u-boot/test/print_ut.c
Heinrich Schuchardt 3bad256f5b lib/vsprintf: allow printing upper case GUIDs
In the UEFI context GUIDs are expected to be rendered in upper case.

The patch uses the formerly unused bit 1 of the parameter str_format
of function uuid_bin_to_str() to indicate if we need upper or lower case
output.

Function uuid_string() in vsprint.c is adjusted to correctly set the bit
depending on the print format code.

%pUb: 01020304-0506-0708-090a-0b0c0d0e0f10
%pUB: 01020304-0506-0708-090A-0B0C0D0E0F10
%pUl: 04030201-0605-0807-090a-0b0c0d0e0f10
%pUL: 04030201-0605-0807-090A-0B0C0D0E0F10

Up to this point only a diagnostic message in mount_ubifs() using '%pUB' is
concerned by the change. Further patches are needed to adjust the UEFI
subsystem.

A unit test is provided inside the ut_print command.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2019-06-07 10:52:30 -04:00

152 lines
4.1 KiB
C

// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (c) 2012, The Chromium Authors
*/
#define DEBUG
#include <common.h>
#if CONFIG_IS_ENABLED(EFI_LOADER) && !defined(API_BUILD)
#include <efi_api.h>
#endif
#include <display_options.h>
#include <version.h>
#define FAKE_BUILD_TAG "jenkins-u-boot-denx_uboot_dm-master-build-aarch64" \
"and a lot more text to come"
/* Test printing GUIDs */
static void guid_ut_print(void)
{
#if CONFIG_IS_ENABLED(LIB_UUID)
unsigned char guid[16] = {
1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16
};
char str[40];
sprintf(str, "%pUb", guid);
assert(!strcmp("01020304-0506-0708-090a-0b0c0d0e0f10", str));
sprintf(str, "%pUB", guid);
assert(!strcmp("01020304-0506-0708-090A-0B0C0D0E0F10", str));
sprintf(str, "%pUl", guid);
assert(!strcmp("04030201-0605-0807-090a-0b0c0d0e0f10", str));
sprintf(str, "%pUL", guid);
assert(!strcmp("04030201-0605-0807-090A-0B0C0D0E0F10", str));
#endif
}
/* Test efi_loader specific printing */
static void efi_ut_print(void)
{
#if CONFIG_IS_ENABLED(EFI_LOADER) && !defined(API_BUILD)
char str[10];
u8 buf[sizeof(struct efi_device_path_sd_mmc_path) +
sizeof(struct efi_device_path)];
u8 *pos = buf;
struct efi_device_path *dp_end;
struct efi_device_path_sd_mmc_path *dp_sd =
(struct efi_device_path_sd_mmc_path *)pos;
/* Create a device path for an SD card */
dp_sd->dp.type = DEVICE_PATH_TYPE_MESSAGING_DEVICE;
dp_sd->dp.sub_type = DEVICE_PATH_SUB_TYPE_MSG_SD;
dp_sd->dp.length = sizeof(struct efi_device_path_sd_mmc_path);
dp_sd->slot_number = 3;
pos += sizeof(struct efi_device_path_sd_mmc_path);
/* Append end node */
dp_end = (struct efi_device_path *)pos;
dp_end->type = DEVICE_PATH_TYPE_END;
dp_end->sub_type = DEVICE_PATH_SUB_TYPE_END;
dp_end->length = sizeof(struct efi_device_path);
snprintf(str, sizeof(str), "_%pD_", buf);
assert(!strcmp("_/SD(3)_", str));
/* NULL device path */
snprintf(str, sizeof(str), "_%pD_", NULL);
assert(!strcmp("_<NULL>_", str));
#endif
}
static int do_ut_print(cmd_tbl_t *cmdtp, int flag, int argc,
char *const argv[])
{
char big_str[400];
int big_str_len;
char str[10], *s;
int len;
printf("%s: Testing print\n", __func__);
snprintf(str, sizeof(str), "testing");
assert(!strcmp("testing", str));
snprintf(str, sizeof(str), "testing but too long");
assert(!strcmp("testing b", str));
snprintf(str, 1, "testing none");
assert(!strcmp("", str));
*str = 'x';
snprintf(str, 0, "testing none");
assert(*str == 'x');
sprintf(big_str, "_%ls_", L"foo");
assert(!strcmp("_foo_", big_str));
/* Test the banner function */
s = display_options_get_banner(true, str, sizeof(str));
assert(s == str);
assert(!strcmp("\n\nU-Boo\n\n", s));
/* Assert that we do not overwrite memory before the buffer */
str[0] = '`';
s = display_options_get_banner(true, str + 1, 1);
assert(s == str + 1);
assert(!strcmp("`", str));
str[0] = '~';
s = display_options_get_banner(true, str + 1, 2);
assert(s == str + 1);
assert(!strcmp("~\n", str));
/* The last two characters are set to \n\n for all buffer sizes > 2 */
s = display_options_get_banner(false, str, sizeof(str));
assert(s == str);
assert(!strcmp("U-Boot \n\n", s));
/* Give it enough space for some of the version */
big_str_len = strlen(version_string) - 5;
s = display_options_get_banner_priv(false, FAKE_BUILD_TAG, big_str,
big_str_len);
assert(s == big_str);
assert(!strncmp(version_string, s, big_str_len - 3));
assert(!strcmp("\n\n", s + big_str_len - 3));
/* Give it enough space for the version and some of the build tag */
big_str_len = strlen(version_string) + 9 + 20;
s = display_options_get_banner_priv(false, FAKE_BUILD_TAG, big_str,
big_str_len);
assert(s == big_str);
len = strlen(version_string);
assert(!strncmp(version_string, s, len));
assert(!strncmp(", Build: ", s + len, 9));
assert(!strncmp(FAKE_BUILD_TAG, s + 9 + len, 12));
assert(!strcmp("\n\n", s + big_str_len - 3));
/* Test efi_loader specific printing */
efi_ut_print();
/* Test printing GUIDs */
guid_ut_print();
printf("%s: Everything went swimmingly\n", __func__);
return 0;
}
U_BOOT_CMD(
ut_print, 1, 1, do_ut_print,
"Very basic test of printf(), etc.",
""
);