From: Ben Gras <ben@minix3.org>
Date: Tue, 28 Mar 2006 11:28:16 +0000 (+0000)
Subject: Don't open pipes readwrite as it leads to confusion.
X-Git-Tag: v3.1.2a~115
X-Git-Url: http://zhaoyanbai.com/repos/CHANGES?a=commitdiff_plain;h=2d5058685df4ef2245e246f1d6ee124ad540272d;p=minix.git

Don't open pipes readwrite as it leads to confusion.
---

diff --git a/servers/fs/open.c b/servers/fs/open.c
index 31f6eaf30..a4f2cdbc4 100644
--- a/servers/fs/open.c
+++ b/servers/fs/open.c
@@ -287,6 +287,12 @@ PRIVATE int pipe_open(register struct inode *rip, register mode_t bits,
  */
 
   rip->i_pipe = I_PIPE; 
+
+  if((bits & (R_BIT|W_BIT)) == (R_BIT|W_BIT)) {
+	printf("pipe opened RW.\n");
+	return ENXIO;
+  }
+
   if (find_filp(rip, bits & W_BIT ? R_BIT : W_BIT) == NIL_FILP) { 
 	if (oflags & O_NONBLOCK) {
 		if (bits & W_BIT) return(ENXIO);