Patch from Rich Lane for OpenAFS to work with OpenVZ.
http://bugzilla.openvz.org/show_bug.cgi?id=166

diff -ur openafs.orig/src/afs/LINUX/osi_groups.c openafs/src/afs/LINUX/osi_groups.c
--- openafs.orig/src/afs/LINUX/osi_groups.c	2007-03-17 22:05:55.000000000 -0400
+++ openafs/src/afs/LINUX/osi_groups.c	2007-12-15 11:23:38.000000000 -0500
@@ -618,7 +618,7 @@
 {
     struct task_struct *p;
 
-    p = find_task_by_pid(1);
+    p = find_task_by_pid_all(1);
     if (p && p->user->session_keyring)
 	__key_type_keyring = p->user->session_keyring->type;
 
diff -ur openafs.orig/src/rx/LINUX/rx_knet.c openafs/src/rx/LINUX/rx_knet.c
--- openafs.orig/src/rx/LINUX/rx_knet.c	2006-09-22 07:20:35.000000000 -0400
+++ openafs/src/rx/LINUX/rx_knet.c	2007-12-15 11:23:38.000000000 -0500
@@ -101,6 +101,7 @@
     KERNEL_SPACE_DECL;
     struct msghdr msg;
     int code;
+    struct ve_struct *ve;
 
     msg.msg_iovlen = iovcnt;
     msg.msg_iov = iovec;
@@ -110,9 +111,11 @@
     msg.msg_controllen = 0;
     msg.msg_flags = 0;
 
+    ve = set_exec_env(get_ve0());
     TO_USER_SPACE();
     code = sock_sendmsg(sop, &msg, size);
     TO_KERNEL_SPACE();
+    (void)set_exec_env(ve);
     return (code < 0) ? code : 0;
 }
 
@@ -147,6 +150,7 @@
     int code;
     struct iovec tmpvec[RX_MAXWVECS + 2];
     struct socket *sop = (struct socket *)so;
+    struct ve_struct *ve;
 
     if (iovcnt > RX_MAXWVECS + 2) {
 	osi_Panic("Too many (%d) iovecs passed to osi_NetReceive\n", iovcnt);
@@ -159,9 +163,11 @@
     msg.msg_controllen = 0;
     msg.msg_flags = 0;
 
+    ve = set_exec_env(get_ve0());
     TO_USER_SPACE();
     code = sock_recvmsg(sop, &msg, *lengthp, 0);
     TO_KERNEL_SPACE();
+    (void)set_exec_env(ve);
 
     if (code < 0) {
 #ifdef AFS_LINUX26_ENV
@@ -213,7 +219,7 @@
     else
       rcu_read_lock();
 #endif
-    listener = find_task_by_pid(rxk_ListenerPid);
+    listener = find_task_by_pid_all(rxk_ListenerPid);
     if (&tasklist_lock)
        read_unlock(&tasklist_lock);
 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
diff -ur openafs.orig/src/rx/rx_lwp.c openafs/src/rx/rx_lwp.c
--- openafs.orig/src/rx/rx_lwp.c	2004-12-07 01:10:06.000000000 -0500
+++ openafs/src/rx/rx_lwp.c	2007-12-15 11:23:38.000000000 -0500
@@ -426,7 +426,12 @@
 int
 rxi_Recvmsg(int socket, struct msghdr *msg_p, int flags)
 {
-    return recvmsg((int)socket, msg_p, flags);
+    struct ve_struct *ve;
+    int ret;
+    ve = set_exec_env(get_ve0());
+    ret = recvmsg((int)socket, msg_p, flags);
+    (void)set_exec_env(ve);
+    return ret;
 }
 
 /*
@@ -436,6 +441,8 @@
 int
 rxi_Sendmsg(osi_socket socket, struct msghdr *msg_p, int flags)
 {
+    struct ve_struct *ve;
+    ve = set_exec_env(get_ve0());
     fd_set *sfds = (fd_set *) 0;
     while (sendmsg(socket, msg_p, flags) == -1) {
 	int err;
@@ -445,6 +452,7 @@
 	    if (!(sfds = IOMGR_AllocFDSet())) {
 		(osi_Msg "rx failed to alloc fd_set: ");
 		perror("rx_sendmsg");
+		(void)set_exec_env(ve);
 		return 3;
 	    }
 	    FD_SET(socket, sfds);
@@ -463,14 +471,19 @@
 	{
 	    (osi_Msg "rx failed to send packet: ");
 	    perror("rx_sendmsg");
+	    (void)set_exec_env(ve);
 	    return 3;
 	}
 	while ((err = select(socket + 1, 0, sfds, 0, 0)) != 1) {
 	    if (err >= 0 || errno != EINTR)
+	    {
+	        (void)set_exec_env(ve);
 		osi_Panic("rxi_sendmsg: select error %d.%d", err, errno);
+     }
 	}
     }
     if (sfds)
 	IOMGR_FreeFDSet(sfds);
+    (void)set_exec_env(ve);
     return 0;
 }
diff -ur openafs.orig/src/rx/rx_pthread.c openafs/src/rx/rx_pthread.c
--- openafs.orig/src/rx/rx_pthread.c	2006-07-02 21:16:36.000000000 -0400
+++ openafs/src/rx/rx_pthread.c	2007-12-15 11:23:38.000000000 -0500
@@ -399,8 +399,11 @@
 int
 rxi_Recvmsg(int socket, struct msghdr *msg_p, int flags)
 {
+    struct ve_struct *ve;
     int ret;
+    ve = set_exec_env(get_ve0());
     ret = recvmsg(socket, msg_p, flags);
+    (void)set_exec_env(ve);
     return ret;
 }
 
@@ -410,8 +413,11 @@
 int
 rxi_Sendmsg(osi_socket socket, struct msghdr *msg_p, int flags)
 {
+    struct ve_struct *ve;
     int ret;
+    ve = set_exec_env(get_ve0());
     ret = sendmsg(socket, msg_p, flags);
+    (void)set_exec_env(ve);
 #ifdef AFS_LINUX22_ENV
     /* linux unfortunately returns ECONNREFUSED if the target port
      * is no longer in use */