* cygwin.din: Export _getmode and getmode to allow querying of binary state of

an fd.
* external.cc (cygwin_internal): Add handling of perfile_table setting.
* fhandler.cc (perfile_table): New global.
(fhandler_base::get_default_fmode): New method to return a file's default mode
based on its name.
(fhandler_base::open): Use get_default_mode method to determine a file's mode.
Record file mode in file flags.
* fhandler.h (fhandler_base): Declare get_default_fmode
* syscalls.cc (getmode): New function.
* sys/cygwin.h (__cygwin_perfile): New structure.
(cygwin_getinfo_types): Move outside of WINVER conditional.
(per_process): Move inside of WINVER conditional.

1 files changed, 13 insertions, 2 deletions

diff --git a/winsup/cygwin/syscalls.cc b/winsup/cygwin/syscalls.cc
index b0251bffc..9594a4931 100644
--- a/winsup/cygwin/syscalls.cc
+++ b/winsup/cygwin/syscalls.cc
@@ -1494,11 +1494,22 @@ setmode_helper (FILE *f)
   return 0;
 }
 
+extern "C" int
+getmode (int fd)
+{
+  if (dtable.not_open (fd))
+    {
+      set_errno (EBADF);
+      return -1;
+    }
+
+  return dtable[fd]->get_flags () & (O_BINARY | O_TEXT);
+}
+
 /* Set a file descriptor into text or binary mode, returning the
    previous mode.  */
 
-extern "C"
-int
+extern "C" int
 setmode (int fd, int mode)
 {
   if (dtable.not_open (fd))