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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 | /* AFS Volume Location Service client * * Copyright (C) 2002 Red Hat, Inc. All Rights Reserved. * Written by David Howells (dhowells@redhat.com) * * 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. */ #include <linux/gfp.h> #include <linux/init.h> #include <linux/sched.h> #include "internal.h" /* * map volume locator abort codes to error codes */ static int afs_vl_abort_to_error(u32 abort_code) { _enter("%u", abort_code); switch (abort_code) { case AFSVL_IDEXIST: return -EEXIST; case AFSVL_IO: return -EREMOTEIO; case AFSVL_NAMEEXIST: return -EEXIST; case AFSVL_CREATEFAIL: return -EREMOTEIO; case AFSVL_NOENT: return -ENOMEDIUM; case AFSVL_EMPTY: return -ENOMEDIUM; case AFSVL_ENTDELETED: return -ENOMEDIUM; case AFSVL_BADNAME: return -EINVAL; case AFSVL_BADINDEX: return -EINVAL; case AFSVL_BADVOLTYPE: return -EINVAL; case AFSVL_BADSERVER: return -EINVAL; case AFSVL_BADPARTITION: return -EINVAL; case AFSVL_REPSFULL: return -EFBIG; case AFSVL_NOREPSERVER: return -ENOENT; case AFSVL_DUPREPSERVER: return -EEXIST; case AFSVL_RWNOTFOUND: return -ENOENT; case AFSVL_BADREFCOUNT: return -EINVAL; case AFSVL_SIZEEXCEEDED: return -EINVAL; case AFSVL_BADENTRY: return -EINVAL; case AFSVL_BADVOLIDBUMP: return -EINVAL; case AFSVL_IDALREADYHASHED: return -EINVAL; case AFSVL_ENTRYLOCKED: return -EBUSY; case AFSVL_BADVOLOPER: return -EBADRQC; case AFSVL_BADRELLOCKTYPE: return -EINVAL; case AFSVL_RERELEASE: return -EREMOTEIO; case AFSVL_BADSERVERFLAG: return -EINVAL; case AFSVL_PERM: return -EACCES; case AFSVL_NOMEM: return -EREMOTEIO; default: return afs_abort_to_error(abort_code); } } /* * deliver reply data to a VL.GetEntryByXXX call */ static int afs_deliver_vl_get_entry_by_xxx(struct afs_call *call) { struct afs_cache_vlocation *entry; __be32 *bp; u32 tmp; int loop, ret; _enter(""); ret = afs_transfer_reply(call); if (ret < 0) return ret; /* unmarshall the reply once we've received all of it */ entry = call->reply; bp = call->buffer; for (loop = 0; loop < 64; loop++) entry->name[loop] = ntohl(*bp++); entry->name[loop] = 0; bp++; /* final NUL */ bp++; /* type */ entry->nservers = ntohl(*bp++); for (loop = 0; loop < 8; loop++) entry->servers[loop].s_addr = *bp++; bp += 8; /* partition IDs */ for (loop = 0; loop < 8; loop++) { tmp = ntohl(*bp++); entry->srvtmask[loop] = 0; if (tmp & AFS_VLSF_RWVOL) entry->srvtmask[loop] |= AFS_VOL_VTM_RW; if (tmp & AFS_VLSF_ROVOL) entry->srvtmask[loop] |= AFS_VOL_VTM_RO; if (tmp & AFS_VLSF_BACKVOL) entry->srvtmask[loop] |= AFS_VOL_VTM_BAK; } entry->vid[0] = ntohl(*bp++); entry->vid[1] = ntohl(*bp++); entry->vid[2] = ntohl(*bp++); bp++; /* clone ID */ tmp = ntohl(*bp++); /* flags */ entry->vidmask = 0; if (tmp & AFS_VLF_RWEXISTS) entry->vidmask |= AFS_VOL_VTM_RW; if (tmp & AFS_VLF_ROEXISTS) entry->vidmask |= AFS_VOL_VTM_RO; if (tmp & AFS_VLF_BACKEXISTS) entry->vidmask |= AFS_VOL_VTM_BAK; if (!entry->vidmask) return -EBADMSG; _leave(" = 0 [done]"); return 0; } /* * VL.GetEntryByName operation type */ static const struct afs_call_type afs_RXVLGetEntryByName = { .name = "VL.GetEntryByName", .deliver = afs_deliver_vl_get_entry_by_xxx, .abort_to_error = afs_vl_abort_to_error, .destructor = afs_flat_call_destructor, }; /* * VL.GetEntryById operation type */ static const struct afs_call_type afs_RXVLGetEntryById = { .name = "VL.GetEntryById", .deliver = afs_deliver_vl_get_entry_by_xxx, .abort_to_error = afs_vl_abort_to_error, .destructor = afs_flat_call_destructor, }; /* * dispatch a get volume entry by name operation */ int afs_vl_get_entry_by_name(struct in_addr *addr, struct key *key, const char *volname, struct afs_cache_vlocation *entry, bool async) { struct afs_call *call; size_t volnamesz, reqsz, padsz; __be32 *bp; _enter(""); volnamesz = strlen(volname); padsz = (4 - (volnamesz & 3)) & 3; reqsz = 8 + volnamesz + padsz; call = afs_alloc_flat_call(&afs_RXVLGetEntryByName, reqsz, 384); if (!call) return -ENOMEM; call->key = key; call->reply = entry; call->service_id = VL_SERVICE; call->port = htons(AFS_VL_PORT); /* marshall the parameters */ bp = call->request; *bp++ = htonl(VLGETENTRYBYNAME); *bp++ = htonl(volnamesz); memcpy(bp, volname, volnamesz); if (padsz > 0) memset((void *) bp + volnamesz, 0, padsz); /* initiate the call */ return afs_make_call(addr, call, GFP_KERNEL, async); } /* * dispatch a get volume entry by ID operation */ int afs_vl_get_entry_by_id(struct in_addr *addr, struct key *key, afs_volid_t volid, afs_voltype_t voltype, struct afs_cache_vlocation *entry, bool async) { struct afs_call *call; __be32 *bp; _enter(""); call = afs_alloc_flat_call(&afs_RXVLGetEntryById, 12, 384); if (!call) return -ENOMEM; call->key = key; call->reply = entry; call->service_id = VL_SERVICE; call->port = htons(AFS_VL_PORT); /* marshall the parameters */ bp = call->request; *bp++ = htonl(VLGETENTRYBYID); *bp++ = htonl(volid); *bp = htonl(voltype); /* initiate the call */ return afs_make_call(addr, call, GFP_KERNEL, async); } |