6944822: Fix for 6938627 exposes problem with hard-coded buffer sizes

Summary: Make tmpdir buffer sizes MAX_PATH+1
Reviewed-by: dholmes, coleenp
Contributed-by: andreas.kohn@fredhopper.com

src/os/linux/vm/attachListener_linux.cpp

@@ -461,7 +461,7 @@ bool AttachListener::is_init_trigger() {
   if (init_at_startup() || is_initialized()) {
     return false;               // initialized at startup or already initialized
   }
-  char fn[128];
+  char fn[PATH_MAX+1];
   sprintf(fn, ".attach_pid%d", os::current_process_id());
   int ret;
   struct stat64 st;

src/os/linux/vm/os_linux.cpp

@@ -2305,7 +2305,7 @@ void linux_wrap_code(char* base, size_t size) {
     return;
   }
 
-  char buf[40];
+  char buf[PATH_MAX+1];
   int num = Atomic::add(1, &cnt);
 
   snprintf(buf, sizeof(buf), "%s/hs-vm-%d-%d",

src/os/solaris/vm/attachListener_solaris.cpp

@@ -592,7 +592,7 @@ bool AttachListener::is_init_trigger() {
   if (init_at_startup() || is_initialized()) {
     return false;               // initialized at startup or already initialized
   }
-  char fn[128];
+  char fn[PATH_MAX+1];
   sprintf(fn, ".attach_pid%d", os::current_process_id());
   int ret;
   struct stat64 st;