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config.c
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/* Configuration file parsing and CONFIG GET/SET commands implementation.
*
* Copyright (c) 2009-2012, Salvatore Sanfilippo <antirez at gmail dot com>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of Redis nor the names of its contributors may be used
* to endorse or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include "server.h"
#include "cluster.h"
#include <fcntl.h>
#include <sys/stat.h>
/*-----------------------------------------------------------------------------
* Config file name-value maps.
*----------------------------------------------------------------------------*/
typedef struct configEnum {
const char *name;
const int val;
} configEnum;
configEnum maxmemory_policy_enum[] = {
{"volatile-lru", MAXMEMORY_VOLATILE_LRU},
{"volatile-random",MAXMEMORY_VOLATILE_RANDOM},
{"volatile-ttl",MAXMEMORY_VOLATILE_TTL},
{"allkeys-lru",MAXMEMORY_ALLKEYS_LRU},
{"allkeys-random",MAXMEMORY_ALLKEYS_RANDOM},
{"noeviction",MAXMEMORY_NO_EVICTION},
{NULL, 0}
};
configEnum syslog_facility_enum[] = {
{"user", LOG_USER},
{"local0", LOG_LOCAL0},
{"local1", LOG_LOCAL1},
{"local2", LOG_LOCAL2},
{"local3", LOG_LOCAL3},
{"local4", LOG_LOCAL4},
{"local5", LOG_LOCAL5},
{"local6", LOG_LOCAL6},
{"local7", LOG_LOCAL7},
{NULL, 0}
};
configEnum loglevel_enum[] = {
{"debug", LL_DEBUG},
{"verbose", LL_VERBOSE},
{"notice", LL_NOTICE},
{"warning", LL_WARNING},
{NULL,0}
};
configEnum supervised_mode_enum[] = {
{"upstart", SUPERVISED_UPSTART},
{"systemd", SUPERVISED_SYSTEMD},
{"auto", SUPERVISED_AUTODETECT},
{"no", SUPERVISED_NONE},
{NULL, 0}
};
configEnum aof_fsync_enum[] = {
{"everysec", AOF_FSYNC_EVERYSEC},
{"always", AOF_FSYNC_ALWAYS},
{"no", AOF_FSYNC_NO},
{NULL, 0}
};
/* Output buffer limits presets. */
clientBufferLimitsConfig clientBufferLimitsDefaults[CLIENT_TYPE_OBUF_COUNT] = {
{0, 0, 0}, /* normal */
{1024*1024*256, 1024*1024*64, 60}, /* slave */
{1024*1024*32, 1024*1024*8, 60} /* pubsub */
};
/*-----------------------------------------------------------------------------
* Enum access functions
*----------------------------------------------------------------------------*/
/* Get enum value from name. If there is no match INT_MIN is returned. */
int configEnumGetValue(configEnum *ce, char *name) {
while(ce->name != NULL) {
if (!strcasecmp(ce->name,name)) return ce->val;
ce++;
}
return INT_MIN;
}
/* Get enum name from value. If no match is found NULL is returned. */
const char *configEnumGetName(configEnum *ce, int val) {
while(ce->name != NULL) {
if (ce->val == val) return ce->name;
ce++;
}
return NULL;
}
/* Wrapper for configEnumGetName() returning "unknown" insetad of NULL if
* there is no match. */
const char *configEnumGetNameOrUnknown(configEnum *ce, int val) {
const char *name = configEnumGetName(ce,val);
return name ? name : "unknown";
}
/* Used for INFO generation. */
const char *evictPolicyToString(void) {
return configEnumGetNameOrUnknown(maxmemory_policy_enum,server.maxmemory_policy);
}
/*-----------------------------------------------------------------------------
* Config file parsing
*----------------------------------------------------------------------------*/
int yesnotoi(char *s) {
if (!strcasecmp(s,"yes")) return 1;
else if (!strcasecmp(s,"no")) return 0;
else return -1;
}
void appendServerSaveParams(time_t seconds, int changes) {
server.saveparams = zrealloc(server.saveparams,sizeof(struct saveparam)*(server.saveparamslen+1));
server.saveparams[server.saveparamslen].seconds = seconds;
server.saveparams[server.saveparamslen].changes = changes;
server.saveparamslen++;
}
void resetServerSaveParams(void) {
zfree(server.saveparams);
server.saveparams = NULL;
server.saveparamslen = 0;
}
void loadServerConfigFromString(char *config) {
char *err = NULL;
int linenum = 0, totlines, i;
int slaveof_linenum = 0;
sds *lines;
lines = sdssplitlen(config,strlen(config),"\n",1,&totlines);
for (i = 0; i < totlines; i++) {
sds *argv;
int argc;
linenum = i+1;
lines[i] = sdstrim(lines[i]," \t\r\n");
/* Skip comments and blank lines */
if (lines[i][0] == '#' || lines[i][0] == '\0') continue;
/* Split into arguments */
argv = sdssplitargs(lines[i],&argc);
if (argv == NULL) {
err = "Unbalanced quotes in configuration line";
goto loaderr;
}
/* Skip this line if the resulting command vector is empty. */
if (argc == 0) {
sdsfreesplitres(argv,argc);
continue;
}
sdstolower(argv[0]);
/* Execute config directives */
if (!strcasecmp(argv[0],"timeout") && argc == 2) {
server.maxidletime = atoi(argv[1]);
if (server.maxidletime < 0) {
err = "Invalid timeout value"; goto loaderr;
}
} else if (!strcasecmp(argv[0],"tcp-keepalive") && argc == 2) {
server.tcpkeepalive = atoi(argv[1]);
if (server.tcpkeepalive < 0) {
err = "Invalid tcp-keepalive value"; goto loaderr;
}
} else if (!strcasecmp(argv[0],"protected-mode") && argc == 2) {
if ((server.protected_mode = yesnotoi(argv[1])) == -1) {
err = "argument must be 'yes' or 'no'"; goto loaderr;
}
} else if (!strcasecmp(argv[0],"port") && argc == 2) {
server.port = atoi(argv[1]);
if (server.port < 0 || server.port > 65535) {
err = "Invalid port"; goto loaderr;
}
} else if (!strcasecmp(argv[0],"tcp-backlog") && argc == 2) {
server.tcp_backlog = atoi(argv[1]);
if (server.tcp_backlog < 0) {
err = "Invalid backlog value"; goto loaderr;
}
} else if (!strcasecmp(argv[0],"bind") && argc >= 2) {
int j, addresses = argc-1;
if (addresses > CONFIG_BINDADDR_MAX) {
err = "Too many bind addresses specified"; goto loaderr;
}
for (j = 0; j < addresses; j++)
server.bindaddr[j] = zstrdup(argv[j+1]);
server.bindaddr_count = addresses;
} else if (!strcasecmp(argv[0],"unixsocket") && argc == 2) {
server.unixsocket = zstrdup(argv[1]);
} else if (!strcasecmp(argv[0],"unixsocketperm") && argc == 2) {
errno = 0;
server.unixsocketperm = (mode_t)strtol(argv[1], NULL, 8);
if (errno || server.unixsocketperm > 0777) {
err = "Invalid socket file permissions"; goto loaderr;
}
} else if (!strcasecmp(argv[0],"save")) {
if (argc == 3) {
int seconds = atoi(argv[1]);
int changes = atoi(argv[2]);
if (seconds < 1 || changes < 0) {
err = "Invalid save parameters"; goto loaderr;
}
appendServerSaveParams(seconds,changes);
} else if (argc == 2 && !strcasecmp(argv[1],"")) {
resetServerSaveParams();
}
} else if (!strcasecmp(argv[0],"dir") && argc == 2) {
if (chdir(argv[1]) == -1) {
serverLog(LL_WARNING,"Can't chdir to '%s': %s",
argv[1], strerror(errno));
exit(1);
}
} else if (!strcasecmp(argv[0],"loglevel") && argc == 2) {
server.verbosity = configEnumGetValue(loglevel_enum,argv[1]);
if (server.verbosity == INT_MIN) {
err = "Invalid log level. "
"Must be one of debug, verbose, notice, warning";
goto loaderr;
}
} else if (!strcasecmp(argv[0],"logfile") && argc == 2) {
FILE *logfp;
zfree(server.logfile);
server.logfile = zstrdup(argv[1]);
if (server.logfile[0] != '\0') {
/* Test if we are able to open the file. The server will not
* be able to abort just for this problem later... */
logfp = fopen(server.logfile,"a");
if (logfp == NULL) {
err = sdscatprintf(sdsempty(),
"Can't open the log file: %s", strerror(errno));
goto loaderr;
}
fclose(logfp);
}
} else if (!strcasecmp(argv[0],"syslog-enabled") && argc == 2) {
if ((server.syslog_enabled = yesnotoi(argv[1])) == -1) {
err = "argument must be 'yes' or 'no'"; goto loaderr;
}
} else if (!strcasecmp(argv[0],"syslog-ident") && argc == 2) {
if (server.syslog_ident) zfree(server.syslog_ident);
server.syslog_ident = zstrdup(argv[1]);
} else if (!strcasecmp(argv[0],"syslog-facility") && argc == 2) {
server.syslog_facility =
configEnumGetValue(syslog_facility_enum,argv[1]);
if (server.syslog_facility == INT_MIN) {
err = "Invalid log facility. Must be one of USER or between LOCAL0-LOCAL7";
goto loaderr;
}
} else if (!strcasecmp(argv[0],"databases") && argc == 2) {
server.dbnum = atoi(argv[1]);
if (server.dbnum < 1) {
err = "Invalid number of databases"; goto loaderr;
}
} else if (!strcasecmp(argv[0],"include") && argc == 2) {
loadServerConfig(argv[1],NULL);
} else if (!strcasecmp(argv[0],"maxclients") && argc == 2) {
server.maxclients = atoi(argv[1]);
if (server.maxclients < 1) {
err = "Invalid max clients limit"; goto loaderr;
}
} else if (!strcasecmp(argv[0],"maxmemory") && argc == 2) {
server.maxmemory = memtoll(argv[1],NULL);
} else if (!strcasecmp(argv[0],"maxmemory-policy") && argc == 2) {
server.maxmemory_policy =
configEnumGetValue(maxmemory_policy_enum,argv[1]);
if (server.maxmemory_policy == INT_MIN) {
err = "Invalid maxmemory policy";
goto loaderr;
}
} else if (!strcasecmp(argv[0],"maxmemory-samples") && argc == 2) {
server.maxmemory_samples = atoi(argv[1]);
if (server.maxmemory_samples <= 0) {
err = "maxmemory-samples must be 1 or greater";
goto loaderr;
}
} else if (!strcasecmp(argv[0],"slaveof") && argc == 3) {
slaveof_linenum = linenum;
server.masterhost = sdsnew(argv[1]);
server.masterport = atoi(argv[2]);
server.repl_state = REPL_STATE_CONNECT;
} else if (!strcasecmp(argv[0],"repl-ping-slave-period") && argc == 2) {
server.repl_ping_slave_period = atoi(argv[1]);
if (server.repl_ping_slave_period <= 0) {
err = "repl-ping-slave-period must be 1 or greater";
goto loaderr;
}
} else if (!strcasecmp(argv[0],"repl-timeout") && argc == 2) {
server.repl_timeout = atoi(argv[1]);
if (server.repl_timeout <= 0) {
err = "repl-timeout must be 1 or greater";
goto loaderr;
}
} else if (!strcasecmp(argv[0],"repl-disable-tcp-nodelay") && argc==2) {
if ((server.repl_disable_tcp_nodelay = yesnotoi(argv[1])) == -1) {
err = "argument must be 'yes' or 'no'"; goto loaderr;
}
} else if (!strcasecmp(argv[0],"repl-diskless-sync") && argc==2) {
if ((server.repl_diskless_sync = yesnotoi(argv[1])) == -1) {
err = "argument must be 'yes' or 'no'"; goto loaderr;
}
} else if (!strcasecmp(argv[0],"repl-diskless-sync-delay") && argc==2) {
server.repl_diskless_sync_delay = atoi(argv[1]);
if (server.repl_diskless_sync_delay < 0) {
err = "repl-diskless-sync-delay can't be negative";
goto loaderr;
}
} else if (!strcasecmp(argv[0],"repl-backlog-size") && argc == 2) {
long long size = memtoll(argv[1],NULL);
if (size <= 0) {
err = "repl-backlog-size must be 1 or greater.";
goto loaderr;
}
resizeReplicationBacklog(size);
} else if (!strcasecmp(argv[0],"repl-backlog-ttl") && argc == 2) {
server.repl_backlog_time_limit = atoi(argv[1]);
if (server.repl_backlog_time_limit < 0) {
err = "repl-backlog-ttl can't be negative ";
goto loaderr;
}
} else if (!strcasecmp(argv[0],"masterauth") && argc == 2) {
zfree(server.masterauth);
server.masterauth = zstrdup(argv[1]);
} else if (!strcasecmp(argv[0],"slave-serve-stale-data") && argc == 2) {
if ((server.repl_serve_stale_data = yesnotoi(argv[1])) == -1) {
err = "argument must be 'yes' or 'no'"; goto loaderr;
}
} else if (!strcasecmp(argv[0],"slave-read-only") && argc == 2) {
if ((server.repl_slave_ro = yesnotoi(argv[1])) == -1) {
err = "argument must be 'yes' or 'no'"; goto loaderr;
}
} else if (!strcasecmp(argv[0],"rdbcompression") && argc == 2) {
if ((server.rdb_compression = yesnotoi(argv[1])) == -1) {
err = "argument must be 'yes' or 'no'"; goto loaderr;
}
} else if (!strcasecmp(argv[0],"rdbchecksum") && argc == 2) {
if ((server.rdb_checksum = yesnotoi(argv[1])) == -1) {
err = "argument must be 'yes' or 'no'"; goto loaderr;
}
} else if (!strcasecmp(argv[0],"activerehashing") && argc == 2) {
if ((server.activerehashing = yesnotoi(argv[1])) == -1) {
err = "argument must be 'yes' or 'no'"; goto loaderr;
}
} else if (!strcasecmp(argv[0],"daemonize") && argc == 2) {
if ((server.daemonize = yesnotoi(argv[1])) == -1) {
err = "argument must be 'yes' or 'no'"; goto loaderr;
}
} else if (!strcasecmp(argv[0],"hz") && argc == 2) {
server.hz = atoi(argv[1]);
if (server.hz < CONFIG_MIN_HZ) server.hz = CONFIG_MIN_HZ;
if (server.hz > CONFIG_MAX_HZ) server.hz = CONFIG_MAX_HZ;
} else if (!strcasecmp(argv[0],"appendonly") && argc == 2) {
int yes;
if ((yes = yesnotoi(argv[1])) == -1) {
err = "argument must be 'yes' or 'no'"; goto loaderr;
}
server.aof_state = yes ? AOF_ON : AOF_OFF;
} else if (!strcasecmp(argv[0],"appendfilename") && argc == 2) {
if (!pathIsBaseName(argv[1])) {
err = "appendfilename can't be a path, just a filename";
goto loaderr;
}
zfree(server.aof_filename);
server.aof_filename = zstrdup(argv[1]);
} else if (!strcasecmp(argv[0],"no-appendfsync-on-rewrite")
&& argc == 2) {
if ((server.aof_no_fsync_on_rewrite= yesnotoi(argv[1])) == -1) {
err = "argument must be 'yes' or 'no'"; goto loaderr;
}
} else if (!strcasecmp(argv[0],"appendfsync") && argc == 2) {
server.aof_fsync = configEnumGetValue(aof_fsync_enum,argv[1]);
if (server.aof_fsync == INT_MIN) {
err = "argument must be 'no', 'always' or 'everysec'";
goto loaderr;
}
} else if (!strcasecmp(argv[0],"auto-aof-rewrite-percentage") &&
argc == 2)
{
server.aof_rewrite_perc = atoi(argv[1]);
if (server.aof_rewrite_perc < 0) {
err = "Invalid negative percentage for AOF auto rewrite";
goto loaderr;
}
} else if (!strcasecmp(argv[0],"auto-aof-rewrite-min-size") &&
argc == 2)
{
server.aof_rewrite_min_size = memtoll(argv[1],NULL);
} else if (!strcasecmp(argv[0],"aof-rewrite-incremental-fsync") &&
argc == 2)
{
if ((server.aof_rewrite_incremental_fsync =
yesnotoi(argv[1])) == -1) {
err = "argument must be 'yes' or 'no'"; goto loaderr;
}
} else if (!strcasecmp(argv[0],"aof-load-truncated") && argc == 2) {
if ((server.aof_load_truncated = yesnotoi(argv[1])) == -1) {
err = "argument must be 'yes' or 'no'"; goto loaderr;
}
} else if (!strcasecmp(argv[0],"requirepass") && argc == 2) {
if (strlen(argv[1]) > CONFIG_AUTHPASS_MAX_LEN) {
err = "Password is longer than CONFIG_AUTHPASS_MAX_LEN";
goto loaderr;
}
server.requirepass = zstrdup(argv[1]);
} else if (!strcasecmp(argv[0],"pidfile") && argc == 2) {
zfree(server.pidfile);
server.pidfile = zstrdup(argv[1]);
} else if (!strcasecmp(argv[0],"dbfilename") && argc == 2) {
if (!pathIsBaseName(argv[1])) {
err = "dbfilename can't be a path, just a filename";
goto loaderr;
}
zfree(server.rdb_filename);
server.rdb_filename = zstrdup(argv[1]);
} else if (!strcasecmp(argv[0],"hash-max-ziplist-entries") && argc == 2) {
server.hash_max_ziplist_entries = memtoll(argv[1], NULL);
} else if (!strcasecmp(argv[0],"hash-max-ziplist-value") && argc == 2) {
server.hash_max_ziplist_value = memtoll(argv[1], NULL);
} else if (!strcasecmp(argv[0],"list-max-ziplist-entries") && argc == 2){
/* DEAD OPTION */
} else if (!strcasecmp(argv[0],"list-max-ziplist-value") && argc == 2) {
/* DEAD OPTION */
} else if (!strcasecmp(argv[0],"list-max-ziplist-size") && argc == 2) {
server.list_max_ziplist_size = atoi(argv[1]);
} else if (!strcasecmp(argv[0],"list-compress-depth") && argc == 2) {
server.list_compress_depth = atoi(argv[1]);
} else if (!strcasecmp(argv[0],"set-max-intset-entries") && argc == 2) {
server.set_max_intset_entries = memtoll(argv[1], NULL);
} else if (!strcasecmp(argv[0],"zset-max-ziplist-entries") && argc == 2) {
server.zset_max_ziplist_entries = memtoll(argv[1], NULL);
} else if (!strcasecmp(argv[0],"zset-max-ziplist-value") && argc == 2) {
server.zset_max_ziplist_value = memtoll(argv[1], NULL);
} else if (!strcasecmp(argv[0],"hll-sparse-max-bytes") && argc == 2) {
server.hll_sparse_max_bytes = memtoll(argv[1], NULL);
} else if (!strcasecmp(argv[0],"rename-command") && argc == 3) {
struct redisCommand *cmd = lookupCommand(argv[1]);
int retval;
if (!cmd) {
err = "No such command in rename-command";
goto loaderr;
}
/* If the target command name is the empty string we just
* remove it from the command table. */
retval = dictDelete(server.commands, argv[1]);
serverAssert(retval == DICT_OK);
/* Otherwise we re-add the command under a different name. */
if (sdslen(argv[2]) != 0) {
sds copy = sdsdup(argv[2]);
retval = dictAdd(server.commands, copy, cmd);
if (retval != DICT_OK) {
sdsfree(copy);
err = "Target command name already exists"; goto loaderr;
}
}
} else if (!strcasecmp(argv[0],"cluster-enabled") && argc == 2) {
if ((server.cluster_enabled = yesnotoi(argv[1])) == -1) {
err = "argument must be 'yes' or 'no'"; goto loaderr;
}
} else if (!strcasecmp(argv[0],"cluster-config-file") && argc == 2) {
zfree(server.cluster_configfile);
server.cluster_configfile = zstrdup(argv[1]);
} else if (!strcasecmp(argv[0],"cluster-require-full-coverage") &&
argc == 2)
{
if ((server.cluster_require_full_coverage = yesnotoi(argv[1])) == -1)
{
err = "argument must be 'yes' or 'no'"; goto loaderr;
}
} else if (!strcasecmp(argv[0],"cluster-node-timeout") && argc == 2) {
server.cluster_node_timeout = strtoll(argv[1],NULL,10);
if (server.cluster_node_timeout <= 0) {
err = "cluster node timeout must be 1 or greater"; goto loaderr;
}
} else if (!strcasecmp(argv[0],"cluster-migration-barrier")
&& argc == 2)
{
server.cluster_migration_barrier = atoi(argv[1]);
if (server.cluster_migration_barrier < 0) {
err = "cluster migration barrier must zero or positive";
goto loaderr;
}
} else if (!strcasecmp(argv[0],"cluster-slave-validity-factor")
&& argc == 2)
{
server.cluster_slave_validity_factor = atoi(argv[1]);
if (server.cluster_slave_validity_factor < 0) {
err = "cluster slave validity factor must be zero or positive";
goto loaderr;
}
} else if (!strcasecmp(argv[0],"lua-time-limit") && argc == 2) {
server.lua_time_limit = strtoll(argv[1],NULL,10);
} else if (!strcasecmp(argv[0],"slowlog-log-slower-than") &&
argc == 2)
{
server.slowlog_log_slower_than = strtoll(argv[1],NULL,10);
} else if (!strcasecmp(argv[0],"latency-monitor-threshold") &&
argc == 2)
{
server.latency_monitor_threshold = strtoll(argv[1],NULL,10);
if (server.latency_monitor_threshold < 0) {
err = "The latency threshold can't be negative";
goto loaderr;
}
} else if (!strcasecmp(argv[0],"slowlog-max-len") && argc == 2) {
server.slowlog_max_len = strtoll(argv[1],NULL,10);
} else if (!strcasecmp(argv[0],"client-output-buffer-limit") &&
argc == 5)
{
int class = getClientTypeByName(argv[1]);
unsigned long long hard, soft;
int soft_seconds;
if (class == -1 || class == CLIENT_TYPE_MASTER) {
err = "Unrecognized client limit class: the user specified "
"an invalid one, or 'master' which has no buffer limits.";
goto loaderr;
}
hard = memtoll(argv[2],NULL);
soft = memtoll(argv[3],NULL);
soft_seconds = atoi(argv[4]);
if (soft_seconds < 0) {
err = "Negative number of seconds in soft limit is invalid";
goto loaderr;
}
server.client_obuf_limits[class].hard_limit_bytes = hard;
server.client_obuf_limits[class].soft_limit_bytes = soft;
server.client_obuf_limits[class].soft_limit_seconds = soft_seconds;
} else if (!strcasecmp(argv[0],"stop-writes-on-bgsave-error") &&
argc == 2) {
if ((server.stop_writes_on_bgsave_err = yesnotoi(argv[1])) == -1) {
err = "argument must be 'yes' or 'no'"; goto loaderr;
}
} else if (!strcasecmp(argv[0],"slave-priority") && argc == 2) {
server.slave_priority = atoi(argv[1]);
} else if (!strcasecmp(argv[0],"slave-announce-ip") && argc == 2) {
zfree(server.slave_announce_ip);
server.slave_announce_ip = zstrdup(argv[1]);
} else if (!strcasecmp(argv[0],"slave-announce-port") && argc == 2) {
server.slave_announce_port = atoi(argv[1]);
if (server.slave_announce_port < 0 ||
server.slave_announce_port > 65535)
{
err = "Invalid port"; goto loaderr;
}
} else if (!strcasecmp(argv[0],"min-slaves-to-write") && argc == 2) {
server.repl_min_slaves_to_write = atoi(argv[1]);
if (server.repl_min_slaves_to_write < 0) {
err = "Invalid value for min-slaves-to-write."; goto loaderr;
}
} else if (!strcasecmp(argv[0],"min-slaves-max-lag") && argc == 2) {
server.repl_min_slaves_max_lag = atoi(argv[1]);
if (server.repl_min_slaves_max_lag < 0) {
err = "Invalid value for min-slaves-max-lag."; goto loaderr;
}
} else if (!strcasecmp(argv[0],"notify-keyspace-events") && argc == 2) {
int flags = keyspaceEventsStringToFlags(argv[1]);
if (flags == -1) {
err = "Invalid event class character. Use 'g$lshzxeA'.";
goto loaderr;
}
server.notify_keyspace_events = flags;
} else if (!strcasecmp(argv[0],"supervised") && argc == 2) {
server.supervised_mode =
configEnumGetValue(supervised_mode_enum,argv[1]);
if (server.supervised_mode == INT_MIN) {
err = "Invalid option for 'supervised'. "
"Allowed values: 'upstart', 'systemd', 'auto', or 'no'";
goto loaderr;
}
} else if (!strcasecmp(argv[0],"sentinel")) {
/* argc == 1 is handled by main() as we need to enter the sentinel
* mode ASAP. */
if (argc != 1) {
if (!server.sentinel_mode) {
err = "sentinel directive while not in sentinel mode";
goto loaderr;
}
err = sentinelHandleConfiguration(argv+1,argc-1);
if (err) goto loaderr;
}
} else {
err = "Bad directive or wrong number of arguments"; goto loaderr;
}
sdsfreesplitres(argv,argc);
}
/* Sanity checks. */
if (server.cluster_enabled && server.masterhost) {
linenum = slaveof_linenum;
i = linenum-1;
err = "slaveof directive not allowed in cluster mode";
goto loaderr;
}
sdsfreesplitres(lines,totlines);
return;
loaderr:
fprintf(stderr, "\n*** FATAL CONFIG FILE ERROR ***\n");
fprintf(stderr, "Reading the configuration file, at line %d\n", linenum);
fprintf(stderr, ">>> '%s'\n", lines[i]);
fprintf(stderr, "%s\n", err);
exit(1);
}
/* Load the server configuration from the specified filename.
* The function appends the additional configuration directives stored
* in the 'options' string to the config file before loading.
*
* Both filename and options can be NULL, in such a case are considered
* empty. This way loadServerConfig can be used to just load a file or
* just load a string. */
void loadServerConfig(char *filename, char *options) {
sds config = sdsempty();
char buf[CONFIG_MAX_LINE+1];
/* Load the file content */
if (filename) {
FILE *fp;
if (filename[0] == '-' && filename[1] == '\0') {
fp = stdin;
} else {
if ((fp = fopen(filename,"r")) == NULL) {
serverLog(LL_WARNING,
"Fatal error, can't open config file '%s'", filename);
exit(1);
}
}
while(fgets(buf,CONFIG_MAX_LINE+1,fp) != NULL)
config = sdscat(config,buf);
if (fp != stdin) fclose(fp);
}
/* Append the additional options */
if (options) {
config = sdscat(config,"\n");
config = sdscat(config,options);
}
loadServerConfigFromString(config);
sdsfree(config);
}
/*-----------------------------------------------------------------------------
* CONFIG SET implementation
*----------------------------------------------------------------------------*/
#define config_set_bool_field(_name,_var) \
} else if (!strcasecmp(c->argv[2]->ptr,_name)) { \
int yn = yesnotoi(o->ptr); \
if (yn == -1) goto badfmt; \
_var = yn;
#define config_set_numerical_field(_name,_var,min,max) \
} else if (!strcasecmp(c->argv[2]->ptr,_name)) { \
if (getLongLongFromObject(o,&ll) == C_ERR) goto badfmt; \
if (min != LLONG_MIN && ll < min) goto badfmt; \
if (max != LLONG_MAX && ll > max) goto badfmt; \
_var = ll;
#define config_set_memory_field(_name,_var) \
} else if (!strcasecmp(c->argv[2]->ptr,_name)) { \
ll = memtoll(o->ptr,&err); \
if (err || ll < 0) goto badfmt; \
_var = ll;
#define config_set_enum_field(_name,_var,_enumvar) \
} else if (!strcasecmp(c->argv[2]->ptr,_name)) { \
int enumval = configEnumGetValue(_enumvar,o->ptr); \
if (enumval == INT_MIN) goto badfmt; \
_var = enumval;
#define config_set_special_field(_name) \
} else if (!strcasecmp(c->argv[2]->ptr,_name)) {
#define config_set_else } else
void configSetCommand(client *c) {
robj *o;
long long ll;
int err;
serverAssertWithInfo(c,c->argv[2],sdsEncodedObject(c->argv[2]));
serverAssertWithInfo(c,c->argv[3],sdsEncodedObject(c->argv[3]));
o = c->argv[3];
if (0) { /* this starts the config_set macros else-if chain. */
/* Special fields that can't be handled with general macros. */
config_set_special_field("dbfilename") {
if (!pathIsBaseName(o->ptr)) {
addReplyError(c, "dbfilename can't be a path, just a filename");
return;
}
zfree(server.rdb_filename);
server.rdb_filename = zstrdup(o->ptr);
} config_set_special_field("requirepass") {
if (sdslen(o->ptr) > CONFIG_AUTHPASS_MAX_LEN) goto badfmt;
zfree(server.requirepass);
server.requirepass = ((char*)o->ptr)[0] ? zstrdup(o->ptr) : NULL;
} config_set_special_field("masterauth") {
zfree(server.masterauth);
server.masterauth = ((char*)o->ptr)[0] ? zstrdup(o->ptr) : NULL;
} config_set_special_field("maxclients") {
int orig_value = server.maxclients;
if (getLongLongFromObject(o,&ll) == C_ERR || ll < 1) goto badfmt;
/* Try to check if the OS is capable of supporting so many FDs. */
server.maxclients = ll;
if (ll > orig_value) {
adjustOpenFilesLimit();
if (server.maxclients != ll) {
addReplyErrorFormat(c,"The operating system is not able to handle the specified number of clients, try with %d", server.maxclients);
server.maxclients = orig_value;
return;
}
if ((unsigned int) aeGetSetSize(server.el) <
server.maxclients + CONFIG_FDSET_INCR)
{
if (aeResizeSetSize(server.el,
server.maxclients + CONFIG_FDSET_INCR) == AE_ERR)
{
addReplyError(c,"The event loop API used by Redis is not able to handle the specified number of clients");
server.maxclients = orig_value;
return;
}
}
}
} config_set_special_field("appendonly") {
int enable = yesnotoi(o->ptr);
if (enable == -1) goto badfmt;
if (enable == 0 && server.aof_state != AOF_OFF) {
stopAppendOnly();
} else if (enable && server.aof_state == AOF_OFF) {
if (startAppendOnly() == C_ERR) {
addReplyError(c,
"Unable to turn on AOF. Check server logs.");
return;
}
}
} config_set_special_field("save") {
int vlen, j;
sds *v = sdssplitlen(o->ptr,sdslen(o->ptr)," ",1,&vlen);
/* Perform sanity check before setting the new config:
* - Even number of args
* - Seconds >= 1, changes >= 0 */
if (vlen & 1) {
sdsfreesplitres(v,vlen);
goto badfmt;
}
for (j = 0; j < vlen; j++) {
char *eptr;
long val;
val = strtoll(v[j], &eptr, 10);
if (eptr[0] != '\0' ||
((j & 1) == 0 && val < 1) ||
((j & 1) == 1 && val < 0)) {
sdsfreesplitres(v,vlen);
goto badfmt;
}
}
/* Finally set the new config */
resetServerSaveParams();
for (j = 0; j < vlen; j += 2) {
time_t seconds;
int changes;
seconds = strtoll(v[j],NULL,10);
changes = strtoll(v[j+1],NULL,10);
appendServerSaveParams(seconds, changes);
}
sdsfreesplitres(v,vlen);
} config_set_special_field("dir") {
if (chdir((char*)o->ptr) == -1) {
addReplyErrorFormat(c,"Changing directory: %s", strerror(errno));
return;
}
} config_set_special_field("client-output-buffer-limit") {
int vlen, j;
sds *v = sdssplitlen(o->ptr,sdslen(o->ptr)," ",1,&vlen);
/* We need a multiple of 4: <class> <hard> <soft> <soft_seconds> */
if (vlen % 4) {
sdsfreesplitres(v,vlen);
goto badfmt;
}
/* Sanity check of single arguments, so that we either refuse the
* whole configuration string or accept it all, even if a single
* error in a single client class is present. */
for (j = 0; j < vlen; j++) {
long val;
if ((j % 4) == 0) {
int class = getClientTypeByName(v[j]);
if (class == -1 || class == CLIENT_TYPE_MASTER) {
sdsfreesplitres(v,vlen);
goto badfmt;
}
} else {
val = memtoll(v[j], &err);
if (err || val < 0) {
sdsfreesplitres(v,vlen);
goto badfmt;
}
}
}
/* Finally set the new config */
for (j = 0; j < vlen; j += 4) {
int class;
unsigned long long hard, soft;
int soft_seconds;
class = getClientTypeByName(v[j]);
hard = strtoll(v[j+1],NULL,10);
soft = strtoll(v[j+2],NULL,10);
soft_seconds = strtoll(v[j+3],NULL,10);
server.client_obuf_limits[class].hard_limit_bytes = hard;
server.client_obuf_limits[class].soft_limit_bytes = soft;
server.client_obuf_limits[class].soft_limit_seconds = soft_seconds;
}
sdsfreesplitres(v,vlen);
} config_set_special_field("notify-keyspace-events") {
int flags = keyspaceEventsStringToFlags(o->ptr);
if (flags == -1) goto badfmt;
server.notify_keyspace_events = flags;
} config_set_special_field("slave-announce-ip") {
zfree(server.slave_announce_ip);
server.slave_announce_ip = ((char*)o->ptr)[0] ? zstrdup(o->ptr) : NULL;
/* Boolean fields.
* config_set_bool_field(name,var). */
} config_set_bool_field(
"rdbcompression", server.rdb_compression) {
} config_set_bool_field(
"repl-disable-tcp-nodelay",server.repl_disable_tcp_nodelay) {
} config_set_bool_field(
"repl-diskless-sync",server.repl_diskless_sync) {
} config_set_bool_field(
"cluster-require-full-coverage",server.cluster_require_full_coverage) {
} config_set_bool_field(
"aof-rewrite-incremental-fsync",server.aof_rewrite_incremental_fsync) {
} config_set_bool_field(
"aof-load-truncated",server.aof_load_truncated) {
} config_set_bool_field(
"slave-serve-stale-data",server.repl_serve_stale_data) {
} config_set_bool_field(
"slave-read-only",server.repl_slave_ro) {
} config_set_bool_field(
"activerehashing",server.activerehashing) {
} config_set_bool_field(
"protected-mode",server.protected_mode) {
} config_set_bool_field(
"stop-writes-on-bgsave-error",server.stop_writes_on_bgsave_err) {
} config_set_bool_field(
"no-appendfsync-on-rewrite",server.aof_no_fsync_on_rewrite) {
/* Numerical fields.
* config_set_numerical_field(name,var,min,max) */
} config_set_numerical_field(
"tcp-keepalive",server.tcpkeepalive,0,LLONG_MAX) {
} config_set_numerical_field(
"maxmemory-samples",server.maxmemory_samples,1,LLONG_MAX) {
} config_set_numerical_field(
"timeout",server.maxidletime,0,LONG_MAX) {
} config_set_numerical_field(
"auto-aof-rewrite-percentage",server.aof_rewrite_perc,0,LLONG_MAX){
} config_set_numerical_field(
"hash-max-ziplist-entries",server.hash_max_ziplist_entries,0,LLONG_MAX) {
} config_set_numerical_field(
"hash-max-ziplist-value",server.hash_max_ziplist_value,0,LLONG_MAX) {
} config_set_numerical_field(
"list-max-ziplist-size",server.list_max_ziplist_size,INT_MIN,INT_MAX) {
} config_set_numerical_field(
"list-compress-depth",server.list_compress_depth,0,INT_MAX) {
} config_set_numerical_field(
"set-max-intset-entries",server.set_max_intset_entries,0,LLONG_MAX) {
} config_set_numerical_field(
"zset-max-ziplist-entries",server.zset_max_ziplist_entries,0,LLONG_MAX) {
} config_set_numerical_field(
"zset-max-ziplist-value",server.zset_max_ziplist_value,0,LLONG_MAX) {
} config_set_numerical_field(
"hll-sparse-max-bytes",server.hll_sparse_max_bytes,0,LLONG_MAX) {
} config_set_numerical_field(
"lua-time-limit",server.lua_time_limit,0,LLONG_MAX) {
} config_set_numerical_field(
"slowlog-log-slower-than",server.slowlog_log_slower_than,0,LLONG_MAX) {
} config_set_numerical_field(
"slowlog-max-len",ll,0,LLONG_MAX) {
/* Cast to unsigned. */
server.slowlog_max_len = (unsigned)ll;
} config_set_numerical_field(
"latency-monitor-threshold",server.latency_monitor_threshold,0,LLONG_MAX){
} config_set_numerical_field(
"repl-ping-slave-period",server.repl_ping_slave_period,1,LLONG_MAX) {
} config_set_numerical_field(
"repl-timeout",server.repl_timeout,1,LLONG_MAX) {
} config_set_numerical_field(
"repl-backlog-ttl",server.repl_backlog_time_limit,0,LLONG_MAX) {
} config_set_numerical_field(
"repl-diskless-sync-delay",server.repl_diskless_sync_delay,0,LLONG_MAX) {
} config_set_numerical_field(
"slave-priority",server.slave_priority,0,LLONG_MAX) {
} config_set_numerical_field(
"slave-announce-port",server.slave_announce_port,0,65535) {
} config_set_numerical_field(
"min-slaves-to-write",server.repl_min_slaves_to_write,0,LLONG_MAX) {
refreshGoodSlavesCount();
} config_set_numerical_field(
"min-slaves-max-lag",server.repl_min_slaves_max_lag,0,LLONG_MAX) {
refreshGoodSlavesCount();
} config_set_numerical_field(
"cluster-node-timeout",server.cluster_node_timeout,0,LLONG_MAX) {
} config_set_numerical_field(
"cluster-migration-barrier",server.cluster_migration_barrier,0,LLONG_MAX){
} config_set_numerical_field(
"cluster-slave-validity-factor",server.cluster_slave_validity_factor,0,LLONG_MAX) {
} config_set_numerical_field(
"hz",server.hz,0,LLONG_MAX) {
/* Hz is more an hint from the user, so we accept values out of range
* but cap them to reasonable values. */
if (server.hz < CONFIG_MIN_HZ) server.hz = CONFIG_MIN_HZ;
if (server.hz > CONFIG_MAX_HZ) server.hz = CONFIG_MAX_HZ;
} config_set_numerical_field(
"watchdog-period",ll,0,LLONG_MAX) {
if (ll)
enableWatchdog(ll);
else
disableWatchdog();
/* Memory fields.
* config_set_memory_field(name,var) */
} config_set_memory_field("maxmemory",server.maxmemory) {
if (server.maxmemory) {
if (server.maxmemory < zmalloc_used_memory()) {
serverLog(LL_WARNING,"WARNING: the new maxmemory value set via CONFIG SET is smaller than the current memory usage. This will result in keys eviction and/or inability to accept new write commands depending on the maxmemory-policy.");
}
freeMemoryIfNeeded();
}
} config_set_memory_field("repl-backlog-size",ll) {
resizeReplicationBacklog(ll);
} config_set_memory_field("auto-aof-rewrite-min-size",ll) {
server.aof_rewrite_min_size = ll;
/* Enumeration fields.
* config_set_enum_field(name,var,enum_var) */
} config_set_enum_field(
"loglevel",server.verbosity,loglevel_enum) {
} config_set_enum_field(
"maxmemory-policy",server.maxmemory_policy,maxmemory_policy_enum) {
} config_set_enum_field(
"appendfsync",server.aof_fsync,aof_fsync_enum) {
/* Everyhing else is an error... */
} config_set_else {