From 7086a71aa8a7312db7c58b3989ccce5caf4aedc7 Mon Sep 17 00:00:00 2001 From: Heinrich Schuchardt Date: Fri, 31 Aug 2018 21:31:33 +0200 Subject: [PATCH] efi_loader: buffer size for load options The number of bytes in an utf-8 string is an upper limit for the number of words in the equivalent utf-16 string. In so far the inumbant coding works correctly. For non-ASCII characters the utf-16 string is shorter. With the patch only the necessary buffer size is allocated for the load options. Signed-off-by: Heinrich Schuchardt Signed-off-by: Alexander Graf --- cmd/bootefi.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/cmd/bootefi.c b/cmd/bootefi.c index e169f5edc0..a0a8a7cdac 100644 --- a/cmd/bootefi.c +++ b/cmd/bootefi.c @@ -116,18 +116,20 @@ static void set_load_options(struct efi_loaded_image *loaded_image_info, { size_t size; const char *env = env_get(env_var); + u16 *pos; loaded_image_info->load_options = NULL; loaded_image_info->load_options_size = 0; if (!env) return; - size = strlen(env) + 1; + size = utf8_utf16_strlen(env) + 1; loaded_image_info->load_options = calloc(size, sizeof(u16)); if (!loaded_image_info->load_options) { printf("ERROR: Out of memory\n"); return; } - utf8_to_utf16(loaded_image_info->load_options, (u8 *)env, size); + pos = loaded_image_info->load_options; + utf8_utf16_strcpy(&pos, env); loaded_image_info->load_options_size = size * 2; } -- 2.25.1