNFS_NO_LAYOUT)
|
|
#define nfserr_not_only_op cpu_to_be32(NFS4ERR_NOT_ONLY_OP)
|
|
#define nfserr_wrong_cred cpu_to_be32(NFS4ERR_WRONG_CRED)
|
|
#define nfserr_wrong_type cpu_to_be32(NFS4ERR_WRONG_TYPE)
|
|
#define nfserr_dirdeleg_unavail cpu_to_be32(NFS4ERR_DIRDELEG_UNAVAIL)
|
|
#define nfserr_reject_deleg cpu_to_be32(NFS4ERR_REJECT_DELEG)
|
|
#define nfserr_returnconflict cpu_to_be32(NFS4ERR_RETURNCONFLICT)
|
|
#define nfserr_deleg_revoked cpu_to_be32(NFS4ERR_DELEG_REVOKED)
|
|
#define nfserr_partner_notsupp cpu_to_be32(NFS4ERR_PARTNER_NOTSUPP)
|
|
#define nfserr_partner_no_auth cpu_to_be32(NFS4ERR_PARTNER_NO_AUTH)
|
|
#define nfserr_union_notsupp cpu_to_be32(NFS4ERR_UNION_NOTSUPP)
|
|
#define nfserr_offload_denied cpu_to_be32(NFS4ERR_OFFLOAD_DENIED)
|
|
#define nfserr_wrong_lfs cpu_to_be32(NFS4ERR_WRONG_LFS)
|
|
#define nfserr_badlabel cpu_to_be32(NFS4ERR_BADLABEL)
|
|
|
|
/* error codes for internal use */
|
|
/* if a request fails due to kmalloc failure, it gets dropped.
|
|
* Client should resend eventually
|
|
*/
|
|
#define nfserr_dropit cpu_to_be32(30000)
|
|
/* end-of-file indicator in readdir */
|
|
#define nfserr_eof cpu_to_be32(30001)
|
|
/* replay detected */
|
|
#define nfserr_replay_me cpu_to_be32(11001)
|
|
/* nfs41 replay detected */
|
|
#define nfserr_replay_cache cpu_to_be32(11002)
|
|
|
|
/* Check for dir entries '.' and '..' */
|
|
#define isdotent(n, l) (l < 3 && n[0] == '.' && (l == 1 || n[1] == '.'))
|
|
|
|
#ifdef CONFIG_NFSD_V4
|
|
|
|
/* before processing a COMPOUND operation, we have to check that there
|
|
* is enough space in the buffer for XDR encode to succeed. otherwise,
|
|
* we might process an operation with side effects, and be unable to
|
|
* tell the client that the operation succeeded.
|
|
*
|
|
* COMPOUND_SLACK_SPACE - this is the minimum bytes of buffer space
|
|
* needed to encode an "ordinary" _successful_ operation. (GETATTR,
|
|
* READ, READDIR, and READLINK have their own buffer checks.) if we
|
|
* fall below this level, we fail the next operation with NFS4ERR_RESOURCE.
|
|
*
|
|
* COMPOUND_ERR_SLACK_SPACE - this is the minimum bytes of buffer space
|
|
* needed to encode an operation which has failed with NFS4ERR_RESOURCE.
|
|
* care is taken to ensure that we never fall below this level for any
|
|
* reason.
|
|
*/
|
|
#define COMPOUND_SLACK_SPACE 140 /* OP_GETFH */
|
|
#define COMPOUND_ERR_SLACK_SPACE 16 /* OP_SETATTR */
|
|
|
|
#define NFSD_LAUNDROMAT_MINTIMEOUT 1 /* seconds */
|
|
|
|
/*
|
|
* The following attributes are currently not supported by the NFSv4 server:
|
|
* ARCHIVE (deprecated anyway)
|
|
* HIDDEN (unlikely to be supported any time soon)
|
|
* MIMETYPE (unlikely to be supported any time soon)
|
|
* QUOTA_* (will be supported in a forthcoming patch)
|
|
* SYSTEM (unlikely to be supported any time soon)
|
|
* TIME_BACKUP (unlikely to be supported any time soon)
|
|
* TIME_CREATE (unlikely to be supported any time soon)
|
|
*/
|
|
#define NFSD4_SUPPORTED_ATTRS_WORD0 \
|
|
(FATTR4_WORD0_SUPPORTED_ATTRS | FATTR4_WORD0_TYPE | FATTR4_WORD0_FH_EXPIRE_TYPE \
|
|
| FATTR4_WORD0_CHANGE | FATTR4_WORD0_SIZE | FATTR4_WORD0_LINK_SUPPORT \
|
|
| FATTR4_WORD0_SYMLINK_SUPPORT | FATTR4_WORD0_NAMED_ATTR | FATTR4_WORD0_FSID \
|
|
| FATTR4_WORD0_UNIQUE_HANDLES | FATTR4_WORD0_LEASE_TIME | FATTR4_WORD0_RDATTR_ERROR \
|
|
| FATTR4_WORD0_ACLSUPPORT | FATTR4_WORD0_CANSETTIME | FATTR4_WORD0_CASE_INSENSITIVE \
|
|
| FATTR4_WORD0_CASE_PRESERVING | FATTR4_WORD0_CHOWN_RESTRICTED \
|
|
| FATTR4_WORD0_FILEHANDLE | FATTR4_WORD0_FILEID | FATTR4_WORD0_FILES_AVAIL \
|
|
| FATTR4_WORD0_FILES_FREE | FATTR4_WORD0_FILES_TOTAL | FATTR4_WORD0_FS_LOCATIONS | FATTR4_WORD0_HOMOGENEOUS \
|
|
| FATTR4_WORD0_MAXFILESIZE | FATTR4_WORD0_MAXLINK | FATTR4_WORD0_MAXNAME \
|
|
| FATTR4_WORD0_MAXREAD | FATTR4_WORD0_MAXWRITE | FATTR4_WORD0_ACL)
|
|
|
|
#define NFSD4_SUPPORTED_ATTRS_WORD1 \
|
|
(FATTR4_WORD1_MODE | FATTR4_WORD1_NO_TRUNC | FATTR4_WORD1_NUMLINKS \
|
|
| FATTR4_WORD1_OWNER | FATTR4_WORD1_OWNER_GROUP | FATTR4_WORD1_RAWDEV \
|
|
| FATTR4_WORD1_SPACE_AVAIL | FATTR4_WORD1_SPACE_FREE | FATTR4_WORD1_SPACE_TOTAL \
|
|
| FATTR4_WORD1_SPACE_USED | FATTR4_WORD1_TIME_ACCESS | FATTR4_WORD1_TIME_ACCESS_SET \
|
|
| FATTR4_WORD1_TIME_DELTA | FATTR4_WORD1_TIME_METADATA \
|
|
| FATTR4_WORD1_TIME_MODIFY | FATTR4_WORD1_TIME_MODIFY_SET | FATTR4_WORD1_MOUNTED_ON_FILEID)
|
|
|
|
#define NFSD4_SUPPORTED_ATTRS_WORD2 0
|
|
|
|
/* 4.1 */
|
|
#ifdef CONFIG_NFSD_PNFS
|
|
#define PNFSD_SUPPORTED_ATTRS_WORD1 FATTR4_WORD1_FS_LAYOUT_TYPES
|
|
#define PNFSD_SUPPORTED_ATTRS_WORD2 \
|
|
(FATTR4_WORD2_LAYOUT_BLKSIZE | FATTR4_WORD2_LAYOUT_TYPES)
|
|
#else
|
|
#define PNFSD_SUPPORTED_ATTRS_WORD1 0
|
|
#define PNFSD_SUPPORTED_ATTRS_WORD2 0
|
|
#endif /* CONFIG_NFSD_PNFS */
|
|
|
|
#define NFSD4_1_SUPPORTED_ATTRS_WORD0 \
|
|
NFSD4_SUPPORTED_ATTRS_WORD0
|
|
|
|
#define NFSD4_1_SUPPORTED_ATTRS_WORD1 \
|
|
(NFSD4_SUPPORTED_ATTRS_WORD1 | PNFSD_SUPPORTED_ATTRS_WORD1)
|
|
|
|
#define NFSD4_1_SUPPORTED_ATTRS_WORD2 \
|
|
(NFSD4_SUPPORTED_ATTRS_WORD2 | PNFSD_SUPPORTED_ATTRS_WORD2 | \
|
|
FATTR4_WORD2_SUPPATTR_EXCLCREAT)
|
|
|
|
/* 4.2 */
|
|
#ifdef CONFIG_NFSD_V4_SECURITY_LABEL
|
|
#define NFSD4_2_SECURITY_ATTRS FATTR4_WORD2_SECURITY_LABEL
|
|
#else
|
|
#define NFSD4_2_SECURITY_ATTRS 0
|
|
#endif
|
|
|
|
#define NFSD4_2_SUPPORTED_ATTRS_WORD2 \
|
|
(NFSD4_1_SUPPORTED_ATTRS_WORD2 | \
|
|
FATTR4_WORD2_CHANGE_ATTR_TYPE | \
|
|
FATTR4_WORD2_MODE_UMASK | \
|
|
NFSD4_2_SECURITY_ATTRS)
|
|
|
|
extern const u32 nfsd_suppattrs[3][3];
|
|
|
|
static inline bool bmval_is_subset(const u32 *bm1, const u32 *bm2)
|
|
{
|
|
return !((bm1[0] & ~bm2[0]) ||
|
|
(bm1[1] & ~bm2[1]) ||
|
|
(bm1[2] & ~bm2[2]));
|
|
}
|
|
|
|
static inline bool nfsd_attrs_supported(u32 minorversion, const u32 *bmval)
|
|
{
|
|
return bmval_is_subset(bmval, nfsd_suppattrs[minorversion]);
|
|
}
|
|
|
|
/* These will return ERR_INVAL if specified in GETATTR or READDIR. */
|
|
#define NFSD_WRITEONLY_ATTRS_WORD1 \
|
|
(FATTR4_WORD1_TIME_ACCESS_SET | FATTR4_WORD1_TIME_MODIFY_SET)
|
|
|
|
/*
|
|
* These are the only attrs allowed in CREATE/OPEN/SETATTR. Don't add
|
|
* a writeable attribute here without also adding code to parse it to
|
|
* nfsd4_decode_fattr().
|
|
*/
|
|
#define NFSD_WRITEABLE_ATTRS_WORD0 \
|
|
(FATTR4_WORD0_SIZE | FATTR4_WORD0_ACL)
|
|
#define NFSD_WRITEABLE_ATTRS_WORD1 \
|
|
(FATTR4_WORD1_MODE | FATTR4_WORD1_OWNER | FATTR4_WORD1_OWNER_GROUP \
|
|
| FATTR4_WORD1_TIME_ACCESS_SET | FATTR4_WORD1_TIME_MODIFY_SET)
|
|
#ifdef CONFIG_NFSD_V4_SECURITY_LABEL
|
|
#define MAYBE_FATTR4_WORD2_SECURITY_LABEL \
|
|
FATTR4_WORD2_SECURITY_LABEL
|
|
#else
|
|
#define MAYBE_FATTR4_WORD2_SECURITY_LABEL 0
|
|
#endif
|
|
#define NFSD_WRITEABLE_ATTRS_WORD2 \
|
|
(FATTR4_WORD2_MODE_UMASK \
|
|
| MAYBE_FATTR4_WORD2_SECURITY_LABEL)
|
|
|
|
#define NFSD_SUPPATTR_EXCLCREAT_WORD0 \
|
|
NFSD_WRITEABLE_ATTRS_WORD0
|
|
/*
|
|
* we currently store the exclusive create verifier in the v_{a,m}time
|
|
* attributes so the client can't set these at create time using EXCLUSIVE4_1
|
|
*/
|
|
#define NFSD_SUPPATTR_EXCLCREAT_WORD1 \
|
|
(NFSD_WRITEABLE_ATTRS_WORD1 & \
|
|
~(FATTR4_WORD1_TIME_ACCESS_SET | FATTR4_WORD1_TIME_MODIFY_SET))
|
|
#define NFSD_SUPPATTR_EXCLCREAT_WORD2 \
|
|
NFSD_WRITEABLE_ATTRS_WORD2
|
|
|
|
extern int nfsd4_is_junction(struct dentry *dentry);
|
|
extern int register_cld_notifier(void);
|
|
extern void unregister_cld_notifier(void);
|
|
#else /* CONFIG_NFSD_V4 */
|
|
static inline int nfsd4_is_junction(struct dentry *dentry)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
#define register_cld_notifier() 0
|
|
#define unregister_cld_notifier() do { } while(0)
|
|
|
|
#endif /* CONFIG_NFSD_V4 */
|
|
|
|
#endif /* LINUX_NFSD_NFSD_H */
|