From 39434a9b25dcfc0f6b5aba59e9b6d691468891a4 Mon Sep 17 00:00:00 2001 From: Paul Barker Date: Wed, 5 Oct 2022 13:18:35 +0100 Subject: [PATCH] efi: Add string conversion helper Signed-off-by: Paul Barker Reviewed-by: Heinrich Schuchardt --- include/efi_loader.h | 3 ++- lib/efi_loader/efi_string.c | 24 ++++++++++++++++++++++++ 2 files changed, 26 insertions(+), 1 deletion(-) diff --git a/include/efi_loader.h b/include/efi_loader.h index ad01395..8c45e3e 100644 --- a/include/efi_loader.h +++ b/include/efi_loader.h @@ -1014,9 +1014,10 @@ struct pkcs7_message *efi_parse_pkcs7_header(const void *buf, /* runtime implementation of memcpy() */ void efi_memcpy_runtime(void *dest, const void *src, size_t n); -/* commonly used helper function */ +/* commonly used helper functions */ u16 *efi_create_indexed_name(u16 *buffer, size_t buffer_size, const char *name, unsigned int index); +efi_string_t efi_convert_string(const char *str); extern const struct efi_firmware_management_protocol efi_fmp_fit; extern const struct efi_firmware_management_protocol efi_fmp_raw; diff --git a/lib/efi_loader/efi_string.c b/lib/efi_loader/efi_string.c index 8bf1e49..e21e09c 100644 --- a/lib/efi_loader/efi_string.c +++ b/lib/efi_loader/efi_string.c @@ -8,6 +8,7 @@ #include #include #include +#include /** * efi_create_indexed_name - create a string name with an index @@ -41,3 +42,26 @@ u16 *efi_create_indexed_name(u16 *buffer, size_t buffer_size, const char *name, return p; } + +/** + * efi_convert_string - Convert an ASCII or UTF-8 string to UTF-16 + * @str: String to be converted + * + * Return: Converted string in UTF-16 format. The caller is responsible for + * freeing this string when it is no longer needed. + */ +efi_string_t efi_convert_string(const char *str) +{ + efi_string_t str_16, tmp; + size_t sz_16; + + sz_16 = utf8_utf16_strlen(str); + str_16 = calloc(sz_16 + 1, sizeof(u16)); + if (!str_16) + return NULL; + + tmp = str_16; + utf8_utf16_strcpy(&tmp, str); + + return str_16; +} -- 2.7.4