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util/grub-editenv: Wire list_variables() to optional fs_envblk

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This patch updates list_variables() so that it also prints entries from
the external environment block when one is present. The function first
lists all variables from the file based envblk, then iterates over the
external envblk and prints those as well.

The output format remains the same as before. The change makes it
possible to inspect variables regardless of whether they are stored in
the file envblk or in the reserved block.

Signed-off-by: Michael Chang <mchang@suse.com>
Reviewed-by: Neal Gompa <ngompa13@gmail.com>
Reviewed-by: Avnish Chouhan <avnish@linux.ibm.com>
Reviewed-by: Sudhakar Kuppusamy <sudhakar@linux.ibm.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
This commit is contained in:
Michael Chang 2025-10-17 17:01:38 +08:00 committed by Daniel Kiper
parent 84e2bc2f1e
commit 4b5ea8dca6
1 changed files with 7 additions and 0 deletions
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7
util/grub-editenv.c
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@ -355,10 +355,17 @@ static void
list_variables (const char *name)
{
grub_envblk_t envblk;
grub_envblk_t envblk_on_block = NULL;
envblk = open_envblk_file (name);
grub_envblk_iterate (envblk, &envblk_on_block, read_env_block_var);
grub_envblk_iterate (envblk, NULL, print_var);
grub_envblk_close (envblk);
if (envblk_on_block != NULL)
{
grub_envblk_iterate (envblk_on_block, NULL, print_var);
grub_envblk_close (envblk_on_block);
}
}
static void