static int
do_volop(struct fssync_state * state, afs_int32 command, SYNC_response * res)
{
afs_int32 code;
SYNC_PROTO_BUF_DECL(res_buf);
SYNC_response res_l;
if (!res) {
res = &res_l;
res->payload.len = SYNC_PROTO_MAX_LEN;
res->payload.buf = res_buf;
}
fprintf(stderr, "calling FSYNC_VolOp with command code %d (%s)\n",
command, FSYNC_com2string(command));
code = FSYNC_VolOp(state->vop->volume,
state->vop->partName,
command,
state->reason,
res);
debug_response(code, res);
VDisconnectFS();
return 0;
}
/* Try to detect if the fileserver is DAFS, and if so, re-exec as the
* DAFS-enabled fssync-debug (dafssync_debug). If we fail to detect or
* exec, just try to proceed anyway as if the server is not DAFS */
static void
dafs_prolog(void)
{
SYNC_response res;
SYNC_PROTO_BUF_DECL(res_buf);
afs_int32 code;
char *dfssd;
res.payload.len = SYNC_PROTO_MAX_LEN;
res.payload.buf = res_buf;
/* LISTVOLUMES is a no-op; we just want to get the response header flags
* to see if the server reports itself as DAFS or not */
code = FSYNC_VolOp(0, NULL, FSYNC_VOL_LISTVOLUMES, FSYNC_WHATEVER, &res);
if (code) {
/* probably failed to contact the fileserver; later code will provide
* some warning/error indication */
return;
}
if (!(res.hdr.flags & SYNC_FLAG_DAFS_EXTENSIONS)) {
/* fileserver is not DAFS, so we don't need to do anything */
return;
}
dfssd = afs_exec_alt(fssd_argc, fssd_argv, "da", NULL);
fprintf(stderr, "\n*** server asserted demand attach extensions, but we failed\n"
"*** to exec a DAFS-enabled fssync-debug '%s' (errno=%d);\n"
"*** attempting to proceed without it.\n\n", dfssd, errno);
free(dfssd);
}
/**
* gracefully disconnect a sync client handle.
*
* @param[in] state pointer to sync client handle
*
* @return operation status
* @retval SYNC_OK success
*/
afs_int32
SYNC_closeChannel(SYNC_client_state * state)
{
afs_int32 code;
SYNC_command com;
SYNC_response res;
SYNC_PROTO_BUF_DECL(ores);
if (state->fd == -1)
return SYNC_OK;
memset(&com, 0, sizeof(com));
memset(&res, 0, sizeof(res));
res.payload.len = SYNC_PROTO_MAX_LEN;
res.payload.buf = ores;
com.hdr.command = SYNC_COM_CHANNEL_CLOSE;
com.hdr.command_len = sizeof(SYNC_command_hdr);
com.hdr.flags |= SYNC_FLAG_CHANNEL_SHUTDOWN;
/* in case the other end dropped, don't do any retries */
state->retry_limit = 0;
state->hard_timeout = 0;
SYNC_ask(state, &com, &res);
SYNC_disconnect(state);
return SYNC_OK;
}
static int
VolOpQuery(struct cmd_syndesc * as, void * rock)
{
struct state state;
SYNC_PROTO_BUF_DECL(res_buf);
SYNC_response res;
FSSYNC_VolOp_info vop;
int i;
res.hdr.response_len = sizeof(res.hdr);
res.payload.buf = res_buf;
res.payload.len = SYNC_PROTO_MAX_LEN;
common_prolog(as, &state);
common_volop_prolog(as, &state);
do_volop(&state, FSYNC_VOL_QUERY_VOP, &res);
if (!(res.hdr.flags & SYNC_FLAG_DAFS_EXTENSIONS)) {
printf("*** file server not compiled with demand attach extensions.\n");
printf("*** pending volume operation metadata not available.\n");
}
if (res.hdr.response == SYNC_OK) {
memcpy(&vop, res.payload.buf, sizeof(FSSYNC_VolOp_info));
printf("pending_vol_op = {\n");
printf("\tcom = {\n");
printf("\t\tproto_version = %u\n", vop.com.proto_version);
printf("\t\tpkt_seq = %u\n", vop.com.pkt_seq);
printf("\t\tcom_seq = %u\n", vop.com.com_seq);
printf("\t\tprogramType = %d (%s)\n",
vop.com.programType, program_type_to_string(vop.com.programType));
printf("\t\tpid = %d\n", vop.com.pid);
printf("\t\ttid = %d\n", vop.com.tid);
printf("\t\tcommand = %d (%s)\n",
vop.com.command, command_code_to_string(vop.com.command));
printf("\t\treason = %d (%s)\n",
vop.com.reason, reason_code_to_string(vop.com.reason));
printf("\t\tcommand_len = %u\n", vop.com.command_len);
printf("\t\tflags = 0x%x\n", vop.com.flags);
printf("\t}\n");
printf("\tvop = {\n");
printf("\t\tvolume = %u\n", vop.vop.volume);
if (afs_strnlen(vop.vop.partName, sizeof(vop.vop.partName)) <
sizeof(vop.vop.partName)) {
printf("\t\tpartName = '%s'\n", vop.vop.partName);
} else {
printf("\t\tpartName = (illegal string)\n");
}
printf("\t}\n");
printf("}\n");
}
return 0;
}
/**
* write a response structure to a sync socket.
*
* @param[in] state handle to server-side state object
* @param[in] fd file descriptor on which to perform i/o
* @param[in] res handle to response packet
*
* @return operation status
* @retval SYNC_OK
* @retval SYNC_COM_ERROR
*/
afs_int32
SYNC_putRes(SYNC_server_state_t * state,
int fd,
SYNC_response * res)
{
int n;
afs_int32 code = SYNC_OK;
SYNC_PROTO_BUF_DECL(buf);
if (res->hdr.response_len > (sizeof(res->hdr) + res->payload.len)) {
Log("SYNC_putRes: response_len field in response header inconsistent\n");
code = SYNC_COM_ERROR;
goto done;
}
if (res->hdr.response_len > SYNC_PROTO_MAX_LEN) {
Log("SYNC_putRes: internal SYNC buffer too small; please file a bug\n");
code = SYNC_COM_ERROR;
goto done;
}
#ifdef AFS_DEMAND_ATTACH_FS
res->hdr.flags |= SYNC_FLAG_DAFS_EXTENSIONS;
#endif
res->hdr.proto_version = state->proto_version;
res->hdr.pkt_seq = ++state->pkt_seq;
res->hdr.res_seq = ++state->res_seq;
memcpy(buf, &res->hdr, sizeof(res->hdr));
if (res->payload.len) {
memcpy(buf + sizeof(res->hdr), res->payload.buf,
res->hdr.response_len - sizeof(res->hdr));
}
#ifdef AFS_NT40_ENV
n = send(fd, buf, res->hdr.response_len, 0);
#else /* !AFS_NT40_ENV */
n = write(fd, buf, res->hdr.response_len);
#endif /* !AFS_NT40_ENV */
if (res->hdr.response_len != n) {
Log("SYNC_putRes: write failed\n");
res->hdr.response = SYNC_COM_ERROR;
goto done;
}
done:
return code;
}
static int
do_volop(struct state * state, afs_int32 command, SYNC_response * res)
{
afs_int32 code;
SYNC_PROTO_BUF_DECL(res_buf);
SYNC_response res_l;
if (!res) {
res = &res_l;
res->payload.len = SYNC_PROTO_MAX_LEN;
res->payload.buf = res_buf;
}
fprintf(stderr, "calling FSYNC_VolOp with command code %d (%s)\n",
command, command_code_to_string(command));
code = FSYNC_VolOp(state->vop->volume,
state->vop->partName,
command,
state->reason,
res);
switch (code) {
case SYNC_OK:
case SYNC_DENIED:
break;
default:
fprintf(stderr, "possible sync protocol error. return code was %d\n", code);
}
fprintf(stderr, "FSYNC_VolOp returned %d (%s)\n", code, response_code_to_string(code));
fprintf(stderr, "protocol response code was %d (%s)\n",
res->hdr.response, response_code_to_string(res->hdr.response));
fprintf(stderr, "protocol reason code was %d (%s)\n",
res->hdr.reason, reason_code_to_string(res->hdr.reason));
VDisconnectFS();
}
static int
VnQuery(struct cmd_syndesc * as, void * rock)
{
struct state state;
SYNC_PROTO_BUF_DECL(res_buf);
SYNC_response res;
Vnode v;
int hi, lo;
res.hdr.response_len = sizeof(res.hdr);
res.payload.buf = res_buf;
res.payload.len = SYNC_PROTO_MAX_LEN;
common_prolog(as, &state);
vn_prolog(as, &state);
do_vnqry(&state, &res);
if (res.hdr.response == SYNC_OK) {
memcpy(&v, res.payload.buf, sizeof(Volume));
printf("vnode = {\n");
printf("\tvid_hash = {\n");
printf("\t\tnext = 0x%lx\n", v.vid_hash.next);
printf("\t\tprev = 0x%lx\n", v.vid_hash.prev);
printf("\t}\n");
printf("\thashNext = 0x%lx\n", v.hashNext);
printf("\tlruNext = 0x%lx\n", v.lruNext);
printf("\tlruPrev = 0x%lx\n", v.lruPrev);
printf("\thashIndex = %hu\n", v.hashIndex);
printf("\tchanged_newTime = %u\n", (unsigned int) v.changed_newTime);
printf("\tchanged_oldTime = %u\n", (unsigned int) v.changed_oldTime);
printf("\tdelete = %u\n", (unsigned int) v.delete);
printf("\tvnodeNumber = %u\n", v.vnodeNumber);
printf("\tvolumePtr = 0x%lx\n", v.volumePtr);
printf("\tnUsers = %u\n", v.nUsers);
printf("\tcacheCheck = %u\n", v.cacheCheck);
#ifdef AFS_DEMAND_ATTACH_FS
if (!(res.hdr.flags & SYNC_FLAG_DAFS_EXTENSIONS)) {
printf("*** fssync-debug built to expect demand attach extensions. server asserted\n");
printf("*** that it was not compiled with demand attach turned on. please recompile\n");
printf("*** fssync-debug to match your server\n");
goto done;
}
printf("\tnReaders = %u\n", v.nReaders);
printf("\tvn_state_flags = %s\n", vn_flags_to_string(v.vn_state_flags));
printf("\tvn_state = %s\n", vn_state_to_string(v.vn_state));
#else
if (res.hdr.flags & SYNC_FLAG_DAFS_EXTENSIONS) {
printf("*** server asserted demand attach extensions. fssync-debug not built to\n");
printf("*** recognize those extensions. please recompile fssync-debug if you need\n");
printf("*** to dump dafs extended state\n");
goto done;
}
#endif /* !AFS_DEMAND_ATTACH_FS */
printf("\twriter = %u\n", v.writer);
printf("\tvcp = 0x%lx\n", v.vcp);
printf("\thandle = 0x%lx\n", v.handle);
printf("\tdisk = {\n");
printf("\t\ttype = %u\n", v.disk.type);
printf("\t\tcloned = %u\n", v.disk.cloned);
printf("\t\tmodeBits = %u\n", v.disk.modeBits);
printf("\t\tlinkCount = %d\n", v.disk.linkCount);
printf("\t\tlength = %u\n", v.disk.length);
printf("\t\tuniquifier = %u\n", v.disk.uniquifier);
printf("\t\tdataVersion = %u\n", v.disk.dataVersion);
printf("\t\tvn_ino_lo = %u\n", v.disk.vn_ino_lo);
printf("\t\tunixModifyTime = %u\n", v.disk.unixModifyTime);
printf("\t\tauthor = %u\n", v.disk.author);
printf("\t\towner = %u\n", v.disk.owner);
printf("\t\tparent = %u\n", v.disk.parent);
printf("\t\tvnodeMagic = %u\n", v.disk.vnodeMagic);
printf("\t\tlock = {\n");
printf("\t\t\tlockCount = %d\n", v.disk.lock.lockCount);
printf("\t\t\tlockTime = %d\n", v.disk.lock.lockTime);
printf("\t\t}\n");
printf("\t\tserverModifyTime = %u\n", v.disk.serverModifyTime);
printf("\t\tgroup = %d\n", v.disk.group);
printf("\t\tvn_ino_hi = %d\n", v.disk.vn_ino_hi);
printf("\t\treserved6 = %u\n", v.disk.reserved6);
printf("\t}\n");
printf("}\n");
}
static int
VolHdrQuery(struct cmd_syndesc * as, void * rock)
{
struct state state;
SYNC_PROTO_BUF_DECL(res_buf);
SYNC_response res;
VolumeDiskData v;
int i;
res.hdr.response_len = sizeof(res.hdr);
res.payload.buf = res_buf;
res.payload.len = SYNC_PROTO_MAX_LEN;
common_prolog(as, &state);
common_volop_prolog(as, &state);
do_volop(&state, FSYNC_VOL_QUERY_HDR, &res);
if (res.hdr.response == SYNC_OK) {
memcpy(&v, res.payload.buf, sizeof(VolumeDiskData));
printf("VolumeDiskData = {\n");
printf("\tstamp = {\n");
printf("\t\tmagic = 0x%x\n", v.stamp.magic);
printf("\t\tversion = %u\n", v.stamp.version);
printf("\t}\n");
printf("\tid = %u\n", v.id);
printf("\tname = '%s'\n", v.name);
if (v.inUse != 0) {
printf("\tinUse = %d (%s)\n", v.inUse, program_type_to_string(v.inUse));
} else {
printf("\tinUse = %d (no)\n", v.inUse);
}
printf("\tinService = %d\n", v.inService);
printf("\tblessed = %d\n", v.blessed);
printf("\tneedsSalvaged = %d\n", v.needsSalvaged);
printf("\tuniquifier = %u\n", v.uniquifier);
printf("\ttype = %d\n", v.type);
printf("\tparentId = %u\n", v.parentId);
printf("\tcloneId = %u\n", v.cloneId);
printf("\tbackupId = %u\n", v.backupId);
printf("\trestoredFromId = %u\n", v.restoredFromId);
printf("\tneedsCallback = %d\n", v.needsCallback);
printf("\tdestroyMe = %d\n", v.destroyMe);
printf("\tdontSalvage = %d\n", v.dontSalvage);
printf("\tmaxquota = %d\n", v.maxquota);
printf("\tminquota = %d\n", v.minquota);
printf("\tmaxfiles = %d\n", v.maxfiles);
printf("\taccountNumber = %u\n", v.accountNumber);
printf("\towner = %u\n", v.owner);
printf("\tfilecount = %d\n", v.filecount);
printf("\tdiskused = %d\n", v.diskused);
printf("\tdayUse = %d\n", v.dayUse);
for (i = 0; i < 7; i++) {
printf("\tweekUse[%d] = %d\n", i, v.weekUse[i]);
}
printf("\tdayUseDate = %u\n", v.dayUseDate);
printf("\tcreationDate = %u\n", v.creationDate);
printf("\taccessDate = %u\n", v.accessDate);
printf("\tupdateDate = %u\n", v.updateDate);
printf("\texpirationDate = %u\n", v.expirationDate);
printf("\tbackupDate = %u\n", v.backupDate);
printf("\tcopyDate = %u\n", v.copyDate);
#ifdef OPENAFS_VOL_STATS
printf("\tstat_initialized = %d\n", v.stat_initialized);
#else
printf("\tmtd = '%s'\n", v.motd);
#endif
printf("}\n");
}
return 0;
}
static int
VolQuery(struct cmd_syndesc * as, void * rock)
{
struct state state;
SYNC_PROTO_BUF_DECL(res_buf);
SYNC_response res;
Volume v;
int hi, lo;
res.hdr.response_len = sizeof(res.hdr);
res.payload.buf = res_buf;
res.payload.len = SYNC_PROTO_MAX_LEN;
common_prolog(as, &state);
common_volop_prolog(as, &state);
do_volop(&state, FSYNC_VOL_QUERY, &res);
if (res.hdr.response == SYNC_OK) {
memcpy(&v, res.payload.buf, sizeof(Volume));
printf("volume = {\n");
printf("\thashid = %u\n", v.hashid);
printf("\theader = 0x%x\n", v.header);
printf("\tdevice = %d\n", v.device);
printf("\tpartition = 0x%x\n", v.partition);
printf("\tlinkHandle = 0x%x\n", v.linkHandle);
printf("\tnextVnodeUnique = %u\n", v.nextVnodeUnique);
printf("\tdiskDataHandle = 0x%x\n", v.diskDataHandle);
printf("\tvnodeHashOffset = %u\n", v.vnodeHashOffset);
printf("\tshuttingDown = %d\n", v.shuttingDown);
printf("\tgoingOffline = %d\n", v.goingOffline);
printf("\tcacheCheck = %u\n", v.cacheCheck);
printf("\tnUsers = %d\n", v.nUsers);
printf("\tneedsPutBack = %d\n", v.needsPutBack);
printf("\tspecialStatus = %d\n", v.specialStatus);
printf("\tupdateTime = %u\n", v.updateTime);
printf("\tvnodeIndex[vSmall] = {\n");
printf("\t\thandle = 0x%x\n", v.vnodeIndex[vSmall].handle);
printf("\t\tbitmap = 0x%x\n", v.vnodeIndex[vSmall].bitmap);
printf("\t\tbitmapSize = %u\n", v.vnodeIndex[vSmall].bitmapSize);
printf("\t\tbitmapOffset = %u\n", v.vnodeIndex[vSmall].bitmapOffset);
printf("\t}\n");
printf("\tvnodeIndex[vLarge] = {\n");
printf("\t\thandle = 0x%x\n", v.vnodeIndex[vLarge].handle);
printf("\t\tbitmap = 0x%x\n", v.vnodeIndex[vLarge].bitmap);
printf("\t\tbitmapSize = %u\n", v.vnodeIndex[vLarge].bitmapSize);
printf("\t\tbitmapOffset = %u\n", v.vnodeIndex[vLarge].bitmapOffset);
printf("\t}\n");
#ifdef AFS_DEMAND_ATTACH_FS
if (res.hdr.flags & SYNC_FLAG_DAFS_EXTENSIONS) {
printf("\tupdateTime = %u\n", v.updateTime);
printf("\tattach_state = %s\n", vol_state_to_string(v.attach_state));
printf("\tattach_flags = %s\n", vol_flags_to_string(v.attach_flags));
printf("\tnWaiters = %d\n", v.nWaiters);
printf("\tchainCacheCheck = %d\n", v.chainCacheCheck);
/* online salvage structure */
printf("\tsalvage = {\n");
printf("\t\tprio = %u\n", v.salvage.prio);
printf("\t\treason = %d\n", v.salvage.reason);
printf("\t\trequested = %d\n", v.salvage.requested);
printf("\t\tscheduled = %d\n", v.salvage.scheduled);
printf("\t}\n");
/* statistics structure */
printf("\tstats = {\n");
printf("\t\thash_lookups = {\n");
SplitInt64(v.stats.hash_lookups,hi,lo);
printf("\t\t\thi = %u\n", hi);
printf("\t\t\tlo = %u\n", lo);
printf("\t\t}\n");
printf("\t\thash_short_circuits = {\n");
SplitInt64(v.stats.hash_short_circuits,hi,lo);
printf("\t\t\thi = %u\n", hi);
printf("\t\t\tlo = %u\n", lo);
printf("\t\t}\n");
printf("\t\thdr_loads = {\n");
SplitInt64(v.stats.hdr_loads,hi,lo);
printf("\t\t\thi = %u\n", hi);
printf("\t\t\tlo = %u\n", lo);
printf("\t\t}\n");
printf("\t\thdr_gets = {\n");
SplitInt64(v.stats.hdr_gets,hi,lo);
printf("\t\t\thi = %u\n", hi);
printf("\t\t\tlo = %u\n", lo);
printf("\t\t}\n");
printf("\t\tattaches = %u\n", v.stats.attaches);
printf("\t\tsoft_detaches = %u\n", v.stats.soft_detaches);
printf("\t\tsalvages = %u\n", v.stats.salvages);
printf("\t\tvol_ops = %u\n", v.stats.vol_ops);
printf("\t\tlast_attach = %u\n", v.stats.last_attach);
printf("\t\tlast_get = %u\n", v.stats.last_get);
printf("\t\tlast_promote = %u\n", v.stats.last_promote);
printf("\t\tlast_hdr_get = %u\n", v.stats.last_hdr_get);
printf("\t\tlast_hdr_load = %u\n", v.stats.last_hdr_load);
printf("\t\tlast_salvage = %u\n", v.stats.last_salvage);
printf("\t\tlast_salvage_req = %u\n", v.stats.last_salvage_req);
printf("\t\tlast_vol_op = %u\n", v.stats.last_vol_op);
printf("\t}\n");
/* VLRU state */
printf("\tvlru = {\n");
printf("\t\tidx = %d (%s)\n",
v.vlru.idx, vlru_idx_to_string(v.vlru.idx));
printf("\t}\n");
/* volume op state */
printf("\tpending_vol_op = 0x%x\n", v.pending_vol_op);
}
#else /* !AFS_DEMAND_ATTACH_FS */
if (res.hdr.flags & SYNC_FLAG_DAFS_EXTENSIONS) {
printf("*** server asserted demand attach extensions. fssync-debug not built to\n");
printf("*** recognize those extensions. please recompile fssync-debug if you need\n");
printf("*** to dump dafs extended state\n");
}
#endif /* !AFS_DEMAND_ATTACH_FS */
printf("}\n");
}
return 0;
}
static int
StatsQuery(struct cmd_syndesc * as, void * rock)
{
afs_int32 code;
int command;
struct cmd_item *ti;
struct state state;
SYNC_PROTO_BUF_DECL(res_buf);
SYNC_response res;
FSSYNC_StatsOp_hdr scom;
union {
void * ptr;
struct VolPkgStats * vol_stats;
struct VolumeHashChainStats * hash_stats;
#ifdef AFS_DEMAND_ATTACH_FS
struct volume_hdr_LRU_stats * hdr_stats;
#endif
struct DiskPartitionStats64 * vicep_stats;
} sres;
sres.ptr = res_buf;
res.hdr.response_len = sizeof(res.hdr);
res.payload.buf = res_buf;
res.payload.len = SYNC_PROTO_MAX_LEN;
if ((ti = as->parms[CUSTOM_PARMS_OFFSET].items)) { /* -subcommand */
if (!strcasecmp(ti->data, "vicep")) {
command = FSYNC_VOL_STATS_VICEP;
} else if (!strcasecmp(ti->data, "hash")) {
command = FSYNC_VOL_STATS_HASH;
#ifdef AFS_DEMAND_ATTACH_FS
} else if (!strcasecmp(ti->data, "hdr")) {
command = FSYNC_VOL_STATS_HDR;
} else if (!strcasecmp(ti->data, "vlru")) {
command = FSYNC_VOL_STATS_VLRU;
#endif
} else if (!strcasecmp(ti->data, "pkg")) {
command = FSYNC_VOL_STATS_GENERAL;
} else if (!strcasecmp(ti->data, "help")) {
fprintf(stderr, "fssync-debug stats subcommands:\n");
fprintf(stderr, "\tpkg\tgeneral volume package stats\n");
fprintf(stderr, "\tvicep\tvice partition stats\n");
fprintf(stderr, "\thash\tvolume hash chain stats\n");
#ifdef AFS_DEMAND_ATTACH_FS
fprintf(stderr, "\thdr\tvolume header cache stats\n");
fprintf(stderr, "\tvlru\tvlru generation stats\n");
#endif
exit(0);
} else {
fprintf(stderr, "invalid stats subcommand");
exit(1);
}
} else {
command = FSYNC_VOL_STATS_GENERAL;
}
if ((ti = as->parms[CUSTOM_PARMS_OFFSET+1].items)) { /* -arg1 */
switch (command) {
case FSYNC_VOL_STATS_VICEP:
strlcpy(scom.args.partName, ti->data, sizeof(state.vop->partName));
break;
case FSYNC_VOL_STATS_HASH:
scom.args.hash_bucket = atoi(ti->data);
break;
case FSYNC_VOL_STATS_VLRU:
scom.args.vlru_generation = atoi(ti->data);
break;
default:
fprintf(stderr, "unrecognized arguments\n");
exit(1);
}
} else {
switch (command) {
case FSYNC_VOL_STATS_VICEP:
case FSYNC_VOL_STATS_HASH:
case FSYNC_VOL_STATS_VLRU:
fprintf(stderr, "this subcommand requires more parameters\n");
exit(1);
}
}
common_prolog(as, &state);
fprintf(stderr, "calling FSYNC_askfs with command code %d (%s)\n",
command, command_code_to_string(command));
code = FSYNC_StatsOp(&scom, command, FSYNC_WHATEVER, &res);
switch (code) {
case SYNC_OK:
case SYNC_DENIED:
break;
default:
fprintf(stderr, "possible sync protocol error. return code was %d\n", code);
}
fprintf(stderr, "FSYNC_VolOp returned %d (%s)\n", code, response_code_to_string(code));
fprintf(stderr, "protocol response code was %d (%s)\n",
res.hdr.response, response_code_to_string(res.hdr.response));
fprintf(stderr, "protocol reason code was %d (%s)\n",
res.hdr.reason, reason_code_to_string(res.hdr.reason));
VDisconnectFS();
if (res.hdr.response == SYNC_OK) {
switch (command) {
case FSYNC_VOL_STATS_GENERAL:
print_vol_stats_general(sres.vol_stats);
break;
case FSYNC_VOL_STATS_VICEP:
print_vol_stats_viceP(sres.vicep_stats);
break;
case FSYNC_VOL_STATS_HASH:
print_vol_stats_hash(sres.hash_stats);
break;
#ifdef AFS_DEMAND_ATTACH_FS
case FSYNC_VOL_STATS_HDR:
print_vol_stats_hdr(sres.hdr_stats);
break;
#endif /* AFS_DEMAND_ATTACH_FS */
}
}
return 0;
}
/**
* receive a command structure off a sync socket.
*
* @param[in] state pointer to server-side state object
* @param[in] fd file descriptor on which to perform i/o
* @param[out] com sync command object to be populated
*
* @return operation status
* @retval SYNC_OK command received
* @retval SYNC_COM_ERROR there was a socket communications error
*/
afs_int32
SYNC_getCom(SYNC_server_state_t * state,
int fd,
SYNC_command * com)
{
int n;
afs_int32 code = SYNC_OK;
#ifdef AFS_NT40_ENV
SYNC_PROTO_BUF_DECL(buf);
#else
struct iovec iov[2];
int iovcnt;
#endif
#ifdef AFS_NT40_ENV
n = recv(fd, buf, SYNC_PROTO_MAX_LEN, 0);
if (n == 0 || (n < 0 && WSAEINTR != WSAGetLastError())) {
Log("SYNC_getCom: error receiving command\n");
code = SYNC_COM_ERROR;
goto done;
}
#else /* !AFS_NT40_ENV */
iov[0].iov_base = (char *)&com->hdr;
iov[0].iov_len = sizeof(com->hdr);
if (com->payload.len) {
iov[1].iov_base = (char *)com->payload.buf;
iov[1].iov_len = com->payload.len;
iovcnt = 2;
} else {
iovcnt = 1;
}
n = readv(fd, iov, iovcnt);
if (n == 0 || (n < 0 && errno != EINTR)) {
Log("SYNC_getCom: error receiving command\n");
code = SYNC_COM_ERROR;
goto done;
}
#endif /* !AFS_NT40_ENV */
com->recv_len = n;
if (n < sizeof(com->hdr)) {
Log("SYNC_getCom: command too short\n");
code = SYNC_COM_ERROR;
goto done;
}
#ifdef AFS_NT40_ENV
memcpy(&com->hdr, buf, sizeof(com->hdr));
#endif
if ((n - sizeof(com->hdr)) > com->payload.len) {
Log("SYNC_getCom: command too long\n");
code = SYNC_COM_ERROR;
goto done;
}
#ifdef AFS_NT40_ENV
memcpy(com->payload.buf, buf + sizeof(com->hdr), n - sizeof(com->hdr));
#endif
done:
return code;
}
/**
* send a command to a sync server and wait for a response.
*
* @param[in] state pointer to sync client handle
* @param[in] com command object
* @param[out] res response object
*
* @return operation status
* @retval SYNC_OK success
* @retval SYNC_COM_ERROR communications error
*
* @internal
*/
static afs_int32
SYNC_ask_internal(SYNC_client_state * state, SYNC_command * com, SYNC_response * res)
{
int n;
SYNC_PROTO_BUF_DECL(buf);
#ifndef AFS_NT40_ENV
int iovcnt;
struct iovec iov[2];
#endif
if (state->fd == -1) {
Log("SYNC_ask: invalid sync file descriptor on circuit '%s'\n",
state->proto_name);
res->hdr.response = SYNC_COM_ERROR;
goto done;
}
if (com->hdr.command_len > SYNC_PROTO_MAX_LEN) {
Log("SYNC_ask: internal SYNC buffer too small on circuit '%s'; "
"please file a bug\n", state->proto_name);
res->hdr.response = SYNC_COM_ERROR;
goto done;
}
/*
* fill in some common header fields
*/
com->hdr.proto_version = state->proto_version;
com->hdr.pkt_seq = ++state->pkt_seq;
com->hdr.com_seq = ++state->com_seq;
#ifdef AFS_NT40_ENV
com->hdr.pid = 0;
com->hdr.tid = 0;
#else
com->hdr.pid = getpid();
#ifdef AFS_PTHREAD_ENV
com->hdr.tid = (afs_int32)pthread_self();
#else
{
PROCESS handle = LWP_ThreadId();
com->hdr.tid = (handle) ? handle->index : 0;
}
#endif /* !AFS_PTHREAD_ENV */
#endif /* !AFS_NT40_ENV */
memcpy(buf, &com->hdr, sizeof(com->hdr));
if (com->payload.len) {
memcpy(buf + sizeof(com->hdr), com->payload.buf,
com->hdr.command_len - sizeof(com->hdr));
}
#ifdef AFS_NT40_ENV
n = send(state->fd, buf, com->hdr.command_len, 0);
if (n != com->hdr.command_len) {
Log("SYNC_ask: write failed on circuit '%s'\n", state->proto_name);
res->hdr.response = SYNC_COM_ERROR;
goto done;
}
if (com->hdr.command == SYNC_COM_CHANNEL_CLOSE) {
/* short circuit close channel requests */
res->hdr.response = SYNC_OK;
goto done;
}
n = recv(state->fd, buf, SYNC_PROTO_MAX_LEN, 0);
if (n == 0 || (n < 0 && WSAEINTR != WSAGetLastError())) {
Log("SYNC_ask: No response on circuit '%s'\n", state->proto_name);
res->hdr.response = SYNC_COM_ERROR;
goto done;
}
#else /* !AFS_NT40_ENV */
n = write(state->fd, buf, com->hdr.command_len);
if (com->hdr.command_len != n) {
Log("SYNC_ask: write failed on circuit '%s'\n", state->proto_name);
res->hdr.response = SYNC_COM_ERROR;
goto done;
}
if (com->hdr.command == SYNC_COM_CHANNEL_CLOSE) {
/* short circuit close channel requests */
res->hdr.response = SYNC_OK;
goto done;
}
/* receive the response */
iov[0].iov_base = (char *)&res->hdr;
iov[0].iov_len = sizeof(res->hdr);
if (res->payload.len) {
iov[1].iov_base = (char *)res->payload.buf;
iov[1].iov_len = res->payload.len;
iovcnt = 2;
} else {
iovcnt = 1;
}
n = readv(state->fd, iov, iovcnt);
if (n == 0 || (n < 0 && errno != EINTR)) {
Log("SYNC_ask: No response on circuit '%s'\n", state->proto_name);
res->hdr.response = SYNC_COM_ERROR;
goto done;
}
#endif /* !AFS_NT40_ENV */
res->recv_len = n;
if (n < sizeof(res->hdr)) {
Log("SYNC_ask: response too short on circuit '%s'\n",
state->proto_name);
res->hdr.response = SYNC_COM_ERROR;
goto done;
}
#ifdef AFS_NT40_ENV
memcpy(&res->hdr, buf, sizeof(res->hdr));
#endif
if ((n - sizeof(res->hdr)) > res->payload.len) {
Log("SYNC_ask: response too long on circuit '%s'\n",
state->proto_name);
res->hdr.response = SYNC_COM_ERROR;
goto done;
}
#ifdef AFS_NT40_ENV
memcpy(res->payload.buf, buf + sizeof(res->hdr), n - sizeof(res->hdr));
#endif
if (res->hdr.response_len != n) {
Log("SYNC_ask: length field in response inconsistent "
"on circuit '%s'\n", state->proto_name);
res->hdr.response = SYNC_COM_ERROR;
goto done;
}
if (res->hdr.response == SYNC_DENIED) {
Log("SYNC_ask: negative response on circuit '%s'\n", state->proto_name);
}
done:
return res->hdr.response;
}