зеркало из https://github.com/mozilla/pjs.git
SSL_ShutdownServerSessionIDCache no longer leaks the cache memory.
Bug 222065. r=wchang0222
This commit is contained in:
nelsonb%netscape.com
Родитель
2584fa08fb
Коммит
f8af4da928
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@ -32,7 +32,7 @@
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* may use your version of this file under either the MPL or the
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* GPL.
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*
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* $Id: sslsnce.c,v 1.25 2003-03-27 03:07:47 nelsonb%netscape.com Exp $
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* $Id: sslsnce.c,v 1.26 2003-10-19 01:25:10 nelsonb%netscape.com Exp $
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*/
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/* Note: ssl_FreeSID() in sslnonce.c gets used for both client and server
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@ -64,7 +64,7 @@
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* sidCacheEntry sidCacheData[ numSIDCacheEntries];
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* certCacheEntry certCacheData[numCertCacheEntries];
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* SSLWrappedSymWrappingKey keyCacheData[kt_kea_size][SSL_NUM_WRAP_MECHS];
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* } sharedMemCacheData;
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* } cacheMemCacheData;
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*/
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#include "nssrenam.h"
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#include "seccomon.h"
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@ -183,7 +183,7 @@ typedef struct sidCacheSetStr sidCacheSet;
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struct cacheDescStr {
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PRUint32 sharedMemSize;
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PRUint32 cacheMemSize;
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PRUint32 numSIDCacheLocks;
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PRUint32 numSIDCacheSets;
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@ -201,9 +201,12 @@ struct cacheDescStr {
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PRUint32 ssl2Timeout;
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PRUint32 ssl3Timeout;
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PRUint32 numSIDCacheLocksInitialized;
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/* These values are volatile, and are accessed through sharedCache-> */
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PRUint32 nextCertCacheEntry; /* certCacheLock protects */
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PRBool stopPolling;
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PRBool everInherited;
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/* The private copies of these values are pointers into shared mem */
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/* The copies of these values in shared memory are merely offsets */
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@ -216,11 +219,11 @@ struct cacheDescStr {
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SSLWrappedSymWrappingKey * keyCacheData;
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/* Only the private copies of these pointers are valid */
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char * sharedMem;
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char * cacheMem;
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struct cacheDescStr * sharedCache; /* shared copy of this struct */
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PRFileMap * cacheMemMap;
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PRThread * poller;
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PRBool shared;
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PRBool shared;
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};
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typedef struct cacheDescStr cacheDesc;
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@ -263,15 +266,14 @@ static sslPID myPid;
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static PRUint32 ssl_max_sid_cache_locks = MAX_SID_CACHE_LOCKS;
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/* forward static function declarations */
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static PRUint32 SIDindex(cacheDesc *cache, const PRIPv6Addr *addr, PRUint8 *s, unsigned nl);
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static PRUint32 SIDindex(cacheDesc *cache, const PRIPv6Addr *addr, PRUint8 *s,
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unsigned nl);
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static SECStatus LaunchLockPoller(cacheDesc *cache);
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struct inheritanceStr {
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PRUint32 sharedMemSize;
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PRUint16 fmStrLen;
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PRUint32 cacheMemSize;
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PRUint32 fmStrLen;
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};
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typedef struct inheritanceStr inheritance;
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@ -881,24 +883,60 @@ long gettid(void)
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}
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#endif
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static void
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CloseCache(cacheDesc *cache)
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{
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int locks_initialized = cache->numSIDCacheLocksInitialized;
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if (cache->cacheMem) {
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/* If everInherited is true, this shared cache was (and may still
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** be) in use by multiple processes. We do not wish to destroy
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** the mutexes while they are still in use.
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*/
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if (PR_FALSE == cache->sharedCache->everInherited) {
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sidCacheLock *pLock = cache->sidCacheLocks;
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for (; locks_initialized > 0; --locks_initialized, ++pLock ) {
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sslMutex_Destroy(&pLock->mutex);
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}
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}
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if (cache->shared) {
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PR_MemUnmap(cache->cacheMem, cache->cacheMemSize);
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} else {
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PORT_Free(cache->cacheMem);
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}
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cache->cacheMem = NULL;
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}
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if (cache->cacheMemMap) {
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PR_CloseFileMap(cache->cacheMemMap);
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cache->cacheMemMap = NULL;
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}
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memset(cache, 0, sizeof *cache);
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}
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static SECStatus
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InitCache(cacheDesc *cache, int maxCacheEntries, PRUint32 ssl2_timeout,
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PRUint32 ssl3_timeout, const char *directory, PRBool shared)
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{
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ptrdiff_t ptr;
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sidCacheLock *pLock;
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char * sharedMem;
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char * cacheMem;
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PRFileMap * cacheMemMap;
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char * cfn = NULL; /* cache file name */
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int locks_initialized = 0;
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int locks_to_initialize = 0;
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PRUint32 init_time;
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if (cache->sharedMem) {
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if (cache->cacheMem) {
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/* Already done */
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return SECSuccess;
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}
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/* make sure loser can clean up properly */
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cache->shared = shared;
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cache->cacheMem = cacheMem = NULL;
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cache->cacheMemMap = cacheMemMap = NULL;
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cache->sharedCache = (cacheDesc *)0;
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cache->numSIDCacheEntries = maxCacheEntries ? maxCacheEntries
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: DEF_SID_CACHE_ENTRIES;
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cache->numSIDCacheSets =
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@ -915,7 +953,7 @@ InitCache(cacheDesc *cache, int maxCacheEntries, PRUint32 ssl2_timeout,
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/* compute size of shared memory, and offsets of all pointers */
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ptr = 0;
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cache->sharedMem = (char *)ptr;
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cache->cacheMem = (char *)ptr;
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ptr += SID_ROUNDUP(sizeof(cacheDesc), SID_ALIGNMENT);
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cache->sidCacheLocks = (sidCacheLock *)ptr;
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@ -951,7 +989,7 @@ InitCache(cacheDesc *cache, int maxCacheEntries, PRUint32 ssl2_timeout,
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ptr = (ptrdiff_t)(cache->keyCacheData + cache->numKeyCacheEntries);
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ptr = SID_ROUNDUP(ptr, SID_ALIGNMENT);
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cache->sharedMemSize = ptr;
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cache->cacheMemSize = ptr;
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cache->keyCacheSize = (char *)ptr - (char *)cache->keyCacheData;
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@ -979,67 +1017,60 @@ InitCache(cacheDesc *cache, int maxCacheEntries, PRUint32 ssl2_timeout,
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cache->ssl3Timeout = DEF_SSL3_TIMEOUT;
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}
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/* Create file names */
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if (shared) {
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/* Create file names */
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#if defined(XP_UNIX) || defined(XP_BEOS)
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/* there's some confusion here about whether PR_OpenAnonFileMap wants
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** a directory name or a file name for its first argument.
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cfn = PR_smprintf("%s/.sslsvrcache.%d", directory, myPid);
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*/
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cfn = PR_smprintf("%s", directory);
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#endif
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#ifdef XP_WIN32
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cfn = PR_smprintf("%s/svrcache_%d_%x.ssl", directory, myPid,
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GetCurrentThreadId());
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/* there's some confusion here about whether PR_OpenAnonFileMap wants
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** a directory name or a file name for its first argument.
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cfn = PR_smprintf("%s/.sslsvrcache.%d", directory, myPid);
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*/
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cfn = PR_smprintf("%s", directory);
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#elif defined(XP_WIN32)
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cfn = PR_smprintf("%s/svrcache_%d_%x.ssl", directory, myPid,
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GetCurrentThreadId());
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#elif defined(XP_OS2)
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cfn = PR_smprintf("%s/svrcache_%d_%x.ssl", directory, myPid,
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gettid());
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#else
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#error "Don't know how to create file name for this platform!"
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#endif
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if (!cfn) {
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goto loser;
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}
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#ifdef XP_OS2
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cfn = PR_smprintf("%s/svrcache_%d_%x.ssl", directory, myPid,
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gettid());
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#endif
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if (!cfn) {
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goto loser;
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}
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/* Create cache */
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cacheMemMap = PR_OpenAnonFileMap(cfn, cache->cacheMemSize,
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PR_PROT_READWRITE);
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cache->shared = shared;
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/* Create cache */
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if (PR_TRUE == shared) {
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cacheMemMap = PR_OpenAnonFileMap(cfn, cache->sharedMemSize,
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PR_PROT_READWRITE);
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PR_smprintf_free(cfn);
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if(!cacheMemMap) {
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goto loser;
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}
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cacheMem = PR_MemMap(cacheMemMap, 0, cache->cacheMemSize);
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} else {
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cacheMemMap = NULL;
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}
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PR_smprintf_free(cfn);
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if( (PR_TRUE == shared) && (!cacheMemMap) ) {
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goto loser;
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}
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if (PR_TRUE == shared) {
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sharedMem = PR_MemMap(cacheMemMap, 0, cache->sharedMemSize);
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} else {
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sharedMem = PORT_Alloc(cache->sharedMemSize);
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cacheMem = PORT_Alloc(cache->cacheMemSize);
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}
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if (! sharedMem) {
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if (! cacheMem) {
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goto loser;
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}
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/* Initialize shared memory. This may not be necessary on all platforms */
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memset(sharedMem, 0, cache->sharedMemSize);
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memset(cacheMem, 0, cache->cacheMemSize);
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/* Copy cache descriptor header into shared memory */
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memcpy(sharedMem, cache, sizeof *cache);
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memcpy(cacheMem, cache, sizeof *cache);
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/* save private copies of these values */
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cache->cacheMemMap = cacheMemMap;
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cache->sharedMem = sharedMem;
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cache->sharedCache = (cacheDesc *)sharedMem;
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cache->cacheMem = cacheMem;
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cache->sharedCache = (cacheDesc *)cacheMem;
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/* Fix pointers in our private copy of cache descriptor to point to
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** spaces in shared memory
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*/
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ptr = (ptrdiff_t)cache->sharedMem;
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ptr = (ptrdiff_t)cache->cacheMem;
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*(ptrdiff_t *)(&cache->sidCacheLocks) += ptr;
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*(ptrdiff_t *)(&cache->keyCacheLock ) += ptr;
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*(ptrdiff_t *)(&cache->certCacheLock) += ptr;
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@ -1055,36 +1086,20 @@ InitCache(cacheDesc *cache, int maxCacheEntries, PRUint32 ssl2_timeout,
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locks_initialized < locks_to_initialize;
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++locks_initialized, ++pLock ) {
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SECStatus err = sslMutex_Init(&pLock->mutex, isMultiProcess);
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if (err)
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SECStatus err = sslMutex_Init(&pLock->mutex, shared);
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if (err) {
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cache->numSIDCacheLocksInitialized = locks_initialized;
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goto loser;
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}
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pLock->timeStamp = init_time;
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pLock->pid = 0;
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}
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cache->numSIDCacheLocksInitialized = locks_initialized;
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return SECSuccess;
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loser:
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if (cache->cacheMemMap) {
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if (cache->sharedMem) {
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if (locks_initialized > 0) {
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pLock = cache->sidCacheLocks;
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for (; locks_initialized > 0; --locks_initialized, ++pLock ) {
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sslMutex_Destroy(&pLock->mutex);
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}
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}
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if (shared) {
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PR_MemUnmap(cache->sharedMem, cache->sharedMemSize);
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cache->sharedMem = NULL;
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}
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}
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if (shared) {
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PR_CloseFileMap(cache->cacheMemMap);
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} else {
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PORT_Free(sharedMem);
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}
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cache->cacheMemMap = NULL;
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}
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CloseCache(cache);
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return SECFailure;
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}
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|
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|
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@ -1161,9 +1176,7 @@ SSL_ConfigServerSessionIDCache( int maxCacheEntries,
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SECStatus
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SSL_ShutdownServerSessionIDCacheInstance(cacheDesc *cache)
|
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{
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/* if single process, close down, clean up.
|
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** if multi-process, TBD.
|
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*/
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CloseCache(cache);
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return SECSuccess;
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}
|
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|
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|
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@ -1195,7 +1208,7 @@ SSL_ConfigMPServerSIDCache( int maxCacheEntries,
|
|||
|
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isMultiProcess = PR_TRUE;
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result = SSL_ConfigServerSessionIDCacheInstance(cache, maxCacheEntries,
|
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ssl2_timeout, ssl3_timeout, directory, PR_TRUE);
|
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ssl2_timeout, ssl3_timeout, directory, PR_TRUE);
|
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if (result != SECSuccess)
|
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return result;
|
||||
|
||||
|
|
@ -1206,7 +1219,7 @@ SSL_ConfigMPServerSIDCache( int maxCacheEntries,
|
|||
return SECFailure;
|
||||
}
|
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|
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inherit.sharedMemSize = cache->sharedMemSize;
|
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inherit.cacheMemSize = cache->cacheMemSize;
|
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inherit.fmStrLen = fmStrLen;
|
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|
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inhValue = BTOA_DataToAscii((unsigned char *)&inherit, sizeof inherit);
|
||||
|
|
@ -1240,6 +1253,7 @@ SSL_InheritMPServerSIDCacheInstance(cacheDesc *cache, const char * envString)
|
|||
{
|
||||
unsigned char * decoString = NULL;
|
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char * fmString = NULL;
|
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char * myEnvString = NULL;
|
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unsigned int decoLen;
|
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ptrdiff_t ptr;
|
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inheritance inherit;
|
||||
|
|
@ -1256,9 +1270,12 @@ SSL_InheritMPServerSIDCacheInstance(cacheDesc *cache, const char * envString)
|
|||
** then isMultiProcess will already be set.
|
||||
** If not, we'll set it below.
|
||||
*/
|
||||
if (isMultiProcess)
|
||||
if (isMultiProcess) {
|
||||
if (cache && cache->sharedCache) {
|
||||
cache->sharedCache->everInherited = PR_TRUE;
|
||||
}
|
||||
return SECSuccess; /* already done. */
|
||||
|
||||
}
|
||||
ssl_sid_lookup = ServerSessionIDLookup;
|
||||
ssl_sid_cache = ServerSessionIDCache;
|
||||
ssl_sid_uncache = ServerSessionIDUncache;
|
||||
|
|
@ -1270,15 +1287,15 @@ SSL_InheritMPServerSIDCacheInstance(cacheDesc *cache, const char * envString)
|
|||
return SECFailure;
|
||||
}
|
||||
}
|
||||
envString = PORT_Strdup(envString);
|
||||
if (!envString)
|
||||
myEnvString = PORT_Strdup(envString);
|
||||
if (!myEnvString)
|
||||
return SECFailure;
|
||||
fmString = strchr(envString, ',');
|
||||
fmString = strchr(myEnvString, ',');
|
||||
if (!fmString)
|
||||
goto loser;
|
||||
*fmString++ = 0;
|
||||
|
||||
decoString = ATOB_AsciiToData(envString, &decoLen);
|
||||
decoString = ATOB_AsciiToData(myEnvString, &decoLen);
|
||||
if (!decoString) {
|
||||
SET_ERROR_CODE
|
||||
goto loser;
|
||||
|
|
@ -1294,34 +1311,39 @@ SSL_InheritMPServerSIDCacheInstance(cacheDesc *cache, const char * envString)
|
|||
goto loser;
|
||||
}
|
||||
|
||||
memset(&my, 0, sizeof my);
|
||||
my.sharedMemSize = inherit.sharedMemSize;
|
||||
memset(cache, 0, sizeof *cache);
|
||||
cache->cacheMemSize = inherit.cacheMemSize;
|
||||
|
||||
/* Create cache */
|
||||
my.cacheMemMap = PR_ImportFileMapFromString(fmString);
|
||||
if(! my.cacheMemMap) {
|
||||
cache->cacheMemMap = PR_ImportFileMapFromString(fmString);
|
||||
if(! cache->cacheMemMap) {
|
||||
goto loser;
|
||||
}
|
||||
my.sharedMem = PR_MemMap(my.cacheMemMap, 0, my.sharedMemSize);
|
||||
if (! my.sharedMem) {
|
||||
cache->cacheMem = PR_MemMap(cache->cacheMemMap, 0, cache->cacheMemSize);
|
||||
if (! cache->cacheMem) {
|
||||
goto loser;
|
||||
}
|
||||
my.sharedCache = (cacheDesc *)my.sharedMem;
|
||||
cache->sharedCache = (cacheDesc *)cache->cacheMem;
|
||||
|
||||
if (my.sharedCache->sharedMemSize != my.sharedMemSize) {
|
||||
if (cache->sharedCache->cacheMemSize != cache->cacheMemSize) {
|
||||
SET_ERROR_CODE
|
||||
goto loser;
|
||||
}
|
||||
|
||||
memcpy(cache, my.sharedCache, sizeof *cache);
|
||||
cache->cacheMemMap = my.cacheMemMap;
|
||||
cache->sharedMem = my.sharedMem;
|
||||
cache->sharedCache = my.sharedCache;
|
||||
/* We're now going to overwrite the local cache instance with the
|
||||
** shared copy of the cache struct, then update several values in
|
||||
** the local cache using the values for cache->cacheMemMap and
|
||||
** cache->cacheMem computed just above. So, we copy cache into
|
||||
** the automatic variable "my", to preserve the variables while
|
||||
** cache is overwritten.
|
||||
*/
|
||||
my = *cache; /* save values computed above. */
|
||||
memcpy(cache, cache->sharedCache, sizeof *cache); /* overwrite */
|
||||
|
||||
/* Fix pointers in our private copy of cache descriptor to point to
|
||||
** spaces in shared memory
|
||||
** spaces in shared memory, whose address is now in "my".
|
||||
*/
|
||||
ptr = (ptrdiff_t)cache->sharedMem;
|
||||
ptr = (ptrdiff_t)my.cacheMem;
|
||||
*(ptrdiff_t *)(&cache->sidCacheLocks) += ptr;
|
||||
*(ptrdiff_t *)(&cache->keyCacheLock ) += ptr;
|
||||
*(ptrdiff_t *)(&cache->certCacheLock) += ptr;
|
||||
|
|
@ -1330,49 +1352,66 @@ SSL_InheritMPServerSIDCacheInstance(cacheDesc *cache, const char * envString)
|
|||
*(ptrdiff_t *)(&cache->certCacheData) += ptr;
|
||||
*(ptrdiff_t *)(&cache->keyCacheData ) += ptr;
|
||||
|
||||
cache->cacheMemMap = my.cacheMemMap;
|
||||
cache->cacheMem = my.cacheMem;
|
||||
cache->sharedCache = (cacheDesc *)cache->cacheMem;
|
||||
|
||||
#ifdef WINNT
|
||||
/* On Windows NT we need to "fix" the sidCacheLocks here to support fibers
|
||||
When NT fibers are used in a multi-process server, a second level of
|
||||
locking is needed to prevent a deadlock, in case a fiber acquires the
|
||||
cross-process mutex, yields, and another fiber is later scheduled on
|
||||
the same native thread and tries to acquire the cross-process mutex.
|
||||
We do this by using a PRLock in the sslMutex. However, it is stored in
|
||||
shared memory as part of sidCacheLocks, and we don't want to overwrite
|
||||
the PRLock of the parent process. So we need to make new, private
|
||||
copies of sidCacheLocks before modifying the sslMutex with our own
|
||||
PRLock
|
||||
** When NT fibers are used in a multi-process server, a second level of
|
||||
** locking is needed to prevent a deadlock, in case a fiber acquires the
|
||||
** cross-process mutex, yields, and another fiber is later scheduled on
|
||||
** the same native thread and tries to acquire the cross-process mutex.
|
||||
** We do this by using a PRLock in the sslMutex. However, it is stored in
|
||||
** shared memory as part of sidCacheLocks, and we don't want to overwrite
|
||||
** the PRLock of the parent process. So we need to make new, private
|
||||
** copies of sidCacheLocks before modifying the sslMutex with our own
|
||||
** PRLock
|
||||
*/
|
||||
|
||||
newLocks = (sidCacheLock*)PORT_Alloc(sizeof(sidCacheLock)*(cache->numSIDCacheLocks + 2));
|
||||
/* note from jpierre : this should be free'd in child processes when
|
||||
a function is added to delete the SSL session cache in the future */
|
||||
/* fix the locks */
|
||||
for (locks_to_initialize = cache->numSIDCacheLocks + 2;
|
||||
locks_initialized < locks_to_initialize;
|
||||
++locks_initialized) {
|
||||
/* copy the old lock */
|
||||
memcpy(&newLocks[locks_initialized], &cache->sidCacheLocks[locks_initialized], sizeof(sidCacheLock));
|
||||
/* now, make a local PRLock in this sslMutex for this child process */
|
||||
sslMutex_2LevelInit(&newLocks[locks_initialized].mutex);
|
||||
}
|
||||
|
||||
/* then, make our cache object point to our new private sidCacheLocks */
|
||||
/* first the session cache */
|
||||
** a function is added to delete the SSL session cache in the future.
|
||||
*/
|
||||
locks_to_initialize = cache->numSIDCacheLocks + 2;
|
||||
newLocks = PORT_NewArray(sidCacheLock, locks_to_initialize);
|
||||
cache->sidCacheLocks = newLocks;
|
||||
if (!newLocks)
|
||||
goto loser;
|
||||
/* copy the old locks */
|
||||
memcpy(newLocks, cache->sidCacheLocks,
|
||||
locks_to_initialize * sizeof(sidCacheLock));
|
||||
/* fix the locks */
|
||||
for (; locks_initialized < locks_to_initialize; ++locks_initialized) {
|
||||
/* now, make a local PRLock in this sslMutex for this child process */
|
||||
SECStatus err;
|
||||
err = sslMutex_2LevelInit(&newLocks[locks_initialized].mutex);
|
||||
if (err != SECSuccess) {
|
||||
cache->numSIDCacheLocksInitialized = locks_initialized;
|
||||
goto loser;
|
||||
}
|
||||
}
|
||||
cache->numSIDCacheLocksInitialized = locks_initialized;
|
||||
|
||||
/* also fix the key and cert cache which use the last 2 lock entries */
|
||||
cache->keyCacheLock = cache->sidCacheLocks + cache->numSIDCacheLocks;
|
||||
cache->certCacheLock = cache->keyCacheLock + 1;
|
||||
#endif
|
||||
|
||||
PORT_Free(myEnvString);
|
||||
PORT_Free(decoString);
|
||||
|
||||
/* mark that we have inherited this. */
|
||||
cache->sharedCache->everInherited = PR_TRUE;
|
||||
isMultiProcess = PR_TRUE;
|
||||
|
||||
return SECSuccess;
|
||||
|
||||
loser:
|
||||
PORT_Free(myEnvString);
|
||||
if (decoString)
|
||||
PORT_Free(decoString);
|
||||
CloseCache(cache);
|
||||
return SECFailure;
|
||||
|
||||
}
|
||||
|
||||
SECStatus
|
||||
|
|
|
|||
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