Use a net fs struct to handle open, reand and close in file.

grub-core/kern/file.c

@@ -25,9 +25,6 @@
 #include <grub/fs.h>
 #include <grub/device.h>
 
-grub_ssize_t (*grub_file_net_read) (grub_file_t file, void *buf, grub_size_t len) = NULL;
-grub_err_t (*grub_file_net_open) (struct grub_file *file, const char *name) = NULL;
-grub_err_t (*grub_file_net_close) (grub_file_t file) = NULL;
 grub_err_t (*grub_file_net_seek) (struct grub_file *file, grub_off_t offset) = NULL;
 
 grub_file_filter_t grub_file_filters_all[GRUB_FILE_FILTER_MAX];
@@ -91,13 +88,6 @@ grub_file_open (const char *name)
 
   file->device = device;
 
-  if (device->net && grub_file_net_open)
-    {
-      if (grub_file_net_open (file, file_name))
-	goto fail;
-      return file;
-    }
-
   if (device->disk && file_name[0] != '/')
     /* This is a block list.  */
     file->fs = &grub_fs_blocklist;
@@ -143,7 +133,7 @@ grub_file_open (const char *name)
 grub_ssize_t
 grub_file_read (grub_file_t file, void *buf, grub_size_t len)
 {
-  grub_ssize_t res = 0;
+  grub_ssize_t res;
 
   if (file->offset > file->size)
     {
@@ -161,12 +151,7 @@ grub_file_read (grub_file_t file, void *buf, grub_size_t len)
 
   if (len == 0)
     return 0;
-  if (file->device->disk)
-    res = (file->fs->read) (file, buf, len);
-  else
-    if (grub_file_net_read && file->device->net)
-      res = grub_file_net_read (file, buf, len);
-  
+  res = (file->fs->read) (file, buf, len);
   if (res > 0)
     file->offset += res;
 
@@ -176,12 +161,6 @@ grub_file_read (grub_file_t file, void *buf, grub_size_t len)
 grub_err_t
 grub_file_close (grub_file_t file)
 {
-  if (file->device->net)
-    {
-      grub_file_net_close (file);
-      return grub_errno;
-    }
- 
   if (file->fs->close)
     (file->fs->close) (file);
 

grub-core/kern/fs.c

@@ -94,8 +94,8 @@ grub_fs_probe (grub_device_t device)
 	  count--;
 	}
     }
-  else if (device->net)
-    return NULL;
+  else if (device->net && device->net->fs)
+    return device->net->fs;
 
   grub_error (GRUB_ERR_UNKNOWN_FS, "unknown filesystem");
   return 0;

grub-core/kern/ieee1275/openfw.c

@@ -23,7 +23,6 @@
 #include <grub/mm.h>
 #include <grub/ieee1275/ieee1275.h>
 #include <grub/ieee1275/ofnet.h>
-#include <grub/net/ieee1275/interface.h>
 #include <grub/net.h>
 #include <grub/net/tftp.h>
 

grub-core/net/net.c

@@ -49,6 +49,7 @@ struct grub_net_network_level_interface *grub_net_network_level_interfaces = NUL
 struct grub_net_card *grub_net_cards = NULL;
 struct grub_net_card_driver *grub_net_card_drivers = NULL;
 struct grub_net_network_level_protocol *grub_net_network_level_protocols = NULL;
+static struct grub_fs grub_net_fs;
 
 static inline void
 grub_net_network_level_interface_unregister (struct grub_net_network_level_interface *inter)
@@ -571,6 +572,7 @@ grub_net_open_real (const char *name)
 	    grub_free (ret);
 	    return NULL;
 	  }
+	ret->fs = &grub_net_fs;
 	return ret;
       }
   }
@@ -580,7 +582,7 @@ grub_net_open_real (const char *name)
 }
 
 static grub_err_t
-grub_net_file_open_real (struct grub_file *file, const char *name)
+grub_net_fs_open (struct grub_file *file, const char *name)
 {
   grub_err_t err;
   grub_net_network_level_address_t addr;
@@ -620,7 +622,7 @@ grub_net_file_open_real (struct grub_file *file, const char *name)
   if (err)
     goto fail;
   file->not_easily_seekable = 1;
-  
+
   return GRUB_ERR_NONE;
 fail:
   grub_net_socket_unregister (socket);
@@ -630,7 +632,7 @@ fail:
 }
 
 static grub_err_t
-grub_net_file_close_real (grub_file_t file)
+grub_net_fs_close (grub_file_t file)
 {
   grub_net_socket_t sock = file->device->net->socket;
   while (sock->packs.first)
@@ -681,11 +683,11 @@ grub_net_poll_cards (unsigned time)
 
 /*  Read from the packets list*/
 static grub_ssize_t
-grub_net_read_real (grub_file_t file, void *buf, grub_size_t len)
+grub_net_fs_read (grub_file_t file, char *buf, grub_size_t len)
 {
   grub_net_socket_t sock = file->device->net->socket;
   struct grub_net_buff *nb;
-  char *ptr = (char *) buf;
+  char *ptr =  buf;
   grub_size_t amount, total = 0;
   int try = 0;
   while (try <= 3)
@@ -744,7 +746,7 @@ grub_net_seek_real (struct grub_file *file, grub_off_t offset)
       return grub_netbuff_push (nb, file->offset - offset);
     }
 
-  grub_net_read_real (file, NULL, len);
+  grub_net_fs_read (file, NULL, len);
   return GRUB_ERR_NONE;
 }
 
@@ -1009,6 +1011,17 @@ grub_cmd_dhcpopt (struct grub_command *cmd __attribute__ ((unused)),
 		     "unrecognised format specification %s", args[3]);
 }
 
+static struct grub_fs grub_net_fs =
+  {
+    .name = "netfs",
+    .dir = NULL,
+    .open = grub_net_fs_open,
+    .read = grub_net_fs_read,
+    .close = grub_net_fs_close,
+    .label = NULL,
+    .uuid = NULL,
+    .mtime = NULL,
+  };
 static grub_command_t cmd_addaddr, cmd_deladdr, cmd_addroute, cmd_delroute;
 static grub_command_t cmd_lsroutes, cmd_lscards, cmd_getdhcp;
 
@@ -1034,10 +1047,8 @@ GRUB_MOD_INIT(net)
 				       N_("VAR INTERFACE NUMBER DESCRIPTION"),
 				       N_("retrieve DHCP option and save it into VAR. If VAR is - then print the value."));
 
+  grub_fs_register (&grub_net_fs);
   grub_net_open = grub_net_open_real;
-  grub_file_net_open = grub_net_file_open_real;
-  grub_file_net_close = grub_net_file_close_real;
-  grub_file_net_read = grub_net_read_real;
   grub_file_net_seek = grub_net_seek_real;
 }
 
@@ -1050,8 +1061,7 @@ GRUB_MOD_FINI(net)
   grub_unregister_command (cmd_lsroutes);
   grub_unregister_command (cmd_lscards);
   grub_unregister_command (cmd_getdhcp);
+  grub_fs_unregister (&grub_net_fs);
   grub_net_open = NULL;
-  grub_file_net_read = NULL;
-  grub_file_net_open = NULL;
-  grub_file_net_close = NULL;
+  grub_file_net_seek = NULL;
 }

include/grub/net.h

@@ -234,11 +234,10 @@ typedef struct grub_net
   char *name;
   grub_net_app_level_t protocol;
   grub_net_socket_t socket;
+  grub_fs_t fs;
 } *grub_net_t;
 
 extern grub_net_t (*EXPORT_VAR (grub_net_open)) (const char *name);
-extern grub_ssize_t (*EXPORT_VAR (grub_file_net_read)) (grub_file_t file, void *buf, grub_size_t len);
-extern grub_err_t (*EXPORT_VAR (grub_file_net_open)) (struct grub_file *file, const char *name);
 extern grub_err_t (*EXPORT_VAR (grub_file_net_seek)) (struct grub_file *file, grub_off_t offset);
 
 struct grub_net_network_level_interface
@@ -434,5 +433,4 @@ grub_net_send_ip_packet (struct grub_net_network_level_interface *inf,
 void
 grub_net_poll_cards (unsigned time);
 
-extern grub_err_t (*EXPORT_VAR (grub_file_net_close)) (grub_file_t file);
 #endif /* ! GRUB_NET_HEADER */