Fix a bug when booting HDM17x64_17.20.0_ADV_Linux_Downloadly.ir.iso

GRUB2/MOD_SRC/grub-2.04/grub-core/script/function.c

+/*
+ *  GRUB  --  GRand Unified Bootloader
+ *  Copyright (C) 2005,2007,2009,2010  Free Software Foundation, Inc.
+ *
+ *  GRUB is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  GRUB is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with GRUB.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <grub/misc.h>
+#include <grub/script_sh.h>
+#include <grub/parser.h>
+#include <grub/mm.h>
+#include <grub/charset.h>
+
+grub_script_function_t grub_script_function_list;
+
+grub_script_function_t
+grub_script_function_create (struct grub_script_arg *functionname_arg,
+			     struct grub_script *cmd)
+{
+  grub_script_function_t func;
+  grub_script_function_t *p;
+
+  func = (grub_script_function_t) grub_malloc (sizeof (*func));
+  if (! func)
+    return 0;
+
+  func->name = grub_strdup (functionname_arg->str);
+  if (! func->name)
+    {
+      grub_free (func);
+      return 0;
+    }
+
+  func->func = cmd;
+
+  /* Keep the list sorted for simplicity.  */
+  p = &grub_script_function_list;
+  while (*p)
+    {
+      if (grub_strcmp ((*p)->name, func->name) >= 0)
+	break;
+
+      p = &((*p)->next);
+    }
+
+  /* If the function already exists, overwrite the old function.  */
+  if (*p && grub_strcmp ((*p)->name, func->name) == 0)
+    {
+      grub_script_function_t q;
+
+      q = *p;
+      grub_script_free (q->func);
+      q->func = cmd;
+      grub_free (func);
+      func = q;
+    }
+  else
+    {
+      func->next = *p;
+      *p = func;
+    }
+
+  return func;
+}
+
+void
+grub_script_function_remove (const char *name)
+{
+  grub_script_function_t *p, q;
+
+  for (p = &grub_script_function_list, q = *p; q; p = &(q->next), q = q->next)
+    if (grub_strcmp (name, q->name) == 0)
+      {
+        *p = q->next;
+	grub_free (q->name);
+	grub_script_free (q->func);
+        grub_free (q);
+        break;
+      }
+}
+
+grub_script_function_t
+grub_script_function_find (char *functionname)
+{
+  grub_script_function_t func;
+
+  for (func = grub_script_function_list; func; func = func->next)
+    if (grub_strcmp (functionname, func->name) == 0)
+      break;
+
+  if (! func)
+    {
+      char tmp[64];
+      grub_strncpy (tmp, functionname, 63);
+      tmp[63] = 0;
+      /* Avoid truncating inside UTF-8 character.  */
+      tmp[grub_getend (tmp, tmp + grub_strlen (tmp))] = 0;
+      grub_error (GRUB_ERR_UNKNOWN_COMMAND, N_("can't find command `%s'"), tmp);
+    }
+
+  return func;
+}

GRUB2/MOD_SRC/grub-2.04/grub-core/ventoy/ventoy_cmd.c

@@ -2701,6 +2701,22 @@ grub_uint32_t ventoy_get_iso_boot_catlog(grub_file_t file)
     return desc.sector;    
 }
 
+static grub_uint32_t ventoy_get_bios_eltorito_rba(grub_file_t file, grub_uint32_t sector)
+{
+    grub_uint8_t buf[512];
+
+    grub_file_seek(file, sector * 2048);
+    grub_file_read(file, buf, sizeof(buf));
+
+    if (buf[0] == 0x01 && buf[1] == 0x00 && 
+        buf[30] == 0x55 && buf[31] == 0xaa && buf[32] == 0x88)
+    {
+        return *((grub_uint32_t *)(buf + 40));
+    }
+
+    return 0;
+}
+
 int ventoy_has_efi_eltorito(grub_file_t file, grub_uint32_t sector)
 {
     int i;
@@ -5007,26 +5023,71 @@ static grub_err_t grub_cmd_gptpriority(grub_extcmd_context_t ctxt, int argc, cha
 }
 
 
-
-/* <BEGIN>: Deleted by longpanda, 20210916 PN:XX LABEL:XX */
-#if 0
-void ventoy_tip_set_menu_label(const char *vid)
+static grub_err_t grub_cmd_syslinux_nojoliet(grub_extcmd_context_t ctxt, int argc, char **args)
 {
-    img_info *node;
+    int ret = 1;
+    int joliet = 0;
+    grub_file_t file = NULL;
+    grub_uint32_t loadrba = 0;
+    grub_uint32_t boot_catlog = 0;
+    grub_uint8_t sector[512];
+    boot_info_table *info = NULL;
+    
+    (void)ctxt;
+    (void)argc;
 
-    g_ventoy_tip_msg1 = g_ventoy_tip_msg2 = NULL;
-    if (vid)
+    /* This also trigger a iso9660 fs parse */
+    if (ventoy_check_file_exist("(loop)/isolinux/isolinux.cfg"))
     {
-        node = (img_info *)(void *)grub_strtoul(vid + 4, NULL, 16);
-        if (node)
-        {
-           g_ventoy_tip_msg1 = node->tip1;
-           g_ventoy_tip_msg2 = node->tip2;
-        }
+        return 0;
     }
+
+    joliet = grub_iso9660_is_joliet();
+    if (joliet == 0)
+    {
+        return 1;
+    }
+
+    file = grub_file_open(args[0], VENTOY_FILE_TYPE);
+    if (!file)
+    {
+        debug("failed to open %s\n", args[0]);
+        return 1;
+    }
+
+    boot_catlog = ventoy_get_iso_boot_catlog(file);
+    if (boot_catlog == 0)
+    {
+        debug("no bootcatlog found %u\n", boot_catlog);
+        goto out;
+    }
+    
+    loadrba = ventoy_get_bios_eltorito_rba(file, boot_catlog);
+    if (loadrba == 0)
+    {
+        debug("no bios eltorito rba found %u\n", loadrba);
+        goto out;
+    }
+
+    grub_file_seek(file, loadrba * 2048);
+    grub_file_read(file, sector, 512);
+
+    info = (boot_info_table *)sector;
+    if (info->bi_data0 == 0x7c6ceafa && 
+        info->bi_data1 == 0x90900000 && 
+        info->bi_PrimaryVolumeDescriptor == 16 && 
+        info->bi_BootFileLocation == loadrba)
+    {
+        debug("bootloader is syslinux, %u.\n", loadrba);
+        ret = 0;
+    }
+
+out:
+
+    grub_file_close(file);
+    grub_errno = GRUB_ERR_NONE;
+    return ret;
 }
-#endif /* #if 0 */
-/* <END>  : Deleted by longpanda, 20210916 PN:XX LABEL:XX */
 
 int ventoy_env_init(void)
 {
@@ -5211,6 +5272,7 @@ static cmd_para ventoy_cmds[] =
     { "vt_check_json_path_case", ventoy_cmd_chk_json_pathcase, 0, NULL, "", "", NULL },
     { "vt_append_extra_sector", ventoy_cmd_append_ext_sector, 0, NULL, "", "", NULL },
     { "gptpriority", grub_cmd_gptpriority, 0, NULL, "", "", NULL },
+    { "vt_syslinux_need_nojoliet", grub_cmd_syslinux_nojoliet, 0, NULL, "", "", NULL },
 };
 
 int ventoy_register_all_cmd(void)

GRUB2/MOD_SRC/grub-2.04/grub-core/ventoy/ventoy_def.h

@@ -199,6 +199,18 @@ typedef struct ventoy_iso9660_vd
     grub_uint32_t space;
 }ventoy_iso9660_vd;
 
+/* https://wiki.osdev.org/El-Torito */
+typedef struct boot_info_table
+{
+    grub_uint32_t bi_data0;
+    grub_uint32_t bi_data1;
+    grub_uint32_t bi_PrimaryVolumeDescriptor;
+    grub_uint32_t bi_BootFileLocation;
+    grub_uint32_t bi_BootFileLength;
+    grub_uint32_t bi_Checksum;
+    grub_uint8_t bi_Reserved[40];
+}boot_info_table;
+
 #pragma pack()
 
 #define img_type_start 0

INSTALL/grub/grub.cfg

@@ -1017,14 +1017,13 @@ function legacy_linux_menu_func {
             loopback loop "$1$2"
         fi
 
-        if [ -f (loop)/isolinux/isolinux.cfg ]; then
-            if vt_iso9660_isjoliet; then
-                vt_iso9660_nojoliet 1
-                loopback -d loop
-                loopback loop "$1$2"
-            fi
+        
+        if vt_syslinux_need_nojoliet "$1$2"; then
+            vt_iso9660_nojoliet 1
+            loopback -d loop
+            loopback loop "$1$2"
         fi
-    
+
         vt_load_cpio  $vtoy_path  "$2" "$1" "busybox=$ventoy_busybox_ver"
 
         vt_linux_clear_initrd