grub2/0170-Fix-systemctl-kexec-exit-status-check.patch

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2020-07-29 20:47:36 +08:00
From 425daec448d7ad73d0d2dc5e0918af823b4b11b3 Mon Sep 17 00:00:00 2001
From: Javier Martinez Canillas <javierm@redhat.com>
Date: Tue, 9 Apr 2019 12:30:38 +0200
Subject: [PATCH 170/220] Fix systemctl kexec exit status check
There's always an error printed even when the systemctl kexec command does
succeed. That's because systemctl executes it asynchronously, but the emu
loader seems to expect it to be synchronous and that should never return.
Also, it's wrong to test if kexecute == 1 since we already know that's the
case or otherwise the function wouldn't had called grub_fatal() earlier.
Finally, systemctl kexec failing shouldn't be a fatal error since the emu
loader fallbacks to executing the kexec command in case of a failure.
Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
---
grub-core/loader/emu/linux.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/grub-core/loader/emu/linux.c b/grub-core/loader/emu/linux.c
index fda9e00..5b85b22 100644
--- a/grub-core/loader/emu/linux.c
+++ b/grub-core/loader/emu/linux.c
@@ -71,8 +71,10 @@ grub_linux_boot (void)
(kexecute==1) ? "do-or-die" : "just-in-case");
rc = grub_util_exec (systemctl);
- if (kexecute == 1)
- grub_fatal (N_("Error trying to perform 'systemctl kexec'"));
+ if (rc == GRUB_ERR_NONE)
+ return rc;
+
+ grub_error (rc, N_("Error trying to perform 'systemctl kexec'"));
/* need to check read-only root before resetting hard!? */
grub_printf("Performing 'kexec -e'");
--
1.8.3.1