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| | /* SPDX-License-Identifier: GPL-2.0-or-later
* Copyright Red Hat
* Author: David Gibson <david@gibson.dropbear.id.au>
*
* Definitions used by both passt/pasta and other tools
*/
#ifndef COMMON_H
#define COMMON_H
#include <string.h>
#define VERSION_BLOB \
VERSION "\n" \
"Copyright Red Hat\n" \
"GNU General Public License, version 2 or later\n" \
" <https://www.gnu.org/licenses/old-licenses/gpl-2.0.html>\n" \
"This is free software: you are free to change and redistribute it.\n" \
"There is NO WARRANTY, to the extent permitted by law.\n\n"
/* FPRINTF() intentionally silences cert-err33-c clang-tidy warnings */
#define FPRINTF(f, ...) (void)fprintf(f, __VA_ARGS__)
/*
* Starting from glibc 2.40.9000 and commit 25a5eb4010df ("string: strerror,
* strsignal cannot use buffer after dlmopen (bug 32026)"), strerror() needs
* getrandom(2) and brk(2) as it allocates memory for the locale-translated
* error description, but our seccomp profiles forbid both.
*
* Use the strerror_() wrapper instead, calling into strerrordesc_np() to get
* a static untranslated string. It's a GNU implementation, but also defined by
* bionic.
*
* If strerrordesc_np() is not defined (e.g. musl), call strerror(). C libraries
* not defining strerrordesc_np() are expected to provide strerror()
* implementations that are simple enough for us to call.
*/
__attribute__ ((weak)) const char *strerrordesc_np(int errnum);
/**
* strerror_() - strerror() wrapper calling strerrordesc_np() if available
* @errnum: Error code
*
* Return: error description string
*/
static inline const char *strerror_(int errnum)
{
if (strerrordesc_np)
return strerrordesc_np(errnum);
return strerror(errnum);
}
#define strerror(x) @ "Don't call strerror() directly, use strerror_() instead"
#define ARRAY_SIZE(a) ((int)(sizeof(a) / sizeof((a)[0])))
#endif /* COMMON_H */
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