int _9p_readdir( _9p_request_data_t * preq9p, void * pworker_data, u32 * plenout, char * preply) { char * cursor = preq9p->_9pmsg + _9P_HDR_SIZE + _9P_TYPE_SIZE ; nfs_worker_data_t * pwkrdata = (nfs_worker_data_t *)pworker_data ; int rc = 0 ; u32 err = 0 ; u16 * msgtag = NULL ; u32 * fid = NULL ; u64 * offset = NULL ; u32 * count = NULL ; u32 dcount = 0 ; u32 recsize = 0 ; u16 name_len = 0 ; char * name_str = NULL ; u8 * qid_type = NULL ; u64 * qid_path = NULL ; char * dcount_pos = NULL ; cache_inode_status_t cache_status; cache_inode_dir_entry_t **dirent_array = NULL; cache_inode_endofdir_t eod_met; cache_entry_t * pentry_dot_dot = NULL ; cache_inode_dir_entry_t dirent_dot ; cache_inode_dir_entry_t dirent_dot_dot ; unsigned int cookie = 0; unsigned int end_cookie = 0; unsigned int estimated_num_entries = 0 ; unsigned int num_entries = 0 ; unsigned int delta = 0 ; int unlock = FALSE ; u64 i = 0LL ; if ( !preq9p || !pworker_data || !plenout || !preply ) return -1 ; _9p_fid_t * pfid = NULL ; /* Get data */ _9p_getptr( cursor, msgtag, u16 ) ; _9p_getptr( cursor, fid, u32 ) ; _9p_getptr( cursor, offset, u64 ) ; _9p_getptr( cursor, count, u32 ) ; LogDebug( COMPONENT_9P, "TREADDIR: tag=%u fid=%u offset=%llu count=%u", (u32)*msgtag, *fid, (unsigned long long)*offset, *count ) ; if( *fid >= _9P_FID_PER_CONN ) { err = ERANGE ; rc = _9p_rerror( preq9p, msgtag, &err, plenout, preply ) ; return rc ; } pfid = &preq9p->pconn->fids[*fid] ; /* Use Cache Inode to read the directory's content */ cookie = (unsigned int)*offset ; /* For each entry, returns: * qid = 13 bytes * offset = 8 bytes * type = 1 byte * namelen = 2 bytes * namestr = ~16 bytes (average size) * ------------------- * total = ~40 bytes (average size) per dentry */ estimated_num_entries = (unsigned int)( *count / 40 ) ; if((dirent_array = (cache_inode_dir_entry_t **) Mem_Alloc_Label( estimated_num_entries * sizeof(cache_inode_dir_entry_t*), "cache_inode_dir_entry_t in _9p_readdir")) == NULL) { err = EIO ; rc = _9p_rerror( preq9p, msgtag, &err, plenout, preply ) ; return rc ; } /* Is this the first request ? */ if( *offset == 0 ) { /* compute the parent entry */ if( ( pentry_dot_dot = cache_inode_lookupp( pfid->pentry, pwkrdata->ht, &pwkrdata->cache_inode_client, &pfid->fsal_op_context, &cache_status) ) == NULL ) { err = _9p_tools_errno( cache_status ) ; ; rc = _9p_rerror( preq9p, msgtag, &err, plenout, preply ) ; return rc ; } /* Deal with "." and ".." */ dirent_dot.pentry = pfid->pentry ; strcpy( dirent_dot.name.name, "." ) ; dirent_dot.name.len = strlen( dirent_dot.name.name ) ; dirent_array[0] = &dirent_dot ; dirent_dot_dot.pentry = pentry_dot_dot ; strcpy( dirent_dot_dot.name.name, ".." ) ; dirent_dot_dot.name.len = strlen( dirent_dot_dot.name.name ) ; dirent_array[1] = &dirent_dot_dot ; delta = 2 ; } else delta = 0 ; if( *offset == 2 ) { /* offset == 2 as an input as one and only reason: * - a former call with offset=0 was made and the dir was empty * - '.' and '..' were returned and nothing else * - the client makes a new call, expecting it to have empty return */ num_entries = 0 ; /* Empty return */ unlock = FALSE ; } else if(cache_inode_readdir( pfid->pentry, pfid->pexport->cache_inode_policy, cookie, estimated_num_entries - delta, &num_entries, (uint64_t *)&end_cookie, &eod_met, &dirent_array[delta], pwkrdata->ht, &unlock, &pwkrdata->cache_inode_client, &pfid->fsal_op_context, &cache_status) != CACHE_INODE_SUCCESS) { if( unlock ) V_r( &pfid->pentry->lock ) ; err = _9p_tools_errno( cache_status ) ; ; rc = _9p_rerror( preq9p, msgtag, &err, plenout, preply ) ; return rc ; } /* Unlock the directory if needed */ if( unlock ) V_r( &pfid->pentry->lock ) ; /* Never go behind _9P_MAXDIRCOUNT */ if( num_entries > _9P_MAXDIRCOUNT ) num_entries = _9P_MAXDIRCOUNT ; /* Build the reply */ _9p_setinitptr( cursor, preply, _9P_RREADDIR ) ; _9p_setptr( cursor, msgtag, u16 ) ; /* Remember dcount position for later use */ _9p_savepos( cursor, dcount_pos, u32 ) ; /* fills in the dentry in 9P marshalling */ for( i = 0 ; i < num_entries + delta ; i++ ) { recsize = 0 ; /* Build qid */ switch( dirent_array[i]->pentry->internal_md.type ) { case REGULAR_FILE: qid_path = (u64 *)&dirent_array[i]->pentry->object.file.attributes.fileid ; qid_type = &qid_type_file ; break ; case CHARACTER_FILE: case BLOCK_FILE: case SOCKET_FILE: case FIFO_FILE: qid_path = (u64 *)&dirent_array[i]->pentry->object.special_obj.attributes.fileid ; qid_type = &qid_type_file ; break ; case SYMBOLIC_LINK: qid_path = (u64 *)&dirent_array[i]->pentry->object.symlink->attributes.fileid ; qid_type = &qid_type_symlink; break ; case DIRECTORY: case FS_JUNCTION: qid_path = (u64 *)&dirent_array[i]->pentry->object.dir.attributes.fileid ; qid_type = &qid_type_dir ; break ; case UNASSIGNED: case RECYCLED: default: LogMajor( COMPONENT_9P, "implementation error, you should not see this message !!!!!!" ) ; err = EINVAL ; rc = _9p_rerror( preq9p, msgtag, &err, plenout, preply ) ; return rc ; break ; } /* Get dirent name information */ name_str = dirent_array[i]->name.name ; name_len = dirent_array[i]->name.len ; /* Add 13 bytes in recsize for qid + 8 bytes for offset + 1 for type + 2 for strlen = 24 bytes*/ recsize = 24 + name_len ; /* Check if there is room left for another dentry */ if( dcount + recsize > *count ) break ; /* exit for loop */ else dcount += recsize ; /* qid in 3 parts */ _9p_setptr( cursor, qid_type, u8 ) ; _9p_setvalue( cursor, 0, u32 ) ; /* qid_version set to 0 to prevent the client from caching */ _9p_setptr( cursor, qid_path, u64 ) ; /* offset */ _9p_setvalue( cursor, i+cookie+1, u64 ) ; /* Type (again ?) */ _9p_setptr( cursor, qid_type, u8 ) ; /* name */ _9p_setstr( cursor, name_len, name_str ) ; LogDebug( COMPONENT_9P, "RREADDIR dentry: recsize=%u dentry={ off=%llu,qid=(type=%u,version=%u,path=%llu),type=%u,name=%s,pentry=%p", recsize, (unsigned long long)i+cookie+1, *qid_type, 0, (unsigned long long)*qid_path, *qid_type, name_str, dirent_array[i]->pentry ) ; } /* for( i = 0 , ... ) */ if( !CACHE_INODE_KEEP_CONTENT( pfid->pentry->policy ) ) cache_inode_release_dirent( dirent_array, num_entries, &pwkrdata->cache_inode_client ) ; Mem_Free((char *)dirent_array); /* Set buffsize in previously saved position */ _9p_setvalue( dcount_pos, dcount, u32 ) ; _9p_setendptr( cursor, preply ) ; _9p_checkbound( cursor, preply, plenout ) ; LogDebug( COMPONENT_9P, "RREADDIR: tag=%u fid=%u dcount=%u", (u32)*msgtag, *fid , dcount ) ; return 1 ; }
/** * nfs4_op_readdir: The NFS4_OP_READDIR. * * Implements the NFS4_OP_READDIR. If fh is a pseudo FH, then call is routed to routine nfs4_op_readdir_pseudo * * @param op [IN] pointer to nfs4_op arguments * @param data [INOUT] Pointer to the compound request's data * @param resp [IN] Pointer to nfs4_op results * * @return NFS4_OK if ok, any other value show an error. * */ int nfs4_op_readdir(struct nfs_argop4 *op, compound_data_t * data, struct nfs_resop4 *resp) { cache_entry_t *dir_pentry = NULL; cache_entry_t *pentry = NULL; cache_inode_endofdir_t eod_met; fsal_attrib_list_t attrlookup; cache_inode_status_t cache_status; cache_inode_status_t cache_status_attr; char __attribute__ ((__unused__)) funcname[] = "nfs4_op_readdir"; unsigned long dircount; unsigned long maxcount; entry4 *entry_nfs_array; cache_inode_dir_entry_t **dirent_array = NULL; verifier4 cookie_verifier; uint64_t cookie = 0; uint64_t end_cookie = 0; fsal_handle_t *entry_FSALhandle; nfs_fh4 entryFH; char val_fh[NFS4_FHSIZE]; entry_name_array_item_t *entry_name_array = NULL; unsigned int estimated_num_entries; unsigned int num_entries; int dir_pentry_unlock = FALSE; unsigned int i = 0; unsigned int outbuffsize = 0 ; unsigned int entrysize = 0 ; bitmap4 RdAttrErrorBitmap = { 1, (uint32_t *) "\0\0\0\b" }; /* 0xB = 11 = FATTR4_RDATTR_ERROR */ attrlist4 RdAttrErrorVals = { 0, NULL }; /* Nothing to be seen here */ resp->resop = NFS4_OP_READDIR; res_READDIR4.status = NFS4_OK; entryFH.nfs_fh4_len = 0; entryFH.nfs_fh4_val = val_fh; /* If there is no FH */ if(nfs4_Is_Fh_Empty(&(data->currentFH))) { res_READDIR4.status = NFS4ERR_NOFILEHANDLE; return res_READDIR4.status; } /* If the filehandle is invalid */ if(nfs4_Is_Fh_Invalid(&(data->currentFH))) { res_READDIR4.status = NFS4ERR_BADHANDLE; return res_READDIR4.status; } /* Tests if the Filehandle is expired (for volatile filehandle) */ if(nfs4_Is_Fh_Expired(&(data->currentFH))) { res_READDIR4.status = NFS4ERR_FHEXPIRED; return res_READDIR4.status; } /* Pseudo Fs management */ if(nfs4_Is_Fh_Pseudo(&(data->currentFH))) return nfs4_op_readdir_pseudo(op, data, resp); /* Xattrs management */ if(nfs4_Is_Fh_Xattr(&(data->currentFH))) return nfs4_op_readdir_xattr(op, data, resp); /* You can readdir only within a directory */ dir_pentry = data->current_entry; if(data->current_filetype != DIRECTORY) { res_READDIR4.status = NFS4ERR_NOTDIR; return res_READDIR4.status; } /* get the characteristic value for readdir operation */ dircount = arg_READDIR4.dircount; maxcount = arg_READDIR4.maxcount*0.9; cookie = (unsigned int)arg_READDIR4.cookie; /* dircount is considered meaningless by many nfsv4 client (like the CITI * one). we use maxcount instead. */ /* the Linux 3.0, 3.1.0 clients vs. TCP Ganesha comes out 10x slower * with 500 max entries */ #if 0 /* takes 2s to return 2999 entries */ estimated_num_entries = maxcount / sizeof(entry4); #else /* takes 20s to return 2999 entries */ estimated_num_entries = 50; #endif LogFullDebug(COMPONENT_NFS_V4, "--- nfs4_op_readdir ---> dircount=%lu maxcount=%lu arg_cookie=%" PRIu64" cookie=%"PRIu64" estimated_num_entries=%u", dircount, maxcount, arg_READDIR4.cookie, cookie, estimated_num_entries); /* Do not use a cookie of 1 or 2 (reserved values) */ if(cookie == 1 || cookie == 2) { res_READDIR4.status = NFS4ERR_BAD_COOKIE; return res_READDIR4.status; } /* Get only attributes that are allowed to be read */ if(!nfs4_Fattr_Check_Access_Bitmap(&arg_READDIR4.attr_request, FATTR4_ATTR_READ)) { res_READDIR4.status = NFS4ERR_INVAL; return res_READDIR4.status; } /* If maxcount is too short, return NFS4ERR_TOOSMALL */ if(maxcount < sizeof(entry4) || estimated_num_entries == 0) { res_READDIR4.status = NFS4ERR_TOOSMALL; return res_READDIR4.status; } /* * If cookie verifier is used, then an non-trivial value is * returned to the client This value is the mtime of * the pentry. If verifier is unused (as in many NFS * Servers) then only a set of zeros is returned (trivial * value) */ memset(cookie_verifier, 0, NFS4_VERIFIER_SIZE); if(data->pexport->UseCookieVerifier == 1) memcpy(cookie_verifier, &dir_pentry->internal_md.mod_time, sizeof(time_t)); /* Cookie delivered by the server and used by the client SHOULD not ne 0, 1 or 2 (cf RFC3530, page192) * because theses value are reserved for special use. * 0 - cookie for first READDIR * 1 - reserved for . on client handside * 2 - reserved for .. on client handside * Entries '.' and '..' are not returned also * For these reason, there will be an offset of 3 between NFS4 cookie and * HPSS cookie */ if((cookie != 0) && (data->pexport->UseCookieVerifier == 1)) { if(memcmp(cookie_verifier, arg_READDIR4.cookieverf, NFS4_VERIFIER_SIZE) != 0) { res_READDIR4.status = NFS4ERR_BAD_COOKIE; return res_READDIR4.status; } } /* The default behaviour is to consider that eof is not reached, the * returned values by cache_inode_readdir will let us know if eod was * reached or not */ res_READDIR4.READDIR4res_u.resok4.reply.eof = FALSE; /* Get prepared for readdir */ if((dirent_array = (cache_inode_dir_entry_t **) Mem_Alloc( estimated_num_entries * sizeof(cache_inode_dir_entry_t*))) == NULL) { res_READDIR4.status = NFS4ERR_SERVERFAULT; goto out; } /* Perform the readdir operation */ if(cache_inode_readdir(dir_pentry, data->pexport->cache_inode_policy, cookie, estimated_num_entries, &num_entries, &end_cookie, &eod_met, dirent_array, data->ht, &dir_pentry_unlock, data->pclient, data->pcontext, &cache_status) != CACHE_INODE_SUCCESS) { res_READDIR4.status = nfs4_Errno(cache_status); goto out; } /* For an empty directory, we will find only . and .., so reply as if the * end is reached */ if(num_entries == 0) { /* only . and .. */ res_READDIR4.READDIR4res_u.resok4.reply.entries = NULL; res_READDIR4.READDIR4res_u.resok4.reply.eof = TRUE; memcpy(res_READDIR4.READDIR4res_u.resok4.cookieverf, cookie_verifier, NFS4_VERIFIER_SIZE); } else { /* Start computing the outbuffsize */ outbuffsize = sizeof( bool_t) /* eof */ + sizeof( nfsstat4 ) /* READDIR4res::status */ + NFS4_VERIFIER_SIZE /* cookie verifier */ ; /* Allocation of reply structures */ if((entry_name_array = (entry_name_array_item_t *) Mem_Alloc(num_entries * (FSAL_MAX_NAME_LEN + 1))) == NULL) { LogError(COMPONENT_NFS_V4, ERR_SYS, ERR_MALLOC, errno); res_READDIR4.status = NFS4ERR_SERVERFAULT; return res_READDIR4.status; } memset((char *)entry_name_array, 0, num_entries * (FSAL_MAX_NAME_LEN + 1)); if((entry_nfs_array = (entry4 *) Mem_Alloc(num_entries * sizeof(entry4))) == NULL) { LogError(COMPONENT_NFS_V4, ERR_SYS, ERR_MALLOC, errno); res_READDIR4.status = NFS4ERR_SERVERFAULT; return res_READDIR4.status; } memset((char *)entry_nfs_array, 0, num_entries * sizeof(entry4)); for(i = 0; i < num_entries; i++) { entry_nfs_array[i].name.utf8string_val = entry_name_array[i]; if(str2utf8(dirent_array[i]->name.name, &entry_nfs_array[i].name) == -1) { res_READDIR4.status = NFS4ERR_SERVERFAULT; goto out; } /* Set the cookie value */ entry_nfs_array[i].cookie = dirent_array[i]->cookie; /* Get the pentry for the object's attributes and filehandle */ if( ( pentry = cache_inode_lookup_no_mutex( dir_pentry, &dirent_array[i]->name, data->pexport->cache_inode_policy, &attrlookup, data->ht, data->pclient, data->pcontext, &cache_status ) ) == NULL ) { Mem_Free((char *)entry_nfs_array); /* Return the fattr4_rdattr_error , cf RFC3530, page 192 */ entry_nfs_array[i].attrs.attrmask = RdAttrErrorBitmap; entry_nfs_array[i].attrs.attr_vals = RdAttrErrorVals; res_READDIR4.status = NFS4ERR_SERVERFAULT; goto out; } /* If file handle is asked in the attributes, provide it */ if(arg_READDIR4.attr_request.bitmap4_val != NULL && (arg_READDIR4.attr_request.bitmap4_val[0] & FATTR4_FILEHANDLE)) { if((entry_FSALhandle = cache_inode_get_fsal_handle(pentry, &cache_status_attr)) == NULL) { /* Faulty Handle or pentry */ Mem_Free((char *)entry_nfs_array); res_READDIR4.status = NFS4ERR_SERVERFAULT; goto out; } if(!nfs4_FSALToFhandle(&entryFH, entry_FSALhandle, data)) { /* Faulty type */ Mem_Free((char *)entry_nfs_array); res_READDIR4.status = NFS4ERR_SERVERFAULT; goto out; } } if(nfs4_FSALattr_To_Fattr(data->pexport, &attrlookup, &(entry_nfs_array[i].attrs), data, &entryFH, &(arg_READDIR4.attr_request)) != 0) { /* Return the fattr4_rdattr_error , cf RFC3530, page 192 */ entry_nfs_array[i].attrs.attrmask = RdAttrErrorBitmap; entry_nfs_array[i].attrs.attr_vals = RdAttrErrorVals; } /* Update the size of the output buffer */ entrysize = sizeof( nfs_cookie4 ) ; /* nfs_cookie4 */ entrysize += sizeof( u_int ) ; /* pathname4::utf8strings_len */ entrysize += entry_nfs_array[i].name.utf8string_len ; entrysize += sizeof( u_int ) ; /* bitmap4_len */ entrysize += entry_nfs_array[i].attrs.attrmask.bitmap4_len ; entrysize += sizeof( u_int ) ; /* attrlist4_len */ entrysize += entry_nfs_array[i].attrs.attr_vals.attrlist4_len ; entrysize += sizeof( caddr_t ) ; outbuffsize += entrysize; LogFullDebug(COMPONENT_NFS_V4, " === nfs4_op_readdir ===> i=%u name=%s cookie=%"PRIu64" " "entrysize=%u buffsize=%u", i, dirent_array[i]->name.name, entry_nfs_array[i].cookie, entrysize, outbuffsize); /* Chain the entries together */ entry_nfs_array[i].nextentry = NULL; if(i != 0) { if( outbuffsize < maxcount ) entry_nfs_array[i - 1].nextentry = &(entry_nfs_array[i]); else { LogFullDebug(COMPONENT_NFS_V4, "=== nfs4_op_readdir ===> " "maxcount reached at %u entries name=%s " "cookie=%llu " "buffsize=%u (return early)", i+1, dirent_array[i]->name.name, (unsigned long long)entry_nfs_array[i].cookie, outbuffsize); entry_nfs_array[i - 1].nextentry = NULL ; break ; } } } /* for i */ if((i == num_entries) && (eod_met == END_OF_DIR)) { LogFullDebug(COMPONENT_NFS_V4, "End of directory reached: num_entries=%d i=%d", num_entries, i); /* This is the end of the directory */ res_READDIR4.READDIR4res_u.resok4.reply.eof = TRUE; memcpy(res_READDIR4.READDIR4res_u.resok4.cookieverf, cookie_verifier, NFS4_VERIFIER_SIZE); } /* Put the entry's list in the READDIR reply */ res_READDIR4.READDIR4res_u.resok4.reply.entries = entry_nfs_array; } /* Do not forget to set the verifier */ memcpy((char *)res_READDIR4.READDIR4res_u.resok4.cookieverf, cookie_verifier, NFS4_VERIFIER_SIZE); res_READDIR4.status = NFS4_OK; out: /* release read lock on dir_pentry, if requested */ if (dir_pentry_unlock) V_r(&dir_pentry->lock); if (dirent_array) { if( !CACHE_INODE_KEEP_CONTENT( dir_pentry->policy ) ) cache_inode_release_dirent( dirent_array, num_entries, data->pclient ) ; Mem_Free((char *)dirent_array); } return res_READDIR4.status; } /* nfs4_op_readdir */
int nfs3_Readdirplus(nfs_arg_t * parg, exportlist_t * pexport, fsal_op_context_t * pcontext, cache_inode_client_t * pclient, hash_table_t * ht, struct svc_req *preq, nfs_res_t * pres) { static char __attribute__ ((__unused__)) funcName[] = "nfs3_Readdirplus"; typedef char entry_name_array_item_t[FSAL_MAX_NAME_LEN]; typedef char fh3_buffer_item_t[NFS3_FHSIZE]; unsigned int delta = 0; cache_entry_t *dir_pentry = NULL; cache_entry_t *pentry_dot_dot = NULL; unsigned long dircount; unsigned long maxcount; fsal_attrib_list_t dir_attr; fsal_attrib_list_t entry_attr; uint64_t begin_cookie; uint64_t end_cookie; uint64_t cache_inode_cookie; cache_inode_dir_entry_t **dirent_array = NULL; cookieverf3 cookie_verifier; int rc; unsigned int i = 0; unsigned int num_entries; unsigned long space_used; unsigned long estimated_num_entries; unsigned long asked_num_entries; cache_inode_file_type_t dir_filetype; cache_inode_endofdir_t eod_met = UNASSIGNED_EOD; cache_inode_status_t cache_status; cache_inode_status_t cache_status_gethandle; fsal_handle_t *pfsal_handle = NULL; entry_name_array_item_t *entry_name_array = NULL; fh3_buffer_item_t *fh3_array = NULL; entryplus3 reference_entry; READDIRPLUS3resok reference_reply; int dir_pentry_unlock = FALSE; if(isDebug(COMPONENT_NFSPROTO) || isDebug(COMPONENT_NFS_READDIR)) { char str[LEN_FH_STR]; log_components_t component; sprint_fhandle3(str, &(parg->arg_readdirplus3.dir)); if(isDebug(COMPONENT_NFSPROTO)) component = COMPONENT_NFSPROTO; else component = COMPONENT_NFS_READDIR; LogDebug(component, "REQUEST PROCESSING: Calling nfs3_Readdirplus handle: %s", str); } /* to avoid setting it on each error case */ pres->res_readdir3.READDIR3res_u.resfail.dir_attributes.attributes_follow = FALSE; dircount = parg->arg_readdirplus3.dircount; maxcount = parg->arg_readdirplus3.maxcount; begin_cookie = (unsigned int)parg->arg_readdirplus3.cookie; /* FIXME: This calculation over estimates the number of bytes that * READDIRPLUS3resok will use on the wire by 4 bytes on x86_64. */ space_used = sizeof(reference_reply.dir_attributes.attributes_follow) + sizeof(reference_reply.dir_attributes.post_op_attr_u.attributes) + sizeof(reference_reply.cookieverf) + sizeof(reference_reply.reply.eof); estimated_num_entries = (dircount - space_used + sizeof(entry3 *)) / (sizeof(entry3) - sizeof(char *)*2); // estimated_num_entries *= 4; LogFullDebug(COMPONENT_NFS_READDIR, "nfs3_Readdirplus: dircount=%lu maxcount=%lu begin_cookie=%" PRIu64" space_used=%lu estimated_num_entries=%lu", dircount, maxcount, begin_cookie, space_used, estimated_num_entries); /* Is this a xattr FH ? */ if(nfs3_Is_Fh_Xattr(&(parg->arg_readdirplus3.dir))) return nfs3_Readdirplus_Xattr(parg, pexport, pcontext, pclient, ht, preq, pres); /* Convert file handle into a vnode */ if((dir_pentry = nfs_FhandleToCache(preq->rq_vers, NULL, &(parg->arg_readdirplus3.dir), NULL, NULL, &(pres->res_readdirplus3.status), NULL, &dir_attr, pcontext, pclient, ht, &rc)) == NULL) { /* return NFS_REQ_DROP ; */ return rc; } /* Extract the filetype */ dir_filetype = cache_inode_fsal_type_convert(dir_attr.type); /* Sanity checks -- must be a directory */ if(dir_filetype != DIRECTORY) { pres->res_readdirplus3.status = NFS3ERR_NOTDIR; return NFS_REQ_OK; } /* switch */ memset(cookie_verifier, 0, sizeof(cookieverf3)); /* * If cookie verifier is used, then an non-trivial value is * returned to the client This value is the mtime of * the directory. If verifier is unused (as in many NFS * Servers) then only a set of zeros is returned (trivial * value) */ if(pexport->UseCookieVerifier) memcpy(cookie_verifier, &(dir_attr.mtime), sizeof(dir_attr.mtime)); /* * nothing to do if != 0 because the area is already full of * zero */ if(pexport->UseCookieVerifier && (begin_cookie != 0)) { /* * Not the first call, so we have to check the cookie * verifier */ if(memcmp(cookie_verifier, parg->arg_readdirplus3.cookieverf, NFS3_COOKIEVERFSIZE) != 0) { pres->res_readdirplus3.status = NFS3ERR_BAD_COOKIE; return NFS_REQ_OK; } } if((dirent_array = (cache_inode_dir_entry_t **) Mem_Alloc_Label( estimated_num_entries * sizeof(cache_inode_dir_entry_t*), "cache_inode_dir_entry_t in nfs3_Readdirplus")) == NULL) { pres->res_readdirplus3.status = NFS3ERR_IO; return NFS_REQ_DROP; } pres->res_readdirplus3.READDIRPLUS3res_u.resok.reply.entries = NULL; pres->res_readdirplus3.READDIRPLUS3res_u.resok.reply.eof = FALSE; /** @todo XXXX fix this--compare nfs4_op_readdir */ /* How many entries will we retry from cache_inode ? */ if(begin_cookie > 1) { asked_num_entries = estimated_num_entries; cache_inode_cookie = begin_cookie; } else { asked_num_entries = ((estimated_num_entries > 2) ? estimated_num_entries - 2 : 0); /* Keep space for '.' and '..' */ cache_inode_cookie = 0; } /* A definition that will be very useful to avoid very long names for variables */ #define RES_READDIRPLUS_REPLY pres->res_readdirplus3.READDIRPLUS3res_u.resok.reply /* Call readdir */ if(cache_inode_readdir(dir_pentry, pexport->cache_inode_policy, cache_inode_cookie, asked_num_entries, &num_entries, &end_cookie, &eod_met, dirent_array, ht, &dir_pentry_unlock, pclient, pcontext, &cache_status) == CACHE_INODE_SUCCESS) { LogFullDebug(COMPONENT_NFS_READDIR, "Readdirplus3 -> Call to cache_inode_readdir( cookie=%" PRIu64", asked=%lu ) -> num_entries = %u", cache_inode_cookie, asked_num_entries, num_entries); if(eod_met == END_OF_DIR) { LogFullDebug(COMPONENT_NFS_READDIR, "+++++++++++++++++++++++++++++++++++++++++> EOD MET "); } /* If nothing was found, return nothing, but if cookie=0, we should return . and .. */ if((num_entries == 0) && (asked_num_entries != 0) && (begin_cookie > 1)) { pres->res_readdirplus3.status = NFS3_OK; pres->res_readdirplus3.READDIRPLUS3res_u.resok.reply.entries = NULL; pres->res_readdirplus3.READDIRPLUS3res_u.resok.reply.eof = TRUE; nfs_SetPostOpAttr(pcontext, pexport, dir_pentry, NULL, &(pres->res_readdirplus3.READDIRPLUS3res_u.resok. dir_attributes)); memcpy(pres->res_readdirplus3.READDIRPLUS3res_u.resok.cookieverf, cookie_verifier, sizeof(cookieverf3)); } else { /* Allocation of the structure for reply */ entry_name_array = (entry_name_array_item_t *) Mem_Alloc_Label(estimated_num_entries * (FSAL_MAX_NAME_LEN + 1), "entry_name_array in nfs3_Readdirplus"); if(entry_name_array == NULL) { /* after successful cache_inode_readdir, dir_pentry may be * read locked */ if (dir_pentry_unlock) V_r(&dir_pentry->lock); if( !CACHE_INODE_KEEP_CONTENT( dir_pentry->policy ) ) cache_inode_release_dirent( dirent_array, num_entries, pclient ) ; Mem_Free((char *)dirent_array); return NFS_REQ_DROP; } pres->res_readdirplus3.READDIRPLUS3res_u.resok.reply.entries = (entryplus3 *) Mem_Alloc_Label(estimated_num_entries * sizeof(entryplus3), "READDIRPLUS3res_u.resok.reply.entries"); if(pres->res_readdirplus3.READDIRPLUS3res_u.resok.reply.entries == NULL) { /* after successful cache_inode_readdir, dir_pentry may be * read locked */ if (dir_pentry_unlock) V_r(&dir_pentry->lock); if( !CACHE_INODE_KEEP_CONTENT( dir_pentry->policy ) ) cache_inode_release_dirent( dirent_array, num_entries, pclient ) ; Mem_Free((char *)dirent_array); Mem_Free((char *)entry_name_array); return NFS_REQ_DROP; } /* Allocation of the file handles */ fh3_array = (fh3_buffer_item_t *) Mem_Alloc_Label(estimated_num_entries * NFS3_FHSIZE, "Filehandle V3 in nfs3_Readdirplus"); if(fh3_array == NULL) { /* after successful cache_inode_readdir, dir_pentry may be * read locked */ if (dir_pentry_unlock) V_r(&dir_pentry->lock); if( !CACHE_INODE_KEEP_CONTENT( dir_pentry->policy ) ) cache_inode_release_dirent( dirent_array, num_entries, pclient ) ; Mem_Free((char *)dirent_array); Mem_Free((char *)entry_name_array); return NFS_REQ_DROP; } delta = 0; /* manage . and .. */ if(begin_cookie == 0) { /* Fill in '.' */ if(estimated_num_entries > 0) { if((pfsal_handle = cache_inode_get_fsal_handle(dir_pentry, &cache_status_gethandle)) == NULL) { /* after successful cache_inode_readdir, dir_pentry * may be read locked */ if (dir_pentry_unlock) V_r(&dir_pentry->lock); if( !CACHE_INODE_KEEP_CONTENT( dir_pentry->policy ) ) cache_inode_release_dirent( dirent_array, num_entries, pclient ) ; Mem_Free((char *)dirent_array); Mem_Free((char *)entry_name_array); Mem_Free((char *)fh3_array); pres->res_readdirplus3.status = nfs3_Errno(cache_status_gethandle); return NFS_REQ_OK; } FSAL_DigestHandle(FSAL_GET_EXP_CTX(pcontext), FSAL_DIGEST_FILEID3, pfsal_handle, (caddr_t) & (RES_READDIRPLUS_REPLY.entries[0]. fileid)); RES_READDIRPLUS_REPLY.entries[0].name = entry_name_array[0]; strcpy(RES_READDIRPLUS_REPLY.entries[0].name, "."); RES_READDIRPLUS_REPLY.entries[0].cookie = 1; pres->res_readdirplus3.READDIRPLUS3res_u.resok.reply.entries[0]. name_handle.post_op_fh3_u.handle.data.data_val = (char *)fh3_array[0]; if(nfs3_FSALToFhandle (&pres->res_readdirplus3.READDIRPLUS3res_u.resok.reply.entries[0]. name_handle.post_op_fh3_u.handle, pfsal_handle, pexport) == 0) { /* after successful cache_inode_readdir, dir_pentry may * be read locked */ if (dir_pentry_unlock) V_r(&dir_pentry->lock); if( !CACHE_INODE_KEEP_CONTENT( dir_pentry->policy ) ) cache_inode_release_dirent( dirent_array, num_entries, pclient ) ; Mem_Free((char *)dirent_array); Mem_Free((char *)entry_name_array); Mem_Free((char *)fh3_array); pres->res_readdirplus3.status = NFS3ERR_BADHANDLE; return NFS_REQ_OK; } RES_READDIRPLUS_REPLY.entries[0].name_attributes.attributes_follow = FALSE; RES_READDIRPLUS_REPLY.entries[0].name_handle.handle_follows = FALSE; entry_attr = dir_pentry->attributes; /* Set PostPoFh3 structure */ pres->res_readdirplus3.READDIRPLUS3res_u.resok.reply.entries[0]. name_handle.handle_follows = TRUE; pres->res_readdirplus3.READDIRPLUS3res_u.resok.reply.entries[0]. name_handle.post_op_fh3_u.handle.data.data_len = sizeof(file_handle_v3_t); nfs_SetPostOpAttr(pcontext, pexport, dir_pentry, &entry_attr, &(pres->res_readdirplus3.READDIRPLUS3res_u.resok. reply.entries[0].name_attributes)); LogFullDebug(COMPONENT_NFS_READDIR, "Readdirplus3 -> i=0 num_entries=%d space_used=%lu maxcount=%lu Name=. FileId=%016llx Cookie=%llu", num_entries, space_used, maxcount, RES_READDIRPLUS_REPLY.entries[0].fileid, RES_READDIRPLUS_REPLY.entries[0].cookie); delta += 1; } } /* Fill in '..' */ if(begin_cookie <= 1) { if(estimated_num_entries > delta) { if((pentry_dot_dot = cache_inode_lookupp_sw(dir_pentry, ht, pclient, pcontext, &cache_status_gethandle, !dir_pentry_unlock)) == NULL) { /* after successful cache_inode_readdir, dir_pentry may * be read locked */ if (dir_pentry_unlock) V_r(&dir_pentry->lock); if( !CACHE_INODE_KEEP_CONTENT( dir_pentry->policy ) ) cache_inode_release_dirent( dirent_array, num_entries, pclient ) ; Mem_Free((char *)dirent_array); Mem_Free((char *)entry_name_array); Mem_Free((char *)fh3_array); pres->res_readdirplus3.status = nfs3_Errno(cache_status_gethandle); return NFS_REQ_OK; } if((pfsal_handle = cache_inode_get_fsal_handle(pentry_dot_dot, &cache_status_gethandle)) == NULL) { /* after successful cache_inode_readdir, dir_pentry may * be read locked */ if (dir_pentry_unlock) V_r(&dir_pentry->lock); if( !CACHE_INODE_KEEP_CONTENT( dir_pentry->policy ) ) cache_inode_release_dirent( dirent_array, num_entries, pclient ) ; Mem_Free((char *)dirent_array); Mem_Free((char *)entry_name_array); Mem_Free((char *)fh3_array); pres->res_readdirplus3.status = nfs3_Errno(cache_status_gethandle); return NFS_REQ_OK; } FSAL_DigestHandle(FSAL_GET_EXP_CTX(pcontext), FSAL_DIGEST_FILEID3, pfsal_handle, (caddr_t) & (RES_READDIRPLUS_REPLY.entries[delta]. fileid)); RES_READDIRPLUS_REPLY.entries[delta].name = entry_name_array[delta]; strcpy(RES_READDIRPLUS_REPLY.entries[delta].name, ".."); /* Getting a file handle */ pres->res_readdirplus3.READDIRPLUS3res_u.resok.reply.entries[delta]. name_handle.post_op_fh3_u.handle.data.data_val = (char *)fh3_array[delta]; if(nfs3_FSALToFhandle (&pres->res_readdirplus3.READDIRPLUS3res_u.resok.reply.entries[delta]. name_handle.post_op_fh3_u.handle, pfsal_handle, pexport) == 0) { /* after successful cache_inode_readdir, dir_pentry may * be read locked */ if (dir_pentry_unlock) V_r(&dir_pentry->lock); if( !CACHE_INODE_KEEP_CONTENT( dir_pentry->policy ) ) cache_inode_release_dirent( dirent_array, num_entries, pclient ) ; Mem_Free((char *)dirent_array); Mem_Free((char *)entry_name_array); Mem_Free((char *)fh3_array); pres->res_readdirplus3.status = NFS3ERR_BADHANDLE; return NFS_REQ_OK; } RES_READDIRPLUS_REPLY.entries[delta].cookie = 2; RES_READDIRPLUS_REPLY.entries[delta].name_attributes.attributes_follow = FALSE; RES_READDIRPLUS_REPLY.entries[delta].name_handle.handle_follows = FALSE; entry_attr = pentry_dot_dot->attributes; /* Set PostPoFh3 structure */ pres->res_readdirplus3.READDIRPLUS3res_u.resok.reply.entries[delta]. name_handle.handle_follows = TRUE; pres->res_readdirplus3.READDIRPLUS3res_u.resok.reply.entries[delta]. name_handle.post_op_fh3_u.handle.data.data_len = sizeof(file_handle_v3_t); nfs_SetPostOpAttr(pcontext, pexport, pentry_dot_dot, &entry_attr, &(pres->res_readdirplus3.READDIRPLUS3res_u.resok. reply.entries[delta].name_attributes)); LogFullDebug(COMPONENT_NFS_READDIR, "Readdirplus3 -> i=%d num_entries=%d space_used=%lu maxcount=%lu Name=.. FileId=%016llx Cookie=%llu", delta, num_entries, space_used, maxcount, RES_READDIRPLUS_REPLY.entries[delta].fileid, RES_READDIRPLUS_REPLY.entries[delta].cookie); } RES_READDIRPLUS_REPLY.entries[0].nextentry = &(RES_READDIRPLUS_REPLY.entries[delta]); if(num_entries > delta + 1) /* not 0 ??? */ RES_READDIRPLUS_REPLY.entries[delta].nextentry = &(RES_READDIRPLUS_REPLY.entries[delta + 1]); else RES_READDIRPLUS_REPLY.entries[delta].nextentry = NULL; delta += 1; } /* if( begin_cookie == 0 ) */ for(i = delta; i < num_entries + delta; i++) { unsigned long needed; /* maxcount is the size with the FH and attributes overhead, * so entryplus3 is used instead of entry3. The data structures * in nfs23.h have funny padding depending on the arch (32 or 64). * We can't get an accurate estimate by simply using * sizeof(entryplus3). */ /* FIXME: There is still a 4 byte over estimate here on x86_64. */ /** @todo Remove cookie offset calculation in readdir and readdirplus (obsoleted) */ needed = sizeof(reference_entry) + NFS3_FHSIZE + ((strlen(dirent_array[i - delta]->name.name) + 3) & ~3); /* if delta == 1 or 2, then "." and ".." have already been added * to the readdirplus reply. */ if (i == delta) { needed += needed*delta /* size of a dir entry in reply */ - ((strlen(dirent_array[i - delta]->name.name) + 3) & ~3)*delta /* size of filename for current entry */ + 4*delta; /* size of "." and ".." filenames in reply */ } if((space_used += needed) > maxcount) { /* If delta != 0, then we already added "." or ".." to the reply. */ if(i == delta && delta == 0) { /* Not enough room to make even a single reply */ /* after successful cache_inode_readdir, dir_pentry may * be read locked */ if (dir_pentry_unlock) V_r(&dir_pentry->lock); if( !CACHE_INODE_KEEP_CONTENT( dir_pentry->policy ) ) cache_inode_release_dirent( dirent_array, num_entries, pclient ) ; Mem_Free((char *)dirent_array); Mem_Free((char *)entry_name_array); Mem_Free((char *)fh3_array); pres->res_readdirplus3.status = NFS3ERR_TOOSMALL; return NFS_REQ_OK; } break; /* Make post traitement */ } /* * Get information specific to this entry */ if((pfsal_handle = cache_inode_get_fsal_handle(dirent_array[i - delta]->pentry, &cache_status_gethandle)) == NULL) { /* after successful cache_inode_readdir, dir_pentry may be * read locked */ if (dir_pentry_unlock) V_r(&dir_pentry->lock); if( !CACHE_INODE_KEEP_CONTENT( dir_pentry->policy ) ) cache_inode_release_dirent( dirent_array, num_entries, pclient ) ; Mem_Free((char *)dirent_array); Mem_Free((char *)entry_name_array); Mem_Free((char *)fh3_array); pres->res_readdirplus3.status = nfs3_Errno(cache_status_gethandle); return NFS_REQ_OK; } /* Now fill in the replyed entryplus3 list */ FSAL_DigestHandle(FSAL_GET_EXP_CTX(pcontext), FSAL_DIGEST_FILEID3, pfsal_handle, (caddr_t) & (RES_READDIRPLUS_REPLY.entries[i].fileid)); FSAL_name2str(&dirent_array[i - delta]->name, entry_name_array[i], FSAL_MAX_NAME_LEN); RES_READDIRPLUS_REPLY.entries[i].name = entry_name_array[i]; LogFullDebug(COMPONENT_NFS_READDIR, "Readdirplus3 -> i=%u num_entries=%u delta=%u " "num_entries + delta - 1=%u end_cookie=%"PRIu64, i, num_entries, delta, num_entries + delta - 1, end_cookie); if(i != num_entries + delta - 1) RES_READDIRPLUS_REPLY.entries[i].cookie = dirent_array[i - delta]->cookie; else RES_READDIRPLUS_REPLY.entries[i].cookie = end_cookie; RES_READDIRPLUS_REPLY.entries[i].name_attributes.attributes_follow = FALSE; RES_READDIRPLUS_REPLY.entries[i].name_handle.handle_follows = FALSE; entry_attr = dirent_array[i - delta]->pentry->attributes; pres->res_readdirplus3.READDIRPLUS3res_u.resok.reply.entries[i].name_handle.post_op_fh3_u.handle.data.data_val = (char *)fh3_array[i]; /* Compute the NFSv3 file handle */ if(nfs3_FSALToFhandle (&pres->res_readdirplus3.READDIRPLUS3res_u.resok.reply.entries[i]. name_handle.post_op_fh3_u.handle, pfsal_handle, pexport) == 0) { /* after successful cache_inode_readdir, dir_pentry may be * read locked */ if (dir_pentry_unlock) V_r(&dir_pentry->lock); if( !CACHE_INODE_KEEP_CONTENT( dir_pentry->policy ) ) cache_inode_release_dirent( dirent_array, num_entries, pclient ) ; Mem_Free((char *)dirent_array); Mem_Free((char *)entry_name_array); Mem_Free((char *)fh3_array); pres->res_readdirplus3.status = NFS3ERR_BADHANDLE; return NFS_REQ_OK; } /* Set PostPoFh3 structure */ pres->res_readdirplus3.READDIRPLUS3res_u.resok.reply.entries[i].name_handle.handle_follows = TRUE; pres->res_readdirplus3.READDIRPLUS3res_u.resok.reply.entries[i].name_handle.post_op_fh3_u.handle.data.data_len = sizeof(file_handle_v3_t); nfs_SetPostOpAttr(pcontext, pexport, dirent_array[i - delta]->pentry, &entry_attr, &(pres->res_readdirplus3.READDIRPLUS3res_u.resok.reply.entries[i].name_attributes)); LogFullDebug(COMPONENT_NFS_READDIR, "Readdirplus3 -> i=%d, num_entries=%d needed=%lu space_used=%lu maxcount=%lu Name=%s FileId=%016llx Cookie=%llu", i, num_entries, needed, space_used, maxcount, dirent_array[i - delta]->name.name, RES_READDIRPLUS_REPLY.entries[i].fileid, RES_READDIRPLUS_REPLY.entries[i].cookie); RES_READDIRPLUS_REPLY.entries[i].nextentry = NULL; if(i != 0) RES_READDIRPLUS_REPLY.entries[i - 1].nextentry = &(RES_READDIRPLUS_REPLY.entries[i]); } pres->res_readdirplus3.READDIRPLUS3res_u.resok.reply.eof = FALSE; } nfs_SetPostOpAttr(pcontext, pexport, dir_pentry, &dir_attr, &(pres->res_readdirplus3.READDIRPLUS3res_u.resok.dir_attributes)); memcpy(pres->res_readdirplus3.READDIRPLUS3res_u.resok.cookieverf, cookie_verifier, sizeof(cookieverf3)); pres->res_readdirplus3.status = NFS3_OK; if((eod_met == END_OF_DIR) && (i == num_entries + delta)) { /* End of directory */ LogFullDebug(COMPONENT_NFS_READDIR, "============================================================> EOD MET !!!!!!"); pres->res_readdirplus3.READDIRPLUS3res_u.resok.reply.eof = TRUE; } else pres->res_readdirplus3.READDIRPLUS3res_u.resok.reply.eof = FALSE; nfs_SetPostOpAttr(pcontext, pexport, dir_pentry, &dir_attr, &(pres->res_readdirplus3.READDIRPLUS3res_u.resok.dir_attributes)); memcpy(pres->res_readdirplus3.READDIRPLUS3res_u.resok.cookieverf, cookie_verifier, sizeof(cookieverf3)); LogFullDebug(COMPONENT_NFS_READDIR, "============================================================"); /* after successful cache_inode_readdir, dir_pentry may be * read locked */ if (dir_pentry_unlock) V_r(&dir_pentry->lock); /* Free the memory */ if( !CACHE_INODE_KEEP_CONTENT( dir_pentry->policy ) ) cache_inode_release_dirent( dirent_array, num_entries, pclient ) ; Mem_Free((char *)dirent_array); return NFS_REQ_OK; } /* If we are here, there was an error */ /* after successful cache_inode_readdir, dir_pentry may be * read locked */ if (dir_pentry_unlock) V_r(&dir_pentry->lock); /* Free the memory */ if( !CACHE_INODE_KEEP_CONTENT( dir_pentry->policy ) ) cache_inode_release_dirent( dirent_array, num_entries, pclient ) ; Mem_Free((char *)dirent_array); Mem_Free((char *)entry_name_array); Mem_Free((char *)fh3_array); /* Is this a retryable error */ if(nfs_RetryableError(cache_status)) return NFS_REQ_DROP; /* Set failed status */ nfs_SetFailedStatus(pcontext, pexport, NFS_V3, cache_status, NULL, &pres->res_readdirplus3.status, dir_pentry, &(pres->res_readdirplus3.READDIRPLUS3res_u.resfail.dir_attributes), NULL, NULL, NULL, NULL, NULL, NULL); return NFS_REQ_OK; } /* nfs3_Readdirplus */