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comparison usr/src/cmd/lvm/rpc.metamhd/mhd_local.h @ 0:c9caec207d52 b86

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Initial porting based on b86
author Koji Uno <koji.uno@sun.com>
date Tue, 02 Jun 2009 18:56:50 +0900
parents
children 1a15d5aaf794
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-1:000000000000 0:c9caec207d52
1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License, Version 1.0 only
6 * (the "License"). You may not use this file except in compliance
7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22
23 /*
24 * Copyright 2005 Sun Microsystems, Inc. All rights reserved.
25 * Use is subject to license terms.
26 */
27
28 #ifndef _MHD_LOCAL_H
29 #define _MHD_LOCAL_H
30
31 #pragma ident "@(#)mhd_local.h 2.4 05/06/29 SMI"
32
33 #include <stdio.h>
34 #include <stdlib.h>
35 #include <fcntl.h>
36 #include <errno.h>
37 #include <string.h>
38 #include <unistd.h>
39 #include <assert.h>
40 #include <stdarg.h>
41 #include <ctype.h>
42 #include <sys/types.h>
43 #include <sys/stat.h>
44 #include <sys/sysmacros.h>
45 #include <sys/mkdev.h>
46 #include <sys/time.h>
47 #include <sys/dkio.h>
48 #include <sys/vtoc.h>
49
50 #include <metamhd.h>
51 #include <thread.h>
52
53 #ifdef __cplusplus
54 extern "C" {
55 #endif
56
57 /*
58 * millisecond time
59 */
60 typedef u_longlong_t mhd_msec_t;
61
62 /*
63 * drive record
64 */
65 typedef uint_t mhd_state_t;
66 #define DRIVE_IDLE 0x0000 /* exclusive state */
67 #define DRIVE_ERRORED 0x0001 /* exclusive state */
68 #define DRIVE_IDLING 0x0002 /* exclusive state */
69 #define DRIVE_RESERVING 0x0004 /* exclusive state */
70 #define DRIVE_FAILFASTING 0x0008 /* exclusive state */
71 #define DRIVE_RELEASING 0x0010 /* exclusive state */
72 #define DRIVE_EXCLUSIVE_STATES 0x00ff /* all exclusive states */
73 #define DRIVE_PROBING 0x0100
74 #define DRIVE_STATUSING 0x0200
75 #define DRIVE_SERIALING 0x0400
76 #define DRIVE_VTOCING 0x0800
77 #define DRIVE_CINFOING 0x1000
78 #define DRIVE_IDENTING (DRIVE_SERIALING | DRIVE_VTOCING | \
79 DRIVE_CINFOING)
80 #define DRIVE_IS_IDLE(dp) (((dp)->dr_state == DRIVE_IDLE) || \
81 ((dp)->dr_state == DRIVE_ERRORED))
82 typedef struct mhd_drive {
83 struct mhd_drive_set *dr_sp; /* back pointer to set */
84 char *dr_rname; /* raw device name */
85 char *dr_rname0; /* slice 0 raw device name */
86 cond_t dr_cv; /* synchronization */
87 thread_t dr_thread; /* daemon thread */
88 int dr_fd; /* open slice 0 */
89 mhd_state_t dr_state; /* drive state */
90 int dr_errnum; /* errno for DRIVE_ERRORED */
91 mhd_msec_t dr_time; /* last successful probe time */
92 mhd_drive_id_t dr_drive_id; /* unique drive identifier */
93 } mhd_drive_t;
94
95 /*
96 * drive list
97 */
98 typedef struct mhd_drive_list {
99 mhd_drive_t **dl_drives; /* allocated list */
100 size_t dl_alloc; /* amount allocated */
101 size_t dl_ndrive; /* amount used */
102 } mhd_drive_list_t;
103 #define MHD_NULL_LIST { NULL, 0, 0 }
104
105 /*
106 * drive set
107 */
108 typedef struct mhd_drive_set {
109 char *sr_name; /* set name */
110 mutex_t sr_mx; /* set mutex */
111 cond_t sr_cv; /* synchronization */
112 mhd_opts_t sr_options; /* common options */
113 mhd_mhiargs_t sr_timeouts; /* reservation timeouts */
114 mhd_ff_mode_t sr_ff_mode; /* failfast mode */
115 int sr_ff; /* failfast device descriptor */
116 mhd_drive_list_t sr_drives; /* drives in set */
117 } mhd_drive_set_t;
118
119 /*
120 * debug stuff
121 */
122 #define MHD_DEBUG 0
123 #ifdef MHD_DEBUG
124 extern int mhd_debug;
125 #define MHDPRINTF(n) if (mhd_debug > 0) mhd_eprintf n
126 #define MHDPRINTF1(n) if (mhd_debug > 1) mhd_eprintf n
127 #define MHDPRINTF2(n) if (mhd_debug > 2) mhd_eprintf n
128 #else /* ! MHD_DEBUG */
129 #define MHDPRINTF(n)
130 #define MHDPRINTF1(n)
131 #define MHDPRINTF2(n)
132 #endif /* ! MHD_DEBUG */
133
134 /*
135 * extern functions
136 */
137 /* mhd_drive.c */
138 extern const mhd_drive_list_t mhd_null_list;
139 extern void mhd_add_drive(mhd_drive_list_t *dlp, mhd_drive_t *dp);
140 extern void mhd_del_drive(mhd_drive_list_t *dlp, mhd_drive_t *dp);
141 extern void mhd_free_list(mhd_drive_list_t *dlp);
142 extern int mhd_state(mhd_drive_t *dp, mhd_state_t new_state,
143 mhd_error_t *mhep);
144 extern int mhd_state_set(mhd_drive_t *dp, mhd_state_t new_state,
145 mhd_error_t *mhep);
146 extern int mhd_idle(mhd_drive_t *dp, mhd_error_t *mhep);
147 extern mhd_drive_t *mhd_create_drive(mhd_drive_set_t *defaultsp,
148 char *rname, int *fdp, mhd_error_t *mhep);
149 extern int mhd_create_drives(char *path, mhd_error_t *mhep);
150
151 /* mhd_error.c */
152 extern void mhd_clrerror(mhd_error_t *mhep);
153 extern int mhd_error(mhd_error_t *mhep, int errnum, char *name);
154 /*PRINTFLIKE2*/
155 extern void mhde_perror(mhd_error_t *mhep, const char *fmt, ...);
156 /*PRINTFLIKE1*/
157 extern void mhd_perror(const char *fmt, ...);
158 /*PRINTFLIKE1*/
159 extern void mhd_eprintf(const char *fmt, ...);
160
161 /* mhd_failfast.c */
162 extern int mhd_ff_disarm(mhd_drive_set_t *sp, mhd_error_t *mhep);
163 extern int mhd_ff_open(mhd_drive_set_t *sp, mhd_error_t *mhep);
164 extern int mhd_ff_close(mhd_drive_set_t *sp, mhd_error_t *mhep);
165 extern int mhd_ff_rearm(mhd_drive_set_t *sp, mhd_error_t *mhep);
166 extern void mhd_ff_die(mhd_drive_set_t *sp);
167 extern void mhd_ff_check(mhd_drive_set_t *sp);
168
169 /* mhd_init.c */
170 extern void mhd_exit(int eval);
171 extern int mhd_init(struct svc_req *rqstp, int amode,
172 mhd_error_t *mhep);
173
174 /* mhd_ioctl.c */
175 extern int tk_own(mhd_set_t *mhsp, mhd_error_t *mhep);
176 extern int rel_own(mhd_set_t *mhsp, mhd_error_t *mhep);
177 extern int get_status(mhd_status_args_t *argsp,
178 mhd_status_res_t *resp);
179
180 /* mhd_mem.c */
181 extern void *Malloc(size_t s);
182 extern void *Zalloc(size_t s);
183 extern void *Realloc(void *p, size_t s);
184 extern void *Calloc(size_t n, size_t s);
185 extern char *Strdup(const char *p);
186 extern void Free(void *p);
187
188 /* mhd_set.c */
189 extern void mhd_add_drive_to_set(mhd_drive_set_t *sp,
190 mhd_drive_t *dp);
191 extern void mhd_del_drive_from_set(mhd_drive_t *dp);
192 extern mhd_drive_set_t *mhd_create_set(mhd_set_t *mhsp, mhd_opts_t options,
193 mhd_drive_list_t *dlp, mhd_error_t *mhep);
194 extern mhd_drive_t *mhd_find_drive(char *rname);
195 extern int mhd_list_drives(char *path, mhd_did_flags_t flags,
196 mhd_list_res_t *resultsp, mhd_error_t *mhep);
197 extern int mhd_release_drives(mhd_set_t *mhsp, mhd_opts_t options,
198 mhd_error_t *mhep);
199 extern int mhd_reserve_drives(mhd_set_t *mhsp,
200 mhd_mhiargs_t *timeoutp, mhd_ff_mode_t ff_mode,
201 mhd_opts_t options, mhd_error_t *mhep);
202 extern int mhd_status_drives(mhd_set_t *mhsp, mhd_opts_t options,
203 mhd_drive_status_t **status, mhd_error_t *mhep);
204
205 /* mhd_synch.c */
206 extern void mhd_cv_init(cond_t *cvp);
207 extern void mhd_cv_destroy(cond_t *cvp);
208 extern void mhd_cv_wait(cond_t *cvp, mutex_t *mp);
209 extern void mhd_cv_timedwait(cond_t *cvp, mutex_t *mp,
210 mhd_msec_t to);
211 extern void mhd_cv_broadcast(cond_t *cvp);
212 extern void mhd_mx_init(mutex_t *mp);
213 extern void mhd_mx_destroy(mutex_t *mp);
214 extern void mhd_mx_lock(mutex_t *mp);
215 extern void mhd_mx_unlock(mutex_t *mp);
216 extern void mhd_rw_rdlock(rwlock_t *rwlp);
217 extern void mhd_rw_wrlock(rwlock_t *rwlp);
218 extern void mhd_rw_unlock(rwlock_t *rwlp);
219
220 /* mhd_time.c */
221 extern mhd_msec_t mhd_time();
222
223 #ifdef __cplusplus
224 }
225 #endif
226
227 #endif /* _MHD_LOCAL_H */