The `efidebug boot order` command should not allow to create a boot order containing non-existent boot options.
Signed-off-by: Heinrich Schuchardt <[email protected]> --- cmd/efidebug.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/cmd/efidebug.c b/cmd/efidebug.c index a6faa36b500..e2739b1df04 100644 --- a/cmd/efidebug.c +++ b/cmd/efidebug.c @@ -1423,12 +1423,28 @@ static int do_efi_boot_order(struct cmd_tbl *cmdtp, int flag, return CMD_RET_FAILURE; for (i = 0; i < argc; i++) { + u16 var_name16[9]; + efi_uintn_t size; + efi_status_t ret; + id = (int)hextoul(argv[i], &endp); if (*endp != '\0' || id > 0xffff) { printf("invalid value: %s\n", argv[i]); r = CMD_RET_FAILURE; goto out; } + efi_create_indexed_name(var_name16, sizeof(var_name16), + "Boot", id); + + size = 0; + ret = efi_get_variable_int(var_name16, + &efi_global_variable_guid, NULL, + &size, NULL, NULL); + if (ret != EFI_BUFFER_TOO_SMALL) { + printf("%ls not defined\n", var_name16); + r = CMD_RET_FAILURE; + goto out; + } bootorder[i] = (u16)id; } -- 2.53.0
