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config.cpp
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2840 lines (2503 loc) · 122 KB
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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>
const char *KEYDB_SET_VERSION = KEYDB_REAL_VERSION;
/*-----------------------------------------------------------------------------
* 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-lfu", MAXMEMORY_VOLATILE_LFU},
{"volatile-random",MAXMEMORY_VOLATILE_RANDOM},
{"volatile-ttl",MAXMEMORY_VOLATILE_TTL},
{"allkeys-lru",MAXMEMORY_ALLKEYS_LRU},
{"allkeys-lfu",MAXMEMORY_ALLKEYS_LFU},
{"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}
};
configEnum repl_diskless_load_enum[] = {
{"disabled", REPL_DISKLESS_LOAD_DISABLED},
{"on-empty-db", REPL_DISKLESS_LOAD_WHEN_DB_EMPTY},
{"swapdb", REPL_DISKLESS_LOAD_SWAPDB},
{NULL, 0}
};
configEnum tls_auth_clients_enum[] = {
{"no", TLS_CLIENT_AUTH_NO},
{"yes", TLS_CLIENT_AUTH_YES},
{"optional", TLS_CLIENT_AUTH_OPTIONAL},
{NULL, 0}
};
configEnum oom_score_adj_enum[] = {
{"no", OOM_SCORE_ADJ_NO},
{"yes", OOM_SCORE_RELATIVE},
{"relative", OOM_SCORE_RELATIVE},
{"absolute", OOM_SCORE_ADJ_ABSOLUTE},
{NULL, 0}
};
configEnum acl_pubsub_default_enum[] = {
{"allchannels", USER_FLAG_ALLCHANNELS},
{"resetchannels", 0},
{NULL, 0}
};
configEnum sanitize_dump_payload_enum[] = {
{"no", SANITIZE_DUMP_NO},
{"yes", SANITIZE_DUMP_YES},
{"clients", SANITIZE_DUMP_CLIENTS},
{NULL, 0}
};
/* Output buffer limits presets. */
clientBufferLimitsConfig clientBufferLimitsDefaults[CLIENT_TYPE_OBUF_COUNT] = {
{0, 0, 0}, /* normal */
{1024*1024*256, 1024*1024*64, 60}, /* replica */
{1024*1024*32, 1024*1024*8, 60} /* pubsub */
};
/* OOM Score defaults */
int configOOMScoreAdjValuesDefaults[CONFIG_OOM_COUNT] = { 0, 200, 800 };
/* Generic config infrastructure function pointers
* int is_valid_fn(val, err)
* Return 1 when val is valid, and 0 when invalid.
* Optionally set err to a static error string.
* int update_fn(val, prev, err)
* This function is called only for CONFIG SET command (not at config file parsing)
* It is called after the actual config is applied,
* Return 1 for success, and 0 for failure.
* Optionally set err to a static error string.
* On failure the config change will be reverted.
*/
/* Configuration values that require no special handling to set, get, load or
* rewrite. */
typedef struct boolConfigData {
int *config; /* The pointer to the server config this value is stored in */
int default_value; /* The default value of the config on rewrite */
int (*is_valid_fn)(int val, const char **err); /* Optional function to check validity of new value (generic doc above) */
int (*update_fn)(int val, int prev, const char **err); /* Optional function to apply new value at runtime (generic doc above) */
} boolConfigData;
typedef struct stringConfigData {
char **config; /* Pointer to the server config this value is stored in. */
const char *default_value; /* Default value of the config on rewrite. */
int (*is_valid_fn)(char* val, const char **err); /* Optional function to check validity of new value (generic doc above) */
int (*update_fn)(char* val, char* prev, const char **err); /* Optional function to apply new value at runtime (generic doc above) */
int convert_empty_to_null; /* Boolean indicating if empty strings should
be stored as a NULL value. */
} stringConfigData;
typedef struct sdsConfigData {
sds *config; /* Pointer to the server config this value is stored in. */
const char *default_value; /* Default value of the config on rewrite. */
int (*is_valid_fn)(sds val, const char **err); /* Optional function to check validity of new value (generic doc above) */
int (*update_fn)(sds val, sds prev, const char **err); /* Optional function to apply new value at runtime (generic doc above) */
int convert_empty_to_null; /* Boolean indicating if empty SDS strings should
be stored as a NULL value. */
} sdsConfigData;
typedef struct enumConfigData {
int *config; /* The pointer to the server config this value is stored in */
configEnum *enum_value; /* The underlying enum type this data represents */
int default_value; /* The default value of the config on rewrite */
int (*is_valid_fn)(int val, const char **err); /* Optional function to check validity of new value (generic doc above) */
int (*update_fn)(int val, int prev, const char **err); /* Optional function to apply new value at runtime (generic doc above) */
} enumConfigData;
typedef enum numericType {
NUMERIC_TYPE_INT,
NUMERIC_TYPE_UINT,
NUMERIC_TYPE_LONG,
NUMERIC_TYPE_ULONG,
NUMERIC_TYPE_LONG_LONG,
NUMERIC_TYPE_ULONG_LONG,
NUMERIC_TYPE_SIZE_T,
NUMERIC_TYPE_SSIZE_T,
NUMERIC_TYPE_OFF_T,
NUMERIC_TYPE_TIME_T,
} numericType;
typedef struct numericConfigData {
int is_memory; /* Indicates if this value can be loaded as a memory value */
long long lower_bound; /* The lower bound of this numeric value */
long long upper_bound; /* The upper bound of this numeric value */
long long default_value; /* The default value of the config on rewrite */
int (*is_valid_fn)(long long val, const char **err); /* Optional function to check validity of new value (generic doc above) */
int (*update_fn)(long long val, long long prev, const char **err); /* Optional function to apply new value at runtime (generic doc above) */
numericType numeric_type; /* An enum indicating the type of this value */
union {
int *i;
unsigned int *ui;
long *l;
unsigned long *ul;
long long *ll;
unsigned long long *ull;
size_t *st;
ssize_t *sst;
off_t *ot;
time_t *tt;
} config; /* The pointer to the numeric config this value is stored in */
} numericConfigData;
typedef union typeData {
boolConfigData yesno;
stringConfigData string;
sdsConfigData sds;
enumConfigData enumd;
numericConfigData numeric;
} typeData;
typedef struct typeInterface {
/* Called on server start, to init the server with default value */
void (*init)(typeData data);
/* Called on server startup and CONFIG SET, returns 1 on success, 0 on error
* and can set a verbose err string, update is true when called from CONFIG SET */
int (*set)(typeData data, sds value, int update, const char **err);
/* Called on CONFIG GET, required to add output to the client */
void (*get)(client *c, typeData data);
/* Called on CONFIG REWRITE, required to rewrite the config state */
void (*rewrite)(typeData data, const char *name, struct rewriteConfigState *state);
} typeInterface;
typedef struct standardConfig {
const char *name; /* The user visible name of this config */
const char *alias; /* An alias that can also be used for this config */
const unsigned int flags; /* Flags for this specific config */
typeInterface interface; /* The function pointers that define the type interface */
typeData data; /* The type specific data exposed used by the interface */
} standardConfig;
#define MODIFIABLE_CONFIG 0 /* This is the implied default for a standard
* config, which is mutable. */
#define IMMUTABLE_CONFIG (1ULL<<0) /* Can this value only be set at startup? */
#define SENSITIVE_CONFIG (1ULL<<1) /* Does this value contain sensitive information */
extern standardConfig configs[];
/*-----------------------------------------------------------------------------
* 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" instead 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,g_pserver->maxmemory_policy);
}
/*-----------------------------------------------------------------------------
* Config file parsing
*----------------------------------------------------------------------------*/
int truefalsetoi(char *s) {
if (!strcasecmp(s,"true")) return 1;
else if (!strcasecmp(s,"false")) return 0;
else return -1;
}
int yesnotoi(char *s) {
if (!strcasecmp(s,"yes")) return 1;
else if (!strcasecmp(s,"no")) return 0;
else return truefalsetoi(s);
}
void appendServerSaveParams(time_t seconds, int changes) {
g_pserver->saveparams = (saveparam*)zrealloc(g_pserver->saveparams,sizeof(struct saveparam)*(g_pserver->saveparamslen+1), MALLOC_LOCAL);
g_pserver->saveparams[g_pserver->saveparamslen].seconds = seconds;
g_pserver->saveparams[g_pserver->saveparamslen].changes = changes;
g_pserver->saveparamslen++;
}
void resetServerSaveParams(void) {
zfree(g_pserver->saveparams);
g_pserver->saveparams = NULL;
g_pserver->saveparamslen = 0;
}
void queueLoadModule(sds path, sds *argv, int argc) {
int i;
struct moduleLoadQueueEntry *loadmod;
loadmod = (moduleLoadQueueEntry*)zmalloc(sizeof(struct moduleLoadQueueEntry), MALLOC_LOCAL);
loadmod->argv = (robj**)zmalloc(sizeof(robj*)*argc, MALLOC_LOCAL);
loadmod->path = sdsnew(path);
loadmod->argc = argc;
for (i = 0; i < argc; i++) {
loadmod->argv[i] = createRawStringObject(argv[i],sdslen(argv[i]));
}
listAddNodeTail(g_pserver->loadmodule_queue,loadmod);
}
/* Parse an array of CONFIG_OOM_COUNT sds strings, validate and populate
* g_pserver->oom_score_adj_values if valid.
*/
static int updateOOMScoreAdjValues(sds *args, const char **err, int apply) {
int i;
int values[CONFIG_OOM_COUNT];
for (i = 0; i < CONFIG_OOM_COUNT; i++) {
char *eptr;
long long val = strtoll(args[i], &eptr, 10);
if (*eptr != '\0' || val < -2000 || val > 2000) {
if (err) *err = "Invalid oom-score-adj-values, elements must be between -2000 and 2000.";
return C_ERR;
}
values[i] = val;
}
/* Verify that the values make sense. If they don't omit a warning but
* keep the configuration, which may still be valid for privileged processes.
*/
if (values[CONFIG_OOM_REPLICA] < values[CONFIG_OOM_MASTER] ||
values[CONFIG_OOM_BGCHILD] < values[CONFIG_OOM_REPLICA]) {
serverLog(LL_WARNING,
"The oom-score-adj-values configuration may not work for non-privileged processes! "
"Please consult the documentation.");
}
/* Store values, retain previous config for rollback in case we fail. */
int old_values[CONFIG_OOM_COUNT];
for (i = 0; i < CONFIG_OOM_COUNT; i++) {
old_values[i] = g_pserver->oom_score_adj_values[i];
g_pserver->oom_score_adj_values[i] = values[i];
}
/* When parsing the config file, we want to apply only when all is done. */
if (!apply)
return C_OK;
/* Update */
if (setOOMScoreAdj(-1) == C_ERR) {
/* Roll back */
for (i = 0; i < CONFIG_OOM_COUNT; i++)
g_pserver->oom_score_adj_values[i] = old_values[i];
if (err)
*err = "Failed to apply oom-score-adj-values configuration, check server logs.";
return C_ERR;
}
return C_OK;
}
void initConfigValues() {
for (standardConfig *config = configs; config->name != NULL; config++) {
config->interface.init(config->data);
}
}
void loadServerConfigFromString(char *config) {
const char *err = NULL;
int linenum = 0, totlines, i;
int slaveof_linenum = 0;
sds *lines;
int save_loaded = 0;
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]);
/* Iterate the configs that are standard */
int match = 0;
for (standardConfig *config = configs; config->name != NULL; config++) {
if ((!strcasecmp(argv[0],config->name) ||
(config->alias && !strcasecmp(argv[0],config->alias))))
{
if (argc != 2) {
err = "wrong number of arguments";
goto loaderr;
}
if (!config->interface.set(config->data, argv[1], 0, &err)) {
goto loaderr;
}
match = 1;
break;
}
}
if (match) {
sdsfreesplitres(argv,argc);
continue;
}
/* Execute config directives */
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;
}
/* Free old bind addresses */
for (j = 0; j < g_pserver->bindaddr_count; j++) {
zfree(g_pserver->bindaddr[j]);
}
for (j = 0; j < addresses; j++)
g_pserver->bindaddr[j] = zstrdup(argv[j+1]);
g_pserver->bindaddr_count = addresses;
} else if (!strcasecmp(argv[0],"unixsocketperm") && argc == 2) {
errno = 0;
g_pserver->unixsocketperm = (mode_t)strtol(argv[1], NULL, 8);
if (errno || g_pserver->unixsocketperm > 0777) {
err = "Invalid socket file permissions"; goto loaderr;
}
} else if (!strcasecmp(argv[0],"save")) {
/* We don't reset save params before loading, because if they're not part
* of the file the defaults should be used.
*/
if (!save_loaded) {
save_loaded = 1;
resetServerSaveParams();
}
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],"logfile") && argc == 2) {
FILE *logfp;
zfree(g_pserver->logfile);
g_pserver->logfile = zstrdup(argv[1]);
if (g_pserver->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(g_pserver->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],"include") && argc == 2) {
loadServerConfig(argv[1], 0, NULL);
} else if ((!strcasecmp(argv[0],"slaveof") ||
!strcasecmp(argv[0],"replicaof")) && argc == 3) {
slaveof_linenum = linenum;
if (!strcasecmp(argv[1], "no") && !strcasecmp(argv[2], "one")) {
if (listLength(g_pserver->masters)) {
listIter li;
listNode *ln;
listRewind(g_pserver->masters, &li);
while ((ln = listNext(&li)))
{
struct redisMaster *mi = (struct redisMaster*)listNodeValue(ln);
sdsfree(mi->masterauth);
zfree(mi->masteruser);
zfree(mi->repl_transfer_tmpfile);
delete mi->staleKeyMap;
zfree(mi);
listDelNode(g_pserver->masters, ln);
}
}
continue;
}
char *ptr;
int port = strtol(argv[2], &ptr, 10);
if (port < 0 || port > 65535 || *ptr != '\0') {
err= "Invalid master port"; goto loaderr;
}
replicationAddMaster(argv[1], port);
} 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;
}
} 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],"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(g_pserver->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(g_pserver->commands, copy, cmd);
if (retval != DICT_OK) {
sdsfree(copy);
err = "Target command name already exists"; goto loaderr;
}
}
} else if (!strcasecmp(argv[0],"cluster-config-file") && argc == 2) {
zfree(g_pserver->cluster_configfile);
g_pserver->cluster_configfile = zstrdup(argv[1]);
} else if (!strcasecmp(argv[0],"client-output-buffer-limit") &&
argc == 5)
{
int type = getClientTypeByName(argv[1]);
unsigned long long hard, soft;
int soft_seconds;
if (type == -1 || type == 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;
}
cserver.client_obuf_limits[type].hard_limit_bytes = hard;
cserver.client_obuf_limits[type].soft_limit_bytes = soft;
cserver.client_obuf_limits[type].soft_limit_seconds = soft_seconds;
} else if (!strcasecmp(argv[0],"oom-score-adj-values") && argc == 1 + CONFIG_OOM_COUNT) {
if (updateOOMScoreAdjValues(&argv[1], &err, 0) == C_ERR) 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;
}
g_pserver->notify_keyspace_events = flags;
} else if (!strcasecmp(argv[0],"user") && argc >= 2) {
int argc_err;
if (ACLAppendUserForLoading(argv,argc,&argc_err) == C_ERR) {
char buf[1024];
const char *errmsg = ACLSetUserStringError();
snprintf(buf,sizeof(buf),"Error in user declaration '%s': %s",
argv[argc_err],errmsg);
err = buf;
goto loaderr;
}
} else if (!strcasecmp(argv[0],"loadmodule") && argc >= 2) {
queueLoadModule(argv[1],&argv[2],argc-2);
} 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 (!g_pserver->sentinel_mode) {
err = "sentinel directive while not in sentinel mode";
goto loaderr;
}
queueSentinelConfig(argv+1,argc-1,linenum,lines[i]);
}
} else if (!strcasecmp(argv[0],"scratch-file-path")) {
#ifdef USE_MEMKIND
storage_init(argv[1], g_pserver->maxmemory);
#else
err = "KeyDB not compliled with scratch-file support.";
goto loaderr;
#endif
} else if ((!strcasecmp(argv[0],"server-threads") || !strcasecmp(argv[0],"io-threads")) && argc == 2) {
cserver.cthreads = atoi(argv[1]);
if (cserver.cthreads <= 0 || cserver.cthreads > MAX_EVENT_LOOPS) {
err = "Invalid number of threads specified";
goto loaderr;
}
} else if (!strcasecmp(argv[0],"server-thread-affinity") && argc == 2) {
if (strcasecmp(argv[1], "true") == 0) {
cserver.fThreadAffinity = TRUE;
} else if (strcasecmp(argv[1], "false") == 0) {
cserver.fThreadAffinity = FALSE;
} else {
int offset = atoi(argv[1]);
if (offset > 0) {
cserver.fThreadAffinity = TRUE;
cserver.threadAffinityOffset = offset-1;
} else {
err = "Unknown argument: server-thread-affinity expects either true or false";
goto loaderr;
}
}
} else if (!strcasecmp(argv[0], "active-replica") && argc == 2) {
g_pserver->fActiveReplica = yesnotoi(argv[1]);
if (g_pserver->fActiveReplica && g_pserver->repl_slave_ro) {
g_pserver->repl_slave_ro = FALSE;
serverLog(LL_NOTICE, "Notice: \"active-replica yes\" implies \"replica-read-only no\"");
}
if (g_pserver->fActiveReplica == -1) {
g_pserver->fActiveReplica = CONFIG_DEFAULT_ACTIVE_REPLICA;
err = "argument must be 'yes' or 'no'"; goto loaderr;
}
} else if (!strcasecmp(argv[0], "version-override") && argc == 2) {
KEYDB_SET_VERSION = zstrdup(argv[1]);
serverLog(LL_WARNING, "Warning version is overriden to: %s\n", KEYDB_SET_VERSION);
} else if (!strcasecmp(argv[0],"testmode") && argc == 2){
g_fTestMode = yesnotoi(argv[1]);
} else if (!strcasecmp(argv[0],"rdbfuzz-mode")) {
// NOP, handled in main
} else if (!strcasecmp(argv[0],"enable-pro")) {
cserver.fUsePro = true;
break;
} else {
err = "Bad directive or wrong number of arguments"; goto loaderr;
}
sdsfreesplitres(argv,argc);
}
/* Sanity checks. */
if (g_pserver->cluster_enabled && listLength(g_pserver->masters)) {
linenum = slaveof_linenum;
i = linenum-1;
err = "replicaof directive not allowed in cluster mode";
goto loaderr;
}
/* To ensure backward compatibility and work while hz is out of range */
if (g_pserver->config_hz < CONFIG_MIN_HZ) g_pserver->config_hz = CONFIG_MIN_HZ;
if (g_pserver->config_hz > CONFIG_MAX_HZ) g_pserver->config_hz = CONFIG_MAX_HZ;
sdsfreesplitres(lines,totlines);
return;
loaderr:
fprintf(stderr, "\n*** FATAL CONFIG FILE ERROR (KeyDB %s) ***\n",
KEYDB_REAL_VERSION);
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 config_from_stdin, char *options) {
sds config = sdsempty();
char buf[CONFIG_MAX_LINE+1];
FILE *fp;
/* Load the file content */
if (filename) {
if ((fp = fopen(filename,"r")) == NULL) {
serverLog(LL_WARNING,
"Fatal error, can't open config file '%s': %s",
filename, strerror(errno));
exit(1);
}
while(fgets(buf,CONFIG_MAX_LINE+1,fp) != NULL)
config = sdscat(config,buf);
fclose(fp);
}
/* Append content from stdin */
if (config_from_stdin) {
serverLog(LL_WARNING,"Reading config from stdin");
fp = stdin;
while(fgets(buf,CONFIG_MAX_LINE+1,fp) != NULL)
config = sdscat(config,buf);
}
/* 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(szFromObj(c->argv[2]),_name)) { \
int yn = yesnotoi(szFromObj(o)); \
if (yn == -1) goto badfmt; \
_var = yn;
#define config_set_numerical_field(_name,_var,min,max) \
} else if (!strcasecmp(szFromObj(c->argv[2]),_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(szFromObj(c->argv[2]),_name)) { \
ll = memtoll(szFromObj(o),&err); \
if (err || ll < 0) goto badfmt; \
_var = ll;
#define config_set_special_field(_name) \
} else if (!strcasecmp(szFromObj(c->argv[2]),_name)) {
#define config_set_special_field_with_alias(_name1,_name2) \
} else if (!strcasecmp(szFromObj(c->argv[2]),_name1) || \
!strcasecmp(szFromObj(c->argv[2]),_name2)) {
#define config_set_else } else
void configSetCommand(client *c) {
robj *o;
long long ll;
int err;
const char *errstr = NULL;
serverAssertWithInfo(c,c->argv[2],sdsEncodedObject(c->argv[2]));
serverAssertWithInfo(c,c->argv[3],sdsEncodedObject(c->argv[3]));
o = c->argv[3];
/* Iterate the configs that are standard */
for (standardConfig *config = configs; config->name != NULL; config++) {
if (!(config->flags & IMMUTABLE_CONFIG) &&
(!strcasecmp(szFromObj(c->argv[2]),config->name) ||
(config->alias && !strcasecmp(szFromObj(c->argv[2]),config->alias))))
{
if (config->flags & SENSITIVE_CONFIG) {
redactClientCommandArgument(c,3);
}
if (!config->interface.set(config->data,szFromObj(o),1,&errstr)) {
goto badfmt;
}
addReply(c,shared.ok);
return;
}
}
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("bind") {
int vlen;
sds *v = sdssplitlen(szFromObj(o),sdslen(szFromObj(o))," ",1,&vlen);
if (vlen < 1 || vlen > CONFIG_BINDADDR_MAX) {
addReplyError(c, "Too many bind addresses specified.");
sdsfreesplitres(v, vlen);
return;
}
if (changeBindAddr(v, vlen, true) == C_ERR) {
addReplyError(c, "Failed to bind to specified addresses.");
sdsfreesplitres(v, vlen);
return;
}
// Now run the config change on the other threads
for (int ithread = 0; ithread < cserver.cthreads; ++ithread) {
if (&g_pserver->rgthreadvar[ithread] != serverTL) {
incrRefCount(o);
aePostFunction(g_pserver->rgthreadvar[ithread].el, [o]{
int vlen;
sds *v = sdssplitlen(szFromObj(o),sdslen(szFromObj(o))," ",1,&vlen);
if (changeBindAddr(v, vlen, false) == C_ERR) {
serverLog(LL_WARNING, "Failed to change the bind address for a thread. Server will still be listening on old addresses.");
}
sdsfreesplitres(v, vlen);
decrRefCount(o);
});
}
}
sdsfreesplitres(v, vlen);
} config_set_special_field("save") {
int vlen, j;
sds *v = sdssplitlen(szFromObj(o),sdslen(szFromObj(o))," ",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*)ptrFromObj(o)) == -1) {
addReplyErrorFormat(c,"Changing directory: %s", strerror(errno));
return;
}
} config_set_special_field("client-output-buffer-limit") {
int vlen, j;
sds *v = sdssplitlen(szFromObj(o),sdslen(szFromObj(o))," ",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 type = getClientTypeByName(v[j]);
if (type == -1 || type == 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) {
unsigned long long hard, soft;
int soft_seconds;
int type = getClientTypeByName(v[j]);
hard = memtoll(v[j+1],NULL);
soft = memtoll(v[j+2],NULL);
soft_seconds = strtoll(v[j+3],NULL,10);
cserver.client_obuf_limits[type].hard_limit_bytes = hard;
cserver.client_obuf_limits[type].soft_limit_bytes = soft;
cserver.client_obuf_limits[type].soft_limit_seconds = soft_seconds;
}
sdsfreesplitres(v,vlen);
} config_set_special_field("oom-score-adj-values") {
int vlen;
int success = 1;
sds *v = sdssplitlen(szFromObj(o), sdslen(szFromObj(o)), " ", 1, &vlen);
if (vlen != CONFIG_OOM_COUNT || updateOOMScoreAdjValues(v, &errstr, 1) == C_ERR)
success = 0;
sdsfreesplitres(v, vlen);
if (!success)
goto badfmt;
} config_set_special_field("notify-keyspace-events") {
int flags = keyspaceEventsStringToFlags(szFromObj(o));
if (flags == -1) goto badfmt;
g_pserver->notify_keyspace_events = flags;
/* Numerical fields.
* config_set_numerical_field(name,var,min,max) */
} config_set_numerical_field(
"watchdog-period",ll,0,INT_MAX) {
if (ll)
enableWatchdog(ll);
else
disableWatchdog();
/* Everything else is an error... */
} config_set_else {
addReplyErrorFormat(c,"Unsupported CONFIG parameter: %s",
(char*)ptrFromObj(c->argv[2]));
return;
}
/* On success we just return a generic OK for all the options. */
addReply(c,shared.ok);
return;
badfmt: /* Bad format errors */
if (errstr) {
addReplyErrorFormat(c,"Invalid argument '%s' for CONFIG SET '%s' - %s",
szFromObj(o),
szFromObj(c->argv[2]),
errstr);
} else {
addReplyErrorFormat(c,"Invalid argument '%s' for CONFIG SET '%s'",
szFromObj(o),
szFromObj(c->argv[2]));
}
}
/*-----------------------------------------------------------------------------
* CONFIG GET implementation
*----------------------------------------------------------------------------*/
#define config_get_string_field(_name,_var) do { \
if (stringmatch(pattern,_name,1)) { \
addReplyBulkCString(c,_name); \
addReplyBulkCString(c,_var ? _var : ""); \
matches++; \
} \
} while(0)
#define config_get_bool_field(_name,_var) do { \
if (stringmatch(pattern,_name,1)) { \
addReplyBulkCString(c,_name); \
addReplyBulkCString(c,_var ? "yes" : "no"); \
matches++; \
} \
} while(0)
#define config_get_numerical_field(_name,_var) do { \