grub2/0173-Don-t-assume-that-boot-commands-will-only-return-on-.patch
Petr Šabata 100e37f2e6 RHEL 9.0.0 Alpha bootstrap
The content of this branch was automatically imported from Fedora ELN
with the following as its source:
https://src.fedoraproject.org/rpms/grub2#f7e054f3d693af43a903faf33b70673f7aca4508
2020-10-15 09:48:35 +02:00

80 lines
2.9 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Javier Martinez Canillas <javierm@redhat.com>
Date: Tue, 9 Apr 2019 13:12:40 +0200
Subject: [PATCH] Don't assume that boot commands will only return on fail
While it's true that for most loaders the boot command never returns, it
may be the case that it does. For example the GRUB emulator boot command
calls to systemctl kexec which in turn does an asynchonous call to kexec.
So in this case GRUB will wrongly assume that the boot command fails and
print a "Failed to boot both default and fallback entries" even when the
kexec call later succeeds.
Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
---
grub-core/normal/menu.c | 19 +++++++++++--------
1 file changed, 11 insertions(+), 8 deletions(-)
diff --git a/grub-core/normal/menu.c b/grub-core/normal/menu.c
index d4832f17699..9ea1f411814 100644
--- a/grub-core/normal/menu.c
+++ b/grub-core/normal/menu.c
@@ -285,7 +285,7 @@ get_and_remove_first_entry_number (grub_menu_t menu, const char *name)
}
/* Run a menu entry. */
-static void
+static grub_err_t
grub_menu_execute_entry(grub_menu_entry_t entry, int auto_boot)
{
grub_err_t err = GRUB_ERR_NONE;
@@ -385,7 +385,7 @@ grub_menu_execute_entry(grub_menu_entry_t entry, int auto_boot)
if (grub_errno == GRUB_ERR_NONE && grub_loader_is_loaded ())
/* Implicit execution of boot, only if something is loaded. */
- grub_command_execute ("boot", 0, 0);
+ err = grub_command_execute ("boot", 0, 0);
if (errs_before != grub_err_printed_errors)
grub_wait_after_message ();
@@ -408,6 +408,8 @@ grub_menu_execute_entry(grub_menu_entry_t entry, int auto_boot)
else
grub_env_unset ("default");
grub_env_unset ("timeout");
+
+ return err;
}
/* Execute ENTRY from the menu MENU, falling back to entries specified
@@ -422,10 +424,13 @@ grub_menu_execute_with_fallback (grub_menu_t menu,
void *callback_data)
{
int fallback_entry;
+ grub_err_t err;
callback->notify_booting (entry, callback_data);
- grub_menu_execute_entry (entry, 1);
+ err = grub_menu_execute_entry (entry, 1);
+ if (err == GRUB_ERR_NONE)
+ return;
/* Deal with fallback entries. */
while ((fallback_entry = get_and_remove_first_entry_number (menu, "fallback"))
@@ -436,11 +441,9 @@ grub_menu_execute_with_fallback (grub_menu_t menu,
entry = grub_menu_get_entry (menu, fallback_entry);
callback->notify_fallback (entry, callback_data);
- grub_menu_execute_entry (entry, 1);
- /* If the function call to execute the entry returns at all, then this is
- taken to indicate a boot failure. For menu entries that do something
- other than actually boot an operating system, this could assume
- incorrectly that something failed. */
+ err = grub_menu_execute_entry (entry, 1);
+ if (err == GRUB_ERR_NONE)
+ return;
}
if (!autobooted)