diff --git a/ext/opcache/README b/ext/opcache/README
index d5513c5..78df179 100644
--- a/ext/opcache/README
+++ b/ext/opcache/README
@@ -228,3 +228,6 @@
 	processes have to map shared memory into the same address space. This
 	directive allows to manually fix the "Unable to reattach to base address"
 	errors.
+
+opcache.lockfile_path (default "/tmp")
+	Absolute path used to store shared lockfiles.
diff --git a/ext/opcache/ZendAccelerator.h b/ext/opcache/ZendAccelerator.h
index a13c15c..2c659b1 100644
--- a/ext/opcache/ZendAccelerator.h
+++ b/ext/opcache/ZendAccelerator.h
@@ -249,6 +249,7 @@
 	long           interned_strings_buffer;
 #endif
 	char          *restrict_api;
+	char          *lockfile_path;
 } zend_accel_directives;
 
 typedef struct _zend_accel_globals {
diff --git a/ext/opcache/zend_accelerator_module.c b/ext/opcache/zend_accelerator_module.c
index 5705ed7..430892c 100644
--- a/ext/opcache/zend_accelerator_module.c
+++ b/ext/opcache/zend_accelerator_module.c
@@ -288,6 +288,7 @@
 	STD_PHP_INI_BOOLEAN("opcache.enable_cli"             , "0"   , PHP_INI_SYSTEM, OnUpdateBool,              accel_directives.enable_cli,                zend_accel_globals, accel_globals)
 	STD_PHP_INI_ENTRY("opcache.error_log"                , ""    , PHP_INI_SYSTEM, OnUpdateString,	         accel_directives.error_log,                 zend_accel_globals, accel_globals)
 	STD_PHP_INI_ENTRY("opcache.restrict_api"             , ""    , PHP_INI_SYSTEM, OnUpdateString,	         accel_directives.restrict_api,              zend_accel_globals, accel_globals)
+	STD_PHP_INI_ENTRY("opcache.lockfile_path"             , "/tmp"    , PHP_INI_SYSTEM, OnUpdateString,           accel_directives.lockfile_path,              zend_accel_globals, accel_globals)
 
 #ifdef ZEND_WIN32
 	STD_PHP_INI_ENTRY("opcache.mmap_base", NULL, PHP_INI_SYSTEM,	OnUpdateString,	                             accel_directives.mmap_base,                 zend_accel_globals, accel_globals)
@@ -696,6 +697,7 @@
 	add_assoc_bool(directives,   "opcache.fast_shutdown",          ZCG(accel_directives).fast_shutdown);
 	add_assoc_bool(directives,   "opcache.enable_file_override",   ZCG(accel_directives).file_override_enabled);
 	add_assoc_long(directives, 	 "opcache.optimization_level",     ZCG(accel_directives).optimization_level);
+	add_assoc_string(directives, "opcache.lockfile_path",          STRING_NOT_NULL(ZCG(accel_directives).lockfile_path), 1);
 
 	add_assoc_zval(return_value, "directives", directives);
 
diff --git a/ext/opcache/zend_shared_alloc.c b/ext/opcache/zend_shared_alloc.c
index cde8114..66c901c 100644
--- a/ext/opcache/zend_shared_alloc.c
+++ b/ext/opcache/zend_shared_alloc.c
@@ -38,7 +38,6 @@
 # include "sys/mman.h"
 #endif
 
-#define TMP_DIR "/tmp"
 #define SEM_FILENAME_PREFIX ".ZendSem."
 #define S_H(s) g_shared_alloc_handler->s
 
@@ -56,7 +55,7 @@
 static MUTEX_T zts_lock;
 #endif
 int lock_file;
-static char lockfile_name[sizeof(TMP_DIR) + sizeof(SEM_FILENAME_PREFIX) + 8];
+static char lockfile_name[MAXPATHLEN];
 #endif
 
 static const zend_shared_memory_handler_entry handler_table[] = {
@@ -76,7 +75,7 @@
 };
 
 #ifndef ZEND_WIN32
-void zend_shared_alloc_create_lock(void)
+void zend_shared_alloc_create_lock(char *lockfile_path)
 {
 	int val;
 
@@ -84,7 +83,7 @@
     zts_lock = tsrm_mutex_alloc();
 #endif
 
-	sprintf(lockfile_name, "%s/%sXXXXXX", TMP_DIR, SEM_FILENAME_PREFIX);
+	snprintf(lockfile_name, sizeof(lockfile_name), "%s/%sXXXXXX", lockfile_path, SEM_FILENAME_PREFIX);
 	lock_file = mkstemp(lockfile_name);
 	fchmod(lock_file, 0666);
 
@@ -165,7 +164,11 @@
 	smm_shared_globals = &tmp_shared_globals;
 	ZSMMG(shared_free) = requested_size; /* goes to tmp_shared_globals.shared_free */
 
+#ifndef ZEND_WIN32
+	zend_shared_alloc_create_lock(ZCG(accel_directives).lockfile_path);
+#else
 	zend_shared_alloc_create_lock();
+#endif
 
 	if (ZCG(accel_directives).memory_model && ZCG(accel_directives).memory_model[0]) {
 		char *model = ZCG(accel_directives).memory_model;