source: mainline/uspace/lib/posix/source/internal/common.h@ 6afc9d7

/*
 * Copyright (c) 2011 Jiri Zarevucky
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

/** @addtogroup libposix
 * @{
 */
/** @file Helper definitions common for all libposix files.
 */

#ifndef LIBPOSIX_COMMON_H_
#define LIBPOSIX_COMMON_H_

#include <stdio.h>
#include <stdlib.h>

#define not_implemented() do { \
                static int __not_implemented_counter = 0; \
                if (__not_implemented_counter == 0) { \
                        fprintf(stderr, "%s() not implemented in %s:%d, something will NOT work.\n", \
                                __func__, __FILE__, __LINE__); \
                } \
                __not_implemented_counter++; \
        } while (0)

/* Convert negative error return value to positive errno */
#define errnify(func, ...) ({ \
        int rc = func(__VA_ARGS__); \
        if (rc < 0) { \
                errno = -rc; \
                rc = -1; \
        } \
        rc; \
})

/* Convert negative errno to positive errno */
#define negerrno(func, ...) ({ \
        int rc = func(__VA_ARGS__); \
        if (rc < 0) { \
                errno = -errno; \
        } \
        rc; \
})

#endif /* LIBPOSIX_COMMON_H_ */

/** @}
 */