Fedora kernel-2.6.17-1.2142_FC4 patched with stable patch-2.6.17.4-vs2.0.2-rc26.diff

[linux-2.6.git] / net / atm / ioctl.c

diff --git a/net/atm/ioctl.c b/net/atm/ioctl.c
index 4dbb5af..851cfa6 100644 (file)
--- a/net/atm/ioctl.c
+++ b/net/atm/ioctl.c
@@ -12,33 +12,36 @@
 #include <linux/atmdev.h>
 #include <linux/atmclip.h>     /* CLIP_*ENCAP */
 #include <linux/atmarp.h>      /* manifest constants */
+#include <linux/capability.h>
 #include <linux/sonet.h>       /* for ioctls */
 #include <linux/atmsvc.h>
 #include <linux/atmmpc.h>
 #include <net/atmclip.h>
 #include <linux/atmlec.h>
+#include <linux/mutex.h>
 #include <asm/ioctls.h>
 
 #include "resources.h"
 #include "signaling.h"         /* for WAITING and sigd_attach */
+#include "common.h"
 
 
-static DECLARE_MUTEX(ioctl_mutex);
+static DEFINE_MUTEX(ioctl_mutex);
 static LIST_HEAD(ioctl_list);
 
 
 void register_atm_ioctl(struct atm_ioctl *ioctl)
 {
-       down(&ioctl_mutex);
+       mutex_lock(&ioctl_mutex);
        list_add_tail(&ioctl->list, &ioctl_list);
-       up(&ioctl_mutex);
+       mutex_unlock(&ioctl_mutex);
 }
 
 void deregister_atm_ioctl(struct atm_ioctl *ioctl)
 {
-       down(&ioctl_mutex);
+       mutex_lock(&ioctl_mutex);
        list_del(&ioctl->list);
-       up(&ioctl_mutex);
+       mutex_unlock(&ioctl_mutex);
 }
 
 EXPORT_SYMBOL(register_atm_ioctl);
@@ -104,20 +107,38 @@ int vcc_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
                        if (!error)
                                sock->state = SS_CONNECTED;
                        goto done;
-               default:
+               case ATM_SETBACKEND:
+               case ATM_NEWBACKENDIF:
+                       {
+                               atm_backend_t backend;
+                               error = get_user(backend, (atm_backend_t __user *) argp);
+                               if (error)
+                                       goto done;
+                               switch (backend) {
+                                       case ATM_BACKEND_PPP:
+                                               request_module("pppoatm");
+                                               break;
+                                       case ATM_BACKEND_BR2684:
+                                               request_module("br2684");
+                                               break;
+                               }
+                       }
+                       break;
+               case ATMMPC_CTRL:
+               case ATMMPC_DATA:
+                       request_module("mpoa");
+                       break;
+               case ATMARPD_CTRL:
+                       request_module("clip");
+                       break;
+               case ATMLEC_CTRL:
+                       request_module("lec");
                        break;
        }
 
-       if (cmd == ATMMPC_CTRL || cmd == ATMMPC_DATA)
-               request_module("mpoa");
-       if (cmd == ATMARPD_CTRL)
-               request_module("clip");
-       if (cmd == ATMLEC_CTRL)
-               request_module("lec");
-
        error = -ENOIOCTLCMD;
 
-       down(&ioctl_mutex);
+       mutex_lock(&ioctl_mutex);
        list_for_each(pos, &ioctl_list) {
                struct atm_ioctl * ic = list_entry(pos, struct atm_ioctl, list);
                if (try_module_get(ic->owner)) {
@@ -127,7 +148,7 @@ int vcc_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
                                break;
                }
        }
-       up(&ioctl_mutex);
+       mutex_unlock(&ioctl_mutex);
 
        if (error != -ENOIOCTLCMD)
                goto done;