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[PATCH] Devnode: Fix the pseudo-master device port opening flags.

From: Sergiu Ivanov
Subject: [PATCH] Devnode: Fix the pseudo-master device port opening flags.
Date: Thu, 24 Dec 2009 23:42:22 +0200
User-agent: Mutt/1.5.20 (2009-06-14)

* devnode/devnode.c (parse_opt): Open the pseudo-master
devide port with O_READ | O_WRITE flags to allow subsequent
device creation.


Originally, devnode would open the pseudo-master device port with 0
flags.  These flags are stored by eth-multiplexer in the peropen
structure and the subsequent attempt to create a virtual device should
provide flags forming a subset of the flags stored in the peropen.
Obviously, if the pseudo-master device port is opened with 0 flags, no
further meaningful virtual device creation is possible.  This patch
fixes this problem.


 devnode/devnode.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/devnode/devnode.c b/devnode/devnode.c
index 55fd8d9..8819252 100644
--- a/devnode/devnode.c
+++ b/devnode/devnode.c
@@ -275,7 +275,7 @@ parse_opt (int opt, char *arg, struct argp_state *state)
   switch (opt)
     case 'M':
-      master_device = file_name_lookup (arg, 0, 0);
+      master_device = file_name_lookup (arg, O_READ | O_WRITE, 0);
       if (master_device == MACH_PORT_NULL)
        error (1, errno, "file_name_lookup");

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