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tests: Redirect to real I/O to support coverage run

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Implement a check that redirects mock io functions to the real
implementations. Real I/O functions are needed for the coverage tool to
be able to create and write files.

BUG=None
BRANCH=None
TEST=None

Change-Id: I0817fce6ea0f53a4c127794a0d8246504675f805
Signed-off-by: Evan Benn <evanbenn@chromium.org>
Reviewed-on: https://review.coreboot.org/c/flashrom/+/69539
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Anastasia Klimchuk <aklm@chromium.org>
This commit is contained in:
Evan Benn
2022-11-14 11:33:01 +11:00
committed by Anastasia Klimchuk
parent da6d28f2d1
commit 2c3bbd91e4
4 changed files with 91 additions and 0 deletions
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63
tests/io_real.c Normal file
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/*
* This file is part of the flashrom project.
*
* Copyright 2022 Google LLC
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include "io_mock.h"
#include "wraps.h"
#include "io_real.h"
#include <string.h>
static int io_real_open(void *state, const char *pathname, int flags, mode_t mode)
{
LOG_ME;
return __real_open(pathname, flags, mode);
}
static FILE *io_real_fdopen(void *state, int fd, const char *mode)
{
LOG_ME;
return __real_fdopen(fd, mode);
}
static size_t io_real_fwrite(void *state, const void *ptr, size_t size, size_t nmemb, FILE *fp)
{
return __real_fwrite(ptr, size, nmemb, fp);
}
/* Mock ios that defer to the real io functions.
* These exist so that code coverage can print to real files on disk.
*/
static const struct io_mock real_io = {
.iom_open = io_real_open,
.iom_fwrite = io_real_fwrite,
.iom_fdopen = io_real_fdopen,
};
/* Return 0 if string ends with suffix. */
static int check_suffix(const char *string, const char *suffix)
{
int len_l = strlen(string);
int len_r = strlen(suffix);
if (len_l > len_r)
return strcmp(string + len_l - len_r, suffix);
return 1;
}
void maybe_unmock_io(const char *pathname)
{
const char *gcov_suffix = ".gcda";
if (!check_suffix(pathname, gcov_suffix))
io_mock_register(&real_io);
}