depot/third_party/nixpkgs/pkgs/tools/misc/grub/add-hidden-menu-entries.patch

diff --git a/grub-core/commands/legacycfg.c b/grub-core/commands/legacycfg.c
index e9e9d94ef..54e08a1b4 100644
--- a/grub-core/commands/legacycfg.c
+++ b/grub-core/commands/legacycfg.c
@@ -143,7 +143,7 @@ legacy_file (const char *filename)
 	    args[0] = oldname;
 	    grub_normal_add_menu_entry (1, args, NULL, NULL, "legacy",
 					NULL, NULL,
-					entrysrc, 0);
+					entrysrc, 0, 0);
 	    grub_free (args);
 	    entrysrc[0] = 0;
 	    grub_free (oldname);
@@ -205,7 +205,7 @@ legacy_file (const char *filename)
 	}
       args[0] = entryname;
       grub_normal_add_menu_entry (1, args, NULL, NULL, NULL,
-				  NULL, NULL, entrysrc, 0);
+				  NULL, NULL, entrysrc, 0, 0);
       grub_free (args);
     }
 
diff --git a/grub-core/commands/menuentry.c b/grub-core/commands/menuentry.c
index 720e6d8ea..50632ccce 100644
--- a/grub-core/commands/menuentry.c
+++ b/grub-core/commands/menuentry.c
@@ -78,7 +78,7 @@ grub_normal_add_menu_entry (int argc, const char **args,
 			    char **classes, const char *id,
 			    const char *users, const char *hotkey,
 			    const char *prefix, const char *sourcecode,
-			    int submenu)
+			    int submenu, int hidden)
 {
   int menu_hotkey = 0;
   char **menu_args = NULL;
@@ -188,8 +188,11 @@ grub_normal_add_menu_entry (int argc, const char **args,
   (*last)->args = menu_args;
   (*last)->sourcecode = menu_sourcecode;
   (*last)->submenu = submenu;
+  (*last)->hidden = hidden;
+
+  if (!hidden)
+    menu->size++;
 
-  menu->size++;
   return GRUB_ERR_NONE;
 
  fail:
@@ -286,7 +289,8 @@ grub_cmd_menuentry (grub_extcmd_context_t ctxt, int argc, char **args)
 				       users,
 				       ctxt->state[2].arg, 0,
 				       ctxt->state[3].arg,
-				       ctxt->extcmd->cmd->name[0] == 's');
+				       ctxt->extcmd->cmd->name[0] == 's',
+               ctxt->extcmd->cmd->name[0] == 'h');
 
   src = args[argc - 1];
   args[argc - 1] = NULL;
@@ -303,7 +307,8 @@ grub_cmd_menuentry (grub_extcmd_context_t ctxt, int argc, char **args)
 				  ctxt->state[0].args, ctxt->state[4].arg,
 				  users,
 				  ctxt->state[2].arg, prefix, src + 1,
-				  ctxt->extcmd->cmd->name[0] == 's');
+				  ctxt->extcmd->cmd->name[0] == 's',
+          ctxt->extcmd->cmd->name[0] == 'h');
 
   src[len - 1] = ch;
   args[argc - 1] = src;
@@ -311,7 +316,7 @@ grub_cmd_menuentry (grub_extcmd_context_t ctxt, int argc, char **args)
   return r;
 }
 
-static grub_extcmd_t cmd, cmd_sub;
+static grub_extcmd_t cmd, cmd_sub, cmd_hidden;
 
 void
 grub_menu_init (void)
@@ -327,6 +332,12 @@ grub_menu_init (void)
 				  | GRUB_COMMAND_FLAG_EXTRACTOR,
 				  N_("BLOCK"), N_("Define a submenu."),
 				  options);
+  cmd_hidden = grub_register_extcmd ("hiddenentry", grub_cmd_menuentry,
+                  GRUB_COMMAND_FLAG_BLOCKS
+                  | GRUB_COMMAND_ACCEPT_DASH
+                  | GRUB_COMMAND_FLAG_EXTRACTOR,
+                  N_("BLOCK"), N_("Define a hidden menu entry."),
+                  options);
 }
 
 void
diff --git a/grub-core/normal/menu.c b/grub-core/normal/menu.c
index 6a90e091f..4236f55bc 100644
--- a/grub-core/normal/menu.c
+++ b/grub-core/normal/menu.c
@@ -37,6 +37,8 @@
    entry failing to boot.  */
 #define DEFAULT_ENTRY_ERROR_DELAY_MS  2500
 
+#define MENU_INCLUDE_HIDDEN 0x10000
+
 grub_err_t (*grub_gfxmenu_try_hook) (int entry, grub_menu_t menu,
 				     int nested) = NULL;
 
@@ -80,8 +82,20 @@ grub_menu_get_entry (grub_menu_t menu, int no)
 {
   grub_menu_entry_t e;
 
-  for (e = menu->entry_list; e && no > 0; e = e->next, no--)
-    ;
+  if (no & MENU_INCLUDE_HIDDEN) {
+    no &= ~MENU_INCLUDE_HIDDEN;
+
+    for (e = menu->entry_list; e && no > 0; e = e->next, no--)
+      ;
+  } else {
+    for (e = menu->entry_list; e && no > 0; e = e->next, no--) {
+      /* Skip hidden entries */
+      while (e && e->hidden)
+        e = e->next;
+    }
+    while (e && e->hidden)
+      e = e->next;
+  }
 
   return e;
 }
@@ -93,10 +107,10 @@ get_entry_index_by_hotkey (grub_menu_t menu, int hotkey)
   grub_menu_entry_t entry;
   int i;
 
-  for (i = 0, entry = menu->entry_list; i < menu->size;
+  for (i = 0, entry = menu->entry_list; entry;
        i++, entry = entry->next)
     if (entry->hotkey == hotkey)
-      return i;
+      return i | MENU_INCLUDE_HIDDEN;
 
   return -1;
 }
@@ -509,6 +523,10 @@ get_entry_number (grub_menu_t menu, const char *name)
       grub_menu_entry_t e = menu->entry_list;
       int i;
 
+       /* Skip hidden entries */
+      while (e && e->hidden)
+        e = e->next;
+
       grub_errno = GRUB_ERR_NONE;
 
       for (i = 0; e; i++)
@@ -520,6 +538,10 @@ get_entry_number (grub_menu_t menu, const char *name)
 	      break;
 	    }
 	  e = e->next;
+
+    /* Skip hidden entries */
+    while (e && e->hidden)
+      e = e->next;
 	}
 
       if (! e)
diff --git a/grub-core/normal/menu_text.c b/grub-core/normal/menu_text.c
index b1321eb26..d2e46cac8 100644
--- a/grub-core/normal/menu_text.c
+++ b/grub-core/normal/menu_text.c
@@ -289,7 +289,11 @@ print_entries (grub_menu_t menu, const struct menu_viewer_data *data)
       print_entry (data->geo.first_entry_y + i, data->offset == i,
 		   e, data);
       if (e)
-	e = e->next;
+	      e = e->next;
+
+      /* Skip hidden entries */
+      while (e && e->hidden)
+        e = e->next;
     }
 
   grub_term_gotoxy (data->term,
diff --git a/include/grub/menu.h b/include/grub/menu.h
index ee2b5e910..eb8a86ba9 100644
--- a/include/grub/menu.h
+++ b/include/grub/menu.h
@@ -58,6 +58,8 @@ struct grub_menu_entry
 
   int submenu;
 
+  int hidden;
+
   /* The next element.  */
   struct grub_menu_entry *next;
 };
diff --git a/include/grub/normal.h b/include/grub/normal.h
index 218cbabcc..bcb412466 100644
--- a/include/grub/normal.h
+++ b/include/grub/normal.h
@@ -145,7 +145,7 @@ grub_normal_add_menu_entry (int argc, const char **args, char **classes,
 			    const char *id,
 			    const char *users, const char *hotkey,
 			    const char *prefix, const char *sourcecode,
-			    int submenu);
+			    int submenu, int hidden);
 
 grub_err_t
 grub_normal_set_password (const char *user, const char *password);