[uml-devel] [PATCH] uml: Fix stopping uml via mconsole.

[uml-devel] [PATCH] uml: Fix stopping uml via mconsole.

[Karol Swietlicki]

[I forgot to cc the uml-devel list while sending the patch.]

This patch brings back the functionality of stopping user mode linux
with the help of mconsole.

I tested it for six hours and read the code which could be impacted by
this change, so it should work fine, but I am very inexperienced and
new to the kernel and C, so I could have made a mistake somewhere.

I had two ideas, and this one was the less invasive of the two. If
this is not the right way to fix this, I can send in my second idea in
a few days.

Karol Swietlicki

Signed-off-by: Karol Swietlicki <magotari@gmail.com>
---

diff -rupN orig/arch/um/drivers/mconsole_user.c
linux-2.6.24-rc3-mm2/arch/um/drivers/mconsole_user.c
--- orig/arch/um/drivers/mconsole_user.c        2007-11-29
15:11:56.000000000 +0100
+++ linux-2.6.24-rc3-mm2/arch/um/drivers/mconsole_user.c        2007-11-28
21:39:04.000000000 +0100
@@ -83,9 +83,8 @@ int mconsole_get_request(int fd, struct
       int len;

       req->originlen = sizeof(req->origin);
-       req->len = recvfrom(fd, &req->request, sizeof(req->request),
-                           MSG_DONTWAIT, (struct sockaddr *) req->origin,
-                           &req->originlen);
+       req->len = recvfrom(fd, &req->request, sizeof(req->request), 0,
+                           (struct sockaddr *) req->origin, &req->originlen);
       if (req->len < 0)
               return 0;

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