diff options
Diffstat (limited to 'ANDROID_3.4.5/fs/nfsd/nfs4proc.c')
| -rw-r--r-- | ANDROID_3.4.5/fs/nfsd/nfs4proc.c | 1769 |
1 files changed, 0 insertions, 1769 deletions
diff --git a/ANDROID_3.4.5/fs/nfsd/nfs4proc.c b/ANDROID_3.4.5/fs/nfsd/nfs4proc.c deleted file mode 100644 index 987e719f..00000000 --- a/ANDROID_3.4.5/fs/nfsd/nfs4proc.c +++ /dev/null @@ -1,1769 +0,0 @@ -/* - * Server-side procedures 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. - */ -#include <linux/file.h> -#include <linux/slab.h> - -#include "idmap.h" -#include "cache.h" -#include "xdr4.h" -#include "vfs.h" -#include "current_stateid.h" - -#define NFSDDBG_FACILITY NFSDDBG_PROC - -static u32 nfsd_attrmask[] = { - NFSD_WRITEABLE_ATTRS_WORD0, - NFSD_WRITEABLE_ATTRS_WORD1, - NFSD_WRITEABLE_ATTRS_WORD2 -}; - -static u32 nfsd41_ex_attrmask[] = { - NFSD_SUPPATTR_EXCLCREAT_WORD0, - NFSD_SUPPATTR_EXCLCREAT_WORD1, - NFSD_SUPPATTR_EXCLCREAT_WORD2 -}; - -static __be32 -check_attr_support(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, - u32 *bmval, u32 *writable) -{ - struct dentry *dentry = cstate->current_fh.fh_dentry; - - /* - * Check about attributes are supported by the NFSv4 server or not. - * According to spec, unsupported attributes return ERR_ATTRNOTSUPP. - */ - if ((bmval[0] & ~nfsd_suppattrs0(cstate->minorversion)) || - (bmval[1] & ~nfsd_suppattrs1(cstate->minorversion)) || - (bmval[2] & ~nfsd_suppattrs2(cstate->minorversion))) - return nfserr_attrnotsupp; - - /* - * Check FATTR4_WORD0_ACL can be supported - * in current environment or not. - */ - if (bmval[0] & FATTR4_WORD0_ACL) { - if (!IS_POSIXACL(dentry->d_inode)) - return nfserr_attrnotsupp; - } - - /* - * According to spec, read-only attributes return ERR_INVAL. - */ - if (writable) { - if ((bmval[0] & ~writable[0]) || (bmval[1] & ~writable[1]) || - (bmval[2] & ~writable[2])) - return nfserr_inval; - } - - return nfs_ok; -} - -static __be32 -nfsd4_check_open_attributes(struct svc_rqst *rqstp, - struct nfsd4_compound_state *cstate, struct nfsd4_open *open) -{ - __be32 status = nfs_ok; - - if (open->op_create == NFS4_OPEN_CREATE) { - if (open->op_createmode == NFS4_CREATE_UNCHECKED - || open->op_createmode == NFS4_CREATE_GUARDED) - status = check_attr_support(rqstp, cstate, - open->op_bmval, nfsd_attrmask); - else if (open->op_createmode == NFS4_CREATE_EXCLUSIVE4_1) - status = check_attr_support(rqstp, cstate, - open->op_bmval, nfsd41_ex_attrmask); - } - - return status; -} - -static int -is_create_with_attrs(struct nfsd4_open *open) -{ - return open->op_create == NFS4_OPEN_CREATE - && (open->op_createmode == NFS4_CREATE_UNCHECKED - || open->op_createmode == NFS4_CREATE_GUARDED - || open->op_createmode == NFS4_CREATE_EXCLUSIVE4_1); -} - -/* - * if error occurs when setting the acl, just clear the acl bit - * in the returned attr bitmap. - */ -static void -do_set_nfs4_acl(struct svc_rqst *rqstp, struct svc_fh *fhp, - struct nfs4_acl *acl, u32 *bmval) -{ - __be32 status; - - status = nfsd4_set_nfs4_acl(rqstp, fhp, acl); - if (status) - /* - * We should probably fail the whole open at this point, - * but we've already created the file, so it's too late; - * So this seems the least of evils: - */ - bmval[0] &= ~FATTR4_WORD0_ACL; -} - -static inline void -fh_dup2(struct svc_fh *dst, struct svc_fh *src) -{ - fh_put(dst); - dget(src->fh_dentry); - if (src->fh_export) - cache_get(&src->fh_export->h); - *dst = *src; -} - -static __be32 -do_open_permission(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_open *open, int accmode) -{ - __be32 status; - - if (open->op_truncate && - !(open->op_share_access & NFS4_SHARE_ACCESS_WRITE)) - return nfserr_inval; - - accmode |= NFSD_MAY_READ_IF_EXEC; - - if (open->op_share_access & NFS4_SHARE_ACCESS_READ) - accmode |= NFSD_MAY_READ; - if (open->op_share_access & NFS4_SHARE_ACCESS_WRITE) - accmode |= (NFSD_MAY_WRITE | NFSD_MAY_TRUNC); - if (open->op_share_deny & NFS4_SHARE_DENY_READ) - accmode |= NFSD_MAY_WRITE; - - status = fh_verify(rqstp, current_fh, S_IFREG, accmode); - - return status; -} - -static __be32 nfsd_check_obj_isreg(struct svc_fh *fh) -{ - umode_t mode = fh->fh_dentry->d_inode->i_mode; - - if (S_ISREG(mode)) - return nfs_ok; - if (S_ISDIR(mode)) - return nfserr_isdir; - /* - * Using err_symlink as our catch-all case may look odd; but - * there's no other obvious error for this case in 4.0, and we - * happen to know that it will cause the linux v4 client to do - * the right thing on attempts to open something other than a - * regular file. - */ - return nfserr_symlink; -} - -static __be32 -do_open_lookup(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_open *open) -{ - struct svc_fh *resfh; - __be32 status; - - resfh = kmalloc(sizeof(struct svc_fh), GFP_KERNEL); - if (!resfh) - return nfserr_jukebox; - fh_init(resfh, NFS4_FHSIZE); - open->op_truncate = 0; - - if (open->op_create) { - /* FIXME: check session persistence and pnfs flags. - * The nfsv4.1 spec requires the following semantics: - * - * Persistent | pNFS | Server REQUIRED | Client Allowed - * Reply Cache | server | | - * -------------+--------+-----------------+-------------------- - * no | no | EXCLUSIVE4_1 | EXCLUSIVE4_1 - * | | | (SHOULD) - * | | and EXCLUSIVE4 | or EXCLUSIVE4 - * | | | (SHOULD NOT) - * no | yes | EXCLUSIVE4_1 | EXCLUSIVE4_1 - * yes | no | GUARDED4 | GUARDED4 - * yes | yes | GUARDED4 | GUARDED4 - */ - - /* - * Note: create modes (UNCHECKED,GUARDED...) are the same - * in NFSv4 as in v3 except EXCLUSIVE4_1. - */ - status = do_nfsd_create(rqstp, current_fh, open->op_fname.data, - open->op_fname.len, &open->op_iattr, - resfh, open->op_createmode, - (u32 *)open->op_verf.data, - &open->op_truncate, &open->op_created); - - /* - * Following rfc 3530 14.2.16, use the returned bitmask - * to indicate which attributes we used to store the - * verifier: - */ - if (open->op_createmode == NFS4_CREATE_EXCLUSIVE && status == 0) - open->op_bmval[1] = (FATTR4_WORD1_TIME_ACCESS | - FATTR4_WORD1_TIME_MODIFY); - } else { - status = nfsd_lookup(rqstp, current_fh, - open->op_fname.data, open->op_fname.len, resfh); - fh_unlock(current_fh); - } - if (status) - goto out; - status = nfsd_check_obj_isreg(resfh); - if (status) - goto out; - - if (is_create_with_attrs(open) && open->op_acl != NULL) - do_set_nfs4_acl(rqstp, resfh, open->op_acl, open->op_bmval); - - /* set reply cache */ - fh_copy_shallow(&open->op_openowner->oo_owner.so_replay.rp_openfh, - &resfh->fh_handle); - if (!open->op_created) - status = do_open_permission(rqstp, resfh, open, - NFSD_MAY_NOP); - set_change_info(&open->op_cinfo, current_fh); - fh_dup2(current_fh, resfh); -out: - fh_put(resfh); - kfree(resfh); - return status; -} - -static __be32 -do_open_fhandle(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_open *open) -{ - __be32 status; - - /* We don't know the target directory, and therefore can not - * set the change info - */ - - memset(&open->op_cinfo, 0, sizeof(struct nfsd4_change_info)); - - /* set replay cache */ - fh_copy_shallow(&open->op_openowner->oo_owner.so_replay.rp_openfh, - ¤t_fh->fh_handle); - - open->op_truncate = (open->op_iattr.ia_valid & ATTR_SIZE) && - (open->op_iattr.ia_size == 0); - - status = do_open_permission(rqstp, current_fh, open, - NFSD_MAY_OWNER_OVERRIDE); - - return status; -} - -static void -copy_clientid(clientid_t *clid, struct nfsd4_session *session) -{ - struct nfsd4_sessionid *sid = - (struct nfsd4_sessionid *)session->se_sessionid.data; - - clid->cl_boot = sid->clientid.cl_boot; - clid->cl_id = sid->clientid.cl_id; -} - -static __be32 -nfsd4_open(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, - struct nfsd4_open *open) -{ - __be32 status; - struct nfsd4_compoundres *resp; - - dprintk("NFSD: nfsd4_open filename %.*s op_openowner %p\n", - (int)open->op_fname.len, open->op_fname.data, - open->op_openowner); - - /* This check required by spec. */ - if (open->op_create && open->op_claim_type != NFS4_OPEN_CLAIM_NULL) - return nfserr_inval; - - open->op_created = 0; - /* - * RFC5661 18.51.3 - * Before RECLAIM_COMPLETE done, server should deny new lock - */ - if (nfsd4_has_session(cstate) && - !test_bit(NFSD4_CLIENT_RECLAIM_COMPLETE, - &cstate->session->se_client->cl_flags) && - open->op_claim_type != NFS4_OPEN_CLAIM_PREVIOUS) - return nfserr_grace; - - if (nfsd4_has_session(cstate)) - copy_clientid(&open->op_clientid, cstate->session); - - nfs4_lock_state(); - - /* check seqid for replay. set nfs4_owner */ - resp = rqstp->rq_resp; - status = nfsd4_process_open1(&resp->cstate, open); - if (status == nfserr_replay_me) { - struct nfs4_replay *rp = &open->op_openowner->oo_owner.so_replay; - fh_put(&cstate->current_fh); - fh_copy_shallow(&cstate->current_fh.fh_handle, - &rp->rp_openfh); - status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP); - if (status) - dprintk("nfsd4_open: replay failed" - " restoring previous filehandle\n"); - else - status = nfserr_replay_me; - } - if (status) - goto out; - - status = nfsd4_check_open_attributes(rqstp, cstate, open); - if (status) - goto out; - - /* Openowner is now set, so sequence id will get bumped. Now we need - * these checks before we do any creates: */ - status = nfserr_grace; - if (locks_in_grace() && open->op_claim_type != NFS4_OPEN_CLAIM_PREVIOUS) - goto out; - status = nfserr_no_grace; - if (!locks_in_grace() && open->op_claim_type == NFS4_OPEN_CLAIM_PREVIOUS) - goto out; - - switch (open->op_claim_type) { - case NFS4_OPEN_CLAIM_DELEGATE_CUR: - case NFS4_OPEN_CLAIM_NULL: - status = do_open_lookup(rqstp, &cstate->current_fh, - open); - if (status) - goto out; - break; - case NFS4_OPEN_CLAIM_PREVIOUS: - open->op_openowner->oo_flags |= NFS4_OO_CONFIRMED; - status = nfs4_check_open_reclaim(&open->op_clientid); - if (status) - goto out; - case NFS4_OPEN_CLAIM_FH: - case NFS4_OPEN_CLAIM_DELEG_CUR_FH: - status = do_open_fhandle(rqstp, &cstate->current_fh, - open); - if (status) - goto out; - break; - case NFS4_OPEN_CLAIM_DELEG_PREV_FH: - case NFS4_OPEN_CLAIM_DELEGATE_PREV: - open->op_openowner->oo_flags |= NFS4_OO_CONFIRMED; - dprintk("NFSD: unsupported OPEN claim type %d\n", - open->op_claim_type); - status = nfserr_notsupp; - goto out; - default: - dprintk("NFSD: Invalid OPEN claim type %d\n", - open->op_claim_type); - status = nfserr_inval; - goto out; - } - /* - * nfsd4_process_open2() does the actual opening of the file. If - * successful, it (1) truncates the file if open->op_truncate was - * set, (2) sets open->op_stateid, (3) sets open->op_delegation. - */ - status = nfsd4_process_open2(rqstp, &cstate->current_fh, open); - WARN_ON(status && open->op_created); -out: - nfsd4_cleanup_open_state(open, status); - if (open->op_openowner) - cstate->replay_owner = &open->op_openowner->oo_owner; - else - nfs4_unlock_state(); - return status; -} - -/* - * filehandle-manipulating ops. - */ -static __be32 -nfsd4_getfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, - struct svc_fh **getfh) -{ - if (!cstate->current_fh.fh_dentry) - return nfserr_nofilehandle; - - *getfh = &cstate->current_fh; - return nfs_ok; -} - -static __be32 -nfsd4_putfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, - struct nfsd4_putfh *putfh) -{ - fh_put(&cstate->current_fh); - cstate->current_fh.fh_handle.fh_size = putfh->pf_fhlen; - memcpy(&cstate->current_fh.fh_handle.fh_base, putfh->pf_fhval, - putfh->pf_fhlen); - return fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_BYPASS_GSS); -} - -static __be32 -nfsd4_putrootfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, - void *arg) -{ - __be32 status; - - fh_put(&cstate->current_fh); - status = exp_pseudoroot(rqstp, &cstate->current_fh); - return status; -} - -static __be32 -nfsd4_restorefh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, - void *arg) -{ - if (!cstate->save_fh.fh_dentry) - return nfserr_restorefh; - - fh_dup2(&cstate->current_fh, &cstate->save_fh); - if (HAS_STATE_ID(cstate, SAVED_STATE_ID_FLAG)) { - memcpy(&cstate->current_stateid, &cstate->save_stateid, sizeof(stateid_t)); - SET_STATE_ID(cstate, CURRENT_STATE_ID_FLAG); - } - return nfs_ok; -} - -static __be32 -nfsd4_savefh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, - void *arg) -{ - if (!cstate->current_fh.fh_dentry) - return nfserr_nofilehandle; - - fh_dup2(&cstate->save_fh, &cstate->current_fh); - if (HAS_STATE_ID(cstate, CURRENT_STATE_ID_FLAG)) { - memcpy(&cstate->save_stateid, &cstate->current_stateid, sizeof(stateid_t)); - SET_STATE_ID(cstate, SAVED_STATE_ID_FLAG); - } - return nfs_ok; -} - -/* - * misc nfsv4 ops - */ -static __be32 -nfsd4_access(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, - struct nfsd4_access *access) -{ - if (access->ac_req_access & ~NFS3_ACCESS_FULL) - return nfserr_inval; - - access->ac_resp_access = access->ac_req_access; - return nfsd_access(rqstp, &cstate->current_fh, &access->ac_resp_access, - &access->ac_supported); -} - -static void gen_boot_verifier(nfs4_verifier *verifier) -{ - __be32 verf[2]; - - verf[0] = (__be32)nfssvc_boot.tv_sec; - verf[1] = (__be32)nfssvc_boot.tv_usec; - memcpy(verifier->data, verf, sizeof(verifier->data)); -} - -static __be32 -nfsd4_commit(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, - struct nfsd4_commit *commit) -{ - gen_boot_verifier(&commit->co_verf); - return nfsd_commit(rqstp, &cstate->current_fh, commit->co_offset, - commit->co_count); -} - -static __be32 -nfsd4_create(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, - struct nfsd4_create *create) -{ - struct svc_fh resfh; - __be32 status; - dev_t rdev; - - fh_init(&resfh, NFS4_FHSIZE); - - status = fh_verify(rqstp, &cstate->current_fh, S_IFDIR, - NFSD_MAY_CREATE); - if (status) - return status; - - status = check_attr_support(rqstp, cstate, create->cr_bmval, - nfsd_attrmask); - if (status) - return status; - - switch (create->cr_type) { - case NF4LNK: - /* ugh! we have to null-terminate the linktext, or - * vfs_symlink() will choke. it is always safe to - * null-terminate by brute force, since at worst we - * will overwrite the first byte of the create namelen - * in the XDR buffer, which has already been extracted - * during XDR decode. - */ - create->cr_linkname[create->cr_linklen] = 0; - - status = nfsd_symlink(rqstp, &cstate->current_fh, - create->cr_name, create->cr_namelen, - create->cr_linkname, create->cr_linklen, - &resfh, &create->cr_iattr); - break; - - case NF4BLK: - rdev = MKDEV(create->cr_specdata1, create->cr_specdata2); - if (MAJOR(rdev) != create->cr_specdata1 || - MINOR(rdev) != create->cr_specdata2) - return nfserr_inval; - status = nfsd_create(rqstp, &cstate->current_fh, - create->cr_name, create->cr_namelen, - &create->cr_iattr, S_IFBLK, rdev, &resfh); - break; - - case NF4CHR: - rdev = MKDEV(create->cr_specdata1, create->cr_specdata2); - if (MAJOR(rdev) != create->cr_specdata1 || - MINOR(rdev) != create->cr_specdata2) - return nfserr_inval; - status = nfsd_create(rqstp, &cstate->current_fh, - create->cr_name, create->cr_namelen, - &create->cr_iattr,S_IFCHR, rdev, &resfh); - break; - - case NF4SOCK: - status = nfsd_create(rqstp, &cstate->current_fh, - create->cr_name, create->cr_namelen, - &create->cr_iattr, S_IFSOCK, 0, &resfh); - break; - - case NF4FIFO: - status = nfsd_create(rqstp, &cstate->current_fh, - create->cr_name, create->cr_namelen, - &create->cr_iattr, S_IFIFO, 0, &resfh); - break; - - case NF4DIR: - create->cr_iattr.ia_valid &= ~ATTR_SIZE; - status = nfsd_create(rqstp, &cstate->current_fh, - create->cr_name, create->cr_namelen, - &create->cr_iattr, S_IFDIR, 0, &resfh); - break; - - default: - status = nfserr_badtype; - } - - if (status) - goto out; - - if (create->cr_acl != NULL) - do_set_nfs4_acl(rqstp, &resfh, create->cr_acl, - create->cr_bmval); - - fh_unlock(&cstate->current_fh); - set_change_info(&create->cr_cinfo, &cstate->current_fh); - fh_dup2(&cstate->current_fh, &resfh); -out: - fh_put(&resfh); - return status; -} - -static __be32 -nfsd4_getattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, - struct nfsd4_getattr *getattr) -{ - __be32 status; - - status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP); - if (status) - return status; - - if (getattr->ga_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1) - return nfserr_inval; - - getattr->ga_bmval[0] &= nfsd_suppattrs0(cstate->minorversion); - getattr->ga_bmval[1] &= nfsd_suppattrs1(cstate->minorversion); - getattr->ga_bmval[2] &= nfsd_suppattrs2(cstate->minorversion); - - getattr->ga_fhp = &cstate->current_fh; - return nfs_ok; -} - -static __be32 -nfsd4_link(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, - struct nfsd4_link *link) -{ - __be32 status = nfserr_nofilehandle; - - if (!cstate->save_fh.fh_dentry) - return status; - status = nfsd_link(rqstp, &cstate->current_fh, - link->li_name, link->li_namelen, &cstate->save_fh); - if (!status) - set_change_info(&link->li_cinfo, &cstate->current_fh); - return status; -} - -static __be32 nfsd4_do_lookupp(struct svc_rqst *rqstp, struct svc_fh *fh) -{ - struct svc_fh tmp_fh; - __be32 ret; - - fh_init(&tmp_fh, NFS4_FHSIZE); - ret = exp_pseudoroot(rqstp, &tmp_fh); - if (ret) - return ret; - if (tmp_fh.fh_dentry == fh->fh_dentry) { - fh_put(&tmp_fh); - return nfserr_noent; - } - fh_put(&tmp_fh); - return nfsd_lookup(rqstp, fh, "..", 2, fh); -} - -static __be32 -nfsd4_lookupp(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, - void *arg) -{ - return nfsd4_do_lookupp(rqstp, &cstate->current_fh); -} - -static __be32 -nfsd4_lookup(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, - struct nfsd4_lookup *lookup) -{ - return nfsd_lookup(rqstp, &cstate->current_fh, - lookup->lo_name, lookup->lo_len, - &cstate->current_fh); -} - -static __be32 -nfsd4_read(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, - struct nfsd4_read *read) -{ - __be32 status; - - /* no need to check permission - this will be done in nfsd_read() */ - - read->rd_filp = NULL; - if (read->rd_offset >= OFFSET_MAX) - return nfserr_inval; - - nfs4_lock_state(); - /* check stateid */ - if ((status = nfs4_preprocess_stateid_op(cstate, &read->rd_stateid, - RD_STATE, &read->rd_filp))) { - dprintk("NFSD: nfsd4_read: couldn't process stateid!\n"); - goto out; - } - if (read->rd_filp) - get_file(read->rd_filp); - status = nfs_ok; -out: - nfs4_unlock_state(); - read->rd_rqstp = rqstp; - read->rd_fhp = &cstate->current_fh; - return status; -} - -static __be32 -nfsd4_readdir(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, - struct nfsd4_readdir *readdir) -{ - u64 cookie = readdir->rd_cookie; - static const nfs4_verifier zeroverf; - - /* no need to check permission - this will be done in nfsd_readdir() */ - - if (readdir->rd_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1) - return nfserr_inval; - - readdir->rd_bmval[0] &= nfsd_suppattrs0(cstate->minorversion); - readdir->rd_bmval[1] &= nfsd_suppattrs1(cstate->minorversion); - readdir->rd_bmval[2] &= nfsd_suppattrs2(cstate->minorversion); - - if ((cookie == 1) || (cookie == 2) || - (cookie == 0 && memcmp(readdir->rd_verf.data, zeroverf.data, NFS4_VERIFIER_SIZE))) - return nfserr_bad_cookie; - - readdir->rd_rqstp = rqstp; - readdir->rd_fhp = &cstate->current_fh; - return nfs_ok; -} - -static __be32 -nfsd4_readlink(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, - struct nfsd4_readlink *readlink) -{ - readlink->rl_rqstp = rqstp; - readlink->rl_fhp = &cstate->current_fh; - return nfs_ok; -} - -static __be32 -nfsd4_remove(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, - struct nfsd4_remove *remove) -{ - __be32 status; - - if (locks_in_grace()) - return nfserr_grace; - status = nfsd_unlink(rqstp, &cstate->current_fh, 0, - remove->rm_name, remove->rm_namelen); - if (!status) { - fh_unlock(&cstate->current_fh); - set_change_info(&remove->rm_cinfo, &cstate->current_fh); - } - return status; -} - -static __be32 -nfsd4_rename(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, - struct nfsd4_rename *rename) -{ - __be32 status = nfserr_nofilehandle; - - if (!cstate->save_fh.fh_dentry) - return status; - if (locks_in_grace() && !(cstate->save_fh.fh_export->ex_flags - & NFSEXP_NOSUBTREECHECK)) - return nfserr_grace; - status = nfsd_rename(rqstp, &cstate->save_fh, rename->rn_sname, - rename->rn_snamelen, &cstate->current_fh, - rename->rn_tname, rename->rn_tnamelen); - - /* the underlying filesystem returns different error's than required - * by NFSv4. both save_fh and current_fh have been verified.. */ - if (status == nfserr_isdir) - status = nfserr_exist; - else if ((status == nfserr_notdir) && - (S_ISDIR(cstate->save_fh.fh_dentry->d_inode->i_mode) && - S_ISDIR(cstate->current_fh.fh_dentry->d_inode->i_mode))) - status = nfserr_exist; - - if (!status) { - set_change_info(&rename->rn_sinfo, &cstate->current_fh); - set_change_info(&rename->rn_tinfo, &cstate->save_fh); - } - return status; -} - -static __be32 -nfsd4_secinfo(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, - struct nfsd4_secinfo *secinfo) -{ - struct svc_fh resfh; - struct svc_export *exp; - struct dentry *dentry; - __be32 err; - - fh_init(&resfh, NFS4_FHSIZE); - err = fh_verify(rqstp, &cstate->current_fh, S_IFDIR, NFSD_MAY_EXEC); - if (err) - return err; - err = nfsd_lookup_dentry(rqstp, &cstate->current_fh, - secinfo->si_name, secinfo->si_namelen, - &exp, &dentry); - if (err) - return err; - if (dentry->d_inode == NULL) { - exp_put(exp); - err = nfserr_noent; - } else - secinfo->si_exp = exp; - dput(dentry); - if (cstate->minorversion) - /* See rfc 5661 section 2.6.3.1.1.8 */ - fh_put(&cstate->current_fh); - return err; -} - -static __be32 -nfsd4_secinfo_no_name(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, - struct nfsd4_secinfo_no_name *sin) -{ - __be32 err; - - switch (sin->sin_style) { - case NFS4_SECINFO_STYLE4_CURRENT_FH: - break; - case NFS4_SECINFO_STYLE4_PARENT: - err = nfsd4_do_lookupp(rqstp, &cstate->current_fh); - if (err) - return err; - break; - default: - return nfserr_inval; - } - exp_get(cstate->current_fh.fh_export); - sin->sin_exp = cstate->current_fh.fh_export; - fh_put(&cstate->current_fh); - return nfs_ok; -} - -static __be32 -nfsd4_setattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, - struct nfsd4_setattr *setattr) -{ - __be32 status = nfs_ok; - int err; - - if (setattr->sa_iattr.ia_valid & ATTR_SIZE) { - nfs4_lock_state(); - status = nfs4_preprocess_stateid_op(cstate, - &setattr->sa_stateid, WR_STATE, NULL); - nfs4_unlock_state(); - if (status) { - dprintk("NFSD: nfsd4_setattr: couldn't process stateid!\n"); - return status; - } - } - err = fh_want_write(&cstate->current_fh); - if (err) - return nfserrno(err); - status = nfs_ok; - - status = check_attr_support(rqstp, cstate, setattr->sa_bmval, - nfsd_attrmask); - if (status) - goto out; - - if (setattr->sa_acl != NULL) - status = nfsd4_set_nfs4_acl(rqstp, &cstate->current_fh, - setattr->sa_acl); - if (status) - goto out; - status = nfsd_setattr(rqstp, &cstate->current_fh, &setattr->sa_iattr, - 0, (time_t)0); -out: - fh_drop_write(&cstate->current_fh); - return status; -} - -static __be32 -nfsd4_write(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, - struct nfsd4_write *write) -{ - stateid_t *stateid = &write->wr_stateid; - struct file *filp = NULL; - __be32 status = nfs_ok; - unsigned long cnt; - - /* no need to check permission - this will be done in nfsd_write() */ - - if (write->wr_offset >= OFFSET_MAX) - return nfserr_inval; - - nfs4_lock_state(); - status = nfs4_preprocess_stateid_op(cstate, stateid, WR_STATE, &filp); - if (filp) - get_file(filp); - nfs4_unlock_state(); - - if (status) { - dprintk("NFSD: nfsd4_write: couldn't process stateid!\n"); - return status; - } - - cnt = write->wr_buflen; - write->wr_how_written = write->wr_stable_how; - gen_boot_verifier(&write->wr_verifier); - - status = nfsd_write(rqstp, &cstate->current_fh, filp, - write->wr_offset, rqstp->rq_vec, write->wr_vlen, - &cnt, &write->wr_how_written); - if (filp) - fput(filp); - - write->wr_bytes_written = cnt; - - return status; -} - -/* This routine never returns NFS_OK! If there are no other errors, it - * will return NFSERR_SAME or NFSERR_NOT_SAME depending on whether the - * attributes matched. VERIFY is implemented by mapping NFSERR_SAME - * to NFS_OK after the call; NVERIFY by mapping NFSERR_NOT_SAME to NFS_OK. - */ -static __be32 -_nfsd4_verify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, - struct nfsd4_verify *verify) -{ - __be32 *buf, *p; - int count; - __be32 status; - - status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP); - if (status) - return status; - - status = check_attr_support(rqstp, cstate, verify->ve_bmval, NULL); - if (status) - return status; - - if ((verify->ve_bmval[0] & FATTR4_WORD0_RDATTR_ERROR) - || (verify->ve_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1)) - return nfserr_inval; - if (verify->ve_attrlen & 3) - return nfserr_inval; - - /* count in words: - * bitmap_len(1) + bitmap(2) + attr_len(1) = 4 - */ - count = 4 + (verify->ve_attrlen >> 2); - buf = kmalloc(count << 2, GFP_KERNEL); - if (!buf) - return nfserr_jukebox; - - status = nfsd4_encode_fattr(&cstate->current_fh, - cstate->current_fh.fh_export, - cstate->current_fh.fh_dentry, buf, - &count, verify->ve_bmval, - rqstp, 0); - - /* this means that nfsd4_encode_fattr() ran out of space */ - if (status == nfserr_resource && count == 0) - status = nfserr_not_same; - if (status) - goto out_kfree; - - /* skip bitmap */ - p = buf + 1 + ntohl(buf[0]); - status = nfserr_not_same; - if (ntohl(*p++) != verify->ve_attrlen) - goto out_kfree; - if (!memcmp(p, verify->ve_attrval, verify->ve_attrlen)) - status = nfserr_same; - -out_kfree: - kfree(buf); - return status; -} - -static __be32 -nfsd4_nverify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, - struct nfsd4_verify *verify) -{ - __be32 status; - - status = _nfsd4_verify(rqstp, cstate, verify); - return status == nfserr_not_same ? nfs_ok : status; -} - -static __be32 -nfsd4_verify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, - struct nfsd4_verify *verify) -{ - __be32 status; - - status = _nfsd4_verify(rqstp, cstate, verify); - return status == nfserr_same ? nfs_ok : status; -} - -/* - * NULL call. - */ -static __be32 -nfsd4_proc_null(struct svc_rqst *rqstp, void *argp, void *resp) -{ - return nfs_ok; -} - -static inline void nfsd4_increment_op_stats(u32 opnum) -{ - if (opnum >= FIRST_NFS4_OP && opnum <= LAST_NFS4_OP) - nfsdstats.nfs4_opcount[opnum]++; -} - -typedef __be32(*nfsd4op_func)(struct svc_rqst *, struct nfsd4_compound_state *, - void *); -typedef u32(*nfsd4op_rsize)(struct svc_rqst *, struct nfsd4_op *op); -typedef void(*stateid_setter)(struct nfsd4_compound_state *, void *); -typedef void(*stateid_getter)(struct nfsd4_compound_state *, void *); - -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, -}; - -struct nfsd4_operation { - nfsd4op_func op_func; - u32 op_flags; - char *op_name; - /* Try to get response size before operation */ - nfsd4op_rsize op_rsize_bop; - stateid_setter op_get_currentstateid; - stateid_getter op_set_currentstateid; -}; - -static struct nfsd4_operation nfsd4_ops[]; - -#ifdef NFSD_DEBUG -static const char *nfsd4_op_name(unsigned opnum); -#endif - -/* - * Enforce NFSv4.1 COMPOUND ordering rules: - * - * Also note, enforced elsewhere: - * - SEQUENCE other than as first op results in - * NFS4ERR_SEQUENCE_POS. (Enforced in nfsd4_sequence().) - * - BIND_CONN_TO_SESSION must be the only op in its compound. - * (Enforced in nfsd4_bind_conn_to_session().) - * - DESTROY_SESSION must be the final operation in a compound, if - * sessionid's in SEQUENCE and DESTROY_SESSION are the same. - * (Enforced in nfsd4_destroy_session().) - */ -static __be32 nfs41_check_op_ordering(struct nfsd4_compoundargs *args) -{ - struct nfsd4_op *op = &args->ops[0]; - - /* These ordering requirements don't apply to NFSv4.0: */ - if (args->minorversion == 0) - return nfs_ok; - /* This is weird, but OK, not our problem: */ - if (args->opcnt == 0) - return nfs_ok; - if (op->status == nfserr_op_illegal) - return nfs_ok; - if (!(nfsd4_ops[op->opnum].op_flags & ALLOWED_AS_FIRST_OP)) - return nfserr_op_not_in_session; - if (op->opnum == OP_SEQUENCE) - return nfs_ok; - if (args->opcnt != 1) - return nfserr_not_only_op; - return nfs_ok; -} - -static inline struct nfsd4_operation *OPDESC(struct nfsd4_op *op) -{ - return &nfsd4_ops[op->opnum]; -} - -bool nfsd4_cache_this_op(struct nfsd4_op *op) -{ - return OPDESC(op)->op_flags & OP_CACHEME; -} - -static bool need_wrongsec_check(struct svc_rqst *rqstp) -{ - struct nfsd4_compoundres *resp = rqstp->rq_resp; - struct nfsd4_compoundargs *argp = rqstp->rq_argp; - struct nfsd4_op *this = &argp->ops[resp->opcnt - 1]; - struct nfsd4_op *next = &argp->ops[resp->opcnt]; - struct nfsd4_operation *thisd; - struct nfsd4_operation *nextd; - - thisd = OPDESC(this); - /* - * Most ops check wronsec on our own; only the putfh-like ops - * have special rules. - */ - if (!(thisd->op_flags & OP_IS_PUTFH_LIKE)) - return false; - /* - * rfc 5661 2.6.3.1.1.6: don't bother erroring out a - * put-filehandle operation if we're not going to use the - * result: - */ - if (argp->opcnt == resp->opcnt) - return false; - - nextd = OPDESC(next); - /* - * Rest of 2.6.3.1.1: certain operations will return WRONGSEC - * errors themselves as necessary; others should check for them - * now: - */ - return !(nextd->op_flags & OP_HANDLES_WRONGSEC); -} - -/* - * COMPOUND call. - */ -static __be32 -nfsd4_proc_compound(struct svc_rqst *rqstp, - struct nfsd4_compoundargs *args, - struct nfsd4_compoundres *resp) -{ - struct nfsd4_op *op; - struct nfsd4_operation *opdesc; - struct nfsd4_compound_state *cstate = &resp->cstate; - int slack_bytes; - u32 plen = 0; - __be32 status; - - resp->xbuf = &rqstp->rq_res; - resp->p = rqstp->rq_res.head[0].iov_base + - rqstp->rq_res.head[0].iov_len; - resp->tagp = resp->p; - /* reserve space for: taglen, tag, and opcnt */ - resp->p += 2 + XDR_QUADLEN(args->taglen); - resp->end = rqstp->rq_res.head[0].iov_base + PAGE_SIZE; - resp->taglen = args->taglen; - resp->tag = args->tag; - resp->opcnt = 0; - resp->rqstp = rqstp; - resp->cstate.minorversion = args->minorversion; - resp->cstate.replay_owner = NULL; - resp->cstate.session = NULL; - fh_init(&resp->cstate.current_fh, NFS4_FHSIZE); - fh_init(&resp->cstate.save_fh, NFS4_FHSIZE); - /* - * Don't use the deferral mechanism for NFSv4; compounds make it - * too hard to avoid non-idempotency problems. - */ - rqstp->rq_usedeferral = 0; - - /* - * According to RFC3010, this takes precedence over all other errors. - */ - status = nfserr_minor_vers_mismatch; - if (args->minorversion > nfsd_supported_minorversion) - goto out; - - status = nfs41_check_op_ordering(args); - if (status) { - op = &args->ops[0]; - op->status = status; - goto encode_op; - } - - while (!status && resp->opcnt < args->opcnt) { - op = &args->ops[resp->opcnt++]; - - dprintk("nfsv4 compound op #%d/%d: %d (%s)\n", - resp->opcnt, args->opcnt, op->opnum, - nfsd4_op_name(op->opnum)); - /* - * The XDR decode routines may have pre-set op->status; - * for example, if there is a miscellaneous XDR error - * it will be set to nfserr_bad_xdr. - */ - if (op->status) - goto encode_op; - - /* We must be able to encode a successful response to - * this operation, with enough room left over to encode a - * failed response to the next operation. If we don't - * have enough room, fail with ERR_RESOURCE. - */ - slack_bytes = (char *)resp->end - (char *)resp->p; - if (slack_bytes < COMPOUND_SLACK_SPACE - + COMPOUND_ERR_SLACK_SPACE) { - BUG_ON(slack_bytes < COMPOUND_ERR_SLACK_SPACE); - op->status = nfserr_resource; - goto encode_op; - } - - opdesc = OPDESC(op); - - if (!cstate->current_fh.fh_dentry) { - if (!(opdesc->op_flags & ALLOWED_WITHOUT_FH)) { - op->status = nfserr_nofilehandle; - goto encode_op; - } - } else if (cstate->current_fh.fh_export->ex_fslocs.migrated && - !(opdesc->op_flags & ALLOWED_ON_ABSENT_FS)) { - op->status = nfserr_moved; - goto encode_op; - } - - /* If op is non-idempotent */ - if (opdesc->op_flags & OP_MODIFIES_SOMETHING) { - plen = opdesc->op_rsize_bop(rqstp, op); - op->status = nfsd4_check_resp_size(resp, plen); - } - - if (op->status) - goto encode_op; - - if (opdesc->op_func) { - if (opdesc->op_get_currentstateid) - opdesc->op_get_currentstateid(cstate, &op->u); - op->status = opdesc->op_func(rqstp, cstate, &op->u); - } else - BUG_ON(op->status == nfs_ok); - - if (!op->status) { - if (opdesc->op_set_currentstateid) - opdesc->op_set_currentstateid(cstate, &op->u); - - if (opdesc->op_flags & OP_CLEAR_STATEID) - clear_current_stateid(cstate); - - if (need_wrongsec_check(rqstp)) - op->status = check_nfsd_access(cstate->current_fh.fh_export, rqstp); - } - -encode_op: - /* Only from SEQUENCE */ - if (resp->cstate.status == nfserr_replay_cache) { - dprintk("%s NFS4.1 replay from cache\n", __func__); - status = op->status; - goto out; - } - if (op->status == nfserr_replay_me) { - op->replay = &cstate->replay_owner->so_replay; - nfsd4_encode_replay(resp, op); - status = op->status = op->replay->rp_status; - } else { - nfsd4_encode_operation(resp, op); - status = op->status; - } - - dprintk("nfsv4 compound op %p opcnt %d #%d: %d: status %d\n", - args->ops, args->opcnt, resp->opcnt, op->opnum, - be32_to_cpu(status)); - - if (cstate->replay_owner) { - nfs4_unlock_state(); - cstate->replay_owner = NULL; - } - /* XXX Ugh, we need to get rid of this kind of special case: */ - if (op->opnum == OP_READ && op->u.read.rd_filp) - fput(op->u.read.rd_filp); - - nfsd4_increment_op_stats(op->opnum); - } - - resp->cstate.status = status; - fh_put(&resp->cstate.current_fh); - fh_put(&resp->cstate.save_fh); - BUG_ON(resp->cstate.replay_owner); -out: - /* Reset deferral mechanism for RPC deferrals */ - rqstp->rq_usedeferral = 1; - dprintk("nfsv4 compound returned %d\n", ntohl(status)); - return status; -} - -#define op_encode_hdr_size (2) -#define op_encode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE)) -#define op_encode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE)) -#define op_encode_change_info_maxsz (5) -#define nfs4_fattr_bitmap_maxsz (4) - -#define op_encode_lockowner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ)) -#define op_encode_lock_denied_maxsz (8 + op_encode_lockowner_maxsz) - -#define nfs4_owner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ)) - -#define op_encode_ace_maxsz (3 + nfs4_owner_maxsz) -#define op_encode_delegation_maxsz (1 + op_encode_stateid_maxsz + 1 + \ - op_encode_ace_maxsz) - -#define op_encode_channel_attrs_maxsz (6 + 1 + 1) - -static inline u32 nfsd4_only_status_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) -{ - return (op_encode_hdr_size) * sizeof(__be32); -} - -static inline u32 nfsd4_status_stateid_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) -{ - return (op_encode_hdr_size + op_encode_stateid_maxsz)* sizeof(__be32); -} - -static inline u32 nfsd4_commit_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) -{ - return (op_encode_hdr_size + op_encode_verifier_maxsz) * sizeof(__be32); -} - -static inline u32 nfsd4_create_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) -{ - return (op_encode_hdr_size + op_encode_change_info_maxsz - + nfs4_fattr_bitmap_maxsz) * sizeof(__be32); -} - -static inline u32 nfsd4_link_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) -{ - return (op_encode_hdr_size + op_encode_change_info_maxsz) - * sizeof(__be32); -} - -static inline u32 nfsd4_lock_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) -{ - return (op_encode_hdr_size + op_encode_lock_denied_maxsz) - * sizeof(__be32); -} - -static inline u32 nfsd4_open_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) -{ - return (op_encode_hdr_size + op_encode_stateid_maxsz - + op_encode_change_info_maxsz + 1 - + nfs4_fattr_bitmap_maxsz - + op_encode_delegation_maxsz) * sizeof(__be32); -} - -static inline u32 nfsd4_read_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) -{ - u32 maxcount = 0, rlen = 0; - - maxcount = svc_max_payload(rqstp); - rlen = op->u.read.rd_length; - - if (rlen > maxcount) - rlen = maxcount; - - return (op_encode_hdr_size + 2) * sizeof(__be32) + rlen; -} - -static inline u32 nfsd4_readdir_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) -{ - u32 rlen = op->u.readdir.rd_maxcount; - - if (rlen > PAGE_SIZE) - rlen = PAGE_SIZE; - - return (op_encode_hdr_size + op_encode_verifier_maxsz) - * sizeof(__be32) + rlen; -} - -static inline u32 nfsd4_remove_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) -{ - return (op_encode_hdr_size + op_encode_change_info_maxsz) - * sizeof(__be32); -} - -static inline u32 nfsd4_rename_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) -{ - return (op_encode_hdr_size + op_encode_change_info_maxsz - + op_encode_change_info_maxsz) * sizeof(__be32); -} - -static inline u32 nfsd4_setattr_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) -{ - return (op_encode_hdr_size + nfs4_fattr_bitmap_maxsz) * sizeof(__be32); -} - -static inline u32 nfsd4_setclientid_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) -{ - return (op_encode_hdr_size + 2 + 1024) * sizeof(__be32); -} - -static inline u32 nfsd4_write_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) -{ - return (op_encode_hdr_size + op_encode_verifier_maxsz) * sizeof(__be32); -} - -static inline u32 nfsd4_exchange_id_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) -{ - return (op_encode_hdr_size + 2 + 1 + /* eir_clientid, eir_sequenceid */\ - 1 + 1 + 0 + /* eir_flags, spr_how, SP4_NONE (for now) */\ - 2 + /*eir_server_owner.so_minor_id */\ - /* eir_server_owner.so_major_id<> */\ - XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 +\ - /* eir_server_scope<> */\ - XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 +\ - 1 + /* eir_server_impl_id array length */\ - 0 /* ignored eir_server_impl_id contents */) * sizeof(__be32); -} - -static inline u32 nfsd4_bind_conn_to_session_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) -{ - return (op_encode_hdr_size + \ - XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + /* bctsr_sessid */\ - 2 /* bctsr_dir, use_conn_in_rdma_mode */) * sizeof(__be32); -} - -static inline u32 nfsd4_create_session_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) -{ - return (op_encode_hdr_size + \ - XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + /* sessionid */\ - 2 + /* csr_sequence, csr_flags */\ - op_encode_channel_attrs_maxsz + \ - op_encode_channel_attrs_maxsz) * sizeof(__be32); -} - -static struct nfsd4_operation nfsd4_ops[] = { - [OP_ACCESS] = { - .op_func = (nfsd4op_func)nfsd4_access, - .op_name = "OP_ACCESS", - }, - [OP_CLOSE] = { - .op_func = (nfsd4op_func)nfsd4_close, - .op_flags = OP_MODIFIES_SOMETHING, - .op_name = "OP_CLOSE", - .op_rsize_bop = (nfsd4op_rsize)nfsd4_status_stateid_rsize, - .op_get_currentstateid = (stateid_getter)nfsd4_get_closestateid, - .op_set_currentstateid = (stateid_setter)nfsd4_set_closestateid, - }, - [OP_COMMIT] = { - .op_func = (nfsd4op_func)nfsd4_commit, - .op_flags = OP_MODIFIES_SOMETHING, - .op_name = "OP_COMMIT", - .op_rsize_bop = (nfsd4op_rsize)nfsd4_commit_rsize, - }, - [OP_CREATE] = { - .op_func = (nfsd4op_func)nfsd4_create, - .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME | OP_CLEAR_STATEID, - .op_name = "OP_CREATE", - .op_rsize_bop = (nfsd4op_rsize)nfsd4_create_rsize, - }, - [OP_DELEGRETURN] = { - .op_func = (nfsd4op_func)nfsd4_delegreturn, - .op_flags = OP_MODIFIES_SOMETHING, - .op_name = "OP_DELEGRETURN", - .op_rsize_bop = nfsd4_only_status_rsize, - .op_get_currentstateid = (stateid_getter)nfsd4_get_delegreturnstateid, - }, - [OP_GETATTR] = { - .op_func = (nfsd4op_func)nfsd4_getattr, - .op_flags = ALLOWED_ON_ABSENT_FS, - .op_name = "OP_GETATTR", - }, - [OP_GETFH] = { - .op_func = (nfsd4op_func)nfsd4_getfh, - .op_name = "OP_GETFH", - }, - [OP_LINK] = { - .op_func = (nfsd4op_func)nfsd4_link, - .op_flags = ALLOWED_ON_ABSENT_FS | OP_MODIFIES_SOMETHING - | OP_CACHEME, - .op_name = "OP_LINK", - .op_rsize_bop = (nfsd4op_rsize)nfsd4_link_rsize, - }, - [OP_LOCK] = { - .op_func = (nfsd4op_func)nfsd4_lock, - .op_flags = OP_MODIFIES_SOMETHING, - .op_name = "OP_LOCK", - .op_rsize_bop = (nfsd4op_rsize)nfsd4_lock_rsize, - .op_set_currentstateid = (stateid_setter)nfsd4_set_lockstateid, - }, - [OP_LOCKT] = { - .op_func = (nfsd4op_func)nfsd4_lockt, - .op_name = "OP_LOCKT", - }, - [OP_LOCKU] = { - .op_func = (nfsd4op_func)nfsd4_locku, - .op_flags = OP_MODIFIES_SOMETHING, - .op_name = "OP_LOCKU", - .op_rsize_bop = (nfsd4op_rsize)nfsd4_status_stateid_rsize, - .op_get_currentstateid = (stateid_getter)nfsd4_get_lockustateid, - }, - [OP_LOOKUP] = { - .op_func = (nfsd4op_func)nfsd4_lookup, - .op_flags = OP_HANDLES_WRONGSEC | OP_CLEAR_STATEID, - .op_name = "OP_LOOKUP", - }, - [OP_LOOKUPP] = { - .op_func = (nfsd4op_func)nfsd4_lookupp, - .op_flags = OP_HANDLES_WRONGSEC | OP_CLEAR_STATEID, - .op_name = "OP_LOOKUPP", - }, - [OP_NVERIFY] = { - .op_func = (nfsd4op_func)nfsd4_nverify, - .op_name = "OP_NVERIFY", - }, - [OP_OPEN] = { - .op_func = (nfsd4op_func)nfsd4_open, - .op_flags = OP_HANDLES_WRONGSEC | OP_MODIFIES_SOMETHING, - .op_name = "OP_OPEN", - .op_rsize_bop = (nfsd4op_rsize)nfsd4_open_rsize, - .op_set_currentstateid = (stateid_setter)nfsd4_set_openstateid, - }, - [OP_OPEN_CONFIRM] = { - .op_func = (nfsd4op_func)nfsd4_open_confirm, - .op_flags = OP_MODIFIES_SOMETHING, - .op_name = "OP_OPEN_CONFIRM", - .op_rsize_bop = (nfsd4op_rsize)nfsd4_status_stateid_rsize, - }, - [OP_OPEN_DOWNGRADE] = { - .op_func = (nfsd4op_func)nfsd4_open_downgrade, - .op_flags = OP_MODIFIES_SOMETHING, - .op_name = "OP_OPEN_DOWNGRADE", - .op_rsize_bop = (nfsd4op_rsize)nfsd4_status_stateid_rsize, - .op_get_currentstateid = (stateid_getter)nfsd4_get_opendowngradestateid, - .op_set_currentstateid = (stateid_setter)nfsd4_set_opendowngradestateid, - }, - [OP_PUTFH] = { - .op_func = (nfsd4op_func)nfsd4_putfh, - .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS - | OP_IS_PUTFH_LIKE | OP_MODIFIES_SOMETHING - | OP_CLEAR_STATEID, - .op_name = "OP_PUTFH", - .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize, - }, - [OP_PUTPUBFH] = { - .op_func = (nfsd4op_func)nfsd4_putrootfh, - .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS - | OP_IS_PUTFH_LIKE | OP_MODIFIES_SOMETHING - | OP_CLEAR_STATEID, - .op_name = "OP_PUTPUBFH", - .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize, - }, - [OP_PUTROOTFH] = { - .op_func = (nfsd4op_func)nfsd4_putrootfh, - .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS - | OP_IS_PUTFH_LIKE | OP_MODIFIES_SOMETHING - | OP_CLEAR_STATEID, - .op_name = "OP_PUTROOTFH", - .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize, - }, - [OP_READ] = { - .op_func = (nfsd4op_func)nfsd4_read, - .op_flags = OP_MODIFIES_SOMETHING, - .op_name = "OP_READ", - .op_rsize_bop = (nfsd4op_rsize)nfsd4_read_rsize, - .op_get_currentstateid = (stateid_getter)nfsd4_get_readstateid, - }, - [OP_READDIR] = { - .op_func = (nfsd4op_func)nfsd4_readdir, - .op_flags = OP_MODIFIES_SOMETHING, - .op_name = "OP_READDIR", - .op_rsize_bop = (nfsd4op_rsize)nfsd4_readdir_rsize, - }, - [OP_READLINK] = { - .op_func = (nfsd4op_func)nfsd4_readlink, - .op_name = "OP_READLINK", - }, - [OP_REMOVE] = { - .op_func = (nfsd4op_func)nfsd4_remove, - .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME, - .op_name = "OP_REMOVE", - .op_rsize_bop = (nfsd4op_rsize)nfsd4_remove_rsize, - }, - [OP_RENAME] = { - .op_func = (nfsd4op_func)nfsd4_rename, - .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME, - .op_name = "OP_RENAME", - .op_rsize_bop = (nfsd4op_rsize)nfsd4_rename_rsize, - }, - [OP_RENEW] = { - .op_func = (nfsd4op_func)nfsd4_renew, - .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS - | OP_MODIFIES_SOMETHING, - .op_name = "OP_RENEW", - .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize, - - }, - [OP_RESTOREFH] = { - .op_func = (nfsd4op_func)nfsd4_restorefh, - .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS - | OP_IS_PUTFH_LIKE | OP_MODIFIES_SOMETHING, - .op_name = "OP_RESTOREFH", - .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize, - }, - [OP_SAVEFH] = { - .op_func = (nfsd4op_func)nfsd4_savefh, - .op_flags = OP_HANDLES_WRONGSEC | OP_MODIFIES_SOMETHING, - .op_name = "OP_SAVEFH", - .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize, - }, - [OP_SECINFO] = { - .op_func = (nfsd4op_func)nfsd4_secinfo, - .op_flags = OP_HANDLES_WRONGSEC, - .op_name = "OP_SECINFO", - }, - [OP_SETATTR] = { - .op_func = (nfsd4op_func)nfsd4_setattr, - .op_name = "OP_SETATTR", - .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME, - .op_rsize_bop = (nfsd4op_rsize)nfsd4_setattr_rsize, - .op_get_currentstateid = (stateid_getter)nfsd4_get_setattrstateid, - }, - [OP_SETCLIENTID] = { - .op_func = (nfsd4op_func)nfsd4_setclientid, - .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS - | OP_MODIFIES_SOMETHING | OP_CACHEME, - .op_name = "OP_SETCLIENTID", - .op_rsize_bop = (nfsd4op_rsize)nfsd4_setclientid_rsize, - }, - [OP_SETCLIENTID_CONFIRM] = { - .op_func = (nfsd4op_func)nfsd4_setclientid_confirm, - .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS - | OP_MODIFIES_SOMETHING | OP_CACHEME, - .op_name = "OP_SETCLIENTID_CONFIRM", - .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize, - }, - [OP_VERIFY] = { - .op_func = (nfsd4op_func)nfsd4_verify, - .op_name = "OP_VERIFY", - }, - [OP_WRITE] = { - .op_func = (nfsd4op_func)nfsd4_write, - .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME, - .op_name = "OP_WRITE", - .op_rsize_bop = (nfsd4op_rsize)nfsd4_write_rsize, - .op_get_currentstateid = (stateid_getter)nfsd4_get_writestateid, - }, - [OP_RELEASE_LOCKOWNER] = { - .op_func = (nfsd4op_func)nfsd4_release_lockowner, - .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS - | OP_MODIFIES_SOMETHING, - .op_name = "OP_RELEASE_LOCKOWNER", - .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize, - }, - - /* NFSv4.1 operations */ - [OP_EXCHANGE_ID] = { - .op_func = (nfsd4op_func)nfsd4_exchange_id, - .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP - | OP_MODIFIES_SOMETHING, - .op_name = "OP_EXCHANGE_ID", - .op_rsize_bop = (nfsd4op_rsize)nfsd4_exchange_id_rsize, - }, - [OP_BIND_CONN_TO_SESSION] = { - .op_func = (nfsd4op_func)nfsd4_bind_conn_to_session, - .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP - | OP_MODIFIES_SOMETHING, - .op_name = "OP_BIND_CONN_TO_SESSION", - .op_rsize_bop = (nfsd4op_rsize)nfsd4_bind_conn_to_session_rsize, - }, - [OP_CREATE_SESSION] = { - .op_func = (nfsd4op_func)nfsd4_create_session, - .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP - | OP_MODIFIES_SOMETHING, - .op_name = "OP_CREATE_SESSION", - .op_rsize_bop = (nfsd4op_rsize)nfsd4_create_session_rsize, - }, - [OP_DESTROY_SESSION] = { - .op_func = (nfsd4op_func)nfsd4_destroy_session, - .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP - | OP_MODIFIES_SOMETHING, - .op_name = "OP_DESTROY_SESSION", - .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize, - }, - [OP_SEQUENCE] = { - .op_func = (nfsd4op_func)nfsd4_sequence, - .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP, - .op_name = "OP_SEQUENCE", - }, - [OP_DESTROY_CLIENTID] = { - .op_func = (nfsd4op_func)nfsd4_destroy_clientid, - .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP - | OP_MODIFIES_SOMETHING, - .op_name = "OP_DESTROY_CLIENTID", - .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize, - }, - [OP_RECLAIM_COMPLETE] = { - .op_func = (nfsd4op_func)nfsd4_reclaim_complete, - .op_flags = ALLOWED_WITHOUT_FH | OP_MODIFIES_SOMETHING, - .op_name = "OP_RECLAIM_COMPLETE", - .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize, - }, - [OP_SECINFO_NO_NAME] = { - .op_func = (nfsd4op_func)nfsd4_secinfo_no_name, - .op_flags = OP_HANDLES_WRONGSEC, - .op_name = "OP_SECINFO_NO_NAME", - }, - [OP_TEST_STATEID] = { - .op_func = (nfsd4op_func)nfsd4_test_stateid, - .op_flags = ALLOWED_WITHOUT_FH, - .op_name = "OP_TEST_STATEID", - }, - [OP_FREE_STATEID] = { - .op_func = (nfsd4op_func)nfsd4_free_stateid, - .op_flags = ALLOWED_WITHOUT_FH | OP_MODIFIES_SOMETHING, - .op_name = "OP_FREE_STATEID", - .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize, - }, -}; - -#ifdef NFSD_DEBUG -static const char *nfsd4_op_name(unsigned opnum) -{ - if (opnum < ARRAY_SIZE(nfsd4_ops)) - return nfsd4_ops[opnum].op_name; - return "unknown_operation"; -} -#endif - -#define nfsd4_voidres nfsd4_voidargs -struct nfsd4_voidargs { int dummy; }; - -static struct svc_procedure nfsd_procedures4[2] = { - [NFSPROC4_NULL] = { - .pc_func = (svc_procfunc) nfsd4_proc_null, - .pc_encode = (kxdrproc_t) nfs4svc_encode_voidres, - .pc_argsize = sizeof(struct nfsd4_voidargs), - .pc_ressize = sizeof(struct nfsd4_voidres), - .pc_cachetype = RC_NOCACHE, - .pc_xdrressize = 1, - }, - [NFSPROC4_COMPOUND] = { - .pc_func = (svc_procfunc) nfsd4_proc_compound, - .pc_decode = (kxdrproc_t) nfs4svc_decode_compoundargs, - .pc_encode = (kxdrproc_t) nfs4svc_encode_compoundres, - .pc_argsize = sizeof(struct nfsd4_compoundargs), - .pc_ressize = sizeof(struct nfsd4_compoundres), - .pc_release = nfsd4_release_compoundargs, - .pc_cachetype = RC_NOCACHE, - .pc_xdrressize = NFSD_BUFSIZE/4, - }, -}; - -struct svc_version nfsd_version4 = { - .vs_vers = 4, - .vs_nproc = 2, - .vs_proc = nfsd_procedures4, - .vs_dispatch = nfsd_dispatch, - .vs_xdrsize = NFS4_SVC_XDRSIZE, -}; - -/* - * Local variables: - * c-basic-offset: 8 - * End: - */ |