mirror of
https://github.com/samba-team/samba.git
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ae3d54094b
(This used to be ctdb commit 603cd77988c181525946cd5eb0f4d0d646b58059)
163 lines
4.8 KiB
C
163 lines
4.8 KiB
C
/*
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ctdb tunables code
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Copyright (C) Andrew Tridgell 2007
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include "includes.h"
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#include "../include/ctdb_private.h"
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static const struct {
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const char *name;
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uint32_t default_v;
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size_t offset;
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} tunable_map[] = {
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{ "MaxRedirectCount", 3, offsetof(struct ctdb_tunable, max_redirect_count) },
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{ "SeqnumFrequency", 1, offsetof(struct ctdb_tunable, seqnum_frequency) },
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{ "ControlTimeout", 60, offsetof(struct ctdb_tunable, control_timeout) },
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{ "TraverseTimeout", 20, offsetof(struct ctdb_tunable, traverse_timeout) },
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{ "KeepaliveInterval", 2, offsetof(struct ctdb_tunable, keepalive_interval) },
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{ "KeepaliveLimit", 3, offsetof(struct ctdb_tunable, keepalive_limit) },
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{ "MaxLACount", 7, offsetof(struct ctdb_tunable, max_lacount) },
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{ "RecoverTimeout", 5, offsetof(struct ctdb_tunable, recover_timeout) },
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{ "RecoverInterval", 1, offsetof(struct ctdb_tunable, recover_interval) },
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{ "ElectionTimeout", 3, offsetof(struct ctdb_tunable, election_timeout) },
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{ "TakeoverTimeout", 5, offsetof(struct ctdb_tunable, takeover_timeout) },
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{ "MonitorInterval", 15, offsetof(struct ctdb_tunable, monitor_interval) },
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{ "EventScriptTimeout", 20, offsetof(struct ctdb_tunable, script_timeout) },
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{ "RecoveryGracePeriod", 60, offsetof(struct ctdb_tunable, recovery_grace_period) },
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{ "RecoveryBanPeriod", 300, offsetof(struct ctdb_tunable, recovery_ban_period) },
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};
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/*
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set all tunables to defaults
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*/
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void ctdb_tunables_set_defaults(struct ctdb_context *ctdb)
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{
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int i;
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for (i=0;i<ARRAY_SIZE(tunable_map);i++) {
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*(uint32_t *)(tunable_map[i].offset + (uint8_t*)&ctdb->tunable) = tunable_map[i].default_v;
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}
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}
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/*
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get a tunable
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*/
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int32_t ctdb_control_get_tunable(struct ctdb_context *ctdb, TDB_DATA indata,
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TDB_DATA *outdata)
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{
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struct ctdb_control_get_tunable *t =
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(struct ctdb_control_get_tunable *)indata.dptr;
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char *name;
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uint32_t val;
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int i;
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if (indata.dsize < sizeof(*t) ||
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t->length > indata.dsize - offsetof(struct ctdb_control_get_tunable, name)) {
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DEBUG(0,("Bad indata in ctdb_control_get_tunable\n"));
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return -1;
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}
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name = talloc_strndup(ctdb, (char*)t->name, t->length);
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CTDB_NO_MEMORY(ctdb, name);
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for (i=0;i<ARRAY_SIZE(tunable_map);i++) {
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if (strcasecmp(name, tunable_map[i].name) == 0) break;
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}
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talloc_free(name);
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if (i == ARRAY_SIZE(tunable_map)) {
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return -1;
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}
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val = *(uint32_t *)(tunable_map[i].offset + (uint8_t*)&ctdb->tunable);
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outdata->dptr = (uint8_t *)talloc(outdata, uint32_t);
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CTDB_NO_MEMORY(ctdb, outdata->dptr);
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*(uint32_t *)outdata->dptr = val;
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outdata->dsize = sizeof(uint32_t);
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return 0;
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}
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/*
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set a tunable
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*/
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int32_t ctdb_control_set_tunable(struct ctdb_context *ctdb, TDB_DATA indata)
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{
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struct ctdb_control_set_tunable *t =
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(struct ctdb_control_set_tunable *)indata.dptr;
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char *name;
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int i;
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if (indata.dsize < sizeof(*t) ||
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t->length > indata.dsize - offsetof(struct ctdb_control_set_tunable, name)) {
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DEBUG(0,("Bad indata in ctdb_control_set_tunable\n"));
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return -1;
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}
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name = talloc_strndup(ctdb, (char *)t->name, t->length);
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CTDB_NO_MEMORY(ctdb, name);
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for (i=0;i<ARRAY_SIZE(tunable_map);i++) {
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if (strcasecmp(name, tunable_map[i].name) == 0) break;
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}
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talloc_free(name);
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if (i == ARRAY_SIZE(tunable_map)) {
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return -1;
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}
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*(uint32_t *)(tunable_map[i].offset + (uint8_t*)&ctdb->tunable) = t->value;
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return 0;
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}
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/*
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list tunables
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*/
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int32_t ctdb_control_list_tunables(struct ctdb_context *ctdb, TDB_DATA *outdata)
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{
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char *list = NULL;
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int i;
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struct ctdb_control_list_tunable *t;
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list = talloc_strdup(outdata, tunable_map[0].name);
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CTDB_NO_MEMORY(ctdb, list);
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for (i=1;i<ARRAY_SIZE(tunable_map);i++) {
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list = talloc_asprintf_append(list, ":%s", tunable_map[i].name);
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CTDB_NO_MEMORY(ctdb, list);
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}
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outdata->dsize = offsetof(struct ctdb_control_list_tunable, data) +
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strlen(list) + 1;
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outdata->dptr = talloc_size(outdata, outdata->dsize);
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CTDB_NO_MEMORY(ctdb, outdata->dptr);
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t = (struct ctdb_control_list_tunable *)outdata->dptr;
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t->length = strlen(list)+1;
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memcpy(t->data, list, t->length);
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talloc_free(list);
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return 0;
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}
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