1 /* AFS Volume Location Service client
3 * Copyright (C) 2002 Red Hat, Inc. All Rights Reserved.
4 * Written by David Howells (dhowells@redhat.com)
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version
9 * 2 of the License, or (at your option) any later version.
12 #include <linux/gfp.h>
13 #include <linux/init.h>
14 #include <linux/sched.h>
18 * map volume locator abort codes to error codes
20 static int afs_vl_abort_to_error(u32 abort_code)
22 _enter("%u", abort_code);
25 case AFSVL_IDEXIST: return -EEXIST;
26 case AFSVL_IO: return -EREMOTEIO;
27 case AFSVL_NAMEEXIST: return -EEXIST;
28 case AFSVL_CREATEFAIL: return -EREMOTEIO;
29 case AFSVL_NOENT: return -ENOMEDIUM;
30 case AFSVL_EMPTY: return -ENOMEDIUM;
31 case AFSVL_ENTDELETED: return -ENOMEDIUM;
32 case AFSVL_BADNAME: return -EINVAL;
33 case AFSVL_BADINDEX: return -EINVAL;
34 case AFSVL_BADVOLTYPE: return -EINVAL;
35 case AFSVL_BADSERVER: return -EINVAL;
36 case AFSVL_BADPARTITION: return -EINVAL;
37 case AFSVL_REPSFULL: return -EFBIG;
38 case AFSVL_NOREPSERVER: return -ENOENT;
39 case AFSVL_DUPREPSERVER: return -EEXIST;
40 case AFSVL_RWNOTFOUND: return -ENOENT;
41 case AFSVL_BADREFCOUNT: return -EINVAL;
42 case AFSVL_SIZEEXCEEDED: return -EINVAL;
43 case AFSVL_BADENTRY: return -EINVAL;
44 case AFSVL_BADVOLIDBUMP: return -EINVAL;
45 case AFSVL_IDALREADYHASHED: return -EINVAL;
46 case AFSVL_ENTRYLOCKED: return -EBUSY;
47 case AFSVL_BADVOLOPER: return -EBADRQC;
48 case AFSVL_BADRELLOCKTYPE: return -EINVAL;
49 case AFSVL_RERELEASE: return -EREMOTEIO;
50 case AFSVL_BADSERVERFLAG: return -EINVAL;
51 case AFSVL_PERM: return -EACCES;
52 case AFSVL_NOMEM: return -EREMOTEIO;
54 return afs_abort_to_error(abort_code);
59 * deliver reply data to a VL.GetEntryByXXX call
61 static int afs_deliver_vl_get_entry_by_xxx(struct afs_call *call)
63 struct afs_cache_vlocation *entry;
70 ret = afs_transfer_reply(call);
74 /* unmarshall the reply once we've received all of it */
78 for (loop = 0; loop < 64; loop++)
79 entry->name[loop] = ntohl(*bp++);
80 entry->name[loop] = 0;
84 entry->nservers = ntohl(*bp++);
86 for (loop = 0; loop < 8; loop++)
87 entry->servers[loop].s_addr = *bp++;
89 bp += 8; /* partition IDs */
91 for (loop = 0; loop < 8; loop++) {
93 entry->srvtmask[loop] = 0;
94 if (tmp & AFS_VLSF_RWVOL)
95 entry->srvtmask[loop] |= AFS_VOL_VTM_RW;
96 if (tmp & AFS_VLSF_ROVOL)
97 entry->srvtmask[loop] |= AFS_VOL_VTM_RO;
98 if (tmp & AFS_VLSF_BACKVOL)
99 entry->srvtmask[loop] |= AFS_VOL_VTM_BAK;
102 entry->vid[0] = ntohl(*bp++);
103 entry->vid[1] = ntohl(*bp++);
104 entry->vid[2] = ntohl(*bp++);
108 tmp = ntohl(*bp++); /* flags */
110 if (tmp & AFS_VLF_RWEXISTS)
111 entry->vidmask |= AFS_VOL_VTM_RW;
112 if (tmp & AFS_VLF_ROEXISTS)
113 entry->vidmask |= AFS_VOL_VTM_RO;
114 if (tmp & AFS_VLF_BACKEXISTS)
115 entry->vidmask |= AFS_VOL_VTM_BAK;
119 _leave(" = 0 [done]");
124 * VL.GetEntryByName operation type
126 static const struct afs_call_type afs_RXVLGetEntryByName = {
127 .name = "VL.GetEntryByName",
128 .deliver = afs_deliver_vl_get_entry_by_xxx,
129 .abort_to_error = afs_vl_abort_to_error,
130 .destructor = afs_flat_call_destructor,
134 * VL.GetEntryById operation type
136 static const struct afs_call_type afs_RXVLGetEntryById = {
137 .name = "VL.GetEntryById",
138 .deliver = afs_deliver_vl_get_entry_by_xxx,
139 .abort_to_error = afs_vl_abort_to_error,
140 .destructor = afs_flat_call_destructor,
144 * dispatch a get volume entry by name operation
146 int afs_vl_get_entry_by_name(struct in_addr *addr,
149 struct afs_cache_vlocation *entry,
150 const struct afs_wait_mode *wait_mode)
152 struct afs_call *call;
153 size_t volnamesz, reqsz, padsz;
158 volnamesz = strlen(volname);
159 padsz = (4 - (volnamesz & 3)) & 3;
160 reqsz = 8 + volnamesz + padsz;
162 call = afs_alloc_flat_call(&afs_RXVLGetEntryByName, reqsz, 384);
168 call->service_id = VL_SERVICE;
169 call->port = htons(AFS_VL_PORT);
171 /* marshall the parameters */
173 *bp++ = htonl(VLGETENTRYBYNAME);
174 *bp++ = htonl(volnamesz);
175 memcpy(bp, volname, volnamesz);
177 memset((void *) bp + volnamesz, 0, padsz);
179 /* initiate the call */
180 return afs_make_call(addr, call, GFP_KERNEL, wait_mode);
184 * dispatch a get volume entry by ID operation
186 int afs_vl_get_entry_by_id(struct in_addr *addr,
189 afs_voltype_t voltype,
190 struct afs_cache_vlocation *entry,
191 const struct afs_wait_mode *wait_mode)
193 struct afs_call *call;
198 call = afs_alloc_flat_call(&afs_RXVLGetEntryById, 12, 384);
204 call->service_id = VL_SERVICE;
205 call->port = htons(AFS_VL_PORT);
207 /* marshall the parameters */
209 *bp++ = htonl(VLGETENTRYBYID);
210 *bp++ = htonl(volid);
211 *bp = htonl(voltype);
213 /* initiate the call */
214 return afs_make_call(addr, call, GFP_KERNEL, wait_mode);