/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*- * vim:expandtab:shiftwidth=8:tabstop=8: * * lustre/include/linux/lustre_req_layout.h * Lustre Metadata Target (mdt) request handler * * Copyright (c) 2006 Cluster File Systems, Inc. * Author: Nikita Danilov * * This file is part of the Lustre file system, http://www.lustre.org * Lustre is a trademark of Cluster File Systems, Inc. * * You may have signed or agreed to another license before downloading * this software. If so, you are bound by the terms and conditions * of that agreement, and the following does not apply to you. See the * LICENSE file included with this distribution for more information. * * If you did not agree to a different license, then this copy of Lustre * is open source software; you can redistribute it and/or modify it * under the terms of version 2 of the GNU General Public License as * published by the Free Software Foundation. * * In either case, Lustre is distributed in the hope that it will be * useful, but WITHOUT ANY WARRANTY; without even the implied warranty * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * license text for more details. */ #ifndef _LUSTRE_REQ_LAYOUT_H__ #define _LUSTRE_REQ_LAYOUT_H__ struct req_msg_field; struct req_format; struct req_capsule; struct ptlrpc_request; enum req_location { RCL_CLIENT, RCL_SERVER, RCL_NR }; struct req_capsule { struct ptlrpc_request *rc_req; const struct req_format *rc_fmt; __u32 rc_swabbed; enum req_location rc_loc; int *rc_area; }; enum { /* * Maximal number of fields (buffers) in a request message. */ REQ_MAX_FIELD_NR = 8 }; #if !defined(__REQ_LAYOUT_USER__) /* struct ptlrpc_request, lustre_msg* */ #include void req_capsule_init(struct req_capsule *pill, struct ptlrpc_request *req, enum req_location location, int *area); void req_capsule_fini(struct req_capsule *pill); void req_capsule_set(struct req_capsule *pill, const struct req_format *fmt); int req_capsule_pack(struct req_capsule *pill); void *req_capsule_client_get(struct req_capsule *pill, const struct req_msg_field *field); void *req_capsule_server_get(struct req_capsule *pill, const struct req_msg_field *field); const void *req_capsule_other_get(struct req_capsule *pill, const struct req_msg_field *field); void req_capsule_set_size(const struct req_capsule *pill, const struct req_msg_field *field, enum req_location loc, int size); int req_capsule_get_size(const struct req_capsule *pill, const struct req_msg_field *field, enum req_location loc); void req_capsule_extend(struct req_capsule *pill, const struct req_format *fmt); int req_capsule_has_field(const struct req_capsule *pill, const struct req_msg_field *field, enum req_location loc); int req_capsule_field_present(const struct req_capsule *pill, const struct req_msg_field *field, enum req_location loc); int req_capsule_shrink(const struct req_capsule *pill, const struct req_msg_field *field, const unsigned int newlen, const int adjust, const int move_data); int req_layout_init(void); void req_layout_fini(void); /* __REQ_LAYOUT_USER__ */ #endif extern const struct req_format RQF_SEQ_QUERY; extern const struct req_format RQF_FLD_QUERY; extern const struct req_format RQF_MDS_GETSTATUS; extern const struct req_format RQF_MDS_STATFS; extern const struct req_format RQF_MDS_SYNC; extern const struct req_format RQF_MDS_GETXATTR; extern const struct req_format RQF_MDS_SETXATTR; extern const struct req_format RQF_MDS_GETATTR; extern const struct req_format RQF_MDS_CLOSE; extern const struct req_format RQF_MDS_PIN; extern const struct req_format RQF_MDS_CONNECT; extern const struct req_format RQF_MDS_DISCONNECT; extern const struct req_format RQF_MDS_SET_INFO; extern const struct req_format RQF_MDS_READPAGE; extern const struct req_format RQF_MDS_WRITEPAGE; extern const struct req_format RQF_MDS_IS_SUBDIR; extern const struct req_format RQF_MDS_DONE_WRITING; /* * This is format of direct (non-intent) MDS_GETATTR_NAME request. */ extern const struct req_format RQF_MDS_GETATTR_NAME; extern const struct req_format RQF_MDS_REINT; extern const struct req_format RQF_MDS_REINT_CREATE; extern const struct req_format RQF_MDS_REINT_CREATE_RMT_ACL; extern const struct req_format RQF_MDS_REINT_CREATE_SLAVE; extern const struct req_format RQF_MDS_REINT_CREATE_SYM; extern const struct req_format RQF_MDS_REINT_OPEN; extern const struct req_format RQF_MDS_REINT_UNLINK; extern const struct req_format RQF_MDS_REINT_LINK; extern const struct req_format RQF_MDS_REINT_RENAME; extern const struct req_format RQF_MDS_REINT_SETATTR; extern const struct req_format RQF_LDLM_ENQUEUE; extern const struct req_format RQF_LDLM_INTENT; extern const struct req_format RQF_LDLM_INTENT_GETATTR; extern const struct req_format RQF_LDLM_INTENT_OPEN; extern const struct req_format RQF_LDLM_INTENT_CREATE; extern const struct req_format RQF_LDLM_INTENT_UNLINK; extern const struct req_msg_field RMF_PTLRPC_BODY; extern const struct req_msg_field RMF_MDT_BODY; extern const struct req_msg_field RMF_MDT_EPOCH; extern const struct req_msg_field RMF_OBD_STATFS; extern const struct req_msg_field RMF_NAME; extern const struct req_msg_field RMF_SYMTGT; extern const struct req_msg_field RMF_TGTUUID; extern const struct req_msg_field RMF_CLUUID; extern const struct req_msg_field RMF_SETINFO_VAL; extern const struct req_msg_field RMF_SETINFO_KEY; /* * connection handle received in MDS_CONNECT request. */ extern const struct req_msg_field RMF_CONN; extern const struct req_msg_field RMF_CONNECT_DATA; extern const struct req_msg_field RMF_DLM_REQ; extern const struct req_msg_field RMF_DLM_REP; extern const struct req_msg_field RMF_LDLM_INTENT; extern const struct req_msg_field RMF_MDT_MD; extern const struct req_msg_field RMF_REC_CREATE; extern const struct req_msg_field RMF_REC_LINK; extern const struct req_msg_field RMF_REC_UNLINK; extern const struct req_msg_field RMF_REC_RENAME; extern const struct req_msg_field RMF_REC_SETATTR; extern const struct req_msg_field RMF_EADATA; extern const struct req_msg_field RMF_ACL; extern const struct req_msg_field RMF_LOGCOOKIES; extern const struct req_msg_field RMF_REINT_OPC; extern const struct req_msg_field RMF_CAPA1; extern const struct req_msg_field RMF_CAPA2; /* seq-mgr fields */ extern const struct req_msg_field RMF_SEQ_OPC; extern const struct req_msg_field RMF_SEQ_RANGE; /* FLD fields */ extern const struct req_msg_field RMF_FLD_OPC; extern const struct req_msg_field RMF_FLD_MDFLD; #endif /* _LUSTRE_REQ_LAYOUT_H__ */