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-rw-r--r--fs/nfsd/xdr4.h894
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diff --git a/fs/nfsd/xdr4.h b/fs/nfsd/xdr4.h
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+++ b/fs/nfsd/xdr4.h
@@ -0,0 +1,894 @@
+/*
+ * Server-side types for NFSv4.
+ *
+ * Copyright (c) 2002 The Regents of the University of Michigan.
+ * All rights reserved.
+ *
+ * Kendrick Smith <kmsmith@umich.edu>
+ * Andy Adamson <andros@umich.edu>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef _LINUX_NFSD_XDR4_H
+#define _LINUX_NFSD_XDR4_H
+
+#include "state.h"
+#include "nfsd.h"
+
+#define NFSD4_MAX_TAGLEN 128
+#define XDR_LEN(n) (((n) + 3) & ~3)
+
+#define CURRENT_STATE_ID_FLAG (1<<0)
+#define SAVED_STATE_ID_FLAG (1<<1)
+
+#define SET_CSTATE_FLAG(c, f) ((c)->sid_flags |= (f))
+#define HAS_CSTATE_FLAG(c, f) ((c)->sid_flags & (f))
+#define CLEAR_CSTATE_FLAG(c, f) ((c)->sid_flags &= ~(f))
+
+struct nfsd4_compound_state {
+ struct svc_fh current_fh;
+ struct svc_fh save_fh;
+ struct nfs4_stateowner *replay_owner;
+ struct nfs4_client *clp;
+ /* For sessions DRC */
+ struct nfsd4_session *session;
+ struct nfsd4_slot *slot;
+ int data_offset;
+ bool spo_must_allowed;
+ size_t iovlen;
+ u32 minorversion;
+ __be32 status;
+ stateid_t current_stateid;
+ stateid_t save_stateid;
+ /* to indicate current and saved state id presents */
+ u32 sid_flags;
+};
+
+static inline bool nfsd4_has_session(struct nfsd4_compound_state *cs)
+{
+ return cs->slot != NULL;
+}
+
+struct nfsd4_change_info {
+ u32 atomic;
+ u64 before_change;
+ u64 after_change;
+};
+
+struct nfsd4_access {
+ u32 ac_req_access; /* request */
+ u32 ac_supported; /* response */
+ u32 ac_resp_access; /* response */
+};
+
+struct nfsd4_close {
+ u32 cl_seqid; /* request */
+ stateid_t cl_stateid; /* request+response */
+};
+
+struct nfsd4_commit {
+ u64 co_offset; /* request */
+ u32 co_count; /* request */
+ nfs4_verifier co_verf; /* response */
+};
+
+struct nfsd4_create {
+ u32 cr_namelen; /* request */
+ char * cr_name; /* request */
+ u32 cr_type; /* request */
+ union { /* request */
+ struct {
+ u32 datalen;
+ char *data;
+ struct kvec first;
+ } link; /* NF4LNK */
+ struct {
+ u32 specdata1;
+ u32 specdata2;
+ } dev; /* NF4BLK, NF4CHR */
+ } u;
+ u32 cr_bmval[3]; /* request */
+ struct iattr cr_iattr; /* request */
+ int cr_umask; /* request */
+ struct nfsd4_change_info cr_cinfo; /* response */
+ struct nfs4_acl *cr_acl;
+ struct xdr_netobj cr_label;
+};
+#define cr_datalen u.link.datalen
+#define cr_data u.link.data
+#define cr_first u.link.first
+#define cr_specdata1 u.dev.specdata1
+#define cr_specdata2 u.dev.specdata2
+
+struct nfsd4_delegreturn {
+ stateid_t dr_stateid;
+};
+
+struct nfsd4_getattr {
+ u32 ga_bmval[3]; /* request */
+ struct svc_fh *ga_fhp; /* response */
+};
+
+struct nfsd4_link {
+ u32 li_namelen; /* request */
+ char * li_name; /* request */
+ struct nfsd4_change_info li_cinfo; /* response */
+};
+
+struct nfsd4_lock_denied {
+ clientid_t ld_clientid;
+ struct xdr_netobj ld_owner;
+ u64 ld_start;
+ u64 ld_length;
+ u32 ld_type;
+};
+
+struct nfsd4_lock {
+ /* request */
+ u32 lk_type;
+ u32 lk_reclaim; /* boolean */
+ u64 lk_offset;
+ u64 lk_length;
+ u32 lk_is_new;
+ union {
+ struct {
+ u32 open_seqid;
+ stateid_t open_stateid;
+ u32 lock_seqid;
+ clientid_t clientid;
+ struct xdr_netobj owner;
+ } new;
+ struct {
+ stateid_t lock_stateid;
+ u32 lock_seqid;
+ } old;
+ } v;
+
+ /* response */
+ union {
+ struct {
+ stateid_t stateid;
+ } ok;
+ struct nfsd4_lock_denied denied;
+ } u;
+};
+#define lk_new_open_seqid v.new.open_seqid
+#define lk_new_open_stateid v.new.open_stateid
+#define lk_new_lock_seqid v.new.lock_seqid
+#define lk_new_clientid v.new.clientid
+#define lk_new_owner v.new.owner
+#define lk_old_lock_stateid v.old.lock_stateid
+#define lk_old_lock_seqid v.old.lock_seqid
+
+#define lk_resp_stateid u.ok.stateid
+#define lk_denied u.denied
+
+
+struct nfsd4_lockt {
+ u32 lt_type;
+ clientid_t lt_clientid;
+ struct xdr_netobj lt_owner;
+ u64 lt_offset;
+ u64 lt_length;
+ struct nfsd4_lock_denied lt_denied;
+};
+
+
+struct nfsd4_locku {
+ u32 lu_type;
+ u32 lu_seqid;
+ stateid_t lu_stateid;
+ u64 lu_offset;
+ u64 lu_length;
+};
+
+
+struct nfsd4_lookup {
+ u32 lo_len; /* request */
+ char * lo_name; /* request */
+};
+
+struct nfsd4_putfh {
+ u32 pf_fhlen; /* request */
+ char *pf_fhval; /* request */
+ bool no_verify; /* represents foreigh fh */
+};
+
+struct nfsd4_getxattr {
+ char *getxa_name; /* request */
+ u32 getxa_len; /* request */
+ void *getxa_buf;
+};
+
+struct nfsd4_setxattr {
+ u32 setxa_flags; /* request */
+ char *setxa_name; /* request */
+ char *setxa_buf; /* request */
+ u32 setxa_len; /* request */
+ struct nfsd4_change_info setxa_cinfo; /* response */
+};
+
+struct nfsd4_removexattr {
+ char *rmxa_name; /* request */
+ struct nfsd4_change_info rmxa_cinfo; /* response */
+};
+
+struct nfsd4_listxattrs {
+ u64 lsxa_cookie; /* request */
+ u32 lsxa_maxcount; /* request */
+ char *lsxa_buf; /* unfiltered buffer (reply) */
+ u32 lsxa_len; /* unfiltered len (reply) */
+};
+
+struct nfsd4_open {
+ u32 op_claim_type; /* request */
+ u32 op_fnamelen;
+ char * op_fname; /* request - everything but CLAIM_PREV */
+ u32 op_delegate_type; /* request - CLAIM_PREV only */
+ stateid_t op_delegate_stateid; /* request - response */
+ u32 op_why_no_deleg; /* response - DELEG_NONE_EXT only */
+ u32 op_create; /* request */
+ u32 op_createmode; /* request */
+ int op_umask; /* request */
+ u32 op_bmval[3]; /* request */
+ struct iattr op_iattr; /* UNCHECKED4, GUARDED4, EXCLUSIVE4_1 */
+ nfs4_verifier op_verf __attribute__((aligned(32)));
+ /* EXCLUSIVE4 */
+ clientid_t op_clientid; /* request */
+ struct xdr_netobj op_owner; /* request */
+ u32 op_seqid; /* request */
+ u32 op_share_access; /* request */
+ u32 op_share_deny; /* request */
+ u32 op_deleg_want; /* request */
+ stateid_t op_stateid; /* response */
+ __be32 op_xdr_error; /* see nfsd4_open_omfg() */
+ u32 op_recall; /* recall */
+ struct nfsd4_change_info op_cinfo; /* response */
+ u32 op_rflags; /* response */
+ bool op_truncate; /* used during processing */
+ bool op_created; /* used during processing */
+ struct nfs4_openowner *op_openowner; /* used during processing */
+ struct file *op_filp; /* used during processing */
+ struct nfs4_file *op_file; /* used during processing */
+ struct nfs4_ol_stateid *op_stp; /* used during processing */
+ struct nfs4_clnt_odstate *op_odstate; /* used during processing */
+ struct nfs4_acl *op_acl;
+ struct xdr_netobj op_label;
+ struct svc_rqst *op_rqstp;
+};
+
+struct nfsd4_open_confirm {
+ stateid_t oc_req_stateid /* request */;
+ u32 oc_seqid /* request */;
+ stateid_t oc_resp_stateid /* response */;
+};
+
+struct nfsd4_open_downgrade {
+ stateid_t od_stateid;
+ u32 od_seqid;
+ u32 od_share_access; /* request */
+ u32 od_deleg_want; /* request */
+ u32 od_share_deny; /* request */
+};
+
+
+struct nfsd4_read {
+ stateid_t rd_stateid; /* request */
+ u64 rd_offset; /* request */
+ u32 rd_length; /* request */
+ int rd_vlen;
+ struct nfsd_file *rd_nf;
+
+ struct svc_rqst *rd_rqstp; /* response */
+ struct svc_fh *rd_fhp; /* response */
+ u32 rd_eof; /* response */
+};
+
+struct nfsd4_readdir {
+ u64 rd_cookie; /* request */
+ nfs4_verifier rd_verf; /* request */
+ u32 rd_dircount; /* request */
+ u32 rd_maxcount; /* request */
+ u32 rd_bmval[3]; /* request */
+ struct svc_rqst *rd_rqstp; /* response */
+ struct svc_fh * rd_fhp; /* response */
+
+ struct readdir_cd common;
+ struct xdr_stream *xdr;
+ int cookie_offset;
+};
+
+struct nfsd4_release_lockowner {
+ clientid_t rl_clientid;
+ struct xdr_netobj rl_owner;
+};
+struct nfsd4_readlink {
+ struct svc_rqst *rl_rqstp; /* request */
+ struct svc_fh * rl_fhp; /* request */
+};
+
+struct nfsd4_remove {
+ u32 rm_namelen; /* request */
+ char * rm_name; /* request */
+ struct nfsd4_change_info rm_cinfo; /* response */
+};
+
+struct nfsd4_rename {
+ u32 rn_snamelen; /* request */
+ char * rn_sname; /* request */
+ u32 rn_tnamelen; /* request */
+ char * rn_tname; /* request */
+ struct nfsd4_change_info rn_sinfo; /* response */
+ struct nfsd4_change_info rn_tinfo; /* response */
+};
+
+struct nfsd4_secinfo {
+ u32 si_namelen; /* request */
+ char *si_name; /* request */
+ struct svc_export *si_exp; /* response */
+};
+
+struct nfsd4_secinfo_no_name {
+ u32 sin_style; /* request */
+ struct svc_export *sin_exp; /* response */
+};
+
+struct nfsd4_setattr {
+ stateid_t sa_stateid; /* request */
+ u32 sa_bmval[3]; /* request */
+ struct iattr sa_iattr; /* request */
+ struct nfs4_acl *sa_acl;
+ struct xdr_netobj sa_label;
+};
+
+struct nfsd4_setclientid {
+ nfs4_verifier se_verf; /* request */
+ struct xdr_netobj se_name;
+ u32 se_callback_prog; /* request */
+ u32 se_callback_netid_len; /* request */
+ char * se_callback_netid_val; /* request */
+ u32 se_callback_addr_len; /* request */
+ char * se_callback_addr_val; /* request */
+ u32 se_callback_ident; /* request */
+ clientid_t se_clientid; /* response */
+ nfs4_verifier se_confirm; /* response */
+};
+
+struct nfsd4_setclientid_confirm {
+ clientid_t sc_clientid;
+ nfs4_verifier sc_confirm;
+};
+
+struct nfsd4_test_stateid_id {
+ __be32 ts_id_status;
+ stateid_t ts_id_stateid;
+ struct list_head ts_id_list;
+};
+
+struct nfsd4_test_stateid {
+ u32 ts_num_ids;
+ struct list_head ts_stateid_list;
+};
+
+struct nfsd4_free_stateid {
+ stateid_t fr_stateid; /* request */
+};
+
+/* also used for NVERIFY */
+struct nfsd4_verify {
+ u32 ve_bmval[3]; /* request */
+ u32 ve_attrlen; /* request */
+ char * ve_attrval; /* request */
+};
+
+struct nfsd4_write {
+ stateid_t wr_stateid; /* request */
+ u64 wr_offset; /* request */
+ u32 wr_stable_how; /* request */
+ u32 wr_buflen; /* request */
+ struct xdr_buf wr_payload; /* request */
+
+ u32 wr_bytes_written; /* response */
+ u32 wr_how_written; /* response */
+ nfs4_verifier wr_verifier; /* response */
+};
+
+struct nfsd4_exchange_id {
+ nfs4_verifier verifier;
+ struct xdr_netobj clname;
+ u32 flags;
+ clientid_t clientid;
+ u32 seqid;
+ u32 spa_how;
+ u32 spo_must_enforce[3];
+ u32 spo_must_allow[3];
+ struct xdr_netobj nii_domain;
+ struct xdr_netobj nii_name;
+ struct timespec64 nii_time;
+};
+
+struct nfsd4_sequence {
+ struct nfs4_sessionid sessionid; /* request/response */
+ u32 seqid; /* request/response */
+ u32 slotid; /* request/response */
+ u32 maxslots; /* request/response */
+ u32 cachethis; /* request */
+#if 0
+ u32 target_maxslots; /* response */
+#endif /* not yet */
+ u32 status_flags; /* response */
+};
+
+struct nfsd4_destroy_session {
+ struct nfs4_sessionid sessionid;
+};
+
+struct nfsd4_destroy_clientid {
+ clientid_t clientid;
+};
+
+struct nfsd4_reclaim_complete {
+ u32 rca_one_fs;
+};
+
+struct nfsd4_deviceid {
+ u64 fsid_idx;
+ u32 generation;
+ u32 pad;
+};
+
+struct nfsd4_layout_seg {
+ u32 iomode;
+ u64 offset;
+ u64 length;
+};
+
+struct nfsd4_getdeviceinfo {
+ struct nfsd4_deviceid gd_devid; /* request */
+ u32 gd_layout_type; /* request */
+ u32 gd_maxcount; /* request */
+ u32 gd_notify_types;/* request - response */
+ void *gd_device; /* response */
+};
+
+struct nfsd4_layoutget {
+ u64 lg_minlength; /* request */
+ u32 lg_signal; /* request */
+ u32 lg_layout_type; /* request */
+ u32 lg_maxcount; /* request */
+ stateid_t lg_sid; /* request/response */
+ struct nfsd4_layout_seg lg_seg; /* request/response */
+ void *lg_content; /* response */
+};
+
+struct nfsd4_layoutcommit {
+ stateid_t lc_sid; /* request */
+ struct nfsd4_layout_seg lc_seg; /* request */
+ u32 lc_reclaim; /* request */
+ u32 lc_newoffset; /* request */
+ u64 lc_last_wr; /* request */
+ struct timespec64 lc_mtime; /* request */
+ u32 lc_layout_type; /* request */
+ u32 lc_up_len; /* layout length */
+ void *lc_up_layout; /* decoded by callback */
+ u32 lc_size_chg; /* boolean for response */
+ u64 lc_newsize; /* response */
+};
+
+struct nfsd4_layoutreturn {
+ u32 lr_return_type; /* request */
+ u32 lr_layout_type; /* request */
+ struct nfsd4_layout_seg lr_seg; /* request */
+ u32 lr_reclaim; /* request */
+ u32 lrf_body_len; /* request */
+ void *lrf_body; /* request */
+ stateid_t lr_sid; /* request/response */
+ u32 lrs_present; /* response */
+};
+
+struct nfsd4_fallocate {
+ /* request */
+ stateid_t falloc_stateid;
+ loff_t falloc_offset;
+ u64 falloc_length;
+};
+
+struct nfsd4_clone {
+ /* request */
+ stateid_t cl_src_stateid;
+ stateid_t cl_dst_stateid;
+ u64 cl_src_pos;
+ u64 cl_dst_pos;
+ u64 cl_count;
+};
+
+struct nfsd42_write_res {
+ u64 wr_bytes_written;
+ u32 wr_stable_how;
+ nfs4_verifier wr_verifier;
+ stateid_t cb_stateid;
+};
+
+struct nfsd4_cb_offload {
+ struct nfsd4_callback co_cb;
+ struct nfsd42_write_res co_res;
+ __be32 co_nfserr;
+ struct knfsd_fh co_fh;
+};
+
+struct nfsd4_copy {
+ /* request */
+ stateid_t cp_src_stateid;
+ stateid_t cp_dst_stateid;
+ u64 cp_src_pos;
+ u64 cp_dst_pos;
+ u64 cp_count;
+ struct nl4_server *cp_src;
+
+ unsigned long cp_flags;
+#define NFSD4_COPY_F_STOPPED (0)
+#define NFSD4_COPY_F_INTRA (1)
+#define NFSD4_COPY_F_SYNCHRONOUS (2)
+#define NFSD4_COPY_F_COMMITTED (3)
+
+ /* response */
+ struct nfsd42_write_res cp_res;
+ struct knfsd_fh fh;
+
+ struct nfs4_client *cp_clp;
+
+ struct nfsd_file *nf_src;
+ struct nfsd_file *nf_dst;
+
+ copy_stateid_t cp_stateid;
+
+ struct list_head copies;
+ struct task_struct *copy_task;
+ refcount_t refcount;
+
+ struct nfsd4_ssc_umount_item *ss_nsui;
+ struct nfs_fh c_fh;
+ nfs4_stateid stateid;
+};
+
+static inline void nfsd4_copy_set_sync(struct nfsd4_copy *copy, bool sync)
+{
+ if (sync)
+ set_bit(NFSD4_COPY_F_SYNCHRONOUS, &copy->cp_flags);
+ else
+ clear_bit(NFSD4_COPY_F_SYNCHRONOUS, &copy->cp_flags);
+}
+
+static inline bool nfsd4_copy_is_sync(const struct nfsd4_copy *copy)
+{
+ return test_bit(NFSD4_COPY_F_SYNCHRONOUS, &copy->cp_flags);
+}
+
+static inline bool nfsd4_copy_is_async(const struct nfsd4_copy *copy)
+{
+ return !test_bit(NFSD4_COPY_F_SYNCHRONOUS, &copy->cp_flags);
+}
+
+static inline bool nfsd4_ssc_is_inter(const struct nfsd4_copy *copy)
+{
+ return !test_bit(NFSD4_COPY_F_INTRA, &copy->cp_flags);
+}
+
+struct nfsd4_seek {
+ /* request */
+ stateid_t seek_stateid;
+ loff_t seek_offset;
+ u32 seek_whence;
+
+ /* response */
+ u32 seek_eof;
+ loff_t seek_pos;
+};
+
+struct nfsd4_offload_status {
+ /* request */
+ stateid_t stateid;
+
+ /* response */
+ u64 count;
+ u32 status;
+};
+
+struct nfsd4_copy_notify {
+ /* request */
+ stateid_t cpn_src_stateid;
+ struct nl4_server *cpn_dst;
+
+ /* response */
+ stateid_t cpn_cnr_stateid;
+ u64 cpn_sec;
+ u32 cpn_nsec;
+ struct nl4_server *cpn_src;
+};
+
+struct nfsd4_op {
+ u32 opnum;
+ __be32 status;
+ const struct nfsd4_operation *opdesc;
+ struct nfs4_replay *replay;
+ union nfsd4_op_u {
+ struct nfsd4_access access;
+ struct nfsd4_close close;
+ struct nfsd4_commit commit;
+ struct nfsd4_create create;
+ struct nfsd4_delegreturn delegreturn;
+ struct nfsd4_getattr getattr;
+ struct svc_fh * getfh;
+ struct nfsd4_link link;
+ struct nfsd4_lock lock;
+ struct nfsd4_lockt lockt;
+ struct nfsd4_locku locku;
+ struct nfsd4_lookup lookup;
+ struct nfsd4_verify nverify;
+ struct nfsd4_open open;
+ struct nfsd4_open_confirm open_confirm;
+ struct nfsd4_open_downgrade open_downgrade;
+ struct nfsd4_putfh putfh;
+ struct nfsd4_read read;
+ struct nfsd4_readdir readdir;
+ struct nfsd4_readlink readlink;
+ struct nfsd4_remove remove;
+ struct nfsd4_rename rename;
+ clientid_t renew;
+ struct nfsd4_secinfo secinfo;
+ struct nfsd4_setattr setattr;
+ struct nfsd4_setclientid setclientid;
+ struct nfsd4_setclientid_confirm setclientid_confirm;
+ struct nfsd4_verify verify;
+ struct nfsd4_write write;
+ struct nfsd4_release_lockowner release_lockowner;
+
+ /* NFSv4.1 */
+ struct nfsd4_exchange_id exchange_id;
+ struct nfsd4_backchannel_ctl backchannel_ctl;
+ struct nfsd4_bind_conn_to_session bind_conn_to_session;
+ struct nfsd4_create_session create_session;
+ struct nfsd4_destroy_session destroy_session;
+ struct nfsd4_destroy_clientid destroy_clientid;
+ struct nfsd4_sequence sequence;
+ struct nfsd4_reclaim_complete reclaim_complete;
+ struct nfsd4_test_stateid test_stateid;
+ struct nfsd4_free_stateid free_stateid;
+ struct nfsd4_getdeviceinfo getdeviceinfo;
+ struct nfsd4_layoutget layoutget;
+ struct nfsd4_layoutcommit layoutcommit;
+ struct nfsd4_layoutreturn layoutreturn;
+ struct nfsd4_secinfo_no_name secinfo_no_name;
+
+ /* NFSv4.2 */
+ struct nfsd4_fallocate allocate;
+ struct nfsd4_fallocate deallocate;
+ struct nfsd4_clone clone;
+ struct nfsd4_copy copy;
+ struct nfsd4_offload_status offload_status;
+ struct nfsd4_copy_notify copy_notify;
+ struct nfsd4_seek seek;
+
+ struct nfsd4_getxattr getxattr;
+ struct nfsd4_setxattr setxattr;
+ struct nfsd4_listxattrs listxattrs;
+ struct nfsd4_removexattr removexattr;
+ } u;
+};
+
+bool nfsd4_cache_this_op(struct nfsd4_op *);
+
+/*
+ * Memory needed just for the duration of processing one compound:
+ */
+struct svcxdr_tmpbuf {
+ struct svcxdr_tmpbuf *next;
+ char buf[];
+};
+
+struct nfsd4_compoundargs {
+ /* scratch variables for XDR decode */
+ struct xdr_stream *xdr;
+ struct svcxdr_tmpbuf *to_free;
+ struct svc_rqst *rqstp;
+
+ char * tag;
+ u32 taglen;
+ u32 minorversion;
+ u32 client_opcnt;
+ u32 opcnt;
+ struct nfsd4_op *ops;
+ struct nfsd4_op iops[8];
+};
+
+struct nfsd4_compoundres {
+ /* scratch variables for XDR encode */
+ struct xdr_stream *xdr;
+ struct svc_rqst * rqstp;
+
+ __be32 *statusp;
+ char * tag;
+ u32 taglen;
+ u32 opcnt;
+
+ struct nfsd4_compound_state cstate;
+};
+
+static inline bool nfsd4_is_solo_sequence(struct nfsd4_compoundres *resp)
+{
+ struct nfsd4_compoundargs *args = resp->rqstp->rq_argp;
+ return resp->opcnt == 1 && args->ops[0].opnum == OP_SEQUENCE;
+}
+
+/*
+ * The session reply cache only needs to cache replies that the client
+ * actually asked us to. But it's almost free for us to cache compounds
+ * consisting of only a SEQUENCE op, so we may as well cache those too.
+ * Also, the protocol doesn't give us a convenient response in the case
+ * of a replay of a solo SEQUENCE op that wasn't cached
+ * (RETRY_UNCACHED_REP can only be returned in the second op of a
+ * compound).
+ */
+static inline bool nfsd4_cache_this(struct nfsd4_compoundres *resp)
+{
+ return (resp->cstate.slot->sl_flags & NFSD4_SLOT_CACHETHIS)
+ || nfsd4_is_solo_sequence(resp);
+}
+
+static inline bool nfsd4_last_compound_op(struct svc_rqst *rqstp)
+{
+ struct nfsd4_compoundres *resp = rqstp->rq_resp;
+ struct nfsd4_compoundargs *argp = rqstp->rq_argp;
+
+ return argp->opcnt == resp->opcnt;
+}
+
+const struct nfsd4_operation *OPDESC(struct nfsd4_op *op);
+int nfsd4_max_reply(struct svc_rqst *rqstp, struct nfsd4_op *op);
+void warn_on_nonidempotent_op(struct nfsd4_op *op);
+
+#define NFS4_SVC_XDRSIZE sizeof(struct nfsd4_compoundargs)
+
+bool nfsd4_mach_creds_match(struct nfs4_client *cl, struct svc_rqst *rqstp);
+bool nfs4svc_decode_compoundargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
+bool nfs4svc_encode_compoundres(struct svc_rqst *rqstp, struct xdr_stream *xdr);
+__be32 nfsd4_check_resp_size(struct nfsd4_compoundres *, u32);
+void nfsd4_encode_operation(struct nfsd4_compoundres *, struct nfsd4_op *);
+void nfsd4_encode_replay(struct xdr_stream *xdr, struct nfsd4_op *op);
+__be32 nfsd4_encode_fattr_to_buf(__be32 **p, int words,
+ struct svc_fh *fhp, struct svc_export *exp,
+ struct dentry *dentry,
+ u32 *bmval, struct svc_rqst *, int ignore_crossmnt);
+extern __be32 nfsd4_setclientid(struct svc_rqst *rqstp,
+ struct nfsd4_compound_state *, union nfsd4_op_u *u);
+extern __be32 nfsd4_setclientid_confirm(struct svc_rqst *rqstp,
+ struct nfsd4_compound_state *, union nfsd4_op_u *u);
+extern __be32 nfsd4_exchange_id(struct svc_rqst *rqstp,
+ struct nfsd4_compound_state *, union nfsd4_op_u *u);
+extern __be32 nfsd4_backchannel_ctl(struct svc_rqst *,
+ struct nfsd4_compound_state *, union nfsd4_op_u *u);
+extern __be32 nfsd4_bind_conn_to_session(struct svc_rqst *,
+ struct nfsd4_compound_state *, union nfsd4_op_u *u);
+extern __be32 nfsd4_create_session(struct svc_rqst *,
+ struct nfsd4_compound_state *, union nfsd4_op_u *u);
+extern __be32 nfsd4_sequence(struct svc_rqst *,
+ struct nfsd4_compound_state *, union nfsd4_op_u *u);
+extern void nfsd4_sequence_done(struct nfsd4_compoundres *resp);
+extern __be32 nfsd4_destroy_session(struct svc_rqst *,
+ struct nfsd4_compound_state *, union nfsd4_op_u *u);
+extern __be32 nfsd4_destroy_clientid(struct svc_rqst *, struct nfsd4_compound_state *,
+ union nfsd4_op_u *u);
+__be32 nfsd4_reclaim_complete(struct svc_rqst *, struct nfsd4_compound_state *,
+ union nfsd4_op_u *u);
+extern __be32 nfsd4_process_open1(struct nfsd4_compound_state *,
+ struct nfsd4_open *open, struct nfsd_net *nn);
+extern __be32 nfsd4_process_open2(struct svc_rqst *rqstp,
+ struct svc_fh *current_fh, struct nfsd4_open *open);
+extern void nfsd4_cstate_clear_replay(struct nfsd4_compound_state *cstate);
+extern void nfsd4_cleanup_open_state(struct nfsd4_compound_state *cstate,
+ struct nfsd4_open *open);
+extern __be32 nfsd4_open_confirm(struct svc_rqst *rqstp,
+ struct nfsd4_compound_state *, union nfsd4_op_u *u);
+extern __be32 nfsd4_close(struct svc_rqst *rqstp, struct nfsd4_compound_state *,
+ union nfsd4_op_u *u);
+extern __be32 nfsd4_open_downgrade(struct svc_rqst *rqstp,
+ struct nfsd4_compound_state *, union nfsd4_op_u *u);
+extern __be32 nfsd4_lock(struct svc_rqst *rqstp, struct nfsd4_compound_state *,
+ union nfsd4_op_u *u);
+extern __be32 nfsd4_lockt(struct svc_rqst *rqstp, struct nfsd4_compound_state *,
+ union nfsd4_op_u *u);
+extern __be32 nfsd4_locku(struct svc_rqst *rqstp, struct nfsd4_compound_state *,
+ union nfsd4_op_u *u);
+extern __be32
+nfsd4_release_lockowner(struct svc_rqst *rqstp,
+ struct nfsd4_compound_state *, union nfsd4_op_u *u);
+extern void nfsd4_release_compoundargs(struct svc_rqst *rqstp);
+extern __be32 nfsd4_delegreturn(struct svc_rqst *rqstp,
+ struct nfsd4_compound_state *, union nfsd4_op_u *u);
+extern __be32 nfsd4_renew(struct svc_rqst *rqstp, struct nfsd4_compound_state *,
+ union nfsd4_op_u *u);
+extern __be32 nfsd4_test_stateid(struct svc_rqst *rqstp,
+ struct nfsd4_compound_state *, union nfsd4_op_u *);
+extern __be32 nfsd4_free_stateid(struct svc_rqst *rqstp,
+ struct nfsd4_compound_state *, union nfsd4_op_u *);
+extern void nfsd4_bump_seqid(struct nfsd4_compound_state *, __be32 nfserr);
+
+enum nfsd4_op_flags {
+ ALLOWED_WITHOUT_FH = 1 << 0, /* No current filehandle required */
+ ALLOWED_ON_ABSENT_FS = 1 << 1, /* ops processed on absent fs */
+ ALLOWED_AS_FIRST_OP = 1 << 2, /* ops reqired first in compound */
+ /* For rfc 5661 section 2.6.3.1.1: */
+ OP_HANDLES_WRONGSEC = 1 << 3,
+ OP_IS_PUTFH_LIKE = 1 << 4,
+ /*
+ * These are the ops whose result size we estimate before
+ * encoding, to avoid performing an op then not being able to
+ * respond or cache a response. This includes writes and setattrs
+ * as well as the operations usually called "nonidempotent":
+ */
+ OP_MODIFIES_SOMETHING = 1 << 5,
+ /*
+ * Cache compounds containing these ops in the xid-based drc:
+ * We use the DRC for compounds containing non-idempotent
+ * operations, *except* those that are 4.1-specific (since
+ * sessions provide their own EOS), and except for stateful
+ * operations other than setclientid and setclientid_confirm
+ * (since sequence numbers provide EOS for open, lock, etc in
+ * the v4.0 case).
+ */
+ OP_CACHEME = 1 << 6,
+ /*
+ * These are ops which clear current state id.
+ */
+ OP_CLEAR_STATEID = 1 << 7,
+ /* Most ops return only an error on failure; some may do more: */
+ OP_NONTRIVIAL_ERROR_ENCODE = 1 << 8,
+};
+
+struct nfsd4_operation {
+ __be32 (*op_func)(struct svc_rqst *, struct nfsd4_compound_state *,
+ union nfsd4_op_u *);
+ void (*op_release)(union nfsd4_op_u *);
+ u32 op_flags;
+ char *op_name;
+ /* Try to get response size before operation */
+ u32 (*op_rsize_bop)(const struct svc_rqst *rqstp,
+ const struct nfsd4_op *op);
+ void (*op_get_currentstateid)(struct nfsd4_compound_state *,
+ union nfsd4_op_u *);
+ void (*op_set_currentstateid)(struct nfsd4_compound_state *,
+ union nfsd4_op_u *);
+};
+
+struct nfsd4_cb_recall_any {
+ struct nfsd4_callback ra_cb;
+ u32 ra_keep;
+ u32 ra_bmval[1];
+};
+
+#endif
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-14 21:52:44 +0000