1 files changed, 47 insertions, 0 deletions
diff --git a/Build/extra/djgpp/pathconf.c b/Build/extra/djgpp/pathconf.c
new file mode 100644
index 00000000000..71483684e04
--- /dev/null
+++ b/Build/extra/djgpp/pathconf.c
@@ -0,0 +1,47 @@
+/* Copyright (C) 1997 DJ Delorie, see COPYING.DJ for details */
+/* Copyright (C) 1995 DJ Delorie, see COPYING.DJ for details */
+#include <errno.h>
+#include <stdlib.h>
+#include <ctype.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <limits.h>
+
+#define TOLOWER(c) (isascii(c) && isupper(c) ? tolower (c) : (c))
+
+long
+pathconf(const char *path, int name)
+{
+  switch (name)
+  {
+  case _PC_LINK_MAX:		return LINK_MAX;
+  case _PC_MAX_CANON:		return MAX_CANON;
+  case _PC_MAX_INPUT:		return MAX_INPUT;
+  case _PC_NAME_MAX: case _PC_PATH_MAX:
+    {
+      int name_max, path_max;
+      int e = errno;
+      char *lfnenv = getenv ("LFN");
+
+      if (!lfnenv || TOLOWER (*lfnenv) != 'n')
+	{
+	  errno = 0;
+	  _get_volume_info (path, &name_max, &path_max, 0);
+	  if (!errno)
+	    {
+	      errno = e;
+	      return (name == _PC_NAME_MAX) ? name_max : path_max;
+	    }
+	}
+      return (name == _PC_NAME_MAX) ? NAME_MAX : PATH_MAX;
+    }
+  case _PC_PIPE_BUF:		return PIPE_BUF;
+  case _PC_CHOWN_RESTRICTED:	return _POSIX_CHOWN_RESTRICTED;
+  case _PC_NO_TRUNC:		return _POSIX_NO_TRUNC;
+  case _PC_VDISABLE:		return _POSIX_VDISABLE;
+
+  default:
+    errno = EINVAL;
+    return -1;
+  }
+}