Ticket #305: o_nonblock.diff

src/emx/src/lib/sys/filehandles.c

@@ -1204 +1204 @@
             if (!_fmode_bin)
                 fLibc |= O_TEXT;
 
+            /*
+             * Blocking flag for a named pipe.
+             */
+            if (!DosQueryNPHState((HFILE)fh, &fulMode) && (fulMode & NP_NOWAIT))
+                fLibc |= O_NONBLOCK;
+
 
             /*
              * Allocate a new handle for this filehandle.
@@ -1318 +1324 @@
             rc = DosSetFHState(fh, fulNewState);
         }
     }
+    if (!rc && !DosQueryNPHState(fh, &fulState))
+    {
+        ULONG fulNewState;
+        LIBC_ASSERTM(     ((fulState & NP_NOWAIT) != 0 )
+                      ==  ((pFH->fFlags & O_NONBLOCK) != 0),
+                     "Nowait flags are out of sync for file hFile %d (%#x)! fulState=%08lx fFlags=%08x\n",
+                     fh, fh, fulState, pFH->fFlags);
+        if (fFlags & O_NONBLOCK)
+            fulNewState = fulState | NP_NOWAIT;
+        else
+            fulNewState = fulState & ~NP_NOWAIT;
+        if (fulNewState != fulState)
+        {
+            fulNewState &= NP_NOWAIT | NP_READMODE_MESSAGE; /* Turn off non-participating bits. */
+            rc = DosSetNPHState(fh, fulNewState);
+        }
+    }
     FS_RESTORE();
 
     if (!rc)