Fixes error due to having the sys/resource.h file and not having the …

…`getrlimit` function.

CMakeLists.txt

@@ -224,6 +224,7 @@ if(NOT HAVE_STDINT_H)
   message(FATAL_ERROR "Could NOT find required header stdint.h")
 endif()
 
+check_function_exists(getrlimit       LIBVNCSERVER_HAVE_GETRLIMIT)
 check_function_exists(gettimeofday    LIBVNCSERVER_HAVE_GETTIMEOFDAY)
 check_function_exists(vfork           LIBVNCSERVER_HAVE_VFORK)
 check_function_exists(vprintf         LIBVNCSERVER_HAVE_VPRINTF)

include/rfb/rfbconfig.h.cmakein

@@ -108,6 +108,9 @@
 /* Define to 1 if you have <sys/resource.h> */
 #cmakedefine LIBVNCSERVER_HAVE_SYS_RESOURCE_H  1
 
+/* Define to 1 if you have the `getrlimit' function. */
+#cmakedefine LIBVNCSERVER_HAVE_GETRLIMIT  1
+
 /* Define to 1 if you have the <unistd.h> header file. */
 #cmakedefine LIBVNCSERVER_HAVE_UNISTD_H  1 
 

src/libvncserver/sockets.c

@@ -600,7 +600,7 @@ rfbProcessNewConnection(rfbScreenInfoPtr rfbScreen)
     rfbSocket sock = RFB_INVALID_SOCKET;
     fd_set listen_fds; 
     rfbSocket chosen_listen_sock = RFB_INVALID_SOCKET;
-#if defined LIBVNCSERVER_HAVE_SYS_RESOURCE_H && defined LIBVNCSERVER_HAVE_FCNTL_H
+#if defined LIBVNCSERVER_HAVE_GETRLIMIT && defined LIBVNCSERVER_HAVE_FCNTL_H
     struct rlimit rlim;
     size_t maxfds, curfds, i;
 #endif
@@ -629,7 +629,7 @@ rfbProcessNewConnection(rfbScreenInfoPtr rfbScreen)
       Our approach is to deny new clients when we have reached a certain fraction of the per-process limit of file descriptors.
       TODO: add Windows support.
      */
-#if defined LIBVNCSERVER_HAVE_SYS_RESOURCE_H && defined LIBVNCSERVER_HAVE_FCNTL_H
+#if defined LIBVNCSERVER_HAVE_GETRLIMIT && defined LIBVNCSERVER_HAVE_FCNTL_H
     if(getrlimit(RLIMIT_NOFILE, &rlim) < 0)
 	maxfds = 100;  /* use a sane default if getting the limit fails */
     else