ext/posix: adding POSIX_SC_OPEN_MAX constant.

returns the number of file descriptors that a process can handle.
e.g. useful after pcntl_fork() to close all the file descriptors up
to that boundary.

Author: devnexen

ext/posix/posix.stub.php

@@ -303,6 +303,13 @@
  */
 const POSIX_PC_SYMLINK_MAX = UNKNOWN;
 #endif
+#ifdef _SC_OPEN_MAX
+/**
+ * @var int
+ * @cvalue _SC_OPEN_MAX
+ */
+const POSIX_SC_OPEN_MAX = UNKNOWN;
+#endif
 
 function posix_kill(int $process_id, int $signal): bool {}
 

ext/posix/posix_arginfo.h

@@ -7,6 +7,7 @@ posix
 var_dump(posix_sysconf(-1));
 var_dump(posix_errno() != 0);
 var_dump(posix_sysconf(POSIX_SC_NPROCESSORS_ONLN));
+var_dump(posix_sysconf(POSIX_SC_OPEN_MAX) >= 256);
 ?>
 --EXPECTF--
 int(-1)