2 * Copyright 2000, International Business Machines Corporation and others.
5 * This software has been released under the terms of the IBM Public
6 * License. For details, see the LICENSE file in the top-level source
7 * directory or online at http://www.openafs.org/dl/license10.html
9 * Portions Copyright (c) 2006-2008 Sine Nomine Associates
15 Institution: The Information Technology Center, Carnegie-Mellon University
23 #define FSYNC_PROTO_VERSION 2
27 * FSYNC command codes.
30 FSYNC_VOL_ON = SYNC_COM_CODE_DECL(0), /**< bring Volume online */
31 FSYNC_VOL_OFF = SYNC_COM_CODE_DECL(1), /**< take Volume offline */
32 FSYNC_VOL_LISTVOLUMES = SYNC_COM_CODE_DECL(2), /**< Update local volume list */
33 FSYNC_VOL_NEEDVOLUME = SYNC_COM_CODE_DECL(3), /**< Put volume in whatever mode (offline, or whatever)
34 * best fits the attachment mode provided in reason */
35 FSYNC_VOL_MOVE = SYNC_COM_CODE_DECL(4), /**< Generate temporary relocation information
36 * for this volume to another site, to be used
37 * if this volume disappears */
38 FSYNC_VOL_BREAKCBKS = SYNC_COM_CODE_DECL(5), /**< Break all the callbacks on this volume */
39 FSYNC_VOL_DONE = SYNC_COM_CODE_DECL(6), /**< Done with this volume (used after a delete).
40 * Don't put online, but remove from list */
41 FSYNC_VOL_QUERY = SYNC_COM_CODE_DECL(7), /**< query the volume state */
42 FSYNC_VOL_QUERY_HDR = SYNC_COM_CODE_DECL(8), /**< query the volume disk data structure */
43 FSYNC_VOL_QUERY_VOP = SYNC_COM_CODE_DECL(9), /**< query the volume for pending vol op info */
44 FSYNC_VOL_STATS_GENERAL = SYNC_COM_CODE_DECL(10), /**< query the general volume package statistics */
45 FSYNC_VOL_STATS_VICEP = SYNC_COM_CODE_DECL(11), /**< query the per-partition volume package stats */
46 FSYNC_VOL_STATS_HASH = SYNC_COM_CODE_DECL(12), /**< query the per hash-chain volume package stats */
47 FSYNC_VOL_STATS_HDR = SYNC_COM_CODE_DECL(13), /**< query the volume header cache statistics */
48 FSYNC_VOL_STATS_VLRU = SYNC_COM_CODE_DECL(14), /**< query the VLRU statistics */
49 FSYNC_VOL_ATTACH = SYNC_COM_CODE_DECL(15), /**< Force volume online */
50 FSYNC_VOL_FORCE_ERROR = SYNC_COM_CODE_DECL(16), /**< force volume into error state */
51 FSYNC_VOL_LEAVE_OFF = SYNC_COM_CODE_DECL(17), /**< end vol op, but leave volume offline */
52 FSYNC_VOL_QUERY_VNODE = SYNC_COM_CODE_DECL(18), /**< query vnode state */
58 enum FSYNCReasonCode {
59 FSYNC_WHATEVER = SYNC_REASON_CODE_DECL(0), /**< XXXX */
60 FSYNC_SALVAGE = SYNC_REASON_CODE_DECL(1), /**< volume is being salvaged */
61 FSYNC_MOVE = SYNC_REASON_CODE_DECL(2), /**< volume is being moved */
62 FSYNC_OPERATOR = SYNC_REASON_CODE_DECL(3), /**< operator forced volume offline */
63 FSYNC_EXCLUSIVE = SYNC_REASON_CODE_DECL(4), /**< somebody else has the volume offline */
64 FSYNC_UNKNOWN_VOLID = SYNC_REASON_CODE_DECL(5), /**< volume id not known by fileserver */
65 FSYNC_HDR_NOT_ATTACHED = SYNC_REASON_CODE_DECL(6), /**< volume header not currently attached */
66 FSYNC_NO_PENDING_VOL_OP = SYNC_REASON_CODE_DECL(7), /**< no volume operation pending */
67 FSYNC_VOL_PKG_ERROR = SYNC_REASON_CODE_DECL(8), /**< error in the volume package */
68 FSYNC_UNKNOWN_VNID = SYNC_REASON_CODE_DECL(9), /**< vnode id not known by fileserver */
71 /* FSYNC response codes */
73 /* FSYNC flag codes */
81 * fssync protocol volume operation request message.
83 typedef struct FSSYNC_VolOp_hdr {
84 afs_uint32 volume; /**< volume id associated with request */
85 char partName[16]; /**< partition name, e.g. /vicepa */
88 typedef struct FSSYNC_VolOp_command {
89 SYNC_command_hdr * hdr;
90 FSSYNC_VolOp_hdr * vop;
92 struct offlineInfo * v;
93 struct offlineInfo * volumes;
94 } FSSYNC_VolOp_command;
97 * volume operation information node.
99 * @note this structure is attached to a struct Volume to signify that
100 * a volume operation is in-progress.
103 * @see VRegisterVolOp_r
104 * @see VDeregisterVolOp_r
106 typedef struct FSSYNC_VolOp_info {
107 SYNC_command_hdr com;
108 FSSYNC_VolOp_hdr vop;
113 * fssync protocol volume package statistics request node.
115 typedef struct FSSYNC_StatsOp_hdr {
117 afs_uint32 vlru_generation; /**< vlru generation id */
118 afs_uint32 hash_bucket; /**< volume hash bucket */
119 char partName[16]; /**< partition name */
121 } FSSYNC_StatsOp_hdr;
123 typedef struct FSSYNC_StatsOp_command {
124 SYNC_command_hdr * hdr;
125 FSSYNC_StatsOp_hdr * sop;
127 } FSSYNC_StatsOp_command;
130 * fssync protocol vnode query request message.
132 typedef struct FSSYNC_VnQry_hdr {
133 afs_uint32 volume; /**< volume id */
134 afs_uint32 vnode; /**< vnode id */
135 afs_uint32 unique; /**< uniqifier */
136 afs_uint32 spare; /**< reserved for future use */
137 char partName[16]; /**< partition name */
141 #define FSSYNC_IN_PORT 2040
142 #define FSSYNC_UN_PATH "fssync.sock"
143 #define FSSYNC_ENDPOINT_DECL SYNC_ENDPOINT_DECL(FSSYNC_IN_PORT, FSSYNC_UN_PATH)
148 extern void FSYNC_Init(void);
151 * fsync client interfaces
153 extern void FSYNC_clientFinis(void);
154 extern int FSYNC_clientInit(void);
155 extern int FSYNC_clientChildProcReconnect(void);
157 /* generic low-level interface */
158 extern afs_int32 FSYNC_askfs(SYNC_command * com, SYNC_response * res);
160 /* generic higher-level interface */
161 extern afs_int32 FSYNC_GenericOp(void * ext_hdr, size_t ext_len,
162 int command, int reason,
163 SYNC_response * res);
165 /* volume operations interface */
166 extern afs_int32 FSYNC_VolOp(VolumeId volume, char *partName, int com, int reason,
167 SYNC_response * res);
169 /* statistics query interface */
170 extern afs_int32 FSYNC_StatsOp(FSSYNC_StatsOp_hdr * scom, int command, int reason,
171 SYNC_response * res_in);
173 #endif /* __fssync_h_ */