/* -*- mode: c; c-basic-offset: 8; -*- * vim: noexpandtab sw=8 ts=8 sts=0: * * ocfs2_lockid.h * * Defines OCFS2 lockid bits. * * Copyright (C) 2002, 2005 Oracle. All rights reserved. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This program 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 GNU * General Public License for more details. * * You should have received a copy of the GNU General Public * License along with this program; if not, write to the * Free Software Foundation, Inc., 59 Temple Place - Suite 330, * Boston, MA 021110-1307, USA. */ #ifndef OCFS2_LOCKID_H #define OCFS2_LOCKID_H /* lock ids are made up in the following manner: * name[0] --> type * name[1-6] --> 6 pad characters, reserved for now * name[7-22] --> block number, expressed in hex as 16 chars * name[23-30] --> i_generation, expressed in hex 8 chars * name[31] --> '\0' */ #define OCFS2_LOCK_ID_MAX_LEN 32 #define OCFS2_LOCK_ID_PAD "000000" #define OCFS2_DENTRY_LOCK_INO_START 18 enum ocfs2_lock_type { OCFS2_LOCK_TYPE_META = 0, OCFS2_LOCK_TYPE_DATA, OCFS2_LOCK_TYPE_SUPER, OCFS2_LOCK_TYPE_RENAME, OCFS2_LOCK_TYPE_RW, OCFS2_LOCK_TYPE_DENTRY, OCFS2_LOCK_TYPE_OPEN, OCFS2_LOCK_TYPE_FLOCK, OCFS2_LOCK_TYPE_QINFO, OCFS2_LOCK_TYPE_NFS_SYNC, OCFS2_LOCK_TYPE_ORPHAN_SCAN, OCFS2_LOCK_TYPE_REFCOUNT, OCFS2_NUM_LOCK_TYPES }; static inline char ocfs2_lock_type_char(enum ocfs2_lock_type type) { char c; switch (type) { case OCFS2_LOCK_TYPE_META: c = 'M'; break; case OCFS2_LOCK_TYPE_DATA: c = 'D'; break; case OCFS2_LOCK_TYPE_SUPER: c = 'S'; break; case OCFS2_LOCK_TYPE_RENAME: c = 'R'; break; case OCFS2_LOCK_TYPE_RW: c = 'W'; break; case OCFS2_LOCK_TYPE_DENTRY: c = 'N'; break; case OCFS2_LOCK_TYPE_OPEN: c = 'O'; break; case OCFS2_LOCK_TYPE_FLOCK: c = 'F'; break; case OCFS2_LOCK_TYPE_QINFO: c = 'Q'; break; case OCFS2_LOCK_TYPE_NFS_SYNC: c = 'Y'; break; case OCFS2_LOCK_TYPE_ORPHAN_SCAN: c = 'P'; break; case OCFS2_LOCK_TYPE_REFCOUNT: c = 'T'; break; default: c = '\0'; } return c; } static char *ocfs2_lock_type_strings[] = { [OCFS2_LOCK_TYPE_META] = "Meta", [OCFS2_LOCK_TYPE_DATA] = "Data", [OCFS2_LOCK_TYPE_SUPER] = "Super", [OCFS2_LOCK_TYPE_RENAME] = "Rename", /* Need to differntiate from [R]ename.. serializing writes is the * important job it does, anyway. */ [OCFS2_LOCK_TYPE_RW] = "Write/Read", [OCFS2_LOCK_TYPE_DENTRY] = "Dentry", [OCFS2_LOCK_TYPE_OPEN] = "Open", [OCFS2_LOCK_TYPE_FLOCK] = "Flock", [OCFS2_LOCK_TYPE_QINFO] = "Quota", [OCFS2_LOCK_TYPE_NFS_SYNC] = "NFSSync", [OCFS2_LOCK_TYPE_ORPHAN_SCAN] = "OrphanScan", [OCFS2_LOCK_TYPE_REFCOUNT] = "Refcount", }; static inline const char *ocfs2_lock_type_string(enum ocfs2_lock_type type) { #ifdef __KERNEL__ BUG_ON(type >= OCFS2_NUM_LOCK_TYPES); #endif return ocfs2_lock_type_strings[type]; } #endif /* OCFS2_LOCKID_H */ 6364cd4eaa362d7ff1777e88ddf501602'>function/storage_common.c
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