* fhandler.h (fhandler_termios::line_edit): Change return from an int to an

enum to allow the function to return an error.
* fhandler_console.cc (fhandler_console::read): Update the line_edit call to
use the new enum.
* fhandler_termios.cc (fhandler_termios::line_edit): Change return from an int
to an enum to allow the function to return an error.  Put put_readahead call
before doecho for future patch.
* fhandler_tty.cc (fhandler_pty_master::write): Change to call line_edit one
character at a time, and stop if an error occurs.

5 files changed, 40 insertions, 12 deletions

diff --git a/winsup/cygwin/ChangeLog b/winsup/cygwin/ChangeLog
index 8b5b145..b09b90d 100644
--- a/winsup/cygwin/ChangeLog
+++ b/winsup/cygwin/ChangeLog
@@ -1,3 +1,15 @@
+2002-12-04  Steve Osborn  <bub@io.com>
+
+	* fhandler.h (fhandler_termios::line_edit): Change return from an int
+	to an enum to allow the function to return an error.
+	* fhandler_console.cc (fhandler_console::read): Update the line_edit
+	call to use the new enum.
+	* fhandler_termios.cc (fhandler_termios::line_edit): Change return from
+	an int to an enum to allow the function to return an error.  Put
+	put_readahead call before doecho for future patch.
+	* fhandler_tty.cc (fhandler_pty_master::write): Change to call
+	line_edit one character at a time, and stop if an error occurs.
+
 2002-12-04  Craig McGeachie  <slapdau@yahoo.com.au>
 
 	* netdb.cc: New file.
diff --git a/winsup/cygwin/fhandler.h b/winsup/cygwin/fhandler.h
index 0e42670..3dcc8b6 100644
--- a/winsup/cygwin/fhandler.h
+++ b/winsup/cygwin/fhandler.h
@@ -118,6 +118,14 @@ typedef struct __DIR DIR;
 struct dirent;
 struct iovec;
 
+enum line_edit_status
+{
+  line_edit_signalled = -1,
+  line_edit_ok = 0,
+  line_edit_input_done = 1,
+  line_edit_error = 2
+};
+
 enum bg_check_types
 {
   bg_error = -1,
@@ -693,7 +701,7 @@ class fhandler_termios: public fhandler_base
     set_need_fork_fixup ();
   }
   HANDLE& get_output_handle () { return output_handle; }
-  int line_edit (const char *rptr, int nread, int always_accept = 0);
+  line_edit_status line_edit (const char *rptr, int nread, int always_accept = 0);
   void set_output_handle (HANDLE h) { output_handle = h; }
   void tcinit (tty_min *this_tc, int force = FALSE);
   virtual int is_tty () { return 1; }
diff --git a/winsup/cygwin/fhandler_console.cc b/winsup/cygwin/fhandler_console.cc
index 70e7199..a7b13c6 100644
--- a/winsup/cygwin/fhandler_console.cc
+++ b/winsup/cygwin/fhandler_console.cc
@@ -457,10 +457,10 @@ fhandler_console::read (void *pv, size_t buflen)
 
       if (toadd)
 	{
-	  int res = line_edit (toadd, nread);
-	  if (res < 0)
+	  line_edit_status res = line_edit (toadd, nread);
+	  if (res == line_edit_signalled)
 	    goto sig_exit;
-	  else if (res)
+	  else if (res == line_edit_input_done)
 	    break;
 	}
 #undef ich
diff --git a/winsup/cygwin/fhandler_termios.cc b/winsup/cygwin/fhandler_termios.cc
index cfdb157..6fa5cf9 100644
--- a/winsup/cygwin/fhandler_termios.cc
+++ b/winsup/cygwin/fhandler_termios.cc
@@ -186,9 +186,10 @@ fhandler_termios::echo_erase (int force)
     doecho ("\b \b", 3);
 }
 
-int
+line_edit_status
 fhandler_termios::line_edit (const char *rptr, int nread, int always_accept)
 {
+  line_edit_status ret = line_edit_ok;
   char c;
   int input_done = 0;
   bool sawsig = FALSE;
@@ -321,20 +322,23 @@ fhandler_termios::line_edit (const char *rptr, int nread, int always_accept)
       if (tc->ti.c_iflag & IUCLC && isupper (c))
 	c = cyg_tolower (c);
 
+      put_readahead (c);
       if (tc->ti.c_lflag & ECHO)
 	doecho (&c, 1);
-      put_readahead (c);
     }
 
   if (!iscanon || always_accept)
     set_input_done (ralen > 0);
 
   if (sawsig)
-    input_done = -1;
+    ret = line_edit_signalled;
   else if (input_done)
-    (void) accept_input ();
+    {
+      ret = line_edit_input_done;
+      (void) accept_input ();
+    }
 
-  return input_done;
+  return ret;
 }
 
 void
diff --git a/winsup/cygwin/fhandler_tty.cc b/winsup/cygwin/fhandler_tty.cc
index dc0f0fc..3b47f56 100644
--- a/winsup/cygwin/fhandler_tty.cc
+++ b/winsup/cygwin/fhandler_tty.cc
@@ -167,7 +167,7 @@ fhandler_pty_master::accept_input ()
 	      get_ttyp ()->read_retval = -1;
 	      break;
 	    }
-	  else 
+	  else
 	    get_ttyp ()->read_retval = 1;
 
 	  p += written;
@@ -1077,8 +1077,12 @@ fhandler_pty_master::close ()
 int
 fhandler_pty_master::write (const void *ptr, size_t len)
 {
-  (void) line_edit ((char *) ptr, len);
-  return len;
+  size_t i;
+  char *p = (char *) ptr;
+  for (i=0; i<len; i++)
+    if (line_edit (p++, 1) == line_edit_error)
+      break;
+  return i;
 }
 
 int __stdcall