Hook network protocols

diff --git a/grub-core/Makefile.am b/grub-core/Makefile.am
index 5d13d031329a015f2f0fe085a607992670fe389e..1fcc3d00d8e6afb0c5bc2f39da3e03556754f0b0 100644 (file)
--- a/grub-core/Makefile.am
+++ b/grub-core/Makefile.am
@@ -74,6 +74,7 @@ KERNEL_HEADER_FILES += $(top_srcdir)/include/grub/term.h
 KERNEL_HEADER_FILES += $(top_srcdir)/include/grub/time.h
 KERNEL_HEADER_FILES += $(top_srcdir)/include/grub/mm_private.h
 KERNEL_HEADER_FILES += $(top_srcdir)/include/grub/boot.h
+KERNEL_HEADER_FILES += $(top_srcdir)/include/grub/net.h
 
 if COND_i386_pc
 KERNEL_HEADER_FILES += $(top_builddir)/include/grub/machine/memory.h

diff --git a/grub-core/commands/net.c b/grub-core/commands/net.c
index 288ba4c2a2df6506924c9690c3c78dde6ef72f71..904c61a92574d805f1a774ec56fdaefd7ac862ec 100644 (file)
--- a/grub-core/commands/net.c
+++ b/grub-core/commands/net.c
@@ -269,6 +269,37 @@ grub_cmd_addroute (struct grub_command *cmd __attribute__ ((unused)),
   return GRUB_ERR_NONE;
 }
 
+grub_net_app_level_t grub_net_app_level_list;
+
+static grub_net_t
+grub_net_open_real (const char *name)
+{
+  const char *comma = grub_strchr (name, ',');
+  grub_net_app_level_t proto;
+
+  if (!comma)
+    comma = name + grub_strlen (name);
+  FOR_NET_APP_LEVEL (proto)
+  {
+    if (comma - name == (grub_ssize_t) grub_strlen (proto->name)
+       && grub_memcmp (proto->name, name, comma - name) == 0)
+      {
+       grub_net_t ret = grub_malloc (sizeof (*ret));
+       if (!ret)
+         return NULL;
+       ret->protocol = proto;
+       ret->name = grub_strdup (name);
+       if (!ret->name)
+         {
+           grub_free (ret);
+           return NULL;
+         }
+       return ret;
+      }
+  }
+  return NULL;
+}
+
 static grub_command_t cmd_addaddr, cmd_deladdr, cmd_addroute, cmd_delroute;
 
 GRUB_MOD_INIT(net)
@@ -285,6 +316,7 @@ GRUB_MOD_INIT(net)
   cmd_delroute = grub_register_command ("net_del_route", grub_cmd_delroute,
                                        "SHORTNAME",
                                        N_("Delete a network route."));
+  grub_net_open = grub_net_open_real;
 }
 
 GRUB_MOD_FINI(net)
@@ -293,4 +325,5 @@ GRUB_MOD_FINI(net)
   grub_unregister_command (cmd_deladdr);
   grub_unregister_command (cmd_addroute);
   grub_unregister_command (cmd_delroute);
+  grub_net_open = NULL;
 }

diff --git a/grub-core/kern/device.c b/grub-core/kern/device.c
index 4273fedfeb5c2c1f0828c1f72533adddc7066212..9de545910a8ef0d8970d8d3f52a298d179be1fab 100644 (file)
--- a/grub-core/kern/device.c
+++ b/grub-core/kern/device.c
@@ -26,6 +26,8 @@
 #include <grub/env.h>
 #include <grub/partition.h>
 
+grub_net_t (*grub_net_open) (const char *name) = NULL;
+
 grub_device_t
 grub_device_open (const char *name)
 {
@@ -46,15 +48,16 @@ grub_device_open (const char *name)
   if (! dev)
     goto fail;
 
+  dev->net = NULL;
   /* Try to open a disk.  */
-  disk = grub_disk_open (name);
-  if (! disk)
-    goto fail;
-
-  dev->disk = disk;
-  dev->net = 0;        /* FIXME */
+  dev->disk = grub_disk_open (name);
+  if (dev->disk)
+    return dev;
+  if (grub_net_open)
+    dev->net = grub_net_open (name); 
 
-  return dev;
+  if (dev->net)
+    return dev;
 
  fail:
   if (disk)
@@ -71,6 +74,12 @@ grub_device_close (grub_device_t device)
   if (device->disk)
     grub_disk_close (device->disk);
 
+  if (device->net)
+    {
+      grub_free (device->net->name);
+      grub_free (device->net);
+    }
+
   grub_free (device);
 
   return grub_errno;

diff --git a/grub-core/kern/fs.c b/grub-core/kern/fs.c
index 8ffb93c8b0c89dfd398a03d9f078d3b6b4435eb8..c4d6efa96ada9916056c99910414f87207f936e3 100644 (file)
--- a/grub-core/kern/fs.c
+++ b/grub-core/kern/fs.c
@@ -95,7 +95,7 @@ grub_fs_probe (grub_device_t device)
        }
     }
   else if (device->net)
-    return device->net->fs;
+    return device->net->protocol;
 
   grub_error (GRUB_ERR_UNKNOWN_FS, "unknown filesystem");
   return 0;

diff --git a/include/grub/device.h b/include/grub/device.h
index d68c26e66d8485586fc3900727aa52f446d32eee..f3e43bf601d76c0c557c7cab978c03fe63fa5fc1 100644 (file)
--- a/include/grub/device.h
+++ b/include/grub/device.h
@@ -24,12 +24,7 @@
 #include <grub/err.h>
 
 struct grub_disk;
-struct grub_fs;
-struct grub_net
-{
-  char *name;
-  struct grub_fs *fs;
-};
+struct grub_net;
 
 struct grub_device
 {

diff --git a/include/grub/net.h b/include/grub/net.h
index 4ca873f7481f28ac8cde539a3845a4fbf654e367..b5e852f9b6cf7732132736cc0df8e110f7ec1001 100644 (file)
--- a/include/grub/net.h
+++ b/include/grub/net.h
@@ -22,6 +22,17 @@
 #include <grub/types.h>
 #include <grub/err.h>
 #include <grub/list.h>
+#include <grub/fs.h>
+
+typedef struct grub_fs *grub_net_app_level_t;
+
+typedef struct grub_net
+{
+  char *name;
+  grub_net_app_level_t protocol;
+} *grub_net_t;
+
+extern grub_net_t (*EXPORT_VAR (grub_net_open)) (const char *name);
 
 struct grub_net_card;
 
@@ -46,7 +57,7 @@ struct grub_net_network_level_interface;
 typedef union grub_net_network_level_address
 {
   grub_uint32_t ipv4;
-} grub_net_network_level_netaddress_t;
+} grub_net_network_level_address_t;
 
 typedef union grub_net_network_level_netaddress
 {
@@ -54,7 +65,7 @@ typedef union grub_net_network_level_netaddress
     grub_uint32_t base;
     int masksize; 
   } ipv4;
-} grub_net_network_level_address_t;
+} grub_net_network_level_netaddress_t;
 
 typedef enum grub_network_level_protocol_id 
 {
@@ -163,6 +174,28 @@ grub_net_network_level_interface_unregister (struct grub_net_network_level_inter
 
 #define FOR_NET_NETWORK_LEVEL_INTERFACES(var) for (var = grub_net_network_level_interfaces; var; var = var->next)
 
+extern grub_net_app_level_t grub_net_app_level_list;
+
+#ifndef GRUB_LST_GENERATOR
+static inline void
+grub_net_app_level_register (grub_net_app_level_t proto)
+{
+  grub_list_push (GRUB_AS_LIST_P (&grub_net_app_level_list),
+                 GRUB_AS_LIST (proto));
+}
+#endif
+
+static inline void
+grub_net_app_level_unregister (grub_net_app_level_t proto)
+{
+  grub_list_remove (GRUB_AS_LIST_P (&grub_net_app_level_list),
+                   GRUB_AS_LIST (proto));
+}
+
+#define FOR_NET_APP_LEVEL(var) FOR_LIST_ELEMENTS((var), \
+                                                (grub_net_app_level_list))
+
+
 extern struct grub_net_route *grub_net_routes;
 
 static inline void