* cygheap.cc (cygheap_root::set): Avoid treating '/' specially.

* fhandler.cc (fhandler_base::fcntl): Only set specific O_NDELAY style flag
passed in from application.
* fhandler_socket.cc (fhandler_socket::fcntl): Ditto.
* fhandler.h: Set constant for future use.
* winsup.h: Define OLD_O_NDELAY only for old programs.
* include/cygwin/version.h: Define CYGWIN_VERSION_CHECK_FOR_OLD_O_NONBLOCK.

winsup/cygwin/ChangeLog

@@ -1,3 +1,15 @@
+Mon Aug  6 19:58:43 2001  Christopher Faylor <cgf@cygnus.com>
+
+	* cygheap.cc (cygheap_root::set): Avoid treating '/' specially.
+
+	* fhandler.cc (fhandler_base::fcntl): Only set specific O_NDELAY style
+	flag passed in from application.
+	* fhandler_socket.cc (fhandler_socket::fcntl): Ditto.
+	* fhandler.h: Set constant for future use.
+	* winsup.h: Define OLD_O_NDELAY only for old programs.
+	* include/cygwin/version.h: Define
+	CYGWIN_VERSION_CHECK_FOR_OLD_O_NONBLOCK.
+
 Sat Aug  4 16:52:03 2001  Christopher Faylor <cgf@cygnus.com>
 
 	Throughout, change check for running under Windows NT to 'iswinnt'.

winsup/cygwin/cygheap.cc

@@ -330,6 +330,15 @@ cstrdup1 (const char *s)
 void
 cygheap_root::set (const char *posix, const char *native)
 {
+  if (*posix == '/' && posix[1] == '\0')
+    {
+      if (m)
+	{
+	  cfree (m);
+	  m = NULL;
+	}
+      return;
+    }
   if (!m)
     m = (struct cygheap_root_mount_info *) ccalloc (HEAP_MOUNT, 1, sizeof (*m));
   strcpy (m->posix_path, posix);

winsup/cygwin/fhandler.cc

@@ -18,6 +18,7 @@ details. */
 #include "cygerrno.h"
 #include "perprocess.h"
 #include "security.h"
+#include "cygwin/version.h"
 #include "fhandler.h"
 #include "dtable.h"
 #include "cygheap.h"
@@ -1084,15 +1085,13 @@ int fhandler_base::fcntl (int cmd, void *arg)
 	 * ignored as well.
 	 */
         const int allowed_flags = O_APPEND | O_NONBLOCK | OLD_O_NDELAY;
-
+	int new_flags = (int) arg & allowed_flags;
-        /* Care for the old O_NDELAY flag. If one of the flags is set,
+        /* Carefully test for the O_NONBLOCK or deprecated OLD_O_NDELAY flag.
-           both flags are set. */
+	   Set only the flag that has been passed in.  If both are set, just
-	int new_flags = (int) arg;
+	   record O_NONBLOCK.   */
-        if (new_flags & (O_NONBLOCK | OLD_O_NDELAY))
+	if ((new_flags & OLD_O_NDELAY) && (new_flags & O_NONBLOCK))
-          new_flags |= O_NONBLOCK | OLD_O_NDELAY;
+	  new_flags = O_NONBLOCK;
-
+	set_flags ((get_flags () & ~allowed_flags) | new_flags);
-        int flags = get_flags () & ~allowed_flags;
-        set_flags (flags | (new_flags & allowed_flags));
       }
       res = 0;
       break;

winsup/cygwin/fhandler.h

@@ -57,7 +57,7 @@ enum
   FH_WBINSET	= 0x00010000,	/* binary write mode has been explicitly set */
   FH_APPEND	= 0x00020000,	/* always append */
   FH_ASYNC	= 0x00040000,	/* async I/O */
-  FH_HADEOF	= 0x00080000,	/* EOF seen */
+  FH_SIGCLOSE	= 0x00080000,	/* signal handler should close fd on interrupt */
 
   FH_SYMLINK	= 0x00100000,	/* is a symlink */
   FH_EXECABL	= 0x00200000,	/* file looked like it would run:

winsup/cygwin/fhandler_socket.cc

@@ -24,6 +24,8 @@
 #include <winsock2.h>
 #include "cygerrno.h"
 #include "security.h"
+#include "cygwin/version.h"
+#include "perprocess.h"
 #include "fhandler.h"
 #include "dtable.h"
 #include "cygheap.h"
@@ -412,17 +414,18 @@ fhandler_socket::fcntl (int cmd, void *arg)
       {
         /* Care for the old O_NDELAY flag. If one of the flags is set,
            both flags are set. */
-        int new_flags = (int) arg;
+        const int allowed_flags = O_NONBLOCK | OLD_O_NDELAY;
-        if (new_flags & (O_NONBLOCK | OLD_O_NDELAY))
+
-          new_flags |= O_NONBLOCK | OLD_O_NDELAY;
+        /* Carefully test for the O_NONBLOCK or deprecated OLD_O_NDELAY flag.
-        request = (new_flags & O_NONBLOCK) ? 1 : 0;
+	   Set only the flag that has been passed in.  If both are set, just
-        current = (get_flags () & O_NONBLOCK) ? 1 : 0;
+	   record O_NONBLOCK.   */
-        if (request != current && (res = ioctl (FIONBIO, &request)))
+	int new_flags = (int) arg & allowed_flags;
+	if ((new_flags & OLD_O_NDELAY) && (new_flags & O_NONBLOCK))
+	  new_flags = O_NONBLOCK;
+        current = get_flags () & allowed_flags;
+        if (!!current != !!new_flags && (res = ioctl (FIONBIO, &request)))
           break;
-        if (request)
+	set_flags ((get_flags () & ~allowed_flags) | new_flags);
-          set_flags (get_flags () | O_NONBLOCK | OLD_O_NDELAY);
-        else
-          set_flags (get_flags () & ~(O_NONBLOCK | OLD_O_NDELAY));
         break;
       }
     default:

winsup/cygwin/include/cygwin/version.h

@@ -82,6 +82,10 @@ details. */
 #define CYGWIN_VERSION_CHECK_FOR_S_IEXEC \
   (CYGWIN_VERSION_DLL_MAKE_COMBINED (user_data->api_major, user_data->api_minor) >= \
   36)
+
+#define CYGWIN_VERSION_CHECK_FOR_OLD_O_NONBLOCK \
+  (CYGWIN_VERSION_DLL_MAKE_COMBINED (user_data->api_major, user_data->api_minor) <= \
+  28)
      /* We used to use the DLL major/minor to track
 	non-backward-compatible interface changes to the API.  Now we
 	use an API major/minor number for this purpose. */

winsup/cygwin/net.cc

@@ -904,9 +904,9 @@ cygwin_accept (int fd, struct sockaddr *peer, int *len)
       struct sockaddr_in peer_dummy;
       int len_dummy;
       if (!peer)
-        peer = (struct sockaddr *) &peer_dummy;
+	peer = (struct sockaddr *) &peer_dummy;
       if (!len)
-        {
+	{
 	  len_dummy = sizeof (struct sockaddr_in);
 	  len = &len_dummy;
 	}

winsup/cygwin/pipe.cc

@@ -1,6 +1,6 @@
 /* pipe.cc: pipe for Cygwin.
 
-   Copyright 1996, 1998, 1999, 2000 Cygnus Solutions.
+   Copyright 1996, 1998, 1999, 2000, 2001 Cygnus Solutions.
 
 This file is part of Cygwin.
 
@@ -22,7 +22,7 @@ details. */
 static int
 make_pipe (int fildes[2], unsigned int psize, int mode)
 {
-  SetResourceLock(LOCK_FD_LIST,WRITE_LOCK|READ_LOCK," make_pipe");
+  SetResourceLock (LOCK_FD_LIST, WRITE_LOCK | READ_LOCK, "make_pipe");
 
   HANDLE r, w;
   int  fdr = -1, fdw = -1;
@@ -37,8 +37,8 @@ make_pipe (int fildes[2], unsigned int psize, int mode)
     __seterrno ();
   else
     {
-      fhandler_base *fhr = cygheap->fdtab.build_fhandler (fdr, FH_PIPER, "/dev/piper");
+      fhandler_pipe *fhr = (fhandler_pipe *) cygheap->fdtab.build_fhandler (fdr, FH_PIPER, "/dev/piper");
-      fhandler_base *fhw = cygheap->fdtab.build_fhandler (fdw, FH_PIPEW, "/dev/pipew");
+      fhandler_pipe *fhw = (fhandler_pipe *) cygheap->fdtab.build_fhandler (fdw, FH_PIPEW, "/dev/pipew");
 
       int binmode = mode & O_TEXT ? 0 : 1;
       fhr->init (r, GENERIC_READ, binmode);
@@ -56,7 +56,7 @@ make_pipe (int fildes[2], unsigned int psize, int mode)
     }
 
   syscall_printf ("%d = make_pipe ([%d, %d], %d, %p)", res, fdr, fdw, psize, mode);
-  ReleaseResourceLock(LOCK_FD_LIST,WRITE_LOCK|READ_LOCK," make_pipe");
+  ReleaseResourceLock(LOCK_FD_LIST, WRITE_LOCK | READ_LOCK, "make_pipe");
   return res;
 }
 
@@ -81,11 +81,11 @@ int
 dup (int fd)
 {
   int res;
-  SetResourceLock(LOCK_FD_LIST,WRITE_LOCK|READ_LOCK," dup");
+  SetResourceLock (LOCK_FD_LIST, WRITE_LOCK | READ_LOCK, "dup");
 
   res = dup2 (fd, cygheap->fdtab.find_unused_handle ());
 
-  ReleaseResourceLock(LOCK_FD_LIST,WRITE_LOCK|READ_LOCK," dup");
+  ReleaseResourceLock(LOCK_FD_LIST, WRITE_LOCK | READ_LOCK, "dup");
 
   return res;
 }

winsup/cygwin/winsup.h

@@ -250,7 +250,7 @@ extern SYSTEM_INFO system_info;
 /* newlib used to define O_NDELAY differently from O_NONBLOCK.  Now it
    properly defines both to be the same.  Unfortunately, we have to
    behave properly the old version, too, to accomodate older executables. */
-#define OLD_O_NDELAY	4
+#define OLD_O_NDELAY	(CYGWIN_VERSION_CHECK_FOR_OLD_O_NONBLOCK ? 4 : 0)
 
 /* The title on program start. */
 extern char *old_title;