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[PATCH] grub-install: Delay copying files to grubdir after install_devic


From: Mate Kukri
Subject: [PATCH] grub-install: Delay copying files to grubdir after install_device was validated.
Date: Tue, 21 Nov 2023 16:20:58 +0000

Previously grub-install copied modules to grubdir before doing any validation on
the install_device.

When grub-install was called with an invalid install_device, modules
were already copied to /boot before it found out and was forced to rely
on atexit rollback.

This patch delays copying the modules after at least some install_device
validation was done, and thus reduces reliance on successful rollback.
---
 util/grub-install.c | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/util/grub-install.c b/util/grub-install.c
index 565505fd2..4000781c9 100644
--- a/util/grub-install.c
+++ b/util/grub-install.c
@@ -1429,13 +1429,6 @@ main (int argc, char *argv[])
        }
     }

-  grub_install_copy_files (grub_install_source_directory,
-                          grubdir, platform);
-
-  char *envfile = grub_util_path_concat (2, grubdir, "grubenv");
-  if (!grub_util_is_regular (envfile))
-    grub_util_create_envblk_file (envfile);
-
   size_t ndev = 0;

   /* Write device to a variable so we don't have to traverse /dev
every time.  */
@@ -1557,6 +1550,13 @@ main (int argc, char *argv[])
        }
     }

+  grub_install_copy_files (grub_install_source_directory,
+                           grubdir, platform);
+
+  char *envfile = grub_util_path_concat (2, grubdir, "grubenv");
+  if (!grub_util_is_regular (envfile))
+    grub_util_create_envblk_file (envfile);
+
   char *efi_signed = NULL;
   switch (platform)
     {
--
2.39.2



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