vserver 2.0-rc4

[linux-2.6.git] / kernel / vserver / helper.c

diff --git a/kernel/vserver/helper.c b/kernel/vserver/helper.c
index c547236..e3ab581 100644 (file)
--- a/kernel/vserver/helper.c
+++ b/kernel/vserver/helper.c
@@ -15,6 +15,7 @@
 #include <linux/kmod.h>
 #include <linux/sched.h>
 #include <linux/vs_context.h>
+#include <linux/vs_network.h>
 
 #include <asm/uaccess.h>
 #include <asm/unistd.h>
@@ -23,6 +24,22 @@
 char vshelper_path[255] = "/sbin/vshelper";
 
 
+int do_vshelper(char *name, char *argv[], char *envp[], int sync)
+{
+       int ret;
+
+       if ((ret = call_usermodehelper(name, argv, envp, sync))) {
+               printk( KERN_WARNING
+                       "%s: (%s %s) returned %s with %d\n",
+                       name, argv[1], argv[2],
+                       sync?"sync":"async", ret);
+       }
+       vxdprintk(VXD_CBIT(switch, 1),
+               "%s: (%s %s) returned %s with %d",
+               name, argv[1], argv[2], sync?"sync":"async", ret);
+       return ret;
+}
+
 /*
  *      vshelper path is set via /proc/sys
  *      invoked by vserver sys_reboot(), with
@@ -39,6 +56,7 @@ long vs_reboot(unsigned int cmd, void * arg)
 {
        char id_buf[8], cmd_buf[16];
        char uid_buf[16], pid_buf[16];
+       int ret;
 
        char *argv[] = {vshelper_path, NULL, id_buf, 0};
        char *envp[] = {"HOME=/", "TERM=linux",
@@ -69,48 +87,88 @@ long vs_reboot(unsigned int cmd, void * arg)
                break;
 
        default:
-               argv[1] = "restart2";
-               break;
+               return 0;
        }
 
-       /* maybe we should wait ? */
-       if (call_usermodehelper(*argv, argv, envp, 1)) {
-               printk( KERN_WARNING
-                       "vs_reboot(): failed to exec (%s %s %s)\n",
-                       vshelper_path, argv[1], argv[2]);
-               return -EPERM;
-       }
-       return 0;
+#ifndef CONFIG_VSERVER_LEGACY
+       ret = do_vshelper(vshelper_path, argv, envp, 1);
+#else
+       ret = do_vshelper(vshelper_path, argv, envp, 0);
+#endif
+       return (ret) ? -EPERM : 0;
 }
 
-long vs_context_state(unsigned int cmd)
-{
-       char id_buf[8], cmd_buf[32];
 
-       char *argv[] = {vshelper_path, NULL, id_buf, NULL, 0};
+/*
+ *      argv [0] = vshelper_path;
+ *      argv [1] = action: "startup", "shutdown"
+ *      argv [2] = context identifier
+ *
+ *      envp [*] = type-specific parameters
+ */
+
+long vs_state_change(struct vx_info *vxi, unsigned int cmd)
+{
+       char id_buf[8], cmd_buf[16];
+       char *argv[] = {vshelper_path, NULL, id_buf, 0};
        char *envp[] = {"HOME=/", "TERM=linux",
                        "PATH=/sbin:/usr/sbin:/bin:/usr/bin", cmd_buf, 0};
 
-       snprintf(id_buf, sizeof(id_buf)-1, "%d", vx_current_xid());
+       if (!vx_info_flags(vxi, VXF_STATE_HELPER, 0))
+               return 0;
+
+       snprintf(id_buf, sizeof(id_buf)-1, "%d", vxi->vx_id);
        snprintf(cmd_buf, sizeof(cmd_buf)-1, "VS_CMD=%08x", cmd);
 
        switch (cmd) {
-       case VS_CONTEXT_CREATED:
+       case VSC_STARTUP:
                argv[1] = "startup";
                break;
-       case VS_CONTEXT_DESTROY:
+       case VSC_SHUTDOWN:
                argv[1] = "shutdown";
                break;
        default:
                return 0;
        }
 
-       if (call_usermodehelper(*argv, argv, envp, 1)) {
-               printk( KERN_WARNING
-                       "vs_context_state(): failed to exec (%s %s %s %s)\n",
-                       vshelper_path, argv[1], argv[2], argv[3]);
+       do_vshelper(vshelper_path, argv, envp, 1);
+       return 0;
+}
+
+
+/*
+ *      argv [0] = vshelper_path;
+ *      argv [1] = action: "netup", "netdown"
+ *      argv [2] = context identifier
+ *
+ *      envp [*] = type-specific parameters
+ */
+
+long vs_net_change(struct nx_info *nxi, unsigned int cmd)
+{
+       char id_buf[8], cmd_buf[16];
+       char *argv[] = {vshelper_path, NULL, id_buf, 0};
+       char *envp[] = {"HOME=/", "TERM=linux",
+                       "PATH=/sbin:/usr/sbin:/bin:/usr/bin", cmd_buf, 0};
+
+       if (!nx_info_flags(nxi, NXF_STATE_HELPER, 0))
+               return 0;
+
+       snprintf(id_buf, sizeof(id_buf)-1, "%d", nxi->nx_id);
+       snprintf(cmd_buf, sizeof(cmd_buf)-1, "VS_CMD=%08x", cmd);
+
+       switch (cmd) {
+       case VSC_NETUP:
+               argv[1] = "netup";
+               break;
+       case VSC_NETDOWN:
+               argv[1] = "netdown";
+               break;
+       default:
                return 0;
        }
+
+       do_vshelper(vshelper_path, argv, envp, 1);
        return 0;
 }