diff options
Diffstat (limited to 'sys/dev/raidframe/rf_dagflags.h')
| -rw-r--r-- | sys/dev/raidframe/rf_dagflags.h | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/sys/dev/raidframe/rf_dagflags.h b/sys/dev/raidframe/rf_dagflags.h new file mode 100644 index 0000000..b0777bd --- /dev/null +++ b/sys/dev/raidframe/rf_dagflags.h @@ -0,0 +1,68 @@ +/* $FreeBSD$ */ +/* $NetBSD: rf_dagflags.h,v 1.3 1999/02/05 00:06:08 oster Exp $ */ +/* + * Copyright (c) 1995 Carnegie-Mellon University. + * All rights reserved. + * + * Author: Mark Holland + * + * Permission to use, copy, modify and distribute this software and + * its documentation is hereby granted, provided that both the copyright + * notice and this permission notice appear in all copies of the + * software, derivative works or modified versions, and any portions + * thereof, and that both notices appear in supporting documentation. + * + * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" + * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND + * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. + * + * Carnegie Mellon requests users of this software to return to + * + * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU + * School of Computer Science + * Carnegie Mellon University + * Pittsburgh PA 15213-3890 + * + * any improvements or extensions that they make and grant Carnegie the + * rights to redistribute these changes. + */ + +/************************************************************************************** + * + * dagflags.h -- flags that can be given to DoAccess + * I pulled these out of dag.h because routines that call DoAccess may need these flags, + * but certainly do not need the declarations related to the DAG data structures. + * + **************************************************************************************/ + + +#ifndef _RF__RF_DAGFLAGS_H_ +#define _RF__RF_DAGFLAGS_H_ + +/* + * Bitmasks for the "flags" parameter (RF_RaidAccessFlags_t) used + * by DoAccess, SelectAlgorithm, and the DAG creation routines. + * + * If USE_DAG or USE_ASM is specified, neither the DAG nor the ASM + * will be modified, which means that you can't SUPRESS if you + * specify USE_DAG. + */ + +#define RF_DAG_FLAGS_NONE 0 /* no flags */ +#define RF_DAG_SUPPRESS_LOCKS (1<<0) /* supress all stripe locks in + * the DAG */ +#define RF_DAG_RETURN_ASM (1<<1) /* create an ASM and return it + * instead of freeing it */ +#define RF_DAG_RETURN_DAG (1<<2) /* create a DAG and return it + * instead of freeing it */ +#define RF_DAG_NONBLOCKING_IO (1<<3) /* cause DoAccess to be + * non-blocking */ +#define RF_DAG_ACCESS_COMPLETE (1<<4) /* the access is complete */ +#define RF_DAG_DISPATCH_RETURNED (1<<5) /* used to handle the case + * where the dag invokes no + * I/O */ +#define RF_DAG_TEST_ACCESS (1<<6) /* this access came through + * rf_ioctl instead of + * rf_strategy */ + +#endif /* !_RF__RF_DAGFLAGS_H_ */ |
