grub: don't print prefix errors on the screen

still set grub_errno, and behave the same, but don't
print anything. just carry on execution as normal.

Signed-off-by: Leah Rowe <leah@libreboot.org>

1 files changed, 102 insertions, 0 deletions

diff --git a/config/grub/patches/0004-prefix/0001-don-t-print-missing-prefix-errors-on-the-screen.patch b/config/grub/patches/0004-prefix/0001-don-t-print-missing-prefix-errors-on-the-screen.patch
new file mode 100644
index 00000000..25091d16
--- /dev/null
+++ b/config/grub/patches/0004-prefix/0001-don-t-print-missing-prefix-errors-on-the-screen.patch
@@ -0,0 +1,102 @@
+From 9e7a651a0f15f2e9dec65a77765c3c4fd97b4165 Mon Sep 17 00:00:00 2001
+From: Leah Rowe <leah@libreboot.org>
+Date: Sun, 5 Nov 2023 16:14:58 +0000
+Subject: [PATCH 1/1] don't print missing prefix errors on the screen
+
+we do actually set the prefix. this patch modifies
+grub to still set grub_errno and return accordingly,
+so the behaviour is otherwise identical, but it will
+no longer print a warning message on the screen.
+
+Signed-off-by: Leah Rowe <leah@libreboot.org>
+---
+ grub-core/commands/keylayouts.c | 2 +-
+ grub-core/commands/loadenv.c    | 2 +-
+ grub-core/commands/nativedisk.c | 2 +-
+ grub-core/efiemu/main.c         | 3 +--
+ grub-core/font/font.c           | 2 +-
+ grub-core/kern/dl.c             | 2 +-
+ 6 files changed, 6 insertions(+), 7 deletions(-)
+
+diff --git a/grub-core/commands/keylayouts.c b/grub-core/commands/keylayouts.c
+index 445fa0601..00bcf7025 100644
+--- a/grub-core/commands/keylayouts.c
++++ b/grub-core/commands/keylayouts.c
+@@ -211,7 +211,7 @@ grub_cmd_keymap (struct grub_command *cmd __attribute__ ((unused)),
+     {
+       const char *prefix = grub_env_get ("prefix");
+       if (!prefix)
+-	return grub_error (GRUB_ERR_BAD_ARGUMENT, N_("variable `%s' isn't set"), "prefix");
++	return (grub_errno = GRUB_ERR_BAD_ARGUMENT);
+       filename = grub_xasprintf ("%s/layouts/%s.gkb", prefix, argv[0]);
+       if (!filename)
+ 	return grub_errno;
+diff --git a/grub-core/commands/loadenv.c b/grub-core/commands/loadenv.c
+index 166445849..699b39bfa 100644
+--- a/grub-core/commands/loadenv.c
++++ b/grub-core/commands/loadenv.c
+@@ -58,7 +58,7 @@ open_envblk_file (char *filename,
+       prefix = grub_env_get ("prefix");
+       if (! prefix)
+         {
+-          grub_error (GRUB_ERR_FILE_NOT_FOUND, N_("variable `%s' isn't set"), "prefix");
++          grub_errno = GRUB_ERR_FILE_NOT_FOUND;
+           return 0;
+         }
+ 
+diff --git a/grub-core/commands/nativedisk.c b/grub-core/commands/nativedisk.c
+index 580c8d3b0..6806bff9c 100644
+--- a/grub-core/commands/nativedisk.c
++++ b/grub-core/commands/nativedisk.c
+@@ -186,7 +186,7 @@ grub_cmd_nativedisk (grub_command_t cmd __attribute__ ((unused)),
+   prefix = grub_env_get ("prefix");
+ 
+   if (! prefix)
+-    return grub_error (GRUB_ERR_FILE_NOT_FOUND, N_("variable `%s' isn't set"), "prefix");
++    return (grub_errno = GRUB_ERR_FILE_NOT_FOUND);
+ 
+   if (prefix)
+     path_prefix = (prefix[0] == '(') ? grub_strchr (prefix, ')') : NULL;
+diff --git a/grub-core/efiemu/main.c b/grub-core/efiemu/main.c
+index e7037f4ed..e5d4dbff1 100644
+--- a/grub-core/efiemu/main.c
++++ b/grub-core/efiemu/main.c
+@@ -231,8 +231,7 @@ grub_efiemu_autocore (void)
+   prefix = grub_env_get ("prefix");
+ 
+   if (! prefix)
+-    return grub_error (GRUB_ERR_FILE_NOT_FOUND,
+-		       N_("variable `%s' isn't set"), "prefix");
++    return (grub_errno = GRUB_ERR_FILE_NOT_FOUND);
+ 
+   suffix = grub_efiemu_get_default_core_name ();
+ 
+diff --git a/grub-core/font/font.c b/grub-core/font/font.c
+index 18de52562..2a0fea6c8 100644
+--- a/grub-core/font/font.c
++++ b/grub-core/font/font.c
+@@ -461,7 +461,7 @@ grub_font_load (const char *filename)
+ 
+ 	  if (!prefix)
+ 	    {
+-	      grub_error (GRUB_ERR_FILE_NOT_FOUND, N_("variable `%s' isn't set"), "prefix");
++              grub_errno = GRUB_ERR_FILE_NOT_FOUND;
+ 	      goto fail;
+ 	    }
+ 	  file = try_open_from_prefix (prefix, filename);
+diff --git a/grub-core/kern/dl.c b/grub-core/kern/dl.c
+index 4011e2d15..af3bd00d0 100644
+--- a/grub-core/kern/dl.c
++++ b/grub-core/kern/dl.c
+@@ -758,7 +758,7 @@ grub_dl_load (const char *name)
+     return 0;
+ 
+   if (! grub_dl_dir) {
+-    grub_error (GRUB_ERR_FILE_NOT_FOUND, N_("variable `%s' isn't set"), "prefix");
++    grub_errno = GRUB_ERR_FILE_NOT_FOUND;
+     return 0;
+   }
+ 
+-- 
+2.39.2
+