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authorMitja Felicijan <mitja.felicijan@gmail.com>2026-01-21 22:52:54 +0100
committerMitja Felicijan <mitja.felicijan@gmail.com>2026-01-21 22:52:54 +0100
commitdcacc00e3750300617ba6e16eb346713f91a783a (patch)
tree38e2d4fb5ed9d119711d4295c6eda4b014af73fd /examples/redis-unstable/src/debug.c
parent58dac10aeb8f5a041c46bddbeaf4c7966a99b998 (diff)
downloadcrep-dcacc00e3750300617ba6e16eb346713f91a783a.tar.gz
Remove testing data
Diffstat (limited to 'examples/redis-unstable/src/debug.c')
-rw-r--r--examples/redis-unstable/src/debug.c2849
1 files changed, 0 insertions, 2849 deletions
diff --git a/examples/redis-unstable/src/debug.c b/examples/redis-unstable/src/debug.c
deleted file mode 100644
index c239bba..0000000
--- a/examples/redis-unstable/src/debug.c
+++ /dev/null
@@ -1,2849 +0,0 @@
-/*
- * Copyright (c) 2009-Present, Redis Ltd.
- * All rights reserved.
- *
- * Copyright (c) 2024-present, Valkey contributors.
- * All rights reserved.
- *
- * Licensed under your choice of (a) the Redis Source Available License 2.0
- * (RSALv2); or (b) the Server Side Public License v1 (SSPLv1); or (c) the
- * GNU Affero General Public License v3 (AGPLv3).
- *
- * Portions of this file are available under BSD3 terms; see REDISCONTRIBUTIONS for more information.
- */
-
-#include "server.h"
-#include "util.h"
-#include "sha1.h" /* SHA1 is used for DEBUG DIGEST */
-#include "crc64.h"
-#include "bio.h"
-#include "quicklist.h"
-#include "fpconv_dtoa.h"
-#include "fast_float_strtod.h"
-#include "cluster.h"
-#include "threads_mngr.h"
-#include "script.h"
-#include "cluster_asm.h"
-
-#include <arpa/inet.h>
-#include <signal.h>
-#include <dlfcn.h>
-#include <fcntl.h>
-#include <sys/mman.h>
-#include <unistd.h>
-
-#ifdef HAVE_BACKTRACE
-#include <execinfo.h>
-#ifndef __OpenBSD__
-#include <ucontext.h>
-#else
-typedef ucontext_t sigcontext_t;
-#endif
-#endif /* HAVE_BACKTRACE */
-
-#ifdef __CYGWIN__
-#ifndef SA_ONSTACK
-#define SA_ONSTACK 0x08000000
-#endif
-#endif
-
-#if defined(__APPLE__) && defined(__arm64__)
-#include <mach/mach.h>
-#endif
-
-/* Globals */
-static int bug_report_start = 0; /* True if bug report header was already logged. */
-static pthread_mutex_t bug_report_start_mutex;
-static pthread_mutexattr_t bug_report_start_attr;
-
-/* Mutex for a case when two threads crash at the same time. */
-static pthread_mutex_t signal_handler_lock;
-static pthread_mutexattr_t signal_handler_lock_attr;
-static volatile int signal_handler_lock_initialized = 0;
-/* Forward declarations */
-int bugReportStart(void);
-void printCrashReport(void);
-void bugReportEnd(int killViaSignal, int sig);
-void logStackTrace(void *eip, int uplevel, int current_thread);
-void sigalrmSignalHandler(int sig, siginfo_t *info, void *secret);
-
-/* ================================= Debugging ============================== */
-
-/* Compute the sha1 of string at 's' with 'len' bytes long.
- * The SHA1 is then xored against the string pointed by digest.
- * Since xor is commutative, this operation is used in order to
- * "add" digests relative to unordered elements.
- *
- * So digest(a,b,c,d) will be the same of digest(b,a,c,d) */
-void xorDigest(unsigned char *digest, const void *ptr, size_t len) {
- SHA1_CTX ctx;
- unsigned char hash[20];
- int j;
-
- SHA1Init(&ctx);
- SHA1Update(&ctx,ptr,len);
- SHA1Final(hash,&ctx);
-
- for (j = 0; j < 20; j++)
- digest[j] ^= hash[j];
-}
-
-void xorStringObjectDigest(unsigned char *digest, robj *o) {
- o = getDecodedObject(o);
- xorDigest(digest,o->ptr,sdslen(o->ptr));
- decrRefCount(o);
-}
-
-/* This function instead of just computing the SHA1 and xoring it
- * against digest, also perform the digest of "digest" itself and
- * replace the old value with the new one.
- *
- * So the final digest will be:
- *
- * digest = SHA1(digest xor SHA1(data))
- *
- * This function is used every time we want to preserve the order so
- * that digest(a,b,c,d) will be different than digest(b,c,d,a)
- *
- * Also note that mixdigest("foo") followed by mixdigest("bar")
- * will lead to a different digest compared to "fo", "obar".
- */
-void mixDigest(unsigned char *digest, const void *ptr, size_t len) {
- SHA1_CTX ctx;
-
- xorDigest(digest,ptr,len);
- SHA1Init(&ctx);
- SHA1Update(&ctx,digest,20);
- SHA1Final(digest,&ctx);
-}
-
-void mixStringObjectDigest(unsigned char *digest, robj *o) {
- o = getDecodedObject(o);
- mixDigest(digest,o->ptr,sdslen(o->ptr));
- decrRefCount(o);
-}
-
-/* This function computes the digest of a data structure stored in the
- * object 'o'. It is the core of the DEBUG DIGEST command: when taking the
- * digest of a whole dataset, we take the digest of the key and the value
- * pair, and xor all those together.
- *
- * Note that this function does not reset the initial 'digest' passed, it
- * will continue mixing this object digest to anything that was already
- * present. */
-void xorObjectDigest(redisDb *db, robj *keyobj, unsigned char *digest, robj *o) {
- uint32_t aux = htonl(o->type);
- mixDigest(digest,&aux,sizeof(aux));
- long long expiretime = getExpire(db, keyobj->ptr, NULL);
- char buf[128];
-
- /* Save the key and associated value */
- if (o->type == OBJ_STRING) {
- mixStringObjectDigest(digest,o);
- } else if (o->type == OBJ_LIST) {
- listTypeIterator li;
- listTypeEntry entry;
- listTypeInitIterator(&li, o, 0, LIST_TAIL);
- while(listTypeNext(&li, &entry)) {
- robj *eleobj = listTypeGet(&entry);
- mixStringObjectDigest(digest,eleobj);
- decrRefCount(eleobj);
- }
- listTypeResetIterator(&li);
- } else if (o->type == OBJ_SET) {
- setTypeIterator si;
- sds sdsele;
- setTypeInitIterator(&si, o);
- while((sdsele = setTypeNextObject(&si)) != NULL) {
- xorDigest(digest,sdsele,sdslen(sdsele));
- sdsfree(sdsele);
- }
- setTypeResetIterator(&si);
- } else if (o->type == OBJ_ZSET) {
- unsigned char eledigest[20];
-
- if (o->encoding == OBJ_ENCODING_LISTPACK) {
- unsigned char *zl = o->ptr;
- unsigned char *eptr, *sptr;
- unsigned char *vstr;
- unsigned int vlen;
- long long vll;
- double score;
-
- eptr = lpSeek(zl,0);
- serverAssert(eptr != NULL);
- sptr = lpNext(zl,eptr);
- serverAssert(sptr != NULL);
-
- while (eptr != NULL) {
- vstr = lpGetValue(eptr,&vlen,&vll);
- score = zzlGetScore(sptr);
-
- memset(eledigest,0,20);
- if (vstr != NULL) {
- mixDigest(eledigest,vstr,vlen);
- } else {
- ll2string(buf,sizeof(buf),vll);
- mixDigest(eledigest,buf,strlen(buf));
- }
- const int len = fpconv_dtoa(score, buf);
- buf[len] = '\0';
- mixDigest(eledigest,buf,strlen(buf));
- xorDigest(digest,eledigest,20);
- zzlNext(zl,&eptr,&sptr);
- }
- } else if (o->encoding == OBJ_ENCODING_SKIPLIST) {
- zset *zs = o->ptr;
- dictIterator di;
- dictEntry *de;
-
- dictInitIterator(&di, zs->dict);
- while((de = dictNext(&di)) != NULL) {
- zskiplistNode *znode = dictGetKey(de);
- sds sdsele = zslGetNodeElement(znode);
- const int len = fpconv_dtoa(znode->score, buf);
- buf[len] = '\0';
- memset(eledigest,0,20);
- mixDigest(eledigest,sdsele,sdslen(sdsele));
- mixDigest(eledigest,buf,strlen(buf));
- xorDigest(digest,eledigest,20);
- }
- dictResetIterator(&di);
- } else {
- serverPanic("Unknown sorted set encoding");
- }
- } else if (o->type == OBJ_HASH) {
- hashTypeIterator hi;
- hashTypeInitIterator(&hi, o);
- while (hashTypeNext(&hi, 0) != C_ERR) {
- unsigned char eledigest[20];
- sds sdsele;
-
- /* field */
- memset(eledigest,0,20);
- sdsele = hashTypeCurrentObjectNewSds(&hi,OBJ_HASH_KEY);
- mixDigest(eledigest,sdsele,sdslen(sdsele));
- sdsfree(sdsele);
- /* val */
- sdsele = hashTypeCurrentObjectNewSds(&hi,OBJ_HASH_VALUE);
- mixDigest(eledigest,sdsele,sdslen(sdsele));
- sdsfree(sdsele);
- /* hash-field expiration (HFE) */
- if (hi.expire_time != EB_EXPIRE_TIME_INVALID)
- xorDigest(eledigest,"!!hexpire!!",11);
- xorDigest(digest,eledigest,20);
- }
- hashTypeResetIterator(&hi);
- } else if (o->type == OBJ_STREAM) {
- streamIterator si;
- streamIteratorStart(&si,o->ptr,NULL,NULL,0);
- streamID id;
- int64_t numfields;
-
- while(streamIteratorGetID(&si,&id,&numfields)) {
- sds itemid = sdscatfmt(sdsempty(),"%U.%U",id.ms,id.seq);
- mixDigest(digest,itemid,sdslen(itemid));
- sdsfree(itemid);
-
- while(numfields--) {
- unsigned char *field, *value;
- int64_t field_len, value_len;
- streamIteratorGetField(&si,&field,&value,
- &field_len,&value_len);
- mixDigest(digest,field,field_len);
- mixDigest(digest,value,value_len);
- }
- }
- streamIteratorStop(&si);
- } else if (o->type == OBJ_MODULE) {
- RedisModuleDigest md = {{0},{0},keyobj,db->id};
- moduleValue *mv = o->ptr;
- moduleType *mt = mv->type;
- moduleInitDigestContext(md);
- if (mt->digest) {
- mt->digest(&md,mv->value);
- xorDigest(digest,md.x,sizeof(md.x));
- }
- } else {
- serverPanic("Unknown object type");
- }
- /* If the key has an expire, add it to the mix */
- if (expiretime != -1) xorDigest(digest,"!!expire!!",10);
-}
-
-/* Compute the dataset digest. Since keys, sets elements, hashes elements
- * are not ordered, we use a trick: every aggregate digest is the xor
- * of the digests of their elements. This way the order will not change
- * the result. For list instead we use a feedback entering the output digest
- * as input in order to ensure that a different ordered list will result in
- * a different digest. */
-void computeDatasetDigest(unsigned char *final) {
- unsigned char digest[20];
- dictEntry *de;
- int j;
- uint32_t aux;
-
- memset(final,0,20); /* Start with a clean result */
-
- for (j = 0; j < server.dbnum; j++) {
- redisDb *db = server.db+j;
- if (kvstoreSize(db->keys) == 0)
- continue;
-
- /* hash the DB id, so the same dataset moved in a different DB will lead to a different digest */
- aux = htonl(j);
- mixDigest(final,&aux,sizeof(aux));
-
- /* Iterate this DB writing every entry */
- kvstoreIterator kvs_it;
- kvstoreIteratorInit(&kvs_it, db->keys);
- while((de = kvstoreIteratorNext(&kvs_it)) != NULL) {
- robj *keyobj;
-
- memset(digest,0,20); /* This key-val digest */
- kvobj *kv = dictGetKV(de);
- sds key = kvobjGetKey(kv);
- keyobj = createStringObject(key,sdslen(key));
-
- mixDigest(digest,key,sdslen(key));
-
- xorObjectDigest(db, keyobj, digest, kv);
-
- /* We can finally xor the key-val digest to the final digest */
- xorDigest(final,digest,20);
- decrRefCount(keyobj);
- }
- kvstoreIteratorReset(&kvs_it);
- }
-}
-
-#ifdef USE_JEMALLOC
-void mallctl_int(client *c, robj **argv, int argc) {
- int ret;
- /* start with the biggest size (int64), and if that fails, try smaller sizes (int32, bool) */
- int64_t old = 0, val;
- if (argc > 1) {
- long long ll;
- if (getLongLongFromObjectOrReply(c, argv[1], &ll, NULL) != C_OK)
- return;
- val = ll;
- }
- size_t sz = sizeof(old);
- while (sz > 0) {
- size_t zz = sz;
- if ((ret=je_mallctl(argv[0]->ptr, &old, &zz, argc > 1? &val: NULL, argc > 1?sz: 0))) {
- if (ret == EPERM && argc > 1) {
- /* if this option is write only, try just writing to it. */
- if (!(ret=je_mallctl(argv[0]->ptr, NULL, 0, &val, sz))) {
- addReply(c, shared.ok);
- return;
- }
- }
- if (ret==EINVAL) {
- /* size might be wrong, try a smaller one */
- sz /= 2;
-#if BYTE_ORDER == BIG_ENDIAN
- val <<= 8*sz;
-#endif
- continue;
- }
- addReplyErrorFormat(c,"%s", strerror(ret));
- return;
- } else {
-#if BYTE_ORDER == BIG_ENDIAN
- old >>= 64 - 8*sz;
-#endif
- addReplyLongLong(c, old);
- return;
- }
- }
- addReplyErrorFormat(c,"%s", strerror(EINVAL));
-}
-
-void mallctl_string(client *c, robj **argv, int argc) {
- int rret, wret;
- char *old;
- size_t sz = sizeof(old);
- /* for strings, it seems we need to first get the old value, before overriding it. */
- if ((rret=je_mallctl(argv[0]->ptr, &old, &sz, NULL, 0))) {
- /* return error unless this option is write only. */
- if (!(rret == EPERM && argc > 1)) {
- addReplyErrorFormat(c,"%s", strerror(rret));
- return;
- }
- }
- if(argc > 1) {
- char *val = argv[1]->ptr;
- char **valref = &val;
- if ((!strcmp(val,"VOID")))
- valref = NULL, sz = 0;
- wret = je_mallctl(argv[0]->ptr, NULL, 0, valref, sz);
- }
- if (!rret)
- addReplyBulkCString(c, old);
- else if (wret)
- addReplyErrorFormat(c,"%s", strerror(wret));
- else
- addReply(c, shared.ok);
-}
-#endif
-
-void debugCommand(client *c) {
- if (c->argc == 2 && !strcasecmp(c->argv[1]->ptr,"help")) {
- const char *help[] = {
-"AOF-FLUSH-SLEEP <microsec>",
-" Server will sleep before flushing the AOF, this is used for testing.",
-"ASSERT",
-" Crash by assertion failed.",
-"CHANGE-REPL-ID",
-" Change the replication IDs of the instance.",
-" Dangerous: should be used only for testing the replication subsystem.",
-"CONFIG-REWRITE-FORCE-ALL",
-" Like CONFIG REWRITE but writes all configuration options, including",
-" keywords not listed in original configuration file or default values.",
-"CRASH-AND-RECOVER [<milliseconds>]",
-" Hard crash and restart after a <milliseconds> delay (default 0).",
-"DIGEST",
-" Output a hex signature representing the current DB content.",
-"INTERNAL_SECRET",
-" Return the cluster internal secret (hashed with crc16) or error if not in cluster mode.",
-"DIGEST-VALUE <key> [<key> ...]",
-" Output a hex signature of the values of all the specified keys.",
-"ERROR <string>",
-" Return a Redis protocol error with <string> as message. Useful for clients",
-" unit tests to simulate Redis errors.",
-"LEAK <string>",
-" Create a memory leak of the input string.",
-"LOG <message>",
-" Write <message> to the server log.",
-"HTSTATS <dbid> [full]",
-" Return hash table statistics of the specified Redis database.",
-"HTSTATS-KEY <key> [full]",
-" Like HTSTATS but for the hash table stored at <key>'s value.",
-"KEYSIZES-HIST-ASSERT <0|1>",
-" Enable/disable keysizes histogram assertion after each command.",
-"LOADAOF",
-" Flush the AOF buffers on disk and reload the AOF in memory.",
-"REPLICATE <string>",
-" Replicates the provided string to replicas, allowing data divergence.",
-#ifdef USE_JEMALLOC
-"MALLCTL <key> [<val>]",
-" Get or set a malloc tuning integer.",
-"MALLCTL-STR <key> [<val>]",
-" Get or set a malloc tuning string.",
-#endif
-"OBJECT <key>",
-" Show low level info about `key` and associated value.",
-"DROP-CLUSTER-PACKET-FILTER <packet-type>",
-" Drop all packets that match the filtered type. Set to -1 allow all packets.",
-"OOM",
-" Crash the server simulating an out-of-memory error.",
-"PANIC",
-" Crash the server simulating a panic.",
-"POPULATE <count> [<prefix>] [<size>]",
-" Create <count> string keys named key:<num>. If <prefix> is specified then",
-" it is used instead of the 'key' prefix. These are not propagated to",
-" replicas. Cluster slots are not respected so keys not belonging to the",
-" current node can be created in cluster mode.",
-"PROTOCOL <type>",
-" Reply with a test value of the specified type. <type> can be: string,",
-" integer, double, bignum, null, array, set, map, attrib, push, verbatim,",
-" true, false.",
-"RELOAD [option ...]",
-" Save the RDB on disk and reload it back to memory. Valid <option> values:",
-" * MERGE: conflicting keys will be loaded from RDB.",
-" * NOFLUSH: the existing database will not be removed before load, but",
-" conflicting keys will generate an exception and kill the server.",
-" * NOSAVE: the database will be loaded from an existing RDB file.",
-" Examples:",
-" * DEBUG RELOAD: verify that the server is able to persist, flush and reload",
-" the database.",
-" * DEBUG RELOAD NOSAVE: replace the current database with the contents of an",
-" existing RDB file.",
-" * DEBUG RELOAD NOSAVE NOFLUSH MERGE: add the contents of an existing RDB",
-" file to the database.",
-"RESTART [<milliseconds>]",
-" Graceful restart: save config, db, restart after a <milliseconds> delay (default 0).",
-"SDSLEN <key>",
-" Show low level SDS string info representing `key` and value.",
-"SEGFAULT",
-" Crash the server with sigsegv.",
-"SET-ACTIVE-EXPIRE <0|1>",
-" Setting it to 0 disables expiring keys (and hash-fields) in background ",
-" when they are not accessed (otherwise the Redis behavior). Setting it",
-" to 1 reenables back the default.",
-"SET-ALLOW-ACCESS-EXPIRED <0|1>",
-" Setting it to 0 prevents access to expired keys (and hash-fields),",
-" simulating the standard Redis behavior. Setting it to 1 allows",
-" access to expired keys (and hash-fields) without triggering deletion.",
-"QUICKLIST-PACKED-THRESHOLD <size>",
-" Sets the threshold for elements to be inserted as plain vs packed nodes",
-" Default value is 1GB, allows values up to 4GB. Setting to 0 restores to default.",
-"SET-SKIP-CHECKSUM-VALIDATION <0|1>",
-" Enables or disables checksum checks for RDB files and RESTORE's payload.",
-"SLEEP <seconds>",
-" Stop the server for <seconds>. Decimals allowed.",
-"STRINGMATCH-TEST",
-" Run a fuzz tester against the stringmatchlen() function.",
-"STRUCTSIZE",
-" Return the size of different Redis core C structures.",
-"LISTPACK <key>",
-" Show low level info about the listpack encoding of <key>.",
-"QUICKLIST <key> [<0|1>]",
-" Show low level info about the quicklist encoding of <key>.",
-" The optional argument (0 by default) sets the level of detail",
-"CLIENT-EVICTION",
-" Show low level client eviction pools info (maxmemory-clients).",
-"PAUSE-CRON <0|1>",
-" Stop periodic cron job processing.",
-"REPLYBUFFER PEAK-RESET-TIME <NEVER||RESET|time>",
-" Sets the time (in milliseconds) to wait between client reply buffer peak resets.",
-" In case NEVER is provided the last observed peak will never be reset",
-" In case RESET is provided the peak reset time will be restored to the default value",
-"REPLYBUFFER RESIZING <0|1>",
-" Enable or disable the reply buffer resize cron job",
-"REPLY-COPY-AVOIDANCE <0|1>",
-" Enable/disable reply copy avoidance optimization.",
-"REPL-PAUSE <clear|after-fork|before-rdb-channel|on-streaming-repl-buf>",
-" Pause the server's main process during various replication steps.",
-"DICT-RESIZING <0|1>",
-" Enable or disable the main dict and expire dict resizing.",
-"SCRIPT <LIST|<sha>>",
-" Output SHA and content of all scripts or of a specific script with its SHA.",
-"MARK-INTERNAL-CLIENT [UNMARK]",
-" Promote the current connection to an internal connection.",
-"ASM-FAILPOINT <channel> <state>",
-" Set a fail point for the specified channel and state for cluster atomic slot migration.",
-"ASM-TRIM-METHOD <default|none|active|bg> <active-trim-delay> ",
-" Disable trimming or force active/background trimming for cluster atomic slot migration.",
-" Active trim delay is used only when method is 'active'. If it is negative,",
-" active trim is disabled.",
-NULL
- };
- addExtendedReplyHelp(c, help, clusterDebugCommandExtendedHelp());
- } else if (!strcasecmp(c->argv[1]->ptr,"segfault")) {
- /* Compiler gives warnings about writing to a random address
- * e.g "*((char*)-1) = 'x';". As a workaround, we map a read-only area
- * and try to write there to trigger segmentation fault. */
- char* p = mmap(NULL, 4096, PROT_READ, MAP_PRIVATE | MAP_ANON, -1, 0);
- *p = 'x';
- } else if (!strcasecmp(c->argv[1]->ptr,"panic")) {
- serverPanic("DEBUG PANIC called at Unix time %lld", (long long)time(NULL));
- } else if (!strcasecmp(c->argv[1]->ptr,"restart") ||
- !strcasecmp(c->argv[1]->ptr,"crash-and-recover"))
- {
- long long delay = 0;
- if (c->argc >= 3) {
- if (getLongLongFromObjectOrReply(c, c->argv[2], &delay, NULL)
- != C_OK) return;
- if (delay < 0) delay = 0;
- }
- int flags = !strcasecmp(c->argv[1]->ptr,"restart") ?
- (RESTART_SERVER_GRACEFULLY|RESTART_SERVER_CONFIG_REWRITE) :
- RESTART_SERVER_NONE;
- restartServer(flags,delay);
- addReplyError(c,"failed to restart the server. Check server logs.");
- } else if (!strcasecmp(c->argv[1]->ptr,"oom")) {
- void *ptr = zmalloc(SIZE_MAX/2); /* Should trigger an out of memory. */
- zfree(ptr);
- addReply(c,shared.ok);
- } else if (!strcasecmp(c->argv[1]->ptr,"assert")) {
- serverAssertWithInfo(c,c->argv[0],1 == 2);
- } else if (!strcasecmp(c->argv[1]->ptr,"KEYSIZES-HIST-ASSERT") && c->argc == 3) {
- long long flag;
- if (getLongLongFromObjectOrReply(c, c->argv[2], &flag, NULL) != C_OK)
- return;
- server.dbg_assert_keysizes = (flag != 0);
- addReply(c, shared.ok);
- } else if (!strcasecmp(c->argv[1]->ptr,"ALLOCSIZE-SLOTS-ASSERT") && c->argc == 3) {
- long long flag;
- if (getLongLongFromObjectOrReply(c, c->argv[2], &flag, NULL) != C_OK)
- return;
- server.dbg_assert_alloc_per_slot = (flag != 0);
- addReply(c, shared.ok);
- } else if (!strcasecmp(c->argv[1]->ptr,"log") && c->argc == 3) {
- serverLog(LL_WARNING, "DEBUG LOG: %s", (char*)c->argv[2]->ptr);
- addReply(c,shared.ok);
- } else if (!strcasecmp(c->argv[1]->ptr,"leak") && c->argc == 3) {
- sdsdup(c->argv[2]->ptr);
- addReply(c,shared.ok);
- } else if (!strcasecmp(c->argv[1]->ptr,"reload")) {
- int flush = 1, save = 1;
- int flags = RDBFLAGS_NONE;
-
- /* Parse the additional options that modify the RELOAD
- * behavior. */
- for (int j = 2; j < c->argc; j++) {
- char *opt = c->argv[j]->ptr;
- if (!strcasecmp(opt,"MERGE")) {
- flags |= RDBFLAGS_ALLOW_DUP;
- } else if (!strcasecmp(opt,"NOFLUSH")) {
- flush = 0;
- } else if (!strcasecmp(opt,"NOSAVE")) {
- save = 0;
- } else {
- addReplyError(c,"DEBUG RELOAD only supports the "
- "MERGE, NOFLUSH and NOSAVE options.");
- return;
- }
- }
-
- /* The default behavior is to save the RDB file before loading
- * it back. */
- if (save) {
- rdbSaveInfo rsi, *rsiptr;
- rsiptr = rdbPopulateSaveInfo(&rsi);
- if (rdbSave(SLAVE_REQ_NONE,server.rdb_filename,rsiptr,RDBFLAGS_NONE) != C_OK) {
- addReplyErrorObject(c,shared.err);
- return;
- }
- }
-
- /* The default behavior is to remove the current dataset from
- * memory before loading the RDB file, however when MERGE is
- * used together with NOFLUSH, we are able to merge two datasets. */
- if (flush) emptyData(-1,EMPTYDB_NO_FLAGS,NULL);
-
- protectClient(c);
- int ret = rdbLoad(server.rdb_filename,NULL,flags);
- unprotectClient(c);
- if (ret != RDB_OK) {
- addReplyError(c,"Error trying to load the RDB dump, check server logs.");
- return;
- }
- applyAppendOnlyConfig(); /* Check if AOF config was changed while loading */
- serverLog(LL_NOTICE,"DB reloaded by DEBUG RELOAD");
- addReply(c,shared.ok);
- } else if (!strcasecmp(c->argv[1]->ptr,"loadaof")) {
- if (server.aof_state != AOF_OFF) flushAppendOnlyFile(1);
- emptyData(-1,EMPTYDB_NO_FLAGS,NULL);
- protectClient(c);
- if (server.aof_manifest) aofManifestFree(server.aof_manifest);
- aofLoadManifestFromDisk();
- aofDelHistoryFiles();
- int ret = loadAppendOnlyFiles(server.aof_manifest);
- unprotectClient(c);
- if (ret != AOF_OK && ret != AOF_EMPTY) {
- addReplyError(c, "Error trying to load the AOF files, check server logs.");
- return;
- }
- applyAppendOnlyConfig(); /* Check if AOF config was changed while loading */
- server.dirty = 0; /* Prevent AOF / replication */
- serverLog(LL_NOTICE,"Append Only File loaded by DEBUG LOADAOF");
- addReply(c,shared.ok);
- } else if (!strcasecmp(c->argv[1]->ptr,"drop-cluster-packet-filter") && c->argc == 3) {
- long packet_type;
- if (getLongFromObjectOrReply(c, c->argv[2], &packet_type, NULL) != C_OK)
- return;
- server.cluster_drop_packet_filter = packet_type;
- addReply(c,shared.ok);
- } else if (!strcasecmp(c->argv[1]->ptr,"object") && c->argc == 3) {
- kvobj *kv;
- char *strenc;
-
- if ((kv = dbFind(c->db, c->argv[2]->ptr)) == NULL) {
- addReplyErrorObject(c,shared.nokeyerr);
- return;
- }
-
- strenc = strEncoding(kv->encoding);
-
- char extra[138] = {0};
- if (kv->encoding == OBJ_ENCODING_QUICKLIST) {
- char *nextra = extra;
- int remaining = sizeof(extra);
- quicklist *ql = kv->ptr;
- /* Add number of quicklist nodes */
- int used = snprintf(nextra, remaining, " ql_nodes:%lu", ql->len);
- nextra += used;
- remaining -= used;
- /* Add average quicklist fill factor */
- double avg = (double)ql->count/ql->len;
- used = snprintf(nextra, remaining, " ql_avg_node:%.2f", avg);
- nextra += used;
- remaining -= used;
- /* Add quicklist fill level / max listpack size */
- used = snprintf(nextra, remaining, " ql_listpack_max:%d", ql->fill);
- nextra += used;
- remaining -= used;
- /* Add isCompressed? */
- int compressed = ql->compress != 0;
- used = snprintf(nextra, remaining, " ql_compressed:%d", compressed);
- nextra += used;
- remaining -= used;
- /* Add total uncompressed size */
- unsigned long sz = 0;
- for (quicklistNode *node = ql->head; node; node = node->next) {
- sz += node->sz;
- }
- used = snprintf(nextra, remaining, " ql_uncompressed_size:%lu", sz);
- nextra += used;
- remaining -= used;
- }
-
- addReplyStatusFormat(c,
- "Value at:%p refcount:%d "
- "encoding:%s serializedlength:%zu "
- "lru:%d lru_seconds_idle:%llu%s",
- (void*)kv, kv->refcount,
- strenc, rdbSavedObjectLen(kv, c->argv[2], c->db->id),
- kv->lru, estimateObjectIdleTime(kv)/1000, extra);
- } else if (!strcasecmp(c->argv[1]->ptr,"sdslen") && c->argc == 3) {
- robj *val;
- sds key;
- kvobj *kv;
-
- if ((kv = dbFind(c->db, c->argv[2]->ptr)) == NULL) {
- addReplyErrorObject(c,shared.nokeyerr);
- return;
- }
-
- val = kv;
- key = kvobjGetKey(kv);
- if (kv->type != OBJ_STRING || !sdsEncodedObject(val)) {
- addReplyError(c,"Not an sds encoded string.");
- } else {
- /* The key's allocation size reflects the entire robj allocation.
- * For embedded values, report an allocation size of 0. */
- size_t obj_alloc = zmalloc_usable_size(val);
- size_t val_alloc = val->encoding == OBJ_ENCODING_RAW ? sdsAllocSize(val->ptr) : 0;
- addReplyStatusFormat(c,
- "key_sds_len:%lld, key_sds_avail:%lld, key_zmalloc: %lld, "
- "val_sds_len:%lld, val_sds_avail:%lld, val_zmalloc: %lld",
- (long long) sdslen(key),
- (long long) sdsavail(key),
- (long long) obj_alloc,
- (long long) sdslen(val->ptr),
- (long long) sdsavail(val->ptr),
- (long long) val_alloc);
- }
- } else if (!strcasecmp(c->argv[1]->ptr,"listpack") && c->argc == 3) {
- kvobj *o;
-
- if ((o = kvobjCommandLookupOrReply(c, c->argv[2], shared.nokeyerr))
- == NULL) return;
-
- if (o->encoding != OBJ_ENCODING_LISTPACK && o->encoding != OBJ_ENCODING_LISTPACK_EX) {
- addReplyError(c,"Not a listpack encoded object.");
- } else {
- if (o->encoding == OBJ_ENCODING_LISTPACK)
- lpRepr(o->ptr);
- else if (o->encoding == OBJ_ENCODING_LISTPACK_EX)
- lpRepr(((listpackEx*)o->ptr)->lp);
-
- addReplyStatus(c,"Listpack structure printed on stdout");
- }
- } else if (!strcasecmp(c->argv[1]->ptr,"quicklist") && (c->argc == 3 || c->argc == 4)) {
- kvobj *o;
-
- if ((o = kvobjCommandLookupOrReply(c, c->argv[2], shared.nokeyerr))
- == NULL) return;
-
- int full = 0;
- if (c->argc == 4)
- full = atoi(c->argv[3]->ptr);
- if (o->encoding != OBJ_ENCODING_QUICKLIST) {
- addReplyError(c,"Not a quicklist encoded object.");
- } else {
- quicklistRepr(o->ptr, full);
- addReplyStatus(c,"Quicklist structure printed on stdout");
- }
- } else if (!strcasecmp(c->argv[1]->ptr,"populate") &&
- c->argc >= 3 && c->argc <= 5) {
- long keys, j;
- robj *key, *val;
- char buf[128];
-
- if (getPositiveLongFromObjectOrReply(c, c->argv[2], &keys, NULL) != C_OK)
- return;
-
- if (server.loading || server.async_loading) {
- addReplyErrorObject(c, shared.loadingerr);
- return;
- }
-
- if (dbExpand(c->db, keys, 1) == C_ERR) {
- addReplyError(c, "OOM in dictTryExpand");
- return;
- }
- long valsize = 0;
- if ( c->argc == 5 && getPositiveLongFromObjectOrReply(c, c->argv[4], &valsize, NULL) != C_OK )
- return;
-
- for (j = 0; j < keys; j++) {
- snprintf(buf,sizeof(buf),"%s:%lu",
- (c->argc == 3) ? "key" : (char*)c->argv[3]->ptr, j);
- key = createStringObject(buf,strlen(buf));
- if (lookupKeyWrite(c->db,key) != NULL) {
- decrRefCount(key);
- continue;
- }
- snprintf(buf,sizeof(buf),"value:%lu",j);
- if (valsize==0)
- val = createStringObject(buf,strlen(buf));
- else {
- int buflen = strlen(buf);
- val = createStringObject(NULL,valsize);
- memcpy(val->ptr, buf, valsize<=buflen? valsize: buflen);
- }
- dbAdd(c->db, key, &val);
- keyModified(c,c->db,key,NULL,1);
- decrRefCount(key);
- }
- addReply(c,shared.ok);
- } else if (!strcasecmp(c->argv[1]->ptr,"digest") && c->argc == 2) {
- /* DEBUG DIGEST (form without keys specified) */
- unsigned char digest[20];
- sds d = sdsempty();
-
- computeDatasetDigest(digest);
- for (int i = 0; i < 20; i++) d = sdscatprintf(d, "%02x",digest[i]);
- addReplyStatus(c,d);
- sdsfree(d);
- } else if (!strcasecmp(c->argv[1]->ptr,"internal_secret") && c->argc == 2) {
- size_t len;
- const char *internal_secret = clusterGetSecret(&len);
- if (!internal_secret) {
- addReplyError(c, "Internal secret is missing");
- } else {
- uint16_t hash = crc16(internal_secret, len);
- addReplyLongLong(c, hash);
- }
- } else if (!strcasecmp(c->argv[1]->ptr,"digest-value") && c->argc >= 2) {
- /* DEBUG DIGEST-VALUE key key key ... key. */
- addReplyArrayLen(c,c->argc-2);
- for (int j = 2; j < c->argc; j++) {
- unsigned char digest[20];
- memset(digest,0,20); /* Start with a clean result */
-
- /* We don't use lookupKey because a debug command should
- * work on logically expired keys */
- kvobj *o = dbFind(c->db, c->argv[j]->ptr);
- if (o) xorObjectDigest(c->db,c->argv[j],digest,o);
-
- sds d = sdsempty();
- for (int i = 0; i < 20; i++) d = sdscatprintf(d, "%02x",digest[i]);
- addReplyStatus(c,d);
- sdsfree(d);
- }
- } else if (!strcasecmp(c->argv[1]->ptr,"protocol") && c->argc == 3) {
- /* DEBUG PROTOCOL [string|integer|double|bignum|null|array|set|map|
- * attrib|push|verbatim|true|false] */
- char *name = c->argv[2]->ptr;
- if (!strcasecmp(name,"string")) {
- addReplyBulkCString(c,"Hello World");
- } else if (!strcasecmp(name,"integer")) {
- addReplyLongLong(c,12345);
- } else if (!strcasecmp(name,"double")) {
- addReplyDouble(c,3.141);
- } else if (!strcasecmp(name,"bignum")) {
- addReplyBigNum(c,"1234567999999999999999999999999999999",37);
- } else if (!strcasecmp(name,"null")) {
- addReplyNull(c);
- } else if (!strcasecmp(name,"array")) {
- addReplyArrayLen(c,3);
- for (int j = 0; j < 3; j++) addReplyLongLong(c,j);
- } else if (!strcasecmp(name,"set")) {
- addReplySetLen(c,3);
- for (int j = 0; j < 3; j++) addReplyLongLong(c,j);
- } else if (!strcasecmp(name,"map")) {
- addReplyMapLen(c,3);
- for (int j = 0; j < 3; j++) {
- addReplyLongLong(c,j);
- addReplyBool(c, j == 1);
- }
- } else if (!strcasecmp(name,"attrib")) {
- if (c->resp >= 3) {
- addReplyAttributeLen(c,1);
- addReplyBulkCString(c,"key-popularity");
- addReplyArrayLen(c,2);
- addReplyBulkCString(c,"key:123");
- addReplyLongLong(c,90);
- }
- /* Attributes are not real replies, so a well formed reply should
- * also have a normal reply type after the attribute. */
- addReplyBulkCString(c,"Some real reply following the attribute");
- } else if (!strcasecmp(name,"push")) {
- if (c->resp < 3) {
- addReplyError(c,"RESP2 is not supported by this command");
- return;
- }
- uint64_t old_flags = c->flags;
- c->flags |= CLIENT_PUSHING;
- addReplyPushLen(c,2);
- addReplyBulkCString(c,"server-cpu-usage");
- addReplyLongLong(c,42);
- if (!(old_flags & CLIENT_PUSHING)) c->flags &= ~CLIENT_PUSHING;
- /* Push replies are not synchronous replies, so we emit also a
- * normal reply in order for blocking clients just discarding the
- * push reply, to actually consume the reply and continue. */
- addReplyBulkCString(c,"Some real reply following the push reply");
- } else if (!strcasecmp(name,"true")) {
- addReplyBool(c,1);
- } else if (!strcasecmp(name,"false")) {
- addReplyBool(c,0);
- } else if (!strcasecmp(name,"verbatim")) {
- addReplyVerbatim(c,"This is a verbatim\nstring",25,"txt");
- } else {
- addReplyError(c,"Wrong protocol type name. Please use one of the following: string|integer|double|bignum|null|array|set|map|attrib|push|verbatim|true|false");
- }
- } else if (!strcasecmp(c->argv[1]->ptr,"sleep") && c->argc == 3) {
- double dtime = fast_float_strtod(c->argv[2]->ptr,NULL);
- long long utime = dtime*1000000;
- struct timespec tv;
-
- tv.tv_sec = utime / 1000000;
- tv.tv_nsec = (utime % 1000000) * 1000;
- nanosleep(&tv, NULL);
- addReply(c,shared.ok);
- } else if (!strcasecmp(c->argv[1]->ptr,"set-active-expire") &&
- c->argc == 3)
- {
- server.active_expire_enabled = atoi(c->argv[2]->ptr);
- addReply(c,shared.ok);
- } else if (!strcasecmp(c->argv[1]->ptr,"set-allow-access-expired") &&
- c->argc == 3)
- {
- server.allow_access_expired = atoi(c->argv[2]->ptr);
- addReply(c,shared.ok);
- } else if (!strcasecmp(c->argv[1]->ptr,"quicklist-packed-threshold") &&
- c->argc == 3)
- {
- int memerr;
- unsigned long long sz = memtoull((const char *)c->argv[2]->ptr, &memerr);
- if (memerr || !quicklistSetPackedThreshold(sz)) {
- addReplyError(c, "argument must be a memory value bigger than 1 and smaller than 4gb");
- } else {
- addReply(c,shared.ok);
- }
- } else if (!strcasecmp(c->argv[1]->ptr,"set-skip-checksum-validation") &&
- c->argc == 3)
- {
- server.skip_checksum_validation = atoi(c->argv[2]->ptr);
- addReply(c,shared.ok);
- } else if (!strcasecmp(c->argv[1]->ptr,"aof-flush-sleep") &&
- c->argc == 3)
- {
- server.aof_flush_sleep = atoi(c->argv[2]->ptr);
- addReply(c,shared.ok);
- } else if (!strcasecmp(c->argv[1]->ptr,"replicate") && c->argc >= 3) {
- replicationFeedSlaves(server.slaves, -1,
- c->argv + 2, c->argc - 2);
- addReply(c,shared.ok);
- } else if (!strcasecmp(c->argv[1]->ptr,"error") && c->argc == 3) {
- sds errstr = sdsnewlen("-",1);
-
- errstr = sdscatsds(errstr,c->argv[2]->ptr);
- errstr = sdsmapchars(errstr,"\n\r"," ",2); /* no newlines in errors. */
- errstr = sdscatlen(errstr,"\r\n",2);
- addReplySds(c,errstr);
- } else if (!strcasecmp(c->argv[1]->ptr,"structsize") && c->argc == 2) {
- sds sizes = sdsempty();
- sizes = sdscatprintf(sizes,"bits:%d ",(sizeof(void*) == 8)?64:32);
- sizes = sdscatprintf(sizes,"robj:%d ",(int)sizeof(robj));
- sizes = sdscatprintf(sizes,"dictentry:%d ",(int)dictEntryMemUsage(0));
- sizes = sdscatprintf(sizes,"sdshdr5:%d ",(int)sizeof(struct sdshdr5));
- sizes = sdscatprintf(sizes,"sdshdr8:%d ",(int)sizeof(struct sdshdr8));
- sizes = sdscatprintf(sizes,"sdshdr16:%d ",(int)sizeof(struct sdshdr16));
- sizes = sdscatprintf(sizes,"sdshdr32:%d ",(int)sizeof(struct sdshdr32));
- sizes = sdscatprintf(sizes,"sdshdr64:%d ",(int)sizeof(struct sdshdr64));
- addReplyBulkSds(c,sizes);
- } else if (!strcasecmp(c->argv[1]->ptr,"htstats") && c->argc >= 3) {
- long dbid;
- sds stats = sdsempty();
- char buf[4096];
- int full = 0;
-
- if (getLongFromObjectOrReply(c, c->argv[2], &dbid, NULL) != C_OK) {
- sdsfree(stats);
- return;
- }
- if (dbid < 0 || dbid >= server.dbnum) {
- sdsfree(stats);
- addReplyError(c,"Out of range database");
- return;
- }
- if (c->argc >= 4 && !strcasecmp(c->argv[3]->ptr,"full"))
- full = 1;
-
- stats = sdscatprintf(stats,"[Dictionary HT]\n");
- kvstoreGetStats(server.db[dbid].keys, buf, sizeof(buf), full);
- stats = sdscat(stats,buf);
-
- stats = sdscatprintf(stats,"[Expires HT]\n");
- kvstoreGetStats(server.db[dbid].expires, buf, sizeof(buf), full);
- stats = sdscat(stats,buf);
-
- addReplyVerbatim(c,stats,sdslen(stats),"txt");
- sdsfree(stats);
- } else if (!strcasecmp(c->argv[1]->ptr,"htstats-key") && c->argc >= 3) {
- kvobj *o;
- dict *ht = NULL;
- int full = 0;
-
- if (c->argc >= 4 && !strcasecmp(c->argv[3]->ptr,"full"))
- full = 1;
-
- if ((o = kvobjCommandLookupOrReply(c,c->argv[2],shared.nokeyerr))
- == NULL) return;
-
- /* Get the hash table reference from the object, if possible. */
- switch (o->encoding) {
- case OBJ_ENCODING_SKIPLIST:
- {
- zset *zs = o->ptr;
- ht = zs->dict;
- }
- break;
- case OBJ_ENCODING_HT:
- ht = o->ptr;
- break;
- }
-
- if (ht == NULL) {
- addReplyError(c,"The value stored at the specified key is not "
- "represented using an hash table");
- } else {
- char buf[4096];
- dictGetStats(buf,sizeof(buf),ht,full);
- addReplyVerbatim(c,buf,strlen(buf),"txt");
- }
- } else if (!strcasecmp(c->argv[1]->ptr,"change-repl-id") && c->argc == 2) {
- serverLog(LL_NOTICE,"Changing replication IDs after receiving DEBUG change-repl-id");
- changeReplicationId();
- clearReplicationId2();
- addReply(c,shared.ok);
- } else if (!strcasecmp(c->argv[1]->ptr,"stringmatch-test") && c->argc == 2)
- {
- stringmatchlen_fuzz_test();
- addReplyStatus(c,"Apparently Redis did not crash: test passed");
- } else if (!strcasecmp(c->argv[1]->ptr,"set-disable-deny-scripts") && c->argc == 3)
- {
- server.script_disable_deny_script = atoi(c->argv[2]->ptr);
- addReply(c,shared.ok);
- } else if (!strcasecmp(c->argv[1]->ptr,"config-rewrite-force-all") && c->argc == 2)
- {
- if (rewriteConfig(server.configfile, 1) == -1)
- addReplyErrorFormat(c, "CONFIG-REWRITE-FORCE-ALL failed: %s", strerror(errno));
- else
- addReply(c, shared.ok);
- } else if(!strcasecmp(c->argv[1]->ptr,"client-eviction") && c->argc == 2) {
- if (!server.client_mem_usage_buckets) {
- addReplyError(c,"maxmemory-clients is disabled.");
- return;
- }
- sds bucket_info = sdsempty();
- for (int j = 0; j < CLIENT_MEM_USAGE_BUCKETS; j++) {
- if (j == 0)
- bucket_info = sdscatprintf(bucket_info, "bucket 0");
- else
- bucket_info = sdscatprintf(bucket_info, "bucket %10zu", (size_t)1<<(j-1+CLIENT_MEM_USAGE_BUCKET_MIN_LOG));
- if (j == CLIENT_MEM_USAGE_BUCKETS-1)
- bucket_info = sdscatprintf(bucket_info, "+ : ");
- else
- bucket_info = sdscatprintf(bucket_info, " - %10zu: ", ((size_t)1<<(j+CLIENT_MEM_USAGE_BUCKET_MIN_LOG))-1);
- bucket_info = sdscatprintf(bucket_info, "tot-mem: %10zu, clients: %lu\n",
- server.client_mem_usage_buckets[j].mem_usage_sum,
- server.client_mem_usage_buckets[j].clients->len);
- }
- addReplyVerbatim(c,bucket_info,sdslen(bucket_info),"txt");
- sdsfree(bucket_info);
-#ifdef USE_JEMALLOC
- } else if(!strcasecmp(c->argv[1]->ptr,"mallctl") && c->argc >= 3) {
- mallctl_int(c, c->argv+2, c->argc-2);
- return;
- } else if(!strcasecmp(c->argv[1]->ptr,"mallctl-str") && c->argc >= 3) {
- mallctl_string(c, c->argv+2, c->argc-2);
- return;
-#endif
- } else if (!strcasecmp(c->argv[1]->ptr,"pause-cron") && c->argc == 3)
- {
- server.pause_cron = atoi(c->argv[2]->ptr);
- addReply(c,shared.ok);
- } else if (!strcasecmp(c->argv[1]->ptr,"replybuffer") && c->argc == 4 ) {
- if(!strcasecmp(c->argv[2]->ptr, "peak-reset-time")) {
- if (!strcasecmp(c->argv[3]->ptr, "never")) {
- server.reply_buffer_peak_reset_time = -1;
- } else if(!strcasecmp(c->argv[3]->ptr, "reset")) {
- server.reply_buffer_peak_reset_time = REPLY_BUFFER_DEFAULT_PEAK_RESET_TIME;
- } else {
- if (getLongFromObjectOrReply(c, c->argv[3], &server.reply_buffer_peak_reset_time, NULL) != C_OK)
- return;
- }
- } else if(!strcasecmp(c->argv[2]->ptr,"resizing")) {
- server.reply_buffer_resizing_enabled = atoi(c->argv[3]->ptr);
- } else {
- addReplySubcommandSyntaxError(c);
- return;
- }
- addReply(c, shared.ok);
- } else if (!strcasecmp(c->argv[1]->ptr,"reply-copy-avoidance") && c->argc == 3) {
- server.reply_copy_avoidance_enabled = atoi(c->argv[2]->ptr);
- addReply(c,shared.ok);
- } else if (!strcasecmp(c->argv[1]->ptr, "repl-pause") && c->argc == 3) {
- if (!strcasecmp(c->argv[2]->ptr, "clear")) {
- server.repl_debug_pause = REPL_DEBUG_PAUSE_NONE;
- } else if (!strcasecmp(c->argv[2]->ptr,"after-fork")) {
- server.repl_debug_pause |= REPL_DEBUG_AFTER_FORK;
- } else if (!strcasecmp(c->argv[2]->ptr,"before-rdb-channel")) {
- server.repl_debug_pause |= REPL_DEBUG_BEFORE_RDB_CHANNEL;
- } else if (!strcasecmp(c->argv[2]->ptr, "on-streaming-repl-buf")) {
- server.repl_debug_pause |= REPL_DEBUG_ON_STREAMING_REPL_BUF;
- } else {
- addReplySubcommandSyntaxError(c);
- return;
- }
- addReply(c, shared.ok);
- } else if (!strcasecmp(c->argv[1]->ptr, "dict-resizing") && c->argc == 3) {
- server.dict_resizing = atoi(c->argv[2]->ptr);
- addReply(c, shared.ok);
- } else if (!strcasecmp(c->argv[1]->ptr,"script") && c->argc == 3) {
- if (!strcasecmp(c->argv[2]->ptr,"list")) {
- dictIterator di;
- dictEntry *de;
- dictInitIterator(&di, evalScriptsDict());
- while ((de = dictNext(&di)) != NULL) {
- luaScript *script = dictGetVal(de);
- sds *sha = dictGetKey(de);
- serverLog(LL_WARNING, "SCRIPT SHA: %s\n%s", (char*)sha, (char*)script->body->ptr);
- }
- dictResetIterator(&di);
- } else if (sdslen(c->argv[2]->ptr) == 40) {
- dictEntry *de;
- if ((de = dictFind(evalScriptsDict(), c->argv[2]->ptr)) == NULL) {
- addReplyErrorObject(c, shared.noscripterr);
- return;
- }
- luaScript *script = dictGetVal(de);
- serverLog(LL_WARNING, "SCRIPT SHA: %s\n%s", (char*)c->argv[2]->ptr, (char*)script->body->ptr);
- } else {
- addReplySubcommandSyntaxError(c);
- return;
- }
- addReply(c,shared.ok);
- } else if(!strcasecmp(c->argv[1]->ptr,"mark-internal-client") && c->argc < 4) {
- if (c->argc == 2) {
- c->flags |= CLIENT_INTERNAL;
- addReply(c, shared.ok);
- } else if (c->argc == 3 && !strcasecmp(c->argv[2]->ptr, "unmark")) {
- c->flags &= ~CLIENT_INTERNAL;
- addReply(c, shared.ok);
- } else {
- addReplySubcommandSyntaxError(c);
- return;
- }
- } else if(!strcasecmp(c->argv[1]->ptr,"asm-failpoint") && c->argc == 4) {
- if (asmDebugSetFailPoint(c->argv[2]->ptr, c->argv[3]->ptr) != C_OK) {
- addReplyError(c, "Failed to set ASM fail point");
- } else {
- addReply(c, shared.ok);
- }
- } else if(!strcasecmp(c->argv[1]->ptr,"asm-trim-method") && c->argc >= 3) {
- int delay = c->argc == 4 ? atoi(c->argv[3]->ptr) : 0;
- if (asmDebugSetTrimMethod(c->argv[2]->ptr, delay) != C_OK) {
- addReplyError(c, "Failed to set ASM trim method");
- } else {
- addReply(c, shared.ok);
- }
- } else if(!handleDebugClusterCommand(c)) {
- addReplySubcommandSyntaxError(c);
- return;
- }
-}
-
-/* =========================== Crash handling ============================== */
-
-/* When hide-user-data-from-log is enabled, to avoid leaking user info, we only
- * print tokens of the current command into the log. First, we collect command
- * tokens into this struct (Commands tokens are defined in json schema). Later,
- * checking each argument against the token list. */
-#define CMD_TOKEN_MAX_COUNT 128 /* Max token count in a command's json schema */
-struct cmdToken {
- const char *tokens[CMD_TOKEN_MAX_COUNT];
- int n_token;
-};
-
-/* Collect tokens from command arguments recursively. */
-static void cmdTokenCollect(struct cmdToken *tk, redisCommandArg *args, int argc) {
- if (args == NULL)
- return;
-
- for (int i = 0; i < argc && tk->n_token < CMD_TOKEN_MAX_COUNT; i++) {
- if (args[i].token)
- tk->tokens[tk->n_token++] = args[i].token;
- cmdTokenCollect(tk, args[i].subargs, args[i].num_args);
- }
-}
-
-/* Get tokens of the command. */
-static void cmdTokenGetFromCommand(struct cmdToken *tk, struct redisCommand *cmd) {
- tk->n_token = 0;
- cmdTokenCollect(tk, cmd->args, cmd->num_args);
-}
-
-/* Check if object is one of command's tokens. */
-static int cmdTokenCheck(struct cmdToken *tk, robj *o) {
- if (o->type != OBJ_STRING || !sdsEncodedObject(o))
- return 0;
-
- for (int i = 0; i < tk->n_token; i++) {
- if (strcasecmp(tk->tokens[i], o->ptr) == 0)
- return 1;
- }
- return 0;
-}
-
-__attribute__ ((noinline))
-void _serverAssert(const char *estr, const char *file, int line) {
- int new_report = bugReportStart();
- serverLog(LL_WARNING,"=== %sASSERTION FAILED ===", new_report ? "" : "RECURSIVE ");
- serverLog(LL_WARNING,"==> %s:%d '%s' is not true",file,line,estr);
-
- if (server.crashlog_enabled) {
-#ifdef HAVE_BACKTRACE
- logStackTrace(NULL, 1, 0);
-#endif
- /* If this was a recursive assertion, it what most likely generated
- * from printCrashReport. */
- if (new_report) printCrashReport();
- }
-
- // remove the signal handler so on abort() we will output the crash report.
- removeSigSegvHandlers();
- bugReportEnd(0, 0);
-}
-
-void _serverAssertPrintClientInfo(const client *c) {
- int j;
- char conninfo[CONN_INFO_LEN];
- struct redisCommand *cmd = NULL;
- struct cmdToken tokens = {{0}};
-
- bugReportStart();
- serverLog(LL_WARNING,"=== ASSERTION FAILED CLIENT CONTEXT ===");
- serverLog(LL_WARNING,"client->flags = %llu", (unsigned long long) c->flags);
- serverLog(LL_WARNING,"client->conn = %s", connGetInfo(c->conn, conninfo, sizeof(conninfo)));
- serverLog(LL_WARNING,"client->argc = %d", c->argc);
- if (server.hide_user_data_from_log) {
- cmd = lookupCommand(c->argv, c->argc);
- if (cmd)
- cmdTokenGetFromCommand(&tokens, cmd);
- }
-
- for (j=0; j < c->argc; j++) {
- char buf[128];
- char *arg;
-
- /* Allow command name, subcommand name and command tokens in the log. */
- if (server.hide_user_data_from_log && (j != 0 && !(j == 1 && cmd && cmd->parent))) {
- if (!cmdTokenCheck(&tokens, c->argv[j])) {
- serverLog(LL_WARNING, "client->argv[%d] = *redacted*", j);
- continue;
- }
- }
-
- if (c->argv[j]->type == OBJ_STRING && sdsEncodedObject(c->argv[j])) {
- arg = (char*) c->argv[j]->ptr;
- } else {
- snprintf(buf,sizeof(buf),"Object type: %u, encoding: %u",
- c->argv[j]->type, c->argv[j]->encoding);
- arg = buf;
- }
- serverLog(LL_WARNING,"client->argv[%d] = \"%s\" (refcount: %d)",
- j, arg, c->argv[j]->refcount);
- }
-}
-
-void serverLogObjectDebugInfo(const robj *o) {
- serverLog(LL_WARNING,"Object type: %u", o->type);
- serverLog(LL_WARNING,"Object encoding: %u", o->encoding);
- serverLog(LL_WARNING,"Object refcount: %d", o->refcount);
-#if UNSAFE_CRASH_REPORT
- /* This code is now disabled. o->ptr may be unreliable to print. in some
- * cases a ziplist could have already been freed by realloc, but not yet
- * updated to o->ptr. in other cases the call to ziplistLen may need to
- * iterate on all the items in the list (and possibly crash again).
- * For some cases it may be ok to crash here again, but these could cause
- * invalid memory access which will bother valgrind and also possibly cause
- * random memory portion to be "leaked" into the logfile. */
- if (o->type == OBJ_STRING && sdsEncodedObject(o)) {
- serverLog(LL_WARNING,"Object raw string len: %zu", sdslen(o->ptr));
- if (sdslen(o->ptr) < 4096) {
- sds repr = sdscatrepr(sdsempty(),o->ptr,sdslen(o->ptr));
- serverLog(LL_WARNING,"Object raw string content: %s", repr);
- sdsfree(repr);
- }
- } else if (o->type == OBJ_LIST) {
- serverLog(LL_WARNING,"List length: %d", (int) listTypeLength(o));
- } else if (o->type == OBJ_SET) {
- serverLog(LL_WARNING,"Set size: %d", (int) setTypeSize(o));
- } else if (o->type == OBJ_HASH) {
- serverLog(LL_WARNING,"Hash size: %d", (int) hashTypeLength(o, 0));
- } else if (o->type == OBJ_ZSET) {
- serverLog(LL_WARNING,"Sorted set size: %d", (int) zsetLength(o));
- if (o->encoding == OBJ_ENCODING_SKIPLIST)
- serverLog(LL_WARNING,"Skiplist level: %d", (int) ((const zset*)o->ptr)->zsl->level);
- } else if (o->type == OBJ_STREAM) {
- serverLog(LL_WARNING,"Stream size: %d", (int) streamLength(o));
- }
-#endif
-}
-
-void _serverAssertPrintObject(const robj *o) {
- bugReportStart();
- serverLog(LL_WARNING,"=== ASSERTION FAILED OBJECT CONTEXT ===");
- serverLogObjectDebugInfo(o);
-}
-
-void _serverAssertWithInfo(const client *c, const robj *o, const char *estr, const char *file, int line) {
- if (c) _serverAssertPrintClientInfo(c);
- if (o) _serverAssertPrintObject(o);
- _serverAssert(estr,file,line);
-}
-
-__attribute__ ((noinline))
-void _serverPanic(const char *file, int line, const char *msg, ...) {
- va_list ap;
- va_start(ap,msg);
- char fmtmsg[256];
- vsnprintf(fmtmsg,sizeof(fmtmsg),msg,ap);
- va_end(ap);
-
- int new_report = bugReportStart();
- serverLog(LL_WARNING,"------------------------------------------------");
- serverLog(LL_WARNING,"!!! Software Failure. Press left mouse button to continue");
- serverLog(LL_WARNING,"Guru Meditation: %s #%s:%d",fmtmsg,file,line);
-
- if (server.crashlog_enabled) {
-#ifdef HAVE_BACKTRACE
- logStackTrace(NULL, 1, 0);
-#endif
- /* If this was a recursive panic, it what most likely generated
- * from printCrashReport. */
- if (new_report) printCrashReport();
- }
-
- // remove the signal handler so on abort() we will output the crash report.
- removeSigSegvHandlers();
- bugReportEnd(0, 0);
-}
-
-/* Start a bug report, returning 1 if this is the first time this function was called, 0 otherwise. */
-int bugReportStart(void) {
- pthread_mutex_lock(&bug_report_start_mutex);
- if (bug_report_start == 0) {
- bug_report_start = 1;
- serverLogRaw(LL_WARNING|LL_RAW,
- "\n\n=== REDIS BUG REPORT START: Cut & paste starting from here ===\n");
- pthread_mutex_unlock(&bug_report_start_mutex);
- return 1;
- }
- pthread_mutex_unlock(&bug_report_start_mutex);
- return 0;
-}
-
-#ifdef HAVE_BACKTRACE
-
-/* Returns the current eip and set it to the given new value (if its not NULL) */
-static void* getAndSetMcontextEip(ucontext_t *uc, void *eip) {
-#define NOT_SUPPORTED() do {\
- UNUSED(uc);\
- UNUSED(eip);\
- return NULL;\
-} while(0)
-#define GET_SET_RETURN(target_var, new_val) do {\
- void *old_val = (void*)target_var; \
- if (new_val) { \
- void **temp = (void**)&target_var; \
- *temp = new_val; \
- } \
- return old_val; \
-} while(0)
-#if defined(__APPLE__) && !defined(MAC_OS_10_6_DETECTED)
- /* OSX < 10.6 */
- #if defined(__x86_64__)
- GET_SET_RETURN(uc->uc_mcontext->__ss.__rip, eip);
- #elif defined(__i386__)
- GET_SET_RETURN(uc->uc_mcontext->__ss.__eip, eip);
- #else
- GET_SET_RETURN(uc->uc_mcontext->__ss.__srr0, eip);
- #endif
-#elif defined(__APPLE__) && defined(MAC_OS_10_6_DETECTED)
- /* OSX >= 10.6 */
- #if defined(_STRUCT_X86_THREAD_STATE64) && !defined(__i386__)
- GET_SET_RETURN(uc->uc_mcontext->__ss.__rip, eip);
- #elif defined(__i386__)
- GET_SET_RETURN(uc->uc_mcontext->__ss.__eip, eip);
- #else
- /* OSX ARM64 */
- void *old_val = (void*)arm_thread_state64_get_pc(uc->uc_mcontext->__ss);
- if (eip) {
- arm_thread_state64_set_pc_fptr(uc->uc_mcontext->__ss, eip);
- }
- return old_val;
- #endif
-#elif defined(__linux__)
- /* Linux */
- #if defined(__i386__) || ((defined(__X86_64__) || defined(__x86_64__)) && defined(__ILP32__))
- GET_SET_RETURN(uc->uc_mcontext.gregs[14], eip);
- #elif defined(__X86_64__) || defined(__x86_64__)
- GET_SET_RETURN(uc->uc_mcontext.gregs[16], eip);
- #elif defined(__ia64__) /* Linux IA64 */
- GET_SET_RETURN(uc->uc_mcontext.sc_ip, eip);
- #elif defined(__riscv) /* Linux RISC-V */
- GET_SET_RETURN(uc->uc_mcontext.__gregs[REG_PC], eip);
- #elif defined(__arm__) /* Linux ARM */
- GET_SET_RETURN(uc->uc_mcontext.arm_pc, eip);
- #elif defined(__aarch64__) /* Linux AArch64 */
- GET_SET_RETURN(uc->uc_mcontext.pc, eip);
- #else
- NOT_SUPPORTED();
- #endif
-#elif defined(__FreeBSD__)
- /* FreeBSD */
- #if defined(__i386__)
- GET_SET_RETURN(uc->uc_mcontext.mc_eip, eip);
- #elif defined(__x86_64__)
- GET_SET_RETURN(uc->uc_mcontext.mc_rip, eip);
- #else
- NOT_SUPPORTED();
- #endif
-#elif defined(__OpenBSD__)
- /* OpenBSD */
- #if defined(__i386__)
- GET_SET_RETURN(uc->sc_eip, eip);
- #elif defined(__x86_64__)
- GET_SET_RETURN(uc->sc_rip, eip);
- #else
- NOT_SUPPORTED();
- #endif
-#elif defined(__NetBSD__)
- #if defined(__i386__)
- GET_SET_RETURN(uc->uc_mcontext.__gregs[_REG_EIP], eip);
- #elif defined(__x86_64__)
- GET_SET_RETURN(uc->uc_mcontext.__gregs[_REG_RIP], eip);
- #else
- NOT_SUPPORTED();
- #endif
-#elif defined(__DragonFly__)
- GET_SET_RETURN(uc->uc_mcontext.mc_rip, eip);
-#elif defined(__sun) && defined(__x86_64__)
- GET_SET_RETURN(uc->uc_mcontext.gregs[REG_RIP], eip);
-#else
- NOT_SUPPORTED();
-#endif
-#undef NOT_SUPPORTED
-}
-
-REDIS_NO_SANITIZE_MSAN("memory")
-REDIS_NO_SANITIZE("address")
-void logStackContent(void **sp) {
- if (server.hide_user_data_from_log) {
- serverLog(LL_NOTICE,"hide-user-data-from-log is on, skip logging stack content to avoid spilling PII.");
- return;
- }
- int i;
- for (i = 15; i >= 0; i--) {
- unsigned long addr = (unsigned long) sp+i;
- unsigned long val = (unsigned long) sp[i];
-
- if (sizeof(long) == 4)
- serverLog(LL_WARNING, "(%08lx) -> %08lx", addr, val);
- else
- serverLog(LL_WARNING, "(%016lx) -> %016lx", addr, val);
- }
-}
-
-/* Log dump of processor registers */
-void logRegisters(ucontext_t *uc) {
- serverLog(LL_WARNING|LL_RAW, "\n------ REGISTERS ------\n");
-#define NOT_SUPPORTED() do {\
- UNUSED(uc);\
- serverLog(LL_WARNING,\
- " Dumping of registers not supported for this OS/arch");\
-} while(0)
-
-/* OSX */
-#if defined(__APPLE__) && defined(MAC_OS_10_6_DETECTED)
- /* OSX AMD64 */
- #if defined(_STRUCT_X86_THREAD_STATE64) && !defined(__i386__)
- serverLog(LL_WARNING,
- "\n"
- "RAX:%016lx RBX:%016lx\nRCX:%016lx RDX:%016lx\n"
- "RDI:%016lx RSI:%016lx\nRBP:%016lx RSP:%016lx\n"
- "R8 :%016lx R9 :%016lx\nR10:%016lx R11:%016lx\n"
- "R12:%016lx R13:%016lx\nR14:%016lx R15:%016lx\n"
- "RIP:%016lx EFL:%016lx\nCS :%016lx FS:%016lx GS:%016lx",
- (unsigned long) uc->uc_mcontext->__ss.__rax,
- (unsigned long) uc->uc_mcontext->__ss.__rbx,
- (unsigned long) uc->uc_mcontext->__ss.__rcx,
- (unsigned long) uc->uc_mcontext->__ss.__rdx,
- (unsigned long) uc->uc_mcontext->__ss.__rdi,
- (unsigned long) uc->uc_mcontext->__ss.__rsi,
- (unsigned long) uc->uc_mcontext->__ss.__rbp,
- (unsigned long) uc->uc_mcontext->__ss.__rsp,
- (unsigned long) uc->uc_mcontext->__ss.__r8,
- (unsigned long) uc->uc_mcontext->__ss.__r9,
- (unsigned long) uc->uc_mcontext->__ss.__r10,
- (unsigned long) uc->uc_mcontext->__ss.__r11,
- (unsigned long) uc->uc_mcontext->__ss.__r12,
- (unsigned long) uc->uc_mcontext->__ss.__r13,
- (unsigned long) uc->uc_mcontext->__ss.__r14,
- (unsigned long) uc->uc_mcontext->__ss.__r15,
- (unsigned long) uc->uc_mcontext->__ss.__rip,
- (unsigned long) uc->uc_mcontext->__ss.__rflags,
- (unsigned long) uc->uc_mcontext->__ss.__cs,
- (unsigned long) uc->uc_mcontext->__ss.__fs,
- (unsigned long) uc->uc_mcontext->__ss.__gs
- );
- logStackContent((void**)uc->uc_mcontext->__ss.__rsp);
- #elif defined(__i386__)
- /* OSX x86 */
- serverLog(LL_WARNING,
- "\n"
- "EAX:%08lx EBX:%08lx ECX:%08lx EDX:%08lx\n"
- "EDI:%08lx ESI:%08lx EBP:%08lx ESP:%08lx\n"
- "SS:%08lx EFL:%08lx EIP:%08lx CS :%08lx\n"
- "DS:%08lx ES:%08lx FS :%08lx GS :%08lx",
- (unsigned long) uc->uc_mcontext->__ss.__eax,
- (unsigned long) uc->uc_mcontext->__ss.__ebx,
- (unsigned long) uc->uc_mcontext->__ss.__ecx,
- (unsigned long) uc->uc_mcontext->__ss.__edx,
- (unsigned long) uc->uc_mcontext->__ss.__edi,
- (unsigned long) uc->uc_mcontext->__ss.__esi,
- (unsigned long) uc->uc_mcontext->__ss.__ebp,
- (unsigned long) uc->uc_mcontext->__ss.__esp,
- (unsigned long) uc->uc_mcontext->__ss.__ss,
- (unsigned long) uc->uc_mcontext->__ss.__eflags,
- (unsigned long) uc->uc_mcontext->__ss.__eip,
- (unsigned long) uc->uc_mcontext->__ss.__cs,
- (unsigned long) uc->uc_mcontext->__ss.__ds,
- (unsigned long) uc->uc_mcontext->__ss.__es,
- (unsigned long) uc->uc_mcontext->__ss.__fs,
- (unsigned long) uc->uc_mcontext->__ss.__gs
- );
- logStackContent((void**)uc->uc_mcontext->__ss.__esp);
- #else
- /* OSX ARM64 */
- serverLog(LL_WARNING,
- "\n"
- "x0:%016lx x1:%016lx x2:%016lx x3:%016lx\n"
- "x4:%016lx x5:%016lx x6:%016lx x7:%016lx\n"
- "x8:%016lx x9:%016lx x10:%016lx x11:%016lx\n"
- "x12:%016lx x13:%016lx x14:%016lx x15:%016lx\n"
- "x16:%016lx x17:%016lx x18:%016lx x19:%016lx\n"
- "x20:%016lx x21:%016lx x22:%016lx x23:%016lx\n"
- "x24:%016lx x25:%016lx x26:%016lx x27:%016lx\n"
- "x28:%016lx fp:%016lx lr:%016lx\n"
- "sp:%016lx pc:%016lx cpsr:%08lx\n",
- (unsigned long) uc->uc_mcontext->__ss.__x[0],
- (unsigned long) uc->uc_mcontext->__ss.__x[1],
- (unsigned long) uc->uc_mcontext->__ss.__x[2],
- (unsigned long) uc->uc_mcontext->__ss.__x[3],
- (unsigned long) uc->uc_mcontext->__ss.__x[4],
- (unsigned long) uc->uc_mcontext->__ss.__x[5],
- (unsigned long) uc->uc_mcontext->__ss.__x[6],
- (unsigned long) uc->uc_mcontext->__ss.__x[7],
- (unsigned long) uc->uc_mcontext->__ss.__x[8],
- (unsigned long) uc->uc_mcontext->__ss.__x[9],
- (unsigned long) uc->uc_mcontext->__ss.__x[10],
- (unsigned long) uc->uc_mcontext->__ss.__x[11],
- (unsigned long) uc->uc_mcontext->__ss.__x[12],
- (unsigned long) uc->uc_mcontext->__ss.__x[13],
- (unsigned long) uc->uc_mcontext->__ss.__x[14],
- (unsigned long) uc->uc_mcontext->__ss.__x[15],
- (unsigned long) uc->uc_mcontext->__ss.__x[16],
- (unsigned long) uc->uc_mcontext->__ss.__x[17],
- (unsigned long) uc->uc_mcontext->__ss.__x[18],
- (unsigned long) uc->uc_mcontext->__ss.__x[19],
- (unsigned long) uc->uc_mcontext->__ss.__x[20],
- (unsigned long) uc->uc_mcontext->__ss.__x[21],
- (unsigned long) uc->uc_mcontext->__ss.__x[22],
- (unsigned long) uc->uc_mcontext->__ss.__x[23],
- (unsigned long) uc->uc_mcontext->__ss.__x[24],
- (unsigned long) uc->uc_mcontext->__ss.__x[25],
- (unsigned long) uc->uc_mcontext->__ss.__x[26],
- (unsigned long) uc->uc_mcontext->__ss.__x[27],
- (unsigned long) uc->uc_mcontext->__ss.__x[28],
- (unsigned long) arm_thread_state64_get_fp(uc->uc_mcontext->__ss),
- (unsigned long) arm_thread_state64_get_lr(uc->uc_mcontext->__ss),
- (unsigned long) arm_thread_state64_get_sp(uc->uc_mcontext->__ss),
- (unsigned long) arm_thread_state64_get_pc(uc->uc_mcontext->__ss),
- (unsigned long) uc->uc_mcontext->__ss.__cpsr
- );
- logStackContent((void**) arm_thread_state64_get_sp(uc->uc_mcontext->__ss));
- #endif
-/* Linux */
-#elif defined(__linux__)
- /* Linux x86 */
- #if defined(__i386__) || ((defined(__X86_64__) || defined(__x86_64__)) && defined(__ILP32__))
- serverLog(LL_WARNING,
- "\n"
- "EAX:%08lx EBX:%08lx ECX:%08lx EDX:%08lx\n"
- "EDI:%08lx ESI:%08lx EBP:%08lx ESP:%08lx\n"
- "SS :%08lx EFL:%08lx EIP:%08lx CS:%08lx\n"
- "DS :%08lx ES :%08lx FS :%08lx GS:%08lx",
- (unsigned long) uc->uc_mcontext.gregs[11],
- (unsigned long) uc->uc_mcontext.gregs[8],
- (unsigned long) uc->uc_mcontext.gregs[10],
- (unsigned long) uc->uc_mcontext.gregs[9],
- (unsigned long) uc->uc_mcontext.gregs[4],
- (unsigned long) uc->uc_mcontext.gregs[5],
- (unsigned long) uc->uc_mcontext.gregs[6],
- (unsigned long) uc->uc_mcontext.gregs[7],
- (unsigned long) uc->uc_mcontext.gregs[18],
- (unsigned long) uc->uc_mcontext.gregs[17],
- (unsigned long) uc->uc_mcontext.gregs[14],
- (unsigned long) uc->uc_mcontext.gregs[15],
- (unsigned long) uc->uc_mcontext.gregs[3],
- (unsigned long) uc->uc_mcontext.gregs[2],
- (unsigned long) uc->uc_mcontext.gregs[1],
- (unsigned long) uc->uc_mcontext.gregs[0]
- );
- logStackContent((void**)uc->uc_mcontext.gregs[7]);
- #elif defined(__X86_64__) || defined(__x86_64__)
- /* Linux AMD64 */
- serverLog(LL_WARNING,
- "\n"
- "RAX:%016lx RBX:%016lx\nRCX:%016lx RDX:%016lx\n"
- "RDI:%016lx RSI:%016lx\nRBP:%016lx RSP:%016lx\n"
- "R8 :%016lx R9 :%016lx\nR10:%016lx R11:%016lx\n"
- "R12:%016lx R13:%016lx\nR14:%016lx R15:%016lx\n"
- "RIP:%016lx EFL:%016lx\nCSGSFS:%016lx",
- (unsigned long) uc->uc_mcontext.gregs[13],
- (unsigned long) uc->uc_mcontext.gregs[11],
- (unsigned long) uc->uc_mcontext.gregs[14],
- (unsigned long) uc->uc_mcontext.gregs[12],
- (unsigned long) uc->uc_mcontext.gregs[8],
- (unsigned long) uc->uc_mcontext.gregs[9],
- (unsigned long) uc->uc_mcontext.gregs[10],
- (unsigned long) uc->uc_mcontext.gregs[15],
- (unsigned long) uc->uc_mcontext.gregs[0],
- (unsigned long) uc->uc_mcontext.gregs[1],
- (unsigned long) uc->uc_mcontext.gregs[2],
- (unsigned long) uc->uc_mcontext.gregs[3],
- (unsigned long) uc->uc_mcontext.gregs[4],
- (unsigned long) uc->uc_mcontext.gregs[5],
- (unsigned long) uc->uc_mcontext.gregs[6],
- (unsigned long) uc->uc_mcontext.gregs[7],
- (unsigned long) uc->uc_mcontext.gregs[16],
- (unsigned long) uc->uc_mcontext.gregs[17],
- (unsigned long) uc->uc_mcontext.gregs[18]
- );
- logStackContent((void**)uc->uc_mcontext.gregs[15]);
- #elif defined(__riscv) /* Linux RISC-V */
- serverLog(LL_WARNING,
- "\n"
- "ra:%016lx gp:%016lx\ntp:%016lx t0:%016lx\n"
- "t1:%016lx t2:%016lx\ns0:%016lx s1:%016lx\n"
- "a0:%016lx a1:%016lx\na2:%016lx a3:%016lx\n"
- "a4:%016lx a5:%016lx\na6:%016lx a7:%016lx\n"
- "s2:%016lx s3:%016lx\ns4:%016lx s5:%016lx\n"
- "s6:%016lx s7:%016lx\ns8:%016lx s9:%016lx\n"
- "s10:%016lx s11:%016lx\nt3:%016lx t4:%016lx\n"
- "t5:%016lx t6:%016lx\n",
- (unsigned long) uc->uc_mcontext.__gregs[1],
- (unsigned long) uc->uc_mcontext.__gregs[3],
- (unsigned long) uc->uc_mcontext.__gregs[4],
- (unsigned long) uc->uc_mcontext.__gregs[5],
- (unsigned long) uc->uc_mcontext.__gregs[6],
- (unsigned long) uc->uc_mcontext.__gregs[7],
- (unsigned long) uc->uc_mcontext.__gregs[8],
- (unsigned long) uc->uc_mcontext.__gregs[9],
- (unsigned long) uc->uc_mcontext.__gregs[10],
- (unsigned long) uc->uc_mcontext.__gregs[11],
- (unsigned long) uc->uc_mcontext.__gregs[12],
- (unsigned long) uc->uc_mcontext.__gregs[13],
- (unsigned long) uc->uc_mcontext.__gregs[14],
- (unsigned long) uc->uc_mcontext.__gregs[15],
- (unsigned long) uc->uc_mcontext.__gregs[16],
- (unsigned long) uc->uc_mcontext.__gregs[17],
- (unsigned long) uc->uc_mcontext.__gregs[18],
- (unsigned long) uc->uc_mcontext.__gregs[19],
- (unsigned long) uc->uc_mcontext.__gregs[20],
- (unsigned long) uc->uc_mcontext.__gregs[21],
- (unsigned long) uc->uc_mcontext.__gregs[22],
- (unsigned long) uc->uc_mcontext.__gregs[23],
- (unsigned long) uc->uc_mcontext.__gregs[24],
- (unsigned long) uc->uc_mcontext.__gregs[25],
- (unsigned long) uc->uc_mcontext.__gregs[26],
- (unsigned long) uc->uc_mcontext.__gregs[27],
- (unsigned long) uc->uc_mcontext.__gregs[28],
- (unsigned long) uc->uc_mcontext.__gregs[29],
- (unsigned long) uc->uc_mcontext.__gregs[30],
- (unsigned long) uc->uc_mcontext.__gregs[31]
- );
- logStackContent((void**)uc->uc_mcontext.__gregs[REG_SP]);
- #elif defined(__aarch64__) /* Linux AArch64 */
- serverLog(LL_WARNING,
- "\n"
- "X18:%016lx X19:%016lx\nX20:%016lx X21:%016lx\n"
- "X22:%016lx X23:%016lx\nX24:%016lx X25:%016lx\n"
- "X26:%016lx X27:%016lx\nX28:%016lx X29:%016lx\n"
- "X30:%016lx\n"
- "pc:%016lx sp:%016lx\npstate:%016lx fault_address:%016lx\n",
- (unsigned long) uc->uc_mcontext.regs[18],
- (unsigned long) uc->uc_mcontext.regs[19],
- (unsigned long) uc->uc_mcontext.regs[20],
- (unsigned long) uc->uc_mcontext.regs[21],
- (unsigned long) uc->uc_mcontext.regs[22],
- (unsigned long) uc->uc_mcontext.regs[23],
- (unsigned long) uc->uc_mcontext.regs[24],
- (unsigned long) uc->uc_mcontext.regs[25],
- (unsigned long) uc->uc_mcontext.regs[26],
- (unsigned long) uc->uc_mcontext.regs[27],
- (unsigned long) uc->uc_mcontext.regs[28],
- (unsigned long) uc->uc_mcontext.regs[29],
- (unsigned long) uc->uc_mcontext.regs[30],
- (unsigned long) uc->uc_mcontext.pc,
- (unsigned long) uc->uc_mcontext.sp,
- (unsigned long) uc->uc_mcontext.pstate,
- (unsigned long) uc->uc_mcontext.fault_address
- );
- logStackContent((void**)uc->uc_mcontext.sp);
- #elif defined(__arm__) /* Linux ARM */
- serverLog(LL_WARNING,
- "\n"
- "R10:%016lx R9 :%016lx\nR8 :%016lx R7 :%016lx\n"
- "R6 :%016lx R5 :%016lx\nR4 :%016lx R3 :%016lx\n"
- "R2 :%016lx R1 :%016lx\nR0 :%016lx EC :%016lx\n"
- "fp: %016lx ip:%016lx\n"
- "pc:%016lx sp:%016lx\ncpsr:%016lx fault_address:%016lx\n",
- (unsigned long) uc->uc_mcontext.arm_r10,
- (unsigned long) uc->uc_mcontext.arm_r9,
- (unsigned long) uc->uc_mcontext.arm_r8,
- (unsigned long) uc->uc_mcontext.arm_r7,
- (unsigned long) uc->uc_mcontext.arm_r6,
- (unsigned long) uc->uc_mcontext.arm_r5,
- (unsigned long) uc->uc_mcontext.arm_r4,
- (unsigned long) uc->uc_mcontext.arm_r3,
- (unsigned long) uc->uc_mcontext.arm_r2,
- (unsigned long) uc->uc_mcontext.arm_r1,
- (unsigned long) uc->uc_mcontext.arm_r0,
- (unsigned long) uc->uc_mcontext.error_code,
- (unsigned long) uc->uc_mcontext.arm_fp,
- (unsigned long) uc->uc_mcontext.arm_ip,
- (unsigned long) uc->uc_mcontext.arm_pc,
- (unsigned long) uc->uc_mcontext.arm_sp,
- (unsigned long) uc->uc_mcontext.arm_cpsr,
- (unsigned long) uc->uc_mcontext.fault_address
- );
- logStackContent((void**)uc->uc_mcontext.arm_sp);
- #else
- NOT_SUPPORTED();
- #endif
-#elif defined(__FreeBSD__)
- #if defined(__x86_64__)
- serverLog(LL_WARNING,
- "\n"
- "RAX:%016lx RBX:%016lx\nRCX:%016lx RDX:%016lx\n"
- "RDI:%016lx RSI:%016lx\nRBP:%016lx RSP:%016lx\n"
- "R8 :%016lx R9 :%016lx\nR10:%016lx R11:%016lx\n"
- "R12:%016lx R13:%016lx\nR14:%016lx R15:%016lx\n"
- "RIP:%016lx EFL:%016lx\nCSGSFS:%016lx",
- (unsigned long) uc->uc_mcontext.mc_rax,
- (unsigned long) uc->uc_mcontext.mc_rbx,
- (unsigned long) uc->uc_mcontext.mc_rcx,
- (unsigned long) uc->uc_mcontext.mc_rdx,
- (unsigned long) uc->uc_mcontext.mc_rdi,
- (unsigned long) uc->uc_mcontext.mc_rsi,
- (unsigned long) uc->uc_mcontext.mc_rbp,
- (unsigned long) uc->uc_mcontext.mc_rsp,
- (unsigned long) uc->uc_mcontext.mc_r8,
- (unsigned long) uc->uc_mcontext.mc_r9,
- (unsigned long) uc->uc_mcontext.mc_r10,
- (unsigned long) uc->uc_mcontext.mc_r11,
- (unsigned long) uc->uc_mcontext.mc_r12,
- (unsigned long) uc->uc_mcontext.mc_r13,
- (unsigned long) uc->uc_mcontext.mc_r14,
- (unsigned long) uc->uc_mcontext.mc_r15,
- (unsigned long) uc->uc_mcontext.mc_rip,
- (unsigned long) uc->uc_mcontext.mc_rflags,
- (unsigned long) uc->uc_mcontext.mc_cs
- );
- logStackContent((void**)uc->uc_mcontext.mc_rsp);
- #elif defined(__i386__)
- serverLog(LL_WARNING,
- "\n"
- "EAX:%08lx EBX:%08lx ECX:%08lx EDX:%08lx\n"
- "EDI:%08lx ESI:%08lx EBP:%08lx ESP:%08lx\n"
- "SS :%08lx EFL:%08lx EIP:%08lx CS:%08lx\n"
- "DS :%08lx ES :%08lx FS :%08lx GS:%08lx",
- (unsigned long) uc->uc_mcontext.mc_eax,
- (unsigned long) uc->uc_mcontext.mc_ebx,
- (unsigned long) uc->uc_mcontext.mc_ebx,
- (unsigned long) uc->uc_mcontext.mc_edx,
- (unsigned long) uc->uc_mcontext.mc_edi,
- (unsigned long) uc->uc_mcontext.mc_esi,
- (unsigned long) uc->uc_mcontext.mc_ebp,
- (unsigned long) uc->uc_mcontext.mc_esp,
- (unsigned long) uc->uc_mcontext.mc_ss,
- (unsigned long) uc->uc_mcontext.mc_eflags,
- (unsigned long) uc->uc_mcontext.mc_eip,
- (unsigned long) uc->uc_mcontext.mc_cs,
- (unsigned long) uc->uc_mcontext.mc_es,
- (unsigned long) uc->uc_mcontext.mc_fs,
- (unsigned long) uc->uc_mcontext.mc_gs
- );
- logStackContent((void**)uc->uc_mcontext.mc_esp);
- #else
- NOT_SUPPORTED();
- #endif
-#elif defined(__OpenBSD__)
- #if defined(__x86_64__)
- serverLog(LL_WARNING,
- "\n"
- "RAX:%016lx RBX:%016lx\nRCX:%016lx RDX:%016lx\n"
- "RDI:%016lx RSI:%016lx\nRBP:%016lx RSP:%016lx\n"
- "R8 :%016lx R9 :%016lx\nR10:%016lx R11:%016lx\n"
- "R12:%016lx R13:%016lx\nR14:%016lx R15:%016lx\n"
- "RIP:%016lx EFL:%016lx\nCSGSFS:%016lx",
- (unsigned long) uc->sc_rax,
- (unsigned long) uc->sc_rbx,
- (unsigned long) uc->sc_rcx,
- (unsigned long) uc->sc_rdx,
- (unsigned long) uc->sc_rdi,
- (unsigned long) uc->sc_rsi,
- (unsigned long) uc->sc_rbp,
- (unsigned long) uc->sc_rsp,
- (unsigned long) uc->sc_r8,
- (unsigned long) uc->sc_r9,
- (unsigned long) uc->sc_r10,
- (unsigned long) uc->sc_r11,
- (unsigned long) uc->sc_r12,
- (unsigned long) uc->sc_r13,
- (unsigned long) uc->sc_r14,
- (unsigned long) uc->sc_r15,
- (unsigned long) uc->sc_rip,
- (unsigned long) uc->sc_rflags,
- (unsigned long) uc->sc_cs
- );
- logStackContent((void**)uc->sc_rsp);
- #elif defined(__i386__)
- serverLog(LL_WARNING,
- "\n"
- "EAX:%08lx EBX:%08lx ECX:%08lx EDX:%08lx\n"
- "EDI:%08lx ESI:%08lx EBP:%08lx ESP:%08lx\n"
- "SS :%08lx EFL:%08lx EIP:%08lx CS:%08lx\n"
- "DS :%08lx ES :%08lx FS :%08lx GS:%08lx",
- (unsigned long) uc->sc_eax,
- (unsigned long) uc->sc_ebx,
- (unsigned long) uc->sc_ebx,
- (unsigned long) uc->sc_edx,
- (unsigned long) uc->sc_edi,
- (unsigned long) uc->sc_esi,
- (unsigned long) uc->sc_ebp,
- (unsigned long) uc->sc_esp,
- (unsigned long) uc->sc_ss,
- (unsigned long) uc->sc_eflags,
- (unsigned long) uc->sc_eip,
- (unsigned long) uc->sc_cs,
- (unsigned long) uc->sc_es,
- (unsigned long) uc->sc_fs,
- (unsigned long) uc->sc_gs
- );
- logStackContent((void**)uc->sc_esp);
- #else
- NOT_SUPPORTED();
- #endif
-#elif defined(__NetBSD__)
- #if defined(__x86_64__)
- serverLog(LL_WARNING,
- "\n"
- "RAX:%016lx RBX:%016lx\nRCX:%016lx RDX:%016lx\n"
- "RDI:%016lx RSI:%016lx\nRBP:%016lx RSP:%016lx\n"
- "R8 :%016lx R9 :%016lx\nR10:%016lx R11:%016lx\n"
- "R12:%016lx R13:%016lx\nR14:%016lx R15:%016lx\n"
- "RIP:%016lx EFL:%016lx\nCSGSFS:%016lx",
- (unsigned long) uc->uc_mcontext.__gregs[_REG_RAX],
- (unsigned long) uc->uc_mcontext.__gregs[_REG_RBX],
- (unsigned long) uc->uc_mcontext.__gregs[_REG_RCX],
- (unsigned long) uc->uc_mcontext.__gregs[_REG_RDX],
- (unsigned long) uc->uc_mcontext.__gregs[_REG_RDI],
- (unsigned long) uc->uc_mcontext.__gregs[_REG_RSI],
- (unsigned long) uc->uc_mcontext.__gregs[_REG_RBP],
- (unsigned long) uc->uc_mcontext.__gregs[_REG_RSP],
- (unsigned long) uc->uc_mcontext.__gregs[_REG_R8],
- (unsigned long) uc->uc_mcontext.__gregs[_REG_R9],
- (unsigned long) uc->uc_mcontext.__gregs[_REG_R10],
- (unsigned long) uc->uc_mcontext.__gregs[_REG_R11],
- (unsigned long) uc->uc_mcontext.__gregs[_REG_R12],
- (unsigned long) uc->uc_mcontext.__gregs[_REG_R13],
- (unsigned long) uc->uc_mcontext.__gregs[_REG_R14],
- (unsigned long) uc->uc_mcontext.__gregs[_REG_R15],
- (unsigned long) uc->uc_mcontext.__gregs[_REG_RIP],
- (unsigned long) uc->uc_mcontext.__gregs[_REG_RFLAGS],
- (unsigned long) uc->uc_mcontext.__gregs[_REG_CS]
- );
- logStackContent((void**)uc->uc_mcontext.__gregs[_REG_RSP]);
- #elif defined(__i386__)
- serverLog(LL_WARNING,
- "\n"
- "EAX:%08lx EBX:%08lx ECX:%08lx EDX:%08lx\n"
- "EDI:%08lx ESI:%08lx EBP:%08lx ESP:%08lx\n"
- "SS :%08lx EFL:%08lx EIP:%08lx CS:%08lx\n"
- "DS :%08lx ES :%08lx FS :%08lx GS:%08lx",
- (unsigned long) uc->uc_mcontext.__gregs[_REG_EAX],
- (unsigned long) uc->uc_mcontext.__gregs[_REG_EBX],
- (unsigned long) uc->uc_mcontext.__gregs[_REG_EDX],
- (unsigned long) uc->uc_mcontext.__gregs[_REG_EDI],
- (unsigned long) uc->uc_mcontext.__gregs[_REG_ESI],
- (unsigned long) uc->uc_mcontext.__gregs[_REG_EBP],
- (unsigned long) uc->uc_mcontext.__gregs[_REG_ESP],
- (unsigned long) uc->uc_mcontext.__gregs[_REG_SS],
- (unsigned long) uc->uc_mcontext.__gregs[_REG_EFLAGS],
- (unsigned long) uc->uc_mcontext.__gregs[_REG_EIP],
- (unsigned long) uc->uc_mcontext.__gregs[_REG_CS],
- (unsigned long) uc->uc_mcontext.__gregs[_REG_ES],
- (unsigned long) uc->uc_mcontext.__gregs[_REG_FS],
- (unsigned long) uc->uc_mcontext.__gregs[_REG_GS]
- );
- #else
- NOT_SUPPORTED();
- #endif
-#elif defined(__DragonFly__)
- serverLog(LL_WARNING,
- "\n"
- "RAX:%016lx RBX:%016lx\nRCX:%016lx RDX:%016lx\n"
- "RDI:%016lx RSI:%016lx\nRBP:%016lx RSP:%016lx\n"
- "R8 :%016lx R9 :%016lx\nR10:%016lx R11:%016lx\n"
- "R12:%016lx R13:%016lx\nR14:%016lx R15:%016lx\n"
- "RIP:%016lx EFL:%016lx\nCSGSFS:%016lx",
- (unsigned long) uc->uc_mcontext.mc_rax,
- (unsigned long) uc->uc_mcontext.mc_rbx,
- (unsigned long) uc->uc_mcontext.mc_rcx,
- (unsigned long) uc->uc_mcontext.mc_rdx,
- (unsigned long) uc->uc_mcontext.mc_rdi,
- (unsigned long) uc->uc_mcontext.mc_rsi,
- (unsigned long) uc->uc_mcontext.mc_rbp,
- (unsigned long) uc->uc_mcontext.mc_rsp,
- (unsigned long) uc->uc_mcontext.mc_r8,
- (unsigned long) uc->uc_mcontext.mc_r9,
- (unsigned long) uc->uc_mcontext.mc_r10,
- (unsigned long) uc->uc_mcontext.mc_r11,
- (unsigned long) uc->uc_mcontext.mc_r12,
- (unsigned long) uc->uc_mcontext.mc_r13,
- (unsigned long) uc->uc_mcontext.mc_r14,
- (unsigned long) uc->uc_mcontext.mc_r15,
- (unsigned long) uc->uc_mcontext.mc_rip,
- (unsigned long) uc->uc_mcontext.mc_rflags,
- (unsigned long) uc->uc_mcontext.mc_cs
- );
- logStackContent((void**)uc->uc_mcontext.mc_rsp);
-#elif defined(__sun)
- #if defined(__x86_64__)
- serverLog(LL_WARNING,
- "\n"
- "RAX:%016lx RBX:%016lx\nRCX:%016lx RDX:%016lx\n"
- "RDI:%016lx RSI:%016lx\nRBP:%016lx RSP:%016lx\n"
- "R8 :%016lx R9 :%016lx\nR10:%016lx R11:%016lx\n"
- "R12:%016lx R13:%016lx\nR14:%016lx R15:%016lx\n"
- "RIP:%016lx EFL:%016lx\nCSGSFS:%016lx",
- (unsigned long) uc->uc_mcontext.gregs[REG_RAX],
- (unsigned long) uc->uc_mcontext.gregs[REG_RBX],
- (unsigned long) uc->uc_mcontext.gregs[REG_RCX],
- (unsigned long) uc->uc_mcontext.gregs[REG_RDX],
- (unsigned long) uc->uc_mcontext.gregs[REG_RDI],
- (unsigned long) uc->uc_mcontext.gregs[REG_RSI],
- (unsigned long) uc->uc_mcontext.gregs[REG_RBP],
- (unsigned long) uc->uc_mcontext.gregs[REG_RSP],
- (unsigned long) uc->uc_mcontext.gregs[REG_R8],
- (unsigned long) uc->uc_mcontext.gregs[REG_R9],
- (unsigned long) uc->uc_mcontext.gregs[REG_R10],
- (unsigned long) uc->uc_mcontext.gregs[REG_R11],
- (unsigned long) uc->uc_mcontext.gregs[REG_R12],
- (unsigned long) uc->uc_mcontext.gregs[REG_R13],
- (unsigned long) uc->uc_mcontext.gregs[REG_R14],
- (unsigned long) uc->uc_mcontext.gregs[REG_R15],
- (unsigned long) uc->uc_mcontext.gregs[REG_RIP],
- (unsigned long) uc->uc_mcontext.gregs[REG_RFL],
- (unsigned long) uc->uc_mcontext.gregs[REG_CS]
- );
- logStackContent((void**)uc->uc_mcontext.gregs[REG_RSP]);
- #endif
-#else
- NOT_SUPPORTED();
-#endif
-#undef NOT_SUPPORTED
-}
-
-#endif /* HAVE_BACKTRACE */
-
-/* Return a file descriptor to write directly to the Redis log with the
- * write(2) syscall, that can be used in critical sections of the code
- * where the rest of Redis can't be trusted (for example during the memory
- * test) or when an API call requires a raw fd.
- *
- * Close it with closeDirectLogFiledes(). */
-int openDirectLogFiledes(void) {
- int log_to_stdout = server.logfile[0] == '\0';
- int fd = log_to_stdout ?
- STDOUT_FILENO :
- open(server.logfile, O_APPEND|O_CREAT|O_WRONLY, 0644);
- return fd;
-}
-
-/* Used to close what closeDirectLogFiledes() returns. */
-void closeDirectLogFiledes(int fd) {
- int log_to_stdout = server.logfile[0] == '\0';
- if (!log_to_stdout) close(fd);
-}
-
-#if defined(HAVE_BACKTRACE) && defined(__linux__)
-static int stacktrace_pipe[2] = {0};
-static void setupStacktracePipe(void) {
- if (-1 == anetPipe(stacktrace_pipe, O_CLOEXEC | O_NONBLOCK, O_CLOEXEC | O_NONBLOCK)) {
- serverLog(LL_WARNING, "setupStacktracePipe failed: %s", strerror(errno));
- }
-}
-#else
-static void setupStacktracePipe(void) {/* we don't need a pipe to write the stacktraces */}
-#endif
-#ifdef HAVE_BACKTRACE
-#define BACKTRACE_MAX_SIZE 100
-
-#ifdef __linux__
-#if !defined(_GNU_SOURCE)
-#define _GNU_SOURCE
-#endif
-#include <sys/prctl.h>
-#include <unistd.h>
-#include <sys/syscall.h>
-#include <dirent.h>
-
-#define TIDS_MAX_SIZE 50
-static size_t get_ready_to_signal_threads_tids(int sig_num, pid_t tids[TIDS_MAX_SIZE]);
-
-typedef struct {
- char thread_name[16];
- int trace_size;
- pid_t tid;
- void *trace[BACKTRACE_MAX_SIZE];
-} stacktrace_data;
-
-__attribute__ ((noinline)) static void collect_stacktrace_data(void) {
- stacktrace_data trace_data = {{0}};
-
- /* Get the stack trace first! */
- trace_data.trace_size = backtrace(trace_data.trace, BACKTRACE_MAX_SIZE);
-
- /* get the thread name */
- prctl(PR_GET_NAME, trace_data.thread_name);
-
- /* get the thread id */
- trace_data.tid = syscall(SYS_gettid);
-
- /* Send the output to the main process*/
- if (write(stacktrace_pipe[1], &trace_data, sizeof(trace_data)) == -1) {/* Avoid warning. */};
-}
-
-__attribute__ ((noinline))
-static void writeStacktraces(int fd, int uplevel) {
- /* get the list of all the process's threads that don't block or ignore the THREADS_SIGNAL */
- pid_t tids[TIDS_MAX_SIZE];
- size_t len_tids = get_ready_to_signal_threads_tids(THREADS_SIGNAL, tids);
- if (!len_tids) {
- serverLogRawFromHandler(LL_WARNING, "writeStacktraces(): Failed to get the process's threads.");
- }
-
- char buff[PIPE_BUF];
- /* Clear the stacktraces pipe */
- while (read(stacktrace_pipe[0], &buff, sizeof(buff)) > 0) {}
-
- /* ThreadsManager_runOnThreads returns 0 if it is already running */
- if (!ThreadsManager_runOnThreads(tids, len_tids, collect_stacktrace_data)) return;
-
- size_t collected = 0;
-
- pid_t calling_tid = syscall(SYS_gettid);
-
- /* Read the stacktrace_pipe until it's empty */
- stacktrace_data curr_stacktrace_data = {{0}};
- while (read(stacktrace_pipe[0], &curr_stacktrace_data, sizeof(curr_stacktrace_data)) > 0) {
- /* stacktrace header includes the tid and the thread's name */
- snprintf_async_signal_safe(buff, sizeof(buff), "\n%d %s", curr_stacktrace_data.tid, curr_stacktrace_data.thread_name);
- if (write(fd,buff,strlen(buff)) == -1) {/* Avoid warning. */};
-
- /* skip kernel call to the signal handler, the signal handler and the callback addresses */
- int curr_uplevel = 3;
-
- if (curr_stacktrace_data.tid == calling_tid) {
- /* skip signal syscall and ThreadsManager_runOnThreads */
- curr_uplevel += uplevel + 2;
- /* Add an indication to header of the thread that is handling the log file */
- if (write(fd," *\n",strlen(" *\n")) == -1) {/* Avoid warning. */};
- } else {
- /* just add a new line */
- if (write(fd,"\n",strlen("\n")) == -1) {/* Avoid warning. */};
- }
-
- /* add the stacktrace */
- backtrace_symbols_fd(curr_stacktrace_data.trace+curr_uplevel, curr_stacktrace_data.trace_size-curr_uplevel, fd);
-
- ++collected;
- }
-
- snprintf_async_signal_safe(buff, sizeof(buff), "\n%lu/%lu expected stacktraces.\n", (long unsigned)(collected), (long unsigned)len_tids);
- if (write(fd,buff,strlen(buff)) == -1) {/* Avoid warning. */};
-
-}
-
-#endif /* __linux__ */
-__attribute__ ((noinline))
-static void writeCurrentThreadsStackTrace(int fd, int uplevel) {
- void *trace[BACKTRACE_MAX_SIZE];
-
- int trace_size = backtrace(trace, BACKTRACE_MAX_SIZE);
-
- char *msg = "\nBacktrace:\n";
- if (write(fd,msg,strlen(msg)) == -1) {/* Avoid warning. */};
- backtrace_symbols_fd(trace+uplevel, trace_size-uplevel, fd);
-}
-
-/* Logs the stack trace using the backtrace() call. This function is designed
- * to be called from signal handlers safely.
- * The eip argument is optional (can take NULL).
- * The uplevel argument indicates how many of the calling functions to skip.
- * Functions that are taken in consideration in "uplevel" should be declared with
- * __attribute__ ((noinline)) to make sure the compiler won't inline them.
- */
-__attribute__ ((noinline))
-void logStackTrace(void *eip, int uplevel, int current_thread) {
- int fd = openDirectLogFiledes();
- char *msg;
- uplevel++; /* skip this function */
-
- if (fd == -1) return; /* If we can't log there is anything to do. */
-
- msg = "\n------ STACK TRACE ------\n";
- if (write(fd,msg,strlen(msg)) == -1) {/* Avoid warning. */};
-
- if (eip) {
- /* Write EIP to the log file*/
- msg = "EIP:\n";
- if (write(fd,msg,strlen(msg)) == -1) {/* Avoid warning. */};
- backtrace_symbols_fd(&eip, 1, fd);
- }
-
- /* Write symbols to log file */
- ++uplevel;
-#ifdef __linux__
- if (current_thread) {
- writeCurrentThreadsStackTrace(fd, uplevel);
- } else {
- writeStacktraces(fd, uplevel);
- }
-#else
- /* Outside of linux, we only support writing the current thread. */
- UNUSED(current_thread);
- writeCurrentThreadsStackTrace(fd, uplevel);
-#endif
- msg = "\n------ STACK TRACE DONE ------\n";
- if (write(fd,msg,strlen(msg)) == -1) {/* Avoid warning. */};
-
-
- /* Cleanup */
- closeDirectLogFiledes(fd);
-}
-
-#endif /* HAVE_BACKTRACE */
-
-sds genClusterDebugString(sds infostring) {
- sds cluster_info = genClusterInfoString();
- sds cluster_nodes = clusterGenNodesDescription(NULL, 0, 0);
-
- infostring = sdscatprintf(infostring, "\r\n# Cluster info\r\n");
- infostring = sdscatsds(infostring, cluster_info);
- infostring = sdscatprintf(infostring, "\n------ CLUSTER NODES OUTPUT ------\n");
- infostring = sdscatsds(infostring, cluster_nodes);
-
- sdsfree(cluster_info);
- sdsfree(cluster_nodes);
-
- return infostring;
-}
-
-/* Log global server info */
-void logServerInfo(void) {
- sds infostring, clients;
- serverLogRaw(LL_WARNING|LL_RAW, "\n------ INFO OUTPUT ------\n");
- int all = 0, everything = 0;
- robj *argv[1];
- argv[0] = createStringObject("all", strlen("all"));
- dict *section_dict = genInfoSectionDict(argv, 1, NULL, &all, &everything);
- infostring = genRedisInfoString(section_dict, all, everything);
- if (server.cluster_enabled){
- infostring = genClusterDebugString(infostring);
- }
- serverLogRaw(LL_WARNING|LL_RAW, infostring);
- serverLogRaw(LL_WARNING|LL_RAW, "\n------ CLIENT LIST OUTPUT ------\n");
- clients = getAllClientsInfoString(-1);
- serverLogRaw(LL_WARNING|LL_RAW, clients);
- sdsfree(infostring);
- sdsfree(clients);
- releaseInfoSectionDict(section_dict);
- decrRefCount(argv[0]);
-}
-
-/* Log certain config values, which can be used for debugging */
-void logConfigDebugInfo(void) {
- sds configstring;
- configstring = getConfigDebugInfo();
- serverLogRaw(LL_WARNING|LL_RAW, "\n------ CONFIG DEBUG OUTPUT ------\n");
- serverLogRaw(LL_WARNING|LL_RAW, configstring);
- sdsfree(configstring);
-}
-
-/* Log modules info. Something we wanna do last since we fear it may crash. */
-void logModulesInfo(void) {
- serverLogRaw(LL_WARNING|LL_RAW, "\n------ MODULES INFO OUTPUT ------\n");
- sds infostring = modulesCollectInfo(sdsempty(), NULL, 1, 0);
- serverLogRaw(LL_WARNING|LL_RAW, infostring);
- sdsfree(infostring);
-}
-
-/* Log information about the "current" client, that is, the client that is
- * currently being served by Redis. May be NULL if Redis is not serving a
- * client right now. */
-void logCurrentClient(client *cc, const char *title) {
- if (cc == NULL) return;
-
- sds client;
- int j;
- struct redisCommand *cmd = NULL;
- struct cmdToken tokens = {{0}};
-
- serverLog(LL_WARNING|LL_RAW, "\n------ %s CLIENT INFO ------\n", title);
- client = catClientInfoString(sdsempty(),cc);
- serverLog(LL_WARNING|LL_RAW,"%s\n", client);
- sdsfree(client);
- serverLog(LL_WARNING|LL_RAW,"argc: '%d'\n", cc->argc);
- if (server.hide_user_data_from_log) {
- cmd = lookupCommand(cc->argv, cc->argc);
- if (cmd)
- cmdTokenGetFromCommand(&tokens, cmd);
- }
-
- for (j = 0; j < cc->argc; j++) {
- /* Allow command name, subcommand name and command tokens in the log. */
- if (server.hide_user_data_from_log && (j != 0 && !(j == 1 && cmd && cmd->parent))) {
- if (!cmdTokenCheck(&tokens, cc->argv[j])) {
- serverLog(LL_WARNING|LL_RAW, "argv[%d]: '*redacted*'\n", j);
- continue;
- }
- }
- robj *decoded;
- decoded = getDecodedObject(cc->argv[j]);
- sds repr = sdscatrepr(sdsempty(),decoded->ptr, min(sdslen(decoded->ptr), 1024));
- serverLog(LL_WARNING|LL_RAW,"argv[%d]: '%s'\n", j, (char*)repr);
- if (!strcasecmp(decoded->ptr, "auth") || !strcasecmp(decoded->ptr, "auth2")) {
- sdsfree(repr);
- decrRefCount(decoded);
- break;
- }
- sdsfree(repr);
- decrRefCount(decoded);
- }
- /* Check if the first argument, usually a key, is found inside the
- * selected DB, and if so print info about the associated object. */
- if (cc->argc > 1) {
- robj *key = getDecodedObject(cc->argv[1]);
- kvobj *kv = dbFind(cc->db, key->ptr);
- if (kv) {
- serverLog(LL_WARNING,"key '%s' found in DB containing the following object:", (char*)key->ptr);
- serverLogObjectDebugInfo(kv);
- }
- decrRefCount(key);
- }
-}
-
-#if defined(HAVE_PROC_MAPS)
-
-#define MEMTEST_MAX_REGIONS 128
-
-/* A non destructive memory test executed during segfault. */
-int memtest_test_linux_anonymous_maps(void) {
- FILE *fp;
- char line[1024];
- char logbuf[1024];
- size_t start_addr, end_addr, size;
- size_t start_vect[MEMTEST_MAX_REGIONS];
- size_t size_vect[MEMTEST_MAX_REGIONS];
- int regions = 0, j;
-
- int fd = openDirectLogFiledes();
- if (fd == -1) return 0;
-
- fp = fopen("/proc/self/maps","r");
- if (!fp) {
- closeDirectLogFiledes(fd);
- return 0;
- }
- while(fgets(line,sizeof(line),fp) != NULL) {
- char *start, *end, *p = line;
-
- start = p;
- p = strchr(p,'-');
- if (!p) continue;
- *p++ = '\0';
- end = p;
- p = strchr(p,' ');
- if (!p) continue;
- *p++ = '\0';
- if (strstr(p,"stack") ||
- strstr(p,"vdso") ||
- strstr(p,"vsyscall")) continue;
- if (!strstr(p,"00:00")) continue;
- if (!strstr(p,"rw")) continue;
-
- start_addr = strtoul(start,NULL,16);
- end_addr = strtoul(end,NULL,16);
- size = end_addr-start_addr;
-
- start_vect[regions] = start_addr;
- size_vect[regions] = size;
- snprintf(logbuf,sizeof(logbuf),
- "*** Preparing to test memory region %lx (%lu bytes)\n",
- (unsigned long) start_vect[regions],
- (unsigned long) size_vect[regions]);
- if (write(fd,logbuf,strlen(logbuf)) == -1) { /* Nothing to do. */ }
- regions++;
- }
-
- int errors = 0;
- for (j = 0; j < regions; j++) {
- if (write(fd,".",1) == -1) { /* Nothing to do. */ }
- errors += memtest_preserving_test((void*)start_vect[j],size_vect[j],1);
- if (write(fd, errors ? "E" : "O",1) == -1) { /* Nothing to do. */ }
- }
- if (write(fd,"\n",1) == -1) { /* Nothing to do. */ }
-
- /* NOTE: It is very important to close the file descriptor only now
- * because closing it before may result into unmapping of some memory
- * region that we are testing. */
- fclose(fp);
- closeDirectLogFiledes(fd);
- return errors;
-}
-#endif /* HAVE_PROC_MAPS */
-
-static void killMainThread(void) {
- int err;
- if (pthread_self() != server.main_thread_id && pthread_cancel(server.main_thread_id) == 0) {
- if ((err = pthread_join(server.main_thread_id,NULL)) != 0) {
- serverLog(LL_WARNING, "main thread can not be joined: %s", strerror(err));
- } else {
- serverLog(LL_WARNING, "main thread terminated");
- }
- }
-}
-
-/* Kill the running threads (other than current) in an unclean way. This function
- * should be used only when it's critical to stop the threads for some reason.
- * Currently Redis does this only on crash (for instance on SIGSEGV) in order
- * to perform a fast memory check without other threads messing with memory. */
-void killThreads(void) {
- killMainThread();
- bioKillThreads();
- killIOThreads();
-}
-
-void doFastMemoryTest(void) {
-#if defined(HAVE_PROC_MAPS)
- if (server.memcheck_enabled) {
- /* Test memory */
- serverLogRaw(LL_WARNING|LL_RAW, "\n------ FAST MEMORY TEST ------\n");
- killThreads();
- if (memtest_test_linux_anonymous_maps()) {
- serverLogRaw(LL_WARNING|LL_RAW,
- "!!! MEMORY ERROR DETECTED! Check your memory ASAP !!!\n");
- } else {
- serverLogRaw(LL_WARNING|LL_RAW,
- "Fast memory test PASSED, however your memory can still be broken. Please run a memory test for several hours if possible.\n");
- }
- }
-#endif /* HAVE_PROC_MAPS */
-}
-
-/* Scans the (assumed) x86 code starting at addr, for a max of `len`
- * bytes, searching for E8 (callq) opcodes, and dumping the symbols
- * and the call offset if they appear to be valid. */
-void dumpX86Calls(void *addr, size_t len) {
- size_t j;
- unsigned char *p = addr;
- Dl_info info;
- /* Hash table to best-effort avoid printing the same symbol
- * multiple times. */
- unsigned long ht[256] = {0};
-
- if (len < 5) return;
- for (j = 0; j < len-4; j++) {
- if (p[j] != 0xE8) continue; /* Not an E8 CALL opcode. */
- unsigned long target = (unsigned long)addr+j+5;
- uint32_t tmp;
- memcpy(&tmp, p+j+1, sizeof(tmp));
- target += tmp;
- if (dladdr((void*)target, &info) != 0 && info.dli_sname != NULL) {
- if (ht[target&0xff] != target) {
- printf("Function at 0x%lx is %s\n",target,info.dli_sname);
- ht[target&0xff] = target;
- }
- j += 4; /* Skip the 32 bit immediate. */
- }
- }
-}
-
-void dumpCodeAroundEIP(void *eip) {
- Dl_info info;
- if (dladdr(eip, &info) != 0) {
- serverLog(LL_WARNING|LL_RAW,
- "\n------ DUMPING CODE AROUND EIP ------\n"
- "Symbol: %s (base: %p)\n"
- "Module: %s (base %p)\n"
- "$ xxd -r -p /tmp/dump.hex /tmp/dump.bin\n"
- "$ objdump --adjust-vma=%p -D -b binary -m i386:x86-64 /tmp/dump.bin\n"
- "------\n",
- info.dli_sname, info.dli_saddr, info.dli_fname, info.dli_fbase,
- info.dli_saddr);
- size_t len = (long)eip - (long)info.dli_saddr;
- unsigned long sz = sysconf(_SC_PAGESIZE);
- if (len < 1<<13) { /* we don't have functions over 8k (verified) */
- /* Find the address of the next page, which is our "safety"
- * limit when dumping. Then try to dump just 128 bytes more
- * than EIP if there is room, or stop sooner. */
- void *base = (void *)info.dli_saddr;
- unsigned long next = ((unsigned long)eip + sz) & ~(sz-1);
- unsigned long end = (unsigned long)eip + 128;
- if (end > next) end = next;
- len = end - (unsigned long)base;
- serverLogHexDump(LL_WARNING, "dump of function",
- base, len);
- dumpX86Calls(base, len);
- }
- }
-}
-
-void invalidFunctionWasCalled(void) {}
-
-typedef void (*invalidFunctionWasCalledType)(void);
-
-__attribute__ ((noinline))
-static void sigsegvHandler(int sig, siginfo_t *info, void *secret) {
- UNUSED(secret);
- UNUSED(info);
- int print_full_crash_info = 1;
- /* Check if it is safe to enter the signal handler. second thread crashing at the same time will deadlock. */
- if(pthread_mutex_lock(&signal_handler_lock) == EDEADLK) {
- /* If this thread already owns the lock (meaning we crashed during handling a signal) switch
- * to printing the minimal information about the crash. */
- serverLogRawFromHandler(LL_WARNING,
- "Crashed running signal handler. Providing reduced version of recursive crash report.");
- print_full_crash_info = 0;
- }
-
- bugReportStart();
- serverLog(LL_WARNING,
- "Redis %s crashed by signal: %d, si_code: %d", REDIS_VERSION, sig, info->si_code);
- if (sig == SIGSEGV || sig == SIGBUS) {
- serverLog(LL_WARNING,
- "Accessing address: %p", (void*)info->si_addr);
- }
- if (info->si_code == SI_USER && info->si_pid != -1) {
- serverLog(LL_WARNING, "Killed by PID: %ld, UID: %d", (long) info->si_pid, info->si_uid);
- }
-
-#ifdef HAVE_BACKTRACE
- ucontext_t *uc = (ucontext_t*) secret;
- void *eip = getAndSetMcontextEip(uc, NULL);
- if (eip != NULL) {
- serverLog(LL_WARNING,
- "Crashed running the instruction at: %p", eip);
- }
-
- if (eip == info->si_addr) {
- /* When eip matches the bad address, it's an indication that we crashed when calling a non-mapped
- * function pointer. In that case the call to backtrace will crash trying to access that address and we
- * won't get a crash report logged. Set it to a valid point to avoid that crash. */
-
- /* This trick allow to avoid compiler warning */
- void *ptr;
- invalidFunctionWasCalledType *ptr_ptr = (invalidFunctionWasCalledType*)&ptr;
- *ptr_ptr = invalidFunctionWasCalled;
- getAndSetMcontextEip(uc, ptr);
- }
-
- /* When printing the reduced crash info, just print the current thread
- * to avoid race conditions with the multi-threaded stack collector. */
- logStackTrace(eip, 1, !print_full_crash_info);
-
- if (eip == info->si_addr) {
- /* Restore old eip */
- getAndSetMcontextEip(uc, eip);
- }
-
- logRegisters(uc);
-#endif
-
- if (print_full_crash_info) printCrashReport();
-
-#ifdef HAVE_BACKTRACE
- if (eip != NULL)
- dumpCodeAroundEIP(eip);
-#endif
-
- bugReportEnd(1, sig);
-}
-
-void setupDebugSigHandlers(void) {
- setupStacktracePipe();
-
- setupSigSegvHandler();
-
- struct sigaction act;
-
- sigemptyset(&act.sa_mask);
- act.sa_flags = SA_SIGINFO;
- act.sa_sigaction = sigalrmSignalHandler;
- sigaction(SIGALRM, &act, NULL);
-}
-
-void setupSigSegvHandler(void) {
- /* Initialize the signal handler lock.
- Attempting to initialize an already initialized mutex or mutexattr results in undefined behavior. */
- if (!signal_handler_lock_initialized) {
- /* Set signal handler with error checking attribute. re-lock within the same thread will error. */
- pthread_mutexattr_init(&signal_handler_lock_attr);
- pthread_mutexattr_settype(&signal_handler_lock_attr, PTHREAD_MUTEX_ERRORCHECK);
- pthread_mutex_init(&signal_handler_lock, &signal_handler_lock_attr);
-
- pthread_mutexattr_init(&bug_report_start_attr);
- /* Use recursive to avoid deadlock when a signal is raised during bugReportStart(). */
- pthread_mutexattr_settype(&bug_report_start_attr, PTHREAD_MUTEX_RECURSIVE);
- pthread_mutex_init(&bug_report_start_mutex, &bug_report_start_attr);
-
- signal_handler_lock_initialized = 1;
- }
-
- struct sigaction act;
-
- sigemptyset(&act.sa_mask);
- /* SA_NODEFER to disables adding the signal to the signal mask of the
- * calling process on entry to the signal handler unless it is included in the sa_mask field. */
- /* SA_SIGINFO flag is set to raise the function defined in sa_sigaction.
- * Otherwise, sa_handler is used. */
- act.sa_flags = SA_NODEFER | SA_SIGINFO;
- act.sa_sigaction = sigsegvHandler;
- if(server.crashlog_enabled) {
- sigaction(SIGSEGV, &act, NULL);
- sigaction(SIGBUS, &act, NULL);
- sigaction(SIGFPE, &act, NULL);
- sigaction(SIGILL, &act, NULL);
- sigaction(SIGABRT, &act, NULL);
- }
-}
-
-void removeSigSegvHandlers(void) {
- struct sigaction act;
- sigemptyset(&act.sa_mask);
- act.sa_flags = SA_NODEFER | SA_RESETHAND;
- act.sa_handler = SIG_DFL;
- sigaction(SIGSEGV, &act, NULL);
- sigaction(SIGBUS, &act, NULL);
- sigaction(SIGFPE, &act, NULL);
- sigaction(SIGILL, &act, NULL);
- sigaction(SIGABRT, &act, NULL);
-}
-
-void printCrashReport(void) {
- atomicSet(server.crashing, 1);
-
- /* Log INFO and CLIENT LIST */
- logServerInfo();
-
- /* Log the current client */
- logCurrentClient(server.current_client, "CURRENT");
- logCurrentClient(server.executing_client, "EXECUTING");
-
- /* Log modules info. Something we wanna do last since we fear it may crash. */
- logModulesInfo();
-
- /* Log debug config information, which are some values
- * which may be useful for debugging crashes. */
- logConfigDebugInfo();
-
- /* Run memory test in case the crash was triggered by memory corruption. */
- doFastMemoryTest();
-}
-
-void bugReportEnd(int killViaSignal, int sig) {
- struct sigaction act;
-
- serverLogRawFromHandler(LL_WARNING|LL_RAW,
-"\n=== REDIS BUG REPORT END. Make sure to include from START to END. ===\n\n"
-" Please report the crash by opening an issue on github:\n\n"
-" http://github.com/redis/redis/issues\n\n"
-" If a Redis module was involved, please open in the module's repo instead.\n\n"
-" Suspect RAM error? Use redis-server --test-memory to verify it.\n\n"
-" Some other issues could be detected by redis-server --check-system\n"
-);
-
- /* free(messages); Don't call free() with possibly corrupted memory. */
- if (server.daemonize && server.supervised == 0 && server.pidfile) unlink(server.pidfile);
-
- if (!killViaSignal) {
- /* To avoid issues with valgrind, we may wanna exit rather than generate a signal */
- if (server.use_exit_on_panic) {
- /* Using _exit to bypass false leak reports by gcc ASAN */
- fflush(stdout);
- _exit(1);
- }
- abort();
- }
-
- /* Make sure we exit with the right signal at the end. So for instance
- * the core will be dumped if enabled. */
- sigemptyset (&act.sa_mask);
- act.sa_flags = 0;
- act.sa_handler = SIG_DFL;
- sigaction (sig, &act, NULL);
- kill(getpid(),sig);
-}
-
-/* ==================== Logging functions for debugging ===================== */
-
-void serverLogHexDump(int level, char *descr, void *value, size_t len) {
- char buf[65], *b;
- unsigned char *v = value;
- char charset[] = "0123456789abcdef";
-
- serverLog(level,"%s (hexdump of %zu bytes):", descr, len);
- b = buf;
- while(len) {
- b[0] = charset[(*v)>>4];
- b[1] = charset[(*v)&0xf];
- b[2] = '\0';
- b += 2;
- len--;
- v++;
- if (b-buf == 64 || len == 0) {
- serverLogRaw(level|LL_RAW,buf);
- b = buf;
- }
- }
- serverLogRaw(level|LL_RAW,"\n");
-}
-
-/* =========================== Software Watchdog ============================ */
-#include <sys/time.h>
-
-void sigalrmSignalHandler(int sig, siginfo_t *info, void *secret) {
- /* Save and restore errno to avoid spoiling it's value as caught by
- * WARNING: ThreadSanitizer: signal handler spoils errno */
- int save_errno = errno;
-#ifdef HAVE_BACKTRACE
- ucontext_t *uc = (ucontext_t*) secret;
-#else
- (void)secret;
-#endif
- UNUSED(sig);
-
- /* SIGALRM can be sent explicitly to the process calling kill() to get the stacktraces,
- or every watchdog_period interval. In the last case, si_pid is not set */
- if(info->si_pid == 0) {
- serverLogRawFromHandler(LL_WARNING,"\n--- WATCHDOG TIMER EXPIRED ---");
- } else {
- serverLogRawFromHandler(LL_WARNING, "\nReceived SIGALRM");
- }
-#ifdef HAVE_BACKTRACE
- logStackTrace(getAndSetMcontextEip(uc, NULL), 1, 0);
-#else
- serverLogRawFromHandler(LL_WARNING,"Sorry: no support for backtrace().");
-#endif
- serverLogRawFromHandler(LL_WARNING,"--------\n");
- errno = save_errno;
-}
-
-/* Schedule a SIGALRM delivery after the specified period in milliseconds.
- * If a timer is already scheduled, this function will re-schedule it to the
- * specified time. If period is 0 the current timer is disabled. */
-void watchdogScheduleSignal(int period) {
- struct itimerval it;
-
- /* Will stop the timer if period is 0. */
- it.it_value.tv_sec = period/1000;
- it.it_value.tv_usec = (period%1000)*1000;
- /* Don't automatically restart. */
- it.it_interval.tv_sec = 0;
- it.it_interval.tv_usec = 0;
- setitimer(ITIMER_REAL, &it, NULL);
-}
-void applyWatchdogPeriod(void) {
- /* Disable watchdog when period is 0 */
- if (server.watchdog_period == 0) {
- watchdogScheduleSignal(0); /* Stop the current timer. */
- } else {
- /* If the configured period is smaller than twice the timer period, it is
- * too short for the software watchdog to work reliably. Fix it now
- * if needed. */
- int min_period = (1000/server.hz)*2;
- if (server.watchdog_period < min_period) server.watchdog_period = min_period;
- watchdogScheduleSignal(server.watchdog_period); /* Adjust the current timer. */
- }
-}
-
-void debugPauseProcess(void) {
- serverLog(LL_NOTICE, "Process is about to stop.");
- raise(SIGSTOP);
- serverLog(LL_NOTICE, "Process has been continued.");
-}
-
-/* Positive input is sleep time in microseconds. Negative input is fractions
- * of microseconds, i.e. -10 means 100 nanoseconds. */
-void debugDelay(int usec) {
- /* Since even the shortest sleep results in context switch and system call,
- * the way we achieve short sleeps is by statistically sleeping less often. */
- if (usec < 0) usec = (rand() % -usec) == 0 ? 1: 0;
- if (usec) usleep(usec);
-}
-
-#ifdef HAVE_BACKTRACE
-#ifdef __linux__
-
-/* =========================== Stacktrace Utils ============================ */
-
-
-
-/** If it doesn't block and doesn't ignore, return 1 (the thread will handle the signal)
- * If thread tid blocks or ignores sig_num returns 0 (thread is not ready to catch the signal).
- * also returns 0 if something is wrong and prints a warning message to the log file **/
-static int is_thread_ready_to_signal(const char *proc_pid_task_path, const char *tid, int sig_num) {
- /* Open the threads status file path /proc/<pid>/task/<tid>/status */
- char path_buff[PATH_MAX];
- snprintf_async_signal_safe(path_buff, PATH_MAX, "%s/%s/status", proc_pid_task_path, tid);
-
- int thread_status_file = open(path_buff, O_RDONLY);
- char buff[PATH_MAX];
- if (thread_status_file == -1) {
- serverLogFromHandler(LL_WARNING, "tid:%s: failed to open %s file", tid, path_buff);
- return 0;
- }
-
- int ret = 1;
- size_t field_name_len = strlen("SigBlk:\t"); /* SigIgn has the same length */
- char *line = NULL;
- size_t fields_count = 2;
- while ((line = fgets_async_signal_safe(buff, PATH_MAX, thread_status_file)) && fields_count) {
- /* iterate the file until we reach SigBlk or SigIgn field line */
- if (!strncmp(buff, "SigBlk:\t", field_name_len) || !strncmp(buff, "SigIgn:\t", field_name_len)) {
- line = buff + field_name_len;
- unsigned long sig_mask;
- if (-1 == string2ul_base16_async_signal_safe(line, sizeof(buff), &sig_mask)) {
- serverLogRawFromHandler(LL_WARNING, "Can't convert signal mask to an unsigned long due to an overflow");
- ret = 0;
- break;
- }
-
- /* The bit position in a signal mask aligns with the signal number. Since signal numbers start from 1
- we need to adjust the signal number by subtracting 1 to align it correctly with the zero-based indexing used */
- if (sig_mask & (1L << (sig_num - 1))) { /* if the signal is blocked/ignored return 0 */
- ret = 0;
- break;
- }
- --fields_count;
- }
- }
-
- close(thread_status_file);
-
- /* if we reached EOF, it means we haven't found SigBlk or/and SigIgn, something is wrong */
- if (line == NULL) {
- ret = 0;
- serverLogFromHandler(LL_WARNING, "tid:%s: failed to find SigBlk or/and SigIgn field(s) in %s/%s/status file", tid, proc_pid_task_path, tid);
- }
- return ret;
-}
-
-/** We are using syscall(SYS_getdents64) to read directories, which unlike opendir(), is considered
- * async-signal-safe. This function wrapper getdents64() in glibc is supported as of glibc 2.30.
- * To support earlier versions of glibc, we use syscall(SYS_getdents64), which requires defining
- * linux_dirent64 ourselves. This structure is very old and stable: It will not change unless the kernel
- * chooses to break compatibility with all existing binaries. Highly Unlikely.
-*/
-struct linux_dirent64 {
- unsigned long long d_ino;
- long long d_off;
- unsigned short d_reclen; /* Length of this linux_dirent */
- unsigned char d_type;
- char d_name[256]; /* Filename (null-terminated) */
-};
-
-/** Returns the number of the process's threads that can receive signal sig_num.
- * Writes into tids the tids of these threads.
- * If it fails, returns 0.
-*/
-static size_t get_ready_to_signal_threads_tids(int sig_num, pid_t tids[TIDS_MAX_SIZE]) {
- /* Open /proc/<pid>/task file. */
- char path_buff[PATH_MAX];
- snprintf_async_signal_safe(path_buff, PATH_MAX, "/proc/%d/task", getpid());
-
- int dir;
- if (-1 == (dir = open(path_buff, O_RDONLY | O_DIRECTORY))) return 0;
-
- size_t tids_count = 0;
- pid_t calling_tid = syscall(SYS_gettid);
- int current_thread_index = -1;
- long nread;
- char buff[PATH_MAX] = {0};
-
- /* readdir() is not async-signal-safe (AS-safe).
- Hence, we read the file using SYS_getdents64, which is considered AS-sync*/
- while ((nread = syscall(SYS_getdents64, dir, buff, PATH_MAX))) {
- if (nread == -1) {
- close(dir);
- serverLogRawFromHandler(LL_WARNING, "get_ready_to_signal_threads_tids(): Failed to read the process's task directory");
- return 0;
- }
- /* Each thread is represented by a directory */
- for (long pos = 0; pos < nread;) {
- struct linux_dirent64 *entry = (struct linux_dirent64 *)(buff + pos);
- pos += entry->d_reclen;
- /* Skip irrelevant directories. */
- if (strcmp(entry->d_name, ".") == 0 || strcmp(entry->d_name, "..") == 0) continue;
-
- /* the thread's directory name is equivalent to its tid. */
- long tid;
- string2l(entry->d_name, strlen(entry->d_name), &tid);
-
- if(!is_thread_ready_to_signal(path_buff, entry->d_name, sig_num)) continue;
-
- if(tid == calling_tid) {
- current_thread_index = tids_count;
- }
-
- /* save the thread id */
- tids[tids_count++] = tid;
-
- /* Stop if we reached the maximum threads number. */
- if(tids_count == TIDS_MAX_SIZE) {
- serverLogRawFromHandler(LL_WARNING, "get_ready_to_signal_threads_tids(): Reached the limit of the tids buffer.");
- break;
- }
- }
-
- if(tids_count == TIDS_MAX_SIZE) break;
- }
-
- /* Swap the last tid with the the current thread id */
- if(current_thread_index != -1) {
- pid_t last_tid = tids[tids_count - 1];
-
- tids[tids_count - 1] = calling_tid;
- tids[current_thread_index] = last_tid;
- }
-
- close(dir);
-
- return tids_count;
-}
-#endif /* __linux__ */
-#endif /* HAVE_BACKTRACE */