1 files changed, 338 insertions, 0 deletions
diff --git a/fs/nfsd/nfsd.h b/fs/nfsd/nfsd.h
new file mode 100644
index 000000000000..e942a1aaac92
--- /dev/null
+++ b/fs/nfsd/nfsd.h
@@ -0,0 +1,338 @@
+/*
+ * 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/nfsd/debug.h>
+#include <linux/nfsd/export.h>
+#include <linux/nfsd/stats.h>
+/*
+ * nfsd version
+ */
+#define NFSD_SUPPORTED_MINOR_VERSION    1
+struct readdir_cd {
+        __be32                  err;    /* 0, nfserr, or nfserr_eof */
+};
+extern struct svc_program       nfsd_program;
+extern struct svc_version       nfsd_version2, nfsd_version3,
+                                nfsd_version4;
+extern u32                      nfsd_supported_minorversion;
+extern struct mutex             nfsd_mutex;
+extern struct svc_serv          *nfsd_serv;
+extern spinlock_t               nfsd_drc_lock;
+extern unsigned int             nfsd_drc_max_mem;
+extern unsigned int             nfsd_drc_mem_used;
+extern const struct seq_operations nfs_exports_op;
+/*
+ * Function prototypes.
+ */
+int             nfsd_svc(unsigned short port, int nrservs);
+int             nfsd_dispatch(struct svc_rqst *rqstp, __be32 *statp);
+int             nfsd_nrthreads(void);
+int             nfsd_nrpools(void);
+int             nfsd_get_nrthreads(int n, int *);
+int             nfsd_set_nrthreads(int n, int *);
+#if defined(CONFIG_NFSD_V2_ACL) || defined(CONFIG_NFSD_V3_ACL)
+#ifdef CONFIG_NFSD_V2_ACL
+extern struct svc_version nfsd_acl_version2;
+#else
+#define nfsd_acl_version2 NULL
+#endif
+#ifdef CONFIG_NFSD_V3_ACL
+extern struct svc_version nfsd_acl_version3;
+#else
+#define nfsd_acl_version3 NULL
+#endif
+#endif
+enum vers_op {NFSD_SET, NFSD_CLEAR, NFSD_TEST, NFSD_AVAIL };
+int nfsd_vers(int vers, enum vers_op change);
+int nfsd_minorversion(u32 minorversion, enum vers_op change);
+void nfsd_reset_versions(void);
+int nfsd_create_serv(void);
+extern int nfsd_max_blksize;
+static inline int nfsd_v4client(struct svc_rqst *rq)
+{
+        return rq->rq_prog == NFS_PROGRAM && rq->rq_vers == 4;
+}
+/* 
+ * NFSv4 State
+ */
+#ifdef CONFIG_NFSD_V4
+extern unsigned int max_delegations;
+int nfs4_state_init(void);
+void nfsd4_free_slabs(void);
+int nfs4_state_start(void);
+void nfs4_state_shutdown(void);
+time_t nfs4_lease_time(void);
+void nfs4_reset_lease(time_t leasetime);
+int nfs4_reset_recoverydir(char *recdir);
+#else
+static inline int nfs4_state_init(void) { return 0; }
+static inline void nfsd4_free_slabs(void) { }
+static inline int nfs4_state_start(void) { return 0; }
+static inline void nfs4_state_shutdown(void) { }
+static inline time_t nfs4_lease_time(void) { return 0; }
+static inline void nfs4_reset_lease(time_t leasetime) { }
+static inline int nfs4_reset_recoverydir(char *recdir) { return 0; }
+#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_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_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)
+/* 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] == '.'))
+/*
+ * Time of server startup
+ */
+extern struct timeval   nfssvc_boot;
+#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        12     /* OP_SETATTR */
+#define NFSD_LEASE_TIME                 (nfs4_lease_time())
+#define NFSD_LAUNDROMAT_MINTIMEOUT      10   /* 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
+#define NFSD4_1_SUPPORTED_ATTRS_WORD0 \
+        NFSD4_SUPPORTED_ATTRS_WORD0
+#define NFSD4_1_SUPPORTED_ATTRS_WORD1 \
+        NFSD4_SUPPORTED_ATTRS_WORD1
+#define NFSD4_1_SUPPORTED_ATTRS_WORD2 \
+        (NFSD4_SUPPORTED_ATTRS_WORD2 | FATTR4_WORD2_SUPPATTR_EXCLCREAT)
+static inline u32 nfsd_suppattrs0(u32 minorversion)
+{
+        return minorversion ? NFSD4_1_SUPPORTED_ATTRS_WORD0
+                            : NFSD4_SUPPORTED_ATTRS_WORD0;
+}
+static inline u32 nfsd_suppattrs1(u32 minorversion)
+{
+        return minorversion ? NFSD4_1_SUPPORTED_ATTRS_WORD1
+                            : NFSD4_SUPPORTED_ATTRS_WORD1;
+}
+static inline u32 nfsd_suppattrs2(u32 minorversion)
+{
+        return minorversion ? NFSD4_1_SUPPORTED_ATTRS_WORD2
+                            : NFSD4_SUPPORTED_ATTRS_WORD2;
+}
+/* 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. */
+#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)
+#define NFSD_WRITEABLE_ATTRS_WORD2 0
+#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
+#endif /* CONFIG_NFSD_V4 */
+#endif /* LINUX_NFSD_NFSD_H */

diff --git a/fs/nfsd/nfsd.h b/fs/nfsd/nfsd.h new file mode 100644 index 000000000000..e942a1aaac92 --- /dev/null +++ b/fs/nfsd/nfsd.h
@@ -0,0 +1,338 @@
	1	/*
	2	* Hodge-podge collection of knfsd-related stuff.
	3	* I will sort this out later.
	4	*
	5	* Copyright (C) 1995-1997 Olaf Kirch <okir@monad.swb.de>
	6	*/
	7
	8	#ifndef LINUX_NFSD_NFSD_H
	9	#define LINUX_NFSD_NFSD_H
	10
	11	#include <linux/types.h>
	12	#include <linux/mount.h>
	13
	14	#include <linux/nfsd/debug.h>
	15	#include <linux/nfsd/export.h>
	16	#include <linux/nfsd/stats.h>
	17	/*
	18	* nfsd version
	19	*/
	20	#define NFSD_SUPPORTED_MINOR_VERSION 1
	21
	22	struct readdir_cd {
	23	__be32 err; /* 0, nfserr, or nfserr_eof */
	24	};
	25
	26
	27	extern struct svc_program nfsd_program;
	28	extern struct svc_version nfsd_version2, nfsd_version3,
	29	nfsd_version4;
	30	extern u32 nfsd_supported_minorversion;
	31	extern struct mutex nfsd_mutex;
	32	extern struct svc_serv *nfsd_serv;
	33	extern spinlock_t nfsd_drc_lock;
	34	extern unsigned int nfsd_drc_max_mem;
	35	extern unsigned int nfsd_drc_mem_used;
	36
	37	extern const struct seq_operations nfs_exports_op;
	38
	39	/*
	40	* Function prototypes.
	41	*/
	42	int nfsd_svc(unsigned short port, int nrservs);
	43	int nfsd_dispatch(struct svc_rqst rqstp, __be32 statp);
	44
	45	int nfsd_nrthreads(void);
	46	int nfsd_nrpools(void);
	47	int nfsd_get_nrthreads(int n, int *);
	48	int nfsd_set_nrthreads(int n, int *);
	49
	50	#if defined(CONFIG_NFSD_V2_ACL) \|\| defined(CONFIG_NFSD_V3_ACL)
	51	#ifdef CONFIG_NFSD_V2_ACL
	52	extern struct svc_version nfsd_acl_version2;
	53	#else
	54	#define nfsd_acl_version2 NULL
	55	#endif
	56	#ifdef CONFIG_NFSD_V3_ACL
	57	extern struct svc_version nfsd_acl_version3;
	58	#else
	59	#define nfsd_acl_version3 NULL
	60	#endif
	61	#endif
	62
	63	enum vers_op {NFSD_SET, NFSD_CLEAR, NFSD_TEST, NFSD_AVAIL };
	64	int nfsd_vers(int vers, enum vers_op change);
	65	int nfsd_minorversion(u32 minorversion, enum vers_op change);
	66	void nfsd_reset_versions(void);
	67	int nfsd_create_serv(void);
	68
	69	extern int nfsd_max_blksize;
	70
	71	static inline int nfsd_v4client(struct svc_rqst *rq)
	72	{
	73	return rq->rq_prog == NFS_PROGRAM && rq->rq_vers == 4;
	74	}
	75
	76	/*
	77	* NFSv4 State
	78	*/
	79	#ifdef CONFIG_NFSD_V4
	80	extern unsigned int max_delegations;
	81	int nfs4_state_init(void);
	82	void nfsd4_free_slabs(void);
	83	int nfs4_state_start(void);
	84	void nfs4_state_shutdown(void);
	85	time_t nfs4_lease_time(void);
	86	void nfs4_reset_lease(time_t leasetime);
	87	int nfs4_reset_recoverydir(char *recdir);
	88	#else
	89	static inline int nfs4_state_init(void) { return 0; }
	90	static inline void nfsd4_free_slabs(void) { }
	91	static inline int nfs4_state_start(void) { return 0; }
	92	static inline void nfs4_state_shutdown(void) { }
	93	static inline time_t nfs4_lease_time(void) { return 0; }
	94	static inline void nfs4_reset_lease(time_t leasetime) { }
	95	static inline int nfs4_reset_recoverydir(char *recdir) { return 0; }
	96	#endif
	97
	98	/*
	99	* lockd binding
	100	*/
	101	void nfsd_lockd_init(void);
	102	void nfsd_lockd_shutdown(void);
	103
	104
	105	/*
	106	* These macros provide pre-xdr'ed values for faster operation.
	107	*/
	108	#define nfs_ok cpu_to_be32(NFS_OK)
	109	#define nfserr_perm cpu_to_be32(NFSERR_PERM)
	110	#define nfserr_noent cpu_to_be32(NFSERR_NOENT)
	111	#define nfserr_io cpu_to_be32(NFSERR_IO)
	112	#define nfserr_nxio cpu_to_be32(NFSERR_NXIO)
	113	#define nfserr_eagain cpu_to_be32(NFSERR_EAGAIN)
	114	#define nfserr_acces cpu_to_be32(NFSERR_ACCES)
	115	#define nfserr_exist cpu_to_be32(NFSERR_EXIST)
	116	#define nfserr_xdev cpu_to_be32(NFSERR_XDEV)
	117	#define nfserr_nodev cpu_to_be32(NFSERR_NODEV)
	118	#define nfserr_notdir cpu_to_be32(NFSERR_NOTDIR)
	119	#define nfserr_isdir cpu_to_be32(NFSERR_ISDIR)
	120	#define nfserr_inval cpu_to_be32(NFSERR_INVAL)
	121	#define nfserr_fbig cpu_to_be32(NFSERR_FBIG)
	122	#define nfserr_nospc cpu_to_be32(NFSERR_NOSPC)
	123	#define nfserr_rofs cpu_to_be32(NFSERR_ROFS)
	124	#define nfserr_mlink cpu_to_be32(NFSERR_MLINK)
	125	#define nfserr_opnotsupp cpu_to_be32(NFSERR_OPNOTSUPP)
	126	#define nfserr_nametoolong cpu_to_be32(NFSERR_NAMETOOLONG)
	127	#define nfserr_notempty cpu_to_be32(NFSERR_NOTEMPTY)
	128	#define nfserr_dquot cpu_to_be32(NFSERR_DQUOT)
	129	#define nfserr_stale cpu_to_be32(NFSERR_STALE)
	130	#define nfserr_remote cpu_to_be32(NFSERR_REMOTE)
	131	#define nfserr_wflush cpu_to_be32(NFSERR_WFLUSH)
	132	#define nfserr_badhandle cpu_to_be32(NFSERR_BADHANDLE)
	133	#define nfserr_notsync cpu_to_be32(NFSERR_NOT_SYNC)
	134	#define nfserr_badcookie cpu_to_be32(NFSERR_BAD_COOKIE)
	135	#define nfserr_notsupp cpu_to_be32(NFSERR_NOTSUPP)
	136	#define nfserr_toosmall cpu_to_be32(NFSERR_TOOSMALL)
	137	#define nfserr_serverfault cpu_to_be32(NFSERR_SERVERFAULT)
	138	#define nfserr_badtype cpu_to_be32(NFSERR_BADTYPE)
	139	#define nfserr_jukebox cpu_to_be32(NFSERR_JUKEBOX)
	140	#define nfserr_denied cpu_to_be32(NFSERR_DENIED)
	141	#define nfserr_deadlock cpu_to_be32(NFSERR_DEADLOCK)
	142	#define nfserr_expired cpu_to_be32(NFSERR_EXPIRED)
	143	#define nfserr_bad_cookie cpu_to_be32(NFSERR_BAD_COOKIE)
	144	#define nfserr_same cpu_to_be32(NFSERR_SAME)
	145	#define nfserr_clid_inuse cpu_to_be32(NFSERR_CLID_INUSE)
	146	#define nfserr_stale_clientid cpu_to_be32(NFSERR_STALE_CLIENTID)
	147	#define nfserr_resource cpu_to_be32(NFSERR_RESOURCE)
	148	#define nfserr_moved cpu_to_be32(NFSERR_MOVED)
	149	#define nfserr_nofilehandle cpu_to_be32(NFSERR_NOFILEHANDLE)
	150	#define nfserr_minor_vers_mismatch cpu_to_be32(NFSERR_MINOR_VERS_MISMATCH)
	151	#define nfserr_share_denied cpu_to_be32(NFSERR_SHARE_DENIED)
	152	#define nfserr_stale_stateid cpu_to_be32(NFSERR_STALE_STATEID)
	153	#define nfserr_old_stateid cpu_to_be32(NFSERR_OLD_STATEID)
	154	#define nfserr_bad_stateid cpu_to_be32(NFSERR_BAD_STATEID)
	155	#define nfserr_bad_seqid cpu_to_be32(NFSERR_BAD_SEQID)
	156	#define nfserr_symlink cpu_to_be32(NFSERR_SYMLINK)
	157	#define nfserr_not_same cpu_to_be32(NFSERR_NOT_SAME)
	158	#define nfserr_restorefh cpu_to_be32(NFSERR_RESTOREFH)
	159	#define nfserr_attrnotsupp cpu_to_be32(NFSERR_ATTRNOTSUPP)
	160	#define nfserr_bad_xdr cpu_to_be32(NFSERR_BAD_XDR)
	161	#define nfserr_openmode cpu_to_be32(NFSERR_OPENMODE)
	162	#define nfserr_locks_held cpu_to_be32(NFSERR_LOCKS_HELD)
	163	#define nfserr_op_illegal cpu_to_be32(NFSERR_OP_ILLEGAL)
	164	#define nfserr_grace cpu_to_be32(NFSERR_GRACE)
	165	#define nfserr_no_grace cpu_to_be32(NFSERR_NO_GRACE)
	166	#define nfserr_reclaim_bad cpu_to_be32(NFSERR_RECLAIM_BAD)
	167	#define nfserr_badname cpu_to_be32(NFSERR_BADNAME)
	168	#define nfserr_cb_path_down cpu_to_be32(NFSERR_CB_PATH_DOWN)
	169	#define nfserr_locked cpu_to_be32(NFSERR_LOCKED)
	170	#define nfserr_wrongsec cpu_to_be32(NFSERR_WRONGSEC)
	171	#define nfserr_badiomode cpu_to_be32(NFS4ERR_BADIOMODE)
	172	#define nfserr_badlayout cpu_to_be32(NFS4ERR_BADLAYOUT)
	173	#define nfserr_bad_session_digest cpu_to_be32(NFS4ERR_BAD_SESSION_DIGEST)
	174	#define nfserr_badsession cpu_to_be32(NFS4ERR_BADSESSION)
	175	#define nfserr_badslot cpu_to_be32(NFS4ERR_BADSLOT)
	176	#define nfserr_complete_already cpu_to_be32(NFS4ERR_COMPLETE_ALREADY)
	177	#define nfserr_conn_not_bound_to_session cpu_to_be32(NFS4ERR_CONN_NOT_BOUND_TO_SESSION)
	178	#define nfserr_deleg_already_wanted cpu_to_be32(NFS4ERR_DELEG_ALREADY_WANTED)
	179	#define nfserr_back_chan_busy cpu_to_be32(NFS4ERR_BACK_CHAN_BUSY)
	180	#define nfserr_layouttrylater cpu_to_be32(NFS4ERR_LAYOUTTRYLATER)
	181	#define nfserr_layoutunavailable cpu_to_be32(NFS4ERR_LAYOUTUNAVAILABLE)
	182	#define nfserr_nomatching_layout cpu_to_be32(NFS4ERR_NOMATCHING_LAYOUT)
	183	#define nfserr_recallconflict cpu_to_be32(NFS4ERR_RECALLCONFLICT)
	184	#define nfserr_unknown_layouttype cpu_to_be32(NFS4ERR_UNKNOWN_LAYOUTTYPE)
	185	#define nfserr_seq_misordered cpu_to_be32(NFS4ERR_SEQ_MISORDERED)
	186	#define nfserr_sequence_pos cpu_to_be32(NFS4ERR_SEQUENCE_POS)
	187	#define nfserr_req_too_big cpu_to_be32(NFS4ERR_REQ_TOO_BIG)
	188	#define nfserr_rep_too_big cpu_to_be32(NFS4ERR_REP_TOO_BIG)
	189	#define nfserr_rep_too_big_to_cache cpu_to_be32(NFS4ERR_REP_TOO_BIG_TO_CACHE)
	190	#define nfserr_retry_uncached_rep cpu_to_be32(NFS4ERR_RETRY_UNCACHED_REP)
	191	#define nfserr_unsafe_compound cpu_to_be32(NFS4ERR_UNSAFE_COMPOUND)
	192	#define nfserr_too_many_ops cpu_to_be32(NFS4ERR_TOO_MANY_OPS)
	193	#define nfserr_op_not_in_session cpu_to_be32(NFS4ERR_OP_NOT_IN_SESSION)
	194	#define nfserr_hash_alg_unsupp cpu_to_be32(NFS4ERR_HASH_ALG_UNSUPP)
	195	#define nfserr_clientid_busy cpu_to_be32(NFS4ERR_CLIENTID_BUSY)
	196	#define nfserr_pnfs_io_hole cpu_to_be32(NFS4ERR_PNFS_IO_HOLE)
	197	#define nfserr_seq_false_retry cpu_to_be32(NFS4ERR_SEQ_FALSE_RETRY)
	198	#define nfserr_bad_high_slot cpu_to_be32(NFS4ERR_BAD_HIGH_SLOT)
	199	#define nfserr_deadsession cpu_to_be32(NFS4ERR_DEADSESSION)
	200	#define nfserr_encr_alg_unsupp cpu_to_be32(NFS4ERR_ENCR_ALG_UNSUPP)
	201	#define nfserr_pnfs_no_layout cpu_to_be32(NFS4ERR_PNFS_NO_LAYOUT)
	202	#define nfserr_not_only_op cpu_to_be32(NFS4ERR_NOT_ONLY_OP)
	203	#define nfserr_wrong_cred cpu_to_be32(NFS4ERR_WRONG_CRED)
	204	#define nfserr_wrong_type cpu_to_be32(NFS4ERR_WRONG_TYPE)
	205	#define nfserr_dirdeleg_unavail cpu_to_be32(NFS4ERR_DIRDELEG_UNAVAIL)
	206	#define nfserr_reject_deleg cpu_to_be32(NFS4ERR_REJECT_DELEG)
	207	#define nfserr_returnconflict cpu_to_be32(NFS4ERR_RETURNCONFLICT)
	208	#define nfserr_deleg_revoked cpu_to_be32(NFS4ERR_DELEG_REVOKED)
	209
	210	/* error codes for internal use */
	211	/* if a request fails due to kmalloc failure, it gets dropped.
	212	* Client should resend eventually
	213	*/
	214	#define nfserr_dropit cpu_to_be32(30000)
	215	/* end-of-file indicator in readdir */
	216	#define nfserr_eof cpu_to_be32(30001)
	217	/* replay detected */
	218	#define nfserr_replay_me cpu_to_be32(11001)
	219	/* nfs41 replay detected */
	220	#define nfserr_replay_cache cpu_to_be32(11002)
	221
	222	/* Check for dir entries '.' and '..' */
	223	#define isdotent(n, l) (l < 3 && n[0] == '.' && (l == 1 \|\| n[1] == '.'))
	224
	225	/*
	226	* Time of server startup
	227	*/
	228	extern struct timeval nfssvc_boot;
	229
	230	#ifdef CONFIG_NFSD_V4
	231
	232	/* before processing a COMPOUND operation, we have to check that there
	233	* is enough space in the buffer for XDR encode to succeed. otherwise,
	234	* we might process an operation with side effects, and be unable to
	235	* tell the client that the operation succeeded.
	236	*
	237	* COMPOUND_SLACK_SPACE - this is the minimum bytes of buffer space
	238	* needed to encode an "ordinary" _successful_ operation. (GETATTR,
	239	* READ, READDIR, and READLINK have their own buffer checks.) if we
	240	* fall below this level, we fail the next operation with NFS4ERR_RESOURCE.
	241	*
	242	* COMPOUND_ERR_SLACK_SPACE - this is the minimum bytes of buffer space
	243	* needed to encode an operation which has failed with NFS4ERR_RESOURCE.
	244	* care is taken to ensure that we never fall below this level for any
	245	* reason.
	246	*/
	247	#define COMPOUND_SLACK_SPACE 140 /* OP_GETFH */
	248	#define COMPOUND_ERR_SLACK_SPACE 12 /* OP_SETATTR */
	249
	250	#define NFSD_LEASE_TIME (nfs4_lease_time())
	251	#define NFSD_LAUNDROMAT_MINTIMEOUT 10 /* seconds */
	252
	253	/*
	254	* The following attributes are currently not supported by the NFSv4 server:
	255	* ARCHIVE (deprecated anyway)
	256	* HIDDEN (unlikely to be supported any time soon)
	257	* MIMETYPE (unlikely to be supported any time soon)
	258	* QUOTA_* (will be supported in a forthcoming patch)
	259	* SYSTEM (unlikely to be supported any time soon)
	260	* TIME_BACKUP (unlikely to be supported any time soon)
	261	* TIME_CREATE (unlikely to be supported any time soon)
	262	*/
	263	#define NFSD4_SUPPORTED_ATTRS_WORD0 \
	264	(FATTR4_WORD0_SUPPORTED_ATTRS \| FATTR4_WORD0_TYPE \| FATTR4_WORD0_FH_EXPIRE_TYPE \
	265	\| FATTR4_WORD0_CHANGE \| FATTR4_WORD0_SIZE \| FATTR4_WORD0_LINK_SUPPORT \
	266	\| FATTR4_WORD0_SYMLINK_SUPPORT \| FATTR4_WORD0_NAMED_ATTR \| FATTR4_WORD0_FSID \
	267	\| FATTR4_WORD0_UNIQUE_HANDLES \| FATTR4_WORD0_LEASE_TIME \| FATTR4_WORD0_RDATTR_ERROR \
	268	\| FATTR4_WORD0_ACLSUPPORT \| FATTR4_WORD0_CANSETTIME \| FATTR4_WORD0_CASE_INSENSITIVE \
	269	\| FATTR4_WORD0_CASE_PRESERVING \| FATTR4_WORD0_CHOWN_RESTRICTED \
	270	\| FATTR4_WORD0_FILEHANDLE \| FATTR4_WORD0_FILEID \| FATTR4_WORD0_FILES_AVAIL \
	271	\| FATTR4_WORD0_FILES_FREE \| FATTR4_WORD0_FILES_TOTAL \| FATTR4_WORD0_FS_LOCATIONS \| FATTR4_WORD0_HOMOGENEOUS \
	272	\| FATTR4_WORD0_MAXFILESIZE \| FATTR4_WORD0_MAXLINK \| FATTR4_WORD0_MAXNAME \
	273	\| FATTR4_WORD0_MAXREAD \| FATTR4_WORD0_MAXWRITE \| FATTR4_WORD0_ACL)
	274
	275	#define NFSD4_SUPPORTED_ATTRS_WORD1 \
	276	(FATTR4_WORD1_MODE \| FATTR4_WORD1_NO_TRUNC \| FATTR4_WORD1_NUMLINKS \
	277	\| FATTR4_WORD1_OWNER \| FATTR4_WORD1_OWNER_GROUP \| FATTR4_WORD1_RAWDEV \
	278	\| FATTR4_WORD1_SPACE_AVAIL \| FATTR4_WORD1_SPACE_FREE \| FATTR4_WORD1_SPACE_TOTAL \
	279	\| FATTR4_WORD1_SPACE_USED \| FATTR4_WORD1_TIME_ACCESS \| FATTR4_WORD1_TIME_ACCESS_SET \
	280	\| FATTR4_WORD1_TIME_DELTA \| FATTR4_WORD1_TIME_METADATA \
	281	\| FATTR4_WORD1_TIME_MODIFY \| FATTR4_WORD1_TIME_MODIFY_SET \| FATTR4_WORD1_MOUNTED_ON_FILEID)
	282
	283	#define NFSD4_SUPPORTED_ATTRS_WORD2 0
	284
	285	#define NFSD4_1_SUPPORTED_ATTRS_WORD0 \
	286	NFSD4_SUPPORTED_ATTRS_WORD0
	287
	288	#define NFSD4_1_SUPPORTED_ATTRS_WORD1 \
	289	NFSD4_SUPPORTED_ATTRS_WORD1
	290
	291	#define NFSD4_1_SUPPORTED_ATTRS_WORD2 \
	292	(NFSD4_SUPPORTED_ATTRS_WORD2 \| FATTR4_WORD2_SUPPATTR_EXCLCREAT)
	293
	294	static inline u32 nfsd_suppattrs0(u32 minorversion)
	295	{
	296	return minorversion ? NFSD4_1_SUPPORTED_ATTRS_WORD0
	297	: NFSD4_SUPPORTED_ATTRS_WORD0;
	298	}
	299
	300	static inline u32 nfsd_suppattrs1(u32 minorversion)
	301	{
	302	return minorversion ? NFSD4_1_SUPPORTED_ATTRS_WORD1
	303	: NFSD4_SUPPORTED_ATTRS_WORD1;
	304	}
	305
	306	static inline u32 nfsd_suppattrs2(u32 minorversion)
	307	{
	308	return minorversion ? NFSD4_1_SUPPORTED_ATTRS_WORD2
	309	: NFSD4_SUPPORTED_ATTRS_WORD2;
	310	}
	311
	312	/* These will return ERR_INVAL if specified in GETATTR or READDIR. */
	313	#define NFSD_WRITEONLY_ATTRS_WORD1 \
	314	(FATTR4_WORD1_TIME_ACCESS_SET \| FATTR4_WORD1_TIME_MODIFY_SET)
	315
	316	/* These are the only attrs allowed in CREATE/OPEN/SETATTR. */
	317	#define NFSD_WRITEABLE_ATTRS_WORD0 \
	318	(FATTR4_WORD0_SIZE \| FATTR4_WORD0_ACL )
	319	#define NFSD_WRITEABLE_ATTRS_WORD1 \
	320	(FATTR4_WORD1_MODE \| FATTR4_WORD1_OWNER \| FATTR4_WORD1_OWNER_GROUP \
	321	\| FATTR4_WORD1_TIME_ACCESS_SET \| FATTR4_WORD1_TIME_MODIFY_SET)
	322	#define NFSD_WRITEABLE_ATTRS_WORD2 0
	323
	324	#define NFSD_SUPPATTR_EXCLCREAT_WORD0 \
	325	NFSD_WRITEABLE_ATTRS_WORD0
	326	/*
	327	* we currently store the exclusive create verifier in the v_{a,m}time
	328	* attributes so the client can't set these at create time using EXCLUSIVE4_1
	329	*/
	330	#define NFSD_SUPPATTR_EXCLCREAT_WORD1 \
	331	(NFSD_WRITEABLE_ATTRS_WORD1 & \
	332	~(FATTR4_WORD1_TIME_ACCESS_SET \| FATTR4_WORD1_TIME_MODIFY_SET))
	333	#define NFSD_SUPPATTR_EXCLCREAT_WORD2 \
	334	NFSD_WRITEABLE_ATTRS_WORD2
	335
	336	#endif /* CONFIG_NFSD_V4 */
	337
	338	#endif /* LINUX_NFSD_NFSD_H */